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

I think, haven't actually tested this :D:. Closes #730.

CONTRIBUTING.md

@@ -51,18 +51,10 @@ illuaminate, which spits out our HTML.
 For various reasons, getting the environment set up to build documentation can be pretty complex. I'd quite like to
 automate this via Docker and/or nix in the future, but this needs to be done manually for now.
 
-First, you will need JDK 9+ (in addition to JDK 8 which is required to build Minecraft itself). Sadly our version of
-Gradle doesn't support multiple toolchains, and so you need to install this yourself.
-
-Gradle needs to be told about this JDK via the `JAVA_HOME_11_X64` environment variable or adding `java11Home` to 
-`~/.gradle/gradle.properties`. On my system this looks like:
-
-```properties
-java11Home=/usr/lib/jvm/java-11-openjdk/
-```
-
-If you just want to build the documentation stubs for linting, this is enough. However, if you want to build the full
-website, you will also need to install a few Node packages by running `npm ci`.
+This tooling is only needed if you need to build the whole website. If you just want to generate the Lua stubs, you can
+skp this section.
+ - Install Node/npm and install our Node packages with `npm ci`.
+ - Install [illuaminate][illuaminate-usage] as described above.
 
 #### Building documentation
 Gradle should be your entrypoint to building most documentation. There's two tasks which are of interest:

build.gradle

@@ -6,12 +6,17 @@ buildscript {
             name = "forge"
             url = "https://files.minecraftforge.net/maven"
         }
+        maven {
+            name = "Sponge (Mixin)"
+            url = "https://repo.spongepowered.org/repository/maven-public/"
+            content { includeGroup "org.spongepowered" }
+        }
     }
     dependencies {
         classpath 'com.google.code.gson:gson:2.8.1'
-        classpath 'net.minecraftforge.gradle:ForgeGradle:3.0.190'
+        classpath 'net.minecraftforge.gradle:ForgeGradle:4.1.3'
         classpath 'net.sf.proguard:proguard-gradle:6.1.0beta2'
-        classpath 'org.ajoberstar.grgit:grgit-gradle:3.0.0'
+        classpath 'org.spongepowered:mixingradle:0.7-SNAPSHOT'
     }
 }
 
@@ -19,13 +24,13 @@ plugins {
     id "checkstyle"
     id "jacoco"
     id "com.github.hierynomus.license" version "0.15.0"
-    id "com.matthewprenger.cursegradle" version "1.3.0"
-    id "com.github.breadmoirai.github-release" version "2.2.4"
+    id "com.matthewprenger.cursegradle" version "1.4.0"
+    id "com.github.breadmoirai.github-release" version "2.2.12"
     id "org.jetbrains.kotlin.jvm" version "1.3.72"
 }
 
 apply plugin: 'net.minecraftforge.gradle'
-apply plugin: 'org.ajoberstar.grgit'
+apply plugin: 'org.spongepowered.mixin'
 apply plugin: 'maven-publish'
 apply plugin: 'maven'
 
@@ -34,7 +39,11 @@ version = mod_version
 group = "org.squiddev"
 archivesBaseName = "cc-tweaked-${mc_version}"
 
-sourceCompatibility = targetCompatibility = compileJava.sourceCompatibility = compileJava.targetCompatibility = '1.8'
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(8)
+    }
+}
 
 minecraft {
     runs {
@@ -79,6 +88,10 @@ minecraft {
         testServer {
             workingDirectory project.file('test-files/server')
             parent runs.server
+            properties 'mixin.env.disableRefMap': 'true'
+
+            arg "-mixin.config=cctest.mixin.json"
+            arg "--nogui"
 
             mods {
                 cctest {
@@ -88,11 +101,15 @@ minecraft {
         }
     }
 
-    mappings channel: 'official', version: project.mc_version
+    mappings channel: 'official', version: mc_version
 
     accessTransformer file('src/main/resources/META-INF/accesstransformer.cfg')
 }
 
+mixin {
+    add sourceSets.test, "cctest.refmap.json"
+}
+
 sourceSets {
     main.resources {
         srcDir 'src/generated/resources'
@@ -119,10 +136,10 @@ 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'
@@ -158,11 +175,10 @@ task luaJavadoc(type: Javadoc) {
 
     options.docletpath = configurations.cctJavadoc.files as List
     options.doclet = "cc.tweaked.javadoc.LuaDoclet"
+    options.noTimestamp = false
 
-    // Attempt to run under Java 11 (any Java >= 9 will work though).
-    if(System.getProperty("java.version").startsWith("1.")
-        && (System.getenv("JAVA_HOME_11_X64") != null || project.hasProperty("java11Home"))) {
-        executable = "${System.getenv("JAVA_HOME_11_X64") ?: project.property("java11Home")}/bin/javadoc"
+    javadocTool = javaToolchains.javadocToolFor {
+        languageVersion = JavaLanguageVersion.of(11)
     }
 }
 
@@ -200,7 +216,6 @@ import com.google.gson.GsonBuilder
 import com.google.gson.JsonElement
 import com.hierynomus.gradle.license.tasks.LicenseCheck
 import com.hierynomus.gradle.license.tasks.LicenseFormat
-import org.ajoberstar.grgit.Grgit
 import proguard.gradle.ProGuardTask
 
 task proguard(type: ProGuardTask, dependsOn: jar) {
@@ -253,16 +268,15 @@ processResources {
     def hash = 'none'
     Set<String> contributors = []
     try {
-        def grgit = Grgit.open(dir: '.')
-        hash = grgit.head().id
+        hash = ["git", "-C", projectDir, "rev-parse", "HEAD"].execute().text.trim()
 
         def blacklist = ['GitHub', 'dan200', 'Daniel Ratcliffe']
-        grgit.log().each {
-            if (!blacklist.contains(it.author.name)) contributors.add(it.author.name)
-            if (!blacklist.contains(it.committer.name)) contributors.add(it.committer.name)
+        ["git", "-C", projectDir, "log", "--format=tformat:%an%n%cn"].execute().text.split('\n').each {
+            if (!blacklist.contains(it)) contributors.add(it)
         }
-    } catch(Exception ignored) { }
-
+    } catch(Exception e) {
+        e.printStackTrace()
+    }
     inputs.property "commithash", hash
 
     from(sourceSets.main.resources.srcDirs) {
@@ -483,8 +497,8 @@ tasks.register('jacocoTestInGameReport', JacocoReport.class).configure {
     it.dependsOn('testInGame')
 
     it.executionData(new File(buildDir, 'jacoco/testInGame.exec'))
-    it.setSourceDirectories(project.files(sourceSets.main.allJava.srcDirs))
-    it.setClassDirectories(project.files(new File(buildDir, 'jacocoClassDump/testInGame')))
+    it.sourceDirectories.from(sourceSets.main.allJava.srcDirs)
+    it.classDirectories.from(new File(buildDir, 'jacocoClassDump/testInGame'))
 
     it.reports {
         xml.enabled true
@@ -546,6 +560,9 @@ curseforge {
         relations {
             incompatible "computercraft"
         }
+
+        addGameVersion '1.16.4'
+        addGameVersion '1.16.5'
     }
 }
 
@@ -606,18 +623,23 @@ githubRelease {
     token project.hasProperty('githubApiKey') ? project.githubApiKey : ''
     owner 'SquidDev-CC'
     repo 'CC-Tweaked'
-    try {
-        targetCommitish = Grgit.open(dir: '.').branch.current().name
-    } catch(Exception ignored) { }
+    targetCommitish.set(project.provider({
+        try {
+            return ["git", "-C", projectDir, "rev-parse", "--abbrev-ref", "HEAD"].execute().text.trim()
+        } catch (Exception e) {
+            e.printStackTrace()
+        }
+        return "master"
+    }))
 
     tagName "v${mc_version}-${mod_version}"
     releaseName "[${mc_version}] ${mod_version}"
-    body {
+    body.set(project.provider({
         "## " + new File(projectDir, "src/main/resources/data/computercraft/lua/rom/help/whatsnew.txt")
             .readLines()
             .takeWhile { it != 'Type "help changelog" to see the full version history.' }
             .join("\n").trim()
-    }
+    }))
     prerelease false
 }
 

doc/events/alarm.md

@@ -0,0 +1,21 @@
+---
+module: [kind=event] alarm
+see: os.setAlarm To start an alarm.
+---
+
+The @{timer} event is fired when an alarm started with @{os.setAlarm} completes.
+
+## Return Values
+1. @{string}: The event name.
+2. @{number}: The ID of the alarm that finished.
+
+## Example
+Starts a timer and then prints its ID:
+```lua
+local alarmID = os.setAlarm(os.time() + 0.05)
+local event, id
+repeat
+    event, id = os.pullEvent("alarm")
+until id == alarmID
+print("Alarm with ID " .. id .. " was fired")
+```

doc/events/computer_command.md

@@ -0,0 +1,18 @@
+---
+module: [kind=event] computer_command
+---
+
+The @{computer_command} event is fired when the `/computercraft queue` command is run for the current computer.
+
+## Return Values
+1. @{string}: The event name.
+... @{string}: The arguments passed to the command.
+
+## Example
+Prints the contents of messages sent:
+```lua
+while true do
+  local event = {os.pullEvent("computer_command")}
+  print("Received message:", table.unpack(event, 2))
+end
+```

doc/events/disk.md

@@ -0,0 +1,19 @@
+---
+module: [kind=event] disk
+see: disk_eject For the event sent when a disk is removed.
+---
+
+The @{disk} event is fired when a disk is inserted into an adjacent or networked disk drive.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The side of the disk drive that had a disk inserted.
+
+## Example
+Prints a message when a disk is inserted:
+```lua
+while true do
+  local event, side = os.pullEvent("disk")
+  print("Inserted a disk on side " .. side)
+end
+```

doc/events/disk_eject.md

@@ -0,0 +1,19 @@
+---
+module: [kind=event] disk_eject
+see: disk For the event sent when a disk is inserted.
+---
+
+The @{disk_eject} event is fired when a disk is removed from an adjacent or networked disk drive.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The side of the disk drive that had a disk removed.
+
+## Example
+Prints a message when a disk is removed:
+```lua
+while true do
+  local event, side = os.pullEvent("disk_eject")
+  print("Removed a disk on side " .. side)
+end
+```

doc/events/http_check.md

@@ -0,0 +1,14 @@
+---
+module: [kind=event] http_check
+see: http.checkURLAsync To check a URL asynchronously.
+---
+
+The @{http_check} event is fired when a URL check finishes.
+
+This event is normally handled inside @{http.checkURL}, but it can still be seen when using @{http.checkURLAsync}.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The URL requested to be checked.
+3. @{boolean}: Whether the check succeeded.
+4. @{string|nil}: If the check failed, a reason explaining why the check failed.

doc/events/http_failure.md

@@ -0,0 +1,39 @@
+---
+module: [kind=event] http_failure
+see: http.request To send an HTTP request.
+---
+
+The @{http_failure} event is fired when an HTTP request fails.
+
+This event is normally handled inside @{http.get} and @{http.post}, but it can still be seen when using @{http.request}.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The URL of the site requested.
+3. @{string}: An error describing the failure.
+4. @{http.Response|nil}: A response handle if the connection succeeded, but the server's response indicated failure.
+
+## Example
+Prints an error why the website cannot be contacted:
+```lua
+local myURL = "https://does.not.exist.tweaked.cc"
+http.request(myURL)
+local event, url, err
+repeat
+    event, url, err = os.pullEvent("http_failure")
+until url == myURL
+print("The URL " .. url .. " could not be reached: " .. err)
+```
+
+Prints the contents of a webpage that does not exist:
+```lua
+local myURL = "https://tweaked.cc/this/does/not/exist"
+http.request(myURL)
+local event, url, err, handle
+repeat
+    event, url, err, handle = os.pullEvent("http_failure")
+until url == myURL
+print("The URL " .. url .. " could not be reached: " .. err)
+print(handle.getResponseCode())
+handle.close()
+```

doc/events/http_success.md

@@ -0,0 +1,27 @@
+---
+module: [kind=event] http_success
+see: http.request To make an HTTP request.
+---
+
+The @{http_success} event is fired when an HTTP request returns successfully.
+
+This event is normally handled inside @{http.get} and @{http.post}, but it can still be seen when using @{http.request}.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The URL of the site requested.
+3. @{http.Response}: The handle for the response text.
+
+## Example
+Prints the content of a website (this may fail if the request fails):
+```lua
+local myURL = "https://tweaked.cc/"
+http.request(myURL)
+local event, url, handle
+repeat
+    event, url, handle = os.pullEvent("http_success")
+until url == myURL
+print("Contents of " .. url .. ":")
+print(handle.readAll())
+handle.close()
+```

doc/events/key.md

@@ -11,9 +11,9 @@ If the button pressed represented a printable character, then the @{key} event w
 event. If you are consuming text input, use a @{char} event instead!
 
 ## Return values
-1. [`string`]: The event name.
-2. [`number`]: The numerical key value of the key pressed.
-3. [`boolean`]: Whether the key event was generated while holding the key (@{true}), rather than pressing it the first time (@{false}).
+1. @{string}: The event name.
+2. @{number}: The numerical key value of the key pressed.
+3. @{boolean}: Whether the key event was generated while holding the key (@{true}), rather than pressing it the first time (@{false}).
 
 ## Example
 Prints each key when the user presses it, and if the key is being held.

doc/events/modem_message.md

@@ -0,0 +1,22 @@
+---
+module: [kind=event] modem_message
+---
+
+The @{modem_message} event is fired when a message is received on an open channel on any modem.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The side of the modem that received the message.
+3. @{number}: The channel that the message was sent on.
+4. @{number}: The reply channel set by the sender.
+5. @{any}: The message as sent by the sender.
+6. @{number}: The distance between the sender and the receiver, in blocks (decimal).
+
+## Example
+Prints a message when one is sent:
+```lua
+while true do
+  local event, side, channel, replyChannel, message, distance = os.pullEvent("modem_message")
+  print(("Message received on side %s on channel %d (reply to %d) from %f blocks away with message %s"):format(side, channel, replyChannel, distance, tostring(message)))
+end
+```

doc/events/monitor_resize.md

@@ -0,0 +1,18 @@
+---
+module: [kind=event] monitor_resize
+---
+
+The @{monitor_resize} event is fired when an adjacent or networked monitor's size is changed.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The side or network ID of the monitor that resized.
+
+## Example
+Prints a message when a monitor is resized:
+```lua
+while true do
+  local event, side = os.pullEvent("monitor_resize")
+  print("The monitor on side " .. side .. " was resized.")
+end
+```

doc/events/monitor_touch.md

@@ -0,0 +1,20 @@
+---
+module: [kind=event] monitor_touch
+---
+
+The @{monitor_touch} event is fired when an adjacent or networked Advanced Monitor is right-clicked.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The side or network ID of the monitor that was touched.
+3. @{number}: The X coordinate of the touch, in characters.
+4. @{number}: The Y coordinate of the touch, in characters.
+
+## Example
+Prints a message when a monitor is touched:
+```lua
+while true do
+  local event, side, x, y = os.pullEvent("monitor_touch")
+  print("The monitor on side " .. side .. " was touched at (" .. x .. ", " .. y .. ")")
+end
+```

doc/events/mouse_drag.md

@@ -20,5 +20,3 @@ while true do
   print(("The mouse button %s was dragged at %d, %d"):format(button, x, y))
 end
 ```
-
-

doc/events/mouse_up.md

@@ -19,6 +19,3 @@ while true do
   print(("The mouse button %s was released at %d, %d"):format(button, x, y))
 end
 ```
-
-[`string`]: string
-[`number`]: number

doc/events/paste.md

@@ -0,0 +1,18 @@
+---
+module: [kind=event] paste
+---
+
+The @{paste} event is fired when text is pasted into the computer through Ctrl-V (or ⌘V on Mac).
+
+## Return values
+1. @{string}: The event name.
+2. @{string} The text that was pasted.
+
+## Example
+Prints pasted text:
+```lua
+while true do
+  local event, text = os.pullEvent("paste")
+  print('"' .. text .. '" was pasted')
+end
+```

doc/events/peripheral.md

@@ -0,0 +1,19 @@
+---
+module: [kind=event] peripheral
+see: peripheral_detach For the event fired when a peripheral is detached.
+---
+
+The @{peripheral} event is fired when a peripheral is attached on a side or to a modem.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The side the peripheral was attached to.
+
+## Example
+Prints a message when a peripheral is attached:
+```lua
+while true do
+  local event, side = os.pullEvent("peripheral")
+  print("A peripheral was attached on side " .. side)
+end
+```

doc/events/peripheral_detach.md

@@ -0,0 +1,19 @@
+---
+module: [kind=event] peripheral_detach
+see: peripheral For the event fired when a peripheral is attached.
+---
+
+The @{peripheral_detach} event is fired when a peripheral is detached from a side or from a modem.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The side the peripheral was detached from.
+
+## Example
+Prints a message when a peripheral is detached:
+```lua
+while true do
+  local event, side = os.pullEvent("peripheral_detach")
+  print("A peripheral was detached on side " .. side)
+end
+```

doc/events/rednet_message.md

@@ -0,0 +1,30 @@
+---
+module: [kind=event] rednet_message
+see: modem_message For raw modem messages sent outside of Rednet.
+see: rednet.receive To wait for a Rednet message with an optional timeout and protocol filter.
+---
+
+The @{rednet_message} event is fired when a message is sent over Rednet.
+
+This event is usually handled by @{rednet.receive}, but it can also be pulled manually.
+
+@{rednet_message} events are sent by @{rednet.run} in the top-level coroutine in response to @{modem_message} events. A @{rednet_message} event is always preceded by a @{modem_message} event. They are generated inside CraftOS rather than being sent by the ComputerCraft machine.
+
+## Return Values
+1. @{string}: The event name.
+2. @{number}: The ID of the sending computer.
+3. @{any}: The message sent.
+4. @{string|nil}: The protocol of the message, if provided.
+
+## Example
+Prints a message when one is sent:
+```lua
+while true do
+  local event, sender, message, protocol = os.pullEvent("rednet_message")
+  if protocol ~= nil then
+    print("Received message from " .. sender .. " with protocol " .. protocol .. " and message " .. tostring(message))
+  else
+    print("Received message from " .. sender .. " with message " .. tostring(message))
+  end
+end
+```

doc/events/redstone.md

@@ -0,0 +1,14 @@
+---
+module: [kind=event] redstone
+---
+
+The @{redstone} event is fired whenever any redstone inputs on the computer change.
+
+## Example
+Prints a message when a redstone input changes:
+```lua
+while true do
+  os.pullEvent("redstone")
+  print("A redstone input has changed!")
+end
+```

doc/events/task_complete.md

@@ -0,0 +1,28 @@
+---
+module: [kind=event] task_complete
+see: commands.execAsync To run a command which fires a task_complete event.
+---
+
+The @{task_complete} event is fired when an asynchronous task completes. This is usually handled inside the function call that queued the task; however, functions such as @{commands.execAsync} return immediately so the user can wait for completion.
+
+## Return Values
+1. @{string}: The event name.
+2. @{number}: The ID of the task that completed.
+3. @{boolean}: Whether the command succeeded.
+4. @{string}: If the command failed, an error message explaining the failure. (This is not present if the command succeeded.)
+...: Any parameters returned from the command.
+
+## Example
+Prints the results of an asynchronous command:
+```lua
+local taskID = commands.execAsync("say Hello")
+local event
+repeat
+    event = {os.pullEvent("task_complete")}
+until event[2] == taskID
+if event[3] == true then
+  print("Task " .. event[2] .. " succeeded:", table.unpack(event, 4))
+else
+  print("Task " .. event[2] .. " failed: " .. event[4])
+end
+```

doc/events/term_resize.md

@@ -0,0 +1,15 @@
+---
+module: [kind=event] term_resize
+---
+
+The @{term_resize} event is fired when the main terminal is resized, mainly when a new tab is opened or closed in @{multishell}.
+
+## Example
+Prints :
+```lua
+while true do
+  os.pullEvent("term_resize")
+  local w, h = term.getSize()
+  print("The term was resized to (" .. w .. ", " .. h .. ")")
+end
+```

doc/events/terminate.md

@@ -0,0 +1,25 @@
+---
+module: [kind=event] terminate
+---
+
+The @{terminate} event is fired when <kbd>Ctrl-T</kbd> is held down.
+
+This event is normally handled by @{os.pullEvent}, and will not be returned. However, @{os.pullEventRaw} will return this event when fired.
+
+@{terminate} will be sent even when a filter is provided to @{os.pullEventRaw}. When using @{os.pullEventRaw} with a filter, make sure to check that the event is not @{terminate}.
+
+## Example
+Prints a message when Ctrl-T is held:
+```lua
+while true do
+  local event = os.pullEventRaw("terminate")
+  if event == "terminate" then print("Terminate requested!") end
+end
+```
+
+Exits when Ctrl-T is held:
+```lua
+while true do
+  os.pullEvent()
+end
+```

doc/events/timer.md

@@ -0,0 +1,21 @@
+---
+module: [kind=event] timer
+see: os.startTimer To start a timer.
+---
+
+The @{timer} event is fired when a timer started with @{os.startTimer} completes.
+
+## Return Values
+1. @{string}: The event name.
+2. @{number}: The ID of the timer that finished.
+
+## Example
+Starts a timer and then prints its ID:
+```lua
+local timerID = os.startTimer(2)
+local event, id
+repeat
+    event, id = os.pullEvent("timer")
+until id == timerID
+print("Timer with ID " .. id .. " was fired")
+```

doc/events/turtle_inventory.md

@@ -0,0 +1,14 @@
+---
+module: [kind=event] turtle_inventory
+---
+
+The @{turtle_inventory} event is fired when a turtle's inventory is changed.
+
+## Example
+Prints a message when the inventory is changed:
+```lua
+while true do
+  os.pullEvent("turtle_inventory")
+  print("The inventory was changed.")
+end
+```

doc/events/websocket_closed.md

@@ -0,0 +1,21 @@
+---
+module: [kind=event] websocket_closed
+---
+
+The @{websocket_closed} event is fired when an open WebSocket connection is closed.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The URL of the WebSocket that was closed.
+
+## Example
+Prints a message when a WebSocket is closed (this may take a minute):
+```lua
+local myURL = "wss://example.tweaked.cc/echo"
+local ws = http.websocket(myURL)
+local event, url
+repeat
+    event, url = os.pullEvent("websocket_closed")
+until url == myURL
+print("The WebSocket at " .. url .. " was closed.")
+```

doc/events/websocket_failure.md

@@ -0,0 +1,25 @@
+---
+module: [kind=event] websocket_failure
+see: http.websocketAsync To send an HTTP request.
+---
+
+The @{websocket_failure} event is fired when a WebSocket connection request fails.
+
+This event is normally handled inside @{http.websocket}, but it can still be seen when using @{http.websocketAsync}.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The URL of the site requested.
+3. @{string}: An error describing the failure.
+
+## Example
+Prints an error why the website cannot be contacted:
+```lua
+local myURL = "wss://example.tweaked.cc/not-a-websocket"
+http.websocketAsync(myURL)
+local event, url, err
+repeat
+    event, url, err = os.pullEvent("websocket_failure")
+until url == myURL
+print("The URL " .. url .. " could not be reached: " .. err)
+```

doc/events/websocket_message.md

@@ -0,0 +1,26 @@
+---
+module: [kind=event] websocket_message
+---
+
+The @{websocket_message} event is fired when a message is received on an open WebSocket connection.
+
+This event is normally handled by @{http.Websocket.receive}, but it can also be pulled manually.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The URL of the WebSocket.
+3. @{string}: The contents of the message.
+
+## Example
+Prints a message sent by a WebSocket:
+```lua
+local myURL = "wss://example.tweaked.cc/echo"
+local ws = http.websocket(myURL)
+ws.send("Hello!")
+local event, url, message
+repeat
+    event, url, message = os.pullEvent("websocket_message")
+until url == myURL
+print("Received message from " .. url .. " with contents " .. message)
+ws.close()
+```

doc/events/websocket_success.md

@@ -0,0 +1,28 @@
+---
+module: [kind=event] websocket_success
+see: http.websocketAsync To open a WebSocket asynchronously.
+---
+
+The @{websocket_success} event is fired when a WebSocket connection request returns successfully.
+
+This event is normally handled inside @{http.websocket}, but it can still be seen when using @{http.websocketAsync}.
+
+## Return Values
+1. @{string}: The event name.
+2. @{string}: The URL of the site.
+3. @{http.Websocket}: The handle for the WebSocket.
+
+## Example
+Prints the content of a website (this may fail if the request fails):
+```lua
+local myURL = "wss://example.tweaked.cc/echo"
+http.websocketAsync(myURL)
+local event, url, handle
+repeat
+    event, url, handle = os.pullEvent("websocket_success")
+until url == myURL
+print("Connected to " .. url)
+handle.send("Hello!")
+print(handle.receive())
+handle.close()
+```

doc/stub/http.lua

@@ -58,10 +58,10 @@ function request(...) end
 -- @treturn string A message detailing why the request failed.
 -- @treturn Response|nil The failing http response, if available.
 --
--- @usage Make a request to [example.computercraft.cc](https://example.computercraft.cc),
+-- @usage Make a request to [example.tweaked.cc](https://example.tweaked.cc),
 -- and print the returned page.
 -- ```lua
--- local request = http.get("https://example.computercraft.cc")
+-- local request = http.get("https://example.tweaked.cc")
 -- print(request.readAll())
 -- -- => HTTP is working!
 -- request.close()
@@ -123,7 +123,7 @@ function checkURLAsync(url) end
 --
 -- @usage
 -- ```lua
--- print(http.checkURL("https://example.computercraft.cc/"))
+-- print(http.checkURL("https://example.tweaked.cc/"))
 -- -- => true
 -- print(http.checkURL("http://localhost/"))
 -- -- => false Domain not permitted

gradle.properties

@@ -1,6 +1,6 @@
 # Mod properties
-mod_version=1.95.2
+mod_version=1.95.3
 
 # Minecraft properties (update mods.toml when changing)
-mc_version=1.15.2
-forge_version=31.1.41
+mc_version=1.16.4
+forge_version=35.1.16

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.9-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -1,5 +1,21 @@
 #!/usr/bin/env sh
 
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 ##############################################################################
 ##
 ##  Gradle start up script for UN*X
@@ -28,7 +44,7 @@ APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
@@ -66,6 +82,7 @@ esac
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
+
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
@@ -109,10 +126,11 @@ if $darwin; then
     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
 fi
 
-# For Cygwin, switch paths to Windows format before running java
-if $cygwin ; then
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
     JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
@@ -138,19 +156,19 @@ if $cygwin ; then
         else
             eval `echo args$i`="\"$arg\""
         fi
-        i=$((i+1))
+        i=`expr $i + 1`
     done
     case $i in
-        (0) set -- ;;
-        (1) set -- "$args0" ;;
-        (2) set -- "$args0" "$args1" ;;
-        (3) set -- "$args0" "$args1" "$args2" ;;
-        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
     esac
 fi
 
@@ -159,14 +177,9 @@ save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }
-APP_ARGS=$(save "$@")
+APP_ARGS=`save "$@"`
 
 # Collect all arguments for the java command, following the shell quoting and substitution rules
 eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
 
-# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
-if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
-  cd "$(dirname "$0")"
-fi
-
 exec "$JAVACMD" "$@"

gradlew.bat

@@ -1,3 +1,19 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
 @if "%DEBUG%" == "" @echo off
 @rem ##########################################################################
 @rem
@@ -13,15 +29,18 @@ if "%DIRNAME%" == "" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
 
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto init
+if "%ERRORLEVEL%" == "0" goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -35,7 +54,7 @@ goto fail
 set JAVA_HOME=%JAVA_HOME:"=%
 set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
-if exist "%JAVA_EXE%" goto init
+if exist "%JAVA_EXE%" goto execute
 
 echo.
 echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
@@ -45,28 +64,14 @@ echo location of your Java installation.
 
 goto fail
 
-:init
-@rem Get command-line arguments, handling Windows variants
-
-if not "%OS%" == "Windows_NT" goto win9xME_args
-
-:win9xME_args
-@rem Slurp the command line arguments.
-set CMD_LINE_ARGS=
-set _SKIP=2
-
-:win9xME_args_slurp
-if "x%~1" == "x" goto execute
-
-set CMD_LINE_ARGS=%*
-
 :execute
 @rem Setup the command line
 
 set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
+
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
 
 :end
 @rem End local scope for the variables with windows NT shell

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().getResources();
+        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().getResources();
+        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

@@ -12,14 +12,12 @@ 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
 {
@@ -57,7 +55,7 @@ public class ClientTableFormatter implements TableFormatter
     @Override
     public int getWidth( ITextComponent component )
     {
-        return renderer().width( component.getColoredString() );
+        return renderer().width( component );
     }
 
     @Override
@@ -66,10 +64,11 @@ public class ClientTableFormatter implements TableFormatter
         Minecraft mc = Minecraft.getInstance();
         NewChatGui chat = mc.gui.getChat();
 
-        // Trim the text if it goes over the allowed length
-        int maxWidth = MathHelper.floor( chat.getWidth() / chat.getScale() );
-        List<ITextComponent> list = RenderComponentsUtil.wrapComponents( component, maxWidth, mc.font, false, false );
-        if( !list.isEmpty() ) chat.addMessage( 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.wrapComponents( component, maxWidth, mc.fontRenderer );
+        // if( !list.isEmpty() ) chat.printChatMessageWithOptionalDeletion( list.get( 0 ), id );
+        chat.addMessage( 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;
 
@@ -120,7 +123,7 @@ public final class GuiComputer<T extends ContainerComputerBase> extends Containe
     }
 
     @Override
-    public void renderBg( float partialTicks, int mouseX, int mouseY )
+    public void renderBg( @Nonnull MatrixStack stack, float partialTicks, int mouseX, int mouseY )
     {
         // Draw terminal
         terminal.draw( terminalWrapper.getX(), terminalWrapper.getY() );
@@ -135,11 +138,10 @@ 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 );
-        renderTooltip( mouseX, mouseY );
+        super.render( stack, mouseX, mouseY, partialTicks );
+        renderTooltip( stack, mouseX, mouseY );
     }
 
     @Override
@@ -148,4 +150,10 @@ public final class GuiComputer<T extends ContainerComputerBase> extends Containe
         return (getFocused() != null && getFocused().mouseDragged( x, y, button, deltaX, deltaY ))
             || super.mouseDragged( x, y, button, deltaX, deltaY );
     }
+
+    @Override
+    protected void renderLabels( @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 renderLabels( int mouseX, int mouseY )
-    {
-        String title = this.title.getColoredString();
-        font.draw( title, (imageWidth - font.width( title )) / 2.0f, 6, 0x404040 );
-        font.draw( title, 8, imageHeight - 96 + 2, 0x404040 );
-    }
-
-    @Override
-    protected void renderBg( float partialTicks, int mouseX, int mouseY )
+    protected void renderBg( @Nonnull MatrixStack transform, float partialTicks, int mouseX, int mouseY )
     {
         RenderSystem.color4f( 1.0F, 1.0F, 1.0F, 1.0F );
         minecraft.getTextureManager().bind( BACKGROUND );
-        blit( leftPos, topPos, 0, 0, imageWidth, imageHeight );
+        blit( transform, leftPos, topPos, 0, 0, imageWidth, imageHeight );
     }
 
     @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 );
-        renderTooltip( mouseX, mouseY );
+        renderBackground( transform );
+        super.render( transform, mouseX, mouseY, partialTicks );
+        renderTooltip( 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
-    protected void renderLabels( int mouseX, int mouseY )
+    /*@Override
+    protected void drawGuiContainerForegroundLayer( int mouseX, int mouseY )
     {
-        String title = getTitle().getColoredString();
-        font.draw( title, (imageWidth - font.width( title )) / 2.0f, 6, 0x404040 );
-        font.draw( I18n.get( "container.inventory" ), 8, imageHeight - 96 + 2, 0x404040 );
-    }
+        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 renderBg( float partialTicks, int mouseX, int mouseY )
+    protected void renderBg( @Nonnull MatrixStack transform, float partialTicks, int mouseX, int mouseY )
     {
         RenderSystem.color4f( 1.0F, 1.0F, 1.0F, 1.0F );
         minecraft.getTextureManager().bind( BACKGROUND );
-        blit( leftPos, topPos, 0, 0, imageWidth, imageHeight );
+        blit( transform, leftPos, topPos, 0, 0, imageWidth, imageHeight );
 
-        if( getMenu().isPrinting() ) blit( leftPos + 34, topPos + 21, 176, 0, 25, 45 );
+        if( getMenu().isPrinting() ) blit( transform, leftPos + 34, topPos + 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 );
-        renderTooltip( mouseX, mouseY );
+        renderBackground( stack );
+        super.render( stack, mouseX, mouseY, partialTicks );
+        renderTooltip( 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 book;
     private final int pages;
     private final TextBuffer[] text;
@@ -91,27 +91,33 @@ public class GuiPrintout extends ContainerScreen<ContainerHeldItem>
     }
 
     @Override
-    public void renderBg( float partialTicks, int mouseX, int mouseY )
+    protected void renderBg( @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().renderBuffers().bufferSource();
-        drawBorder( IDENTITY, renderer, leftPos, topPos, getBlitOffset(), page, pages, book );
-        drawText( IDENTITY, renderer, leftPos + X_TEXT_MARGIN, topPos + Y_TEXT_MARGIN, ItemPrintout.LINES_PER_PAGE * page, text, colours );
+        Matrix4f matrix = transform.last().pose();
+        drawBorder( matrix, renderer, leftPos, topPos, getBlitOffset(), page, pages, book );
+        drawText( matrix, renderer, leftPos + X_TEXT_MARGIN, topPos + Y_TEXT_MARGIN, ItemPrintout.LINES_PER_PAGE * page, text, colours );
         renderer.endBatch();
     }
 
     @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 );
-        renderTooltip( mouseX, mouseY );
+        super.render( stack, mouseX, mouseY, partialTicks );
+    }
+
+    @Override
+    protected void renderLabels( @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.MOD_ID, "textures/gui/turtle_normal.png" );
@@ -92,41 +95,38 @@ public class GuiTurtle extends ContainerScreen<ContainerTurtle>
         return super.keyPressed( key, scancode, modifiers );
     }
 
-    private void drawSelectionSlot( boolean advanced )
-    {
-        // Draw selection slot
-        int slot = 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().bind( advanced ? BACKGROUND_ADVANCED : BACKGROUND_NORMAL );
-            blit( leftPos + ContainerTurtle.TURTLE_START_X - 2 + slotX * 18, topPos + ContainerTurtle.PLAYER_START_Y - 2 + slotY * 18, 0, 217, 24, 24 );
-        }
-    }
-
     @Override
-    protected void renderBg( float partialTicks, int mouseX, int mouseY )
+    protected void renderBg( @Nonnull MatrixStack transform, float partialTicks, int mouseX, int mouseY )
     {
         // Draw term
-        boolean advanced = family == ComputerFamily.ADVANCED;
+        ResourceLocation texture = 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().bind( advanced ? BACKGROUND_ADVANCED : BACKGROUND_NORMAL );
-        blit( leftPos, topPos, 0, 0, imageWidth, imageHeight );
+        minecraft.getTextureManager().bind( texture );
+        blit( transform, leftPos, topPos, 0, 0, imageWidth, imageHeight );
 
-        drawSelectionSlot( advanced );
+        // Draw selection slot
+        int slot = container.getSelectedSlot();
+        if( slot >= 0 )
+        {
+            int slotX = slot % 4;
+            int slotY = slot / 4;
+            blit( transform,
+                leftPos + ContainerTurtle.TURTLE_START_X - 2 + slotX * 18,
+                topPos + 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 );
-        renderTooltip( mouseX, mouseY );
+        renderBackground( stack );
+        super.render( stack, mouseX, mouseY, partialTicks );
+        renderTooltip( stack, mouseX, mouseY );
     }
 
     @Override
@@ -135,4 +135,10 @@ public class GuiTurtle extends ContainerScreen<ContainerTurtle>
         return (getFocused() != null && getFocused().mouseDragged( x, y, button, deltaX, deltaY ))
             || super.mouseDragged( x, y, button, deltaX, deltaY );
     }
+
+    @Override
+    protected void renderLabels( @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.register( 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.getPosition();
+        Vector3d cameraPos = info.getPosition();
         double xOffset = pos.getX() - cameraPos.x();
         double yOffset = pos.getY() - cameraPos.y();
         double zOffset = pos.getZ() - cameraPos.z();

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().getPosition();
+        Vector3d cameraPos = event.getInfo().getPosition();
         transformStack.pushPose();
         transformStack.translate( pos.getX() - cameraPos.x(), pos.getY() - cameraPos.y(), pos.getZ() - cameraPos.z() );
 

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.solid() );
+
         transform.popPose();
     }
 

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.pushPose();
 
         // 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 ).getMaterials( modelGetter, missingTextureErrors ) );
             materials.addAll( modelGetter.apply( COLOUR_TURTLE_MODEL ).getMaterials( 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;

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 resolve( @Nonnull IBakedModel originalModel, @Nonnull ItemStack stack, @Nullable World world, @Nullable LivingEntity entity )
+            public IBakedModel resolve( @Nonnull IBakedModel originalModel, @Nonnull ItemStack stack, @Nullable ClientWorld world, @Nullable LivingEntity entity )
             {
                 ItemTurtle turtle = (ItemTurtle) stack.getItem();
                 int colour = turtle.getColour( stack );

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

@@ -14,6 +14,7 @@ import dan200.computercraft.core.apis.http.*;
 import dan200.computercraft.core.apis.http.request.HttpRequest;
 import dan200.computercraft.core.apis.http.websocket.Websocket;
 import io.netty.handler.codec.http.DefaultHttpHeaders;
+import io.netty.handler.codec.http.HttpHeaderNames;
 import io.netty.handler.codec.http.HttpHeaders;
 import io.netty.handler.codec.http.HttpMethod;
 
@@ -179,7 +180,7 @@ public class HTTPAPI implements ILuaAPI
     }
 
     @Nonnull
-    private static HttpHeaders getHeaders( @Nonnull Map<?, ?> headerTable ) throws LuaException
+    private HttpHeaders getHeaders( @Nonnull Map<?, ?> headerTable ) throws LuaException
     {
         HttpHeaders headers = new DefaultHttpHeaders();
         for( Map.Entry<?, ?> entry : headerTable.entrySet() )
@@ -197,6 +198,11 @@ public class HTTPAPI implements ILuaAPI
                 }
             }
         }
+
+        if( !headers.contains( HttpHeaderNames.USER_AGENT ) )
+        {
+            headers.set( HttpHeaderNames.USER_AGENT, apiEnvironment.getComputerEnvironment().getUserAgent() );
+        }
         return headers;
     }
 }

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

@@ -191,7 +191,7 @@ public class RedstoneAPI implements ILuaAPI
     @LuaFunction
     public final int getBundledInput( ComputerSide side )
     {
-        return environment.getBundledOutput( side );
+        return environment.getBundledInput( side );
     }
 
     /**

src/main/java/dan200/computercraft/core/apis/http/request/HttpRequestHandler.java

@@ -80,10 +80,6 @@ public final class HttpRequestHandler extends SimpleChannelInboundHandler<HttpOb
         {
             request.headers().set( HttpHeaderNames.ACCEPT_CHARSET, "UTF-8" );
         }
-        if( !request.headers().contains( HttpHeaderNames.USER_AGENT ) )
-        {
-            request.headers().set( HttpHeaderNames.USER_AGENT, this.request.environment().getComputerEnvironment().getUserAgent() );
-        }
         request.headers().set( HttpHeaderNames.HOST, uri.getPort() < 0 ? uri.getHost() : uri.getHost() + ":" + uri.getPort() );
         request.headers().set( HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE );
 

src/main/java/dan200/computercraft/core/apis/http/request/HttpResponseHandle.java

@@ -58,10 +58,10 @@ public class HttpResponseHandle implements ObjectSource
      * If multiple headers are sent with the same name, they will be combined with a comma.
      *
      * @return The response's headers.
-     * @cc.usage Make a request to [example.computercraft.cc](https://example.computercraft.cc), and print the
+     * @cc.usage Make a request to [example.tweaked.cc](https://example.tweaked.cc), and print the
      * returned headers.
      * <pre>{@code
-     * local request = http.get("https://example.computercraft.cc")
+     * local request = http.get("https://example.tweaked.cc")
      * print(textutils.serialize(request.getResponseHeaders()))
      * -- => {
      * --  [ "Content-Type" ] = "text/plain; charset=utf8",

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

@@ -16,19 +16,18 @@ 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;
 
 public class BlockModelProvider extends BlockStateProvider
 {
-    private final ModelFile monitorBase;
-    private final ModelFile orientable;
+    private ModelFile monitorBase;
+    private ModelFile orientable;
 
     public BlockModelProvider( DataGenerator generator, ExistingFileHelper existingFileHelper )
     {
         super( generator, ComputerCraft.MOD_ID, existingFileHelper );
-        monitorBase = models().getExistingFile( new ResourceLocation( ComputerCraft.MOD_ID, "block/monitor_base" ) );
-        orientable = models().getExistingFile( new ResourceLocation( "block/orientable" ) );
     }
 
     @Nonnull
@@ -41,6 +40,9 @@ public class BlockModelProvider extends BlockStateProvider
     @Override
     protected void registerStatesAndModels()
     {
+        monitorBase = models().getExistingFile( new ResourceLocation( ComputerCraft.MOD_ID, "block/monitor_base" ) );
+        orientable = models().getExistingFile( new ResourceLocation( "block/orientable" ) );
+
         registerMonitors( Registry.ModBlocks.MONITOR_NORMAL.get() );
         registerMonitors( Registry.ModBlocks.MONITOR_ADVANCED.get() );
 

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;

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
                 .setRolls( ConstantRange.exactly( 1 ) )
                 .add( DynamicLootEntry.dynamicEntry( new ResourceLocation( ComputerCraft.MOD_ID, "computer" ) ) )
                 .when( Alternative.alternative(
-                    BlockNamedEntityLootCondition.builder(),
-                    HasComputerIdLootCondition.builder(),
-                    PlayerCreativeLootCondition.builder().invert()
+                    BlockNamedEntityLootCondition.BUILDER,
+                    HasComputerIdLootCondition.BUILDER,
+                    PlayerCreativeLootCondition.BUILDER.invert()
                 ) )
             ).build() );
     }

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

@@ -22,7 +22,7 @@ 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;
@@ -62,7 +62,7 @@ public class Recipes extends RecipeProvider
                 .requires( Items.PAPER )
                 .requires( DyeItem.byColor( ofColour( colour ) ) )
                 .group( "computercraft:disk" )
-                .unlocks( "has_drive", inventoryChange( Registry.ModBlocks.DISK_DRIVE.get() ) )
+                .unlockedBy( "has_drive", inventoryChange( Registry.ModBlocks.DISK_DRIVE.get() ) )
                 .save( RecipeWrapper.wrap(
                     ImpostorShapelessRecipe.SERIALIZER, add,
                     x -> x.putInt( IColouredItem.NBT_COLOUR, colour.getHex() )
@@ -92,7 +92,7 @@ public class Recipes extends RecipeProvider
                     .pattern( "#T" )
                     .define( '#', base.getItem() )
                     .define( 'T', upgrade.getCraftingItem().getItem() )
-                    .unlocks( "has_items",
+                    .unlockedBy( "has_items",
                         inventoryChange( base.getItem(), upgrade.getCraftingItem().getItem() ) )
                     .save(
                         RecipeWrapper.wrap( ImpostorRecipe.SERIALIZER, add, result.getTag() ),
@@ -127,7 +127,7 @@ public class Recipes extends RecipeProvider
                     .pattern( "P" )
                     .define( '#', base.getItem() )
                     .define( 'P', upgrade.getCraftingItem().getItem() )
-                    .unlocks( "has_items",
+                    .unlockedBy( "has_items",
                         inventoryChange( base.getItem(), upgrade.getCraftingItem().getItem() ) )
                     .save(
                         RecipeWrapper.wrap( ImpostorRecipe.SERIALIZER, add, result.getTag() ),
@@ -148,8 +148,8 @@ public class Recipes extends RecipeProvider
             .pattern( " # " )
             .define( '#', Tags.Items.STONE )
             .define( 'R', Tags.Items.DUSTS_REDSTONE )
-            .unlocks( "has_computer", inventoryChange( CCTags.COMPUTER ) )
-            .unlocks( "has_modem", inventoryChange( CCTags.COMPUTER ) )
+            .unlockedBy( "has_computer", inventoryChange( CCTags.COMPUTER ) )
+            .unlockedBy( "has_modem", inventoryChange( CCTags.COMPUTER ) )
             .save( add );
 
         ShapedRecipeBuilder
@@ -160,7 +160,7 @@ public class Recipes extends RecipeProvider
             .define( '#', Tags.Items.STONE )
             .define( 'R', Tags.Items.DUSTS_REDSTONE )
             .define( 'G', Tags.Items.GLASS_PANES )
-            .unlocks( "has_redstone", inventoryChange( Tags.Items.DUSTS_REDSTONE ) )
+            .unlockedBy( "has_redstone", inventoryChange( Tags.Items.DUSTS_REDSTONE ) )
             .save( add );
 
         ShapedRecipeBuilder
@@ -171,7 +171,7 @@ public class Recipes extends RecipeProvider
             .define( '#', Tags.Items.INGOTS_GOLD )
             .define( 'R', Tags.Items.DUSTS_REDSTONE )
             .define( 'G', Tags.Items.GLASS_PANES )
-            .unlocks( "has_components", inventoryChange( Items.REDSTONE, Items.GOLD_INGOT ) )
+            .unlockedBy( "has_components", inventoryChange( Items.REDSTONE, Items.GOLD_INGOT ) )
             .save( add );
 
         ShapedRecipeBuilder
@@ -182,7 +182,7 @@ public class Recipes extends RecipeProvider
             .define( '#', Tags.Items.INGOTS_GOLD )
             .define( 'R', Blocks.COMMAND_BLOCK )
             .define( 'G', Tags.Items.GLASS_PANES )
-            .unlocks( "has_components", inventoryChange( Blocks.COMMAND_BLOCK ) )
+            .unlockedBy( "has_components", inventoryChange( Blocks.COMMAND_BLOCK ) )
             .save( add );
 
         ShapedRecipeBuilder
@@ -192,7 +192,7 @@ public class Recipes extends RecipeProvider
             .pattern( "#R#" )
             .define( '#', Tags.Items.STONE )
             .define( 'R', Tags.Items.DUSTS_REDSTONE )
-            .unlocks( "has_computer", inventoryChange( CCTags.COMPUTER ) )
+            .unlockedBy( "has_computer", inventoryChange( CCTags.COMPUTER ) )
             .save( add );
 
         ShapedRecipeBuilder
@@ -202,7 +202,7 @@ public class Recipes extends RecipeProvider
             .pattern( "###" )
             .define( '#', Tags.Items.STONE )
             .define( 'G', Tags.Items.GLASS_PANES )
-            .unlocks( "has_computer", inventoryChange( CCTags.COMPUTER ) )
+            .unlockedBy( "has_computer", inventoryChange( CCTags.COMPUTER ) )
             .save( add );
 
         ShapedRecipeBuilder
@@ -212,7 +212,7 @@ public class Recipes extends RecipeProvider
             .pattern( "###" )
             .define( '#', Tags.Items.INGOTS_GOLD )
             .define( 'G', Tags.Items.GLASS_PANES )
-            .unlocks( "has_computer", inventoryChange( CCTags.COMPUTER ) )
+            .unlockedBy( "has_computer", inventoryChange( CCTags.COMPUTER ) )
             .save( add );
 
         ShapedRecipeBuilder
@@ -223,8 +223,8 @@ public class Recipes extends RecipeProvider
             .define( '#', Tags.Items.STONE )
             .define( 'A', Items.GOLDEN_APPLE )
             .define( 'G', Tags.Items.GLASS_PANES )
-            .unlocks( "has_computer", inventoryChange( CCTags.COMPUTER ) )
-            .unlocks( "has_apple", inventoryChange( Items.GOLDEN_APPLE ) )
+            .unlockedBy( "has_computer", inventoryChange( CCTags.COMPUTER ) )
+            .unlockedBy( "has_apple", inventoryChange( Items.GOLDEN_APPLE ) )
             .save( add );
 
         ShapedRecipeBuilder
@@ -235,8 +235,8 @@ public class Recipes extends RecipeProvider
             .define( '#', Tags.Items.INGOTS_GOLD )
             .define( 'A', Items.GOLDEN_APPLE )
             .define( 'G', Tags.Items.GLASS_PANES )
-            .unlocks( "has_computer", inventoryChange( CCTags.COMPUTER ) )
-            .unlocks( "has_apple", inventoryChange( Items.GOLDEN_APPLE ) )
+            .unlockedBy( "has_computer", inventoryChange( CCTags.COMPUTER ) )
+            .unlockedBy( "has_apple", inventoryChange( Items.GOLDEN_APPLE ) )
             .save( add );
 
         ShapedRecipeBuilder
@@ -247,7 +247,7 @@ public class Recipes extends RecipeProvider
             .define( '#', Tags.Items.STONE )
             .define( 'R', Tags.Items.DUSTS_REDSTONE )
             .define( 'D', Tags.Items.DYES )
-            .unlocks( "has_computer", inventoryChange( CCTags.COMPUTER ) )
+            .unlockedBy( "has_computer", inventoryChange( CCTags.COMPUTER ) )
             .save( add );
 
         ShapedRecipeBuilder
@@ -258,7 +258,7 @@ public class Recipes extends RecipeProvider
             .define( '#', Tags.Items.STONE )
             .define( 'N', Blocks.NOTE_BLOCK )
             .define( 'R', Tags.Items.DUSTS_REDSTONE )
-            .unlocks( "has_computer", inventoryChange( CCTags.COMPUTER ) )
+            .unlockedBy( "has_computer", inventoryChange( CCTags.COMPUTER ) )
             .save( add );
 
         ShapedRecipeBuilder
@@ -268,19 +268,19 @@ public class Recipes extends RecipeProvider
             .pattern( "###" )
             .define( '#', Tags.Items.STONE )
             .define( 'R', Tags.Items.DUSTS_REDSTONE )
-            .unlocks( "has_computer", inventoryChange( CCTags.COMPUTER ) )
-            .unlocks( "has_cable", inventoryChange( Registry.ModItems.CABLE.get() ) )
+            .unlockedBy( "has_computer", inventoryChange( CCTags.COMPUTER ) )
+            .unlockedBy( "has_cable", inventoryChange( Registry.ModItems.CABLE.get() ) )
             .save( add );
 
         ShapelessRecipeBuilder
             .shapeless( Registry.ModBlocks.WIRED_MODEM_FULL.get() )
             .requires( Registry.ModItems.WIRED_MODEM.get() )
-            .unlocks( "has_modem", inventoryChange( CCTags.WIRED_MODEM ) )
+            .unlockedBy( "has_modem", inventoryChange( CCTags.WIRED_MODEM ) )
             .save( add, new ResourceLocation( ComputerCraft.MOD_ID, "wired_modem_full_from" ) );
         ShapelessRecipeBuilder
             .shapeless( Registry.ModItems.WIRED_MODEM.get() )
             .requires( Registry.ModBlocks.WIRED_MODEM_FULL.get() )
-            .unlocks( "has_modem", inventoryChange( CCTags.WIRED_MODEM ) )
+            .unlockedBy( "has_modem", inventoryChange( CCTags.WIRED_MODEM ) )
             .save( add, new ResourceLocation( ComputerCraft.MOD_ID, "wired_modem_full_to" ) );
 
         ShapedRecipeBuilder
@@ -290,7 +290,7 @@ public class Recipes extends RecipeProvider
             .pattern( "###" )
             .define( '#', Tags.Items.STONE )
             .define( 'E', Tags.Items.ENDER_PEARLS )
-            .unlocks( "has_computer", inventoryChange( CCTags.COMPUTER ) )
+            .unlockedBy( "has_computer", inventoryChange( CCTags.COMPUTER ) )
             .save( add );
 
         ShapedRecipeBuilder
@@ -300,8 +300,8 @@ public class Recipes extends RecipeProvider
             .pattern( "###" )
             .define( '#', Tags.Items.INGOTS_GOLD )
             .define( 'E', Items.ENDER_EYE )
-            .unlocks( "has_computer", inventoryChange( CCTags.COMPUTER ) )
-            .unlocks( "has_wireless", inventoryChange( Registry.ModBlocks.WIRELESS_MODEM_NORMAL.get() ) )
+            .unlockedBy( "has_computer", inventoryChange( CCTags.COMPUTER ) )
+            .unlockedBy( "has_wireless", inventoryChange( Registry.ModBlocks.WIRELESS_MODEM_NORMAL.get() ) )
             .save( add );
     }
 
@@ -310,13 +310,13 @@ 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.hasItem( ItemPredicate.Builder.item().of( stack ).build() );
+        return InventoryChangeTrigger.Instance.hasItems( ItemPredicate.Builder.item().of( stack ).build() );
     }
 
     private static InventoryChangeTrigger.Instance inventoryChange( IItemProvider... stack )
     {
-        return InventoryChangeTrigger.Instance.hasItem( stack );
+        return InventoryChangeTrigger.Instance.hasItems( stack );
     }
 }

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 addTags()
     {
-        tag( COMPUTER )
-            .add( Registry.ModItems.COMPUTER_NORMAL.get() )
-            .add( Registry.ModItems.COMPUTER_ADVANCED.get() )
-            .add( Registry.ModItems.COMPUTER_COMMAND.get() );
+        tag( COMPUTER ).add(
+            Registry.ModItems.COMPUTER_NORMAL.get(),
+            Registry.ModItems.COMPUTER_ADVANCED.get(),
+            Registry.ModItems.COMPUTER_COMMAND.get()
+        );
         tag( TURTLE ).add( Registry.ModItems.TURTLE_NORMAL.get(), Registry.ModItems.TURTLE_ADVANCED.get() );
         tag( WIRED_MODEM ).add( Registry.ModItems.WIRED_MODEM.get(), Registry.ModItems.WIRED_MODEM_FULL.get() );
-        tag( MONITOR )
-            .add( Registry.ModItems.MONITOR_NORMAL.get() )
-            .add( Registry.ModItems.MONITOR_ADVANCED.get() );
+        tag( MONITOR ).add( Registry.ModItems.MONITOR_NORMAL.get(), Registry.ModItems.MONITOR_ADVANCED.get() );
+
+        tag( 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.bind( new ResourceLocation( ComputerCraft.MOD_ID, name ).toString() );
     }
 }

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

@@ -56,6 +56,7 @@ import dan200.computercraft.shared.util.CreativeTabMain;
 import dan200.computercraft.shared.util.FixedPointTileEntityType;
 import dan200.computercraft.shared.util.ImpostorRecipe;
 import dan200.computercraft.shared.util.ImpostorShapelessRecipe;
+import net.minecraft.block.AbstractBlock;
 import net.minecraft.block.Block;
 import net.minecraft.block.material.Material;
 import net.minecraft.entity.EntityClassification;
@@ -92,21 +93,21 @@ 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()
+        private static AbstractBlock.Properties properties()
         {
-            return Block.Properties.of( Material.STONE ).strength( 2 );
+            return AbstractBlock.Properties.of( Material.STONE ).strength( 2 );
         }
 
-        private static Block.Properties turtleProperties()
+        private static AbstractBlock.Properties turtleProperties()
         {
-            return Block.Properties.of( Material.STONE ).strength( 2.5f );
+            return AbstractBlock.Properties.of( Material.STONE ).strength( 2.5f );
         }
 
-        private static Block.Properties modemProperties()
+        private static AbstractBlock.Properties modemProperties()
         {
-            return Block.Properties.of( Material.STONE ).strength( 1.5f );
+            return AbstractBlock.Properties.of( Material.STONE ).strength( 1.5f );
         }
 
         public static final RegistryObject<BlockComputer> COMPUTER_NORMAL = BLOCKS.register( "computer_normal",
@@ -115,7 +116,7 @@ public final class Registry
             () -> new BlockComputer( properties(), ComputerFamily.ADVANCED, ModTiles.COMPUTER_ADVANCED ) );
 
         public static final RegistryObject<BlockComputer> COMPUTER_COMMAND = BLOCKS.register( "computer_command", () -> new BlockComputer(
-            Block.Properties.of( Material.STONE ).strength( -1, 6000000.0F ),
+            AbstractBlock.Properties.of( Material.STONE ).strength( -1, 6000000.0F ),
             ComputerFamily.COMMAND, ModTiles.COMPUTER_COMMAND
         ) );
 
@@ -145,7 +146,7 @@ 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 +184,7 @@ 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 +282,7 @@ 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>createNothing( EntityClassification.MISC )
@@ -293,7 +294,7 @@ 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.isClientSide || !server.isUnderSpawnProtection( world, pos, player );
+        return server == null || world.isClientSide || (world instanceof ServerWorld && !server.isUnderSpawnProtection( (ServerWorld) world, pos, player ));
     }
 
     public static boolean isBlockEditable( World world, BlockPos pos, PlayerEntity player )
     {
-        MinecraftServer server = world.getServer();
-        return server == null || world.isClientSide || !server.isUnderSpawnProtection( 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;
@@ -283,7 +284,7 @@ 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 )

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()
-            .setClickEvent( new ClickEvent( ClickEvent.Action.RUN_COMMAND, PREFIX + text ) )
-            .setHoverEvent( new HoverEvent( HoverEvent.Action.SHOW_TEXT, new TranslationTextComponent( "gui.computercraft.tooltip.copy" ) ) );
-        return name;
+        return new StringTextComponent( text ).withStyle( Style.EMPTY
+            .withClickEvent( new ClickEvent( ClickEvent.Action.RUN_COMMAND, PREFIX + text ) )
+            .withHoverEvent( 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;
@@ -173,7 +174,7 @@ 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( "" )
+        IFormattableTextComponent output = new StringTextComponent( "" )
             .append( coloured( "/" + command + usage, HEADER ) )
             .append( " " )
             .append( coloured( translate( "commands." + id + ".synopsis" ), SYNOPSIS ) )
@@ -189,8 +190,8 @@ public final class HelpingArgumentBuilder extends LiteralArgumentBuilder<Command
 
             output.append( "\n" );
 
-            ITextComponent component = coloured( child.getName(), NAME );
-            component.getStyle().setClickEvent( new ClickEvent(
+            IFormattableTextComponent component = coloured( child.getName(), NAME );
+            component.getStyle().withClickEvent( new ClickEvent(
                 ClickEvent.Action.SUGGEST_COMMAND,
                 "/" + command + " " + child.getName()
             ) );

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

@@ -19,37 +19,35 @@ 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 ).withStyle( colour );
+    }
+
+    public static <T extends IFormattableTextComponent> T coloured( T component, TextFormatting colour )
+    {
+        component.withStyle( 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.append( child );
@@ -57,31 +55,31 @@ public final class ChatHelpers
         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.withColor( TextFormatting.YELLOW );
+        style = style.withClickEvent( new ClickEvent( ClickEvent.Action.RUN_COMMAND, command ) );
+        style = style.withHoverEvent( 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/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 playerWillDestroy( @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.random )
-                .withParameter( LootParameters.BLOCK_POS, pos )
+                .withParameter( LootParameters.ORIGIN, Vector3d.atCenterOf( pos ) )
                 .withParameter( LootParameters.TOOL, player.getMainHandItem() )
                 .withParameter( LootParameters.THIS_ENTITY, player )
-                .withOptionalParameter( LootParameters.BLOCK_ENTITY, tile )
+                .withParameter( LootParameters.BLOCK_ENTITY, tile )
                 .withDynamicDrop( DROP, ( ctx, out ) -> out.accept( getItem( computer ) ) );
             for( ItemStack item : state.getDrops( context ) )
             {
                 popResource( world, pos, item );
             }
 
-            state.spawnAfterBreak( world, pos, player.getMainHandItem() );
+            state.spawnAfterBreak( serverWorld, pos, player.getMainHandItem() );
         }
     }
 

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( worldPosition.getX() + 0.5, worldPosition.getY() + 0.5, worldPosition.getZ() + 0.5 ), Vec2f.ZERO,
+            new Vector3d( worldPosition.getX() + 0.5, worldPosition.getY() + 0.5, worldPosition.getZ() + 0.5 ), Vector2f.ZERO,
             (ServerWorld) getLevel(), 2,
             name, new StringTextComponent( name ),
             getLevel().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 load( @Nonnull CompoundNBT nbt )
+    public void load( @Nonnull BlockState state, @Nonnull CompoundNBT nbt )
     {
-        super.load( nbt );
+        super.load( state, nbt );
 
         // Load ID, label and power state
         computerID = nbt.contains( NBT_ID ) ? nbt.getInt( NBT_ID ) : -1;

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 getType()
     {
-        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 getType()
     {
-        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 getType()
     {
-        return () -> INSTANCE;
+        return TYPE;
     }
 }

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

@@ -52,7 +52,7 @@ public final class RecordMedia implements IMedia
 
         try
         {
-            return ObfuscationReflectionHelper.getPrivateValue( MusicDiscItem.class, (MusicDiscItem) item, "sound" );
+            return ObfuscationReflectionHelper.getPrivateValue( MusicDiscItem.class, (MusicDiscItem) item, "field_185076_b" );
         }
         catch( UnableToAccessFieldException | UnableToFindFieldException e )
         {

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.of( Items.PAPER );
-    private final Ingredient redstone = Ingredient.of( Tags.Items.DUSTS_REDSTONE );
+    private final Ingredient redstone = Ingredient.of( 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.dimension() );
         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.levelRenderer.playStreamingMusic( soundEvent, pos );
-        if( name != null ) mc.gui.setNowPlaying( name );
+        mc.levelRenderer.playRecord( soundEvent, pos, null );
+        if( name != null ) mc.gui.setNowPlaying( new StringTextComponent( name ) );
     }
 }

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

@@ -122,9 +122,9 @@ public final class TileDiskDrive extends TileGeneric implements DefaultInventory
     }
 
     @Override
-    public void load( @Nonnull CompoundNBT nbt )
+    public void load( @Nonnull BlockState state, @Nonnull CompoundNBT nbt )
     {
-        super.load( nbt );
+        super.load( state, nbt );
         customName = nbt.contains( NBT_NAME ) ? ITextComponent.Serializer.fromJson( nbt.getString( NBT_NAME ) ) : null;
         if( nbt.contains( NBT_ITEM ) )
         {

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

@@ -6,7 +6,7 @@
 package dan200.computercraft.shared.peripheral.generic.data;
 
 import net.minecraft.block.BlockState;
-import net.minecraft.state.IProperty;
+import net.minecraft.state.Property;
 
 import javax.annotation.Nonnull;
 import java.util.HashMap;
@@ -20,9 +20,9 @@ public class BlockData
         data.put( "name", DataHelpers.getId( state.getBlock() ) );
 
         Map<Object, Object> stateTable = new HashMap<>();
-        for( Map.Entry<IProperty<?>, ? extends Comparable<?>> entry : state.getValues().entrySet() )
+        for( Map.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 );
@@ -32,7 +32,7 @@ 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/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 = this.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.getValue( CABLE ) && state.getValue( 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.getValue( MODEM ).getFacing();
         if( facing == null ) return true;
 
-        BlockPos offsetPos = pos.relative( facing );
-        BlockState offsetState = world.getBlockState( offsetPos );
-        return isFaceSturdy( offsetState, world, offsetPos, facing.getOpposite() );
+        return canSupportCenter( world, pos.relative( facing ), facing.getOpposite() );
     }
 
     @Nullable

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 = getBlockPos();
-            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 = getBlockPos().relative( 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 load( @Nonnull CompoundNBT nbt )
+    public void load( @Nonnull BlockState state, @Nonnull CompoundNBT nbt )
     {
-        super.load( nbt );
+        super.load( state, nbt );
         peripheralAccessAllowed = nbt.getBoolean( NBT_PERIPHERAL_ENABLED );
         peripheral.read( nbt, "" );
     }
@@ -422,12 +422,6 @@ public class TileCable extends TileGeneric
         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 = entity.getBlockPos();
-            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 );
         }
     }
 
@@ -225,9 +225,9 @@ public class TileWiredModemFull extends TileGeneric
     }
 
     @Override
-    public void load( @Nonnull CompoundNBT nbt )
+    public void load( @Nonnull BlockState state, @Nonnull CompoundNBT nbt )
     {
-        super.load( nbt );
+        super.load( state, nbt );
         peripheralAccessAllowed = nbt.getBoolean( NBT_PERIPHERAL_ENABLED );
         for( int i = 0; i < peripherals.length; i++ ) 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 = getBlockPos().relative( 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 canSurvive( BlockState state, IWorldReader world, BlockPos pos )
+    public boolean canSurvive( BlockState state, @Nonnull IWorldReader world, BlockPos pos )
     {
         Direction facing = state.getValue( FACING );
-        BlockPos offsetPos = pos.relative( facing );
-        BlockState offsetState = world.getBlockState( offsetPos );
-        return isFaceSturdy( offsetState, world, offsetPos, facing.getOpposite() );
+        return canSupportCenter( world, pos.relative( 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.getBlockPos().relative( 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/MonitorWatcher.java

@@ -9,6 +9,7 @@ import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.shared.network.NetworkHandler;
 import dan200.computercraft.shared.network.client.MonitorClientMessage;
 import dan200.computercraft.shared.network.client.TerminalState;
+import net.minecraft.entity.player.ServerPlayerEntity;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.ChunkPos;
@@ -28,6 +29,7 @@ import java.util.Queue;
 public final class MonitorWatcher
 {
     private static final Queue<TileMonitor> watching = new ArrayDeque<>();
+    private static final Queue<PlayerUpdate> playerUpdates = new ArrayDeque<>();
 
     private MonitorWatcher()
     {
@@ -58,10 +60,8 @@ public final class MonitorWatcher
             ServerMonitor serverMonitor = getMonitor( monitor );
             if( serverMonitor == null || monitor.enqueued ) continue;
 
-            // We use the cached terminal state if available - this is guaranteed to
-            TerminalState state = monitor.cached;
-            if( state == null ) state = monitor.cached = serverMonitor.write();
-            NetworkHandler.sendToPlayer( event.getPlayer(), new MonitorClientMessage( monitor.getBlockPos(), state ) );
+            // The chunk hasn't been sent to the client yet, so we can't send an update. Do it on tick end.
+            playerUpdates.add( new PlayerUpdate( event.getPlayer(), monitor ) );
         }
     }
 
@@ -70,6 +70,23 @@ public final class MonitorWatcher
     {
         if( event.phase != TickEvent.Phase.END ) return;
 
+        PlayerUpdate playerUpdate;
+        while( (playerUpdate = playerUpdates.poll()) != null )
+        {
+            TileMonitor tile = playerUpdate.monitor;
+            if( tile.enqueued || tile.isRemoved() ) continue;
+
+            ServerMonitor monitor = getMonitor( tile );
+            if( monitor == null ) continue;
+
+            // Some basic sanity checks to the player. It's possible they're no longer within range, but that's harder
+            // to track efficiently.
+            ServerPlayerEntity player = playerUpdate.player;
+            if( !player.isAlive() || player.getLevel() != tile.getLevel() ) continue;
+
+            NetworkHandler.sendToPlayer( playerUpdate.player, new MonitorClientMessage( tile.getBlockPos(), getState( tile, monitor ) ) );
+        }
+
         long limit = ComputerCraft.monitorBandwidth;
         boolean obeyLimit = limit > 0;
 
@@ -90,7 +107,7 @@ public final class MonitorWatcher
                 continue;
             }
 
-            TerminalState state = tile.cached = monitor.write();
+            TerminalState state = getState( tile, monitor );
             NetworkHandler.sendToAllTracking( new MonitorClientMessage( pos, state ), chunk );
 
             limit -= state.size();
@@ -101,4 +118,23 @@ public final class MonitorWatcher
     {
         return !monitor.isRemoved() && monitor.getXIndex() == 0 && monitor.getYIndex() == 0 ? monitor.getCachedServerMonitor() : null;
     }
+
+    private static TerminalState getState( TileMonitor tile, ServerMonitor monitor )
+    {
+        TerminalState state = tile.cached;
+        if( state == null ) state = tile.cached = monitor.write();
+        return state;
+    }
+
+    private static final class PlayerUpdate
+    {
+        final ServerPlayerEntity player;
+        final TileMonitor monitor;
+
+        private PlayerUpdate( ServerPlayerEntity player, TileMonitor monitor )
+        {
+            this.player = player;
+            this.monitor = monitor;
+        }
+    }
 }