Merge branch 'mc-1.15.x' into mc-1.16.x

Well, strictly speaking some mapping changes.

build.gradle

@@ -106,10 +106,10 @@ dependencies {
 
     minecraft "net.minecraftforge:forge:${mc_version}-${forge_version}"
 
-    compileOnly fg.deobf("mezz.jei:jei-1.15.2:6.0.0.3:api")
-    compileOnly fg.deobf("com.blamejared.crafttweaker:CraftTweaker-1.15.2:6.0.0.9")
+    compileOnly fg.deobf("mezz.jei:jei-1.16.4:7.6.0.58:api")
+    compileOnly fg.deobf("com.blamejared.crafttweaker:CraftTweaker-1.16.4:7.0.0.63")
 
-    runtimeOnly fg.deobf("mezz.jei:jei-1.15.2:6.0.0.3")
+    runtimeOnly fg.deobf("mezz.jei:jei-1.16.4:7.6.0.58")
 
     compileOnly 'com.google.auto.service:auto-service:1.0-rc7'
     annotationProcessor 'com.google.auto.service:auto-service:1.0-rc7'

gradle.properties

@@ -2,6 +2,6 @@
 mod_version=1.95.1
 
 # Minecraft properties (update mods.toml when changing)
-mc_version=1.15.2
-forge_version=31.1.41
-mappings_version=20200429-1.15.1
+mc_version=1.16.4
+forge_version=35.0.1
+mappings_version=20201028-1.16.3

src/generated/resources/data/minecraft/tags/items/piglin_loved.json

@@ -0,0 +1,10 @@
+{
+  "replace": false,
+  "values": [
+    "computercraft:computer_advanced",
+    "computercraft:turtle_advanced",
+    "computercraft:wireless_modem_advanced",
+    "computercraft:pocket_computer_advanced",
+    "computercraft:monitor_advanced"
+  ]
+}

src/main/java/dan200/computercraft/ComputerCraftAPIImpl.java

@@ -54,7 +54,7 @@ public final class ComputerCraftAPIImpl implements IComputerCraftAPI
 
     public static InputStream getResourceFile( String domain, String subPath )
     {
-        IReloadableResourceManager manager = ServerLifecycleHooks.getCurrentServer().getResourceManager();
+        IReloadableResourceManager manager = (IReloadableResourceManager) ServerLifecycleHooks.getCurrentServer().getDataPackRegistries().getResourceManager();
         try
         {
             return manager.getResource( new ResourceLocation( domain, subPath ) ).getInputStream();
@@ -97,7 +97,7 @@ public final class ComputerCraftAPIImpl implements IComputerCraftAPI
     @Override
     public IMount createResourceMount( @Nonnull String domain, @Nonnull String subPath )
     {
-        IReloadableResourceManager manager = ServerLifecycleHooks.getCurrentServer().getResourceManager();
+        IReloadableResourceManager manager = (IReloadableResourceManager) ServerLifecycleHooks.getCurrentServer().getDataPackRegistries().getResourceManager();
         ResourceMount mount = ResourceMount.get( domain, subPath, manager );
         return mount.exists( "" ) ? mount : null;
     }

src/main/java/dan200/computercraft/api/client/TransformedModel.java

@@ -6,11 +6,11 @@
 package dan200.computercraft.api.client;
 
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.TransformationMatrix;
 import net.minecraft.client.renderer.model.IBakedModel;
 import net.minecraft.client.renderer.model.ModelManager;
 import net.minecraft.client.renderer.model.ModelResourceLocation;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.math.vector.TransformationMatrix;
 
 import javax.annotation.Nonnull;
 import java.util.Objects;

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

@@ -5,7 +5,7 @@
  */
 package dan200.computercraft.api.network;
 
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
@@ -29,7 +29,7 @@ public interface IPacketReceiver
      * @return The receiver's position.
      */
     @Nonnull
-    Vec3d getPosition();
+    Vector3d getPosition();
 
     /**
      * Get the maximum distance this receiver can send and receive messages.

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

@@ -5,7 +5,7 @@
  */
 package dan200.computercraft.api.network;
 
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
@@ -29,7 +29,7 @@ public interface IPacketSender
      * @return The sender's position.
      */
     @Nonnull
-    Vec3d getPosition();
+    Vector3d getPosition();
 
     /**
      * Get some sort of identification string for this sender. This does not strictly need to be unique, but you

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

@@ -13,7 +13,7 @@ import net.minecraft.inventory.IInventory;
 import net.minecraft.nbt.CompoundNBT;
 import net.minecraft.util.Direction;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 import net.minecraftforge.items.IItemHandlerModifiable;
 
@@ -67,7 +67,7 @@ public interface ITurtleAccess
      * @see #getVisualYaw(float)
      */
     @Nonnull
-    Vec3d getVisualPosition( float f );
+    Vector3d getVisualPosition( float f );
 
     /**
      * Returns the yaw the turtle is facing when it is rendered.

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

@@ -12,20 +12,18 @@ import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.FontRenderer;
 import net.minecraft.client.gui.NewChatGui;
-import net.minecraft.client.gui.RenderComponentsUtil;
 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;
-import java.util.List;
 
 public class ClientTableFormatter implements TableFormatter
 {
     public static final ClientTableFormatter INSTANCE = new ClientTableFormatter();
 
-    private static Int2IntOpenHashMap lastHeights = new Int2IntOpenHashMap();
+    private static final Int2IntOpenHashMap lastHeights = new Int2IntOpenHashMap();
 
     private static FontRenderer renderer()
     {
@@ -57,7 +55,7 @@ public class ClientTableFormatter implements TableFormatter
     @Override
     public int getWidth( ITextComponent component )
     {
-        return renderer().getStringWidth( component.getFormattedText() );
+        return renderer().getStringPropertyWidth( component );
     }
 
     @Override
@@ -66,10 +64,11 @@ public class ClientTableFormatter implements TableFormatter
         Minecraft mc = Minecraft.getInstance();
         NewChatGui chat = mc.ingameGUI.getChatGUI();
 
-        // Trim the text if it goes over the allowed length
-        int maxWidth = MathHelper.floor( chat.getChatWidth() / chat.getScale() );
-        List<ITextComponent> list = RenderComponentsUtil.splitText( component, maxWidth, mc.fontRenderer, false, false );
-        if( !list.isEmpty() ) chat.printChatMessageWithOptionalDeletion( list.get( 0 ), id );
+        // TODO: Trim the text if it goes over the allowed length
+        // int maxWidth = MathHelper.floor( chat.getChatWidth() / chat.getScale() );
+        // List<ITextProperties> list = RenderComponentsUtil.func_238505_a_( component, maxWidth, mc.fontRenderer );
+        // if( !list.isEmpty() ) chat.printChatMessageWithOptionalDeletion( list.get( 0 ), id );
+        chat.printChatMessageWithOptionalDeletion( component, id );
     }
 
     @Override

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

@@ -13,10 +13,14 @@ import dan200.computercraft.core.terminal.TextBuffer;
 import dan200.computercraft.shared.util.Colour;
 import dan200.computercraft.shared.util.Palette;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.*;
+import net.minecraft.client.renderer.IRenderTypeBuffer;
+import net.minecraft.client.renderer.RenderState;
+import net.minecraft.client.renderer.RenderType;
 import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
 import net.minecraft.client.renderer.vertex.VertexFormat;
 import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.math.vector.Matrix4f;
+import net.minecraft.util.math.vector.TransformationMatrix;
 import org.lwjgl.opengl.GL11;
 
 import javax.annotation.Nonnull;

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

@@ -5,6 +5,7 @@
  */
 package dan200.computercraft.client.gui;
 
+import com.mojang.blaze3d.matrix.MatrixStack;
 import com.mojang.blaze3d.systems.RenderSystem;
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.client.gui.widgets.WidgetTerminal;
@@ -21,6 +22,8 @@ import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.util.text.ITextComponent;
 import org.lwjgl.glfw.GLFW;
 
+import javax.annotation.Nonnull;
+
 import static dan200.computercraft.client.render.ComputerBorderRenderer.BORDER;
 import static dan200.computercraft.client.render.ComputerBorderRenderer.MARGIN;
 
@@ -88,13 +91,13 @@ public final class GuiComputer<T extends ContainerComputerBase> extends Containe
         terminalWrapper = new WidgetWrapper( terminal, MARGIN + BORDER + guiLeft, MARGIN + BORDER + guiTop, termPxWidth, termPxHeight );
 
         children.add( terminalWrapper );
-        setFocused( terminalWrapper );
+        setListener( terminalWrapper );
     }
 
     @Override
-    public void removed()
+    public void onClose()
     {
-        super.removed();
+        super.onClose();
         children.remove( terminal );
         terminal = null;
         minecraft.keyboardListener.enableRepeatEvents( false );
@@ -111,16 +114,16 @@ public final class GuiComputer<T extends ContainerComputerBase> extends Containe
     public boolean keyPressed( int key, int scancode, int modifiers )
     {
         // Forward the tab key to the terminal, rather than moving between controls.
-        if( key == GLFW.GLFW_KEY_TAB && getFocused() != null && getFocused() == terminalWrapper )
+        if( key == GLFW.GLFW_KEY_TAB && getListener() != null && getListener() == terminalWrapper )
         {
-            return getFocused().keyPressed( key, scancode, modifiers );
+            return getListener().keyPressed( key, scancode, modifiers );
         }
 
         return super.keyPressed( key, scancode, modifiers );
     }
 
     @Override
-    public void drawGuiContainerBackgroundLayer( float partialTicks, int mouseX, int mouseY )
+    public void drawGuiContainerBackgroundLayer( @Nonnull MatrixStack stack, float partialTicks, int mouseX, int mouseY )
     {
         // Draw terminal
         terminal.draw( terminalWrapper.getX(), terminalWrapper.getY() );
@@ -135,17 +138,22 @@ public final class GuiComputer<T extends ContainerComputerBase> extends Containe
     }
 
     @Override
-    public void render( int mouseX, int mouseY, float partialTicks )
+    public void render( @Nonnull MatrixStack stack, int mouseX, int mouseY, float partialTicks )
     {
-        renderBackground();
-        super.render( mouseX, mouseY, partialTicks );
-        renderHoveredToolTip( mouseX, mouseY );
+        super.render( stack, mouseX, mouseY, partialTicks );
+        renderHoveredTooltip( stack, mouseX, mouseY );
     }
 
     @Override
     public boolean mouseDragged( double x, double y, int button, double deltaX, double deltaY )
     {
-        return (getFocused() != null && getFocused().mouseDragged( x, y, button, deltaX, deltaY ))
+        return (getListener() != null && getListener().mouseDragged( x, y, button, deltaX, deltaY ))
             || super.mouseDragged( x, y, button, deltaX, deltaY );
     }
+
+    @Override
+    protected void drawGuiContainerForegroundLayer( @Nonnull MatrixStack transform, int mouseX, int mouseY )
+    {
+        // Skip rendering labels.
+    }
 }

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

@@ -5,6 +5,7 @@
  */
 package dan200.computercraft.client.gui;
 
+import com.mojang.blaze3d.matrix.MatrixStack;
 import com.mojang.blaze3d.systems.RenderSystem;
 import dan200.computercraft.shared.peripheral.diskdrive.ContainerDiskDrive;
 import net.minecraft.client.gui.screen.inventory.ContainerScreen;
@@ -12,6 +13,8 @@ import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.text.ITextComponent;
 
+import javax.annotation.Nonnull;
+
 public class GuiDiskDrive extends ContainerScreen<ContainerDiskDrive>
 {
     private static final ResourceLocation BACKGROUND = new ResourceLocation( "computercraft", "textures/gui/disk_drive.png" );
@@ -22,26 +25,18 @@ public class GuiDiskDrive extends ContainerScreen<ContainerDiskDrive>
     }
 
     @Override
-    protected void drawGuiContainerForegroundLayer( int mouseX, int mouseY )
-    {
-        String title = this.title.getFormattedText();
-        font.drawString( title, (xSize - font.getStringWidth( title )) / 2.0f, 6, 0x404040 );
-        font.drawString( title, 8, ySize - 96 + 2, 0x404040 );
-    }
-
-    @Override
-    protected void drawGuiContainerBackgroundLayer( float partialTicks, int mouseX, int mouseY )
+    protected void drawGuiContainerBackgroundLayer( @Nonnull MatrixStack transform, float partialTicks, int mouseX, int mouseY )
     {
         RenderSystem.color4f( 1.0F, 1.0F, 1.0F, 1.0F );
         minecraft.getTextureManager().bindTexture( BACKGROUND );
-        blit( guiLeft, guiTop, 0, 0, xSize, ySize );
+        blit( transform, guiLeft, guiTop, 0, 0, xSize, ySize );
     }
 
     @Override
-    public void render( int mouseX, int mouseY, float partialTicks )
+    public void render( @Nonnull MatrixStack transform, int mouseX, int mouseY, float partialTicks )
     {
-        renderBackground();
-        super.render( mouseX, mouseY, partialTicks );
-        renderHoveredToolTip( mouseX, mouseY );
+        renderBackground( transform );
+        super.render( transform, mouseX, mouseY, partialTicks );
+        renderHoveredTooltip( transform, mouseX, mouseY );
     }
 }

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

@@ -5,14 +5,16 @@
  */
 package dan200.computercraft.client.gui;
 
+import com.mojang.blaze3d.matrix.MatrixStack;
 import com.mojang.blaze3d.systems.RenderSystem;
 import dan200.computercraft.shared.peripheral.printer.ContainerPrinter;
 import net.minecraft.client.gui.screen.inventory.ContainerScreen;
-import net.minecraft.client.resources.I18n;
 import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.text.ITextComponent;
 
+import javax.annotation.Nonnull;
+
 public class GuiPrinter extends ContainerScreen<ContainerPrinter>
 {
     private static final ResourceLocation BACKGROUND = new ResourceLocation( "computercraft", "textures/gui/printer.png" );
@@ -22,29 +24,29 @@ public class GuiPrinter extends ContainerScreen<ContainerPrinter>
         super( container, player, title );
     }
 
-    @Override
+    /*@Override
     protected void drawGuiContainerForegroundLayer( int mouseX, int mouseY )
     {
         String title = getTitle().getFormattedText();
         font.drawString( title, (xSize - font.getStringWidth( title )) / 2.0f, 6, 0x404040 );
         font.drawString( I18n.format( "container.inventory" ), 8, ySize - 96 + 2, 0x404040 );
-    }
+    }*/
 
     @Override
-    protected void drawGuiContainerBackgroundLayer( float partialTicks, int mouseX, int mouseY )
+    protected void drawGuiContainerBackgroundLayer( @Nonnull MatrixStack transform, float partialTicks, int mouseX, int mouseY )
     {
         RenderSystem.color4f( 1.0F, 1.0F, 1.0F, 1.0F );
         minecraft.getTextureManager().bindTexture( BACKGROUND );
-        blit( guiLeft, guiTop, 0, 0, xSize, ySize );
+        blit( transform, guiLeft, guiTop, 0, 0, xSize, ySize );
 
-        if( getContainer().isPrinting() ) blit( guiLeft + 34, guiTop + 21, 176, 0, 25, 45 );
+        if( getContainer().isPrinting() ) blit( transform, guiLeft + 34, guiTop + 21, 176, 0, 25, 45 );
     }
 
     @Override
-    public void render( int mouseX, int mouseY, float partialTicks )
+    public void render( @Nonnull MatrixStack stack, int mouseX, int mouseY, float partialTicks )
     {
-        renderBackground();
-        super.render( mouseX, mouseY, partialTicks );
-        renderHoveredToolTip( mouseX, mouseY );
+        renderBackground( stack );
+        super.render( stack, mouseX, mouseY, partialTicks );
+        renderHoveredTooltip( stack, mouseX, mouseY );
     }
 }

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

@@ -5,6 +5,7 @@
  */
 package dan200.computercraft.client.gui;
 
+import com.mojang.blaze3d.matrix.MatrixStack;
 import com.mojang.blaze3d.systems.RenderSystem;
 import dan200.computercraft.core.terminal.TextBuffer;
 import dan200.computercraft.shared.common.ContainerHeldItem;
@@ -12,18 +13,17 @@ import dan200.computercraft.shared.media.items.ItemPrintout;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.screen.inventory.ContainerScreen;
 import net.minecraft.client.renderer.IRenderTypeBuffer;
-import net.minecraft.client.renderer.Matrix4f;
-import net.minecraft.client.renderer.TransformationMatrix;
 import net.minecraft.entity.player.PlayerInventory;
+import net.minecraft.util.math.vector.Matrix4f;
 import net.minecraft.util.text.ITextComponent;
 import org.lwjgl.glfw.GLFW;
 
+import javax.annotation.Nonnull;
+
 import static dan200.computercraft.client.render.PrintoutRenderer.*;
 
 public class GuiPrintout extends ContainerScreen<ContainerHeldItem>
 {
-    private static final Matrix4f IDENTITY = TransformationMatrix.identity().getMatrix();
-
     private final boolean m_book;
     private final int m_pages;
     private final TextBuffer[] m_text;
@@ -91,27 +91,33 @@ public class GuiPrintout extends ContainerScreen<ContainerHeldItem>
     }
 
     @Override
-    public void drawGuiContainerBackgroundLayer( float partialTicks, int mouseX, int mouseY )
+    protected void drawGuiContainerBackgroundLayer( @Nonnull MatrixStack transform, float partialTicks, int mouseX, int mouseY )
     {
         // Draw the printout
         RenderSystem.color4f( 1.0f, 1.0f, 1.0f, 1.0f );
         RenderSystem.enableDepthTest();
 
         IRenderTypeBuffer.Impl renderer = Minecraft.getInstance().getRenderTypeBuffers().getBufferSource();
-        drawBorder( IDENTITY, renderer, guiLeft, guiTop, getBlitOffset(), m_page, m_pages, m_book );
-        drawText( IDENTITY, renderer, guiLeft + X_TEXT_MARGIN, guiTop + Y_TEXT_MARGIN, ItemPrintout.LINES_PER_PAGE * m_page, m_text, m_colours );
+        Matrix4f matrix = transform.getLast().getMatrix();
+        drawBorder( matrix, renderer, guiLeft, guiTop, getBlitOffset(), m_page, m_pages, m_book );
+        drawText( matrix, renderer, guiLeft + X_TEXT_MARGIN, guiTop + Y_TEXT_MARGIN, ItemPrintout.LINES_PER_PAGE * m_page, m_text, m_colours );
         renderer.finish();
     }
 
     @Override
-    public void render( int mouseX, int mouseY, float partialTicks )
+    public void render( @Nonnull MatrixStack stack, int mouseX, int mouseY, float partialTicks )
     {
         // We must take the background further back in order to not overlap with our printed pages.
         setBlitOffset( getBlitOffset() - 1 );
-        renderBackground();
+        renderBackground( stack );
         setBlitOffset( getBlitOffset() + 1 );
 
-        super.render( mouseX, mouseY, partialTicks );
-        renderHoveredToolTip( mouseX, mouseY );
+        super.render( stack, mouseX, mouseY, partialTicks );
+    }
+
+    @Override
+    protected void drawGuiContainerForegroundLayer( @Nonnull MatrixStack transform, int mouseX, int mouseY )
+    {
+        // Skip rendering labels.
     }
 }

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

@@ -5,6 +5,7 @@
  */
 package dan200.computercraft.client.gui;
 
+import com.mojang.blaze3d.matrix.MatrixStack;
 import com.mojang.blaze3d.systems.RenderSystem;
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.client.gui.widgets.WidgetTerminal;
@@ -18,6 +19,8 @@ import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.text.ITextComponent;
 import org.lwjgl.glfw.GLFW;
 
+import javax.annotation.Nonnull;
+
 public class GuiTurtle extends ContainerScreen<ContainerTurtle>
 {
     private static final ResourceLocation BACKGROUND_NORMAL = new ResourceLocation( "computercraft", "textures/gui/turtle_normal.png" );
@@ -61,13 +64,13 @@ public class GuiTurtle extends ContainerScreen<ContainerTurtle>
         terminalWrapper = new WidgetWrapper( terminal, 2 + 8 + guiLeft, 2 + 8 + guiTop, termPxWidth, termPxHeight );
 
         children.add( terminalWrapper );
-        setFocused( terminalWrapper );
+        setListener( terminalWrapper );
     }
 
     @Override
-    public void removed()
+    public void onClose()
     {
-        super.removed();
+        super.onClose();
         children.remove( terminal );
         terminal = null;
         minecraft.keyboardListener.enableRepeatEvents( false );
@@ -84,55 +87,58 @@ public class GuiTurtle extends ContainerScreen<ContainerTurtle>
     public boolean keyPressed( int key, int scancode, int modifiers )
     {
         // Forward the tab key to the terminal, rather than moving between controls.
-        if( key == GLFW.GLFW_KEY_TAB && getFocused() != null && getFocused() == terminalWrapper )
+        if( key == GLFW.GLFW_KEY_TAB && getListener() != null && getListener() == terminalWrapper )
         {
-            return getFocused().keyPressed( key, scancode, modifiers );
+            return getListener().keyPressed( key, scancode, modifiers );
         }
 
         return super.keyPressed( key, scancode, modifiers );
     }
 
-    private void drawSelectionSlot( boolean advanced )
-    {
-        // Draw selection slot
-        int slot = m_container.getSelectedSlot();
-        if( slot >= 0 )
-        {
-            RenderSystem.color4f( 1.0F, 1.0F, 1.0F, 1.0F );
-            int slotX = slot % 4;
-            int slotY = slot / 4;
-            minecraft.getTextureManager().bindTexture( advanced ? BACKGROUND_ADVANCED : BACKGROUND_NORMAL );
-            blit( guiLeft + ContainerTurtle.TURTLE_START_X - 2 + slotX * 18, guiTop + ContainerTurtle.PLAYER_START_Y - 2 + slotY * 18, 0, 217, 24, 24 );
-        }
-    }
-
     @Override
-    protected void drawGuiContainerBackgroundLayer( float partialTicks, int mouseX, int mouseY )
+    protected void drawGuiContainerBackgroundLayer( @Nonnull MatrixStack transform, float partialTicks, int mouseX, int mouseY )
     {
         // Draw term
-        boolean advanced = m_family == ComputerFamily.ADVANCED;
+        ResourceLocation texture = m_family == ComputerFamily.ADVANCED ? BACKGROUND_ADVANCED : BACKGROUND_NORMAL;
         terminal.draw( terminalWrapper.getX(), terminalWrapper.getY() );
 
         // Draw border/inventory
         RenderSystem.color4f( 1.0F, 1.0F, 1.0F, 1.0F );
-        minecraft.getTextureManager().bindTexture( advanced ? BACKGROUND_ADVANCED : BACKGROUND_NORMAL );
-        blit( guiLeft, guiTop, 0, 0, xSize, ySize );
+        minecraft.getTextureManager().bindTexture( texture );
+        blit( transform, guiLeft, guiTop, 0, 0, xSize, ySize );
 
-        drawSelectionSlot( advanced );
+        // Draw selection slot
+        int slot = m_container.getSelectedSlot();
+        if( slot >= 0 )
+        {
+            int slotX = slot % 4;
+            int slotY = slot / 4;
+            blit( transform,
+                guiLeft + ContainerTurtle.TURTLE_START_X - 2 + slotX * 18,
+                guiTop + ContainerTurtle.PLAYER_START_Y - 2 + slotY * 18,
+                0, 217, 24, 24
+            );
+        }
     }
 
     @Override
-    public void render( int mouseX, int mouseY, float partialTicks )
+    public void render( @Nonnull MatrixStack stack, int mouseX, int mouseY, float partialTicks )
     {
-        renderBackground();
-        super.render( mouseX, mouseY, partialTicks );
-        renderHoveredToolTip( mouseX, mouseY );
+        renderBackground( stack );
+        super.render( stack, mouseX, mouseY, partialTicks );
+        renderHoveredTooltip( stack, mouseX, mouseY );
     }
 
     @Override
     public boolean mouseDragged( double x, double y, int button, double deltaX, double deltaY )
     {
-        return (getFocused() != null && getFocused().mouseDragged( x, y, button, deltaX, deltaY ))
+        return (getListener() != null && getListener().mouseDragged( x, y, button, deltaX, deltaY ))
             || super.mouseDragged( x, y, button, deltaX, deltaY );
     }
+
+    @Override
+    protected void drawGuiContainerForegroundLayer( @Nonnull MatrixStack transform, int mouseX, int mouseY )
+    {
+        // Skip rendering labels.
+    }
 }

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

@@ -11,13 +11,19 @@ import dan200.computercraft.client.render.TileEntityMonitorRenderer;
 import dan200.computercraft.client.render.TileEntityTurtleRenderer;
 import dan200.computercraft.client.render.TurtlePlayerRenderer;
 import dan200.computercraft.shared.Registry;
+import dan200.computercraft.shared.common.IColouredItem;
 import dan200.computercraft.shared.computer.inventory.ContainerComputer;
 import dan200.computercraft.shared.computer.inventory.ContainerViewComputer;
 import dan200.computercraft.shared.peripheral.monitor.ClientMonitor;
 import dan200.computercraft.shared.pocket.inventory.ContainerPocketComputer;
+import dan200.computercraft.shared.pocket.items.ItemPocketComputer;
 import net.minecraft.client.gui.ScreenManager;
 import net.minecraft.client.renderer.RenderType;
 import net.minecraft.client.renderer.RenderTypeLookup;
+import net.minecraft.item.IItemPropertyGetter;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemModelsProperties;
+import net.minecraft.util.ResourceLocation;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.event.world.WorldEvent;
 import net.minecraftforge.eventbus.api.SubscribeEvent;
@@ -26,6 +32,8 @@ import net.minecraftforge.fml.client.registry.RenderingRegistry;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.event.lifecycle.FMLClientSetupEvent;
 
+import java.util.function.Supplier;
+
 @Mod.EventBusSubscriber( modid = ComputerCraft.MOD_ID, value = Dist.CLIENT, bus = Mod.EventBusSubscriber.Bus.MOD )
 public final class ComputerCraftProxyClient
 {
@@ -49,6 +57,25 @@ public final class ComputerCraftProxyClient
         ClientRegistry.bindTileEntityRenderer( Registry.ModTiles.TURTLE_ADVANCED.get(), TileEntityTurtleRenderer::new );
 
         RenderingRegistry.registerEntityRenderingHandler( Registry.ModEntities.TURTLE_PLAYER.get(), TurtlePlayerRenderer::new );
+
+        registerItemProperty( "state",
+            ( stack, world, player ) -> ItemPocketComputer.getState( stack ).ordinal(),
+            Registry.ModItems.POCKET_COMPUTER_NORMAL, Registry.ModItems.POCKET_COMPUTER_ADVANCED
+        );
+        registerItemProperty( "state",
+            ( stack, world, player ) -> IColouredItem.getColourBasic( stack ) != -1 ? 1 : 0,
+            Registry.ModItems.POCKET_COMPUTER_NORMAL, Registry.ModItems.POCKET_COMPUTER_ADVANCED
+        );
+    }
+
+    @SafeVarargs
+    private static void registerItemProperty( String name, IItemPropertyGetter getter, Supplier<? extends Item>... items )
+    {
+        ResourceLocation id = new ResourceLocation( ComputerCraft.MOD_ID, name );
+        for( Supplier<? extends Item> item : items )
+        {
+            ItemModelsProperties.registerProperty( item.get(), id, getter );
+        }
     }
 
     private static void registerContainers()

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

@@ -14,14 +14,14 @@ import dan200.computercraft.shared.peripheral.modem.wired.CableShapes;
 import dan200.computercraft.shared.util.WorldUtil;
 import net.minecraft.block.BlockState;
 import net.minecraft.client.renderer.ActiveRenderInfo;
-import net.minecraft.client.renderer.Matrix4f;
 import net.minecraft.client.renderer.RenderType;
 import net.minecraft.client.renderer.WorldRenderer;
 import net.minecraft.entity.Entity;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.BlockRayTraceResult;
-import net.minecraft.util.math.Vec3d;
 import net.minecraft.util.math.shapes.VoxelShape;
+import net.minecraft.util.math.vector.Matrix4f;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.client.event.DrawHighlightEvent;
@@ -63,7 +63,7 @@ public final class CableHighlightRenderer
             ? CableShapes.getModemShape( state )
             : CableShapes.getCableShape( state );
 
-        Vec3d cameraPos = info.getProjectedView();
+        Vector3d cameraPos = info.getProjectedView();
         double xOffset = pos.getX() - cameraPos.getX();
         double yOffset = pos.getY() - cameraPos.getY();
         double zOffset = pos.getZ() - cameraPos.getZ();

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

@@ -10,10 +10,10 @@ import com.mojang.blaze3d.vertex.IVertexBuilder;
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.shared.computer.core.ComputerFamily;
 import net.minecraft.client.renderer.BufferBuilder;
-import net.minecraft.client.renderer.Matrix4f;
 import net.minecraft.client.renderer.Tessellator;
 import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
 import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.math.vector.Matrix4f;
 import org.lwjgl.opengl.GL11;
 
 import javax.annotation.Nonnull;

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

@@ -10,12 +10,12 @@ import net.minecraft.client.Minecraft;
 import net.minecraft.client.entity.player.AbstractClientPlayerEntity;
 import net.minecraft.client.renderer.FirstPersonRenderer;
 import net.minecraft.client.renderer.IRenderTypeBuffer;
-import net.minecraft.client.renderer.Vector3f;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.Hand;
 import net.minecraft.util.HandSide;
 import net.minecraft.util.math.MathHelper;
+import net.minecraft.util.math.vector.Vector3f;
 
 public abstract class ItemMapLikeRenderer
 {

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

@@ -15,9 +15,13 @@ import dan200.computercraft.shared.computer.core.ComputerFamily;
 import dan200.computercraft.shared.pocket.items.ItemPocketComputer;
 import dan200.computercraft.shared.util.Colour;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.*;
+import net.minecraft.client.renderer.BufferBuilder;
+import net.minecraft.client.renderer.IRenderTypeBuffer;
+import net.minecraft.client.renderer.Tessellator;
 import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.math.vector.Matrix4f;
+import net.minecraft.util.math.vector.Vector3f;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.client.event.RenderHandEvent;
 import net.minecraftforge.eventbus.api.SubscribeEvent;

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

@@ -9,9 +9,9 @@ import com.mojang.blaze3d.matrix.MatrixStack;
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.shared.media.items.ItemPrintout;
 import net.minecraft.client.renderer.IRenderTypeBuffer;
-import net.minecraft.client.renderer.Matrix4f;
-import net.minecraft.client.renderer.Vector3f;
 import net.minecraft.item.ItemStack;
+import net.minecraft.util.math.vector.Matrix4f;
+import net.minecraft.util.math.vector.Vector3f;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.client.event.RenderHandEvent;
 import net.minecraftforge.client.event.RenderItemInFrameEvent;

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

@@ -9,12 +9,12 @@ import com.mojang.blaze3d.matrix.MatrixStack;
 import com.mojang.blaze3d.vertex.IVertexBuilder;
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.shared.peripheral.monitor.TileMonitor;
-import net.minecraft.client.renderer.Matrix4f;
 import net.minecraft.client.renderer.RenderType;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.Direction;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Matrix4f;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.client.event.DrawHighlightEvent;
@@ -61,7 +61,7 @@ public final class MonitorHighlightRenderer
         if( monitor.getYIndex() != monitor.getHeight() - 1 ) faces.remove( monitor.getDown() );
 
         MatrixStack transformStack = event.getMatrix();
-        Vec3d cameraPos = event.getInfo().getProjectedView();
+        Vector3d cameraPos = event.getInfo().getProjectedView();
         transformStack.push();
         transformStack.translate( pos.getX() - cameraPos.getX(), pos.getY() - cameraPos.getY(), pos.getZ() - cameraPos.getZ() );
 

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

@@ -11,8 +11,8 @@ import com.mojang.blaze3d.systems.RenderSystem;
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.client.gui.FixedWidthFontRenderer;
 import dan200.computercraft.shared.util.Palette;
-import net.minecraft.client.renderer.Matrix4f;
 import net.minecraft.client.renderer.texture.TextureUtil;
+import net.minecraft.util.math.vector.Matrix4f;
 import org.lwjgl.BufferUtils;
 import org.lwjgl.opengl.GL13;
 import org.lwjgl.opengl.GL20;

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

@@ -10,11 +10,11 @@ import dan200.computercraft.client.gui.FixedWidthFontRenderer;
 import dan200.computercraft.core.terminal.TextBuffer;
 import dan200.computercraft.shared.util.Palette;
 import net.minecraft.client.renderer.IRenderTypeBuffer;
-import net.minecraft.client.renderer.Matrix4f;
 import net.minecraft.client.renderer.RenderState;
 import net.minecraft.client.renderer.RenderType;
 import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
 import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.math.vector.Matrix4f;
 import org.lwjgl.opengl.GL11;
 
 import static dan200.computercraft.client.gui.FixedWidthFontRenderer.FONT_HEIGHT;

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

@@ -24,6 +24,9 @@ import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
 import net.minecraft.client.renderer.vertex.VertexBuffer;
 import net.minecraft.util.Direction;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.vector.Matrix4f;
+import net.minecraft.util.math.vector.TransformationMatrix;
+import net.minecraft.util.math.vector.Vector3f;
 import org.lwjgl.opengl.GL11;
 import org.lwjgl.opengl.GL13;
 import org.lwjgl.opengl.GL20;
@@ -141,6 +144,10 @@ public class TileEntityMonitorRenderer extends TileEntityRenderer<TileMonitor>
             (float) (xSize + 2 * TileMonitor.RENDER_MARGIN), (float) -(ySize + TileMonitor.RENDER_MARGIN * 2)
         );
 
+        // Force a flush of the blocker. WorldRenderer.updateCameraAndRender will "finish" all the built-in
+        // buffers before calling renderer.finish, which means the blocker isn't actually rendered at that point!
+        renderer.getBuffer( RenderType.getSolid() );
+
         transform.pop();
     }
 

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

@@ -19,8 +19,6 @@ import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.FontRenderer;
 import net.minecraft.client.renderer.Atlases;
 import net.minecraft.client.renderer.IRenderTypeBuffer;
-import net.minecraft.client.renderer.Matrix4f;
-import net.minecraft.client.renderer.Vector3f;
 import net.minecraft.client.renderer.model.BakedQuad;
 import net.minecraft.client.renderer.model.IBakedModel;
 import net.minecraft.client.renderer.model.ModelManager;
@@ -31,7 +29,9 @@ import net.minecraft.util.Direction;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.BlockRayTraceResult;
 import net.minecraft.util.math.RayTraceResult;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Matrix4f;
+import net.minecraft.util.math.vector.Vector3d;
+import net.minecraft.util.math.vector.Vector3f;
 import net.minecraftforge.client.model.data.EmptyModelData;
 
 import javax.annotation.Nonnull;
@@ -99,7 +99,7 @@ public class TileEntityTurtleRenderer extends TileEntityRenderer<TileTurtle>
         transform.push();
 
         // Setup the transform.
-        Vec3d offset = turtle.getRenderOffset( partialTicks );
+        Vector3d offset = turtle.getRenderOffset( partialTicks );
         float yaw = turtle.getRenderYaw( partialTicks );
         transform.translate( offset.x, offset.y, offset.z );
 

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

@@ -57,16 +57,16 @@ public final class TurtleModelLoader implements IModelLoader<TurtleModelLoader.T
         }
 
         @Override
-        public Collection<Material> getTextures( IModelConfiguration owner, Function<ResourceLocation, IUnbakedModel> modelGetter, Set<Pair<String, String>> missingTextureErrors )
+        public Collection<RenderMaterial> getTextures( IModelConfiguration owner, Function<ResourceLocation, IUnbakedModel> modelGetter, Set<Pair<String, String>> missingTextureErrors )
         {
-            Set<Material> materials = new HashSet<>();
+            Set<RenderMaterial> materials = new HashSet<>();
             materials.addAll( modelGetter.apply( family ).getTextures( modelGetter, missingTextureErrors ) );
             materials.addAll( modelGetter.apply( COLOUR_TURTLE_MODEL ).getTextures( modelGetter, missingTextureErrors ) );
             return materials;
         }
 
         @Override
-        public IBakedModel bake( IModelConfiguration owner, ModelBakery bakery, Function<Material, TextureAtlasSprite> spriteGetter, IModelTransform transform, ItemOverrideList overrides, ResourceLocation modelLocation )
+        public IBakedModel bake( IModelConfiguration owner, ModelBakery bakery, Function<RenderMaterial, TextureAtlasSprite> spriteGetter, IModelTransform transform, ItemOverrideList overrides, ResourceLocation modelLocation )
         {
             return new TurtleSmartItemModel(
                 bakery.getBakedModel( family, transform, spriteGetter ),

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

@@ -7,12 +7,12 @@ package dan200.computercraft.client.render;
 
 import dan200.computercraft.api.client.TransformedModel;
 import net.minecraft.block.BlockState;
-import net.minecraft.client.renderer.TransformationMatrix;
 import net.minecraft.client.renderer.model.BakedQuad;
 import net.minecraft.client.renderer.model.IBakedModel;
 import net.minecraft.client.renderer.model.ItemOverrideList;
 import net.minecraft.client.renderer.texture.TextureAtlasSprite;
 import net.minecraft.util.Direction;
+import net.minecraft.util.math.vector.TransformationMatrix;
 import net.minecraftforge.client.model.data.EmptyModelData;
 import net.minecraftforge.client.model.data.IModelData;
 import net.minecraftforge.client.model.pipeline.BakedQuadBuilder;
@@ -108,9 +108,9 @@ public class TurtleMultiModel implements IBakedModel
     }
 
     @Override
-    public boolean func_230044_c_()
+    public boolean isSideLit()
     {
-        return m_baseModel.func_230044_c_();
+        return m_baseModel.isSideLit();
     }
 
     @Nonnull

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

@@ -15,14 +15,14 @@ import dan200.computercraft.shared.util.Holiday;
 import dan200.computercraft.shared.util.HolidayUtil;
 import net.minecraft.block.BlockState;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.TransformationMatrix;
 import net.minecraft.client.renderer.model.*;
 import net.minecraft.client.renderer.texture.TextureAtlasSprite;
+import net.minecraft.client.world.ClientWorld;
 import net.minecraft.entity.LivingEntity;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.Direction;
 import net.minecraft.util.ResourceLocation;
-import net.minecraft.world.World;
+import net.minecraft.util.math.vector.TransformationMatrix;
 import net.minecraftforge.client.model.data.IModelData;
 
 import javax.annotation.Nonnull;
@@ -109,7 +109,7 @@ public class TurtleSmartItemModel implements IBakedModel
         {
             @Nonnull
             @Override
-            public IBakedModel getModelWithOverrides( @Nonnull IBakedModel originalModel, @Nonnull ItemStack stack, @Nullable World world, @Nullable LivingEntity entity )
+            public IBakedModel getOverrideModel( @Nonnull IBakedModel originalModel, @Nonnull ItemStack stack, @Nullable ClientWorld world, @Nullable LivingEntity entity )
             {
                 ItemTurtle turtle = (ItemTurtle) stack.getItem();
                 int colour = turtle.getColour( stack );
@@ -184,9 +184,9 @@ public class TurtleSmartItemModel implements IBakedModel
     }
 
     @Override
-    public boolean func_230044_c_()
+    public boolean isSideLit()
     {
-        return familyModel.func_230044_c_();
+        return familyModel.isSideLit();
     }
 
     @Nonnull

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

@@ -312,10 +312,10 @@ public class OSAPI implements ILuaAPI
      * always be in the range [0.0, 24.0).
      *
      * * If called with {@code ingame}, the current world time will be returned.
-     *   This is the default if nothing is passed.
+     * This is the default if nothing is passed.
      * * If called with {@code utc}, returns the hour of the day in UTC time.
      * * If called with {@code local}, returns the hour of the day in the
-     *   timezone the server is located in.
+     * timezone the server is located in.
      *
      * This function can also be called with a table returned from {@link #date},
      * which will convert the date fields into a UNIX timestamp (number of
@@ -323,9 +323,9 @@ public class OSAPI implements ILuaAPI
      *
      * @param args The locale of the time, or a table filled by {@code os.date("*t")} to decode. Defaults to {@code ingame} locale if not specified.
      * @return The hour of the selected locale, or a UNIX timestamp from the table, depending on the argument passed in.
+     * @throws LuaException If an invalid locale is passed.
      * @cc.tparam [opt] string|table locale The locale of the time, or a table filled by {@code os.date("*t")} to decode. Defaults to {@code ingame} locale if not specified.
      * @see #date To get a date table that can be converted with this function.
-     * @throws LuaException If an invalid locale is passed.
      */
     @LuaFunction
     public final Object time( IArguments args ) throws LuaException
@@ -351,11 +351,11 @@ public class OSAPI implements ILuaAPI
      * Returns the day depending on the locale specified.
      *
      * * If called with {@code ingame}, returns the number of days since the
-     *   world was created. This is the default.
+     * world was created. This is the default.
      * * If called with {@code utc}, returns the number of days since 1 January
-     *   1970 in the UTC timezone.
+     * 1970 in the UTC timezone.
      * * If called with {@code local}, returns the number of days since 1
-     *   January 1970 in the server's local timezone.
+     * January 1970 in the server's local timezone.
      *
      * @param args The locale to get the day for. Defaults to {@code ingame} if not set.
      * @return The day depending on the selected locale.
@@ -435,7 +435,7 @@ public class OSAPI implements ILuaAPI
      * timestamp (days since 1 January 1970) with {@link #date}.
      *
      * @param formatA The format of the string to return. This defaults to {@code %c}, which expands to a string similar to "Sat Dec 24 16:58:00 2011".
-     * @param timeA The time to convert to a string. This defaults to the current time.
+     * @param timeA   The time to convert to a string. This defaults to the current time.
      * @return The resulting format string.
      * @throws LuaException If an invalid format is passed.
      */

src/main/java/dan200/computercraft/data/BlockModelProvider.java

@@ -16,6 +16,7 @@ import net.minecraft.data.DataGenerator;
 import net.minecraft.util.Direction;
 import net.minecraft.util.ResourceLocation;
 import net.minecraftforge.client.model.generators.*;
+import net.minecraftforge.common.data.ExistingFileHelper;
 
 import javax.annotation.Nonnull;
 
@@ -94,7 +95,7 @@ public class BlockModelProvider extends BlockStateProvider
         VariantBlockStateBuilder builder = getVariantBuilder( block );
         for( MonitorEdgeState edge : BlockMonitor.STATE.getAllowedValues() )
         {
-            String suffix = edge == MonitorEdgeState.NONE ? "" : "_" + edge.getName();
+            String suffix = edge == MonitorEdgeState.NONE ? "" : "_" + edge.getString();
             ModelFile model = models().getBuilder( suffix( block, suffix ) );
 
             for( Direction facing : BlockMonitor.FACING.getAllowedValues() )

src/main/java/dan200/computercraft/data/Generators.java

@@ -22,7 +22,7 @@ public class Generators
         DataGenerator generator = event.getGenerator();
         generator.addProvider( new Recipes( generator ) );
         generator.addProvider( new LootTables( generator ) );
-        generator.addProvider( new Tags( generator ) );
+        generator.addProvider( new Tags( generator, event.getExistingFileHelper() ) );
         generator.addProvider( new BlockModelProvider( generator, event.getExistingFileHelper() ) );
     }
 }

src/main/java/dan200/computercraft/data/LootTableProvider.java

@@ -12,11 +12,11 @@ import dan200.computercraft.ComputerCraft;
 import net.minecraft.data.DataGenerator;
 import net.minecraft.data.DirectoryCache;
 import net.minecraft.data.IDataProvider;
+import net.minecraft.loot.LootParameterSets;
+import net.minecraft.loot.LootTable;
+import net.minecraft.loot.LootTableManager;
+import net.minecraft.loot.ValidationTracker;
 import net.minecraft.util.ResourceLocation;
-import net.minecraft.world.storage.loot.LootParameterSets;
-import net.minecraft.world.storage.loot.LootTable;
-import net.minecraft.world.storage.loot.LootTableManager;
-import net.minecraft.world.storage.loot.ValidationTracker;
 
 import javax.annotation.Nonnull;
 import java.io.IOException;
@@ -50,7 +50,7 @@ public abstract class LootTableProvider implements IDataProvider
             tables.put( id, table );
         } );
 
-        tables.forEach( ( key, value ) -> LootTableManager.func_227508_a_( validation, key, value ) );
+        tables.forEach( ( key, value ) -> LootTableManager.validateLootTable( validation, key, value ) );
 
         Multimap<String, String> problems = validation.getProblems();
         if( !problems.isEmpty() )

src/main/java/dan200/computercraft/data/LootTables.java

@@ -13,10 +13,10 @@ import dan200.computercraft.shared.data.PlayerCreativeLootCondition;
 import dan200.computercraft.shared.proxy.ComputerCraftProxyCommon;
 import net.minecraft.block.Block;
 import net.minecraft.data.DataGenerator;
+import net.minecraft.loot.*;
+import net.minecraft.loot.conditions.Alternative;
+import net.minecraft.loot.conditions.SurvivesExplosion;
 import net.minecraft.util.ResourceLocation;
-import net.minecraft.world.storage.loot.*;
-import net.minecraft.world.storage.loot.conditions.Alternative;
-import net.minecraft.world.storage.loot.conditions.SurvivesExplosion;
 import net.minecraftforge.fml.RegistryObject;
 
 import java.util.function.BiConsumer;
@@ -77,9 +77,9 @@ public class LootTables extends LootTableProvider
                 .rolls( ConstantRange.of( 1 ) )
                 .addEntry( DynamicLootEntry.func_216162_a( new ResourceLocation( ComputerCraft.MOD_ID, "computer" ) ) )
                 .acceptCondition( Alternative.builder(
-                    BlockNamedEntityLootCondition.builder(),
-                    HasComputerIdLootCondition.builder(),
-                    PlayerCreativeLootCondition.builder().inverted()
+                    BlockNamedEntityLootCondition.BUILDER,
+                    HasComputerIdLootCondition.BUILDER,
+                    PlayerCreativeLootCondition.BUILDER.inverted()
                 ) )
             ).build() );
     }

src/main/java/dan200/computercraft/data/Recipes.java

@@ -21,7 +21,7 @@ import net.minecraft.advancements.criterion.ItemPredicate;
 import net.minecraft.block.Blocks;
 import net.minecraft.data.*;
 import net.minecraft.item.*;
-import net.minecraft.tags.Tag;
+import net.minecraft.tags.ITag;
 import net.minecraft.util.IItemProvider;
 import net.minecraft.util.ResourceLocation;
 import net.minecraftforge.common.Tags;
@@ -309,7 +309,7 @@ public class Recipes extends RecipeProvider
         return DyeColor.byId( 15 - colour.ordinal() );
     }
 
-    private static InventoryChangeTrigger.Instance inventoryChange( Tag<Item> stack )
+    private static InventoryChangeTrigger.Instance inventoryChange( ITag<Item> stack )
     {
         return InventoryChangeTrigger.Instance.forItems( ItemPredicate.Builder.create().tag( stack ).build() );
     }

src/main/java/dan200/computercraft/data/Tags.java

@@ -7,46 +7,55 @@ package dan200.computercraft.data;
 
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.shared.Registry;
+import net.minecraft.data.BlockTagsProvider;
 import net.minecraft.data.DataGenerator;
 import net.minecraft.data.ItemTagsProvider;
 import net.minecraft.item.Item;
+import net.minecraft.tags.ITag;
 import net.minecraft.tags.ItemTags;
-import net.minecraft.tags.Tag;
 import net.minecraft.util.ResourceLocation;
+import net.minecraftforge.common.data.ExistingFileHelper;
 
 import static dan200.computercraft.data.Tags.CCTags.*;
 
 public class Tags extends ItemTagsProvider
 {
+    private static final ITag.INamedTag<Item> PIGLIN_LOVED = ItemTags.PIGLIN_LOVED;
+
     public static class CCTags
     {
-        public static final Tag<Item> COMPUTER = item( "computer" );
-        public static final Tag<Item> TURTLE = item( "turtle" );
-        public static final Tag<Item> WIRED_MODEM = item( "wired_modem" );
-        public static final Tag<Item> MONITOR = item( "monitor" );
+        public static final ITag.INamedTag<Item> COMPUTER = item( "computer" );
+        public static final ITag.INamedTag<Item> TURTLE = item( "turtle" );
+        public static final ITag.INamedTag<Item> WIRED_MODEM = item( "wired_modem" );
+        public static final ITag.INamedTag<Item> MONITOR = item( "monitor" );
     }
 
-    public Tags( DataGenerator generator )
+    public Tags( DataGenerator generator, ExistingFileHelper helper )
     {
-        super( generator );
+        super( generator, new BlockTagsProvider( generator, ComputerCraft.MOD_ID, helper ), ComputerCraft.MOD_ID, helper );
     }
 
     @Override
     protected void registerTags()
     {
-        getBuilder( COMPUTER )
-            .add( Registry.ModItems.COMPUTER_NORMAL.get() )
-            .add( Registry.ModItems.COMPUTER_ADVANCED.get() )
-            .add( Registry.ModItems.COMPUTER_COMMAND.get() );
-        getBuilder( TURTLE ).add( Registry.ModItems.TURTLE_NORMAL.get(), Registry.ModItems.TURTLE_ADVANCED.get() );
-        getBuilder( WIRED_MODEM ).add( Registry.ModItems.WIRED_MODEM.get(), Registry.ModItems.WIRED_MODEM_FULL.get() );
-        getBuilder( MONITOR )
-            .add( Registry.ModItems.MONITOR_NORMAL.get() )
-            .add( Registry.ModItems.MONITOR_ADVANCED.get() );
+        getOrCreateBuilder( COMPUTER ).add(
+            Registry.ModItems.COMPUTER_NORMAL.get(),
+            Registry.ModItems.COMPUTER_ADVANCED.get(),
+            Registry.ModItems.COMPUTER_COMMAND.get()
+        );
+        getOrCreateBuilder( TURTLE ).add( Registry.ModItems.TURTLE_NORMAL.get(), Registry.ModItems.TURTLE_ADVANCED.get() );
+        getOrCreateBuilder( WIRED_MODEM ).add( Registry.ModItems.WIRED_MODEM.get(), Registry.ModItems.WIRED_MODEM_FULL.get() );
+        getOrCreateBuilder( MONITOR ).add( Registry.ModItems.MONITOR_NORMAL.get(), Registry.ModItems.MONITOR_ADVANCED.get() );
+
+        getOrCreateBuilder( PIGLIN_LOVED ).add(
+            Registry.ModItems.COMPUTER_ADVANCED.get(), Registry.ModItems.TURTLE_ADVANCED.get(),
+            Registry.ModItems.WIRELESS_MODEM_ADVANCED.get(), Registry.ModItems.POCKET_COMPUTER_ADVANCED.get(),
+            Registry.ModItems.MONITOR_ADVANCED.get()
+        );
     }
 
-    private static Tag<Item> item( String name )
+    private static ITag.INamedTag<Item> item( String name )
     {
-        return new ItemTags.Wrapper( new ResourceLocation( ComputerCraft.MOD_ID, name ) );
+        return ItemTags.makeWrapperTag( new ResourceLocation( ComputerCraft.MOD_ID, name ).toString() );
     }
 }

src/main/java/dan200/computercraft/shared/Registry.java

@@ -92,7 +92,7 @@ public final class Registry
 
     public static final class ModBlocks
     {
-        static final DeferredRegister<Block> BLOCKS = new DeferredRegister<>( ForgeRegistries.BLOCKS, ComputerCraft.MOD_ID );
+        static final DeferredRegister<Block> BLOCKS = DeferredRegister.create( ForgeRegistries.BLOCKS, ComputerCraft.MOD_ID );
 
         private static Block.Properties properties()
         {
@@ -145,7 +145,7 @@ public final class Registry
 
     public static class ModTiles
     {
-        static final DeferredRegister<TileEntityType<?>> TILES = new DeferredRegister<>( ForgeRegistries.TILE_ENTITIES, ComputerCraft.MOD_ID );
+        static final DeferredRegister<TileEntityType<?>> TILES = DeferredRegister.create( ForgeRegistries.TILE_ENTITIES, ComputerCraft.MOD_ID );
 
         private static <T extends TileEntity> RegistryObject<TileEntityType<T>> ofBlock( RegistryObject<? extends Block> block, Function<TileEntityType<T>, T> factory )
         {
@@ -183,7 +183,7 @@ public final class Registry
 
     public static final class ModItems
     {
-        static final DeferredRegister<Item> ITEMS = new DeferredRegister<>( ForgeRegistries.ITEMS, ComputerCraft.MOD_ID );
+        static final DeferredRegister<Item> ITEMS = DeferredRegister.create( ForgeRegistries.ITEMS, ComputerCraft.MOD_ID );
 
         private static Item.Properties properties()
         {
@@ -281,7 +281,7 @@ public final class Registry
 
     public static class ModEntities
     {
-        static final DeferredRegister<EntityType<?>> ENTITIES = new DeferredRegister<>( ForgeRegistries.ENTITIES, ComputerCraft.MOD_ID );
+        static final DeferredRegister<EntityType<?>> ENTITIES = DeferredRegister.create( ForgeRegistries.ENTITIES, ComputerCraft.MOD_ID );
 
         public static final RegistryObject<EntityType<TurtlePlayer>> TURTLE_PLAYER = ENTITIES.register( "turtle_player", () ->
             EntityType.Builder.<TurtlePlayer>create( EntityClassification.MISC )
@@ -293,7 +293,7 @@ public final class Registry
 
     public static class ModContainers
     {
-        static final DeferredRegister<ContainerType<?>> CONTAINERS = new DeferredRegister<>( ForgeRegistries.CONTAINERS, ComputerCraft.MOD_ID );
+        static final DeferredRegister<ContainerType<?>> CONTAINERS = DeferredRegister.create( ForgeRegistries.CONTAINERS, ComputerCraft.MOD_ID );
 
         public static final RegistryObject<ContainerType<ContainerComputer>> COMPUTER = CONTAINERS.register( "computer",
             () -> ContainerData.toType( ComputerContainerData::new, ContainerComputer::new ) );

src/main/java/dan200/computercraft/shared/TurtlePermissions.java

@@ -11,6 +11,7 @@ import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
+import net.minecraft.world.server.ServerWorld;
 import net.minecraftforge.eventbus.api.SubscribeEvent;
 import net.minecraftforge.fml.common.Mod;
 
@@ -20,13 +21,12 @@ public final class TurtlePermissions
     public static boolean isBlockEnterable( World world, BlockPos pos, PlayerEntity player )
     {
         MinecraftServer server = world.getServer();
-        return server == null || world.isRemote || !server.isBlockProtected( world, pos, player );
+        return server == null || world.isRemote || (world instanceof ServerWorld && !server.isBlockProtected( (ServerWorld) world, pos, player ));
     }
 
     public static boolean isBlockEditable( World world, BlockPos pos, PlayerEntity player )
     {
-        MinecraftServer server = world.getServer();
-        return server == null || world.isRemote || !server.isBlockProtected( world, pos, player );
+        return isBlockEnterable( world, pos, player );
     }
 
     @SubscribeEvent

src/main/java/dan200/computercraft/shared/command/CommandComputerCraft.java

@@ -30,6 +30,7 @@ import net.minecraft.inventory.container.Container;
 import net.minecraft.inventory.container.INamedContainerProvider;
 import net.minecraft.network.play.server.SPlayerPositionLookPacket;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.text.IFormattableTextComponent;
 import net.minecraft.util.text.ITextComponent;
 import net.minecraft.util.text.StringTextComponent;
 import net.minecraft.util.text.TranslationTextComponent;
@@ -283,16 +284,16 @@ public final class CommandComputerCraft
 
     private static ITextComponent linkComputer( CommandSource source, ServerComputer serverComputer, int computerId )
     {
-        ITextComponent out = new StringTextComponent( "" );
+        IFormattableTextComponent out = new StringTextComponent( "" );
 
         // Append the computer instance
         if( serverComputer == null )
         {
-            out.appendSibling( text( "?" ) );
+            out.append( text( "?" ) );
         }
         else
         {
-            out.appendSibling( link(
+            out.append( link(
                 text( Integer.toString( serverComputer.getInstanceID() ) ),
                 "/computercraft dump " + serverComputer.getInstanceID(),
                 translate( "commands.computercraft.dump.action" )
@@ -300,20 +301,20 @@ public final class CommandComputerCraft
         }
 
         // And ID
-        out.appendText( " (id " + computerId + ")" );
+        out.appendString( " (id " + computerId + ")" );
 
         // And, if we're a player, some useful links
         if( serverComputer != null && UserLevel.OP.test( source ) && isPlayer( source ) )
         {
             out
-                .appendText( " " )
-                .appendSibling( link(
+                .appendString( " " )
+                .append( link(
                     text( "\u261b" ),
                     "/computercraft tp " + serverComputer.getInstanceID(),
                     translate( "commands.computercraft.tp.action" )
                 ) )
-                .appendText( " " )
-                .appendSibling( link(
+                .appendString( " " )
+                .append( link(
                     text( "\u20e2" ),
                     "/computercraft view " + serverComputer.getInstanceID(),
                     translate( "commands.computercraft.view.action" )

src/main/java/dan200/computercraft/shared/command/CommandCopy.java

@@ -12,6 +12,7 @@ import net.minecraft.client.Minecraft;
 import net.minecraft.command.CommandSource;
 import net.minecraft.util.text.ITextComponent;
 import net.minecraft.util.text.StringTextComponent;
+import net.minecraft.util.text.Style;
 import net.minecraft.util.text.TranslationTextComponent;
 import net.minecraft.util.text.event.ClickEvent;
 import net.minecraft.util.text.event.HoverEvent;
@@ -57,10 +58,8 @@ public final class CommandCopy
 
     public static ITextComponent createCopyText( String text )
     {
-        StringTextComponent name = new StringTextComponent( text );
-        name.getStyle()
+        return new StringTextComponent( text ).mergeStyle( Style.EMPTY
             .setClickEvent( new ClickEvent( ClickEvent.Action.RUN_COMMAND, PREFIX + text ) )
-            .setHoverEvent( new HoverEvent( HoverEvent.Action.SHOW_TEXT, new TranslationTextComponent( "gui.computercraft.tooltip.copy" ) ) );
-        return name;
+            .setHoverEvent( new HoverEvent( HoverEvent.Action.SHOW_TEXT, new TranslationTextComponent( "gui.computercraft.tooltip.copy" ) ) ) );
     }
 }

src/main/java/dan200/computercraft/shared/command/builder/HelpingArgumentBuilder.java

@@ -13,6 +13,7 @@ import com.mojang.brigadier.context.CommandContext;
 import com.mojang.brigadier.tree.CommandNode;
 import com.mojang.brigadier.tree.LiteralCommandNode;
 import net.minecraft.command.CommandSource;
+import net.minecraft.util.text.IFormattableTextComponent;
 import net.minecraft.util.text.ITextComponent;
 import net.minecraft.util.text.StringTextComponent;
 import net.minecraft.util.text.TextFormatting;
@@ -173,12 +174,12 @@ public final class HelpingArgumentBuilder extends LiteralArgumentBuilder<Command
         temp.addChild( node );
         String usage = dispatcher.getSmartUsage( temp, context.getSource() ).get( node ).substring( node.getName().length() );
 
-        ITextComponent output = new StringTextComponent( "" )
-            .appendSibling( coloured( "/" + command + usage, HEADER ) )
-            .appendText( " " )
-            .appendSibling( coloured( translate( "commands." + id + ".synopsis" ), SYNOPSIS ) )
-            .appendText( "\n" )
-            .appendSibling( translate( "commands." + id + ".desc" ) );
+        IFormattableTextComponent output = new StringTextComponent( "" )
+            .append( coloured( "/" + command + usage, HEADER ) )
+            .appendString( " " )
+            .append( coloured( translate( "commands." + id + ".synopsis" ), SYNOPSIS ) )
+            .appendString( "\n" )
+            .append( translate( "commands." + id + ".desc" ) );
 
         for( CommandNode<CommandSource> child : node.getChildren() )
         {
@@ -187,16 +188,16 @@ public final class HelpingArgumentBuilder extends LiteralArgumentBuilder<Command
                 continue;
             }
 
-            output.appendText( "\n" );
+            output.appendString( "\n" );
 
-            ITextComponent component = coloured( child.getName(), NAME );
+            IFormattableTextComponent component = coloured( child.getName(), NAME );
             component.getStyle().setClickEvent( new ClickEvent(
                 ClickEvent.Action.SUGGEST_COMMAND,
                 "/" + command + " " + child.getName()
             ) );
-            output.appendSibling( component );
+            output.append( component );
 
-            output.appendText( " - " ).appendSibling( translate( "commands." + id + "." + child.getName() + ".synopsis" ) );
+            output.appendString( " - " ).append( translate( "commands." + id + "." + child.getName() + ".synopsis" ) );
         }
 
         return output;

src/main/java/dan200/computercraft/shared/command/text/ChatHelpers.java

@@ -19,69 +19,67 @@ public final class ChatHelpers
 
     private ChatHelpers() {}
 
-    public static ITextComponent coloured( String text, TextFormatting colour )
+    public static IFormattableTextComponent coloured( String text, TextFormatting colour )
     {
-        ITextComponent component = new StringTextComponent( text == null ? "" : text );
-        component.getStyle().setColor( colour );
+        return new StringTextComponent( text == null ? "" : text ).mergeStyle( colour );
+    }
+
+    public static <T extends IFormattableTextComponent> T coloured( T component, TextFormatting colour )
+    {
+        component.mergeStyle( colour );
         return component;
     }
 
-    public static <T extends ITextComponent> T coloured( T component, TextFormatting colour )
-    {
-        component.getStyle().setColor( colour );
-        return component;
-    }
-
-    public static ITextComponent text( String text )
+    public static IFormattableTextComponent text( String text )
     {
         return new StringTextComponent( text == null ? "" : text );
     }
 
-    public static ITextComponent translate( String text )
+    public static IFormattableTextComponent translate( String text )
     {
         return new TranslationTextComponent( text == null ? "" : text );
     }
 
-    public static ITextComponent translate( String text, Object... args )
+    public static IFormattableTextComponent translate( String text, Object... args )
     {
         return new TranslationTextComponent( text == null ? "" : text, args );
     }
 
-    public static ITextComponent list( ITextComponent... children )
+    public static IFormattableTextComponent list( ITextComponent... children )
     {
-        ITextComponent component = new StringTextComponent( "" );
+        IFormattableTextComponent component = new StringTextComponent( "" );
         for( ITextComponent child : children )
         {
-            component.appendSibling( child );
+            component.append( child );
         }
         return component;
     }
 
-    public static ITextComponent position( BlockPos pos )
+    public static IFormattableTextComponent position( BlockPos pos )
     {
         if( pos == null ) return translate( "commands.computercraft.generic.no_position" );
         return translate( "commands.computercraft.generic.position", pos.getX(), pos.getY(), pos.getZ() );
     }
 
-    public static ITextComponent bool( boolean value )
+    public static IFormattableTextComponent bool( boolean value )
     {
         return value
             ? coloured( translate( "commands.computercraft.generic.yes" ), TextFormatting.GREEN )
             : coloured( translate( "commands.computercraft.generic.no" ), TextFormatting.RED );
     }
 
-    public static ITextComponent link( ITextComponent component, String command, ITextComponent toolTip )
+    public static IFormattableTextComponent link( IFormattableTextComponent component, String command, ITextComponent toolTip )
     {
         Style style = component.getStyle();
 
-        if( style.getColor() == null ) style.setColor( TextFormatting.YELLOW );
-        style.setClickEvent( new ClickEvent( ClickEvent.Action.RUN_COMMAND, command ) );
-        style.setHoverEvent( new HoverEvent( HoverEvent.Action.SHOW_TEXT, toolTip ) );
+        if( style.getColor() == null ) style = style.setFormatting( TextFormatting.YELLOW );
+        style = style.setClickEvent( new ClickEvent( ClickEvent.Action.RUN_COMMAND, command ) );
+        style = style.setHoverEvent( new HoverEvent( HoverEvent.Action.SHOW_TEXT, toolTip ) );
 
-        return component;
+        return component.setStyle( style );
     }
 
-    public static ITextComponent header( String text )
+    public static IFormattableTextComponent header( String text )
     {
         return coloured( text, HEADER );
     }

src/main/java/dan200/computercraft/shared/command/text/TableFormatter.java

@@ -79,12 +79,12 @@ public interface TableFormatter
             StringTextComponent line = new StringTextComponent( "" );
             for( int i = 0; i < columns - 1; i++ )
             {
-                line.appendSibling( headers[i] );
+                line.append( headers[i] );
                 ITextComponent padding = getPadding( headers[i], maxWidths[i] );
-                if( padding != null ) line.appendSibling( padding );
-                line.appendSibling( SEPARATOR );
+                if( padding != null ) line.append( padding );
+                line.append( SEPARATOR );
             }
-            line.appendSibling( headers[columns - 1] );
+            line.append( headers[columns - 1] );
 
             writeLine( rowId++, line );
 
@@ -100,12 +100,12 @@ public interface TableFormatter
             StringTextComponent line = new StringTextComponent( "" );
             for( int i = 0; i < columns - 1; i++ )
             {
-                line.appendSibling( row[i] );
+                line.append( row[i] );
                 ITextComponent padding = getPadding( row[i], maxWidths[i] );
-                if( padding != null ) line.appendSibling( padding );
-                line.appendSibling( SEPARATOR );
+                if( padding != null ) line.append( padding );
+                line.append( SEPARATOR );
             }
-            line.appendSibling( row[columns - 1] );
+            line.append( row[columns - 1] );
             writeLine( rowId++, line );
         }
 

src/main/java/dan200/computercraft/shared/common/TileGeneric.java

@@ -105,9 +105,9 @@ public abstract class TileGeneric extends TileEntity
     }
 
     @Override
-    public void handleUpdateTag( @Nonnull CompoundNBT tag )
+    public void handleUpdateTag( @Nonnull BlockState state, @Nonnull CompoundNBT tag )
     {
-        super.handleUpdateTag( tag );
+        super.handleUpdateTag( state, tag );
         readDescription( tag );
     }
 }

src/main/java/dan200/computercraft/shared/computer/blocks/BlockComputerBase.java

@@ -16,6 +16,8 @@ import net.minecraft.block.BlockState;
 import net.minecraft.entity.LivingEntity;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemStack;
+import net.minecraft.loot.LootContext;
+import net.minecraft.loot.LootParameters;
 import net.minecraft.stats.Stats;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.tileentity.TileEntityType;
@@ -23,12 +25,11 @@ import net.minecraft.util.Direction;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.RayTraceResult;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.IBlockReader;
 import net.minecraft.world.IWorldReader;
 import net.minecraft.world.World;
 import net.minecraft.world.server.ServerWorld;
-import net.minecraft.world.storage.loot.LootContext;
-import net.minecraft.world.storage.loot.LootParameters;
 import net.minecraftforge.fml.RegistryObject;
 
 import javax.annotation.Nonnull;
@@ -139,6 +140,7 @@ public abstract class BlockComputerBase<T extends TileComputerBase> extends Bloc
     public void onBlockHarvested( @Nonnull World world, @Nonnull BlockPos pos, @Nonnull BlockState state, @Nonnull PlayerEntity player )
     {
         if( !(world instanceof ServerWorld) ) return;
+        ServerWorld serverWorld = (ServerWorld) world;
 
         // We drop the item here instead of doing it in the harvest method, as we should
         // drop computers for creative players too.
@@ -147,19 +149,19 @@ public abstract class BlockComputerBase<T extends TileComputerBase> extends Bloc
         if( tile instanceof TileComputerBase )
         {
             TileComputerBase computer = (TileComputerBase) tile;
-            LootContext.Builder context = new LootContext.Builder( (ServerWorld) world )
+            LootContext.Builder context = new LootContext.Builder( serverWorld )
                 .withRandom( world.rand )
-                .withParameter( LootParameters.POSITION, pos )
+                .withParameter( LootParameters.field_237457_g_, Vector3d.copyCentered( pos ) )
                 .withParameter( LootParameters.TOOL, player.getHeldItemMainhand() )
                 .withParameter( LootParameters.THIS_ENTITY, player )
-                .withNullableParameter( LootParameters.BLOCK_ENTITY, tile )
+                .withParameter( LootParameters.BLOCK_ENTITY, tile )
                 .withDynamicDrop( DROP, ( ctx, out ) -> out.accept( getItem( computer ) ) );
             for( ItemStack item : state.getDrops( context ) )
             {
                 spawnAsEntity( world, pos, item );
             }
 
-            state.spawnAdditionalDrops( world, pos, player.getHeldItemMainhand() );
+            state.spawnAdditionalDrops( serverWorld, pos, player.getHeldItemMainhand() );
         }
     }
 

src/main/java/dan200/computercraft/shared/computer/blocks/TileCommandComputer.java

@@ -14,8 +14,8 @@ import net.minecraft.command.ICommandSource;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.tileentity.TileEntityType;
-import net.minecraft.util.math.Vec2f;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector2f;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.util.text.ITextComponent;
 import net.minecraft.util.text.StringTextComponent;
 import net.minecraft.util.text.TranslationTextComponent;
@@ -25,6 +25,7 @@ import net.minecraft.world.server.ServerWorld;
 import javax.annotation.Nonnull;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.UUID;
 
 public class TileCommandComputer extends TileComputer
 {
@@ -48,7 +49,7 @@ public class TileCommandComputer extends TileComputer
         }
 
         @Override
-        public void sendMessage( @Nonnull ITextComponent textComponent )
+        public void sendMessage( @Nonnull ITextComponent textComponent, @Nonnull UUID id )
         {
             output.put( output.size() + 1, textComponent.getString() );
         }
@@ -96,7 +97,7 @@ public class TileCommandComputer extends TileComputer
         }
 
         return new CommandSource( receiver,
-            new Vec3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 ), Vec2f.ZERO,
+            new Vector3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 ), Vector2f.ZERO,
             (ServerWorld) getWorld(), 2,
             name, new StringTextComponent( name ),
             getWorld().getServer(), null

src/main/java/dan200/computercraft/shared/computer/blocks/TileComputerBase.java

@@ -200,9 +200,9 @@ public abstract class TileComputerBase extends TileGeneric implements IComputerT
     }
 
     @Override
-    public void read( @Nonnull CompoundNBT nbt )
+    public void read( @Nonnull BlockState state, @Nonnull CompoundNBT nbt )
     {
-        super.read( nbt );
+        super.read( state, nbt );
 
         // Load ID, label and power state
         m_computerID = nbt.contains( NBT_ID ) ? nbt.getInt( NBT_ID ) : -1;

src/main/java/dan200/computercraft/shared/computer/core/ComputerState.java

@@ -24,7 +24,7 @@ public enum ComputerState implements IStringSerializable
 
     @Nonnull
     @Override
-    public String getName()
+    public String getString()
     {
         return name;
     }

src/main/java/dan200/computercraft/shared/computer/items/ItemComputerBase.java

@@ -43,7 +43,7 @@ public abstract class ItemComputerBase extends BlockItem implements IComputerIte
             if( id >= 0 )
             {
                 list.add( new TranslationTextComponent( "gui.computercraft.tooltip.computer_id", id )
-                    .applyTextStyle( TextFormatting.GRAY ) );
+                    .mergeStyle( TextFormatting.GRAY ) );
             }
         }
     }

src/main/java/dan200/computercraft/shared/data/BlockNamedEntityLootCondition.java

@@ -5,12 +5,13 @@
  */
 package dan200.computercraft.shared.data;
 
+import net.minecraft.loot.LootConditionType;
+import net.minecraft.loot.LootContext;
+import net.minecraft.loot.LootParameter;
+import net.minecraft.loot.LootParameters;
+import net.minecraft.loot.conditions.ILootCondition;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.INameable;
-import net.minecraft.world.storage.loot.LootContext;
-import net.minecraft.world.storage.loot.LootParameter;
-import net.minecraft.world.storage.loot.LootParameters;
-import net.minecraft.world.storage.loot.conditions.ILootCondition;
 
 import javax.annotation.Nonnull;
 import java.util.Collections;
@@ -22,6 +23,8 @@ import java.util.Set;
 public final class BlockNamedEntityLootCondition implements ILootCondition
 {
     public static final BlockNamedEntityLootCondition INSTANCE = new BlockNamedEntityLootCondition();
+    public static final LootConditionType TYPE = ConstantLootConditionSerializer.type( INSTANCE );
+    public static final IBuilder BUILDER = () -> INSTANCE;
 
     private BlockNamedEntityLootCondition()
     {
@@ -41,8 +44,10 @@ public final class BlockNamedEntityLootCondition implements ILootCondition
         return Collections.singleton( LootParameters.BLOCK_ENTITY );
     }
 
-    public static IBuilder builder()
+    @Override
+    @Nonnull
+    public LootConditionType func_230419_b_()
     {
-        return () -> INSTANCE;
+        return TYPE;
     }
 }

src/main/java/dan200/computercraft/shared/data/ConstantLootConditionSerializer.java

@@ -8,24 +8,24 @@ package dan200.computercraft.shared.data;
 import com.google.gson.JsonDeserializationContext;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonSerializationContext;
-import net.minecraft.util.ResourceLocation;
-import net.minecraft.world.storage.loot.conditions.ILootCondition;
+import net.minecraft.loot.ILootSerializer;
+import net.minecraft.loot.LootConditionType;
+import net.minecraft.loot.conditions.ILootCondition;
 
 import javax.annotation.Nonnull;
 
-public final class ConstantLootConditionSerializer<T extends ILootCondition> extends ILootCondition.AbstractSerializer<T>
+public final class ConstantLootConditionSerializer<T extends ILootCondition> implements ILootSerializer<T>
 {
     private final T instance;
 
-    private ConstantLootConditionSerializer( ResourceLocation id, Class<T> klass, T instance )
+    public ConstantLootConditionSerializer( T instance )
     {
-        super( id, klass );
         this.instance = instance;
     }
 
-    public static <T extends ILootCondition> ILootCondition.AbstractSerializer<T> of( ResourceLocation id, Class<T> klass, T instance )
+    public static <T extends ILootCondition> LootConditionType type( T condition )
     {
-        return new ConstantLootConditionSerializer<>( id, klass, instance );
+        return new LootConditionType( new ConstantLootConditionSerializer<>( condition ) );
     }
 
     @Override

src/main/java/dan200/computercraft/shared/data/HasComputerIdLootCondition.java

@@ -6,11 +6,12 @@
 package dan200.computercraft.shared.data;
 
 import dan200.computercraft.shared.computer.blocks.IComputerTile;
+import net.minecraft.loot.LootConditionType;
+import net.minecraft.loot.LootContext;
+import net.minecraft.loot.LootParameter;
+import net.minecraft.loot.LootParameters;
+import net.minecraft.loot.conditions.ILootCondition;
 import net.minecraft.tileentity.TileEntity;
-import net.minecraft.world.storage.loot.LootContext;
-import net.minecraft.world.storage.loot.LootParameter;
-import net.minecraft.world.storage.loot.LootParameters;
-import net.minecraft.world.storage.loot.conditions.ILootCondition;
 
 import javax.annotation.Nonnull;
 import java.util.Collections;
@@ -22,6 +23,8 @@ import java.util.Set;
 public final class HasComputerIdLootCondition implements ILootCondition
 {
     public static final HasComputerIdLootCondition INSTANCE = new HasComputerIdLootCondition();
+    public static final LootConditionType TYPE = ConstantLootConditionSerializer.type( INSTANCE );
+    public static final IBuilder BUILDER = () -> INSTANCE;
 
     private HasComputerIdLootCondition()
     {
@@ -41,8 +44,10 @@ public final class HasComputerIdLootCondition implements ILootCondition
         return Collections.singleton( LootParameters.BLOCK_ENTITY );
     }
 
-    public static IBuilder builder()
+    @Override
+    @Nonnull
+    public LootConditionType func_230419_b_()
     {
-        return () -> INSTANCE;
+        return TYPE;
     }
 }

src/main/java/dan200/computercraft/shared/data/PlayerCreativeLootCondition.java

@@ -7,10 +7,11 @@ package dan200.computercraft.shared.data;
 
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.world.storage.loot.LootContext;
-import net.minecraft.world.storage.loot.LootParameter;
-import net.minecraft.world.storage.loot.LootParameters;
-import net.minecraft.world.storage.loot.conditions.ILootCondition;
+import net.minecraft.loot.LootConditionType;
+import net.minecraft.loot.LootContext;
+import net.minecraft.loot.LootParameter;
+import net.minecraft.loot.LootParameters;
+import net.minecraft.loot.conditions.ILootCondition;
 
 import javax.annotation.Nonnull;
 import java.util.Collections;
@@ -22,6 +23,8 @@ import java.util.Set;
 public final class PlayerCreativeLootCondition implements ILootCondition
 {
     public static final PlayerCreativeLootCondition INSTANCE = new PlayerCreativeLootCondition();
+    public static final LootConditionType TYPE = ConstantLootConditionSerializer.type( INSTANCE );
+    public static final IBuilder BUILDER = () -> INSTANCE;
 
     private PlayerCreativeLootCondition()
     {
@@ -41,8 +44,10 @@ public final class PlayerCreativeLootCondition implements ILootCondition
         return Collections.singleton( LootParameters.THIS_ENTITY );
     }
 
-    public static IBuilder builder()
+    @Override
+    @Nonnull
+    public LootConditionType func_230419_b_()
     {
-        return () -> INSTANCE;
+        return TYPE;
     }
 }

src/main/java/dan200/computercraft/shared/media/items/ItemDisk.java

@@ -69,7 +69,7 @@ public class ItemDisk extends Item implements IMedia, IColouredItem
             if( id >= 0 )
             {
                 list.add( new TranslationTextComponent( "gui.computercraft.tooltip.disk_id", id )
-                    .applyTextStyle( TextFormatting.GRAY ) );
+                    .mergeStyle( TextFormatting.GRAY ) );
             }
         }
     }

src/main/java/dan200/computercraft/shared/media/recipes/DiskRecipe.java

@@ -19,14 +19,14 @@ import net.minecraft.item.crafting.SpecialRecipe;
 import net.minecraft.item.crafting.SpecialRecipeSerializer;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.world.World;
-import net.minecraftforge.common.Tags;
 
 import javax.annotation.Nonnull;
 
 public class DiskRecipe extends SpecialRecipe
 {
     private final Ingredient paper = Ingredient.fromItems( Items.PAPER );
-    private final Ingredient redstone = Ingredient.fromTag( Tags.Items.DUSTS_REDSTONE );
+    private final Ingredient redstone = Ingredient.fromItems( Items.REDSTONE );
+    // TODO: Ingredient.fromTag( Tags.Items.DUSTS_REDSTONE );
 
     public DiskRecipe( ResourceLocation id )
     {

src/main/java/dan200/computercraft/shared/network/NetworkHandler.java

@@ -13,7 +13,7 @@ import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.entity.player.ServerPlayerEntity;
 import net.minecraft.network.PacketBuffer;
 import net.minecraft.util.ResourceLocation;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 import net.minecraft.world.chunk.Chunk;
 import net.minecraftforge.fml.network.NetworkDirection;
@@ -76,9 +76,9 @@ public final class NetworkHandler
         network.sendToServer( packet );
     }
 
-    public static void sendToAllAround( NetworkMessage packet, World world, Vec3d pos, double range )
+    public static void sendToAllAround( NetworkMessage packet, World world, Vector3d pos, double range )
     {
-        PacketDistributor.TargetPoint target = new PacketDistributor.TargetPoint( pos.x, pos.y, pos.z, range, world.getDimension().getType() );
+        PacketDistributor.TargetPoint target = new PacketDistributor.TargetPoint( pos.x, pos.y, pos.z, range, world.getDimensionKey() );
         network.send( PacketDistributor.NEAR.with( () -> target ), packet );
     }
 

src/main/java/dan200/computercraft/shared/network/client/PlayRecordClientMessage.java

@@ -10,6 +10,7 @@ import net.minecraft.client.Minecraft;
 import net.minecraft.network.PacketBuffer;
 import net.minecraft.util.SoundEvent;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.text.StringTextComponent;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 import net.minecraftforge.fml.network.NetworkEvent;
@@ -79,7 +80,7 @@ public class PlayRecordClientMessage implements NetworkMessage
     public void handle( NetworkEvent.Context context )
     {
         Minecraft mc = Minecraft.getInstance();
-        mc.worldRenderer.playRecord( soundEvent, pos );
-        if( name != null ) mc.ingameGUI.setRecordPlayingMessage( name );
+        mc.worldRenderer.playRecord( soundEvent, pos, null );
+        if( name != null ) mc.ingameGUI.func_238451_a_( new StringTextComponent( name ) );
     }
 }

src/main/java/dan200/computercraft/shared/peripheral/diskdrive/DiskDriveState.java

@@ -24,7 +24,7 @@ public enum DiskDriveState implements IStringSerializable
 
     @Override
     @Nonnull
-    public String getName()
+    public String getString()
     {
         return name;
     }

src/main/java/dan200/computercraft/shared/peripheral/diskdrive/TileDiskDrive.java

@@ -122,10 +122,10 @@ public final class TileDiskDrive extends TileGeneric implements DefaultInventory
     }
 
     @Override
-    public void read( @Nonnull CompoundNBT nbt )
+    public void read( @Nonnull BlockState state, @Nonnull CompoundNBT nbt )
     {
-        super.read( nbt );
-        customName = nbt.contains( NBT_NAME ) ? ITextComponent.Serializer.fromJson( nbt.getString( NBT_NAME ) ) : null;
+        super.read( state, nbt );
+        customName = nbt.contains( NBT_NAME ) ? ITextComponent.Serializer.getComponentFromJson( nbt.getString( NBT_NAME ) ) : null;
         if( nbt.contains( NBT_ITEM ) )
         {
             CompoundNBT item = nbt.getCompound( NBT_ITEM );

src/main/java/dan200/computercraft/shared/peripheral/generic/data/BlockData.java

@@ -7,7 +7,7 @@ package dan200.computercraft.shared.peripheral.generic.data;
 
 import com.google.common.collect.ImmutableMap;
 import net.minecraft.block.BlockState;
-import net.minecraft.state.IProperty;
+import net.minecraft.state.Property;
 
 import javax.annotation.Nonnull;
 import java.util.HashMap;
@@ -21,9 +21,9 @@ public class BlockData
         data.put( "name", DataHelpers.getId( state.getBlock() ) );
 
         Map<Object, Object> stateTable = new HashMap<>();
-        for( ImmutableMap.Entry<IProperty<?>, ? extends Comparable<?>> entry : state.getValues().entrySet() )
+        for( ImmutableMap.Entry<Property<?>, ? extends Comparable<?>> entry : state.getValues().entrySet() )
         {
-            IProperty<?> property = entry.getKey();
+            Property<?> property = entry.getKey();
             stateTable.put( property.getName(), getPropertyValue( property, entry.getValue() ) );
         }
         data.put( "state", stateTable );
@@ -33,7 +33,7 @@ public class BlockData
     }
 
     @SuppressWarnings( { "unchecked", "rawtypes" } )
-    private static Object getPropertyValue( IProperty property, Comparable value )
+    private static Object getPropertyValue( Property property, Comparable value )
     {
         if( value instanceof String || value instanceof Number || value instanceof Boolean ) return value;
         return property.getName( value );

src/main/java/dan200/computercraft/shared/peripheral/generic/data/ItemData.java

@@ -106,7 +106,7 @@ public class ItemData
     {
         try
         {
-            return ITextComponent.Serializer.fromJson( x.getString() );
+            return ITextComponent.Serializer.getComponentFromJson( x.getString() );
         }
         catch( JsonParseException e )
         {
@@ -157,7 +157,7 @@ public class ItemData
 
         enchants.ensureCapacity( enchants.size() + rawEnchants.size() );
 
-        for( Map.Entry<Enchantment, Integer> entry : EnchantmentHelper.func_226652_a_( rawEnchants ).entrySet() )
+        for( Map.Entry<Enchantment, Integer> entry : EnchantmentHelper.deserializeEnchantments( rawEnchants ).entrySet() )
         {
             Enchantment enchantment = entry.getKey();
             Integer level = entry.getValue();

src/main/java/dan200/computercraft/shared/peripheral/modem/ModemPeripheral.java

@@ -13,7 +13,7 @@ import dan200.computercraft.api.network.IPacketSender;
 import dan200.computercraft.api.network.Packet;
 import dan200.computercraft.api.peripheral.IComputerAccess;
 import dan200.computercraft.api.peripheral.IPeripheral;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
@@ -171,7 +171,7 @@ public abstract class ModemPeripheral implements IPeripheral, IPacketSender, IPa
         parseChannel( replyChannel );
 
         World world = getWorld();
-        Vec3d position = getPosition();
+        Vector3d position = getPosition();
         IPacketNetwork network = m_network;
 
         if( world == null || position == null || network == null ) return;

src/main/java/dan200/computercraft/shared/peripheral/modem/wired/BlockCable.java

@@ -15,7 +15,7 @@ import net.minecraft.block.BlockState;
 import net.minecraft.block.IWaterLoggable;
 import net.minecraft.entity.LivingEntity;
 import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.fluid.IFluidState;
+import net.minecraft.fluid.FluidState;
 import net.minecraft.item.BlockItemUseContext;
 import net.minecraft.item.ItemStack;
 import net.minecraft.state.BooleanProperty;
@@ -100,7 +100,7 @@ public class BlockCable extends BlockGeneric implements IWaterLoggable
     }
 
     @Override
-    public boolean removedByPlayer( BlockState state, World world, BlockPos pos, PlayerEntity player, boolean willHarvest, IFluidState fluid )
+    public boolean removedByPlayer( BlockState state, World world, BlockPos pos, PlayerEntity player, boolean willHarvest, FluidState fluid )
     {
         if( state.get( CABLE ) && state.get( MODEM ).getFacing() != null )
         {
@@ -180,7 +180,7 @@ public class BlockCable extends BlockGeneric implements IWaterLoggable
     @Nonnull
     @Override
     @Deprecated
-    public IFluidState getFluidState( @Nonnull BlockState state )
+    public FluidState getFluidState( @Nonnull BlockState state )
     {
         return getWaterloggedFluidState( state );
     }
@@ -207,9 +207,7 @@ public class BlockCable extends BlockGeneric implements IWaterLoggable
         Direction facing = state.get( MODEM ).getFacing();
         if( facing == null ) return true;
 
-        BlockPos offsetPos = pos.offset( facing );
-        BlockState offsetState = world.getBlockState( offsetPos );
-        return hasSolidSide( offsetState, world, offsetPos, facing.getOpposite() );
+        return hasEnoughSolidSide( world, pos.offset( facing ), facing.getOpposite() );
     }
 
     @Nullable

src/main/java/dan200/computercraft/shared/peripheral/modem/wired/CableModemVariant.java

@@ -65,7 +65,7 @@ public enum CableModemVariant implements IStringSerializable
 
     @Nonnull
     @Override
-    public String getName()
+    public String getString()
     {
         return name;
     }

src/main/java/dan200/computercraft/shared/peripheral/modem/wired/TileCable.java

@@ -28,7 +28,7 @@ import net.minecraft.util.Direction;
 import net.minecraft.util.Hand;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.BlockRayTraceResult;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.util.text.TranslationTextComponent;
 import net.minecraft.world.World;
 import net.minecraftforge.common.capabilities.Capability;
@@ -58,10 +58,10 @@ public class TileCable extends TileGeneric
 
         @Nonnull
         @Override
-        public Vec3d getPosition()
+        public Vector3d getPosition()
         {
             BlockPos pos = getPos();
-            return new Vec3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 );
+            return new Vector3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 );
         }
 
         @Override
@@ -103,10 +103,10 @@ public class TileCable extends TileGeneric
 
         @Nonnull
         @Override
-        public Vec3d getPosition()
+        public Vector3d getPosition()
         {
             BlockPos pos = getPos().offset( modemDirection );
-            return new Vec3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 );
+            return new Vector3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 );
         }
 
         @Nonnull
@@ -281,9 +281,9 @@ public class TileCable extends TileGeneric
     }
 
     @Override
-    public void read( @Nonnull CompoundNBT nbt )
+    public void read( @Nonnull BlockState state, @Nonnull CompoundNBT nbt )
     {
-        super.read( nbt );
+        super.read( state, nbt );
         m_peripheralAccessAllowed = nbt.getBoolean( NBT_PERIPHERAL_ENABLED );
         m_peripheral.read( nbt, "" );
     }
@@ -422,12 +422,6 @@ public class TileCable extends TileGeneric
         m_node.updatePeripherals( peripherals );
     }
 
-    @Override
-    public boolean canRenderBreaking()
-    {
-        return true;
-    }
-
     @Nonnull
     @Override
     public <T> LazyOptional<T> getCapability( @Nonnull Capability<T> capability, @Nullable Direction side )

src/main/java/dan200/computercraft/shared/peripheral/modem/wired/TileWiredModemFull.java

@@ -26,7 +26,7 @@ import net.minecraft.util.Direction;
 import net.minecraft.util.Hand;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.BlockRayTraceResult;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.util.text.StringTextComponent;
 import net.minecraft.util.text.TranslationTextComponent;
 import net.minecraft.world.World;
@@ -85,10 +85,10 @@ public class TileWiredModemFull extends TileGeneric
 
         @Nonnull
         @Override
-        public Vec3d getPosition()
+        public Vector3d getPosition()
         {
             BlockPos pos = m_entity.getPos();
-            return new Vec3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 );
+            return new Vector3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 );
         }
     }
 
@@ -217,17 +217,17 @@ public class TileWiredModemFull extends TileGeneric
         StringTextComponent base = new StringTextComponent( "" );
         for( int i = 0; i < names.size(); i++ )
         {
-            if( i > 0 ) base.appendText( ", " );
-            base.appendSibling( CommandCopy.createCopyText( names.get( i ) ) );
+            if( i > 0 ) base.appendString( ", " );
+            base.append( CommandCopy.createCopyText( names.get( i ) ) );
         }
 
         player.sendStatusMessage( new TranslationTextComponent( kind, base ), false );
     }
 
     @Override
-    public void read( @Nonnull CompoundNBT nbt )
+    public void read( @Nonnull BlockState state, @Nonnull CompoundNBT nbt )
     {
-        super.read( nbt );
+        super.read( state, nbt );
         m_peripheralAccessAllowed = nbt.getBoolean( NBT_PERIPHERAL_ENABLED );
         for( int i = 0; i < m_peripherals.length; i++ ) m_peripherals[i].read( nbt, Integer.toString( i ) );
     }
@@ -399,10 +399,10 @@ public class TileWiredModemFull extends TileGeneric
 
             @Nonnull
             @Override
-            public Vec3d getPosition()
+            public Vector3d getPosition()
             {
                 BlockPos pos = getPos().offset( side );
-                return new Vec3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 );
+                return new Vector3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 );
             }
 
             @Nonnull

src/main/java/dan200/computercraft/shared/peripheral/modem/wireless/BlockWirelessModem.java

@@ -10,7 +10,7 @@ import dan200.computercraft.shared.peripheral.modem.ModemShapes;
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.IWaterLoggable;
-import net.minecraft.fluid.IFluidState;
+import net.minecraft.fluid.FluidState;
 import net.minecraft.item.BlockItemUseContext;
 import net.minecraft.state.BooleanProperty;
 import net.minecraft.state.DirectionProperty;
@@ -62,7 +62,7 @@ public class BlockWirelessModem extends BlockGeneric implements IWaterLoggable
     @Nonnull
     @Override
     @Deprecated
-    public IFluidState getFluidState( @Nonnull BlockState state )
+    public FluidState getFluidState( @Nonnull BlockState state )
     {
         return getWaterloggedFluidState( state );
     }
@@ -80,12 +80,10 @@ public class BlockWirelessModem extends BlockGeneric implements IWaterLoggable
 
     @Override
     @Deprecated
-    public boolean isValidPosition( BlockState state, IWorldReader world, BlockPos pos )
+    public boolean isValidPosition( BlockState state, @Nonnull IWorldReader world, BlockPos pos )
     {
         Direction facing = state.get( FACING );
-        BlockPos offsetPos = pos.offset( facing );
-        BlockState offsetState = world.getBlockState( offsetPos );
-        return hasSolidSide( offsetState, world, offsetPos, facing.getOpposite() );
+        return hasEnoughSolidSide( world, pos.offset( facing ), facing.getOpposite() );
     }
 
     @Nullable

src/main/java/dan200/computercraft/shared/peripheral/modem/wireless/TileWirelessModem.java

@@ -15,7 +15,7 @@ import net.minecraft.block.BlockState;
 import net.minecraft.tileentity.TileEntityType;
 import net.minecraft.util.Direction;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 import net.minecraftforge.common.capabilities.Capability;
 import net.minecraftforge.common.util.LazyOptional;
@@ -46,10 +46,10 @@ public class TileWirelessModem extends TileGeneric
 
         @Nonnull
         @Override
-        public Vec3d getPosition()
+        public Vector3d getPosition()
         {
             BlockPos pos = entity.getPos().offset( entity.modemDirection );
-            return new Vec3d( pos.getX(), pos.getY(), pos.getZ() );
+            return new Vector3d( pos.getX(), pos.getY(), pos.getZ() );
         }
 
         @Override

src/main/java/dan200/computercraft/shared/peripheral/modem/wireless/WirelessModemPeripheral.java

@@ -9,7 +9,7 @@ import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.api.network.IPacketNetwork;
 import dan200.computercraft.shared.peripheral.modem.ModemPeripheral;
 import dan200.computercraft.shared.peripheral.modem.ModemState;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 
 public abstract class WirelessModemPeripheral extends ModemPeripheral
@@ -40,7 +40,7 @@ public abstract class WirelessModemPeripheral extends ModemPeripheral
             World world = getWorld();
             if( world != null )
             {
-                Vec3d position = getPosition();
+                Vector3d position = getPosition();
                 double minRange = ComputerCraft.modemRange;
                 double maxRange = ComputerCraft.modemHighAltitudeRange;
                 if( world.isRaining() && world.isThundering() )

src/main/java/dan200/computercraft/shared/peripheral/monitor/MonitorEdgeState.java

@@ -60,12 +60,12 @@ public enum MonitorEdgeState implements IStringSerializable
     @Override
     public String toString()
     {
-        return getName();
+        return getString();
     }
 
     @Nonnull
     @Override
-    public String getName()
+    public String getString()
     {
         return name;
     }

src/main/java/dan200/computercraft/shared/peripheral/monitor/TileMonitor.java

@@ -135,13 +135,14 @@ public class TileMonitor extends TileGeneric
     }
 
     @Override
-    public void read( @Nonnull CompoundNBT tag )
+    public void read( @Nonnull BlockState state, @Nonnull CompoundNBT nbt )
     {
-        super.read( tag );
-        m_xIndex = tag.getInt( NBT_X );
-        m_yIndex = tag.getInt( NBT_Y );
-        m_width = tag.getInt( NBT_WIDTH );
-        m_height = tag.getInt( NBT_HEIGHT );
+        super.read( state, nbt );
+
+        m_xIndex = nbt.getInt( NBT_X );
+        m_yIndex = nbt.getInt( NBT_Y );
+        m_width = nbt.getInt( NBT_WIDTH );
+        m_height = nbt.getInt( NBT_HEIGHT );
     }
 
     @Override
@@ -329,13 +330,13 @@ public class TileMonitor extends TileGeneric
         // Ensure we're actually a monitor block. This _should_ always be the case, but sometimes there's
         // fun problems with the block being missing on the client.
         BlockState state = getBlockState();
-        return state.has( BlockMonitor.FACING ) ? state.get( BlockMonitor.FACING ) : Direction.NORTH;
+        return state.hasProperty( BlockMonitor.FACING ) ? state.get( BlockMonitor.FACING ) : Direction.NORTH;
     }
 
     public Direction getOrientation()
     {
         BlockState state = getBlockState();
-        return state.has( BlockMonitor.ORIENTATION ) ? state.get( BlockMonitor.ORIENTATION ) : Direction.NORTH;
+        return state.hasProperty( BlockMonitor.ORIENTATION ) ? state.get( BlockMonitor.ORIENTATION ) : Direction.NORTH;
     }
 
     public Direction getFront()

src/main/java/dan200/computercraft/shared/peripheral/printer/PrinterPeripheral.java

@@ -46,8 +46,8 @@ public class PrinterPeripheral implements IPeripheral
      * Writes text to the current page.
      *
      * @param arguments The values to write to the page.
-     * @cc.tparam string|number ... The values to write to the page.
      * @throws LuaException If any values couldn't be converted to a string, or if no page is started.
+     * @cc.tparam string|number ... The values to write to the page.
      */
     @LuaFunction
     public final void write( IArguments arguments ) throws LuaException
@@ -62,9 +62,9 @@ public class PrinterPeripheral implements IPeripheral
      * Returns the current position of the cursor on the page.
      *
      * @return The position of the cursor.
+     * @throws LuaException If a page isn't being printed.
      * @cc.treturn number The X position of the cursor.
      * @cc.treturn number The Y position of the cursor.
-     * @throws LuaException If a page isn't being printed.
      */
     @LuaFunction
     public final Object[] getCursorPos() throws LuaException
@@ -93,9 +93,9 @@ public class PrinterPeripheral implements IPeripheral
      * Returns the size of the current page.
      *
      * @return The size of the page.
+     * @throws LuaException If a page isn't being printed.
      * @cc.treturn number The width of the page.
      * @cc.treturn number The height of the page.
-     * @throws LuaException If a page isn't being printed.
      */
     @LuaFunction
     public final Object[] getPageSize() throws LuaException

src/main/java/dan200/computercraft/shared/peripheral/printer/TilePrinter.java

@@ -22,7 +22,7 @@ import net.minecraft.nbt.CompoundNBT;
 import net.minecraft.tileentity.TileEntityType;
 import net.minecraft.util.*;
 import net.minecraft.util.math.BlockRayTraceResult;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.util.text.ITextComponent;
 import net.minecraft.util.text.TranslationTextComponent;
 import net.minecraftforge.common.capabilities.Capability;
@@ -91,11 +91,11 @@ public final class TilePrinter extends TileGeneric implements DefaultSidedInvent
     }
 
     @Override
-    public void read( @Nonnull CompoundNBT nbt )
+    public void read( @Nonnull BlockState state, @Nonnull CompoundNBT nbt )
     {
-        super.read( nbt );
+        super.read( state, nbt );
 
-        customName = nbt.contains( NBT_NAME ) ? ITextComponent.Serializer.fromJson( nbt.getString( NBT_NAME ) ) : null;
+        customName = nbt.contains( NBT_NAME ) ? ITextComponent.Serializer.getComponentFromJson( nbt.getString( NBT_NAME ) ) : null;
 
         // Read page
         synchronized( m_page )
@@ -403,7 +403,7 @@ public final class TilePrinter extends TileGeneric implements DefaultSidedInvent
                 setInventorySlotContents( i, ItemStack.EMPTY );
 
                 // Spawn the item in the world
-                WorldUtil.dropItemStack( stack, getWorld(), new Vec3d( getPos() ).add( 0.5, 0.75, 0.5 ) );
+                WorldUtil.dropItemStack( stack, getWorld(), Vector3d.copy( getPos() ).add( 0.5, 0.75, 0.5 ) );
             }
         }
     }

src/main/java/dan200/computercraft/shared/peripheral/speaker/SpeakerPeripheral.java

@@ -16,7 +16,7 @@ import net.minecraft.state.properties.NoteBlockInstrument;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.ResourceLocationException;
 import net.minecraft.util.SoundCategory;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
@@ -44,7 +44,7 @@ public abstract class SpeakerPeripheral implements IPeripheral
 
     public abstract World getWorld();
 
-    public abstract Vec3d getPosition();
+    public abstract Vector3d getPosition();
 
     public boolean madeSound( long ticks )
     {
@@ -66,9 +66,9 @@ public abstract class SpeakerPeripheral implements IPeripheral
      * with an optional volume and speed multiplier, and plays it through the speaker.
      *
      * @param context The Lua context
-     * @param name The name of the sound to play.
+     * @param name    The name of the sound to play.
      * @param volumeA The volume to play the sound at, from 0.0 to 3.0. Defaults to 1.0.
-     * @param pitchA The speed to play the sound at, from 0.5 to 2.0. Defaults to 1.0.
+     * @param pitchA  The speed to play the sound at, from 0.5 to 2.0. Defaults to 1.0.
      * @return Whether the sound could be played.
      * @throws LuaException If the sound name couldn't be decoded.
      */
@@ -102,9 +102,9 @@ public abstract class SpeakerPeripheral implements IPeripheral
      * and 6 and 18 map to C.
      *
      * @param context The Lua context
-     * @param name The name of the note to play.
+     * @param name    The name of the note to play.
      * @param volumeA The volume to play the note at, from 0.0 to 3.0. Defaults to 1.0.
-     * @param pitchA The pitch to play the note at in semitones, from 0 to 24. Defaults to 12.
+     * @param pitchA  The pitch to play the note at in semitones, from 0 to 24. Defaults to 12.
      * @return Whether the note could be played.
      * @throws LuaException If the instrument doesn't exist.
      */
@@ -117,7 +117,7 @@ public abstract class SpeakerPeripheral implements IPeripheral
         NoteBlockInstrument instrument = null;
         for( NoteBlockInstrument testInstrument : NoteBlockInstrument.values() )
         {
-            if( testInstrument.getName().equalsIgnoreCase( name ) )
+            if( testInstrument.getString().equalsIgnoreCase( name ) )
             {
                 instrument = testInstrument;
                 break;
@@ -144,7 +144,7 @@ public abstract class SpeakerPeripheral implements IPeripheral
         }
 
         World world = getWorld();
-        Vec3d pos = getPosition();
+        Vector3d pos = getPosition();
 
         context.issueMainThreadTask( () -> {
             MinecraftServer server = world.getServer();
@@ -152,7 +152,7 @@ public abstract class SpeakerPeripheral implements IPeripheral
 
             float adjVolume = Math.min( volume, 3.0f );
             server.getPlayerList().sendToAllNearExcept(
-                null, pos.x, pos.y, pos.z, adjVolume > 1.0f ? 16 * adjVolume : 16.0, world.dimension.getType(),
+                null, pos.x, pos.y, pos.z, adjVolume > 1.0f ? 16 * adjVolume : 16.0, world.getDimensionKey(),
                 new SPlaySoundPacket( name, SoundCategory.RECORDS, pos, adjVolume, pitch )
             );
             return null;

src/main/java/dan200/computercraft/shared/peripheral/speaker/TileSpeaker.java

@@ -12,7 +12,7 @@ import net.minecraft.tileentity.ITickableTileEntity;
 import net.minecraft.tileentity.TileEntityType;
 import net.minecraft.util.Direction;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 import net.minecraftforge.common.capabilities.Capability;
 import net.minecraftforge.common.util.LazyOptional;
@@ -77,10 +77,10 @@ public class TileSpeaker extends TileGeneric implements ITickableTileEntity
         }
 
         @Override
-        public Vec3d getPosition()
+        public Vector3d getPosition()
         {
             BlockPos pos = speaker.getPos();
-            return new Vec3d( pos.getX(), pos.getY(), pos.getZ() );
+            return new Vector3d( pos.getX(), pos.getY(), pos.getZ() );
         }
 
         @Override

src/main/java/dan200/computercraft/shared/pocket/items/ItemPocketComputer.java

@@ -27,12 +27,14 @@ import net.minecraft.client.util.ITooltipFlag;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.inventory.IInventory;
-import net.minecraft.item.IItemPropertyGetter;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemGroup;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.CompoundNBT;
-import net.minecraft.util.*;
+import net.minecraft.util.ActionResult;
+import net.minecraft.util.ActionResultType;
+import net.minecraft.util.Hand;
+import net.minecraft.util.NonNullList;
 import net.minecraft.util.text.ITextComponent;
 import net.minecraft.util.text.StringTextComponent;
 import net.minecraft.util.text.TextFormatting;
@@ -60,8 +62,6 @@ public class ItemPocketComputer extends Item implements IComputerItem, IMedia, I
     {
         super( settings );
         this.family = family;
-        addPropertyOverride( new ResourceLocation( ComputerCraft.MOD_ID, "state" ), COMPUTER_STATE );
-        addPropertyOverride( new ResourceLocation( ComputerCraft.MOD_ID, "coloured" ), COMPUTER_COLOURED );
     }
 
     public ItemStack create( int id, String label, int colour, IPocketUpgrade upgrade )
@@ -190,7 +190,7 @@ public class ItemPocketComputer extends Item implements IComputerItem, IMedia, I
             if( id >= 0 )
             {
                 list.add( new TranslationTextComponent( "gui.computercraft.tooltip.computer_id", id )
-                    .applyTextStyle( TextFormatting.GRAY ) );
+                    .mergeStyle( TextFormatting.GRAY ) );
             }
         }
     }
@@ -411,7 +411,4 @@ public class ItemPocketComputer extends Item implements IComputerItem, IMedia, I
     {
         return stack.getOrCreateChildTag( NBT_UPGRADE_INFO );
     }
-
-    private static final IItemPropertyGetter COMPUTER_STATE = ( stack, world, player ) -> getState( stack ).ordinal();
-    private static final IItemPropertyGetter COMPUTER_COLOURED = ( stack, world, player ) -> IColouredItem.getColourBasic( stack ) != -1 ? 1 : 0;
 }

src/main/java/dan200/computercraft/shared/pocket/peripherals/PocketModemPeripheral.java

@@ -8,7 +8,7 @@ package dan200.computercraft.shared.pocket.peripherals;
 import dan200.computercraft.api.peripheral.IPeripheral;
 import dan200.computercraft.shared.peripheral.modem.ModemState;
 import dan200.computercraft.shared.peripheral.modem.wireless.WirelessModemPeripheral;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
@@ -16,14 +16,14 @@ import javax.annotation.Nonnull;
 public class PocketModemPeripheral extends WirelessModemPeripheral
 {
     private World world = null;
-    private Vec3d position = Vec3d.ZERO;
+    private Vector3d position = Vector3d.ZERO;
 
     public PocketModemPeripheral( boolean advanced )
     {
         super( new ModemState(), advanced );
     }
 
-    void setLocation( World world, Vec3d position )
+    void setLocation( World world, Vector3d position )
     {
         this.position = position;
         this.world = world;
@@ -38,7 +38,7 @@ public class PocketModemPeripheral extends WirelessModemPeripheral
 
     @Nonnull
     @Override
-    public Vec3d getPosition()
+    public Vector3d getPosition()
     {
         return position;
     }

src/main/java/dan200/computercraft/shared/pocket/peripherals/PocketSpeakerPeripheral.java

@@ -7,15 +7,15 @@ package dan200.computercraft.shared.pocket.peripherals;
 
 import dan200.computercraft.api.peripheral.IPeripheral;
 import dan200.computercraft.shared.peripheral.speaker.SpeakerPeripheral;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 
 public class PocketSpeakerPeripheral extends SpeakerPeripheral
 {
     private World world = null;
-    private Vec3d position = Vec3d.ZERO;
+    private Vector3d position = Vector3d.ZERO;
 
-    void setLocation( World world, Vec3d position )
+    void setLocation( World world, Vector3d position )
     {
         this.position = position;
         this.world = world;
@@ -28,7 +28,7 @@ public class PocketSpeakerPeripheral extends SpeakerPeripheral
     }
 
     @Override
-    public Vec3d getPosition()
+    public Vector3d getPosition()
     {
         return world != null ? position : null;
     }

src/main/java/dan200/computercraft/shared/proxy/ComputerCraftProxyCommon.java

@@ -19,7 +19,6 @@ import dan200.computercraft.shared.computer.core.IComputer;
 import dan200.computercraft.shared.computer.core.IContainerComputer;
 import dan200.computercraft.shared.computer.core.ServerComputer;
 import dan200.computercraft.shared.data.BlockNamedEntityLootCondition;
-import dan200.computercraft.shared.data.ConstantLootConditionSerializer;
 import dan200.computercraft.shared.data.HasComputerIdLootCondition;
 import dan200.computercraft.shared.data.PlayerCreativeLootCondition;
 import dan200.computercraft.shared.media.items.RecordMedia;
@@ -29,21 +28,18 @@ import dan200.computercraft.shared.util.NullStorage;
 import net.minecraft.inventory.container.Container;
 import net.minecraft.item.Item;
 import net.minecraft.item.MusicDiscItem;
+import net.minecraft.loot.*;
 import net.minecraft.util.ResourceLocation;
-import net.minecraft.world.storage.loot.ConstantRange;
-import net.minecraft.world.storage.loot.LootPool;
-import net.minecraft.world.storage.loot.LootTables;
-import net.minecraft.world.storage.loot.TableLootEntry;
-import net.minecraft.world.storage.loot.conditions.LootConditionManager;
+import net.minecraft.util.registry.Registry;
 import net.minecraftforge.common.capabilities.CapabilityManager;
 import net.minecraftforge.event.LootTableLoadEvent;
+import net.minecraftforge.event.RegisterCommandsEvent;
 import net.minecraftforge.event.TickEvent;
 import net.minecraftforge.event.entity.player.PlayerContainerEvent;
 import net.minecraftforge.eventbus.api.SubscribeEvent;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.event.lifecycle.FMLCommonSetupEvent;
 import net.minecraftforge.fml.event.server.FMLServerStartedEvent;
-import net.minecraftforge.fml.event.server.FMLServerStartingEvent;
 import net.minecraftforge.fml.event.server.FMLServerStoppedEvent;
 
 import java.util.Arrays;
@@ -68,23 +64,14 @@ public final class ComputerCraftProxyCommon
 
     public static void registerLoot()
     {
-        LootConditionManager.registerCondition( ConstantLootConditionSerializer.of(
-            new ResourceLocation( ComputerCraft.MOD_ID, "block_named" ),
-            BlockNamedEntityLootCondition.class,
-            BlockNamedEntityLootCondition.INSTANCE
-        ) );
+        registerCondition( "block_named", BlockNamedEntityLootCondition.TYPE );
+        registerCondition( "player_creative", PlayerCreativeLootCondition.TYPE );
+        registerCondition( "has_id", HasComputerIdLootCondition.TYPE );
+    }
 
-        LootConditionManager.registerCondition( ConstantLootConditionSerializer.of(
-            new ResourceLocation( ComputerCraft.MOD_ID, "player_creative" ),
-            PlayerCreativeLootCondition.class,
-            PlayerCreativeLootCondition.INSTANCE
-        ) );
-
-        LootConditionManager.registerCondition( ConstantLootConditionSerializer.of(
-            new ResourceLocation( ComputerCraft.MOD_ID, "has_id" ),
-            HasComputerIdLootCondition.class,
-            HasComputerIdLootCondition.INSTANCE
-        ) );
+    private static void registerCondition( String name, LootConditionType serializer )
+    {
+        Registry.register( Registry.LOOT_CONDITION_TYPE, new ResourceLocation( ComputerCraft.MOD_ID, name ), serializer );
     }
 
     private static void registerProviders()
@@ -152,9 +139,9 @@ public final class ComputerCraftProxyCommon
         }
 
         @SubscribeEvent
-        public static void onServerStarting( FMLServerStartingEvent event )
+        public static void onRegisterCommand( RegisterCommandsEvent event )
         {
-            CommandComputerCraft.register( event.getCommandDispatcher() );
+            CommandComputerCraft.register( event.getDispatcher() );
         }
 
         @SubscribeEvent

src/main/java/dan200/computercraft/shared/turtle/blocks/BlockTurtle.java

@@ -20,7 +20,7 @@ import net.minecraft.entity.Entity;
 import net.minecraft.entity.LivingEntity;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.entity.projectile.DamagingProjectileEntity;
-import net.minecraft.fluid.IFluidState;
+import net.minecraft.fluid.FluidState;
 import net.minecraft.item.BlockItemUseContext;
 import net.minecraft.item.ItemStack;
 import net.minecraft.state.DirectionProperty;
@@ -31,11 +31,14 @@ import net.minecraft.tileentity.TileEntityType;
 import net.minecraft.util.Direction;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
 import net.minecraft.util.math.shapes.ISelectionContext;
 import net.minecraft.util.math.shapes.VoxelShape;
 import net.minecraft.util.math.shapes.VoxelShapes;
-import net.minecraft.world.*;
+import net.minecraft.util.math.vector.Vector3d;
+import net.minecraft.world.Explosion;
+import net.minecraft.world.IBlockReader;
+import net.minecraft.world.IWorld;
+import net.minecraft.world.World;
 import net.minecraftforge.fml.RegistryObject;
 
 import javax.annotation.Nonnull;
@@ -82,8 +85,8 @@ public class BlockTurtle extends BlockComputerBase<TileTurtle> implements IWater
     public VoxelShape getShape( @Nonnull BlockState state, IBlockReader world, @Nonnull BlockPos pos, @Nonnull ISelectionContext context )
     {
         TileEntity tile = world.getTileEntity( pos );
-        Vec3d offset = tile instanceof TileTurtle ? ((TileTurtle) tile).getRenderOffset( 1.0f ) : Vec3d.ZERO;
-        return offset.equals( Vec3d.ZERO ) ? DEFAULT_SHAPE : DEFAULT_SHAPE.withOffset( offset.x, offset.y, offset.z );
+        Vector3d offset = tile instanceof TileTurtle ? ((TileTurtle) tile).getRenderOffset( 1.0f ) : Vector3d.ZERO;
+        return offset.equals( Vector3d.ZERO ) ? DEFAULT_SHAPE : DEFAULT_SHAPE.withOffset( offset.x, offset.y, offset.z );
     }
 
     @Nullable
@@ -98,7 +101,7 @@ public class BlockTurtle extends BlockComputerBase<TileTurtle> implements IWater
     @Nonnull
     @Override
     @Deprecated
-    public IFluidState getFluidState( @Nonnull BlockState state )
+    public FluidState getFluidState( @Nonnull BlockState state )
     {
         return getWaterloggedFluidState( state );
     }
@@ -151,14 +154,15 @@ public class BlockTurtle extends BlockComputerBase<TileTurtle> implements IWater
     }
 
     @Override
-    public float getExplosionResistance( BlockState state, IWorldReader world, BlockPos pos, @Nullable Entity exploder, Explosion explosion )
+    public float getExplosionResistance( BlockState state, IBlockReader world, BlockPos pos, Explosion explosion )
     {
+        Entity exploder = explosion.getExploder();
         if( getFamily() == ComputerFamily.ADVANCED || exploder instanceof LivingEntity || exploder instanceof DamagingProjectileEntity )
         {
             return 2000;
         }
 
-        return super.getExplosionResistance( state, world, pos, exploder, explosion );
+        return super.getExplosionResistance( state, world, pos, explosion );
     }
 
     @Nonnull

src/main/java/dan200/computercraft/shared/turtle/blocks/ITurtleTile.java

@@ -10,7 +10,7 @@ import dan200.computercraft.api.turtle.ITurtleUpgrade;
 import dan200.computercraft.api.turtle.TurtleSide;
 import dan200.computercraft.shared.computer.blocks.IComputerTile;
 import net.minecraft.util.ResourceLocation;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 
 public interface ITurtleTile extends IComputerTile
 {
@@ -22,7 +22,7 @@ public interface ITurtleTile extends IComputerTile
 
     ITurtleAccess getAccess();
 
-    Vec3d getRenderOffset( float f );
+    Vector3d getRenderOffset( float f );
 
     float getRenderYaw( float f );
 

src/main/java/dan200/computercraft/shared/turtle/blocks/TileTurtle.java

@@ -23,6 +23,7 @@ import dan200.computercraft.shared.turtle.apis.TurtleAPI;
 import dan200.computercraft.shared.turtle.core.TurtleBrain;
 import dan200.computercraft.shared.turtle.inventory.ContainerTurtle;
 import dan200.computercraft.shared.util.*;
+import net.minecraft.block.BlockState;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.inventory.container.Container;
@@ -36,7 +37,7 @@ import net.minecraft.tileentity.TileEntityType;
 import net.minecraft.util.*;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.BlockRayTraceResult;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraftforge.common.capabilities.Capability;
 import net.minecraftforge.common.util.Constants;
 import net.minecraftforge.common.util.LazyOptional;
@@ -256,9 +257,9 @@ public class TileTurtle extends TileComputerBase implements ITurtleTile, Default
     }
 
     @Override
-    public void read( @Nonnull CompoundNBT nbt )
+    public void read( @Nonnull BlockState state, @Nonnull CompoundNBT nbt )
     {
-        super.read( nbt );
+        super.read( state, nbt );
 
         // Read inventory
         ListNBT nbttaglist = nbt.getList( "Items", Constants.NBT.TAG_COMPOUND );
@@ -353,7 +354,7 @@ public class TileTurtle extends TileComputerBase implements ITurtleTile, Default
     }
 
     @Override
-    public Vec3d getRenderOffset( float f )
+    public Vector3d getRenderOffset( float f )
     {
         return m_brain.getRenderOffset( f );
     }

src/main/java/dan200/computercraft/shared/turtle/core/TurtleBrain.java

@@ -26,7 +26,7 @@ import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.MoverType;
-import net.minecraft.fluid.IFluidState;
+import net.minecraft.fluid.FluidState;
 import net.minecraft.inventory.IInventory;
 import net.minecraft.item.DyeColor;
 import net.minecraft.nbt.CompoundNBT;
@@ -38,7 +38,7 @@ import net.minecraft.util.EntityPredicates;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 import net.minecraftforge.common.util.Constants;
 import net.minecraftforge.items.IItemHandlerModifiable;
@@ -309,7 +309,7 @@ public class TurtleBrain implements ITurtleAccess
         // Ensure we're inside the world border
         if( !world.getWorldBorder().contains( pos ) ) return false;
 
-        IFluidState existingFluid = world.getBlockState( pos ).getFluidState();
+        FluidState existingFluid = world.getBlockState( pos ).getFluidState();
         BlockState newState = oldBlock
             // We only mark this as waterlogged when travelling into a source block. This prevents us from spreading
             // fluid by creating a new source when moving into a block, causing the next block to be almost full and
@@ -362,11 +362,11 @@ public class TurtleBrain implements ITurtleAccess
 
     @Nonnull
     @Override
-    public Vec3d getVisualPosition( float f )
+    public Vector3d getVisualPosition( float f )
     {
-        Vec3d offset = getRenderOffset( f );
+        Vector3d offset = getRenderOffset( f );
         BlockPos pos = m_owner.getPos();
-        return new Vec3d(
+        return new Vector3d(
             pos.getX() + 0.5 + offset.x,
             pos.getY() + 0.5 + offset.y,
             pos.getZ() + 0.5 + offset.z
@@ -664,7 +664,7 @@ public class TurtleBrain implements ITurtleAccess
         m_owner.updateBlock();
     }
 
-    public Vec3d getRenderOffset( float f )
+    public Vector3d getRenderOffset( float f )
     {
         switch( m_animation )
         {
@@ -693,7 +693,7 @@ public class TurtleBrain implements ITurtleAccess
                 }
 
                 double distance = -1.0 + getAnimationFraction( f );
-                return new Vec3d(
+                return new Vector3d(
                     distance * dir.getXOffset(),
                     distance * dir.getYOffset(),
                     distance * dir.getZOffset()
@@ -701,7 +701,7 @@ public class TurtleBrain implements ITurtleAccess
             }
             default:
             {
-                return Vec3d.ZERO;
+                return Vector3d.ZERO;
             }
         }
     }
@@ -885,7 +885,7 @@ public class TurtleBrain implements ITurtleAccess
                         double pushStepZ = moveDir.getZOffset() * pushStep;
                         for( Entity entity : list )
                         {
-                            entity.move( MoverType.PISTON, new Vec3d( pushStepX, pushStepY, pushStepZ ) );
+                            entity.move( MoverType.PISTON, new Vector3d( pushStepX, pushStepY, pushStepZ ) );
                         }
                     }
                 }
@@ -898,7 +898,7 @@ public class TurtleBrain implements ITurtleAccess
                 Holiday currentHoliday = HolidayUtil.getCurrentHoliday();
                 if( currentHoliday == Holiday.VALENTINES )
                 {
-                    Vec3d position = getVisualPosition( 1.0f );
+                    Vector3d position = getVisualPosition( 1.0f );
                     if( position != null )
                     {
                         double x = position.x + world.rand.nextGaussian() * 0.1;

src/main/java/dan200/computercraft/shared/turtle/core/TurtlePlaceCommand.java

@@ -28,7 +28,7 @@ import net.minecraft.util.Direction;
 import net.minecraft.util.Hand;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.BlockRayTraceResult;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.util.text.StringTextComponent;
 import net.minecraft.world.World;
 import net.minecraftforge.common.ForgeHooks;
@@ -210,9 +210,9 @@ public class TurtlePlaceCommand implements ITurtleCommand
         // See if there is an entity present
         final World world = turtle.getWorld();
         final BlockPos position = turtle.getPosition();
-        Vec3d turtlePos = turtlePlayer.getPositionVec();
-        Vec3d rayDir = turtlePlayer.getLook( 1.0f );
-        Pair<Entity, Vec3d> hit = WorldUtil.rayTraceEntities( world, turtlePos, rayDir, 1.5 );
+        Vector3d turtlePos = turtlePlayer.getPositionVec();
+        Vector3d rayDir = turtlePlayer.getLook( 1.0f );
+        Pair<Entity, Vector3d> hit = WorldUtil.rayTraceEntities( world, turtlePos, rayDir, 1.5 );
         if( hit == null )
         {
             return stack;
@@ -224,7 +224,7 @@ public class TurtlePlaceCommand implements ITurtleCommand
 
         // Start claiming entity drops
         Entity hitEntity = hit.getKey();
-        Vec3d hitPos = hit.getValue();
+        Vector3d hitPos = hit.getValue();
         DropConsumer.set(
             hitEntity,
             drop -> InventoryUtil.storeItems( drop, turtle.getItemHandler(), turtle.getSelectedSlot() )
@@ -238,7 +238,7 @@ public class TurtlePlaceCommand implements ITurtleCommand
             cancelResult = hitEntity.applyPlayerInteraction( turtlePlayer, hitPos, Hand.MAIN_HAND );
         }
 
-        if( cancelResult == ActionResultType.SUCCESS )
+        if( cancelResult.isSuccessOrConsume() )
         {
             placed = true;
         }
@@ -246,19 +246,19 @@ public class TurtlePlaceCommand implements ITurtleCommand
         {
             // See EntityPlayer.interactOn
             cancelResult = ForgeHooks.onInteractEntity( turtlePlayer, hitEntity, Hand.MAIN_HAND );
-            if( cancelResult == ActionResultType.SUCCESS )
+            if( cancelResult != null && cancelResult.isSuccessOrConsume() )
             {
                 placed = true;
             }
             else if( cancelResult == null )
             {
-                if( hitEntity.processInitialInteract( turtlePlayer, Hand.MAIN_HAND ) )
+                if( hitEntity.processInitialInteract( turtlePlayer, Hand.MAIN_HAND ) == ActionResultType.CONSUME )
                 {
                     placed = true;
                 }
                 else if( hitEntity instanceof LivingEntity )
                 {
-                    placed = stackCopy.interactWithEntity( turtlePlayer, (LivingEntity) hitEntity, Hand.MAIN_HAND );
+                    placed = stackCopy.interactWithEntity( turtlePlayer, (LivingEntity) hitEntity, Hand.MAIN_HAND ).isSuccessOrConsume();
                     if( placed ) turtlePlayer.loadInventory( stackCopy );
                 }
             }
@@ -338,7 +338,7 @@ public class TurtlePlaceCommand implements ITurtleCommand
         }
 
         // Check if there's something suitable to place onto
-        BlockRayTraceResult hit = new BlockRayTraceResult( new Vec3d( hitX, hitY, hitZ ), side, position, false );
+        BlockRayTraceResult hit = new BlockRayTraceResult( new Vector3d( hitX, hitY, hitZ ), side, position, false );
         ItemUseContext context = new ItemUseContext( turtlePlayer, Hand.MAIN_HAND, hit );
         if( !canDeployOnBlock( new BlockItemUseContext( context ), turtle, turtlePlayer, position, side, allowReplace, outErrorMessage ) )
         {
@@ -353,17 +353,15 @@ public class TurtlePlaceCommand implements ITurtleCommand
         TileEntity existingTile = turtle.getWorld().getTileEntity( position );
 
         // See PlayerInteractionManager.processRightClickBlock
-        // TODO: ^ Check we're still consistent.
         PlayerInteractEvent.RightClickBlock event = ForgeHooks.onRightClickBlock( turtlePlayer, Hand.MAIN_HAND, position, side );
         if( !event.isCanceled() )
         {
-            if( item.onItemUseFirst( stack, context ) == ActionResultType.SUCCESS )
+            if( item.onItemUseFirst( stack, context ).isSuccessOrConsume() )
             {
                 placed = true;
                 turtlePlayer.loadInventory( stackCopy );
             }
-            else if( event.getUseItem() != Event.Result.DENY &&
-                stackCopy.onItemUse( context ) == ActionResultType.SUCCESS )
+            else if( event.getUseItem() != Event.Result.DENY && stackCopy.onItemUse( context ).isSuccessOrConsume() )
             {
                 placed = true;
                 turtlePlayer.loadInventory( stackCopy );
@@ -373,14 +371,14 @@ public class TurtlePlaceCommand implements ITurtleCommand
         if( !placed && (item instanceof BucketItem || item instanceof BoatItem || item instanceof LilyPadItem || item instanceof GlassBottleItem) )
         {
             ActionResultType actionResult = ForgeHooks.onItemRightClick( turtlePlayer, Hand.MAIN_HAND );
-            if( actionResult == ActionResultType.SUCCESS )
+            if( actionResult != null && actionResult.isSuccessOrConsume() )
             {
                 placed = true;
             }
             else if( actionResult == null )
             {
                 ActionResult<ItemStack> result = stackCopy.useItemRightClick( turtle.getWorld(), turtlePlayer, Hand.MAIN_HAND );
-                if( result.getType() == ActionResultType.SUCCESS && !ItemStack.areItemStacksEqual( stack, result.getResult() ) )
+                if( result.getType().isSuccessOrConsume() && !ItemStack.areItemStacksEqual( stack, result.getResult() ) )
                 {
                     placed = true;
                     turtlePlayer.loadInventory( result.getResult() );
@@ -405,22 +403,22 @@ public class TurtlePlaceCommand implements ITurtleCommand
                     String s = (String) extraArguments[0];
                     String[] split = s.split( "\n" );
                     int firstLine = split.length <= 2 ? 1 : 0;
-                    for( int i = 0; i < signTile.signText.length; i++ )
+                    for( int i = 0; i < 4; i++ )
                     {
                         if( i >= firstLine && i < firstLine + split.length )
                         {
                             if( split[i - firstLine].length() > 15 )
                             {
-                                signTile.signText[i] = new StringTextComponent( split[i - firstLine].substring( 0, 15 ) );
+                                signTile.setText( i, new StringTextComponent( split[i - firstLine].substring( 0, 15 ) ) );
                             }
                             else
                             {
-                                signTile.signText[i] = new StringTextComponent( split[i - firstLine] );
+                                signTile.setText( i, new StringTextComponent( split[i - firstLine] ) );
                             }
                         }
                         else
                         {
-                            signTile.signText[i] = new StringTextComponent( "" );
+                            signTile.setText( i, new StringTextComponent( "" ) );
                         }
                     }
                     signTile.markDirty();

src/main/java/dan200/computercraft/shared/turtle/core/TurtlePlayer.java

@@ -26,7 +26,7 @@ import net.minecraft.tileentity.SignTileEntity;
 import net.minecraft.util.Direction;
 import net.minecraft.util.Hand;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.server.ServerWorld;
 import net.minecraftforge.common.util.FakePlayer;
 
@@ -150,9 +150,9 @@ public final class TurtlePlayer extends FakePlayer
     }
 
     @Override
-    public Vec3d getPositionVector()
+    public Vector3d getPositionVec()
     {
-        return getPositionVec();
+        return new Vector3d( getPosX(), getPosY(), getPosZ() );
     }
 
     @Override

src/main/java/dan200/computercraft/shared/turtle/upgrades/TurtleModem.java

@@ -16,7 +16,7 @@ import net.minecraft.nbt.CompoundNBT;
 import net.minecraft.util.Direction;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
@@ -44,10 +44,10 @@ public class TurtleModem extends AbstractTurtleUpgrade
 
         @Nonnull
         @Override
-        public Vec3d getPosition()
+        public Vector3d getPosition()
         {
             BlockPos turtlePos = turtle.getPosition();
-            return new Vec3d(
+            return new Vector3d(
                 turtlePos.getX(),
                 turtlePos.getY(),
                 turtlePos.getZ()

src/main/java/dan200/computercraft/shared/turtle/upgrades/TurtleSpeaker.java

@@ -16,7 +16,7 @@ import dan200.computercraft.shared.peripheral.speaker.SpeakerPeripheral;
 import net.minecraft.client.renderer.model.ModelResourceLocation;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
@@ -41,10 +41,10 @@ public class TurtleSpeaker extends AbstractTurtleUpgrade
         }
 
         @Override
-        public Vec3d getPosition()
+        public Vector3d getPosition()
         {
             BlockPos pos = turtle.getPosition();
-            return new Vec3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 );
+            return new Vector3d( pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5 );
         }
 
         @Override

src/main/java/dan200/computercraft/shared/turtle/upgrades/TurtleTool.java

@@ -20,12 +20,10 @@ import dan200.computercraft.shared.util.WorldUtil;
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
-import net.minecraft.client.renderer.Matrix4f;
-import net.minecraft.client.renderer.TransformationMatrix;
 import net.minecraft.entity.Entity;
-import net.minecraft.entity.SharedMonsterAttributes;
+import net.minecraft.entity.ai.attributes.Attributes;
 import net.minecraft.entity.item.ArmorStandEntity;
-import net.minecraft.fluid.IFluidState;
+import net.minecraft.fluid.FluidState;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.CompoundNBT;
@@ -34,7 +32,9 @@ import net.minecraft.util.DamageSource;
 import net.minecraft.util.Direction;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Matrix4f;
+import net.minecraft.util.math.vector.TransformationMatrix;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
@@ -121,7 +121,7 @@ public class TurtleTool extends AbstractTurtleUpgrade
     protected boolean canBreakBlock( BlockState state, World world, BlockPos pos, TurtlePlayer player )
     {
         Block block = state.getBlock();
-        return !state.isAir( world, pos )
+        return !state.isAir()
             && block != Blocks.BEDROCK
             && state.getPlayerRelativeBlockHardness( player, world, pos ) > 0
             && block.canEntityDestroy( state, world, pos, player );
@@ -143,9 +143,9 @@ public class TurtleTool extends AbstractTurtleUpgrade
         final TurtlePlayer turtlePlayer = TurtlePlaceCommand.createPlayer( turtle, position, direction );
 
         // See if there is an entity present
-        Vec3d turtlePos = turtlePlayer.getPositionVec();
-        Vec3d rayDir = turtlePlayer.getLook( 1.0f );
-        Pair<Entity, Vec3d> hit = WorldUtil.rayTraceEntities( world, turtlePos, rayDir, 1.5 );
+        Vector3d turtlePos = turtlePlayer.getPositionVec();
+        Vector3d rayDir = turtlePlayer.getLook( 1.0f );
+        Pair<Entity, Vector3d> hit = WorldUtil.rayTraceEntities( world, turtlePos, rayDir, 1.5 );
         if( hit != null )
         {
             // Load up the turtle's inventory
@@ -173,7 +173,7 @@ public class TurtleTool extends AbstractTurtleUpgrade
             boolean attacked = false;
             if( !hitEntity.hitByEntity( turtlePlayer ) )
             {
-                float damage = (float) turtlePlayer.getAttribute( SharedMonsterAttributes.ATTACK_DAMAGE ).getValue();
+                float damage = (float) turtlePlayer.getAttributeValue( Attributes.ATTACK_DAMAGE );
                 damage *= getDamageMultiplier();
                 if( damage > 0.0f )
                 {
@@ -227,7 +227,7 @@ public class TurtleTool extends AbstractTurtleUpgrade
         }
 
         BlockState state = world.getBlockState( blockPosition );
-        IFluidState fluidState = world.getFluidState( blockPosition );
+        FluidState fluidState = world.getFluidState( blockPosition );
 
         TurtlePlayer turtlePlayer = TurtlePlaceCommand.createPlayer( turtle, turtlePosition, direction );
         turtlePlayer.loadInventory( item.copy() );

src/main/java/dan200/computercraft/shared/util/ColourUtils.java

@@ -8,7 +8,7 @@ package dan200.computercraft.shared.util;
 import net.minecraft.item.DyeColor;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
-import net.minecraft.tags.Tag;
+import net.minecraft.tags.ITag;
 import net.minecraftforge.common.Tags;
 
 import javax.annotation.Nullable;
@@ -16,7 +16,7 @@ import javax.annotation.Nullable;
 public final class ColourUtils
 {
     @SuppressWarnings( { "unchecked", "rawtypes" } )
-    private static final Tag<Item>[] DYES = new Tag[] {
+    private static final ITag<Item>[] DYES = new ITag[] {
         Tags.Items.DYES_WHITE,
         Tags.Items.DYES_ORANGE,
         Tags.Items.DYES_MAGENTA,
@@ -44,7 +44,7 @@ public final class ColourUtils
 
         for( int i = 0; i < DYES.length; i++ )
         {
-            Tag<Item> dye = DYES[i];
+            ITag<Item> dye = DYES[i];
             if( dye.contains( stack.getItem() ) ) return DyeColor.byId( i );
         }
 

src/main/java/dan200/computercraft/shared/util/DropConsumer.java

@@ -77,7 +77,7 @@ public final class DropConsumer
     {
         // Capture any nearby item spawns
         if( dropWorld == event.getWorld() && event.getEntity() instanceof ItemEntity
-            && dropBounds.contains( event.getEntity().getPositionVector() ) )
+            && dropBounds.contains( event.getEntity().getPositionVec() ) )
         {
             handleDrops( ((ItemEntity) event.getEntity()).getItem() );
             event.setCanceled( true );

src/main/java/dan200/computercraft/shared/util/FakeNetHandler.java

@@ -16,7 +16,6 @@ import net.minecraftforge.common.util.FakePlayer;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
-import javax.crypto.SecretKey;
 
 public class FakeNetHandler extends ServerPlayNetHandler
 {
@@ -65,11 +64,6 @@ public class FakeNetHandler extends ServerPlayNetHandler
     {
     }
 
-    @Override
-    public void handleRecipeBookUpdate( @Nonnull CRecipeInfoPacket packet )
-    {
-    }
-
     @Override
     public void handleSeenAdvancements( @Nonnull CSeenAdvancementsPacket packet )
     {
@@ -327,11 +321,6 @@ public class FakeNetHandler extends ServerPlayNetHandler
             this.closeReason = message;
         }
 
-        @Override
-        public void enableEncryption( @Nonnull SecretKey key )
-        {
-        }
-
         @Nonnull
         @Override
         public INetHandler getNetHandler()

src/main/java/dan200/computercraft/shared/util/IDAssigner.java

@@ -10,7 +10,7 @@ import com.google.gson.GsonBuilder;
 import com.google.gson.reflect.TypeToken;
 import dan200.computercraft.ComputerCraft;
 import net.minecraft.server.MinecraftServer;
-import net.minecraft.world.dimension.DimensionType;
+import net.minecraft.world.storage.FolderName;
 import net.minecraftforge.fml.server.ServerLifecycleHooks;
 
 import java.io.File;
@@ -26,6 +26,7 @@ import java.util.Map;
 
 public final class IDAssigner
 {
+    private static final FolderName FOLDER = new FolderName( ComputerCraft.MOD_ID );
     private static final Gson GSON = new GsonBuilder().setPrettyPrinting().create();
     private static final Type ID_TOKEN = new TypeToken<Map<String, Integer>>()
     {
@@ -41,9 +42,7 @@ public final class IDAssigner
 
     public static File getDir()
     {
-        MinecraftServer server = ServerLifecycleHooks.getCurrentServer();
-        File worldDirectory = server.getWorld( DimensionType.OVERWORLD ).getSaveHandler().getWorldDirectory();
-        return new File( worldDirectory, ComputerCraft.MOD_ID );
+        return ServerLifecycleHooks.getCurrentServer().func_240776_a_( FOLDER ).toFile();
     }
 
     private static MinecraftServer getCachedServer()

src/main/java/dan200/computercraft/shared/util/InventoryUtil.java

@@ -12,7 +12,7 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.Direction;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 import net.minecraftforge.common.util.LazyOptional;
 import net.minecraftforge.items.CapabilityItemHandler;
@@ -63,16 +63,16 @@ public final class InventoryUtil
         }
 
         // Look for entity with inventory
-        Vec3d vecStart = new Vec3d(
+        Vector3d vecStart = new Vector3d(
             pos.getX() + 0.5 + 0.6 * side.getXOffset(),
             pos.getY() + 0.5 + 0.6 * side.getYOffset(),
             pos.getZ() + 0.5 + 0.6 * side.getZOffset()
         );
         Direction dir = side.getOpposite();
-        Vec3d vecDir = new Vec3d(
+        Vector3d vecDir = new Vector3d(
             dir.getXOffset(), dir.getYOffset(), dir.getZOffset()
         );
-        Pair<Entity, Vec3d> hit = WorldUtil.rayTraceEntities( world, vecStart, vecDir, 1.1 );
+        Pair<Entity, Vector3d> hit = WorldUtil.rayTraceEntities( world, vecStart, vecDir, 1.1 );
         if( hit != null )
         {
             Entity entity = hit.getKey();

src/main/java/dan200/computercraft/shared/util/RecordUtil.java

@@ -10,7 +10,7 @@ import dan200.computercraft.shared.network.NetworkMessage;
 import dan200.computercraft.shared.network.client.PlayRecordClientMessage;
 import net.minecraft.util.SoundEvent;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 
 public final class RecordUtil
@@ -20,6 +20,6 @@ public final class RecordUtil
     public static void playRecord( SoundEvent record, String recordInfo, World world, BlockPos pos )
     {
         NetworkMessage packet = record != null ? new PlayRecordClientMessage( pos, record, recordInfo ) : new PlayRecordClientMessage( pos );
-        NetworkHandler.sendToAllAround( packet, world, new Vec3d( pos ), 64 );
+        NetworkHandler.sendToAllAround( packet, world, Vector3d.copyCentered( pos ), 64 );
     }
 }

src/main/java/dan200/computercraft/shared/util/WaterloggableHelpers.java

@@ -6,8 +6,8 @@
 package dan200.computercraft.shared.util;
 
 import net.minecraft.block.BlockState;
+import net.minecraft.fluid.FluidState;
 import net.minecraft.fluid.Fluids;
-import net.minecraft.fluid.IFluidState;
 import net.minecraft.item.BlockItemUseContext;
 import net.minecraft.state.BooleanProperty;
 import net.minecraft.state.properties.BlockStateProperties;
@@ -34,7 +34,7 @@ public final class WaterloggableHelpers
      * @param state The current state
      * @return This waterlogged block's current fluid
      */
-    public static IFluidState getWaterloggedFluidState( BlockState state )
+    public static FluidState getWaterloggedFluidState( BlockState state )
     {
         return state.get( WATERLOGGED ) ? Fluids.WATER.getStillFluidState( false ) : Fluids.EMPTY.getDefaultState();
     }

src/main/java/dan200/computercraft/shared/util/WorldUtil.java

@@ -12,9 +12,14 @@ import net.minecraft.entity.item.ItemEntity;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.Direction;
-import net.minecraft.util.math.*;
+import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.RayTraceContext;
+import net.minecraft.util.math.RayTraceResult;
 import net.minecraft.util.math.shapes.VoxelShape;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
+import net.minecraftforge.common.ForgeMod;
 import org.apache.commons.lang3.tuple.Pair;
 
 import javax.annotation.Nonnull;
@@ -56,7 +61,7 @@ public final class WorldUtil
         return world.getBlockState( pos ).getMaterial().isLiquid();
     }
 
-    public static boolean isVecInside( VoxelShape shape, Vec3d vec )
+    public static boolean isVecInside( VoxelShape shape, Vector3d vec )
     {
         if( shape.isEmpty() ) return false;
         // AxisAlignedBB.contains, but without strict inequalities.
@@ -64,9 +69,9 @@ public final class WorldUtil
         return vec.x >= bb.minX && vec.x <= bb.maxX && vec.y >= bb.minY && vec.y <= bb.maxY && vec.z >= bb.minZ && vec.z <= bb.maxZ;
     }
 
-    public static Pair<Entity, Vec3d> rayTraceEntities( World world, Vec3d vecStart, Vec3d vecDir, double distance )
+    public static Pair<Entity, Vector3d> rayTraceEntities( World world, Vector3d vecStart, Vector3d vecDir, double distance )
     {
-        Vec3d vecEnd = vecStart.add( vecDir.x * distance, vecDir.y * distance, vecDir.z * distance );
+        Vector3d vecEnd = vecStart.add( vecDir.x * distance, vecDir.y * distance, vecDir.z * distance );
 
         // Raycast for blocks
         Entity collisionEntity = getEntity( world );
@@ -105,7 +110,7 @@ public final class WorldUtil
                 continue;
             }
 
-            Vec3d littleBoxResult = littleBox.rayTrace( vecStart, vecEnd ).orElse( null );
+            Vector3d littleBoxResult = littleBox.rayTrace( vecStart, vecEnd ).orElse( null );
             if( littleBoxResult != null )
             {
                 double dist = vecStart.distanceTo( littleBoxResult );
@@ -126,21 +131,21 @@ public final class WorldUtil
         }
         if( closest != null && closestDist <= distance )
         {
-            Vec3d closestPos = vecStart.add( vecDir.x * closestDist, vecDir.y * closestDist, vecDir.z * closestDist );
+            Vector3d closestPos = vecStart.add( vecDir.x * closestDist, vecDir.y * closestDist, vecDir.z * closestDist );
             return Pair.of( closest, closestPos );
         }
         return null;
     }
 
-    public static Vec3d getRayStart( LivingEntity entity )
+    public static Vector3d getRayStart( LivingEntity entity )
     {
         return entity.getEyePosition( 1 );
     }
 
-    public static Vec3d getRayEnd( PlayerEntity player )
+    public static Vector3d getRayEnd( PlayerEntity player )
     {
-        double reach = player.getAttribute( PlayerEntity.REACH_DISTANCE ).getValue();
-        Vec3d look = player.getLookVec();
+        double reach = player.getAttribute( ForgeMod.REACH_DISTANCE.get() ).getValue();
+        Vector3d look = player.getLookVec();
         return getRayStart( player ).add( look.x * reach, look.y * reach, look.z * reach );
     }
 
@@ -170,15 +175,15 @@ public final class WorldUtil
         double xPos = pos.getX() + 0.5 + xDir * 0.4;
         double yPos = pos.getY() + 0.5 + yDir * 0.4;
         double zPos = pos.getZ() + 0.5 + zDir * 0.4;
-        dropItemStack( stack, world, new Vec3d( xPos, yPos, zPos ), xDir, yDir, zDir );
+        dropItemStack( stack, world, new Vector3d( xPos, yPos, zPos ), xDir, yDir, zDir );
     }
 
-    public static void dropItemStack( @Nonnull ItemStack stack, World world, Vec3d pos )
+    public static void dropItemStack( @Nonnull ItemStack stack, World world, Vector3d pos )
     {
         dropItemStack( stack, world, pos, 0.0, 0.0, 0.0 );
     }
 
-    public static void dropItemStack( @Nonnull ItemStack stack, World world, Vec3d pos, double xDir, double yDir, double zDir )
+    public static void dropItemStack( @Nonnull ItemStack stack, World world, Vector3d pos, double xDir, double yDir, double zDir )
     {
         ItemEntity item = new ItemEntity( world, pos.x, pos.y, pos.z, stack.copy() );
         item.setMotion(

src/main/java/dan200/computercraft/shared/wired/WiredNetwork.java

@@ -10,7 +10,7 @@ import dan200.computercraft.api.network.Packet;
 import dan200.computercraft.api.network.wired.IWiredNetwork;
 import dan200.computercraft.api.network.wired.IWiredNode;
 import dan200.computercraft.api.peripheral.IPeripheral;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 import net.minecraft.world.World;
 
 import javax.annotation.Nonnull;
@@ -337,7 +337,7 @@ public final class WiredNetwork implements IWiredNetwork
             while( (point = transmitTo.pollFirst()) != null )
             {
                 World world = point.node.element.getWorld();
-                Vec3d position = point.node.element.getPosition();
+                Vector3d position = point.node.element.getPosition();
                 for( WiredNode neighbour : point.node.neighbours )
                 {
                     TransmitPoint neighbourPoint = points.get( neighbour );

src/main/resources/META-INF/accesstransformer.cfg

@@ -2,3 +2,6 @@
 public net.minecraft.client.renderer.FirstPersonRenderer func_178100_c(F)F # getMapAngleFromPitch
 public net.minecraft.client.renderer.FirstPersonRenderer func_228401_a_(Lcom/mojang/blaze3d/matrix/MatrixStack;Lnet/minecraft/client/renderer/IRenderTypeBuffer;IFFLnet/minecraft/util/HandSide;)V # renderArmFirstPerson
 public net.minecraft.client.renderer.FirstPersonRenderer func_228403_a_(Lcom/mojang/blaze3d/matrix/MatrixStack;Lnet/minecraft/client/renderer/IRenderTypeBuffer;ILnet/minecraft/util/HandSide;)V # renderArm
+# ClientTableFormatter
+public net.minecraft.client.gui.NewChatGui func_146234_a(Lnet/minecraft/util/text/ITextComponent;I)V # printChatMessageWithOptionalDeletion
+public net.minecraft.client.gui.NewChatGui func_146242_c(I)V # deleteChatLine

src/main/resources/META-INF/mods.toml

@@ -1,5 +1,5 @@
 modLoader="javafml"
-loaderVersion="[31,32)"
+loaderVersion="[35,36)"
 
 issueTrackerURL="https://github.com/SquidDev-CC/CC-Tweaked/issues"
 displayURL="https://github.com/SquidDev-CC/CC-Tweaked"
@@ -7,6 +7,7 @@ logoFile="pack.png"
 
 credits="Created by Daniel Ratcliffe (@DanTwoHundred)"
 authors="Daniel Ratcliffe, Aaron Mills, SquidDev"
+license="ComputerCraft Public License (https://raw.githubusercontent.com/dan200/ComputerCraft/master/LICENSE)"
 
 [[mods]]
 modId="computercraft"
@@ -19,6 +20,6 @@ CC: Tweaked is a fork of ComputerCraft, adding programmable computers, turtles a
 [[dependencies.computercraft]]
     modId="forge"
     mandatory=true
-    versionRange="[31.1.41,32)"
+    versionRange="[35.0.1,36)"
     ordering="NONE"
     side="BOTH"

src/main/resources/data/computercraft/lua/rom/help/changelog.txt

@@ -66,21 +66,38 @@ And several bug fixes:
 * Correctly handle tabs within textutils.unserailizeJSON.
 * Fix sheep not dropping items when sheared by turtles.
 
+# New features in CC: Tweaked 1.91.1
+
+* Fix crash when turtles interact with an entity.
+
 # New features in CC: Tweaked 1.91.0
 
 * [Generic peripherals] Expose NBT hashes of items to inventory methods.
 * Bump Cobalt version
   * Optimise handling of string concatenation.
   * Add string.{pack,unpack,packsize} (MCJack123)
+* Update to 1.16.2
 
 And several bug fixes:
 * Escape non-ASCII characters in JSON strings (neumond)
 * Make field names in fs.attributes more consistent (abby)
 * Fix textutils.formatTime correctly handle 12 AM (R93950X)
+* Fix turtles placing buckets multiple times.
+
+# New features in CC: Tweaked 1.90.3
+
+* Fix the selected slot indicator missing from the turtle GUI.
+* Ensure we load/save computer data from the world directory, rather than a global one.
 
 # New features in CC: Tweaked 1.90.2
 
 * Fix generic peripherals not being registered outside a dev environment.
+* Fix `turtle.attack()` failing.
+* Correctly set styles for the output of `/computercraft` commands.
+
+# New features in CC: Tweaked 1.90.1
+
+* Update to Forge 32.0.69
 
 # New features in CC: Tweaked 1.90.0