Bump version

- We now error if there are too many websockets, instead of queuing
   them up. As these have a more explicit "lifetime", it could be
   confusing if http.websocket just blocks indefinitely.
 - Fix a CCME when cleaning up resources.

.gitignore

@@ -1,12 +1,17 @@
+# Build directories
+/classes
+/logs
 /build
 /out
+
+# Runtime directories
 /run
+/run-*
+/test-files
+
 *.ipr
 *.iws
 *.iml
 .idea
 .gradle
-/luaj-2.0.3/lib
-/luaj-2.0.3/*.jar
 *.DS_Store
-/test-files

build.gradle

@@ -23,7 +23,7 @@ apply plugin: 'org.ajoberstar.grgit'
 apply plugin: 'maven-publish'
 apply plugin: 'maven'
 
-version = "1.80pr1.12"
+version = "1.80pr1.13"
 group = "org.squiddev"
 archivesBaseName = "cc-tweaked"
 

codeStyleSettings.xml

@@ -0,0 +1,61 @@
+<code_scheme name="Project" version="173">
+  <JSON>
+    <option name="OBJECT_WRAPPING" value="1" />
+    <option name="ARRAY_WRAPPING" value="1" />
+  </JSON>
+  <JavaCodeStyleSettings>
+    <option name="PACKAGES_TO_USE_IMPORT_ON_DEMAND">
+      <value />
+    </option>
+    <option name="JD_P_AT_EMPTY_LINES" value="false" />
+    <option name="JD_PRESERVE_LINE_FEEDS" value="true" />
+  </JavaCodeStyleSettings>
+  <codeStyleSettings language="JAVA">
+    <option name="KEEP_FIRST_COLUMN_COMMENT" value="false" />
+    <option name="BRACE_STYLE" value="2" />
+    <option name="CLASS_BRACE_STYLE" value="2" />
+    <option name="METHOD_BRACE_STYLE" value="2" />
+    <option name="LAMBDA_BRACE_STYLE" value="5" />
+    <option name="ELSE_ON_NEW_LINE" value="true" />
+    <option name="CATCH_ON_NEW_LINE" value="true" />
+    <option name="FINALLY_ON_NEW_LINE" value="true" />
+    <option name="SPACE_WITHIN_METHOD_CALL_PARENTHESES" value="true" />
+    <option name="SPACE_WITHIN_METHOD_PARENTHESES" value="true" />
+    <option name="SPACE_WITHIN_IF_PARENTHESES" value="true" />
+    <option name="SPACE_WITHIN_WHILE_PARENTHESES" value="true" />
+    <option name="SPACE_WITHIN_FOR_PARENTHESES" value="true" />
+    <option name="SPACE_WITHIN_TRY_PARENTHESES" value="true" />
+    <option name="SPACE_WITHIN_CATCH_PARENTHESES" value="true" />
+    <option name="SPACE_WITHIN_SWITCH_PARENTHESES" value="true" />
+    <option name="SPACE_WITHIN_SYNCHRONIZED_PARENTHESES" value="true" />
+    <option name="SPACE_WITHIN_ARRAY_INITIALIZER_BRACES" value="true" />
+    <option name="SPACE_BEFORE_IF_PARENTHESES" value="false" />
+    <option name="SPACE_BEFORE_WHILE_PARENTHESES" value="false" />
+    <option name="SPACE_BEFORE_FOR_PARENTHESES" value="false" />
+    <option name="SPACE_BEFORE_TRY_PARENTHESES" value="false" />
+    <option name="SPACE_BEFORE_CATCH_PARENTHESES" value="false" />
+    <option name="SPACE_BEFORE_SWITCH_PARENTHESES" value="false" />
+    <option name="SPACE_BEFORE_SYNCHRONIZED_PARENTHESES" value="false" />
+    <option name="SPACE_BEFORE_ARRAY_INITIALIZER_LBRACE" value="true" />
+    <option name="KEEP_SIMPLE_METHODS_IN_ONE_LINE" value="true" />
+    <option name="KEEP_SIMPLE_LAMBDAS_IN_ONE_LINE" value="true" />
+    <option name="KEEP_SIMPLE_CLASSES_IN_ONE_LINE" value="true" />
+    <option name="IF_BRACE_FORCE" value="1" />
+    <option name="DOWHILE_BRACE_FORCE" value="1" />
+    <option name="WHILE_BRACE_FORCE" value="1" />
+    <option name="FOR_BRACE_FORCE" value="1" />
+    <option name="SPACE_WITHIN_ANNOTATION_PARENTHESES" value="true" />
+    <indentOptions>
+      <option name="CONTINUATION_INDENT_SIZE" value="4" />
+    </indentOptions>
+  </codeStyleSettings>
+  <codeStyleSettings language="JSON">
+    <option name="KEEP_BLANK_LINES_IN_CODE" value="1" />
+    <option name="SPACE_WITHIN_BRACKETS" value="true" />
+    <option name="SPACE_WITHIN_BRACES" value="true" />
+    <indentOptions>
+      <option name="INDENT_SIZE" value="4" />
+      <option name="CONTINUATION_INDENT_SIZE" value="4" />
+    </indentOptions>
+  </codeStyleSettings>
+</code_scheme>

src/main/java/dan200/computercraft/ComputerCraft.java

@@ -1,13 +1,11 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
 package dan200.computercraft;
 
-import com.google.common.base.CaseFormat;
-import com.google.common.base.Converter;
 import dan200.computercraft.api.filesystem.IMount;
 import dan200.computercraft.api.filesystem.IWritableMount;
 import dan200.computercraft.api.lua.ILuaAPIFactory;
@@ -24,12 +22,14 @@ import dan200.computercraft.api.redstone.IBundledRedstoneProvider;
 import dan200.computercraft.api.turtle.ITurtleUpgrade;
 import dan200.computercraft.api.turtle.event.TurtleAction;
 import dan200.computercraft.core.apis.AddressPredicate;
+import dan200.computercraft.core.apis.ApiFactories;
+import dan200.computercraft.core.apis.http.websocket.Websocket;
 import dan200.computercraft.core.filesystem.ComboMount;
 import dan200.computercraft.core.filesystem.FileMount;
 import dan200.computercraft.core.filesystem.FileSystemMount;
 import dan200.computercraft.core.terminal.Terminal;
 import dan200.computercraft.core.tracking.Tracking;
-import dan200.computercraft.shared.common.DefaultBundledRedstoneProvider;
+import dan200.computercraft.shared.*;
 import dan200.computercraft.shared.computer.blocks.BlockCommandComputer;
 import dan200.computercraft.shared.computer.blocks.BlockComputer;
 import dan200.computercraft.shared.computer.blocks.TileComputer;
@@ -41,14 +41,12 @@ import dan200.computercraft.shared.media.items.ItemDiskExpanded;
 import dan200.computercraft.shared.media.items.ItemDiskLegacy;
 import dan200.computercraft.shared.media.items.ItemPrintout;
 import dan200.computercraft.shared.media.items.ItemTreasureDisk;
-import dan200.computercraft.shared.network.ComputerCraftPacket;
-import dan200.computercraft.shared.network.PacketHandler;
-import dan200.computercraft.shared.peripheral.common.BlockCable;
 import dan200.computercraft.shared.peripheral.common.BlockPeripheral;
-import dan200.computercraft.shared.peripheral.common.BlockWiredModemFull;
 import dan200.computercraft.shared.peripheral.diskdrive.TileDiskDrive;
-import dan200.computercraft.shared.peripheral.modem.BlockAdvancedModem;
-import dan200.computercraft.shared.peripheral.modem.WirelessNetwork;
+import dan200.computercraft.shared.peripheral.modem.wired.BlockCable;
+import dan200.computercraft.shared.peripheral.modem.wired.BlockWiredModemFull;
+import dan200.computercraft.shared.peripheral.modem.wireless.BlockAdvancedModem;
+import dan200.computercraft.shared.peripheral.modem.wireless.WirelessNetwork;
 import dan200.computercraft.shared.peripheral.printer.TilePrinter;
 import dan200.computercraft.shared.pocket.items.ItemPocketComputer;
 import dan200.computercraft.shared.pocket.peripherals.PocketModem;
@@ -60,55 +58,43 @@ import dan200.computercraft.shared.turtle.blocks.TileTurtle;
 import dan200.computercraft.shared.turtle.upgrades.*;
 import dan200.computercraft.shared.util.CreativeTabMain;
 import dan200.computercraft.shared.util.IDAssigner;
-import dan200.computercraft.shared.util.InventoryUtil;
-import dan200.computercraft.shared.util.WorldUtil;
+import dan200.computercraft.shared.util.IoUtil;
 import dan200.computercraft.shared.wired.CapabilityWiredElement;
 import dan200.computercraft.shared.wired.WiredNode;
-import io.netty.buffer.Unpooled;
-import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.item.ItemStack;
-import net.minecraft.network.PacketBuffer;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumHand;
-import net.minecraft.util.NonNullList;
-import net.minecraft.util.SoundEvent;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.IBlockAccess;
 import net.minecraft.world.World;
-import net.minecraftforge.common.config.ConfigCategory;
-import net.minecraftforge.common.config.Configuration;
-import net.minecraftforge.common.config.Property;
 import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.SidedProxy;
 import net.minecraftforge.fml.common.event.*;
-import net.minecraftforge.fml.common.network.FMLEventChannel;
 import net.minecraftforge.fml.common.network.NetworkRegistry;
-import net.minecraftforge.fml.common.network.internal.FMLProxyPacket;
+import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
+import net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper;
 import net.minecraftforge.fml.relauncher.Side;
-import org.apache.commons.io.IOUtils;
 import org.apache.logging.log4j.Logger;
 
-import javax.annotation.Nonnull;
 import java.io.*;
 import java.net.MalformedURLException;
 import java.net.URISyntaxException;
 import java.net.URL;
 import java.nio.file.FileSystem;
 import java.nio.file.FileSystems;
-import java.util.*;
-import java.util.function.Function;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.EnumSet;
+import java.util.List;
+import java.util.ServiceConfigurationError;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;
 
-///////////////
-// UNIVERSAL //
-///////////////
-
 @Mod(
     modid = ComputerCraft.MOD_ID, name = "CC: Tweaked", version = "${version}",
     guiFactory = "dan200.computercraft.client.gui.GuiConfigCC$Factory",
@@ -129,8 +115,8 @@ public class ComputerCraft
     public static final int viewComputerGUIID = 110;
 
     // Configuration options
-    private static final String[] DEFAULT_HTTP_WHITELIST = new String[] { "*" };
-    private static final String[] DEFAULT_HTTP_BLACKLIST = new String[] {
+    public static final String[] DEFAULT_HTTP_WHITELIST = new String[] { "*" };
+    public static final String[] DEFAULT_HTTP_BLACKLIST = new String[] {
         "127.0.0.0/8",
         "10.0.0.0/8",
         "172.16.0.0/12",
@@ -138,17 +124,34 @@ public class ComputerCraft
         "fd00::/8",
     };
 
+    public static int computerSpaceLimit = 1000 * 1000;
+    public static int floppySpaceLimit = 125 * 1000;
+    public static int maximumFilesOpen = 128;
+    public static boolean disable_lua51_features = false;
+    public static String default_computer_settings = "";
+    public static boolean debug_enable = true;
+    public static int computer_threads = 1;
+    public static boolean logPeripheralErrors = false;
+
     public static boolean http_enable = true;
     public static boolean http_websocket_enable = true;
     public static AddressPredicate http_whitelist = new AddressPredicate( DEFAULT_HTTP_WHITELIST );
     public static AddressPredicate http_blacklist = new AddressPredicate( DEFAULT_HTTP_BLACKLIST );
-    public static boolean disable_lua51_features = false;
-    public static String default_computer_settings = "";
-    public static boolean debug_enable = false;
-    public static int computer_threads = 1;
-    public static boolean logPeripheralErrors = false;
+
+    public static int httpTimeout = 30000;
+    public static int httpMaxRequests = 16;
+    public static long httpMaxDownload = 16 * 1024 * 1024;
+    public static long httpMaxUpload = 4 * 1024 * 1024;
+    public static int httpMaxWebsockets = 4;
+    public static int httpMaxWebsocketMessage = Websocket.MAX_MESSAGE_SIZE;
 
     public static boolean enableCommandBlock = false;
+    public static int modem_range = 64;
+    public static int modem_highAltitudeRange = 384;
+    public static int modem_rangeDuringStorm = 64;
+    public static int modem_highAltitudeRangeDuringStorm = 384;
+    public static int maxNotesPerTick = 8;
+
     public static boolean turtlesNeedFuel = true;
     public static int turtleFuelLimit = 20000;
     public static int advancedTurtleFuelLimit = 100000;
@@ -165,17 +168,6 @@ public class ComputerCraft
     public static final int terminalWidth_pocketComputer = 26;
     public static final int terminalHeight_pocketComputer = 20;
 
-    public static int modem_range = 64;
-    public static int modem_highAltitudeRange = 384;
-    public static int modem_rangeDuringStorm = 64;
-    public static int modem_highAltitudeRangeDuringStorm = 384;
-
-    public static int computerSpaceLimit = 1000 * 1000;
-    public static int floppySpaceLimit = 125 * 1000;
-    public static int maximumFilesOpen = 128;
-
-    public static int maxNotesPerTick = 8;
-
     // Blocks and Items
     public static class Blocks
     {
@@ -219,45 +211,12 @@ public class ComputerCraft
         public static PocketSpeaker pocketSpeaker;
     }
 
-    public static class Config {
-        public static Configuration config;
-
-        public static Property http_enable;
-        public static Property http_websocket_enable;
-        public static Property http_whitelist;
-        public static Property http_blacklist;
-        public static Property disable_lua51_features;
-        public static Property default_computer_settings;
-        public static Property debug_enable;
-        public static Property computer_threads;
-        public static Property logPeripheralErrors;
-
-        public static Property enableCommandBlock;
-        public static Property turtlesNeedFuel;
-        public static Property turtleFuelLimit;
-        public static Property advancedTurtleFuelLimit;
-        public static Property turtlesObeyBlockProtection;
-        public static Property turtlesCanPush;
-        public static Property turtleDisabledActions;
-
-        public static Property modem_range;
-        public static Property modem_highAltitudeRange;
-        public static Property modem_rangeDuringStorm;
-        public static Property modem_highAltitudeRangeDuringStorm;
-
-        public static Property computerSpaceLimit;
-        public static Property floppySpaceLimit;
-        public static Property maximumFilesOpen;
-        public static Property maxNotesPerTick;
-
-    }
-
     // Registries
     public static ClientComputerRegistry clientComputerRegistry = new ClientComputerRegistry();
     public static ServerComputerRegistry serverComputerRegistry = new ServerComputerRegistry();
 
     // Networking
-    public static FMLEventChannel networkEventChannel;
+    public static SimpleNetworkWrapper networkWrapper;
 
     // Creative
     public static CreativeTabMain mainCreativeTab;
@@ -265,13 +224,8 @@ public class ComputerCraft
     // Logging
     public static Logger log;
 
-    // API users
-    private static List<IPeripheralProvider> peripheralProviders = new ArrayList<>();
-    private static List<IBundledRedstoneProvider> bundledRedstoneProviders = new ArrayList<>();
-    private static List<IMediaProvider> mediaProviders = new ArrayList<>();
-    private static List<ITurtlePermissionProvider> permissionProviders = new ArrayList<>();
-    private static final Map<String, IPocketUpgrade> pocketUpgrades = new HashMap<>();
-    private static final Set<ILuaAPIFactory> apiFactories = new LinkedHashSet<>();
+    // Peripheral providers. This is still here to ensure compatibility with Plethora and Computronics
+    public static List<IPeripheralProvider> peripheralProviders = new ArrayList<>();
 
     // Implementation
     @Mod.Instance( value = ComputerCraft.MOD_ID )
@@ -283,179 +237,21 @@ public class ComputerCraft
     @SidedProxy( clientSide = "dan200.computercraft.client.proxy.CCTurtleProxyClient", serverSide = "dan200.computercraft.server.proxy.CCTurtleProxyServer" )
     public static ICCTurtleProxy turtleProxy;
 
-    public ComputerCraft()
-    {
-    }
-
     @Mod.EventHandler
     public void preInit( FMLPreInitializationEvent event )
     {
         log = event.getModLog();
 
         // Load config
-        Config.config = new Configuration( event.getSuggestedConfigurationFile() );
-        loadConfig();
+        Config.load( event.getSuggestedConfigurationFile() );
 
         // Setup network
-        networkEventChannel = NetworkRegistry.INSTANCE.newEventDrivenChannel( "CC" );
-        networkEventChannel.register( new PacketHandler() );
+        networkWrapper = NetworkRegistry.INSTANCE.newSimpleChannel( ComputerCraft.MOD_ID );
 
         proxy.preInit();
         turtleProxy.preInit();
     }
 
-    public static void loadConfig()
-    {
-        Config.config.load();
-
-        Config.http_enable = Config.config.get( Configuration.CATEGORY_GENERAL, "http_enable", http_enable );
-        Config.http_enable.setComment( "Enable the \"http\" API on Computers (see \"http_whitelist\" and \"http_blacklist\" for more fine grained control than this)" );
-
-        Config.http_websocket_enable = Config.config.get( Configuration.CATEGORY_GENERAL, "http_websocket_enable", http_websocket_enable );
-        Config.http_websocket_enable.setComment( "Enable use of http websockets. This requires the \"http_enable\" option to also be true." );
-
-        {
-            ConfigCategory category = Config.config.getCategory( Configuration.CATEGORY_GENERAL );
-            Property currentProperty = category.get( "http_whitelist" );
-            if( currentProperty != null && !currentProperty.isList() ) category.remove( "http_whitelist" );
-
-            Config.http_whitelist = Config.config.get( Configuration.CATEGORY_GENERAL, "http_whitelist", DEFAULT_HTTP_WHITELIST );
-
-            if( currentProperty != null && !currentProperty.isList() )
-            {
-                Config.http_whitelist.setValues( currentProperty.getString().split( ";" ) );
-            }
-        }
-        Config.http_whitelist.setComment( "A list of wildcards for domains or IP ranges that can be accessed through the \"http\" API on Computers.\n" +
-            "Set this to \"*\" to access to the entire internet. Example: \"*.pastebin.com\" will restrict access to just subdomains of pastebin.com.\n" +
-            "You can use domain names (\"pastebin.com\"), wilcards (\"*.pastebin.com\") or CIDR notation (\"127.0.0.0/8\")." );
-
-        Config.http_blacklist = Config.config.get( Configuration.CATEGORY_GENERAL, "http_blacklist", DEFAULT_HTTP_BLACKLIST );
-        Config.http_blacklist.setComment( "A list of wildcards for domains or IP ranges that cannot be accessed through the \"http\" API on Computers.\n" +
-            "If this is empty then all whitelisted domains will be accessible. Example: \"*.github.com\" will block access to all subdomains of github.com.\n" +
-            "You can use domain names (\"pastebin.com\"), wilcards (\"*.pastebin.com\") or CIDR notation (\"127.0.0.0/8\")." );
-
-        Config.disable_lua51_features = Config.config.get( Configuration.CATEGORY_GENERAL, "disable_lua51_features", disable_lua51_features );
-        Config.disable_lua51_features.setComment( "Set this to true to disable Lua 5.1 functions that will be removed in a future update. Useful for ensuring forward compatibility of your programs now." );
-
-        Config.default_computer_settings = Config.config.get( Configuration.CATEGORY_GENERAL, "default_computer_settings", default_computer_settings );
-        Config.default_computer_settings.setComment( "A comma seperated list of default system settings to set on new computers. Example: \"shell.autocomplete=false,lua.autocomplete=false,edit.autocomplete=false\" will disable all autocompletion" );
-
-        Config.debug_enable = Config.config.get( Configuration.CATEGORY_GENERAL, "debug_enable", debug_enable );
-        Config.debug_enable.setComment( "Enable Lua's debug library. Whilst this should be safe for general use, it may allow players to interact with other computers. Enable at your own risk." );
-
-        Config.computer_threads = Config.config.get( Configuration.CATEGORY_GENERAL, "computer_threads", computer_threads );
-        Config.computer_threads
-            .setMinValue( 1 )
-            .setRequiresWorldRestart( true )
-            .setComment( "Set the number of threads computers can run on. A higher number means more computers can run at once, but may induce lag.\n" +
-                "Please note that some mods may not work with a thread count higher than 1. Use with caution." );
-
-        Config.logPeripheralErrors = Config.config.get( Configuration.CATEGORY_GENERAL, "logPeripheralErrors", logPeripheralErrors );
-        Config.logPeripheralErrors.setComment( "Log exceptions thrown by peripherals and other Lua objects.\n" +
-            "This makes it easier for mod authors to debug problems, but may result in log spam should people use buggy methods." );
-
-        Config.enableCommandBlock = Config.config.get( Configuration.CATEGORY_GENERAL, "enableCommandBlock", enableCommandBlock );
-        Config.enableCommandBlock.setComment( "Enable Command Block peripheral support" );
-
-        Config.modem_range = Config.config.get( Configuration.CATEGORY_GENERAL, "modem_range", modem_range );
-        Config.modem_range.setComment( "The range of Wireless Modems at low altitude in clear weather, in meters" );
-
-        Config.modem_highAltitudeRange = Config.config.get( Configuration.CATEGORY_GENERAL, "modem_highAltitudeRange", modem_highAltitudeRange );
-        Config.modem_highAltitudeRange.setComment( "The range of Wireless Modems at maximum altitude in clear weather, in meters" );
-
-        Config.modem_rangeDuringStorm = Config.config.get( Configuration.CATEGORY_GENERAL, "modem_rangeDuringStorm", modem_rangeDuringStorm );
-        Config.modem_rangeDuringStorm.setComment( "The range of Wireless Modems at low altitude in stormy weather, in meters" );
-
-        Config.modem_highAltitudeRangeDuringStorm = Config.config.get( Configuration.CATEGORY_GENERAL, "modem_highAltitudeRangeDuringStorm", modem_highAltitudeRangeDuringStorm );
-        Config.modem_highAltitudeRangeDuringStorm.setComment( "The range of Wireless Modems at maximum altitude in stormy weather, in meters" );
-
-        Config.computerSpaceLimit = Config.config.get( Configuration.CATEGORY_GENERAL, "computerSpaceLimit", computerSpaceLimit );
-        Config.computerSpaceLimit.setComment( "The disk space limit for computers and turtles, in bytes" );
-
-        Config.floppySpaceLimit = Config.config.get( Configuration.CATEGORY_GENERAL, "floppySpaceLimit", floppySpaceLimit );
-        Config.floppySpaceLimit.setComment( "The disk space limit for floppy disks, in bytes" );
-
-        Config.turtlesNeedFuel = Config.config.get( Configuration.CATEGORY_GENERAL, "turtlesNeedFuel", turtlesNeedFuel );
-        Config.turtlesNeedFuel.setComment( "Set whether Turtles require fuel to move" );
-
-        Config.maximumFilesOpen = Config.config.get(Configuration.CATEGORY_GENERAL, "maximumFilesOpen", maximumFilesOpen);
-        Config.maximumFilesOpen.setComment( "Set how many files a computer can have open at the same time. Set to 0 for unlimited." );
-
-        Config.turtleFuelLimit = Config.config.get( Configuration.CATEGORY_GENERAL, "turtleFuelLimit", turtleFuelLimit );
-        Config.turtleFuelLimit.setComment( "The fuel limit for Turtles" );
-
-        Config.advancedTurtleFuelLimit = Config.config.get( Configuration.CATEGORY_GENERAL, "advancedTurtleFuelLimit", advancedTurtleFuelLimit );
-        Config.advancedTurtleFuelLimit.setComment( "The fuel limit for Advanced Turtles" );
-
-        Config.turtlesObeyBlockProtection = Config.config.get( Configuration.CATEGORY_GENERAL, "turtlesObeyBlockProtection", turtlesObeyBlockProtection );
-        Config.turtlesObeyBlockProtection.setComment( "If set to true, Turtles will be unable to build, dig, or enter protected areas (such as near the server spawn point)" );
-
-        Config.turtlesCanPush = Config.config.get( Configuration.CATEGORY_GENERAL, "turtlesCanPush", turtlesCanPush );
-        Config.turtlesCanPush.setComment( "If set to true, Turtles will push entities out of the way instead of stopping if there is space to do so" );
-
-        Config.turtleDisabledActions = Config.config.get( Configuration.CATEGORY_GENERAL, "turtle_disabled_actions", new String[ 0 ] );
-        Config.turtleDisabledActions.setComment( "A list of turtle actions which are disabled." );
-
-        Config.maxNotesPerTick = Config.config.get( Configuration.CATEGORY_GENERAL, "maxNotesPerTick", maxNotesPerTick );
-        Config.maxNotesPerTick.setComment( "Maximum amount of notes a speaker can play at once" );
-
-        for (Property property : Config.config.getCategory( Configuration.CATEGORY_GENERAL ).getOrderedValues())
-        {
-            property.setLanguageKey( "gui.computercraft:config." + CaseFormat.LOWER_CAMEL.to( CaseFormat.LOWER_UNDERSCORE, property.getName() ) );
-        }
-
-        syncConfig();
-    }
-
-    public static void syncConfig() {
-
-        http_enable = Config.http_enable.getBoolean();
-        http_websocket_enable = Config.http_websocket_enable.getBoolean();
-        http_whitelist = new AddressPredicate( Config.http_whitelist.getStringList() );
-        http_blacklist = new AddressPredicate( Config.http_blacklist.getStringList() );
-        disable_lua51_features = Config.disable_lua51_features.getBoolean();
-        default_computer_settings = Config.default_computer_settings.getString();
-        debug_enable = Config.debug_enable.getBoolean();
-        computer_threads = Config.computer_threads.getInt();
-        logPeripheralErrors = Config.logPeripheralErrors.getBoolean();
-
-        enableCommandBlock = Config.enableCommandBlock.getBoolean();
-
-        modem_range = Math.min( Config.modem_range.getInt(), 100000 );
-        modem_highAltitudeRange = Math.min( Config.modem_highAltitudeRange.getInt(), 100000 );
-        modem_rangeDuringStorm = Math.min( Config.modem_rangeDuringStorm.getInt(), 100000 );
-        modem_highAltitudeRangeDuringStorm = Math.min( Config.modem_highAltitudeRangeDuringStorm.getInt(), 100000 );
-
-        computerSpaceLimit = Config.computerSpaceLimit.getInt();
-        floppySpaceLimit = Config.floppySpaceLimit.getInt();
-        maximumFilesOpen = Math.max( 0, Config.maximumFilesOpen.getInt() );
-
-        turtlesNeedFuel = Config.turtlesNeedFuel.getBoolean();
-        turtleFuelLimit = Config.turtleFuelLimit.getInt();
-        advancedTurtleFuelLimit = Config.advancedTurtleFuelLimit.getInt();
-        turtlesObeyBlockProtection = Config.turtlesObeyBlockProtection.getBoolean();
-        turtlesCanPush = Config.turtlesCanPush.getBoolean();
-
-        turtleDisabledActions.clear();
-        Converter<String, String> converter = CaseFormat.LOWER_CAMEL.converterTo( CaseFormat.UPPER_UNDERSCORE );
-        for( String value : Config.turtleDisabledActions.getStringList() )
-        {
-            try
-            {
-                turtleDisabledActions.add( TurtleAction.valueOf( converter.convert( value ) ) );
-            }
-            catch( IllegalArgumentException e )
-            {
-                ComputerCraft.log.error( "Unknown turtle action " + value );
-            }
-        }
-
-        maxNotesPerTick = Math.max(1, Config.maxNotesPerTick.getInt());
-
-        Config.config.save();
-    }
-
     @Mod.EventHandler
     public void init( FMLInitializationEvent event )
     {
@@ -496,36 +292,6 @@ public class ComputerCraft
         return "${version}";
     }
 
-    public static boolean isClient()
-    {
-        return proxy.isClient();
-    }
-
-    public static boolean getGlobalCursorBlink()
-    {
-        return proxy.getGlobalCursorBlink();
-    }
-
-    public static long getRenderFrame()
-    {
-        return proxy.getRenderFrame();
-    }
-
-    public static Object getFixedWidthFontRenderer()
-    {
-        return proxy.getFixedWidthFontRenderer();
-    }
-
-    public static void playRecord( SoundEvent record, String recordInfo, World world, BlockPos pos )
-    {
-        proxy.playRecord( record, recordInfo, world, pos );
-    }
-
-    public static String getRecordInfo( @Nonnull ItemStack recordStack )
-    {
-        return proxy.getRecordInfo( recordStack );
-    }
-
     public static void openDiskDriveGUI( EntityPlayer player, TileDiskDrive drive )
     {
         BlockPos pos = drive.getPos();
@@ -578,12 +344,12 @@ public class ComputerCraft
         );
     }
 
-    public static File getBaseDir()
+    private static File getBaseDir()
     {
-        return FMLCommonHandler.instance().getMinecraftServerInstance().getFile(".");
+        return FMLCommonHandler.instance().getMinecraftServerInstance().getDataDirectory();
     }
 
-    public static File getResourcePackDir()
+    private static File getResourcePackDir()
     {
         return new File( getBaseDir(), "resourcepacks" );
     }
@@ -593,36 +359,24 @@ public class ComputerCraft
         return proxy.getWorldDir( world );
     }
 
-    private static FMLProxyPacket encode( ComputerCraftPacket packet )
+    public static void sendToPlayer( EntityPlayer player, IMessage packet )
     {
-        PacketBuffer buffer = new PacketBuffer( Unpooled.buffer() );
-        packet.toBytes( buffer );
-        return new FMLProxyPacket( buffer, "CC" );
+        networkWrapper.sendTo( packet, (EntityPlayerMP) player );
     }
 
-    public static void sendToPlayer( EntityPlayer player, ComputerCraftPacket packet )
+    public static void sendToAllPlayers( IMessage packet )
     {
-        networkEventChannel.sendTo( encode( packet ), (EntityPlayerMP)player );
+        networkWrapper.sendToAll( packet );
     }
 
-    public static void sendToAllPlayers( ComputerCraftPacket packet )
+    public static void sendToServer( IMessage packet )
     {
-        networkEventChannel.sendToAll( encode( packet ) );
+        networkWrapper.sendToServer( packet );
     }
 
-    public static void sendToServer( ComputerCraftPacket packet )
+    public static void sendToAllAround( IMessage packet, NetworkRegistry.TargetPoint point )
     {
-        networkEventChannel.sendToServer( encode( packet ) );
-    }
-
-    public static void sendToAllAround( ComputerCraftPacket packet, NetworkRegistry.TargetPoint point )
-    {
-        networkEventChannel.sendToAllAround( encode( packet ), point );
-    }
-
-    public static void handlePacket( ComputerCraftPacket packet, EntityPlayer player )
-    {
-        proxy.handlePacket( packet, player );
+        networkWrapper.sendToAllAround( packet, point );
     }
 
     public static boolean canPlayerUseCommands( EntityPlayer player )
@@ -635,136 +389,49 @@ public class ComputerCraft
         return false;
     }
 
-    public static boolean isPlayerOpped( EntityPlayer player )
-    {
-        MinecraftServer server = player.getServer();
-        if( server != null )
-        {
-            return server.getPlayerList().getOppedPlayers().getEntry( player.getGameProfile() ) != null;
-        }
-        return false;
-    }
-
+    @Deprecated
     public static void registerPermissionProvider( ITurtlePermissionProvider provider )
     {
-        if( provider != null && !permissionProviders.contains( provider ) )
-        {
-            permissionProviders.add( provider );
-        }
-    }
-
-    public static boolean isBlockEnterable( World world, BlockPos pos, EntityPlayer player )
-    {
-        MinecraftServer server = player.getServer();
-        if( server != null && !world.isRemote )
-        {
-            if( server.isBlockProtected( world, pos, player ) )
-            {
-                return false;
-            }
-        }
-
-        for( ITurtlePermissionProvider provider : permissionProviders )
-        {
-            if( !provider.isBlockEnterable( world, pos ) )
-            {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    public static boolean isBlockEditable( World world, BlockPos pos, EntityPlayer player )
-    {
-        MinecraftServer server = player.getServer();
-        if( server != null && !world.isRemote )
-        {
-            if( server.isBlockProtected( world, pos, player ) )
-            {
-                return false;
-            }
-        }
-
-        for( ITurtlePermissionProvider provider : permissionProviders )
-        {
-            if( !provider.isBlockEditable( world, pos ) )
-            {
-                return false;
-            }
-        }
-        return true;
+        TurtlePermissions.register( provider );
     }
 
+    @Deprecated
     public static void registerPocketUpgrade( IPocketUpgrade upgrade )
     {
-        String id = upgrade.getUpgradeID().toString();
-        IPocketUpgrade existing = pocketUpgrades.get( id );
-        if( existing != null )
-        {
-            throw new RuntimeException( "Error registering '" + upgrade.getUnlocalisedAdjective() + " pocket computer'. UpgradeID '" + id + "' is already registered by '" + existing.getUnlocalisedAdjective() + " pocket computer'" );
-        }
-
-        pocketUpgrades.put( id, upgrade );
+        dan200.computercraft.shared.PocketUpgrades.register( upgrade );
     }
 
+    @Deprecated
     public static void registerPeripheralProvider( IPeripheralProvider provider )
     {
-        if( provider != null && !peripheralProviders.contains( provider ) )
-        {
-            peripheralProviders.add( provider );
-        }
+        Peripherals.register( provider );
     }
 
+    @Deprecated
     public static void registerBundledRedstoneProvider( IBundledRedstoneProvider provider )
     {
-        if( provider != null && !bundledRedstoneProviders.contains( provider ) )
-        {
-            bundledRedstoneProviders.add( provider );
-        }
+        BundledRedstone.register( provider );
     }
 
+    @Deprecated
     public static void registerMediaProvider( IMediaProvider provider )
     {
-        if( provider != null && !mediaProviders.contains( provider ) )
-        {
-            mediaProviders.add( provider );
-        }
+        MediaProviders.register( provider );
     }
 
-    public static void registerAPIFactory( ILuaAPIFactory provider )
+    @Deprecated
+    public static void registerAPIFactory( ILuaAPIFactory factory )
     {
-        if( provider != null )
-        {
-            apiFactories.add( provider );
-        }
+        ApiFactories.register( factory );
     }
 
+    @Deprecated
     public static IWiredNode createWiredNodeForElement( IWiredElement element )
     {
         return new WiredNode( element );
     }
 
-    public static IPeripheral getPeripheralAt( World world, BlockPos pos, EnumFacing side )
-    {
-        // Try the handlers in order:
-        for( IPeripheralProvider peripheralProvider : peripheralProviders )
-        {
-            try
-            {
-                IPeripheral peripheral = peripheralProvider.getPeripheral( world, pos, side );
-                if( peripheral != null )
-                {
-                    return peripheral;
-                }
-            }
-            catch( Exception e )
-            {
-                ComputerCraft.log.error( "Peripheral provider " + peripheralProvider + " errored.", e );
-            }
-        }
-        return null;
-    }
-
+    @Deprecated
     public static IWiredElement getWiredElementAt( IBlockAccess world, BlockPos pos, EnumFacing side )
     {
         TileEntity tile = world.getTileEntity( pos );
@@ -773,122 +440,25 @@ public class ComputerCraft
             : null;
     }
 
+    @Deprecated
     public static int getDefaultBundledRedstoneOutput( World world, BlockPos pos, EnumFacing side )
     {
-        if( WorldUtil.isBlockInWorld( world, pos ) )
-        {
-            return DefaultBundledRedstoneProvider.getDefaultBundledRedstoneOutput( world, pos, side );
-        }
-        return -1;
-    }
-
-    public static int getBundledRedstoneOutput( World world, BlockPos pos, EnumFacing side )
-    {
-        int y = pos.getY();
-        if( y < 0 || y >= world.getHeight() )
-        {
-            return -1;
-        }
-
-        // Try the handlers in order:
-        int combinedSignal = -1;
-        for( IBundledRedstoneProvider bundledRedstoneProvider : bundledRedstoneProviders )
-        {
-            try
-            {
-                int signal = bundledRedstoneProvider.getBundledRedstoneOutput( world, pos, side );
-                if( signal >= 0 )
-                {
-                    if( combinedSignal < 0 )
-                    {
-                        combinedSignal = (signal & 0xffff);
-                    }
-                    else
-                    {
-                        combinedSignal = combinedSignal | (signal & 0xffff);
-                    }
-                }
-            }
-            catch( Exception e )
-            {
-                ComputerCraft.log.error( "Bundled redstone provider " + bundledRedstoneProvider + " errored.", e );
-            }
-        }
-        return combinedSignal;
-    }
-
-    public static IMedia getMedia( @Nonnull ItemStack stack )
-    {
-        if( !stack.isEmpty() )
-        {
-            // Try the handlers in order:
-            for( IMediaProvider mediaProvider : mediaProviders )
-            {
-                try
-                {
-                    IMedia media = mediaProvider.getMedia( stack );
-                    if( media != null )
-                    {
-                        return media;
-                    }
-                }
-                catch( Exception e )
-                {
-                    // mod misbehaved, ignore it
-                    ComputerCraft.log.error( "Media provider " + mediaProvider + " errored.", e );
-                }
-            }
-            return null;
-        }
-        return null;
-    }
-
-    public static IPocketUpgrade getPocketUpgrade(String id) {
-        return pocketUpgrades.get( id );
-    }
-
-    public static IPocketUpgrade getPocketUpgrade( @Nonnull ItemStack stack )
-    {
-        if( stack.isEmpty() ) return null;
-
-        for (IPocketUpgrade upgrade : pocketUpgrades.values())
-        {
-            ItemStack craftingStack = upgrade.getCraftingItem();
-            if( !craftingStack.isEmpty() && InventoryUtil.areItemsStackable( stack, craftingStack ) )
-            {
-                return upgrade;
-            }
-        }
-
-        return null;
-    }
-
-    public static Iterable<IPocketUpgrade> getVanillaPocketUpgrades() {
-        List<IPocketUpgrade> upgrades = new ArrayList<>();
-        for(IPocketUpgrade upgrade : pocketUpgrades.values()) {
-            if(upgrade instanceof PocketModem || upgrade instanceof PocketSpeaker) {
-                upgrades.add( upgrade );
-            }
-        }
-
-        return upgrades;
+        return BundledRedstone.getDefaultOutput( world, pos, side );
     }
 
+    @Deprecated
     public static IPacketNetwork getWirelessNetwork()
     {
         return WirelessNetwork.getUniversal();
     }
 
-    public static Iterable<ILuaAPIFactory> getAPIFactories()
-    {
-        return apiFactories;
-    }
-
+    @Deprecated
     public static int createUniqueNumberedSaveDir( World world, String parentSubPath )
     {
-        return IDAssigner.getNextIDFromDirectory(new File(getWorldDir(world), parentSubPath));
+        return IDAssigner.getNextIDFromDirectory( new File( getWorldDir( world ), parentSubPath ) );
     }
 
+    @Deprecated
     public static IWritableMount createSaveDirMount( World world, String subPath, long capacity )
     {
         try
@@ -901,6 +471,7 @@ public class ComputerCraft
         }
     }
 
+    @Deprecated
     public static IMount createResourceMount( Class<?> modClass, String domain, String subPath )
     {
         // Start building list of mounts
@@ -949,7 +520,7 @@ public class ComputerCraft
                     {
                         // Mount a resource pack from a jar
                         FileSystem fs = FileSystems.newFileSystem( resourcePack.toPath(), ComputerCraft.class.getClassLoader() );
-                        mounts.add( new FileSystemMount( fs, subPath ) );
+                        if( Files.exists( fs.getPath( subPath ) ) ) mounts.add( new FileSystemMount( fs, subPath ) );
                     }
                     else
                     {
@@ -972,7 +543,7 @@ public class ComputerCraft
         // Return the combination of all the mounts found
         if( mounts.size() >= 2 )
         {
-            IMount[] mountArray = new IMount[ mounts.size() ];
+            IMount[] mountArray = new IMount[mounts.size()];
             mounts.toArray( mountArray );
             return new ComboMount( mountArray );
         }
@@ -1036,12 +607,12 @@ public class ComputerCraft
                         }
                         else
                         {
-                            IOUtils.closeQuietly( zipFile );
+                            IoUtil.closeQuietly( zipFile );
                         }
                     }
                     catch( IOException e )
                     {
-                        if( zipFile != null ) IOUtils.closeQuietly( zipFile );
+                        if( zipFile != null ) IoUtil.closeQuietly( zipFile );
                     }
                 }
             }
@@ -1078,16 +649,22 @@ public class ComputerCraft
         }
 
         URL url;
-        try {
+        try
+        {
             url = new URL( path );
-        } catch (MalformedURLException e1) {
+        }
+        catch( MalformedURLException e1 )
+        {
             return null;
         }
 
         File file;
-        try {
+        try
+        {
             file = new File( url.toURI() );
-        } catch(URISyntaxException e) {
+        }
+        catch( URISyntaxException e )
+        {
             file = new File( url.getPath() );
         }
         return file;
@@ -1096,51 +673,51 @@ public class ComputerCraft
     private static File getDebugCodeDir( Class<?> modClass )
     {
         String path = modClass.getProtectionDomain().getCodeSource().getLocation().getPath();
-        int bangIndex = path.indexOf("!");
-        if( bangIndex >= 0 )
-        {
-            return null;
-        }
-        return new File( new File( path ).getParentFile(), "../.." );
+        int bangIndex = path.indexOf( "!" );
+        return bangIndex >= 0 ? null : new File( new File( path ).getParentFile(), "../.." );
     }
 
+    @Deprecated
     public static void registerTurtleUpgrade( ITurtleUpgrade upgrade )
     {
-        turtleProxy.registerTurtleUpgrade( upgrade );
+        TurtleUpgrades.register( upgrade );
     }
 
+    //region Compatibility
+    @Deprecated
+    public static IMedia getMedia( ItemStack stack )
+    {
+        return MediaProviders.get( stack );
+    }
+
+    @Deprecated
+    public static IPocketUpgrade getPocketUpgrade( ItemStack stack )
+    {
+        return dan200.computercraft.shared.PocketUpgrades.get( stack );
+    }
+
+    @Deprecated
+    public static ITurtleUpgrade getTurtleUpgrade( ItemStack stack )
+    {
+        return TurtleUpgrades.get( stack );
+    }
+
+    @Deprecated
+    public static IPocketUpgrade getPocketUpgrade( String id )
+    {
+        return dan200.computercraft.shared.PocketUpgrades.get( id );
+    }
+
+    @Deprecated
     public static ITurtleUpgrade getTurtleUpgrade( String id )
     {
-        return turtleProxy.getTurtleUpgrade( id );
+        return TurtleUpgrades.get( id );
     }
 
-    public static ITurtleUpgrade getTurtleUpgrade( int legacyID )
+    @Deprecated
+    public static IPeripheral getPeripheralAt( World world, BlockPos pos, EnumFacing side )
     {
-        return turtleProxy.getTurtleUpgrade( legacyID );
-    }
-
-    public static ITurtleUpgrade getTurtleUpgrade( @Nonnull ItemStack item )
-    {
-        return turtleProxy.getTurtleUpgrade( item );
-    }
-
-    public static void addAllUpgradedTurtles( NonNullList<ItemStack> list )
-    {
-        turtleProxy.addAllUpgradedTurtles( list );
-    }
-
-    public static void setDropConsumer( Entity entity, Function<ItemStack, ItemStack> consumer )
-    {
-        turtleProxy.setDropConsumer( entity, consumer );
-    }
-
-    public static void setDropConsumer( World world, BlockPos pos, Function<ItemStack, ItemStack> consumer )
-    {
-        turtleProxy.setDropConsumer( world, pos, consumer );
-    }
-
-    public static List<ItemStack> clearDropConsumer( )
-    {
-        return turtleProxy.clearDropConsumer();
+        return Peripherals.getPeripheral( world, pos, side );
     }
+    //endregion
 }

src/main/java/dan200/computercraft/api/ComputerCraftAPI.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 
@@ -49,9 +49,12 @@ public final class ComputerCraftAPI
         findCC();
         if( computerCraft_getVersion != null )
         {
-            try {
-                return (String)computerCraft_getVersion.invoke( null );
-            } catch (Exception e) {
+            try
+            {
+                return (String) computerCraft_getVersion.invoke( null );
+            }
+            catch( Exception e )
+            {
                 // It failed
             }
         }
@@ -82,9 +85,12 @@ public final class ComputerCraftAPI
         findCC();
         if( computerCraft_createUniqueNumberedSaveDir != null )
         {
-            try {
-                return (Integer)computerCraft_createUniqueNumberedSaveDir.invoke( null, world, parentSubPath );
-            } catch (Exception e) {
+            try
+            {
+                return (Integer) computerCraft_createUniqueNumberedSaveDir.invoke( null, world, parentSubPath );
+            }
+            catch( Exception e )
+            {
                 // It failed
             }
         }
@@ -115,9 +121,12 @@ public final class ComputerCraftAPI
         findCC();
         if( computerCraft_createSaveDirMount != null )
         {
-            try {
-                return (IWritableMount)computerCraft_createSaveDirMount.invoke( null, world, subPath, capacity );
-            } catch (Exception e){
+            try
+            {
+                return (IWritableMount) computerCraft_createSaveDirMount.invoke( null, world, subPath, capacity );
+            }
+            catch( Exception e )
+            {
                 // It failed
             }
         }
@@ -148,9 +157,12 @@ public final class ComputerCraftAPI
         findCC();
         if( computerCraft_createResourceMount != null )
         {
-            try {
-                return (IMount)computerCraft_createResourceMount.invoke( null, modClass, domain, subPath );
-            } catch (Exception e){
+            try
+            {
+                return (IMount) computerCraft_createResourceMount.invoke( null, modClass, domain, subPath );
+            }
+            catch( Exception e )
+            {
                 // It failed
             }
         }
@@ -158,20 +170,23 @@ public final class ComputerCraftAPI
     }
 
     /**
-     * Registers a peripheral handler to convert blocks into {@link IPeripheral} implementations.
+     * Registers a peripheral provider to convert blocks into {@link IPeripheral} implementations.
      *
-     * @param handler The peripheral provider to register.
+     * @param provider The peripheral provider to register.
      * @see dan200.computercraft.api.peripheral.IPeripheral
      * @see dan200.computercraft.api.peripheral.IPeripheralProvider
      */
-    public static void registerPeripheralProvider( @Nonnull IPeripheralProvider handler )
+    public static void registerPeripheralProvider( @Nonnull IPeripheralProvider provider )
     {
         findCC();
-        if ( computerCraft_registerPeripheralProvider != null)
+        if( computerCraft_registerPeripheralProvider != null )
         {
-            try {
-                computerCraft_registerPeripheralProvider.invoke( null, handler );
-            } catch (Exception e){
+            try
+            {
+                computerCraft_registerPeripheralProvider.invoke( null, provider );
+            }
+            catch( Exception e )
+            {
                 // It failed
             }
         }
@@ -192,9 +207,12 @@ public final class ComputerCraftAPI
             findCC();
             if( computerCraft_registerTurtleUpgrade != null )
             {
-                try {
+                try
+                {
                     computerCraft_registerTurtleUpgrade.invoke( null, upgrade );
-                } catch( Exception e ) {
+                }
+                catch( Exception e )
+                {
                     // It failed
                 }
             }
@@ -202,19 +220,22 @@ public final class ComputerCraftAPI
     }
 
     /**
-     * Registers a bundled redstone handler to provide bundled redstone output for blocks.
+     * Registers a bundled redstone provider to provide bundled redstone output for blocks.
      *
-     * @param handler The bundled redstone provider to register.
+     * @param provider The bundled redstone provider to register.
      * @see dan200.computercraft.api.redstone.IBundledRedstoneProvider
      */
-    public static void registerBundledRedstoneProvider( @Nonnull IBundledRedstoneProvider handler )
+    public static void registerBundledRedstoneProvider( @Nonnull IBundledRedstoneProvider provider )
     {
         findCC();
         if( computerCraft_registerBundledRedstoneProvider != null )
         {
-            try {
-                computerCraft_registerBundledRedstoneProvider.invoke( null, handler );
-            } catch (Exception e) {
+            try
+            {
+                computerCraft_registerBundledRedstoneProvider.invoke( null, provider );
+            }
+            catch( Exception e )
+            {
                 // It failed
             }
         }
@@ -235,9 +256,12 @@ public final class ComputerCraftAPI
         findCC();
         if( computerCraft_getDefaultBundledRedstoneOutput != null )
         {
-            try {
-                return (Integer)computerCraft_getDefaultBundledRedstoneOutput.invoke( null, world, pos, side );
-            } catch (Exception e){
+            try
+            {
+                return (Integer) computerCraft_getDefaultBundledRedstoneOutput.invoke( null, world, pos, side );
+            }
+            catch( Exception e )
+            {
                 // It failed
             }
         }
@@ -245,40 +269,46 @@ public final class ComputerCraftAPI
     }
 
     /**
-     * Registers a media handler to provide {@link IMedia} implementations for Items
+     * Registers a media provider to provide {@link IMedia} implementations for Items
      *
-     * @param handler The media provider to register.
+     * @param provider The media provider to register.
      * @see dan200.computercraft.api.media.IMediaProvider
      */
-    public static void registerMediaProvider( @Nonnull IMediaProvider handler )
+    public static void registerMediaProvider( @Nonnull IMediaProvider provider )
     {
         findCC();
         if( computerCraft_registerMediaProvider != null )
         {
-            try {
-                computerCraft_registerMediaProvider.invoke( null, handler );
-            } catch (Exception e){
+            try
+            {
+                computerCraft_registerMediaProvider.invoke( null, provider );
+            }
+            catch( Exception e )
+            {
                 // It failed
             }
         }
     }
 
     /**
-     * Registers a permission handler to restrict where turtles can move or build.
+     * Registers a permission provider to restrict where turtles can move or build.
      *
-     * @param handler The turtle permission provider to register.
+     * @param provider The turtle permission provider to register.
      * @see dan200.computercraft.api.permissions.ITurtlePermissionProvider
      * @deprecated Prefer using {@link dan200.computercraft.api.turtle.event.TurtleBlockEvent} or the standard Forge events.
      */
     @Deprecated
-    public static void registerPermissionProvider( @Nonnull ITurtlePermissionProvider handler )
+    public static void registerPermissionProvider( @Nonnull ITurtlePermissionProvider provider )
     {
         findCC();
         if( computerCraft_registerPermissionProvider != null )
         {
-            try {
-                computerCraft_registerPermissionProvider.invoke( null, handler );
-            } catch (Exception e) {
+            try
+            {
+                computerCraft_registerPermissionProvider.invoke( null, provider );
+            }
+            catch( Exception e )
+            {
                 // It failed
             }
         }
@@ -287,10 +317,14 @@ public final class ComputerCraftAPI
     public static void registerPocketUpgrade( @Nonnull IPocketUpgrade upgrade )
     {
         findCC();
-        if(computerCraft_registerPocketUpgrade != null) {
-            try {
+        if( computerCraft_registerPocketUpgrade != null )
+        {
+            try
+            {
                 computerCraft_registerPocketUpgrade.invoke( null, upgrade );
-            } catch (Exception e) {
+            }
+            catch( Exception e )
+            {
                 // It failed
             }
         }
@@ -309,7 +343,9 @@ public final class ComputerCraftAPI
             try
             {
                 return (IPacketNetwork) computerCraft_getWirelessNetwork.invoke( null );
-            } catch (Exception e) {
+            }
+            catch( Exception e )
+            {
                 // It failed;
             }
         }
@@ -394,12 +430,14 @@ public final class ComputerCraftAPI
 
     private static void findCC()
     {
-        if( !ccSearched ) {
-            try {
+        if( !ccSearched )
+        {
+            try
+            {
                 computerCraft = Class.forName( "dan200.computercraft.ComputerCraft" );
-                computerCraft_getVersion = findCCMethod( "getVersion", new Class<?>[]{
+                computerCraft_getVersion = findCCMethod( "getVersion", new Class<?>[] {
                 } );
-                computerCraft_createUniqueNumberedSaveDir = findCCMethod( "createUniqueNumberedSaveDir", new Class<?>[]{
+                computerCraft_createUniqueNumberedSaveDir = findCCMethod( "createUniqueNumberedSaveDir", new Class<?>[] {
                     World.class, String.class
                 } );
                 computerCraft_createSaveDirMount = findCCMethod( "createSaveDirMount", new Class<?>[] {
@@ -437,12 +475,16 @@ public final class ComputerCraftAPI
                 computerCraft_createWiredNodeForElement = findCCMethod( "createWiredNodeForElement", new Class<?>[] {
                     IWiredElement.class
                 } );
-                computerCraft_getWiredElementAt = findCCMethod( "getWiredElementAt", new Class<?>[]{
+                computerCraft_getWiredElementAt = findCCMethod( "getWiredElementAt", new Class<?>[] {
                     IBlockAccess.class, BlockPos.class, EnumFacing.class
                 } );
-            } catch( Exception e ) {
+            }
+            catch( Exception e )
+            {
                 System.out.println( "ComputerCraftAPI: ComputerCraft not found." );
-            } finally {
+            }
+            finally
+            {
                 ccSearched = true;
             }
         }
@@ -450,13 +492,12 @@ public final class ComputerCraftAPI
 
     private static Method findCCMethod( String name, Class<?>[] args )
     {
-        try {
-            if( computerCraft != null )
-            {
-                return computerCraft.getMethod( name, args );
-            }
-            return null;
-        } catch( NoSuchMethodException e ) {
+        try
+        {
+            return computerCraft != null ? computerCraft.getMethod( name, args ) : null;
+        }
+        catch( NoSuchMethodException e )
+        {
             System.out.println( "ComputerCraftAPI: ComputerCraft method " + name + " not found." );
             return null;
         }

src/main/java/dan200/computercraft/api/filesystem/IFileSystem.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
+ */
+
 package dan200.computercraft.api.filesystem;
 
 import java.io.IOException;

src/main/java/dan200/computercraft/api/filesystem/IMount.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/filesystem/IWritableMount.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/filesystem/package-info.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/lua/IComputerSystem.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
+ */
+
 package dan200.computercraft.api.lua;
 
 import dan200.computercraft.api.filesystem.IFileSystem;

src/main/java/dan200/computercraft/api/lua/ILuaAPI.java

@@ -1,7 +1,7 @@
 /*
- * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2016. Do not distribute without permission.
- * Send enquiries to dratcliffe@gmail.com
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 
 package dan200.computercraft.api.lua;

src/main/java/dan200/computercraft/api/lua/ILuaAPIFactory.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
+ */
+
 package dan200.computercraft.api.lua;
 
 import dan200.computercraft.api.ComputerCraftAPI;

src/main/java/dan200/computercraft/api/lua/ILuaContext.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/lua/ILuaObject.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/lua/ILuaTask.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/lua/LuaException.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/lua/package-info.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/media/IMedia.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/media/IMediaProvider.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/media/package-info.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/network/IPacketNetwork.java

@@ -1,7 +1,7 @@
 /*
- * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
- * Send enquiries to dratcliffe@gmail.com
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 package dan200.computercraft.api.network;
 

src/main/java/dan200/computercraft/api/network/IPacketReceiver.java

@@ -1,7 +1,7 @@
 /*
- * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
- * Send enquiries to dratcliffe@gmail.com
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 package dan200.computercraft.api.network;
 

src/main/java/dan200/computercraft/api/network/IPacketSender.java

@@ -1,7 +1,7 @@
 /*
- * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
- * Send enquiries to dratcliffe@gmail.com
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 package dan200.computercraft.api.network;
 

src/main/java/dan200/computercraft/api/network/Packet.java

@@ -1,7 +1,7 @@
 /*
- * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
- * Send enquiries to dratcliffe@gmail.com
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 package dan200.computercraft.api.network;
 

src/main/java/dan200/computercraft/api/network/package-info.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/network/wired/IWiredElement.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
+ */
+
 package dan200.computercraft.api.network.wired;
 
 import dan200.computercraft.api.ComputerCraftAPI;

src/main/java/dan200/computercraft/api/network/wired/IWiredNetwork.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
+ */
+
 package dan200.computercraft.api.network.wired;
 
 import dan200.computercraft.api.peripheral.IPeripheral;

src/main/java/dan200/computercraft/api/network/wired/IWiredNetworkChange.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
+ */
+
 package dan200.computercraft.api.network.wired;
 
 import dan200.computercraft.api.peripheral.IPeripheral;

src/main/java/dan200/computercraft/api/network/wired/IWiredNode.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
+ */
+
 package dan200.computercraft.api.network.wired;
 
 import dan200.computercraft.api.network.IPacketNetwork;

src/main/java/dan200/computercraft/api/network/wired/IWiredSender.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
+ */
+
 package dan200.computercraft.api.network.wired;
 
 import dan200.computercraft.api.network.IPacketSender;

src/main/java/dan200/computercraft/api/network/wired/package-info.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/package-info.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/peripheral/IComputerAccess.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 
@@ -39,7 +39,10 @@ public interface IComputerAccess
      * @see IMount
      */
     @Nullable
-    String mount( @Nonnull String desiredLocation, @Nonnull IMount mount );
+    default String mount( @Nonnull String desiredLocation, @Nonnull IMount mount )
+    {
+        return mount( desiredLocation, mount, getAttachmentName() );
+    }
 
     /**
      * Mount a mount onto the computer's file system in a read only mode.
@@ -75,7 +78,10 @@ public interface IComputerAccess
      * @see IMount
      */
     @Nullable
-    String mountWritable( @Nonnull String desiredLocation, @Nonnull IWritableMount mount );
+    default String mountWritable( @Nonnull String desiredLocation, @Nonnull IWritableMount mount )
+    {
+        return mountWritable( desiredLocation, mount, getAttachmentName() );
+    }
 
     /**
      * Mount a mount onto the computer's file system in a writable mode.

src/main/java/dan200/computercraft/api/peripheral/IPeripheral.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/peripheral/IPeripheralProvider.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/peripheral/package-info.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/permissions/ITurtlePermissionProvider.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/permissions/package-info.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/pocket/IPocketAccess.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
+ */
+
 package dan200.computercraft.api.pocket;
 
 import dan200.computercraft.api.peripheral.IPeripheral;

src/main/java/dan200/computercraft/api/pocket/IPocketUpgrade.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
+ */
+
 package dan200.computercraft.api.pocket;
 
 import dan200.computercraft.api.ComputerCraftAPI;

src/main/java/dan200/computercraft/api/redstone/IBundledRedstoneProvider.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/redstone/package-info.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/ITurtleAccess.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/ITurtleCommand.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/ITurtleUpgrade.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/TurtleAnimation.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/TurtleCommandResult.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/TurtleSide.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/TurtleUpgradeType.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/TurtleVerb.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/event/TurtleAction.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/event/TurtleActionEvent.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
+ */
+
 package dan200.computercraft.api.turtle.event;
 
 import dan200.computercraft.api.turtle.ITurtleAccess;

src/main/java/dan200/computercraft/api/turtle/event/TurtleAttackEvent.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/event/TurtleBlockEvent.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/event/TurtleEvent.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/event/TurtleInventoryEvent.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of the public ComputerCraft API - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
+ * For help using the API, and posting your mods, visit the forums at computercraft.info.
+ */
+
 package dan200.computercraft.api.turtle.event;
 
 import dan200.computercraft.api.turtle.ITurtleAccess;

src/main/java/dan200/computercraft/api/turtle/event/TurtlePlayerEvent.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/event/package-info.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/api/turtle/package-info.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of the public ComputerCraft API - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. This API may be redistributed unmodified and in full only.
+ * Copyright Daniel Ratcliffe, 2011-2019. This API may be redistributed unmodified and in full only.
  * For help using the API, and posting your mods, visit the forums at computercraft.info.
  */
 

src/main/java/dan200/computercraft/client/ClientTableFormatter.java

@@ -0,0 +1,81 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
+package dan200.computercraft.client;
+
+import dan200.computercraft.shared.command.text.ChatHelpers;
+import dan200.computercraft.shared.command.text.TableBuilder;
+import dan200.computercraft.shared.command.text.TableFormatter;
+import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.FontRenderer;
+import net.minecraft.client.gui.GuiNewChat;
+import net.minecraft.util.math.MathHelper;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.util.text.TextFormatting;
+import org.apache.commons.lang3.StringUtils;
+
+import javax.annotation.Nullable;
+
+public class ClientTableFormatter implements TableFormatter
+{
+    public static final ClientTableFormatter INSTANCE = new ClientTableFormatter();
+
+    private static Int2IntOpenHashMap lastHeights = new Int2IntOpenHashMap();
+
+    private FontRenderer renderer()
+    {
+        return Minecraft.getMinecraft().fontRenderer;
+    }
+
+    @Override
+    @Nullable
+    public ITextComponent getPadding( ITextComponent component, int width )
+    {
+        int extraWidth = width - getWidth( component );
+        if( extraWidth <= 0 ) return null;
+
+        FontRenderer renderer = renderer();
+
+        float spaceWidth = renderer.getCharWidth( ' ' );
+        int spaces = MathHelper.floor( extraWidth / spaceWidth );
+        int extra = extraWidth - (int) (spaces * spaceWidth);
+
+        return ChatHelpers.coloured( StringUtils.repeat( ' ', spaces ) + StringUtils.repeat( (char) 712, extra ), TextFormatting.GRAY );
+    }
+
+    @Override
+    public int getColumnPadding()
+    {
+        return 3;
+    }
+
+    @Override
+    public int getWidth( ITextComponent component )
+    {
+        return renderer().getStringWidth( component.getFormattedText() );
+    }
+
+    @Override
+    public void writeLine( int id, ITextComponent component )
+    {
+        Minecraft.getMinecraft().ingameGUI.getChatGUI().printChatMessageWithOptionalDeletion( component, id );
+    }
+
+    @Override
+    public int display( TableBuilder table )
+    {
+        GuiNewChat chat = Minecraft.getMinecraft().ingameGUI.getChatGUI();
+
+        int lastHeight = lastHeights.get( table.getId() );
+
+        int height = TableFormatter.super.display( table );
+        lastHeights.put( table.getId(), height );
+
+        for( int i = height; i < lastHeight; i++ ) chat.deleteChatLine( i + table.getId() );
+        return height;
+    }
+}

src/main/java/dan200/computercraft/client/FrameInfo.java

@@ -0,0 +1,49 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
+package dan200.computercraft.client;
+
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import net.minecraftforge.fml.common.gameevent.TickEvent;
+
+public class FrameInfo
+{
+    private static final FrameInfo instance = new FrameInfo();
+
+    public static FrameInfo instance()
+    {
+        return instance;
+    }
+
+    private int tick;
+    private long renderFrame;
+
+    private FrameInfo()
+    {
+    }
+
+    public boolean getGlobalCursorBlink()
+    {
+        return (tick / 8) % 2 == 0;
+    }
+
+    public long getRenderFrame()
+    {
+        return renderFrame;
+    }
+
+    @SubscribeEvent
+    public void onTick( TickEvent.ClientTickEvent event )
+    {
+        if( event.phase == TickEvent.Phase.START ) tick++;
+    }
+
+    @SubscribeEvent
+    public void onRenderTick( TickEvent.RenderTickEvent event )
+    {
+        if( event.phase == TickEvent.Phase.START ) renderFrame++;
+    }
+}

src/main/java/dan200/computercraft/client/gui/FixedWidthFontRenderer.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
@@ -8,6 +8,7 @@ package dan200.computercraft.client.gui;
 
 import dan200.computercraft.core.terminal.TextBuffer;
 import dan200.computercraft.shared.util.Palette;
+import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.BufferBuilder;
 import net.minecraft.client.renderer.GlStateManager;
 import net.minecraft.client.renderer.Tessellator;
@@ -20,22 +21,30 @@ import java.util.Arrays;
 
 public class FixedWidthFontRenderer
 {
-    private static ResourceLocation font = new ResourceLocation( "computercraft", "textures/gui/term_font.png" );
-    public static ResourceLocation background = new ResourceLocation( "computercraft", "textures/gui/term_background.png" );
+    private static final ResourceLocation FONT = new ResourceLocation( "computercraft", "textures/gui/term_font.png" );
+    public static final ResourceLocation BACKGROUND = new ResourceLocation( "computercraft", "textures/gui/term_background.png" );
 
-    public static int FONT_HEIGHT = 9;
-    public static int FONT_WIDTH = 6;
+    public static final int FONT_HEIGHT = 9;
+    public static final int FONT_WIDTH = 6;
 
-    private TextureManager m_textureManager;
+    private static FixedWidthFontRenderer instance;
 
-    public FixedWidthFontRenderer( TextureManager textureManager )
+    public static FixedWidthFontRenderer instance()
     {
-        m_textureManager = textureManager;
+        if( instance != null ) return instance;
+        return instance = new FixedWidthFontRenderer();
+    }
+
+    private final TextureManager m_textureManager;
+
+    private FixedWidthFontRenderer()
+    {
+        m_textureManager = Minecraft.getMinecraft().getTextureManager();
     }
 
     private static void greyscaleify( double[] rgb )
     {
-        Arrays.fill( rgb, ( rgb[0] + rgb[1] + rgb[2] ) / 3.0f );
+        Arrays.fill( rgb, (rgb[0] + rgb[1] + rgb[2]) / 3.0f );
     }
 
     private void drawChar( BufferBuilder renderer, double x, double y, int index, int color, Palette p, boolean greyscale )
@@ -44,13 +53,13 @@ public class FixedWidthFontRenderer
         int row = index / 16;
 
         double[] colour = p.getColour( 15 - color );
-        if(greyscale)
+        if( greyscale )
         {
             greyscaleify( colour );
         }
-        float r = (float)colour[0];
-        float g = (float)colour[1];
-        float b = (float)colour[2];
+        float r = (float) colour[0];
+        float g = (float) colour[1];
+        float b = (float) colour[2];
 
         int xStart = 1 + column * (FONT_WIDTH + 2);
         int yStart = 1 + row * (FONT_HEIGHT + 2);
@@ -66,13 +75,13 @@ public class FixedWidthFontRenderer
     private void drawQuad( BufferBuilder renderer, double x, double y, int color, double width, Palette p, boolean greyscale )
     {
         double[] colour = p.getColour( 15 - color );
-        if(greyscale)
+        if( greyscale )
         {
             greyscaleify( colour );
         }
-        float r = (float)colour[0];
-        float g = (float)colour[1];
-        float b = (float)colour[2];
+        float r = (float) colour[0];
+        float g = (float) colour[1];
+        float b = (float) colour[2];
 
         renderer.pos( x, y, 0.0 ).color( r, g, b, 1.0f ).endVertex();
         renderer.pos( x, y + FONT_HEIGHT, 0.0 ).color( r, g, b, 1.0f ).endVertex();
@@ -96,7 +105,7 @@ public class FixedWidthFontRenderer
         if( leftMarginSize > 0.0 )
         {
             int colour1 = "0123456789abcdef".indexOf( backgroundColour.charAt( 0 ) );
-            if( colour1 < 0 || (greyScale && !isGreyScale(colour1)) )
+            if( colour1 < 0 || (greyScale && !isGreyScale( colour1 )) )
             {
                 colour1 = 15;
             }
@@ -105,7 +114,7 @@ public class FixedWidthFontRenderer
         if( rightMarginSize > 0.0 )
         {
             int colour2 = "0123456789abcdef".indexOf( backgroundColour.charAt( backgroundColour.length() - 1 ) );
-            if( colour2 < 0 || (greyScale && !isGreyScale(colour2)) )
+            if( colour2 < 0 || (greyScale && !isGreyScale( colour2 )) )
             {
                 colour2 = 15;
             }
@@ -114,7 +123,7 @@ public class FixedWidthFontRenderer
         for( int i = 0; i < backgroundColour.length(); i++ )
         {
             int colour = "0123456789abcdef".indexOf( backgroundColour.charAt( i ) );
-            if( colour < 0 || ( greyScale && !isGreyScale( colour ) ) )
+            if( colour < 0 || (greyScale && !isGreyScale( colour )) )
             {
                 colour = 15;
             }
@@ -135,7 +144,7 @@ public class FixedWidthFontRenderer
         {
             // Switch colour
             int colour = "0123456789abcdef".indexOf( textColour.charAt( i ) );
-            if( colour < 0 || ( greyScale && !isGreyScale( colour ) ) )
+            if( colour < 0 || (greyScale && !isGreyScale( colour )) )
             {
                 colour = 0;
             }
@@ -157,26 +166,26 @@ public class FixedWidthFontRenderer
         if( backgroundColour != null )
         {
             // Bind the background texture
-            m_textureManager.bindTexture( background );
+            m_textureManager.bindTexture( BACKGROUND );
 
             // Draw the quads
             drawStringBackgroundPart( x, y, backgroundColour, leftMarginSize, rightMarginSize, greyScale, p );
         }
-    
+
         // Draw text
         if( s != null && textColour != null )
         {
             // Bind the font texture
             bindFont();
-            
+
             // Draw the quads
             drawStringTextPart( x, y, s, textColour, greyScale, p );
         }
     }
 
-    public int getStringWidth(String s)
+    public int getStringWidth( String s )
     {
-        if(s == null)
+        if( s == null )
         {
             return 0;
         }
@@ -185,7 +194,7 @@ public class FixedWidthFontRenderer
 
     public void bindFont()
     {
-        m_textureManager.bindTexture( font );
+        m_textureManager.bindTexture( FONT );
         GlStateManager.glTexParameteri( GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL11.GL_CLAMP );
     }
 }

src/main/java/dan200/computercraft/client/gui/GuiComputer.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
@@ -9,6 +9,7 @@ package dan200.computercraft.client.gui;
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.client.gui.widgets.WidgetTerminal;
 import dan200.computercraft.shared.computer.blocks.TileComputer;
+import dan200.computercraft.shared.computer.core.ClientComputer;
 import dan200.computercraft.shared.computer.core.ComputerFamily;
 import dan200.computercraft.shared.computer.core.IComputer;
 import dan200.computercraft.shared.computer.inventory.ContainerComputer;
@@ -23,17 +24,17 @@ import java.io.IOException;
 
 public class GuiComputer extends GuiContainer
 {
-    private static final ResourceLocation background = new ResourceLocation( "computercraft", "textures/gui/corners.png" );
-    private static final ResourceLocation backgroundAdvanced = new ResourceLocation( "computercraft", "textures/gui/corners_advanced.png" );
-    private static final ResourceLocation backgroundCommand = new ResourceLocation( "computercraft", "textures/gui/corners_command.png" );
+    private static final ResourceLocation BACKGROUND = new ResourceLocation( "computercraft", "textures/gui/corners.png" );
+    private static final ResourceLocation BACKGROUND_ADVANCED = new ResourceLocation( "computercraft", "textures/gui/corners_advanced.png" );
+    private static final ResourceLocation BACKGROUND_COMMAND = new ResourceLocation( "computercraft", "textures/gui/corners_command.png" );
 
     private final ComputerFamily m_family;
-    private final IComputer m_computer;
+    private final ClientComputer m_computer;
     private final int m_termWidth;
     private final int m_termHeight;
     private WidgetTerminal m_terminal;
 
-    public GuiComputer( Container container, ComputerFamily family, IComputer computer, int termWidth, int termHeight )
+    public GuiComputer( Container container, ComputerFamily family, ClientComputer computer, int termWidth, int termHeight )
     {
         super( container );
         m_family = family;
@@ -43,12 +44,18 @@ public class GuiComputer extends GuiContainer
         m_terminal = null;
     }
 
+    @Deprecated
+    public GuiComputer( Container container, ComputerFamily family, IComputer computer, int termWidth, int termHeight )
+    {
+        this( container, family, (ClientComputer) computer, termWidth, termHeight );
+    }
+
     public GuiComputer( TileComputer computer )
     {
         this(
             new ContainerComputer( computer ),
             computer.getFamily(),
-            computer.createComputer(),
+            computer.createClientComputer(),
             ComputerCraft.terminalWidth_computer,
             ComputerCraft.terminalHeight_computer
         );
@@ -87,7 +94,7 @@ public class GuiComputer extends GuiContainer
     }
 
     @Override
-    protected void keyTyped(char c, int k) throws IOException
+    protected void keyTyped( char c, int k ) throws IOException
     {
         if( k == 1 )
         {
@@ -95,7 +102,7 @@ public class GuiComputer extends GuiContainer
         }
         else
         {
-            if( m_terminal.keyTyped( c, k ) ) keyHandled = true;
+            if( m_terminal.onKeyTyped( c, k ) ) keyHandled = true;
         }
     }
 
@@ -123,11 +130,11 @@ public class GuiComputer extends GuiContainer
     public void handleKeyboardInput() throws IOException
     {
         super.handleKeyboardInput();
-        if( m_terminal.handleKeyboardInput() ) keyHandled = true;
+        if( m_terminal.onKeyboardInput() ) keyHandled = true;
     }
 
     @Override
-    protected void drawGuiContainerForegroundLayer(int par1, int par2)
+    protected void drawGuiContainerForegroundLayer( int par1, int par2 )
     {
     }
 
@@ -148,9 +155,9 @@ public class GuiComputer extends GuiContainer
         // Draw background
         drawDefaultBackground();
 
-           // Draw terminal
+        // Draw terminal
         m_terminal.draw( this.mc, startX, startY, mouseX, mouseY );
-        
+
         // Draw a border around the terminal
         GlStateManager.color( 1.0f, 1.0f, 1.0f, 1.0f );
         switch( m_family )
@@ -158,30 +165,30 @@ public class GuiComputer extends GuiContainer
             case Normal:
             default:
             {
-                this.mc.getTextureManager().bindTexture( background );
+                this.mc.getTextureManager().bindTexture( BACKGROUND );
                 break;
             }
             case Advanced:
             {
-                this.mc.getTextureManager().bindTexture( backgroundAdvanced );
+                this.mc.getTextureManager().bindTexture( BACKGROUND_ADVANCED );
                 break;
             }
             case Command:
             {
-                this.mc.getTextureManager().bindTexture( backgroundCommand );
+                this.mc.getTextureManager().bindTexture( BACKGROUND_COMMAND );
                 break;
             }
         }
 
-        drawTexturedModalRect(startX - 12, startY - 12, 12, 28, 12, 12);
-        drawTexturedModalRect(startX - 12, endY, 12, 40, 12, 16);
-        drawTexturedModalRect(endX, startY - 12, 24, 28, 12, 12);
-        drawTexturedModalRect(endX, endY, 24, 40, 12, 16);
+        drawTexturedModalRect( startX - 12, startY - 12, 12, 28, 12, 12 );
+        drawTexturedModalRect( startX - 12, endY, 12, 40, 12, 16 );
+        drawTexturedModalRect( endX, startY - 12, 24, 28, 12, 12 );
+        drawTexturedModalRect( endX, endY, 24, 40, 12, 16 );
 
-        drawTexturedModalRect(startX, startY-12, 0, 0, endX - startX, 12);
-        drawTexturedModalRect(startX, endY, 0, 12, endX - startX, 16);
+        drawTexturedModalRect( startX, startY - 12, 0, 0, endX - startX, 12 );
+        drawTexturedModalRect( startX, endY, 0, 12, endX - startX, 16 );
 
-        drawTexturedModalRect(startX-12, startY, 0, 28, 12, endY - startY);
-        drawTexturedModalRect(endX, startY, 36, 28, 12, endY - startY);
+        drawTexturedModalRect( startX - 12, startY, 0, 28, 12, endY - startY );
+        drawTexturedModalRect( endX, startY, 36, 28, 12, endY - startY );
     }
 }

src/main/java/dan200/computercraft/client/gui/GuiConfigCC.java

@@ -1,34 +1,25 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.client.gui;
 
 import dan200.computercraft.ComputerCraft;
+import dan200.computercraft.shared.Config;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.GuiScreen;
-import net.minecraftforge.common.config.ConfigElement;
-import net.minecraftforge.common.config.Configuration;
-import net.minecraftforge.common.config.Property;
 import net.minecraftforge.fml.client.IModGuiFactory;
 import net.minecraftforge.fml.client.config.GuiConfig;
-import net.minecraftforge.fml.client.config.IConfigElement;
 
-import java.util.ArrayList;
-import java.util.List;
 import java.util.Set;
 
 public class GuiConfigCC extends GuiConfig
 {
     public GuiConfigCC( GuiScreen parentScreen )
     {
-        super( parentScreen, getConfigElements(), ComputerCraft.MOD_ID, false, false, "CC: Tweaked" );
-    }
-
-    private static List<IConfigElement> getConfigElements()
-    {
-        ArrayList<IConfigElement> elements = new ArrayList<>();
-        for (Property property : ComputerCraft.Config.config.getCategory( Configuration.CATEGORY_GENERAL ).getOrderedValues())
-        {
-            elements.add( new ConfigElement( property ) );
-        }
-        return elements;
+        super( parentScreen, Config.getConfigElements(), ComputerCraft.MOD_ID, false, false, "CC: Tweaked" );
     }
 
     public static class Factory

src/main/java/dan200/computercraft/client/gui/GuiDiskDrive.java

@@ -1,54 +1,52 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
 package dan200.computercraft.client.gui;
 
 import dan200.computercraft.shared.peripheral.diskdrive.ContainerDiskDrive;
-import dan200.computercraft.shared.peripheral.diskdrive.TileDiskDrive;
 import net.minecraft.client.gui.inventory.GuiContainer;
 import net.minecraft.client.renderer.GlStateManager;
 import net.minecraft.client.resources.I18n;
-import net.minecraft.entity.player.InventoryPlayer;
 import net.minecraft.util.ResourceLocation;
 
 public class GuiDiskDrive extends GuiContainer
 {
-    private static final ResourceLocation background = new ResourceLocation( "computercraft", "textures/gui/diskdrive.png" );
+    private static final ResourceLocation BACKGROUND = new ResourceLocation( "computercraft", "textures/gui/diskdrive.png" );
 
-    private TileDiskDrive m_diskDrive;
+    private final ContainerDiskDrive m_container;
 
-    public GuiDiskDrive( InventoryPlayer inventoryplayer, TileDiskDrive diskDrive )
+    public GuiDiskDrive( ContainerDiskDrive container )
     {
-        super( new ContainerDiskDrive(inventoryplayer, diskDrive) );
-        m_diskDrive = diskDrive;
+        super( container );
+        m_container = container;
     }
 
     @Override
-    protected void drawGuiContainerForegroundLayer(int par1, int par2)
+    protected void drawGuiContainerForegroundLayer( int par1, int par2 )
     {
-        String title = m_diskDrive.getDisplayName().getUnformattedText();
-        fontRenderer.drawString( title, (xSize - fontRenderer.getStringWidth(title)) / 2, 6, 0x404040 );
-        fontRenderer.drawString( I18n.format("container.inventory"), 8, (ySize - 96) + 2, 0x404040 );
+        String title = m_container.getDiskDrive().getDisplayName().getUnformattedText();
+        fontRenderer.drawString( title, (xSize - fontRenderer.getStringWidth( title )) / 2, 6, 0x404040 );
+        fontRenderer.drawString( I18n.format( "container.inventory" ), 8, (ySize - 96) + 2, 0x404040 );
     }
 
     @Override
-    protected void drawGuiContainerBackgroundLayer(float f, int i, int j)
+    protected void drawGuiContainerBackgroundLayer( float f, int i, int j )
     {
         GlStateManager.color( 1.0F, 1.0F, 1.0F, 1.0F );
-        this.mc.getTextureManager().bindTexture( background );
+        this.mc.getTextureManager().bindTexture( BACKGROUND );
         int l = (width - xSize) / 2;
         int i1 = (height - ySize) / 2;
-        drawTexturedModalRect(l, i1, 0, 0, xSize, ySize);
+        drawTexturedModalRect( l, i1, 0, 0, xSize, ySize );
     }
 
     @Override
-    public void drawScreen( int mouseX, int mouseY, float partialTicks)
+    public void drawScreen( int mouseX, int mouseY, float partialTicks )
     {
         drawDefaultBackground();
-        super.drawScreen(mouseX, mouseY, partialTicks);
-        renderHoveredToolTip(mouseX, mouseY);
+        super.drawScreen( mouseX, mouseY, partialTicks );
+        renderHoveredToolTip( mouseX, mouseY );
     }
 }

src/main/java/dan200/computercraft/client/gui/GuiPocketComputer.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 

src/main/java/dan200/computercraft/client/gui/GuiPrinter.java

@@ -1,62 +1,58 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
 package dan200.computercraft.client.gui;
 
 import dan200.computercraft.shared.peripheral.printer.ContainerPrinter;
-import dan200.computercraft.shared.peripheral.printer.TilePrinter;
 import net.minecraft.client.gui.inventory.GuiContainer;
 import net.minecraft.client.renderer.GlStateManager;
 import net.minecraft.client.resources.I18n;
-import net.minecraft.entity.player.InventoryPlayer;
 import net.minecraft.util.ResourceLocation;
 
 public class GuiPrinter extends GuiContainer
 {
-    private static final ResourceLocation background = new ResourceLocation( "computercraft", "textures/gui/printer.png" );
-    
-    private TilePrinter m_printer;
-    private ContainerPrinter m_container;
+    private static final ResourceLocation BACKGROUND = new ResourceLocation( "computercraft", "textures/gui/printer.png" );
 
-    public GuiPrinter(InventoryPlayer inventoryplayer, TilePrinter printer)
+    private final ContainerPrinter m_container;
+
+    public GuiPrinter( ContainerPrinter container )
     {
-        super(new ContainerPrinter(inventoryplayer, printer));
-        m_printer = printer;
-        m_container = (ContainerPrinter)inventorySlots;
+        super( container );
+        m_container = container;
     }
 
     @Override
-    protected void drawGuiContainerForegroundLayer(int par1, int par2)
+    protected void drawGuiContainerForegroundLayer( int par1, int par2 )
     {
-        String title = m_printer.getDisplayName().getUnformattedText();
-        fontRenderer.drawString( title, (xSize - fontRenderer.getStringWidth(title)) / 2, 6, 0x404040 );
-        fontRenderer.drawString( I18n.format("container.inventory"), 8, (ySize - 96) + 2, 0x404040 );
+        String title = m_container.getPrinter().getDisplayName().getUnformattedText();
+        fontRenderer.drawString( title, (xSize - fontRenderer.getStringWidth( title )) / 2, 6, 0x404040 );
+        fontRenderer.drawString( I18n.format( "container.inventory" ), 8, (ySize - 96) + 2, 0x404040 );
     }
 
     @Override
-    protected void drawGuiContainerBackgroundLayer(float f, int i, int j)
+    protected void drawGuiContainerBackgroundLayer( float f, int i, int j )
     {
         GlStateManager.color( 1.0F, 1.0F, 1.0F, 1.0F );
-        this.mc.getTextureManager().bindTexture( background );
+        this.mc.getTextureManager().bindTexture( BACKGROUND );
         int startX = (width - xSize) / 2;
         int startY = (height - ySize) / 2;
-        drawTexturedModalRect(startX, startY, 0, 0, xSize, ySize);
-        
+        drawTexturedModalRect( startX, startY, 0, 0, xSize, ySize );
+
         boolean printing = m_container.isPrinting();
         if( printing )
         {
-            drawTexturedModalRect(startX + 34, startY + 21, 176, 0, 25, 45);
+            drawTexturedModalRect( startX + 34, startY + 21, 176, 0, 25, 45 );
         }
     }
 
     @Override
-    public void drawScreen( int mouseX, int mouseY, float partialTicks)
+    public void drawScreen( int mouseX, int mouseY, float partialTicks )
     {
         drawDefaultBackground();
-        super.drawScreen(mouseX, mouseY, partialTicks);
-        renderHoveredToolTip(mouseX, mouseY);
+        super.drawScreen( mouseX, mouseY, partialTicks );
+        renderHoveredToolTip( mouseX, mouseY );
     }
 }

src/main/java/dan200/computercraft/client/gui/GuiPrintout.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
@@ -30,42 +30,24 @@ public class GuiPrintout extends GuiContainer
         super( container );
 
         String[] text = ItemPrintout.getText( container.getStack() );
-        m_text = new TextBuffer[ text.length ];
-        for( int i = 0; i < m_text.length; ++i ) m_text[ i ] = new TextBuffer( text[ i ] );
+        m_text = new TextBuffer[text.length];
+        for( int i = 0; i < m_text.length; i++ ) m_text[i] = new TextBuffer( text[i] );
 
         String[] colours = ItemPrintout.getColours( container.getStack() );
-        m_colours = new TextBuffer[ colours.length ];
-        for( int i = 0; i < m_colours.length; ++i ) m_colours[ i ] = new TextBuffer( colours[ i ] );
+        m_colours = new TextBuffer[colours.length];
+        for( int i = 0; i < m_colours.length; i++ ) m_colours[i] = new TextBuffer( colours[i] );
 
         m_page = 0;
         m_pages = Math.max( m_text.length / ItemPrintout.LINES_PER_PAGE, 1 );
         m_book = ItemPrintout.getType( container.getStack() ) == ItemPrintout.Type.Book;
     }
 
-    @Override
-    public void initGui()
-    {
-        super.initGui();
-    }
-
-    @Override
-    public void onGuiClosed()
-    {
-        super.onGuiClosed();
-    }
-
     @Override
     public boolean doesGuiPauseGame()
     {
         return false;
     }
 
-    @Override
-    public void updateScreen()
-    {
-        super.updateScreen();
-    }
-
     @Override
     protected void keyTyped( char c, int k ) throws IOException
     {

src/main/java/dan200/computercraft/client/gui/GuiTurtle.java

@@ -1,24 +1,21 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
 package dan200.computercraft.client.gui;
 
 import dan200.computercraft.ComputerCraft;
-import dan200.computercraft.api.turtle.ITurtleAccess;
 import dan200.computercraft.client.gui.widgets.WidgetTerminal;
+import dan200.computercraft.shared.computer.core.ClientComputer;
 import dan200.computercraft.shared.computer.core.ComputerFamily;
-import dan200.computercraft.shared.computer.core.IComputer;
 import dan200.computercraft.shared.turtle.blocks.TileTurtle;
 import dan200.computercraft.shared.turtle.inventory.ContainerTurtle;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.inventory.GuiContainer;
 import net.minecraft.client.renderer.GlStateManager;
-import net.minecraft.entity.player.InventoryPlayer;
 import net.minecraft.util.ResourceLocation;
-import net.minecraft.world.World;
 import org.lwjgl.input.Keyboard;
 import org.lwjgl.input.Mouse;
 
@@ -26,32 +23,23 @@ import java.io.IOException;
 
 public class GuiTurtle extends GuiContainer
 {
-    private static final ResourceLocation background = new ResourceLocation( "computercraft", "textures/gui/turtle.png" );
-    private static final ResourceLocation backgroundAdvanced = new ResourceLocation( "computercraft", "textures/gui/turtle_advanced.png" );
-    
-    protected World m_world;
-    protected ContainerTurtle m_container;
+    private static final ResourceLocation BACKGROUND = new ResourceLocation( "computercraft", "textures/gui/turtle.png" );
+    private static final ResourceLocation BACKGROUND_ADVANCED = new ResourceLocation( "computercraft", "textures/gui/turtle_advanced.png" );
 
-    protected final ComputerFamily m_family;
-    protected final ITurtleAccess m_turtle;
-    protected final IComputer m_computer;
-    protected WidgetTerminal m_terminalGui;
-    
-    public GuiTurtle( World world, InventoryPlayer inventoryplayer, TileTurtle turtle )
-    {
-        this( world, turtle, new ContainerTurtle( inventoryplayer, turtle.getAccess() ) );
-    }
+    private ContainerTurtle m_container;
 
-    protected GuiTurtle( World world, TileTurtle turtle, ContainerTurtle container )
+    private final ComputerFamily m_family;
+    private final ClientComputer m_computer;
+    private WidgetTerminal m_terminalGui;
+
+    public GuiTurtle( TileTurtle turtle, ContainerTurtle container )
     {
         super( container );
 
-        m_world = world;
         m_container = container;
         m_family = turtle.getFamily();
-        m_turtle = turtle.getAccess();
-        m_computer = turtle.createComputer();
-        
+        m_computer = turtle.getClientComputer();
+
         xSize = 254;
         ySize = 217;
     }
@@ -60,10 +48,10 @@ public class GuiTurtle extends GuiContainer
     public void initGui()
     {
         super.initGui();
-        Keyboard.enableRepeatEvents(true);
+        Keyboard.enableRepeatEvents( true );
         m_terminalGui = new WidgetTerminal(
-            ( width - xSize ) / 2 + 8,
-            ( height - ySize ) / 2 + 8,
+            (width - xSize) / 2 + 8,
+            (height - ySize) / 2 + 8,
             ComputerCraft.terminalWidth_turtle,
             ComputerCraft.terminalHeight_turtle,
             () -> m_computer,
@@ -76,7 +64,7 @@ public class GuiTurtle extends GuiContainer
     public void onGuiClosed()
     {
         super.onGuiClosed();
-        Keyboard.enableRepeatEvents(false);
+        Keyboard.enableRepeatEvents( false );
     }
 
     @Override
@@ -87,7 +75,7 @@ public class GuiTurtle extends GuiContainer
     }
 
     @Override
-    protected void keyTyped(char c, int k) throws IOException
+    protected void keyTyped( char c, int k ) throws IOException
     {
         if( k == 1 )
         {
@@ -95,17 +83,17 @@ public class GuiTurtle extends GuiContainer
         }
         else
         {
-            if( m_terminalGui.keyTyped( c, k ) ) keyHandled = true;
+            if( m_terminalGui.onKeyTyped( c, k ) ) keyHandled = true;
         }
     }
-    
+
     @Override
-    protected void mouseClicked(int x, int y, int button) throws IOException
+    protected void mouseClicked( int x, int y, int button ) throws IOException
     {
         super.mouseClicked( x, y, button );
         m_terminalGui.mouseClicked( x, y, button );
     }
-    
+
     @Override
     public void handleMouseInput() throws IOException
     {
@@ -119,23 +107,23 @@ public class GuiTurtle extends GuiContainer
     public void handleKeyboardInput() throws IOException
     {
         super.handleKeyboardInput();
-        if( m_terminalGui.handleKeyboardInput() ) keyHandled = true;
+        if( m_terminalGui.onKeyboardInput() ) keyHandled = true;
     }
 
     protected void drawSelectionSlot( boolean advanced )
     {
         int x = (width - xSize) / 2;
         int y = (height - ySize) / 2;
-        
+
         // Draw selection slot
         int slot = m_container.getSelectedSlot();
         if( slot >= 0 )
         {
             GlStateManager.color( 1.0F, 1.0F, 1.0F, 1.0F );
-            int slotX = (slot%4);
-            int slotY = (slot/4);
-            this.mc.getTextureManager().bindTexture( advanced ? backgroundAdvanced : background );
-            drawTexturedModalRect(x + m_container.m_turtleInvStartX - 2 + slotX * 18, y + m_container.m_playerInvStartY - 2 + slotY * 18, 0, 217, 24, 24);
+            int slotX = (slot % 4);
+            int slotY = (slot / 4);
+            this.mc.getTextureManager().bindTexture( advanced ? BACKGROUND_ADVANCED : BACKGROUND );
+            drawTexturedModalRect( x + m_container.m_turtleInvStartX - 2 + slotX * 18, y + m_container.m_playerInvStartY - 2 + slotY * 18, 0, 217, 24, 24 );
         }
     }
 
@@ -145,22 +133,22 @@ public class GuiTurtle extends GuiContainer
         // Draw term
         boolean advanced = (m_family == ComputerFamily.Advanced);
         m_terminalGui.draw( Minecraft.getMinecraft(), 0, 0, mouseX, mouseY );
-        
+
         // Draw border/inventory
         GlStateManager.color( 1.0F, 1.0F, 1.0F, 1.0F );
-        this.mc.getTextureManager().bindTexture( advanced ? backgroundAdvanced : background );
+        this.mc.getTextureManager().bindTexture( advanced ? BACKGROUND_ADVANCED : BACKGROUND );
         int x = (width - xSize) / 2;
         int y = (height - ySize) / 2;
-        drawTexturedModalRect(x, y, 0, 0, xSize, ySize);
-        
+        drawTexturedModalRect( x, y, 0, 0, xSize, ySize );
+
         drawSelectionSlot( advanced );
     }
 
     @Override
-    public void drawScreen( int mouseX, int mouseY, float partialTicks)
+    public void drawScreen( int mouseX, int mouseY, float partialTicks )
     {
         drawDefaultBackground();
-        super.drawScreen(mouseX, mouseY, partialTicks);
-        renderHoveredToolTip(mouseX, mouseY);
+        super.drawScreen( mouseX, mouseY, partialTicks );
+        renderHoveredToolTip( mouseX, mouseY );
     }
 }

src/main/java/dan200/computercraft/client/gui/widgets/Widget.java

@@ -1,22 +1,13 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
 package dan200.computercraft.client.gui.widgets;
 
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.audio.PositionedSoundRecord;
-import net.minecraft.client.gui.FontRenderer;
 import net.minecraft.client.gui.Gui;
-import net.minecraft.client.renderer.*;
-import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
-import net.minecraft.init.SoundEvents;
-import net.minecraft.item.ItemStack;
-import org.lwjgl.opengl.GL11;
-
-import javax.annotation.Nonnull;
 
 public abstract class Widget extends Gui
 {
@@ -65,17 +56,29 @@ public abstract class Widget extends Gui
     {
     }
 
-    public boolean handleKeyboardInput()
+    public boolean onKeyboardInput()
     {
         return false;
     }
 
+    @Deprecated
+    public void handleKeyboardInput()
+    {
+        onKeyboardInput();
+    }
+
     public void mouseClicked( int mouseX, int mouseY, int mouseButton )
     {
     }
 
-    public boolean keyTyped( char c, int k )
+    public boolean onKeyTyped( char c, int k )
     {
         return false;
     }
+
+    @Deprecated
+    public void keyTyped( char c, int k )
+    {
+        onKeyTyped( c, k );
+    }
 }

src/main/java/dan200/computercraft/client/gui/widgets/WidgetTerminal.java

@@ -1,12 +1,12 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
 package dan200.computercraft.client.gui.widgets;
 
-import dan200.computercraft.ComputerCraft;
+import dan200.computercraft.client.FrameInfo;
 import dan200.computercraft.client.gui.FixedWidthFontRenderer;
 import dan200.computercraft.core.terminal.Terminal;
 import dan200.computercraft.core.terminal.TextBuffer;
@@ -18,15 +18,15 @@ import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.GuiScreen;
 import net.minecraft.client.renderer.GlStateManager;
 import net.minecraft.util.ChatAllowedCharacters;
-import net.minecraft.util.ResourceLocation;
 import org.lwjgl.input.Keyboard;
 import org.lwjgl.input.Mouse;
 
 import java.util.ArrayList;
 
+import static dan200.computercraft.client.gui.FixedWidthFontRenderer.BACKGROUND;
+
 public class WidgetTerminal extends Widget
 {
-    private static final ResourceLocation background = new ResourceLocation( "computercraft", "textures/gui/term_background.png" );
     private static final float TERMINATE_TIME = 0.5f;
 
     private final IComputerContainer m_computer;
@@ -84,7 +84,7 @@ public class WidgetTerminal extends Widget
     }
 
     @Override
-    public boolean keyTyped( char ch, int key )
+    public boolean onKeyTyped( char ch, int key )
     {
         if( m_focus )
         {
@@ -122,8 +122,8 @@ public class WidgetTerminal extends Widget
                         }
 
                         // Queue the "paste" event
-                        queueEvent( "paste", new Object[]{
-                                clipboard
+                        queueEvent( "paste", new Object[] {
+                            clipboard
                         } );
                     }
                 }
@@ -143,7 +143,7 @@ public class WidgetTerminal extends Widget
                     }
 
                     // Queue the "key" event
-                    queueEvent( "key", new Object[]{
+                    queueEvent( "key", new Object[] {
                         key, repeat
                     } );
                     handled = true;
@@ -152,7 +152,7 @@ public class WidgetTerminal extends Widget
                 if( (ch >= 32 && ch <= 126) || (ch >= 160 && ch <= 255) ) // printable chars in byte range
                 {
                     // Queue the "char" event
-                    queueEvent( "char", new Object[]{
+                    queueEvent( "char", new Object[] {
                         Character.toString( ch )
                     } );
                     handled = true;
@@ -161,7 +161,7 @@ public class WidgetTerminal extends Widget
                 return handled;
             }
         }
-        
+
         return false;
     }
 
@@ -171,7 +171,7 @@ public class WidgetTerminal extends Widget
         if( mouseX >= getXPosition() && mouseX < getXPosition() + getWidth() &&
             mouseY >= getYPosition() && mouseY < getYPosition() + getHeight() )
         {
-            if( !m_focus && button == 0)
+            if( !m_focus && button == 0 )
             {
                 m_focus = true;
             }
@@ -184,12 +184,12 @@ public class WidgetTerminal extends Widget
                     Terminal term = computer.getTerminal();
                     if( term != null )
                     {
-                        int charX = ( mouseX - ( getXPosition() + m_leftMargin ) ) / FixedWidthFontRenderer.FONT_WIDTH;
-                        int charY = ( mouseY - ( getYPosition() + m_topMargin ) ) / FixedWidthFontRenderer.FONT_HEIGHT;
+                        int charX = (mouseX - (getXPosition() + m_leftMargin)) / FixedWidthFontRenderer.FONT_WIDTH;
+                        int charY = (mouseY - (getYPosition() + m_topMargin)) / FixedWidthFontRenderer.FONT_HEIGHT;
                         charX = Math.min( Math.max( charX, 0 ), term.getWidth() - 1 );
                         charY = Math.min( Math.max( charY, 0 ), term.getHeight() - 1 );
 
-                        computer.queueEvent( "mouse_click", new Object[]{
+                        computer.queueEvent( "mouse_click", new Object[] {
                             button + 1, charX + 1, charY + 1
                         } );
 
@@ -210,7 +210,7 @@ public class WidgetTerminal extends Widget
     }
 
     @Override
-    public boolean handleKeyboardInput()
+    public boolean onKeyboardInput()
     {
         boolean handled = false;
         for( int i = m_keysDown.size() - 1; i >= 0; --i )
@@ -222,7 +222,7 @@ public class WidgetTerminal extends Widget
                 if( m_focus )
                 {
                     // Queue the "key_up" event
-                    queueEvent( "key_up", new Object[]{
+                    queueEvent( "key_up", new Object[] {
                         key
                     } );
                     handled = true;
@@ -244,8 +244,8 @@ public class WidgetTerminal extends Widget
             Terminal term = computer.getTerminal();
             if( term != null )
             {
-                int charX = ( mouseX - (getXPosition() + m_leftMargin)) / FixedWidthFontRenderer.FONT_WIDTH;
-                int charY = ( mouseY - (getYPosition() + m_topMargin)) / FixedWidthFontRenderer.FONT_HEIGHT;
+                int charX = (mouseX - (getXPosition() + m_leftMargin)) / FixedWidthFontRenderer.FONT_WIDTH;
+                int charY = (mouseY - (getYPosition() + m_topMargin)) / FixedWidthFontRenderer.FONT_HEIGHT;
                 charX = Math.min( Math.max( charX, 0 ), term.getWidth() - 1 );
                 charY = Math.min( Math.max( charY, 0 ), term.getHeight() - 1 );
 
@@ -253,7 +253,7 @@ public class WidgetTerminal extends Widget
                 {
                     if( m_focus )
                     {
-                        computer.queueEvent( "mouse_up", new Object[]{
+                        computer.queueEvent( "mouse_up", new Object[] {
                             m_lastClickButton + 1, charX + 1, charY + 1
                         } );
                     }
@@ -270,20 +270,20 @@ public class WidgetTerminal extends Widget
                 {
                     if( wheelChange < 0 )
                     {
-                        computer.queueEvent( "mouse_scroll", new Object[]{
-                                1, charX + 1, charY + 1
+                        computer.queueEvent( "mouse_scroll", new Object[] {
+                            1, charX + 1, charY + 1
                         } );
                     }
                     else if( wheelChange > 0 )
                     {
-                        computer.queueEvent( "mouse_scroll", new Object[]{
-                                -1, charX + 1, charY + 1
+                        computer.queueEvent( "mouse_scroll", new Object[] {
+                            -1, charX + 1, charY + 1
                         } );
                     }
 
-                    if( m_lastClickButton >= 0 && ( charX != m_lastClickX || charY != m_lastClickY ) )
+                    if( m_lastClickButton >= 0 && (charX != m_lastClickX || charY != m_lastClickY) )
                     {
-                        computer.queueEvent( "mouse_drag", new Object[]{
+                        computer.queueEvent( "mouse_drag", new Object[] {
                             m_lastClickButton + 1, charX + 1, charY + 1
                         } );
                         m_lastClickX = charX;
@@ -296,10 +296,10 @@ public class WidgetTerminal extends Widget
 
     @Override
     public void update()
-    {                
+    {
         // Handle special keys
         if( m_focus && (Keyboard.isKeyDown( 29 ) || Keyboard.isKeyDown( 157 )) )
-        {            
+        {
             // Ctrl+T for terminate
             if( Keyboard.isKeyDown( 20 ) )
             {
@@ -316,9 +316,9 @@ public class WidgetTerminal extends Widget
             {
                 m_terminateTimer = 0.0f;
             }
-            
+
             // Ctrl+R for reboot
-            if( Keyboard.isKeyDown(19) )
+            if( Keyboard.isKeyDown( 19 ) )
             {
                 if( m_rebootTimer < TERMINATE_TIME )
                 {
@@ -339,7 +339,7 @@ public class WidgetTerminal extends Widget
             }
 
             // Ctrl+S for shutdown
-            if( Keyboard.isKeyDown(31) )
+            if( Keyboard.isKeyDown( 31 ) )
             {
                 if( m_shutdownTimer < TERMINATE_TIME )
                 {
@@ -377,7 +377,7 @@ public class WidgetTerminal extends Widget
         {
             // Draw the screen contents
             IComputer computer = m_computer.getComputer();
-            Terminal terminal = ( computer != null ) ? computer.getTerminal() : null;
+            Terminal terminal = (computer != null) ? computer.getTerminal() : null;
             if( terminal != null )
             {
                 // Draw the terminal
@@ -387,8 +387,8 @@ public class WidgetTerminal extends Widget
 
                 // Get the data from the terminal first
                 // Unfortunately we have to keep the lock for the whole of drawing, so the text doesn't change under us.
-                FixedWidthFontRenderer fontRenderer = (FixedWidthFontRenderer) ComputerCraft.getFixedWidthFontRenderer();
-                boolean tblink = m_focus && terminal.getCursorBlink() && ComputerCraft.getGlobalCursorBlink();
+                FixedWidthFontRenderer fontRenderer = FixedWidthFontRenderer.instance();
+                boolean tblink = m_focus && terminal.getCursorBlink() && FrameInfo.instance().getGlobalCursorBlink();
                 int tw = terminal.getWidth();
                 int th = terminal.getHeight();
                 int tx = terminal.getCursorX();
@@ -405,11 +405,11 @@ public class WidgetTerminal extends Widget
                 }
                 if( m_bottomMargin > 0 )
                 {
-                    fontRenderer.drawString( emptyLine, x, startY + 2 * m_bottomMargin + ( th - 1 ) * FixedWidthFontRenderer.FONT_HEIGHT, terminal.getTextColourLine( th - 1 ), terminal.getBackgroundColourLine( th - 1 ), m_leftMargin, m_rightMargin, greyscale, palette );
+                    fontRenderer.drawString( emptyLine, x, startY + 2 * m_bottomMargin + (th - 1) * FixedWidthFontRenderer.FONT_HEIGHT, terminal.getTextColourLine( th - 1 ), terminal.getBackgroundColourLine( th - 1 ), m_leftMargin, m_rightMargin, greyscale, palette );
                 }
 
                 // Draw lines
-                for( int line = 0; line < th; ++line )
+                for( int line = 0; line < th; line++ )
                 {
                     TextBuffer text = terminal.getLine( line );
                     TextBuffer colour = terminal.getTextColourLine( line );
@@ -424,25 +424,27 @@ public class WidgetTerminal extends Widget
                     TextBuffer cursorColour = new TextBuffer( "0123456789abcdef".charAt( terminal.getTextColour() ), 1 );
 
                     fontRenderer.drawString(
-                            cursor,
-                            x + FixedWidthFontRenderer.FONT_WIDTH * tx,
-                            startY + m_topMargin + FixedWidthFontRenderer.FONT_HEIGHT * ty,
-                            cursorColour, null,
-                            0, 0,
-                            greyscale,
-                            palette
+                        cursor,
+                        x + FixedWidthFontRenderer.FONT_WIDTH * tx,
+                        startY + m_topMargin + FixedWidthFontRenderer.FONT_HEIGHT * ty,
+                        cursorColour, null,
+                        0, 0,
+                        greyscale,
+                        palette
                     );
                 }
-            } else
+            }
+            else
             {
                 // Draw a black background
-                mc.getTextureManager().bindTexture( background );
+                mc.getTextureManager().bindTexture( BACKGROUND );
                 Colour black = Colour.Black;
                 GlStateManager.color( black.getR(), black.getG(), black.getB(), 1.0f );
                 try
                 {
                     drawTexturedModalRect( startX, startY, 0, 0, getWidth(), getHeight() );
-                } finally
+                }
+                finally
                 {
                     GlStateManager.color( 1.0f, 1.0f, 1.0f, 1.0f );
                 }

src/main/java/dan200/computercraft/client/proxy/CCTurtleProxyClient.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
@@ -11,7 +11,6 @@ import dan200.computercraft.client.render.TileEntityTurtleRenderer;
 import dan200.computercraft.client.render.TurtleSmartItemModel;
 import dan200.computercraft.shared.proxy.CCTurtleProxyCommon;
 import dan200.computercraft.shared.turtle.blocks.TileTurtle;
-import dan200.computercraft.shared.turtle.core.TurtleBrain;
 import dan200.computercraft.shared.turtle.items.ItemTurtleBase;
 import net.minecraft.block.Block;
 import net.minecraft.client.Minecraft;
@@ -36,17 +35,16 @@ import net.minecraftforge.client.model.ModelLoaderRegistry;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.client.registry.ClientRegistry;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
-import net.minecraftforge.fml.common.gameevent.TickEvent;
 
 import javax.annotation.Nonnull;
 
 public class CCTurtleProxyClient extends CCTurtleProxyCommon
 {
     // IComputerCraftProxy implementation
-    
-    @Override        
+
+    @Override
     public void preInit()
-    {    
+    {
         super.preInit();
 
         // Setup client forge handlers
@@ -102,7 +100,7 @@ public class CCTurtleProxyClient extends CCTurtleProxyCommon
     private void registerItemModel( Item item, ItemMeshDefinition definition, String[] names )
     {
         ResourceLocation[] resources = new ResourceLocation[names.length];
-        for( int i=0; i<names.length; ++i )
+        for( int i = 0; i < names.length; i++ )
         {
             resources[i] = new ResourceLocation( "computercraft:" + names[i] );
         }
@@ -141,20 +139,11 @@ public class CCTurtleProxyClient extends CCTurtleProxyCommon
             IResourceManager resourceManager = Minecraft.getMinecraft().getResourceManager();
             if( resourceManager instanceof SimpleReloadableResourceManager )
             {
-                SimpleReloadableResourceManager reloadableResourceManager = (SimpleReloadableResourceManager)resourceManager;
+                SimpleReloadableResourceManager reloadableResourceManager = (SimpleReloadableResourceManager) resourceManager;
                 reloadableResourceManager.registerReloadListener( m_turtleSmartItemModel );
             }
         }
 
-        @SubscribeEvent
-        public void onTick( TickEvent.ClientTickEvent event )
-        {
-            if( event.phase == TickEvent.Phase.END )
-            {
-                TurtleBrain.cleanupBrains();
-            }
-        }
-
         @SubscribeEvent
         public void onTextureStitchEvent( TextureStitchEvent.Pre event )
         {

src/main/java/dan200/computercraft/client/proxy/ComputerCraftProxyClient.java

@@ -1,92 +1,54 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
 package dan200.computercraft.client.proxy;
 
 import dan200.computercraft.ComputerCraft;
-import dan200.computercraft.client.gui.*;
+import dan200.computercraft.client.ClientTableFormatter;
+import dan200.computercraft.client.FrameInfo;
 import dan200.computercraft.client.render.*;
 import dan200.computercraft.shared.command.CommandCopy;
-import dan200.computercraft.shared.command.ContainerViewComputer;
-import dan200.computercraft.shared.computer.blocks.ComputerState;
-import dan200.computercraft.shared.computer.blocks.TileComputer;
-import dan200.computercraft.shared.computer.core.ClientComputer;
-import dan200.computercraft.shared.computer.core.ComputerFamily;
-import dan200.computercraft.shared.computer.core.IComputer;
-import dan200.computercraft.shared.computer.items.ItemComputer;
-import dan200.computercraft.shared.media.inventory.ContainerHeldItem;
+import dan200.computercraft.shared.command.text.TableBuilder;
 import dan200.computercraft.shared.media.items.ItemDiskLegacy;
-import dan200.computercraft.shared.media.items.ItemPrintout;
-import dan200.computercraft.shared.network.ComputerCraftPacket;
-import dan200.computercraft.shared.peripheral.diskdrive.TileDiskDrive;
-import dan200.computercraft.shared.peripheral.modem.TileCable;
+import dan200.computercraft.shared.peripheral.modem.wired.TileCable;
 import dan200.computercraft.shared.peripheral.monitor.ClientMonitor;
 import dan200.computercraft.shared.peripheral.monitor.TileMonitor;
-import dan200.computercraft.shared.peripheral.printer.TilePrinter;
-import dan200.computercraft.shared.pocket.inventory.ContainerPocketComputer;
-import dan200.computercraft.shared.pocket.items.ItemPocketComputer;
 import dan200.computercraft.shared.proxy.ComputerCraftProxyCommon;
-import dan200.computercraft.shared.turtle.blocks.TileTurtle;
-import dan200.computercraft.shared.turtle.entity.TurtleVisionCamera;
 import dan200.computercraft.shared.util.Colour;
-import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
 import net.minecraft.block.Block;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.gui.GuiNewChat;
 import net.minecraft.client.renderer.ItemMeshDefinition;
 import net.minecraft.client.renderer.block.model.ModelBakery;
 import net.minecraft.client.renderer.block.model.ModelResourceLocation;
 import net.minecraft.client.renderer.color.IItemColor;
-import net.minecraft.client.util.ITooltipFlag;
-import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.entity.player.InventoryPlayer;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
-import net.minecraft.util.EnumHand;
-import net.minecraft.util.IThreadListener;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.SoundEvent;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.text.ITextComponent;
 import net.minecraft.world.World;
 import net.minecraftforge.client.ClientCommandHandler;
 import net.minecraftforge.client.event.ModelRegistryEvent;
-import net.minecraftforge.client.event.RenderGameOverlayEvent;
-import net.minecraftforge.client.event.RenderHandEvent;
-import net.minecraftforge.client.event.RenderPlayerEvent;
 import net.minecraftforge.client.model.ModelLoader;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.event.world.WorldEvent;
 import net.minecraftforge.fml.client.registry.ClientRegistry;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
-import net.minecraftforge.fml.common.gameevent.TickEvent;
 import net.minecraftforge.fml.relauncher.Side;
 import net.minecraftforge.fml.relauncher.SideOnly;
 
 import javax.annotation.Nonnull;
 import java.io.File;
-import java.util.ArrayList;
-import java.util.List;
 
 public class ComputerCraftProxyClient extends ComputerCraftProxyCommon
 {
-    private static Int2IntOpenHashMap lastCounts = new Int2IntOpenHashMap();
-
-    private long m_tick;
-    private long m_renderFrame;
-    private FixedWidthFontRenderer m_fixedWidthFontRenderer;
-
-    // IComputerCraftProxy implementation
-
     @Override
     public void preInit()
     {
         super.preInit();
-        m_tick = 0;
-        m_renderFrame = 0;
 
         // Setup client forge handlers
         registerForgeHandlers();
@@ -99,20 +61,7 @@ public class ComputerCraftProxyClient extends ComputerCraftProxyCommon
     public void registerModels( ModelRegistryEvent event )
     {
         // Register item models
-        registerItemModel( ComputerCraft.Blocks.computer, new ItemMeshDefinition()
-        {
-            private ModelResourceLocation computer = new ModelResourceLocation( "computercraft:computer", "inventory" );
-            private ModelResourceLocation advanced_computer = new ModelResourceLocation( "computercraft:advanced_computer", "inventory" );
-
-            @Nonnull
-            @Override
-            public ModelResourceLocation getModelLocation( @Nonnull ItemStack stack )
-            {
-                ItemComputer itemComputer = (ItemComputer) stack.getItem();
-                ComputerFamily family = itemComputer.getFamily( stack.getItemDamage() );
-                return ( family == ComputerFamily.Advanced ) ? advanced_computer : computer;
-            }
-        }, new String[]{ "computer", "advanced_computer" } );
+        registerItemModel( ComputerCraft.Blocks.computer, "computer" );
         registerItemModel( ComputerCraft.Blocks.peripheral, 0, "peripheral" );
         registerItemModel( ComputerCraft.Blocks.peripheral, 1, "wireless_modem" );
         registerItemModel( ComputerCraft.Blocks.peripheral, 2, "monitor" );
@@ -131,72 +80,7 @@ public class ComputerCraftProxyClient extends ComputerCraftProxyCommon
         registerItemModel( ComputerCraft.Items.printout, 0, "printout" );
         registerItemModel( ComputerCraft.Items.printout, 1, "pages" );
         registerItemModel( ComputerCraft.Items.printout, 2, "book" );
-        registerItemModel( ComputerCraft.Items.pocketComputer, new ItemMeshDefinition()
-        {
-            private ModelResourceLocation pocket_computer_off = new ModelResourceLocation( "computercraft:pocket_computer", "inventory" );
-            private ModelResourceLocation pocket_computer_on = new ModelResourceLocation( "computercraft:pocket_computer_on", "inventory" );
-            private ModelResourceLocation pocket_computer_blinking = new ModelResourceLocation( "computercraft:pocket_computer_blinking", "inventory" );
-            private ModelResourceLocation advanced_pocket_computer_off = new ModelResourceLocation( "computercraft:advanced_pocket_computer", "inventory" );
-            private ModelResourceLocation advanced_pocket_computer_on = new ModelResourceLocation( "computercraft:advanced_pocket_computer_on", "inventory" );
-            private ModelResourceLocation advanced_pocket_computer_blinking = new ModelResourceLocation( "computercraft:advanced_pocket_computer_blinking", "inventory" );
-            private ModelResourceLocation colour_pocket_computer_off = new ModelResourceLocation( "computercraft:pocket_computer_colour", "inventory" );
-            private ModelResourceLocation colour_pocket_computer_on = new ModelResourceLocation( "computercraft:pocket_computer_colour_on", "inventory" );
-            private ModelResourceLocation colour_pocket_computer_blinking = new ModelResourceLocation( "computercraft:pocket_computer_colour_blinking", "inventory" );
-
-            @Nonnull
-            @Override
-            public ModelResourceLocation getModelLocation( @Nonnull ItemStack stack )
-            {
-                ItemPocketComputer itemPocketComputer = (ItemPocketComputer) stack.getItem();
-                ComputerState state = itemPocketComputer.getState( stack );
-                if( itemPocketComputer.getColour( stack ) == -1 )
-                {
-                    switch( itemPocketComputer.getFamily( stack ) )
-                    {
-                        case Advanced:
-                            switch( state )
-                            {
-                                case Off:
-                                default:
-                                    return advanced_pocket_computer_off;
-                                case On:
-                                    return advanced_pocket_computer_on;
-                                case Blinking:
-                                    return advanced_pocket_computer_blinking;
-                            }
-                        case Normal:
-                        default:
-                            switch( state )
-                            {
-                                case Off:
-                                default:
-                                    return pocket_computer_off;
-                                case On:
-                                    return pocket_computer_on;
-                                case Blinking:
-                                    return pocket_computer_blinking;
-                            }
-                    }
-                }
-                else
-                {
-                    switch( state )
-                    {
-                        case Off:
-                        default:
-                            return colour_pocket_computer_off;
-                        case On:
-                            return colour_pocket_computer_on;
-                        case Blinking:
-                            return colour_pocket_computer_blinking;
-                    }
-                }
-            }
-        }, new String[] {
-            "pocket_computer", "pocket_computer_on", "pocket_computer_blinking",
-            "advanced_pocket_computer", "advanced_pocket_computer_on", "advanced_pocket_computer_blinking",
-            "pocket_computer_colour", "pocket_computer_colour_on", "pocket_computer_colour_blinking",
-        } );
+        registerItemModel( ComputerCraft.Items.pocketComputer, "pocket_computer" );
     }
 
     @Override
@@ -206,7 +90,6 @@ public class ComputerCraftProxyClient extends ComputerCraftProxyCommon
 
         // Load textures
         Minecraft mc = Minecraft.getMinecraft();
-        m_fixedWidthFontRenderer = new FixedWidthFontRenderer( mc.getTextureManager() );
 
         // Setup
         mc.getItemColors().registerItemColorHandler( new DiskColorHandler( ComputerCraft.Items.disk ), ComputerCraft.Items.disk );
@@ -271,322 +154,37 @@ public class ComputerCraftProxyClient extends ComputerCraftProxyCommon
         } );
     }
 
-    private void registerItemModel( Block block, ItemMeshDefinition definition, String[] names )
-    {
-        registerItemModel( Item.getItemFromBlock( block ), definition, names );
-    }
-
-    private void registerItemModel( Item item, ItemMeshDefinition definition, String[] names )
-    {
-        ResourceLocation[] resources = new ResourceLocation[names.length];
-        for( int i=0; i<resources.length; ++i )
-        {
-            resources[i] = new ResourceLocation( "computercraft", names[i] );
-        }
-        ModelBakery.registerItemVariants( item, resources );
-        ModelLoader.setCustomMeshDefinition( item, definition );
-    }
-
-    @Override
-    public boolean isClient()
-    {
-        return true;
-    }
-
-    @Override
-    public boolean getGlobalCursorBlink()
-    {
-        return ( m_tick / 8) % 2 == 0;
-    }
-
-    @Override
-    public long getRenderFrame()
-    {
-        return m_renderFrame;
-    }
-
-    @Override
-    public Object getFixedWidthFontRenderer()
-    {
-        return m_fixedWidthFontRenderer;
-    }
-
-    @Override
-    public String getRecordInfo( @Nonnull ItemStack recordStack )
-    {
-        List<String> info = new ArrayList<>( 1 );
-        recordStack.getItem().addInformation( recordStack, null, info, ITooltipFlag.TooltipFlags.NORMAL );
-        if( info.size() > 0 ) {
-            return info.get( 0 );
-        } else {
-            return super.getRecordInfo( recordStack );
-        }
-    }
-
-    @Override
-    public Object getDiskDriveGUI( InventoryPlayer inventory, TileDiskDrive drive )
-    {
-        return new GuiDiskDrive( inventory, drive );
-    }
-
-    @Override
-    public Object getComputerGUI( TileComputer computer )
-    {
-        return new GuiComputer( computer );
-    }
-
-    @Override
-    public Object getPrinterGUI( InventoryPlayer inventory, TilePrinter printer )
-    {
-        return new GuiPrinter( inventory, printer );
-    }
-
-    @Override
-    public Object getTurtleGUI( InventoryPlayer inventory, TileTurtle turtle )
-    {
-        return new GuiTurtle( turtle.getWorld(), inventory, turtle );
-    }
-
-    @Override
-    public Object getPrintoutGUI( EntityPlayer player, EnumHand hand )
-    {
-        ContainerHeldItem container = new ContainerHeldItem( player, hand );
-        if( container.getStack().getItem() instanceof ItemPrintout )
-        {
-            return new GuiPrintout( container );
-        }
-        return null;
-    }
-
-    @Override
-    public Object getPocketComputerGUI( EntityPlayer player, EnumHand hand )
-    {
-        ContainerPocketComputer container = new ContainerPocketComputer( player, hand );
-        if( container.getStack().getItem() instanceof ItemPocketComputer )
-        {
-            return new GuiPocketComputer( container );
-        }
-        return null;
-    }
-
-    @Override
-    public Object getComputerGUI( IComputer computer, int width, int height, ComputerFamily family )
-    {
-        ContainerViewComputer container = new ContainerViewComputer( computer );
-        return new GuiComputer( container, family, computer, width, height );
-    }
-
     @Override
     public File getWorldDir( World world )
     {
         return world.getSaveHandler().getWorldDirectory();
     }
 
-    @Override
-    public void handlePacket( final ComputerCraftPacket packet, final EntityPlayer player )
-    {
-        switch( packet.m_packetType )
-        {
-            case ComputerCraftPacket.ComputerChanged:
-            case ComputerCraftPacket.ComputerTerminalChanged:
-            case ComputerCraftPacket.ComputerDeleted:
-            case ComputerCraftPacket.PlayRecord:
-            case ComputerCraftPacket.PostChat:
-            {
-                // Packet from Server to Client
-                IThreadListener listener = Minecraft.getMinecraft();
-                if( listener != null )
-                {
-                    if( listener.isCallingFromMinecraftThread() )
-                    {
-                        processPacket( packet, player );
-                    }
-                    else
-                    {
-                        listener.addScheduledTask( () -> processPacket( packet, player ) );
-                    }
-                }
-                break;
-            }
-            default:
-            {
-                // Packet from Client to Server
-                super.handlePacket( packet, player );
-                break;
-            }
-        }
-    }
-
-    private void processPacket( ComputerCraftPacket packet, EntityPlayer player )
-    {
-        switch( packet.m_packetType )
-        {
-            ///////////////////////////////////
-            // Packets from Server to Client //
-            ///////////////////////////////////
-            case ComputerCraftPacket.ComputerChanged:
-            case ComputerCraftPacket.ComputerTerminalChanged:
-            {
-                int instanceID = packet.m_dataInt[ 0 ];
-                if( !ComputerCraft.clientComputerRegistry.contains( instanceID ) )
-                {
-                    ComputerCraft.clientComputerRegistry.add( instanceID, new ClientComputer( instanceID ) );
-                }
-                ComputerCraft.clientComputerRegistry.get( instanceID ).handlePacket( packet, player );
-                break;
-            }
-            case ComputerCraftPacket.ComputerDeleted:
-            {
-                int instanceID = packet.m_dataInt[ 0 ];
-                if( ComputerCraft.clientComputerRegistry.contains( instanceID ) )
-                {
-                    ComputerCraft.clientComputerRegistry.remove( instanceID );
-                }
-                break;
-            }
-            case ComputerCraftPacket.PlayRecord:
-            {
-                BlockPos pos = new BlockPos( packet.m_dataInt[ 0 ], packet.m_dataInt[ 1 ], packet.m_dataInt[ 2 ] );
-                Minecraft mc = Minecraft.getMinecraft();
-                if( packet.m_dataInt.length > 3 )
-                {
-                    SoundEvent sound = SoundEvent.REGISTRY.getObjectById( packet.m_dataInt[ 3 ] );
-                    mc.world.playRecord( pos, sound );
-                    mc.ingameGUI.setRecordPlayingMessage( packet.m_dataString[ 0 ] );
-                }
-                else
-                {
-                    mc.world.playRecord( pos, null );
-                }
-                break;
-            }
-            case ComputerCraftPacket.PostChat:
-            {
-                /*
-                  This allows us to send delete chat messages of the same "category" as the previous one.
-                  It's used by the various /computercraft commands to avoid filling the chat with repetitive
-                  messages.
-                 */
-
-                int id = packet.m_dataInt[0];
-                ITextComponent[] components = new ITextComponent[packet.m_dataString.length];
-                for( int i = 0; i < packet.m_dataString.length; i++ )
-                {
-                    components[i] = ITextComponent.Serializer.jsonToComponent( packet.m_dataString[i] );
-                }
-
-                GuiNewChat chat = Minecraft.getMinecraft().ingameGUI.getChatGUI();
-
-                // Keep track of how many lines we wrote last time, deleting any extra ones.
-                int lastCount = lastCounts.get( id );
-                for( int i = components.length; i < lastCount; i++ ) chat.deleteChatLine( i + id );
-                lastCounts.put( id, components.length );
-
-                // Add new lines
-                for( int i = 0; i < components.length; i++ )
-                {
-                    chat.printChatMessageWithOptionalDeletion( components[i], id + i );
-                }
-                break;
-            }
-
-        }
-    }
-
     private void registerForgeHandlers()
     {
-        ForgeHandlers handlers = new ForgeHandlers();
-        MinecraftForge.EVENT_BUS.register( handlers );
+        MinecraftForge.EVENT_BUS.register( new ForgeHandlers() );
         MinecraftForge.EVENT_BUS.register( new RenderOverlayCable() );
         MinecraftForge.EVENT_BUS.register( new ItemPocketRenderer() );
         MinecraftForge.EVENT_BUS.register( new ItemPrintoutRenderer() );
+        MinecraftForge.EVENT_BUS.register( FrameInfo.instance() );
+    }
+
+    @Override
+    public void playRecordClient( BlockPos pos, SoundEvent record, String info )
+    {
+        Minecraft mc = Minecraft.getMinecraft();
+        mc.world.playRecord( pos, record );
+        if( info != null ) mc.ingameGUI.setRecordPlayingMessage( info );
+    }
+
+    @Override
+    public void showTableClient( TableBuilder table )
+    {
+        ClientTableFormatter.INSTANCE.display( table );
     }
 
     public class ForgeHandlers
     {
-        public ForgeHandlers()
-        {
-        }
-
-        @SubscribeEvent
-        public void onRenderHand( RenderHandEvent event )
-        {
-            // Don't draw the player arm when in turtle vision
-            Minecraft mc = Minecraft.getMinecraft();
-            if( mc.getRenderViewEntity() instanceof TurtleVisionCamera )
-            {
-                event.setCanceled( true );
-            }
-        }
-
-        @SubscribeEvent
-        public void onRenderPlayer( RenderPlayerEvent.Pre event )
-        {
-            Minecraft mc = Minecraft.getMinecraft();
-            if( event.getEntityPlayer().isUser() && mc.getRenderViewEntity() instanceof TurtleVisionCamera )
-            {
-                // HACK: Force the 'livingPlayer' variable to the player, this ensures the entity is drawn
-                //event.getRenderer().getRenderManager().livingPlayer = event.getEntityPlayer();
-            }
-        }
-
-        @SubscribeEvent
-        public void onRenderPlayer( RenderPlayerEvent.Post event )
-        {
-            Minecraft mc = Minecraft.getMinecraft();
-            if( event.getEntityPlayer().isUser() && mc.getRenderViewEntity() instanceof TurtleVisionCamera )
-            {
-                // HACK: Restore the 'livingPlayer' variable to what it was before the RenderPlayerEvent.Pre hack
-                //event.getRenderer().getRenderManager().livingPlayer = mc.getRenderViewEntity();
-            }
-        }
-
-        @SubscribeEvent
-        public void onPreRenderGameOverlay( RenderGameOverlayEvent.Pre event )
-        {
-            Minecraft mc = Minecraft.getMinecraft();
-            if( mc.getRenderViewEntity() instanceof TurtleVisionCamera )
-            {
-                switch( event.getType() )
-                {
-                    case HELMET:
-                    case PORTAL:
-                    //case CROSSHAIRS:
-                    case BOSSHEALTH:
-                    case ARMOR:
-                    case HEALTH:
-                    case FOOD:
-                    case AIR:
-                    case HOTBAR:
-                    case EXPERIENCE:
-                    case HEALTHMOUNT:
-                    case JUMPBAR:
-                    {
-                        event.setCanceled( true );
-                        break;
-                    }
-                }
-            }
-        }
-
-        @SubscribeEvent
-        public void onTick( TickEvent.ClientTickEvent event )
-        {
-            if( event.phase == TickEvent.Phase.START )
-            {
-                m_tick++;
-            }
-        }
-
-        @SubscribeEvent
-        public void onRenderTick( TickEvent.RenderTickEvent event )
-        {
-            if( event.phase == TickEvent.Phase.START )
-            {
-                m_renderFrame++;
-            }
-        }
-
         @SubscribeEvent
         public void onWorldUnload( WorldEvent.Unload event )
         {
@@ -597,7 +195,7 @@ public class ComputerCraftProxyClient extends ComputerCraftProxyCommon
         }
     }
 
-    @SideOnly(Side.CLIENT)
+    @SideOnly( Side.CLIENT )
     private static class DiskColorHandler implements IItemColor
     {
         private final ItemDiskLegacy disk;

src/main/java/dan200/computercraft/client/render/ItemMapLikeRenderer.java

@@ -0,0 +1,118 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
+package dan200.computercraft.client.render;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.GlStateManager;
+import net.minecraft.client.renderer.ItemRenderer;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.EnumHand;
+import net.minecraft.util.EnumHandSide;
+import net.minecraft.util.math.MathHelper;
+
+public abstract class ItemMapLikeRenderer
+{
+    /**
+     * The main rendering method for the item
+     *
+     * @param stack The stack to render
+     * @see ItemRenderer#renderMapFirstPerson(ItemStack)
+     */
+    protected abstract void renderItem( ItemStack stack );
+
+    protected void renderItemFirstPerson( EnumHand hand, float pitch, float equipProgress, float swingProgress, ItemStack stack )
+    {
+        EntityPlayer player = Minecraft.getMinecraft().player;
+
+        GlStateManager.pushMatrix();
+        if( hand == EnumHand.MAIN_HAND && player.getHeldItemOffhand().isEmpty() )
+        {
+            renderItemFirstPersonCenter( pitch, equipProgress, swingProgress, stack );
+        }
+        else
+        {
+            renderItemFirstPersonSide(
+                hand == EnumHand.MAIN_HAND ? player.getPrimaryHand() : player.getPrimaryHand().opposite(),
+                equipProgress, swingProgress, stack
+            );
+        }
+        GlStateManager.popMatrix();
+    }
+
+    /**
+     * Renders the item to one side of the player.
+     *
+     * @param side          The side to render on
+     * @param equipProgress The equip progress of this item
+     * @param swingProgress The swing progress of this item
+     * @param stack         The stack to render
+     * @see ItemRenderer#renderMapFirstPersonSide(float, EnumHandSide, float, ItemStack)
+     */
+    private void renderItemFirstPersonSide( EnumHandSide side, float equipProgress, float swingProgress, ItemStack stack )
+    {
+        Minecraft minecraft = Minecraft.getMinecraft();
+        float offset = side == EnumHandSide.RIGHT ? 1f : -1f;
+        GlStateManager.translate( offset * 0.125f, -0.125f, 0f );
+
+        // If the player is not invisible then render a single arm
+        if( !minecraft.player.isInvisible() )
+        {
+            GlStateManager.pushMatrix();
+            GlStateManager.rotate( offset * 10f, 0f, 0f, 1f );
+            minecraft.getItemRenderer().renderArmFirstPerson( equipProgress, swingProgress, side );
+            GlStateManager.popMatrix();
+        }
+
+        // Setup the appropriate transformations. This is just copied from the
+        // corresponding method in ItemRenderer.
+        GlStateManager.pushMatrix();
+        GlStateManager.translate( offset * 0.51f, -0.08f + equipProgress * -1.2f, -0.75f );
+        float f1 = MathHelper.sqrt( swingProgress );
+        float f2 = MathHelper.sin( f1 * (float) Math.PI );
+        float f3 = -0.5f * f2;
+        float f4 = 0.4f * MathHelper.sin( f1 * ((float) Math.PI * 2f) );
+        float f5 = -0.3f * MathHelper.sin( swingProgress * (float) Math.PI );
+        GlStateManager.translate( offset * f3, f4 - 0.3f * f2, f5 );
+        GlStateManager.rotate( f2 * -45f, 1f, 0f, 0f );
+        GlStateManager.rotate( offset * f2 * -30f, 0f, 1f, 0f );
+
+        renderItem( stack );
+
+        GlStateManager.popMatrix();
+    }
+
+    /**
+     * Render an item in the middle of the screen
+     *
+     * @param pitch         The pitch of the player
+     * @param equipProgress The equip progress of this item
+     * @param swingProgress The swing progress of this item
+     * @param stack         The stack to render
+     * @see ItemRenderer#renderMapFirstPerson(float, float, float)
+     */
+    private void renderItemFirstPersonCenter( float pitch, float equipProgress, float swingProgress, ItemStack stack )
+    {
+        ItemRenderer itemRenderer = Minecraft.getMinecraft().getItemRenderer();
+
+        // Setup the appropriate transformations. This is just copied from the
+        // corresponding method in ItemRenderer.
+        float swingRt = MathHelper.sqrt( swingProgress );
+        float tX = -0.2f * MathHelper.sin( swingProgress * (float) Math.PI );
+        float tZ = -0.4f * MathHelper.sin( swingRt * (float) Math.PI );
+        GlStateManager.translate( 0f, -tX / 2f, tZ );
+        float pitchAngle = itemRenderer.getMapAngleFromPitch( pitch );
+        GlStateManager.translate( 0f, 0.04f + equipProgress * -1.2f + pitchAngle * -0.5f, -0.72f );
+        GlStateManager.rotate( pitchAngle * -85f, 1f, 0f, 0f );
+        itemRenderer.renderArms();
+        float rX = MathHelper.sin( swingRt * (float) Math.PI );
+        GlStateManager.rotate( rX * 20f, 1f, 0f, 0f );
+        GlStateManager.scale( 2f, 2f, 2f );
+
+        renderItem( stack );
+    }
+}

src/main/java/dan200/computercraft/client/render/ItemPocketRenderer.java

@@ -1,7 +1,13 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.client.render;
 
-
 import dan200.computercraft.ComputerCraft;
+import dan200.computercraft.client.FrameInfo;
 import dan200.computercraft.client.gui.FixedWidthFontRenderer;
 import dan200.computercraft.core.terminal.Terminal;
 import dan200.computercraft.core.terminal.TextBuffer;
@@ -10,17 +16,12 @@ import dan200.computercraft.shared.pocket.items.ItemPocketComputer;
 import dan200.computercraft.shared.util.Palette;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.GlStateManager;
-import net.minecraft.client.renderer.ItemRenderer;
 import net.minecraft.client.renderer.RenderItem;
 import net.minecraft.client.renderer.block.model.IBakedModel;
 import net.minecraft.client.renderer.block.model.ItemCameraTransforms;
 import net.minecraft.client.renderer.texture.TextureManager;
 import net.minecraft.client.renderer.texture.TextureMap;
-import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemStack;
-import net.minecraft.util.EnumHand;
-import net.minecraft.util.EnumHandSide;
-import net.minecraft.util.math.MathHelper;
 import net.minecraftforge.client.ForgeHooksClient;
 import net.minecraftforge.client.event.RenderSpecificHandEvent;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
@@ -34,8 +35,8 @@ import static dan200.computercraft.client.gui.FixedWidthFontRenderer.FONT_WIDTH;
 /**
  * Emulates map rendering for pocket computers
  */
-@SideOnly(Side.CLIENT)
-public class ItemPocketRenderer
+@SideOnly( Side.CLIENT )
+public class ItemPocketRenderer extends ItemMapLikeRenderer
 {
     @SubscribeEvent
     public void renderItem( RenderSpecificHandEvent event )
@@ -44,38 +45,11 @@ public class ItemPocketRenderer
         if( !(stack.getItem() instanceof ItemPocketComputer) ) return;
 
         event.setCanceled( true );
-
-        EntityPlayer player = Minecraft.getMinecraft().player;
-
-        GlStateManager.pushMatrix();
-        if( event.getHand() == EnumHand.MAIN_HAND && player.getHeldItemOffhand().isEmpty() )
-        {
-            renderItemFirstCentre(
-                event.getInterpolatedPitch(),
-                event.getEquipProgress(),
-                event.getSwingProgress(),
-                stack
-            );
-        }
-        else
-        {
-            renderItemFirstPersonSide(
-                event.getHand() == EnumHand.MAIN_HAND ? player.getPrimaryHand() : player.getPrimaryHand().opposite(),
-                event.getEquipProgress(),
-                event.getSwingProgress(),
-                stack
-            );
-        }
-        GlStateManager.popMatrix();
+        renderItemFirstPerson( event.getHand(), event.getInterpolatedPitch(), event.getEquipProgress(), event.getSwingProgress(), event.getItemStack() );
     }
 
-    /**
-     * The main rendering method for pocket computers and their associated terminal
-     *
-     * @param stack The stack to render
-     * @see ItemRenderer#renderMapFirstPerson(ItemStack)
-     */
-    private void renderPocketComputerItem( ItemStack stack )
+    @Override
+    protected void renderItem( ItemStack stack )
     {
         // Setup various transformations. Note that these are partially adapated from the corresponding method
         // in ItemRenderer
@@ -89,8 +63,8 @@ public class ItemPocketRenderer
         ClientComputer computer = pocketComputer.createClientComputer( stack );
 
         {
-            // First render the background item. We use the item's model rather than a direct texture as this ensures 
-            // we display the pocket light and other such decorations. 
+            // First render the background item. We use the item's model rather than a direct texture as this ensures
+            // we display the pocket light and other such decorations.
             GlStateManager.pushMatrix();
 
             GlStateManager.scale( 1.0f, -1.0f, 1.0f );
@@ -153,12 +127,12 @@ public class ItemPocketRenderer
                     int startX = (max - width) / 2 + margin;
                     int startY = (max - height) / 2 + margin;
 
-                    FixedWidthFontRenderer fontRenderer = (FixedWidthFontRenderer) ComputerCraft.getFixedWidthFontRenderer();
+                    FixedWidthFontRenderer fontRenderer = FixedWidthFontRenderer.instance();
                     boolean greyscale = !computer.isColour();
                     Palette palette = terminal.getPalette();
 
                     // Render the actual text
-                    for( int line = 0; line < th; ++line )
+                    for( int line = 0; line < th; line++ )
                     {
                         TextBuffer text = terminal.getLine( line );
                         TextBuffer colour = terminal.getTextColourLine( line );
@@ -171,7 +145,7 @@ public class ItemPocketRenderer
 
                     // And render the cursor;
                     int tx = terminal.getCursorX(), ty = terminal.getCursorY();
-                    if( terminal.getCursorBlink() && ComputerCraft.getGlobalCursorBlink() &&
+                    if( terminal.getCursorBlink() && FrameInfo.instance().getGlobalCursorBlink() &&
                         tx >= 0 && ty >= 0 && tx < tw && ty < th )
                     {
                         TextBuffer cursorColour = new TextBuffer( "0123456789abcdef".charAt( terminal.getTextColour() ), 1 );
@@ -189,76 +163,4 @@ public class ItemPocketRenderer
 
         GlStateManager.enableLighting();
     }
-
-    /**
-     * Renders a pocket computer to one side of the player.
-     *
-     * @param side          The side to render on
-     * @param equipProgress The equip progress of this item
-     * @param swingProgress The swing progress of this item
-     * @param stack         The stack to render
-     * @see ItemRenderer#renderMapFirstPersonSide(float, EnumHandSide, float, ItemStack)
-     */
-    private void renderItemFirstPersonSide( EnumHandSide side, float equipProgress, float swingProgress, ItemStack stack )
-    {
-        Minecraft minecraft = Minecraft.getMinecraft();
-        float offset = side == EnumHandSide.RIGHT ? 1f : -1f;
-        GlStateManager.translate( offset * 0.125f, -0.125f, 0f );
-
-        // If the player is not invisible then render a single arm
-        if( !minecraft.player.isInvisible() )
-        {
-            GlStateManager.pushMatrix();
-            GlStateManager.rotate( offset * 10f, 0f, 0f, 1f );
-            minecraft.getItemRenderer().renderArmFirstPerson( equipProgress, swingProgress, side );
-            GlStateManager.popMatrix();
-        }
-
-        // Setup the appropriate transformations. This is just copied from the
-        // corresponding method in ItemRenderer. 
-        GlStateManager.pushMatrix();
-        GlStateManager.translate( offset * 0.51f, -0.08f + equipProgress * -1.2f, -0.75f );
-        float f1 = MathHelper.sqrt( swingProgress );
-        float f2 = MathHelper.sin( f1 * (float) Math.PI );
-        float f3 = -0.5f * f2;
-        float f4 = 0.4f * MathHelper.sin( f1 * ((float) Math.PI * 2f) );
-        float f5 = -0.3f * MathHelper.sin( swingProgress * (float) Math.PI );
-        GlStateManager.translate( offset * f3, f4 - 0.3f * f2, f5 );
-        GlStateManager.rotate( f2 * -45f, 1f, 0f, 0f );
-        GlStateManager.rotate( offset * f2 * -30f, 0f, 1f, 0f );
-
-        renderPocketComputerItem( stack );
-
-        GlStateManager.popMatrix();
-    }
-
-    /**
-     * Render an item in the middle of the screen
-     *
-     * @param pitch         The pitch of the player
-     * @param equipProgress The equip progress of this item
-     * @param swingProgress The swing progress of this item
-     * @param stack         The stack to render
-     * @see ItemRenderer#renderMapFirstPerson(float, float, float)
-     */
-    private void renderItemFirstCentre( float pitch, float equipProgress, float swingProgress, ItemStack stack )
-    {
-        ItemRenderer itemRenderer = Minecraft.getMinecraft().getItemRenderer();
-
-        // Setup the appropriate transformations. This is just copied from the
-        // corresponding method in ItemRenderer.
-        float swingRt = MathHelper.sqrt( swingProgress );
-        float tX = -0.2f * MathHelper.sin( swingProgress * (float) Math.PI );
-        float tZ = -0.4f * MathHelper.sin( swingRt * (float) Math.PI );
-        GlStateManager.translate( 0f, -tX / 2f, tZ );
-        float pitchAngle = itemRenderer.getMapAngleFromPitch( pitch );
-        GlStateManager.translate( 0f, 0.04f + equipProgress * -1.2f + pitchAngle * -0.5f, -0.72f );
-        GlStateManager.rotate( pitchAngle * -85f, 1f, 0f, 0f );
-        itemRenderer.renderArms();
-        float rX = MathHelper.sin( swingRt * (float) Math.PI );
-        GlStateManager.rotate( rX * 20f, 1f, 0f, 0f );
-        GlStateManager.scale( 2f, 2f, 2f );
-
-        renderPocketComputerItem( stack );
-    }
 }

src/main/java/dan200/computercraft/client/render/ItemPrintoutRenderer.java

@@ -1,15 +1,15 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.client.render;
 
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.shared.media.items.ItemPrintout;
-import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.GlStateManager;
-import net.minecraft.client.renderer.ItemRenderer;
-import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemStack;
-import net.minecraft.util.EnumHand;
-import net.minecraft.util.EnumHandSide;
-import net.minecraft.util.math.MathHelper;
 import net.minecraftforge.client.event.RenderItemInFrameEvent;
 import net.minecraftforge.client.event.RenderSpecificHandEvent;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
@@ -20,7 +20,7 @@ import static dan200.computercraft.client.render.PrintoutRenderer.*;
 import static dan200.computercraft.shared.media.items.ItemPrintout.LINES_PER_PAGE;
 import static dan200.computercraft.shared.media.items.ItemPrintout.LINE_MAX_LENGTH;
 
-public class ItemPrintoutRenderer
+public class ItemPrintoutRenderer extends ItemMapLikeRenderer
 {
     @SubscribeEvent
     public void onRenderInHand( RenderSpecificHandEvent event )
@@ -30,104 +30,11 @@ public class ItemPrintoutRenderer
 
         event.setCanceled( true );
 
-        EntityPlayer player = Minecraft.getMinecraft().player;
-
-        GlStateManager.pushMatrix();
-        if( event.getHand() == EnumHand.MAIN_HAND && player.getHeldItemOffhand().isEmpty() )
-        {
-            renderPrintoutFirstPersonCentre(
-                event.getInterpolatedPitch(),
-                event.getEquipProgress(),
-                event.getSwingProgress(),
-                stack
-            );
-        }
-        else
-        {
-            renderPrintoutFirstPersonSide(
-                event.getHand() == EnumHand.MAIN_HAND ? player.getPrimaryHand() : player.getPrimaryHand().opposite(),
-                event.getEquipProgress(),
-                event.getSwingProgress(),
-                stack
-            );
-        }
-        GlStateManager.popMatrix();
+        renderItemFirstPerson( event.getHand(), event.getInterpolatedPitch(), event.getEquipProgress(), event.getSwingProgress(), event.getItemStack() );
     }
 
-    /**
-     * Renders a pocket computer to one side of the player.
-     *
-     * @param side          The side to render on
-     * @param equipProgress The equip progress of this item
-     * @param swingProgress The swing progress of this item
-     * @param stack         The stack to render
-     * @see ItemRenderer#renderMapFirstPersonSide(float, EnumHandSide, float, ItemStack)
-     */
-    private void renderPrintoutFirstPersonSide( EnumHandSide side, float equipProgress, float swingProgress, ItemStack stack )
-    {
-        Minecraft minecraft = Minecraft.getMinecraft();
-        float offset = side == EnumHandSide.RIGHT ? 1f : -1f;
-        GlStateManager.translate( offset * 0.125f, -0.125f, 0f );
-
-        // If the player is not invisible then render a single arm
-        if( !minecraft.player.isInvisible() )
-        {
-            GlStateManager.pushMatrix();
-            GlStateManager.rotate( offset * 10f, 0f, 0f, 1f );
-            minecraft.getItemRenderer().renderArmFirstPerson( equipProgress, swingProgress, side );
-            GlStateManager.popMatrix();
-        }
-
-        // Setup the appropriate transformations. This is just copied from the
-        // corresponding method in ItemRenderer. 
-        GlStateManager.pushMatrix();
-        GlStateManager.translate( offset * 0.51f, -0.08f + equipProgress * -1.2f, -0.75f );
-        float f1 = MathHelper.sqrt( swingProgress );
-        float f2 = MathHelper.sin( f1 * (float) Math.PI );
-        float f3 = -0.5f * f2;
-        float f4 = 0.4f * MathHelper.sin( f1 * ((float) Math.PI * 2f) );
-        float f5 = -0.3f * MathHelper.sin( swingProgress * (float) Math.PI );
-        GlStateManager.translate( offset * f3, f4 - 0.3f * f2, f5 );
-        GlStateManager.rotate( f2 * -45f, 1f, 0f, 0f );
-        GlStateManager.rotate( offset * f2 * -30f, 0f, 1f, 0f );
-
-        renderPrintoutFirstPerson( stack );
-
-        GlStateManager.popMatrix();
-    }
-
-    /**
-     * Render an item in the middle of the screen
-     *
-     * @param pitch         The pitch of the player
-     * @param equipProgress The equip progress of this item
-     * @param swingProgress The swing progress of this item
-     * @param stack         The stack to render
-     * @see ItemRenderer#renderMapFirstPerson(float, float, float)
-     */
-    private void renderPrintoutFirstPersonCentre( float pitch, float equipProgress, float swingProgress, ItemStack stack )
-    {
-        ItemRenderer itemRenderer = Minecraft.getMinecraft().getItemRenderer();
-
-        // Setup the appropriate transformations. This is just copied from the
-        // corresponding method in ItemRenderer.
-        float swingRt = MathHelper.sqrt( swingProgress );
-        float tX = -0.2f * MathHelper.sin( swingProgress * (float) Math.PI );
-        float tZ = -0.4f * MathHelper.sin( swingRt * (float) Math.PI );
-        GlStateManager.translate( 0f, -tX / 2f, tZ );
-        float pitchAngle = itemRenderer.getMapAngleFromPitch( pitch );
-        GlStateManager.translate( 0f, 0.04f + equipProgress * -1.2f + pitchAngle * -0.5f, -0.72f );
-        GlStateManager.rotate( pitchAngle * -85f, 1f, 0f, 0f );
-        itemRenderer.renderArms();
-        float rX = MathHelper.sin( swingRt * (float) Math.PI );
-        GlStateManager.rotate( rX * 20f, 1f, 0f, 0f );
-        GlStateManager.scale( 2f, 2f, 2f );
-
-        renderPrintoutFirstPerson( stack );
-    }
-
-
-    private static void renderPrintoutFirstPerson( ItemStack stack )
+    @Override
+    protected void renderItem( ItemStack stack )
     {
         // Setup various transformations. Note that these are partially adapated from the corresponding method
         // in ItemRenderer.renderMapFirstPerson

src/main/java/dan200/computercraft/client/render/ModelTransformer.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.client.render;
 
 import net.minecraft.client.renderer.block.model.BakedQuad;
@@ -85,8 +91,8 @@ public final class ModelTransformer
         private final Matrix4f normalMatrix;
 
         private int vertexIndex = 0, elementIndex = 0;
-        private final Point3f[] before = new Point3f[ 4 ];
-        private final Point3f[] after = new Point3f[ 4 ];
+        private final Point3f[] before = new Point3f[4];
+        private final Point3f[] after = new Point3f[4];
 
         public NormalAwareTransformer( IVertexConsumer parent, Matrix4f positionMatrix, Matrix4f normalMatrix )
         {
@@ -96,7 +102,7 @@ public final class ModelTransformer
         }
 
         @Override
-        public void setQuadOrientation( EnumFacing orientation )
+        public void setQuadOrientation( @Nonnull EnumFacing orientation )
         {
             super.setQuadOrientation( orientation == null ? orientation : TRSRTransformation.rotate( positionMatrix, orientation ) );
         }
@@ -112,13 +118,13 @@ public final class ModelTransformer
                     Point3f newVec = new Point3f();
                     positionMatrix.transform( vec, newVec );
 
-                    float[] newData = new float[ 4 ];
+                    float[] newData = new float[4];
                     newVec.get( newData );
                     super.put( element, newData );
 
 
-                    before[ vertexIndex ] = vec;
-                    after[ vertexIndex ] = newVec;
+                    before[vertexIndex] = vec;
+                    after[vertexIndex] = newVec;
                     break;
                 }
                 case NORMAL:
@@ -126,7 +132,7 @@ public final class ModelTransformer
                     Vector3f vec = new Vector3f( data );
                     normalMatrix.transform( vec );
 
-                    float[] newData = new float[ 4 ];
+                    float[] newData = new float[4];
                     vec.get( newData );
                     super.put( element, newData );
                     break;
@@ -150,17 +156,17 @@ public final class ModelTransformer
             Vector3f crossBefore = new Vector3f(), crossAfter = new Vector3f();
 
             // Determine what cross product we expect to have
-            temp1.sub( before[ 1 ], before[ 0 ] );
-            temp2.sub( before[ 1 ], before[ 2 ] );
+            temp1.sub( before[1], before[0] );
+            temp2.sub( before[1], before[2] );
             crossBefore.cross( temp1, temp2 );
             normalMatrix.transform( crossBefore );
 
             // And determine what cross product we actually have
-            temp1.sub( after[ 1 ], after[ 0 ] );
-            temp2.sub( after[ 1 ], after[ 2 ] );
+            temp1.sub( after[1], after[0] );
+            temp2.sub( after[1], after[2] );
             crossAfter.cross( temp1, temp2 );
 
-            // If the angle between expected and actual cross product is greater than 
+            // If the angle between expected and actual cross product is greater than
             // pi/2 radians then we will need to reorder our quads.
             return Math.abs( crossBefore.angle( crossAfter ) ) >= Math.PI / 2;
         }
@@ -189,7 +195,7 @@ public final class ModelTransformer
         private BakedQuadBuilder( VertexFormat format )
         {
             this.format = format;
-            this.vertexData = new int[ format.getSize() ];
+            this.vertexData = new int[format.getSize()];
         }
 
         @Nonnull
@@ -241,9 +247,9 @@ public final class ModelTransformer
             int length = vertexData.length / 4;
             for( int i = 0; i < length; i++ )
             {
-                int temp = vertexData[ a * length + i ];
-                vertexData[ a * length + i ] = vertexData[ b * length + i ];
-                vertexData[ b * length + i ] = temp;
+                int temp = vertexData[a * length + i];
+                vertexData[a * length + i] = vertexData[b * length + i];
+                vertexData[b * length + i] = temp;
             }
         }
 

src/main/java/dan200/computercraft/client/render/PrintoutRenderer.java

@@ -1,6 +1,11 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.client.render;
 
-import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.client.gui.FixedWidthFontRenderer;
 import dan200.computercraft.core.terminal.TextBuffer;
 import dan200.computercraft.shared.util.Palette;
@@ -55,11 +60,11 @@ public class PrintoutRenderer
 
     public static void drawText( int x, int y, int start, TextBuffer[] text, TextBuffer[] colours )
     {
-        FixedWidthFontRenderer fontRenderer = (FixedWidthFontRenderer) ComputerCraft.getFixedWidthFontRenderer();
+        FixedWidthFontRenderer fontRenderer = FixedWidthFontRenderer.instance();
 
-        for( int line = 0; line < LINES_PER_PAGE && line < text.length; ++line )
+        for( int line = 0; line < LINES_PER_PAGE && line < text.length; line++ )
         {
-            fontRenderer.drawString( text[ start + line ], x, y + line * FONT_HEIGHT, colours[ start + line ], null, 0, 0, false, Palette.DEFAULT );
+            fontRenderer.drawString( text[start + line], x, y + line * FONT_HEIGHT, colours[start + line], null, 0, 0, false, Palette.DEFAULT );
         }
     }
 
@@ -69,11 +74,11 @@ public class PrintoutRenderer
         GlStateManager.enableBlend();
         GlStateManager.enableTexture2D();
 
-        FixedWidthFontRenderer fontRenderer = (FixedWidthFontRenderer) ComputerCraft.getFixedWidthFontRenderer();
+        FixedWidthFontRenderer fontRenderer = FixedWidthFontRenderer.instance();
 
-        for( int line = 0; line < LINES_PER_PAGE && line < text.length; ++line )
+        for( int line = 0; line < LINES_PER_PAGE && line < text.length; line++ )
         {
-            fontRenderer.drawString( new TextBuffer( text[ start + line ] ), x, y + line * FONT_HEIGHT, new TextBuffer( colours[ start + line ] ), null, 0, 0, false, Palette.DEFAULT );
+            fontRenderer.drawString( new TextBuffer( text[start + line] ), x, y + line * FONT_HEIGHT, new TextBuffer( colours[start + line] ), null, 0, 0, false, Palette.DEFAULT );
         }
     }
 
@@ -106,7 +111,7 @@ public class PrintoutRenderer
             // Draw centre panel (just stretched texture, sorry).
             drawTexture( buffer,
                 x - offset, y, z - 0.02, X_SIZE + offset * 2, Y_SIZE,
-                COVER_X + COVER_SIZE / 2, COVER_SIZE, COVER_SIZE, Y_SIZE
+                COVER_X + COVER_SIZE / 2.0f, COVER_SIZE, COVER_SIZE, Y_SIZE
             );
 
             double borderX = left;
@@ -120,7 +125,7 @@ public class PrintoutRenderer
         }
 
         // Left half
-        drawTexture( buffer, x, y, z, X_FOLD_SIZE * 2, 0, X_SIZE / 2, Y_SIZE );
+        drawTexture( buffer, x, y, z, X_FOLD_SIZE * 2, 0, X_SIZE / 2.0f, Y_SIZE );
         for( int n = 0; n <= leftPages; n++ )
         {
             drawTexture( buffer,
@@ -132,7 +137,7 @@ public class PrintoutRenderer
         }
 
         // Right half
-        drawTexture( buffer, x + X_SIZE / 2, y, z, X_FOLD_SIZE * 2 + X_SIZE / 2, 0, X_SIZE / 2, Y_SIZE );
+        drawTexture( buffer, x + X_SIZE / 2.0f, y, z, X_FOLD_SIZE * 2 + X_SIZE / 2.0f, 0, X_SIZE / 2.0f, Y_SIZE );
         for( int n = 0; n <= rightPages; n++ )
         {
             drawTexture( buffer,

src/main/java/dan200/computercraft/client/render/RenderOverlayCable.java

@@ -1,9 +1,15 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.client.render;
 
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.shared.peripheral.PeripheralType;
-import dan200.computercraft.shared.peripheral.common.BlockCable;
-import dan200.computercraft.shared.peripheral.modem.TileCable;
+import dan200.computercraft.shared.peripheral.modem.wired.BlockCable;
+import dan200.computercraft.shared.peripheral.modem.wired.CableBounds;
 import dan200.computercraft.shared.util.WorldUtil;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.client.renderer.BufferBuilder;
@@ -12,7 +18,6 @@ import net.minecraft.client.renderer.RenderGlobal;
 import net.minecraft.client.renderer.Tessellator;
 import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
 import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.RayTraceResult;
@@ -24,8 +29,8 @@ import org.lwjgl.opengl.GL11;
 public class RenderOverlayCable
 {
     private static final float EXPAND = 0.002f;
-    private static final double MIN = TileCable.MIN - EXPAND;
-    private static final double MAX = TileCable.MAX + EXPAND;
+    private static final double MIN = CableBounds.MIN - EXPAND;
+    private static final double MAX = CableBounds.MAX + EXPAND;
 
     @SubscribeEvent
     public void drawHighlight( DrawBlockHighlightEvent event )
@@ -38,13 +43,10 @@ public class RenderOverlayCable
         IBlockState state = world.getBlockState( pos );
         if( state.getBlock() != ComputerCraft.Blocks.cable ) return;
 
-        TileEntity tile = world.getTileEntity( pos );
-        if( tile == null || !(tile instanceof TileCable) ) return;
+        state = state.getActualState( world, pos );
 
         event.setCanceled( true );
-        TileCable cable = (TileCable) tile;
-
-        PeripheralType type = cable.getPeripheralType();
+        PeripheralType type = ComputerCraft.Blocks.cable.getPeripheralType( state );
 
         GlStateManager.enableBlend();
         GlStateManager.tryBlendFuncSeparate( GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, 1, 0 );
@@ -63,9 +65,9 @@ public class RenderOverlayCable
             GlStateManager.translate( -x + pos.getX(), -y + pos.getY(), -z + pos.getZ() );
         }
 
-        if( type != PeripheralType.Cable && WorldUtil.isVecInsideInclusive( cable.getModemBounds(), event.getTarget().hitVec.subtract( pos.getX(), pos.getY(), pos.getZ() ) ) )
+        if( type != PeripheralType.Cable && WorldUtil.isVecInsideInclusive( CableBounds.getModemBounds( state ), event.getTarget().hitVec.subtract( pos.getX(), pos.getY(), pos.getZ() ) ) )
         {
-            RenderGlobal.drawSelectionBoundingBox( cable.getModemBounds(), 0, 0, 0, 0.4f );
+            RenderGlobal.drawSelectionBoundingBox( CableBounds.getModemBounds( state ), 0, 0, 0, 0.4f );
         }
         else
         {

src/main/java/dan200/computercraft/client/render/TileEntityCableRenderer.java

@@ -1,18 +1,25 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.client.render;
 
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.shared.peripheral.PeripheralType;
-import dan200.computercraft.shared.peripheral.common.BlockCable;
-import dan200.computercraft.shared.peripheral.common.BlockCableModemVariant;
-import dan200.computercraft.shared.peripheral.modem.TileCable;
+import dan200.computercraft.shared.peripheral.modem.wired.BlockCable;
+import dan200.computercraft.shared.peripheral.modem.wired.BlockCableModemVariant;
+import dan200.computercraft.shared.peripheral.modem.wired.CableBounds;
+import dan200.computercraft.shared.peripheral.modem.wired.TileCable;
 import dan200.computercraft.shared.util.WorldUtil;
 import net.minecraft.block.Block;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.BufferBuilder;
 import net.minecraft.client.renderer.GlStateManager;
 import net.minecraft.client.renderer.RenderGlobal;
 import net.minecraft.client.renderer.Tessellator;
-import net.minecraft.client.renderer.BufferBuilder;
 import net.minecraft.client.renderer.block.model.IBakedModel;
 import net.minecraft.client.renderer.texture.TextureAtlasSprite;
 import net.minecraft.client.renderer.tileentity.TileEntitySpecialRenderer;
@@ -52,7 +59,7 @@ public class TileEntityCableRenderer extends TileEntitySpecialRenderer<TileCable
         if( block != ComputerCraft.Blocks.cable ) return;
 
         state = state.getActualState( world, pos );
-        if( te.getPeripheralType() != PeripheralType.Cable && WorldUtil.isVecInsideInclusive( te.getModemBounds(), hit.hitVec.subtract( pos.getX(), pos.getY(), pos.getZ() ) ) )
+        if( te.getPeripheralType() != PeripheralType.Cable && WorldUtil.isVecInsideInclusive( CableBounds.getModemBounds( state ), hit.hitVec.subtract( pos.getX(), pos.getY(), pos.getZ() ) ) )
         {
             state = block.getDefaultState().withProperty( BlockCable.Properties.MODEM, state.getValue( BlockCable.Properties.MODEM ) );
         }

src/main/java/dan200/computercraft/client/render/TileEntityMonitorRenderer.java

@@ -1,12 +1,12 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
 package dan200.computercraft.client.render;
 
-import dan200.computercraft.ComputerCraft;
+import dan200.computercraft.client.FrameInfo;
 import dan200.computercraft.client.gui.FixedWidthFontRenderer;
 import dan200.computercraft.core.terminal.Terminal;
 import dan200.computercraft.core.terminal.TextBuffer;
@@ -28,10 +28,6 @@ import org.lwjgl.opengl.GL11;
 
 public class TileEntityMonitorRenderer extends TileEntitySpecialRenderer<TileMonitor>
 {
-    public TileEntityMonitorRenderer()
-    {
-    }
-
     @Override
     public void render( TileMonitor tileEntity, double posX, double posY, double posZ, float f, int i, float f2 )
     {
@@ -51,9 +47,9 @@ public class TileEntityMonitorRenderer extends TileEntitySpecialRenderer<TileMon
         BlockPos monitorPos = monitor.getPos();
 
         // Ensure each monitor terminal is rendered only once. We allow rendering a specific tile
-        // multiple times in a single frame to ensure compatibility with shaders which may run a 
+        // multiple times in a single frame to ensure compatibility with shaders which may run a
         // pass multiple times.
-        long renderFrame = ComputerCraft.getRenderFrame();
+        long renderFrame = FrameInfo.instance().getRenderFrame();
         if( originTerminal.lastRenderFrame == renderFrame && !monitorPos.equals( originTerminal.lastRenderPos ) )
         {
             return;
@@ -70,7 +66,7 @@ public class TileEntityMonitorRenderer extends TileEntitySpecialRenderer<TileMon
         // Determine orientation
         EnumFacing dir = origin.getDirection();
         EnumFacing front = origin.getFront();
-        float yaw = DirectionUtil.toYawAngle( dir );
+        float yaw = dir.getHorizontalAngle();
         float pitch = DirectionUtil.toPitchAngle( front );
 
         GlStateManager.pushMatrix();
@@ -85,8 +81,8 @@ public class TileEntityMonitorRenderer extends TileEntitySpecialRenderer<TileMon
                 (origin.getHeight() - 0.5) - (TileMonitor.RENDER_BORDER + TileMonitor.RENDER_MARGIN),
                 0.5
             );
-            double xSize = origin.getWidth() - 2.0 * ( TileMonitor.RENDER_MARGIN + TileMonitor.RENDER_BORDER );
-            double ySize = origin.getHeight() - 2.0 * ( TileMonitor.RENDER_MARGIN + TileMonitor.RENDER_BORDER );
+            double xSize = origin.getWidth() - 2.0 * (TileMonitor.RENDER_MARGIN + TileMonitor.RENDER_BORDER);
+            double ySize = origin.getHeight() - 2.0 * (TileMonitor.RENDER_MARGIN + TileMonitor.RENDER_BORDER);
 
             // Get renderers
             Minecraft mc = Minecraft.getMinecraft();
@@ -121,17 +117,17 @@ public class TileEntityMonitorRenderer extends TileEntitySpecialRenderer<TileMon
                     int height = terminal.getHeight();
                     int cursorX = terminal.getCursorX();
                     int cursorY = terminal.getCursorY();
-                    FixedWidthFontRenderer fontRenderer = (FixedWidthFontRenderer) ComputerCraft.getFixedWidthFontRenderer();
+                    FixedWidthFontRenderer fontRenderer = FixedWidthFontRenderer.instance();
 
                     GlStateManager.pushMatrix();
                     try
                     {
-                        double xScale = xSize / ( width * FixedWidthFontRenderer.FONT_WIDTH );
-                        double yScale = ySize / ( height * FixedWidthFontRenderer.FONT_HEIGHT );
+                        double xScale = xSize / (width * FixedWidthFontRenderer.FONT_WIDTH);
+                        double yScale = ySize / (height * FixedWidthFontRenderer.FONT_HEIGHT);
                         GlStateManager.scale( xScale, -yScale, 1.0 );
 
                         // Draw background
-                        mc.getTextureManager().bindTexture( FixedWidthFontRenderer.background );
+                        mc.getTextureManager().bindTexture( FixedWidthFontRenderer.BACKGROUND );
                         if( redraw )
                         {
                             // Build background display list
@@ -158,14 +154,14 @@ public class TileEntityMonitorRenderer extends TileEntitySpecialRenderer<TileMon
                                 }
 
                                 // Backgrounds
-                                for( int y = 0; y < height; ++y )
+                                for( int y = 0; y < height; y++ )
                                 {
                                     fontRenderer.drawStringBackgroundPart(
-                                            0, FixedWidthFontRenderer.FONT_HEIGHT * y,
-                                            terminal.getBackgroundColourLine( y ),
-                                            marginXSize, marginXSize,
-                                            greyscale,
-                                            palette
+                                        0, FixedWidthFontRenderer.FONT_HEIGHT * y,
+                                        terminal.getBackgroundColourLine( y ),
+                                        marginXSize, marginXSize,
+                                        greyscale,
+                                        palette
                                     );
                                 }
                             }
@@ -186,14 +182,14 @@ public class TileEntityMonitorRenderer extends TileEntitySpecialRenderer<TileMon
                             try
                             {
                                 // Lines
-                                for( int y = 0; y < height; ++y )
+                                for( int y = 0; y < height; y++ )
                                 {
                                     fontRenderer.drawStringTextPart(
-                                            0, FixedWidthFontRenderer.FONT_HEIGHT * y,
-                                            terminal.getLine( y ),
-                                            terminal.getTextColourLine( y ),
-                                            greyscale,
-                                            palette
+                                        0, FixedWidthFontRenderer.FONT_HEIGHT * y,
+                                        terminal.getLine( y ),
+                                        terminal.getTextColourLine( y ),
+                                        greyscale,
+                                        palette
                                     );
                                 }
                             }
@@ -219,13 +215,13 @@ public class TileEntityMonitorRenderer extends TileEntitySpecialRenderer<TileMon
                                     TextBuffer cursor = new TextBuffer( "_" );
                                     TextBuffer cursorColour = new TextBuffer( "0123456789abcdef".charAt( terminal.getTextColour() ), 1 );
                                     fontRenderer.drawString(
-                                            cursor,
-                                            FixedWidthFontRenderer.FONT_WIDTH * cursorX,
-                                            FixedWidthFontRenderer.FONT_HEIGHT * cursorY,
-                                            cursorColour, null,
-                                            0, 0,
-                                            greyscale,
-                                            palette
+                                        cursor,
+                                        FixedWidthFontRenderer.FONT_WIDTH * cursorX,
+                                        FixedWidthFontRenderer.FONT_HEIGHT * cursorY,
+                                        cursorColour, null,
+                                        0, 0,
+                                        greyscale,
+                                        palette
                                     );
                                 }
                             }
@@ -234,7 +230,7 @@ public class TileEntityMonitorRenderer extends TileEntitySpecialRenderer<TileMon
                                 GlStateManager.glEndList();
                             }
                         }
-                        if( ComputerCraft.getGlobalCursorBlink() )
+                        if( FrameInfo.instance().getGlobalCursorBlink() )
                         {
                             GlStateManager.callList( originTerminal.renderDisplayLists[2] );
                             GlStateManager.resetColor();
@@ -248,7 +244,7 @@ public class TileEntityMonitorRenderer extends TileEntitySpecialRenderer<TileMon
                 else
                 {
                     // Draw a big black quad
-                    mc.getTextureManager().bindTexture( FixedWidthFontRenderer.background );
+                    mc.getTextureManager().bindTexture( FixedWidthFontRenderer.BACKGROUND );
                     final Colour colour = Colour.Black;
 
                     final float r = colour.getR();
@@ -274,7 +270,7 @@ public class TileEntityMonitorRenderer extends TileEntitySpecialRenderer<TileMon
             GlStateManager.colorMask( false, false, false, false );
             try
             {
-                mc.getTextureManager().bindTexture( FixedWidthFontRenderer.background );
+                mc.getTextureManager().bindTexture( FixedWidthFontRenderer.BACKGROUND );
                 renderer.begin( GL11.GL_TRIANGLE_STRIP, DefaultVertexFormats.POSITION );
                 renderer.pos( -TileMonitor.RENDER_MARGIN, TileMonitor.RENDER_MARGIN, 0.0 ).endVertex();
                 renderer.pos( -TileMonitor.RENDER_MARGIN, -ySize - TileMonitor.RENDER_MARGIN, 0.0 ).endVertex();

src/main/java/dan200/computercraft/client/render/TileEntityTurtleRenderer.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
@@ -10,7 +10,6 @@ import dan200.computercraft.api.turtle.ITurtleUpgrade;
 import dan200.computercraft.api.turtle.TurtleSide;
 import dan200.computercraft.shared.computer.core.ComputerFamily;
 import dan200.computercraft.shared.turtle.blocks.TileTurtle;
-import dan200.computercraft.shared.turtle.entity.TurtleVisionCamera;
 import dan200.computercraft.shared.util.Holiday;
 import dan200.computercraft.shared.util.HolidayUtil;
 import net.minecraft.block.state.IBlockState;
@@ -28,7 +27,6 @@ import net.minecraft.client.renderer.texture.TextureMap;
 import net.minecraft.client.renderer.tileentity.TileEntitySpecialRenderer;
 import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
 import net.minecraft.client.renderer.vertex.VertexFormat;
-import net.minecraft.entity.Entity;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.BlockPos;
@@ -44,36 +42,15 @@ import java.util.List;
 
 public class TileEntityTurtleRenderer extends TileEntitySpecialRenderer<TileTurtle>
 {
-    private static ModelResourceLocation NORMAL_TURTLE_MODEL = new ModelResourceLocation( "computercraft:turtle", "inventory" );
-    private static ModelResourceLocation ADVANCED_TURTLE_MODEL = new ModelResourceLocation( "computercraft:turtle_advanced", "inventory" );
-    private static ModelResourceLocation COLOUR_TURTLE_MODEL = new ModelResourceLocation( "computercraft:turtle_white", "inventory" );
-    private static ModelResourceLocation BEGINNER_TURTLE_MODEL = new ModelResourceLocation( "computercraftedu:CC-TurtleJunior", "inventory" );
-    private static ModelResourceLocation BEGINNER_TURTLE_COLOUR_MODEL = new ModelResourceLocation( "computercraftedu:turtleJunior_white", "inventory" );
-    private static ModelResourceLocation ELF_OVERLAY_MODEL = new ModelResourceLocation( "computercraft:turtle_elf_overlay", "inventory" );
-
-    public TileEntityTurtleRenderer()
-    {
-    }
+    private static final ModelResourceLocation NORMAL_TURTLE_MODEL = new ModelResourceLocation( "computercraft:turtle", "inventory" );
+    private static final ModelResourceLocation ADVANCED_TURTLE_MODEL = new ModelResourceLocation( "computercraft:turtle_advanced", "inventory" );
+    private static final ModelResourceLocation COLOUR_TURTLE_MODEL = new ModelResourceLocation( "computercraft:turtle_white", "inventory" );
+    private static final ModelResourceLocation ELF_OVERLAY_MODEL = new ModelResourceLocation( "computercraft:turtle_elf_overlay", "inventory" );
 
     @Override
     public void render( TileTurtle tileEntity, double posX, double posY, double posZ, float f, int i, float f2 )
     {
-        if( tileEntity != null )
-        {
-            // Check the turtle isn't first person
-            Entity viewEntity = Minecraft.getMinecraft().getRenderViewEntity();
-            if( viewEntity != null && viewEntity instanceof TurtleVisionCamera )
-            {
-                TurtleVisionCamera camera = (TurtleVisionCamera) viewEntity;
-                if( camera.getTurtle() == tileEntity.getAccess() )
-                {
-                    return;
-                }
-            }
-
-            // Render the turtle
-            renderTurtleAt( tileEntity, posX, posY, posZ, f, i );
-        }
+        if( tileEntity != null ) renderTurtleAt( tileEntity, posX, posY, posZ, f, i );
     }
 
     public static ModelResourceLocation getTurtleModel( ComputerFamily family, boolean coloured )
@@ -85,8 +62,6 @@ public class TileEntityTurtleRenderer extends TileEntitySpecialRenderer<TileTurt
                 return coloured ? COLOUR_TURTLE_MODEL : NORMAL_TURTLE_MODEL;
             case Advanced:
                 return coloured ? COLOUR_TURTLE_MODEL : ADVANCED_TURTLE_MODEL;
-            case Beginners:
-                return coloured ? BEGINNER_TURTLE_COLOUR_MODEL : BEGINNER_TURTLE_MODEL;
         }
     }
 
@@ -96,7 +71,7 @@ public class TileEntityTurtleRenderer extends TileEntitySpecialRenderer<TileTurt
         {
             return new ModelResourceLocation( overlay, "inventory" );
         }
-        else if( christmas && family != ComputerFamily.Beginners )
+        else if( christmas )
         {
             return ELF_OVERLAY_MODEL;
         }
@@ -192,7 +167,7 @@ public class TileEntityTurtleRenderer extends TileEntitySpecialRenderer<TileTurt
                 GlStateManager.rotate( -toolAngle, 1.0f, 0.0f, 0.0f );
                 GlStateManager.translate( 0.0f, -0.5f, -0.5f );
 
-                Pair<IBakedModel, Matrix4f> pair  = upgrade.getModel( turtle.getAccess(), side );
+                Pair<IBakedModel, Matrix4f> pair = upgrade.getModel( turtle.getAccess(), side );
                 if( pair != null )
                 {
                     if( pair.getRight() != null )
@@ -236,7 +211,7 @@ public class TileEntityTurtleRenderer extends TileEntitySpecialRenderer<TileTurt
         BufferBuilder buffer = tessellator.getBuffer();
         VertexFormat format = DefaultVertexFormats.ITEM;
         buffer.begin( GL11.GL_QUADS, format );
-        for (BakedQuad quad : quads)
+        for( BakedQuad quad : quads )
         {
             VertexFormat quadFormat = quad.getFormat();
             if( quadFormat != format )
@@ -250,7 +225,7 @@ public class TileEntityTurtleRenderer extends TileEntitySpecialRenderer<TileTurt
             if( quad.hasTintIndex() && tints != null )
             {
                 int index = quad.getTintIndex();
-                if( index >= 0 && index < tints.length ) colour = tints[ index ] | 0xFF000000;
+                if( index >= 0 && index < tints.length ) colour = tints[index] | 0xFF000000;
             }
 
             LightUtil.renderQuadColor( buffer, quad, colour );

src/main/java/dan200/computercraft/client/render/TurtleMultiModel.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.client.render;
 
 import net.minecraft.block.state.IBlockState;

src/main/java/dan200/computercraft/client/render/TurtleSmartItemModel.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
@@ -75,25 +75,17 @@ public class TurtleSmartItemModel implements IBakedModel, ISelectiveResourceRelo
         @Override
         public boolean equals( Object other )
         {
-            if( other == this )
-            {
-                return true;
-            }
-            if( other instanceof TurtleModelCombination )
-            {
-                TurtleModelCombination otherCombo = (TurtleModelCombination) other;
-                if( otherCombo.m_family == m_family &&
-                    otherCombo.m_colour == m_colour &&
-                    otherCombo.m_leftUpgrade == m_leftUpgrade &&
-                    otherCombo.m_rightUpgrade == m_rightUpgrade &&
-                    Objects.equal( otherCombo.m_overlay, m_overlay ) &&
-                    otherCombo.m_christmas == m_christmas &&
-                    otherCombo.m_flip == m_flip )
-                {
-                    return true;
-                }
-            }
-            return false;
+            if( other == this ) return true;
+            if( !(other instanceof TurtleModelCombination) ) return false;
+
+            TurtleModelCombination otherCombo = (TurtleModelCombination) other;
+            return otherCombo.m_family == m_family &&
+                otherCombo.m_colour == m_colour &&
+                otherCombo.m_leftUpgrade == m_leftUpgrade &&
+                otherCombo.m_rightUpgrade == m_rightUpgrade &&
+                Objects.equal( otherCombo.m_overlay, m_overlay ) &&
+                otherCombo.m_christmas == m_christmas &&
+                otherCombo.m_flip == m_flip;
         }
 
         @Override

src/main/java/dan200/computercraft/core/apis/AddressPredicate.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.core.apis;
 
 import com.google.common.net.InetAddresses;
@@ -32,8 +38,8 @@ public class AddressPredicate
 
             for( int i = 0; i < entry.length; i++ )
             {
-                int value = 0xFF & entry[ i ];
-                if( value < (0xFF & min[ i ]) || value > (0xFF & max[ i ]) ) return false;
+                int value = 0xFF & entry[i];
+                if( value < (0xFF & min[i]) || value > (0xFF & max[i]) ) return false;
             }
 
             return true;
@@ -85,13 +91,13 @@ public class AddressPredicate
                 {
                     if( size <= 0 )
                     {
-                        minBytes[ i ] &= 0;
-                        maxBytes[ i ] |= 0xFF;
+                        minBytes[i] &= 0;
+                        maxBytes[i] |= 0xFF;
                     }
                     else if( size < 8 )
                     {
-                        minBytes[ i ] &= 0xFF << (8 - size);
-                        maxBytes[ i ] |= ~(0xFF << (8 - size));
+                        minBytes[i] &= 0xFF << (8 - size);
+                        maxBytes[i] |= ~(0xFF << (8 - size));
                     }
 
                     size -= 8;
@@ -157,12 +163,8 @@ public class AddressPredicate
         if( matchesAddress( address ) ) return true;
 
         // If we're an IPv4 address in disguise then let's check that.
-        if( address instanceof Inet6Address && InetAddresses.is6to4Address( (Inet6Address) address )
-            && matchesAddress( InetAddresses.get6to4IPv4Address( (Inet6Address) address ) ) )
-        {
-            return true;
-        }
+        return address instanceof Inet6Address && InetAddresses.is6to4Address( (Inet6Address) address )
+            && matchesAddress( InetAddresses.get6to4IPv4Address( (Inet6Address) address ) );
 
-        return false;
     }
 }

src/main/java/dan200/computercraft/core/apis/ApiFactories.java

@@ -0,0 +1,36 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
+package dan200.computercraft.core.apis;
+
+import com.google.common.base.Preconditions;
+import dan200.computercraft.api.lua.ILuaAPIFactory;
+
+import javax.annotation.Nonnull;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.LinkedHashSet;
+
+public final class ApiFactories
+{
+    private ApiFactories()
+    {
+    }
+
+    private static final Collection<ILuaAPIFactory> factories = new LinkedHashSet<>();
+    private static final Collection<ILuaAPIFactory> factoriesView = Collections.unmodifiableCollection( factories );
+
+    public static void register( @Nonnull ILuaAPIFactory factory )
+    {
+        Preconditions.checkNotNull( factory, "provider cannot be null" );
+        factories.add( factory );
+    }
+
+    public static Iterable<ILuaAPIFactory> getAll()
+    {
+        return factoriesView;
+    }
+}

src/main/java/dan200/computercraft/core/apis/ArgumentHelper.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.core.apis;
 
 import dan200.computercraft.api.lua.LuaException;
@@ -58,7 +64,7 @@ public final class ArgumentHelper
     public static double getNumber( @Nonnull Object[] args, int index ) throws LuaException
     {
         if( index >= args.length ) throw badArgument( index, "number", "nil" );
-        Object value = args[ index ];
+        Object value = args[index];
         if( value instanceof Number )
         {
             return ((Number) value).doubleValue();
@@ -77,7 +83,7 @@ public final class ArgumentHelper
     public static long getLong( @Nonnull Object[] args, int index ) throws LuaException
     {
         if( index >= args.length ) throw badArgument( index, "number", "nil" );
-        Object value = args[ index ];
+        Object value = args[index];
         if( value instanceof Number )
         {
             return checkReal( index, (Number) value ).longValue();
@@ -96,7 +102,7 @@ public final class ArgumentHelper
     public static boolean getBoolean( @Nonnull Object[] args, int index ) throws LuaException
     {
         if( index >= args.length ) throw badArgument( index, "boolean", "nil" );
-        Object value = args[ index ];
+        Object value = args[index];
         if( value instanceof Boolean )
         {
             return (Boolean) value;
@@ -111,7 +117,7 @@ public final class ArgumentHelper
     public static String getString( @Nonnull Object[] args, int index ) throws LuaException
     {
         if( index >= args.length ) throw badArgument( index, "string", "nil" );
-        Object value = args[ index ];
+        Object value = args[index];
         if( value instanceof String )
         {
             return (String) value;
@@ -122,12 +128,12 @@ public final class ArgumentHelper
         }
     }
 
-    @SuppressWarnings("unchecked")
+    @SuppressWarnings( "unchecked" )
     @Nonnull
     public static Map<Object, Object> getTable( @Nonnull Object[] args, int index ) throws LuaException
     {
         if( index >= args.length ) throw badArgument( index, "table", "nil" );
-        Object value = args[ index ];
+        Object value = args[index];
         if( value instanceof Map )
         {
             return (Map<Object, Object>) value;
@@ -140,7 +146,7 @@ public final class ArgumentHelper
 
     public static double optNumber( @Nonnull Object[] args, int index, double def ) throws LuaException
     {
-        Object value = index < args.length ? args[ index ] : null;
+        Object value = index < args.length ? args[index] : null;
         if( value == null )
         {
             return def;
@@ -162,7 +168,7 @@ public final class ArgumentHelper
 
     public static long optLong( @Nonnull Object[] args, int index, long def ) throws LuaException
     {
-        Object value = index < args.length ? args[ index ] : null;
+        Object value = index < args.length ? args[index] : null;
         if( value == null )
         {
             return def;
@@ -184,7 +190,7 @@ public final class ArgumentHelper
 
     public static boolean optBoolean( @Nonnull Object[] args, int index, boolean def ) throws LuaException
     {
-        Object value = index < args.length ? args[ index ] : null;
+        Object value = index < args.length ? args[index] : null;
         if( value == null )
         {
             return def;
@@ -201,7 +207,7 @@ public final class ArgumentHelper
 
     public static String optString( @Nonnull Object[] args, int index, String def ) throws LuaException
     {
-        Object value = index < args.length ? args[ index ] : null;
+        Object value = index < args.length ? args[index] : null;
         if( value == null )
         {
             return def;
@@ -216,10 +222,10 @@ public final class ArgumentHelper
         }
     }
 
-    @SuppressWarnings("unchecked")
+    @SuppressWarnings( "unchecked" )
     public static Map<Object, Object> optTable( @Nonnull Object[] args, int index, Map<Object, Object> def ) throws LuaException
     {
-        Object value = index < args.length ? args[ index ] : null;
+        Object value = index < args.length ? args[index] : null;
         if( value == null )
         {
             return def;

src/main/java/dan200/computercraft/core/apis/BufferAPI.java

@@ -1,135 +0,0 @@
-/*
- * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
- * Send enquiries to dratcliffe@gmail.com
- */
-
-package dan200.computercraft.core.apis;
-
-import dan200.computercraft.api.lua.ILuaAPI;
-import dan200.computercraft.api.lua.ILuaContext;
-import dan200.computercraft.api.lua.ILuaObject;
-import dan200.computercraft.api.lua.LuaException;
-import dan200.computercraft.core.terminal.TextBuffer;
-
-import javax.annotation.Nonnull;
-
-import static dan200.computercraft.core.apis.ArgumentHelper.getString;
-import static dan200.computercraft.core.apis.ArgumentHelper.optInt;
-
-public class BufferAPI implements ILuaAPI
-{
-    private static class BufferLuaObject implements ILuaObject
-    {
-        private TextBuffer m_buffer;
-
-        public BufferLuaObject( TextBuffer buffer )
-        {
-            m_buffer = buffer;
-        }
-
-        @Nonnull
-        @Override
-        public String[] getMethodNames()
-        {
-            return new String[] {
-                "len",
-                "tostring",
-                "read",
-                "write",
-                "fill"
-            };
-        }
-
-        @Override
-        public Object[] callMethod( @Nonnull ILuaContext context, int method, @Nonnull Object[] arguments ) throws LuaException, InterruptedException
-        {
-            switch( method )
-            {
-                case 0:
-                {
-                    // len
-                    return new Object[] { m_buffer.length() };
-                }
-                case 1:
-                {
-                    // tostring
-                    return new Object[] { m_buffer.toString() };
-                }
-                case 2:
-                {
-                    // read
-                    int start = optInt( arguments, 0, 0 );
-                    int end = optInt( arguments, 1, m_buffer.length() );
-                    return new Object[] { m_buffer.read( start, end ) };
-                }
-                case 3:
-                {
-                    // write
-                    String text = getString( arguments, 0 );
-                    int start = optInt( arguments, 1, 0 );
-                    int end = optInt( arguments, 2, start + text.length() );
-                    m_buffer.write( text, start, end );
-                    return null;
-                }
-                case 4:
-                {
-                    // fill
-                    String text = getString( arguments, 0 );
-                    int start = optInt( arguments, 1, 0 );
-                    int end = optInt( arguments, 2, m_buffer.length() );
-                    m_buffer.fill( text, start, end );
-                    return null;
-                }
-                default:
-                {
-                    return null;
-                }
-            }
-        }
-    }
-
-    public BufferAPI( IAPIEnvironment _env )
-    {
-    }
-
-    @Override
-    public String[] getNames()
-    {
-        return new String[] {
-            "buffer"
-        };
-    }
-
-    @Nonnull
-    @Override
-    public String[] getMethodNames()
-    {
-        return new String[] {
-            "new"
-        };
-    }
-
-    @Override
-    public Object[] callMethod( @Nonnull ILuaContext context, int method, @Nonnull Object[] arguments ) throws LuaException, InterruptedException
-    {
-        switch( method )
-        {
-            case 0:
-            {
-                String text = getString( arguments, 0 );
-                int repetitions = optInt( arguments, 1, 1 );
-                if( repetitions < 0 )
-                {
-                    throw ArgumentHelper.badArgument( 1, "positive number", Integer.toString( repetitions ) );
-                }
-                TextBuffer buffer = new TextBuffer( text, repetitions );
-                return new Object[] { new BufferLuaObject( buffer ) };
-            }
-            default:
-            {
-                return null;
-            }
-        }
-    }
-}

src/main/java/dan200/computercraft/core/apis/ComputerAccess.java

@@ -1,5 +1,12 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.core.apis;
 
+import com.google.common.base.Preconditions;
 import dan200.computercraft.api.filesystem.IMount;
 import dan200.computercraft.api.filesystem.IWritableMount;
 import dan200.computercraft.api.peripheral.IComputerAccess;
@@ -11,6 +18,7 @@ import dan200.computercraft.core.filesystem.FileSystemException;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.util.HashSet;
+import java.util.Objects;
 import java.util.Set;
 
 public abstract class ComputerAccess implements IComputerAccess, IComputerOwned
@@ -33,22 +41,17 @@ public abstract class ComputerAccess implements IComputerAccess, IComputerOwned
         m_mounts.clear();
     }
 
-    @Override
-    public String mount( @Nonnull String desiredLoc, @Nonnull IMount mount )
-    {
-        return mount( desiredLoc, mount, getAttachmentName() );
-    }
-
     @Override
     public synchronized String mount( @Nonnull String desiredLoc, @Nonnull IMount mount, @Nonnull String driveName )
     {
+        Objects.requireNonNull( desiredLoc, "desiredLocation cannot be null" );
+        Objects.requireNonNull( mount, "mount cannot be null" );
+        Objects.requireNonNull( driveName, "driveName cannot be null" );
+
         // Mount the location
         String location;
         FileSystem fileSystem = m_environment.getFileSystem();
-        if( fileSystem == null )
-        {
-            throw new IllegalStateException( "File system has not been created" );
-        }
+        if( fileSystem == null ) throw new IllegalStateException( "File system has not been created" );
 
         synchronized( fileSystem )
         {
@@ -64,29 +67,22 @@ public abstract class ComputerAccess implements IComputerAccess, IComputerOwned
                 }
             }
         }
-        if( location != null )
-        {
-            m_mounts.add( location );
-        }
-        return location;
-    }
 
-    @Override
-    public String mountWritable( @Nonnull String desiredLoc, @Nonnull IWritableMount mount )
-    {
-        return mountWritable( desiredLoc, mount, getAttachmentName() );
+        if( location != null ) m_mounts.add( location );
+        return location;
     }
 
     @Override
     public synchronized String mountWritable( @Nonnull String desiredLoc, @Nonnull IWritableMount mount, @Nonnull String driveName )
     {
+        Objects.requireNonNull( desiredLoc, "desiredLocation cannot be null" );
+        Objects.requireNonNull( mount, "mount cannot be null" );
+        Objects.requireNonNull( driveName, "driveName cannot be null" );
+
         // Mount the location
         String location;
         FileSystem fileSystem = m_environment.getFileSystem();
-        if( fileSystem == null )
-        {
-            throw new IllegalStateException( "File system has not been created" );
-        }
+        if( fileSystem == null ) throw new IllegalStateException( "File system has not been created" );
 
         synchronized( fileSystem )
         {
@@ -102,26 +98,19 @@ public abstract class ComputerAccess implements IComputerAccess, IComputerOwned
                 }
             }
         }
-        if( location != null )
-        {
-            m_mounts.add( location );
-        }
+
+        if( location != null ) m_mounts.add( location );
         return location;
     }
 
     @Override
     public void unmount( String location )
     {
-        if( location != null )
-        {
-            if( !m_mounts.contains( location ) )
-            {
-                throw new RuntimeException( "You didn't mount this location" );
-            }
+        if( location == null ) return;
+        if( !m_mounts.contains( location ) ) throw new IllegalStateException( "You didn't mount this location" );
 
-            m_environment.getFileSystem().unmount( location );
-            m_mounts.remove( location );
-        }
+        m_environment.getFileSystem().unmount( location );
+        m_mounts.remove( location );
     }
 
     @Override
@@ -133,6 +122,7 @@ public abstract class ComputerAccess implements IComputerAccess, IComputerOwned
     @Override
     public void queueEvent( @Nonnull final String event, final Object[] arguments )
     {
+        Preconditions.checkNotNull( event, "event cannot be null" );
         m_environment.queueEvent( event, arguments );
     }
 
@@ -148,13 +138,9 @@ public abstract class ComputerAccess implements IComputerAccess, IComputerOwned
         try
         {
             FileSystem fileSystem = m_environment.getFileSystem();
-            if( !fileSystem.exists( desiredLoc ) )
-            {
-                return desiredLoc;
-            }
+            if( !fileSystem.exists( desiredLoc ) ) return desiredLoc;
 
-            // We used to check foo2,foo3,foo4,etc here
-            // but the disk drive does this itself now
+            // We used to check foo2, foo3, foo4, etc here but the disk drive does this itself now
             return null;
         }
         catch( FileSystemException e )

src/main/java/dan200/computercraft/core/apis/FSAPI.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
@@ -33,13 +33,13 @@ public class FSAPI implements ILuaAPI
 {
     private IAPIEnvironment m_env;
     private FileSystem m_fileSystem;
-    
+
     public FSAPI( IAPIEnvironment _env )
     {
         m_env = _env;
         m_fileSystem = null;
     }
-    
+
     @Override
     public String[] getNames()
     {
@@ -49,13 +49,13 @@ public class FSAPI implements ILuaAPI
     }
 
     @Override
-    public void startup( )
+    public void startup()
     {
         m_fileSystem = m_env.getFileSystem();
     }
 
     @Override
-    public void shutdown( )
+    public void shutdown()
     {
         m_fileSystem = null;
     }
@@ -94,11 +94,13 @@ public class FSAPI implements ILuaAPI
                 // list
                 String path = getString( args, 0 );
                 m_env.addTrackingChange( TrackingField.FS_OPS );
-                try {
+                try
+                {
                     String[] results = m_fileSystem.list( path );
-                    Map<Object,Object> table = new HashMap<>();
-                    for(int i=0; i<results.length; ++i ) {
-                        table.put( i+1, results[i] );
+                    Map<Object, Object> table = new HashMap<>();
+                    for( int i = 0; i < results.length; i++ )
+                    {
+                        table.put( i + 1, results[i] );
                     }
                     return new Object[] { table };
                 }
@@ -118,7 +120,7 @@ public class FSAPI implements ILuaAPI
             {
                 // getName
                 String path = getString( args, 0 );
-                return new Object[]{ FileSystem.getName( path ) };
+                return new Object[] { FileSystem.getName( path ) };
             }
             case 3:
             {
@@ -126,7 +128,7 @@ public class FSAPI implements ILuaAPI
                 String path = getString( args, 0 );
                 try
                 {
-                    return new Object[]{ m_fileSystem.getSize( path ) };
+                    return new Object[] { m_fileSystem.getSize( path ) };
                 }
                 catch( FileSystemException e )
                 {
@@ -137,41 +139,53 @@ public class FSAPI implements ILuaAPI
             {
                 // exists
                 String path = getString( args, 0 );
-                try {
-                    return new Object[]{ m_fileSystem.exists( path ) };
-                } catch( FileSystemException e ) {
-                    return new Object[]{ false };
+                try
+                {
+                    return new Object[] { m_fileSystem.exists( path ) };
+                }
+                catch( FileSystemException e )
+                {
+                    return new Object[] { false };
                 }
             }
             case 5:
             {
                 // isDir
                 String path = getString( args, 0 );
-                try {
-                    return new Object[]{ m_fileSystem.isDir( path ) };
-                } catch( FileSystemException e ) {
-                    return new Object[]{ false };
+                try
+                {
+                    return new Object[] { m_fileSystem.isDir( path ) };
+                }
+                catch( FileSystemException e )
+                {
+                    return new Object[] { false };
                 }
             }
             case 6:
             {
                 // isReadOnly
                 String path = getString( args, 0 );
-                try {
-                    return new Object[]{ m_fileSystem.isReadOnly( path ) };
-                } catch( FileSystemException e ) {
-                    return new Object[]{ false };
+                try
+                {
+                    return new Object[] { m_fileSystem.isReadOnly( path ) };
+                }
+                catch( FileSystemException e )
+                {
+                    return new Object[] { false };
                 }
             }
             case 7:
             {
                 // makeDir
                 String path = getString( args, 0 );
-                try {
+                try
+                {
                     m_env.addTrackingChange( TrackingField.FS_OPS );
                     m_fileSystem.makeDir( path );
                     return null;
-                } catch( FileSystemException e ) {
+                }
+                catch( FileSystemException e )
+                {
                     throw new LuaException( e.getMessage() );
                 }
             }
@@ -180,11 +194,14 @@ public class FSAPI implements ILuaAPI
                 // move
                 String path = getString( args, 0 );
                 String dest = getString( args, 1 );
-                try {
+                try
+                {
                     m_env.addTrackingChange( TrackingField.FS_OPS );
                     m_fileSystem.move( path, dest );
                     return null;
-                } catch( FileSystemException e ) {
+                }
+                catch( FileSystemException e )
+                {
                     throw new LuaException( e.getMessage() );
                 }
             }
@@ -193,11 +210,14 @@ public class FSAPI implements ILuaAPI
                 // copy
                 String path = getString( args, 0 );
                 String dest = getString( args, 1 );
-                try {
+                try
+                {
                     m_env.addTrackingChange( TrackingField.FS_OPS );
                     m_fileSystem.copy( path, dest );
                     return null;
-                } catch( FileSystemException e ) {
+                }
+                catch( FileSystemException e )
+                {
                     throw new LuaException( e.getMessage() );
                 }
             }
@@ -205,11 +225,14 @@ public class FSAPI implements ILuaAPI
             {
                 // delete
                 String path = getString( args, 0 );
-                try {
+                try
+                {
                     m_env.addTrackingChange( TrackingField.FS_OPS );
                     m_fileSystem.delete( path );
                     return null;
-                } catch( FileSystemException e ) {
+                }
+                catch( FileSystemException e )
+                {
                     throw new LuaException( e.getMessage() );
                 }
             }
@@ -219,7 +242,8 @@ public class FSAPI implements ILuaAPI
                 String path = getString( args, 0 );
                 String mode = getString( args, 1 );
                 m_env.addTrackingChange( TrackingField.FS_OPS );
-                try {
+                try
+                {
                     switch( mode )
                     {
                         case "r":
@@ -261,7 +285,9 @@ public class FSAPI implements ILuaAPI
                         default:
                             throw new LuaException( "Unsupported mode" );
                     }
-                } catch( FileSystemException e ) {
+                }
+                catch( FileSystemException e )
+                {
                     return new Object[] { null, e.getMessage() };
                 }
             }
@@ -269,13 +295,16 @@ public class FSAPI implements ILuaAPI
             {
                 // getDrive
                 String path = getString( args, 0 );
-                try {
+                try
+                {
                     if( !m_fileSystem.exists( path ) )
                     {
                         return null;
                     }
-                    return new Object[]{ m_fileSystem.getMountLabel( path ) };
-                } catch( FileSystemException e ) {
+                    return new Object[] { m_fileSystem.getMountLabel( path ) };
+                }
+                catch( FileSystemException e )
+                {
                     throw new LuaException( e.getMessage() );
                 }
             }
@@ -283,14 +312,17 @@ public class FSAPI implements ILuaAPI
             {
                 // getFreeSpace
                 String path = getString( args, 0 );
-                try {
+                try
+                {
                     long freeSpace = m_fileSystem.getFreeSpace( path );
                     if( freeSpace >= 0 )
                     {
-                        return new Object[]{ freeSpace };
+                        return new Object[] { freeSpace };
                     }
-                    return new Object[]{ "unlimited" };
-                } catch( FileSystemException e ) {
+                    return new Object[] { "unlimited" };
+                }
+                catch( FileSystemException e )
+                {
                     throw new LuaException( e.getMessage() );
                 }
             }
@@ -298,15 +330,19 @@ public class FSAPI implements ILuaAPI
             {
                 // find
                 String path = getString( args, 0 );
-                try {
+                try
+                {
                     m_env.addTrackingChange( TrackingField.FS_OPS );
                     String[] results = m_fileSystem.find( path );
-                    Map<Object,Object> table = new HashMap<>();
-                    for(int i=0; i<results.length; ++i ) {
-                        table.put( i+1, results[i] );
+                    Map<Object, Object> table = new HashMap<>();
+                    for( int i = 0; i < results.length; i++ )
+                    {
+                        table.put( i + 1, results[i] );
                     }
                     return new Object[] { table };
-                } catch( FileSystemException e ) {
+                }
+                catch( FileSystemException e )
+                {
                     throw new LuaException( e.getMessage() );
                 }
             }
@@ -314,11 +350,11 @@ public class FSAPI implements ILuaAPI
             {
                 // getDir
                 String path = getString( args, 0 );
-                return new Object[]{ FileSystem.getDirectory( path ) };
+                return new Object[] { FileSystem.getDirectory( path ) };
             }
             default:
             {
-                assert( false );
+                assert (false);
                 return null;
             }
         }

src/main/java/dan200/computercraft/core/apis/HTTPAPI.java

@@ -1,101 +1,81 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
 package dan200.computercraft.core.apis;
 
-import com.google.common.collect.ImmutableSet;
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.api.lua.ILuaAPI;
 import dan200.computercraft.api.lua.ILuaContext;
 import dan200.computercraft.api.lua.LuaException;
 import dan200.computercraft.core.apis.http.*;
+import dan200.computercraft.core.apis.http.request.HttpRequest;
+import dan200.computercraft.core.apis.http.websocket.Websocket;
+import io.netty.handler.codec.http.DefaultHttpHeaders;
+import io.netty.handler.codec.http.HttpHeaders;
+import io.netty.handler.codec.http.HttpMethod;
 
 import javax.annotation.Nonnull;
-import java.io.Closeable;
-import java.io.IOException;
 import java.net.URI;
-import java.net.URL;
-import java.util.*;
-import java.util.concurrent.Future;
+import java.util.Collections;
+import java.util.Locale;
+import java.util.Map;
 
 import static dan200.computercraft.core.apis.ArgumentHelper.*;
 import static dan200.computercraft.core.apis.TableHelper.*;
 
 public class HTTPAPI implements ILuaAPI
 {
-    private static final Set<String> HTTP_METHODS = ImmutableSet.of(
-        "GET", "POST", "HEAD", "OPTIONS", "PUT", "DELETE"
-    );
-
     private final IAPIEnvironment m_apiEnvironment;
-    private final List<Future<?>> m_httpTasks;
-    private final Set<Closeable> m_closeables;
+
+    private final ResourceGroup<CheckUrl> checkUrls = new ResourceGroup<>();
+    private final ResourceGroup<HttpRequest> requests = new ResourceQueue<>( () -> ComputerCraft.httpMaxRequests );
+    private final ResourceGroup<Websocket> websockets = new ResourceGroup<>( () -> ComputerCraft.httpMaxWebsockets );
 
     public HTTPAPI( IAPIEnvironment environment )
     {
         m_apiEnvironment = environment;
-        m_httpTasks = new ArrayList<>();
-        m_closeables = new HashSet<>();
     }
 
     @Override
     public String[] getNames()
     {
-        return new String[]{
+        return new String[] {
             "http"
         };
     }
 
     @Override
-    public void update()
+    public void startup()
     {
-        // Wait for all of our http requests
-        synchronized( m_httpTasks )
-        {
-            Iterator<Future<?>> it = m_httpTasks.iterator();
-            while( it.hasNext() )
-            {
-                final Future<?> h = it.next();
-                if( h.isDone() ) it.remove();
-            }
-        }
+        checkUrls.startup();
+        requests.startup();
+        websockets.startup();
     }
 
     @Override
     public void shutdown()
     {
-        synchronized( m_httpTasks )
-        {
-            for( Future<?> r : m_httpTasks )
-            {
-                r.cancel( false );
-            }
-            m_httpTasks.clear();
-        }
-        synchronized( m_closeables )
-        {
-            for( Closeable x : m_closeables )
-            {
-                try
-                {
-                    x.close();
-                }
-                catch( IOException ignored )
-                {
-                }
-            }
-            m_closeables.clear();
-        }
+        checkUrls.shutdown();
+        requests.shutdown();
+        websockets.shutdown();
+    }
+
+    @Override
+    public void update()
+    {
+        // It's rather ugly to run this here, but we need to clean up
+        // resources as often as possible to reduce blocking.
+        Resource.cleanup();
     }
 
     @Nonnull
     @Override
     public String[] getMethodNames()
     {
-        return new String[]{
+        return new String[] {
             "request",
             "checkURL",
             "websocket",
@@ -109,16 +89,16 @@ public class HTTPAPI implements ILuaAPI
         {
             case 0: // request
             {
-                String urlString, postString, requestMethod;
+                String address, postString, requestMethod;
                 Map<Object, Object> headerTable;
                 boolean binary, redirect;
 
                 if( args.length >= 1 && args[0] instanceof Map )
                 {
                     Map<?, ?> options = (Map) args[0];
-                    urlString = getStringField( options, "url" );
+                    address = getStringField( options, "url" );
                     postString = optStringField( options, "body", null );
-                    headerTable = optTableField( options, "headers", null );
+                    headerTable = optTableField( options, "headers", Collections.emptyMap() );
                     binary = optBooleanField( options, "binary", false );
                     requestMethod = optStringField( options, "method", null );
                     redirect = optBooleanField( options, "redirect", true );
@@ -127,70 +107,68 @@ public class HTTPAPI implements ILuaAPI
                 else
                 {
                     // Get URL and post information
-                    urlString = getString( args, 0 );
+                    address = getString( args, 0 );
                     postString = optString( args, 1, null );
-                    headerTable = optTable( args, 2, null );
+                    headerTable = optTable( args, 2, Collections.emptyMap() );
                     binary = optBoolean( args, 3, false );
                     requestMethod = null;
                     redirect = true;
                 }
 
-                Map<String, String> headers = null;
-                if( headerTable != null )
+                HttpHeaders headers = getHeaders( headerTable );
+
+
+                HttpMethod httpMethod;
+                if( requestMethod == null )
                 {
-                    headers = new HashMap<>( headerTable.size() );
-                    for( Object key : headerTable.keySet() )
+                    httpMethod = postString == null ? HttpMethod.GET : HttpMethod.POST;
+                }
+                else
+                {
+                    httpMethod = HttpMethod.valueOf( requestMethod.toUpperCase( Locale.ROOT ) );
+                    if( httpMethod == null || requestMethod.equalsIgnoreCase( "CONNECT" ) )
                     {
-                        Object value = headerTable.get( key );
-                        if( key instanceof String && value instanceof String )
-                        {
-                            headers.put( (String) key, (String) value );
-                        }
+                        throw new LuaException( "Unsupported HTTP method" );
                     }
                 }
 
-
-                if( requestMethod != null && !HTTP_METHODS.contains( requestMethod ) )
-                {
-                    throw new LuaException( "Unsupported HTTP method" );
-                }
-
-                // Make the request
                 try
                 {
-                    URL url = HTTPRequest.checkURL( urlString );
-                    HTTPRequest request = new HTTPRequest( m_apiEnvironment, urlString, url, postString, headers, binary, requestMethod, redirect );
-                    synchronized( m_httpTasks )
+                    URI uri = HttpRequest.checkUri( address );
+
+                    HttpRequest request = new HttpRequest( requests, m_apiEnvironment, address, postString, headers, binary, redirect );
+
+                    long requestBody = request.body().readableBytes() + HttpRequest.getHeaderSize( headers );
+                    if( ComputerCraft.httpMaxUpload != 0 && requestBody > ComputerCraft.httpMaxUpload )
                     {
-                        m_httpTasks.add( HTTPExecutor.EXECUTOR.submit( request ) );
+                        throw new HTTPRequestException( "Request body is too large" );
                     }
-                    return new Object[]{ true };
+
+                    // Make the request
+                    request.queue( r -> r.request( uri, httpMethod ) );
+
+                    return new Object[] { true };
                 }
                 catch( HTTPRequestException e )
                 {
-                    return new Object[]{ false, e.getMessage() };
+                    return new Object[] { false, e.getMessage() };
                 }
             }
-            case 1:
+            case 1: // checkURL
             {
-                // checkURL
-                // Get URL
-                String urlString = getString( args, 0 );
+                String address = getString( args, 0 );
 
                 // Check URL
                 try
                 {
-                    URL url = HTTPRequest.checkURL( urlString );
-                    HTTPCheck check = new HTTPCheck( m_apiEnvironment, urlString, url );
-                    synchronized( m_httpTasks )
-                    {
-                        m_httpTasks.add( HTTPExecutor.EXECUTOR.submit( check ) );
-                    }
-                    return new Object[]{ true };
+                    URI uri = HttpRequest.checkUri( address );
+                    new CheckUrl( checkUrls, m_apiEnvironment, address, uri ).queue( CheckUrl::run );
+
+                    return new Object[] { true };
                 }
                 catch( HTTPRequestException e )
                 {
-                    return new Object[]{ false, e.getMessage() };
+                    return new Object[] { false, e.getMessage() };
                 }
             }
             case 2: // websocket
@@ -198,36 +176,26 @@ public class HTTPAPI implements ILuaAPI
                 String address = getString( args, 0 );
                 Map<Object, Object> headerTbl = optTable( args, 1, Collections.emptyMap() );
 
-                HashMap<String, String> headers = new HashMap<String, String>( headerTbl.size() );
-                for( Object key : headerTbl.keySet() )
-                {
-                    Object value = headerTbl.get( key );
-                    if( key instanceof String && value instanceof String )
-                    {
-                        headers.put( (String) key, (String) value );
-                    }
-                }
-
                 if( !ComputerCraft.http_websocket_enable )
                 {
                     throw new LuaException( "Websocket connections are disabled" );
                 }
 
+                HttpHeaders headers = getHeaders( headerTbl );
+
                 try
                 {
-                    URI uri = WebsocketConnector.checkURI( address );
-                    int port = WebsocketConnector.getPort( uri );
-
-                    Future<?> connector = WebsocketConnector.createConnector( m_apiEnvironment, this, uri, address, port, headers );
-                    synchronized( m_httpTasks )
+                    URI uri = Websocket.checkUri( address );
+                    if( !new Websocket( websockets, m_apiEnvironment, uri, address, headers ).queue( Websocket::connect ) )
                     {
-                        m_httpTasks.add( connector );
+                        throw new LuaException( "Too many websockets already open" );
                     }
-                    return new Object[]{ true };
+
+                    return new Object[] { true };
                 }
                 catch( HTTPRequestException e )
                 {
-                    return new Object[]{ false, e.getMessage() };
+                    return new Object[] { false, e.getMessage() };
                 }
             }
             default:
@@ -237,19 +205,25 @@ public class HTTPAPI implements ILuaAPI
         }
     }
 
-    public void addCloseable( Closeable closeable )
+    @Nonnull
+    private static HttpHeaders getHeaders( @Nonnull Map<?, ?> headerTable ) throws LuaException
     {
-        synchronized( m_closeables )
+        HttpHeaders headers = new DefaultHttpHeaders();
+        for( Object key : headerTable.keySet() )
         {
-            m_closeables.add( closeable );
-        }
-    }
-
-    public void removeCloseable( Closeable closeable )
-    {
-        synchronized( m_closeables )
-        {
-            m_closeables.remove( closeable );
+            Object value = headerTable.get( key );
+            if( key instanceof String && value instanceof String )
+            {
+                try
+                {
+                    headers.add( (String) key, value );
+                }
+                catch( IllegalArgumentException e )
+                {
+                    throw new LuaException( e.getMessage() );
+                }
+            }
         }
+        return headers;
     }
 }

src/main/java/dan200/computercraft/core/apis/IAPIEnvironment.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
@@ -23,27 +23,39 @@ public interface IAPIEnvironment extends IComputerOwned
 
     @Override
     Computer getComputer();
+
     int getComputerID();
+
     IComputerEnvironment getComputerEnvironment();
+
     Terminal getTerminal();
+
     FileSystem getFileSystem();
-    
+
     void shutdown();
+
     void reboot();
+
     void queueEvent( String event, Object[] args );
 
     void setOutput( int side, int output );
+
     int getOutput( int side );
+
     int getInput( int side );
 
     void setBundledOutput( int side, int output );
+
     int getBundledOutput( int side );
+
     int getBundledInput( int side );
-    
+
     void setPeripheralChangeListener( IPeripheralChangeListener listener );
+
     IPeripheral getPeripheral( int side );
 
     String getLabel();
+
     void setLabel( String label );
 
     void addTrackingChange( TrackingField field, long change );

src/main/java/dan200/computercraft/core/apis/ILuaAPI.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.core.apis;
 
 /**
@@ -5,6 +11,7 @@ package dan200.computercraft.core.apis;
  *
  * @see dan200.computercraft.api.lua.ILuaAPI
  */
+@Deprecated
 public interface ILuaAPI extends dan200.computercraft.api.lua.ILuaAPI
 {
     void advance( double v );

src/main/java/dan200/computercraft/core/apis/OSAPI.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
@@ -28,7 +28,7 @@ public class OSAPI implements ILuaAPI
 
     private int m_nextTimerToken;
     private int m_nextAlarmToken;
-    
+
     private static class Timer
     {
         public int m_ticksLeft;
@@ -38,7 +38,7 @@ public class OSAPI implements ILuaAPI
             m_ticksLeft = ticksLeft;
         }
     }
-    
+
     private class Alarm implements Comparable<Alarm>
     {
         public final double m_time;
@@ -55,16 +55,10 @@ public class OSAPI implements ILuaAPI
         {
             double t = m_day * 24.0 + m_time;
             double ot = m_day * 24.0 + m_time;
-            if( t < ot ) {
-                return -1;
-            } else if( t > ot ) {
-                return 1;
-            } else {
-                return 0;
-            }
+            return Double.compare( t, ot );
         }
     }
-    
+
     public OSAPI( IAPIEnvironment environment )
     {
         m_apiEnvironment = environment;
@@ -73,9 +67,9 @@ public class OSAPI implements ILuaAPI
         m_timers = new HashMap<>();
         m_alarms = new HashMap<>();
     }
-    
+
     // ILuaAPI implementation
-    
+
     @Override
     public String[] getNames()
     {
@@ -83,7 +77,7 @@ public class OSAPI implements ILuaAPI
             "os"
         };
     }
-    
+
     @Override
     public void startup()
     {
@@ -101,7 +95,7 @@ public class OSAPI implements ILuaAPI
             m_alarms.clear();
         }
     }
-    
+
     @Override
     public void update()
     {
@@ -109,7 +103,7 @@ public class OSAPI implements ILuaAPI
         {
             // Update the clock
             m_clock++;
-            
+
             // Countdown all of our active timers
             Iterator<Map.Entry<Integer, Timer>> it = m_timers.entrySet().iterator();
             while( it.hasNext() )
@@ -125,15 +119,15 @@ public class OSAPI implements ILuaAPI
                 }
             }
         }
-        
+
         // Wait for all of our alarms
         synchronized( m_alarms )
         {
             double previousTime = m_time;
             int previousDay = m_day;
             double time = m_apiEnvironment.getComputerEnvironment().getTimeOfDay();
-            int day =  m_apiEnvironment.getComputerEnvironment().getDay();
-            
+            int day = m_apiEnvironment.getComputerEnvironment().getDay();
+
             if( time > previousTime || day > previousDay )
             {
                 double now = m_day * 24.0 + m_time;
@@ -145,7 +139,7 @@ public class OSAPI implements ILuaAPI
                     double t = alarm.m_day * 24.0 + alarm.m_time;
                     if( now >= t )
                     {
-                        queueLuaEvent( "alarm", new Object[]{ entry.getKey() } );
+                        queueLuaEvent( "alarm", new Object[] { entry.getKey() } );
                         it.remove();
                     }
                 }
@@ -155,15 +149,15 @@ public class OSAPI implements ILuaAPI
             m_day = day;
         }
     }
-    
+
     @Override
-    public void shutdown( )
+    public void shutdown()
     {
         synchronized( m_timers )
         {
             m_timers.clear();
         }
-        
+
         synchronized( m_alarms )
         {
             m_alarms.clear();
@@ -194,28 +188,28 @@ public class OSAPI implements ILuaAPI
         };
     }
 
-    private float getTimeForCalendar(Calendar c)
+    private float getTimeForCalendar( Calendar c )
     {
-        float time = c.get(Calendar.HOUR_OF_DAY);
-        time += c.get(Calendar.MINUTE) / 60.0f;
-        time += c.get(Calendar.SECOND) / (60.0f * 60.0f);
+        float time = c.get( Calendar.HOUR_OF_DAY );
+        time += c.get( Calendar.MINUTE ) / 60.0f;
+        time += c.get( Calendar.SECOND ) / (60.0f * 60.0f);
         return time;
     }
 
-    private int getDayForCalendar(Calendar c)
+    private int getDayForCalendar( Calendar c )
     {
-        GregorianCalendar g = (c instanceof GregorianCalendar) ? (GregorianCalendar)c : new GregorianCalendar();
-        int year = c.get(Calendar.YEAR);
+        GregorianCalendar g = (c instanceof GregorianCalendar) ? (GregorianCalendar) c : new GregorianCalendar();
+        int year = c.get( Calendar.YEAR );
         int day = 0;
-        for( int y=1970; y<year; ++y )
+        for( int y = 1970; y < year; y++ )
         {
-            day += g.isLeapYear(y) ? 366 : 365;
+            day += g.isLeapYear( y ) ? 366 : 365;
         }
-        day += c.get(Calendar.DAY_OF_YEAR);
+        day += c.get( Calendar.DAY_OF_YEAR );
         return day;
     }
 
-    private long getEpochForCalendar(Calendar c)
+    private long getEpochForCalendar( Calendar c )
     {
         return c.getTime().getTime();
     }
@@ -237,7 +231,7 @@ public class OSAPI implements ILuaAPI
                 double timer = getReal( args, 0 );
                 synchronized( m_timers )
                 {
-                    m_timers.put( m_nextTimerToken, new Timer( (int)Math.round( timer / 0.05 ) ) );
+                    m_timers.put( m_nextTimerToken, new Timer( (int) Math.round( timer / 0.05 ) ) );
                     return new Object[] { m_nextTimerToken++ };
                 }
             }
@@ -248,7 +242,7 @@ public class OSAPI implements ILuaAPI
                 if( time < 0.0 || time >= 24.0 )
                 {
                     throw new LuaException( "Number out of range" );
-                }                
+                }
                 synchronized( m_alarms )
                 {
                     int day = (time > m_time) ? m_day : (m_day + 1);
@@ -425,12 +419,12 @@ public class OSAPI implements ILuaAPI
     {
         m_apiEnvironment.queueEvent( event, args );
     }
-    
+
     private Object[] trimArray( Object[] array, int skip )
     {
         return Arrays.copyOfRange( array, skip, array.length );
     }
-    
+
     private int getComputerID()
     {
         return m_apiEnvironment.getComputerID();

src/main/java/dan200/computercraft/core/apis/PeripheralAPI.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
@@ -40,19 +40,21 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
 
         public PeripheralWrapper( IPeripheral peripheral, String side )
         {
-            super(m_environment);
+            super( m_environment );
             m_side = side;
             m_peripheral = peripheral;
             m_attached = false;
 
             m_type = peripheral.getType();
             m_methods = peripheral.getMethodNames();
-            assert( m_type != null );
-            assert( m_methods != null );
+            assert (m_type != null);
+            assert (m_methods != null);
 
             m_methodMap = new HashMap<>();
-            for(int i=0; i<m_methods.length; ++i ) {
-                if( m_methods[i] != null ) {
+            for( int i = 0; i < m_methods.length; i++ )
+            {
+                if( m_methods[i] != null )
+                {
                     m_methodMap.put( m_methods[i], i );
                 }
             }
@@ -235,7 +237,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
         m_environment.setPeripheralChangeListener( this );
 
         m_peripherals = new PeripheralWrapper[6];
-        for(int i=0; i<6; ++i)
+        for( int i = 0; i < 6; i++ )
         {
             m_peripherals[i] = null;
         }
@@ -254,21 +256,26 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
             {
                 // Queue a detachment
                 final PeripheralWrapper wrapper = m_peripherals[side];
-                ComputerThread.queueTask(new ITask() {
+                ComputerThread.queueTask( new ITask()
+                {
                     @Override
-                    public Computer getOwner() {
+                    public Computer getOwner()
+                    {
                         return m_environment.getComputer();
                     }
 
                     @Override
-                    public void execute() {
-                        synchronized (m_peripherals) {
-                            if (wrapper.isAttached()) {
+                    public void execute()
+                    {
+                        synchronized( m_peripherals )
+                        {
+                            if( wrapper.isAttached() )
+                            {
                                 wrapper.detach();
                             }
                         }
                     }
-                }, null);
+                }, null );
 
                 // Queue a detachment event
                 m_environment.queueEvent( "peripheral_detach", new Object[] { Computer.s_sideNames[side] } );
@@ -288,14 +295,17 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
             {
                 // Queue an attachment
                 final PeripheralWrapper wrapper = m_peripherals[side];
-                ComputerThread.queueTask( new ITask() {
+                ComputerThread.queueTask( new ITask()
+                {
                     @Override
-                    public Computer getOwner() {
+                    public Computer getOwner()
+                    {
                         return m_environment.getComputer();
                     }
 
                     @Override
-                    public void execute() {
+                    public void execute()
+                    {
                         synchronized( m_peripherals )
                         {
                             if( m_running && !wrapper.isAttached() )
@@ -323,12 +333,12 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
     }
 
     @Override
-    public void startup( )
+    public void startup()
     {
         synchronized( m_peripherals )
         {
             m_running = true;
-            for( int i=0; i<6; ++i )
+            for( int i = 0; i < 6; i++ )
             {
                 PeripheralWrapper wrapper = m_peripherals[i];
                 if( wrapper != null && !wrapper.isAttached() )
@@ -340,12 +350,12 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
     }
 
     @Override
-    public void shutdown( )
+    public void shutdown()
     {
         synchronized( m_peripherals )
         {
             m_running = false;
-            for( int i=0; i<6; ++i )
+            for( int i = 0; i < 6; i++ )
             {
                 PeripheralWrapper wrapper = m_peripherals[i];
                 if( wrapper != null && wrapper.isAttached() )
@@ -382,7 +392,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
                 {
                     synchronized( m_peripherals )
                     {
-                        PeripheralWrapper p = m_peripherals[ side ];
+                        PeripheralWrapper p = m_peripherals[side];
                         if( p != null )
                         {
                             present = true;
@@ -400,7 +410,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
                 {
                     synchronized( m_peripherals )
                     {
-                        PeripheralWrapper p = m_peripherals[ side ];
+                        PeripheralWrapper p = m_peripherals[side];
                         if( p != null )
                         {
                             type = p.getType();
@@ -422,7 +432,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
                 {
                     synchronized( m_peripherals )
                     {
-                        PeripheralWrapper p = m_peripherals[ side ];
+                        PeripheralWrapper p = m_peripherals[side];
                         if( p != null )
                         {
                             methods = p.getMethods();
@@ -431,9 +441,10 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
                 }
                 if( methods != null )
                 {
-                    Map<Object,Object> table = new HashMap<>();
-                    for(int i=0; i<methods.length; ++i ) {
-                        table.put( i+1, methods[i] );
+                    Map<Object, Object> table = new HashMap<>();
+                    for( int i = 0; i < methods.length; i++ )
+                    {
+                        table.put( i + 1, methods[i] );
                     }
                     return new Object[] { table };
                 }
@@ -451,7 +462,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
                     PeripheralWrapper p;
                     synchronized( m_peripherals )
                     {
-                        p = m_peripherals[ side ];
+                        p = m_peripherals[side];
                     }
                     if( p != null )
                     {
@@ -472,7 +483,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
     private int parseSide( Object[] args ) throws LuaException
     {
         String side = getString( args, 0 );
-        for( int n=0; n<Computer.s_sideNames.length; ++n )
+        for( int n = 0; n < Computer.s_sideNames.length; n++ )
         {
             if( side.equals( Computer.s_sideNames[n] ) )
             {

src/main/java/dan200/computercraft/core/apis/RedstoneAPI.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
@@ -25,7 +25,7 @@ public class RedstoneAPI implements ILuaAPI
     {
         m_environment = environment;
     }
-    
+
     @Override
     public String[] getNames()
     {
@@ -64,10 +64,10 @@ public class RedstoneAPI implements ILuaAPI
             case 0:
             {
                 // getSides
-                Map<Object,Object> table = new HashMap<>();
-                for(int i=0; i< Computer.s_sideNames.length; ++i )
+                Map<Object, Object> table = new HashMap<>();
+                for( int i = 0; i < Computer.s_sideNames.length; i++ )
                 {
-                    table.put( i+1, Computer.s_sideNames[i] );
+                    table.put( i + 1, Computer.s_sideNames[i] );
                 }
                 return new Object[] { table };
             }
@@ -152,11 +152,11 @@ public class RedstoneAPI implements ILuaAPI
             }
         }
     }
-    
+
     private int parseSide( Object[] args ) throws LuaException
     {
         String side = getString( args, 0 );
-        for( int n=0; n<Computer.s_sideNames.length; ++n )
+        for( int n = 0; n < Computer.s_sideNames.length; n++ )
         {
             if( side.equals( Computer.s_sideNames[n] ) )
             {

src/main/java/dan200/computercraft/core/apis/TableHelper.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.core.apis;
 
 import dan200.computercraft.api.lua.LuaException;

src/main/java/dan200/computercraft/core/apis/TermAPI.java

@@ -1,6 +1,6 @@
 /*
  * This file is part of ComputerCraft - http://www.computercraft.info
- * Copyright Daniel Ratcliffe, 2011-2017. Do not distribute without permission.
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
  * Send enquiries to dratcliffe@gmail.com
  */
 
@@ -28,7 +28,7 @@ public class TermAPI implements ILuaAPI
         m_terminal = _environment.getTerminal();
         m_environment = _environment.getComputerEnvironment();
     }
-    
+
     @Override
     public String[] getNames()
     {
@@ -68,7 +68,7 @@ public class TermAPI implements ILuaAPI
             "getCursorBlink",
         };
     }
-    
+
     public static int parseColour( Object[] args ) throws LuaException
     {
         int colour = getInt( args, 0 );
@@ -109,12 +109,15 @@ public class TermAPI implements ILuaAPI
             {
                 // write
                 String text;
-                if( args.length > 0 && args[0] != null ) {
+                if( args.length > 0 && args[0] != null )
+                {
                     text = args[0].toString();
-                } else {
+                }
+                else
+                {
                     text = "";
                 }
-                
+
                 synchronized( m_terminal )
                 {
                     m_terminal.write( text );
@@ -128,7 +131,7 @@ public class TermAPI implements ILuaAPI
                 int y = getInt( args, 0 );
                 synchronized( m_terminal )
                 {
-                    m_terminal.scroll(y);
+                    m_terminal.scroll( y );
                 }
                 return null;
             }
@@ -172,7 +175,7 @@ public class TermAPI implements ILuaAPI
                 {
                     width = m_terminal.getWidth();
                     height = m_terminal.getHeight();
-                }                
+                }
                 return new Object[] { width, height };
             }
             case 6:
@@ -260,7 +263,7 @@ public class TermAPI implements ILuaAPI
                 {
                     int hex = getInt( args, 1 );
                     double[] rgb = Palette.decodeRGB8( hex );
-                    setColour( m_terminal, colour, rgb[ 0 ], rgb[ 1 ], rgb[ 2 ] );
+                    setColour( m_terminal, colour, rgb[0], rgb[1], rgb[2] );
                 }
                 else
                 {
@@ -278,7 +281,7 @@ public class TermAPI implements ILuaAPI
                 int colour = 15 - parseColour( args );
                 synchronized( m_terminal )
                 {
-                    if ( m_terminal.getPalette() != null )
+                    if( m_terminal.getPalette() != null )
                     {
                         return ArrayUtils.toObject( m_terminal.getPalette().getColour( colour ) );
                     }
@@ -294,7 +297,7 @@ public class TermAPI implements ILuaAPI
             }
         }
     }
-    
+
     private static int getHighestBit( int group )
     {
         int bit = 0;

src/main/java/dan200/computercraft/core/apis/handles/ArrayByteChannel.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.core.apis.handles;
 
 import com.google.common.base.Preconditions;

src/main/java/dan200/computercraft/core/apis/handles/BinaryReadableHandle.java

@@ -1,3 +1,9 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2019. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+
 package dan200.computercraft.core.apis.handles;
 
 import com.google.common.collect.ObjectArrays;
@@ -53,12 +59,11 @@ public class BinaryReadableHandle extends HandleGeneric
     {
         switch( method )
         {
-            case 0:
-                // read
+            case 0: // read
                 checkOpen();
                 try
                 {
-                    if( args.length > 0 && args[ 0 ] != null )
+                    if( args.length > 0 && args[0] != null )
                     {
                         int count = getInt( args, 0 );
                         if( count < 0 )
@@ -73,38 +78,41 @@ public class BinaryReadableHandle extends HandleGeneric
                         if( count <= BUFFER_SIZE )
                         {
                             ByteBuffer buffer = ByteBuffer.allocate( count );
-                            
+
                             int read = m_reader.read( buffer );
                             if( read < 0 ) return null;
                             return new Object[] { read < count ? Arrays.copyOf( buffer.array(), read ) : buffer.array() };
                         }
                         else
                         {
+                            // Read the initial set of characters, failing if none are read.
                             ByteBuffer buffer = ByteBuffer.allocate( BUFFER_SIZE );
-
                             int read = m_reader.read( buffer );
                             if( read < 0 ) return null;
-                            int totalRead = read;
 
                             // If we failed to read "enough" here, let's just abort
-                            if( totalRead >= count || read < BUFFER_SIZE )
+                            if( read >= count || read < BUFFER_SIZE )
                             {
                                 return new Object[] { Arrays.copyOf( buffer.array(), read ) };
                             }
 
-                            // Build up an array of ByteBuffers. Hopefully this means we can perform less allocation 
+                            // Build up an array of ByteBuffers. Hopefully this means we can perform less allocation
                             // than doubling up the buffer each time.
+                            int totalRead = read;
                             List<ByteBuffer> parts = new ArrayList<>( 4 );
                             parts.add( buffer );
-                            while( totalRead < count && read >= BUFFER_SIZE )
+                            while( read >= BUFFER_SIZE && totalRead < count )
                             {
-                                buffer = ByteBuffer.allocate( BUFFER_SIZE );
-                                totalRead += read = m_reader.read( buffer );
+                                buffer = ByteBuffer.allocate( Math.min( BUFFER_SIZE, count - totalRead ) );
+                                read = m_reader.read( buffer );
+                                if( read < 0 ) break;
+
+                                totalRead += read;
                                 parts.add( buffer );
                             }
 
                             // Now just copy all the bytes across!
-                            byte[] bytes = new byte[ totalRead ];
+                            byte[] bytes = new byte[totalRead];
                             int pos = 0;
                             for( ByteBuffer part : parts )
                             {
@@ -125,8 +133,7 @@ public class BinaryReadableHandle extends HandleGeneric
                 {
                     return null;
                 }
-            case 1:
-                // readAll
+            case 1: // readAll
                 checkOpen();
                 try
                 {
@@ -154,9 +161,8 @@ public class BinaryReadableHandle extends HandleGeneric
                 {
                     return null;
                 }
-            case 2:
+            case 2: // readLine
             {
-                // readLine
                 checkOpen();
                 boolean withTrailing = optBoolean( args, 0, false );
                 try
@@ -190,12 +196,10 @@ public class BinaryReadableHandle extends HandleGeneric
                     return null;
                 }
             }
-            case 3:
-                //close
+            case 3: // close
                 close();
                 return null;
-            case 4:
-                // seek
+            case 4: // seek
                 checkOpen();
                 return handleSeek( m_seekable, args );
             default: