Bump version to 1.98.2

As always, a massive diff which is largely just moving files between
projects. This does fix a couple of issues with advancements, but
otherwise should behave the same.

Speaking of which, should probably go and test some of these recipes...

.gitattributes

@@ -1,6 +1,6 @@
 # Ignore changes in generated files
 src/generated/resources/data/** linguist-generated
-src/test/server-files/structures linguist-generated
+src/testMod/server-files/structures linguist-generated
 
 * text=auto
 

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -10,6 +10,7 @@ body:
     options:
       - 1.15.x
       - 1.16.x
+      - 1.17.x
   validations:
     required: true
 - type: input

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+- name: ComputerCraft Discord
+  url: https://discord.computercraft.cc
+  about: Get help on the ComputerCraft Discord.
+- name: GitHub Discussions
+  url: https://github.com/SquidDev-CC/CC-Tweaked/discussions
+  about: Or ask questions on GitHub Discussions.

.github/ISSUE_TEMPLATE/something_else.md

@@ -0,0 +1,4 @@
+---
+name: Something else
+about: An issue about something else.
+---

.github/workflows/main-ci.yml

@@ -32,7 +32,7 @@ jobs:
       run: |
         ./gradlew assemble || ./gradlew assemble
         ./gradlew downloadAssets || ./gradlew downloadAssets
-        ./gradlew build
+        xvfb-run ./gradlew build
 
     - name: Upload Jar
       uses: actions/upload-artifact@v2
@@ -40,8 +40,17 @@ jobs:
         name: CC-Tweaked
         path: build/libs
 
+    - name: Upload Screnshots
+      uses: actions/upload-artifact@v2
+      with:
+        name: Screenshots
+        path: test-files/client/screenshots
+        if-no-files-found: ignore
+        retention-days: 5
+      if: failure()
+
     - name: Upload Coverage
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v2
 
     - name: Parse test reports
       run: ./tools/parse-reports.py

CONTRIBUTING.md

@@ -90,10 +90,11 @@ Before we get into writing tests, it's worth mentioning the various test suites
 
    These tests are run by the '"Core" Java' test suite, and so are also run with `./gradlew test`.
 
- - In-game (`./src/test/java/dan200/computercraft/ingame/`): These tests are run on an actual Minecraft server, using
-   [the same system Mojang do][mc-test]. The aim of these is to test in-game behaviour of blocks and peripherals.
+ - In-game (`./src/testMod/java/dan200/computercraft/ingame/`): These tests are run on an actual Minecraft server and client,
+   using [the same system Mojang do][mc-test]. The aim of these is to test in-game behaviour of blocks and peripherals.
 
-   These are run by `./gradlew testInGame`.
+   These are run by `./gradlew testClient` and `./gradlew testServer`. You may want to run the client under `xvfb-run`
+   or similar when running in a headless environment.
 
 ## CraftOS tests
 CraftOS's tests are written using a test system called "mcfly", heavily inspired by [busted] (and thus RSpec). Groups of

README.md

@@ -1,40 +1,11 @@
 # ![CC: Tweaked](doc/logo.png)
-[![Current build status](https://github.com/SquidDev-CC/CC-Tweaked/workflows/Build/badge.svg)](https://github.com/SquidDev-CC/CC-Tweaked/actions "Current build status") [![Download CC: Tweaked on CurseForge](http://cf.way2muchnoise.eu/title/cc-tweaked.svg)](https://minecraft.curseforge.com/projects/cc-tweaked "Download CC: Tweaked on CurseForge")
+[![Current build status](https://github.com/SquidDev-CC/CC-Tweaked/workflows/Build/badge.svg)](https://github.com/SquidDev-CC/CC-Tweaked/actions "Current build status") [![Download CC: Tweaked on CurseForge](http://cf.way2muchnoise.eu/title/cc-tweaked.svg)][CurseForge]
 
-CC: Tweaked is a fork of [ComputerCraft](https://github.com/dan200/ComputerCraft), adding programmable computers,
-turtles and more to Minecraft.
+CC: Tweaked is a mod for Minecraft which adds programmable computers, turtles and more to the game. A fork of the
+much-beloved [ComputerCraft], it continues its legacy with better performance, stability, and a wealth of new features.
 
-## What?
-ComputerCraft has always held a fond place in my heart: it's the mod which really got me into Minecraft, and it's the
-mod which has kept me playing it for many years. However, development of the original mod has slowed, as the original
-developers have had less time to work on the mod, and moved onto other projects and commitments.
-
-CC: Tweaked (or CC:T for short) is an attempt to continue ComputerCraft's legacy. It's not intended to be a competitor
-to CC, nor do I want to take it in a vastly different direction to the original mod. Instead, CC:T focuses on making the
-ComputerCraft experience as _solid_ as possible, ironing out any wrinkles that may have developed over time.
-
-## Features
-CC: Tweaked contains all the features of the latest version of ComputerCraft, as well as numerous fixes, performance
-improvements and several nifty additions. I'd recommend checking out [the releases page](https://github.com/SquidDev-CC/CC-Tweaked/releases)
-to see the full set of changes, but here's a couple of the more interesting additions:
-
- - Improvements to the `http` library, including websockets, support for other HTTP methods (`PUT`, `DELETE`, etc...)
-   and configurable limits on HTTP usage.
- - Full-block wired modems, allowing one to wrap non-solid peripherals (such as turtles, or chests if Plethora is
-   installed).
- - Pocket computers can be held like maps, allowing you to view the screen without entering a GUI.
- - Printed pages and books can be placed in item frames and held like maps.
- - Several profiling and administration tools for server owners, via the `/computercraft` command. This allows operators
-   to track which computers are hogging resources, turn on and shutdown multiple computers at once and interact with
-   computers remotely.
- - Closer emulation of standard Lua, adding the `debug` and `io` libraries. This also enables seeking within binary
-   files, meaning you don't need to read large files into memory.
- - Allow running multiple computers on multiple threads, reducing latency on worlds with many computers.
-
-## Relation to CCTweaks?
-This mod has nothing to do with CCTweaks, though there is no denying the name is a throwback to it. That being said,
-several features have been included, such as full block modems, the Cobalt runtime and map-like rendering for pocket
-computers.
+CC: Tweaked can be installed from [CurseForge] or [Modrinth]. It requires the [Minecraft Forge][forge] mod loader, but
+[versions are available for Fabric][ccrestitched].
 
 ## Contributing
 Any contribution is welcome, be that using the mod, reporting bugs or contributing code. If you want to get started
@@ -46,8 +17,7 @@ ComputerCraft we have a [forum](https://forums.computercraft.cc/) and [Discord g
 There's also a fairly populated, albeit quiet [IRC channel](http://webchat.esper.net/?channels=computercraft), if that's
 more your cup of tea.
 
-I'd generally recommend you don't contact me directly (email, DM, etc...) unless absolutely necessary (i.e. in order to
-report exploits). You'll get a far quicker response if you ask the whole community!
+We also host fairly comprehensive documentation at [tweaked.cc](https://tweaked.cc/ "The CC: Tweaked website").
 
 ## Using
 CC: Tweaked is hosted on my maven repo, and so is relatively simple to depend on. You may wish to add a soft (or hard)
@@ -70,3 +40,9 @@ exposing more features.
 
 We bundle the API sources with the jar, so documentation should be easily viewable within your editor. Alternatively,
 the generated documentation [can be browsed online](https://tweaked.cc/javadoc/).
+
+[computercraft]: https://github.com/dan200/ComputerCraft "ComputerCraft on GitHub"
+[curseforge]: https://minecraft.curseforge.com/projects/cc-tweaked "Download CC: Tweaked from CurseForge"
+[modrinth]: https://modrinth.com/mod/gu7yAYhd "Download CC: Tweaked from Modrinth"
+[forge]: https://files.minecraftforge.net/ "Download Minecraft Forge."
+[ccrestitched]: https://www.curseforge.com/minecraft/mc-mods/cc-restitched "Download CC: Restitched from CurseForge"

build.gradle

@@ -1,14 +1,12 @@
 buildscript {
     repositories {
         mavenCentral()
-        maven {
-            name = "forge"
-            url = "https://maven.minecraftforge.net"
-        }
+        maven { url = "https://maven.minecraftforge.net" }
+        maven { url = 'https://maven.parchmentmc.org' }
     }
     dependencies {
-        classpath 'com.google.code.gson:gson:2.8.1'
-        classpath 'net.minecraftforge.gradle:ForgeGradle:5.0.6'
+        classpath 'net.minecraftforge.gradle:ForgeGradle:5.1.+'
+        classpath 'org.parchmentmc:librarian:1.+'
     }
 }
 
@@ -24,6 +22,7 @@ plugins {
 }
 
 apply plugin: 'net.minecraftforge.gradle'
+apply plugin: 'org.parchmentmc.librarian.forgegradle'
 
 version = mod_version
 
@@ -40,24 +39,23 @@ java {
     withJavadocJar()
 }
 
-// Tragically java.toolchain.languageVersion doesn't apply to ForgeGradle's
-// tasks, so we force all launchers to use the right Java version.
-tasks.withType(JavaCompile).configureEach {
-    javaCompiler = javaToolchains.compilerFor {
-        languageVersion = javaVersion
-    }
-}
-
 tasks.withType(JavaExec).configureEach {
     javaLauncher = javaToolchains.launcherFor {
         languageVersion = javaVersion
     }
 }
 
+sourceSets {
+    main.resources {
+        srcDir 'src/generated/resources'
+    }
+
+    testMod {}
+}
+
 minecraft {
     runs {
-        client {
-            workingDirectory project.file('run')
+        all {
             property 'forge.logging.markers', 'REGISTRIES'
             property 'forge.logging.console.level', 'debug'
 
@@ -68,28 +66,27 @@ minecraft {
             }
         }
 
+        client {
+            workingDirectory project.file('run')
+        }
+
         server {
             workingDirectory project.file("run/server")
-            property 'forge.logging.markers', 'REGISTRIES'
-            property 'forge.logging.console.level', 'debug'
             arg "--nogui"
-
-            mods {
-                computercraft {
-                    source sourceSets.main
-                }
-            }
         }
 
         data {
             workingDirectory project.file('run')
-            property 'forge.logging.markers', 'REGISTRIES'
-            property 'forge.logging.console.level', 'debug'
-
             args '--mod', 'computercraft', '--all', '--output', file('src/generated/resources/'), '--existing', file('src/main/resources/')
+        }
+
+        testClient {
+            workingDirectory project.file('test-files/client')
+            parent runs.client
+
             mods {
-                computercraft {
-                    source sourceSets.main
+                cctest {
+                    source sourceSets.testMod
                 }
             }
         }
@@ -100,21 +97,16 @@ minecraft {
 
             mods {
                 cctest {
-                    source sourceSets.test
+                    source sourceSets.testMod
                 }
             }
         }
     }
 
-    mappings channel: 'official', version: project.mc_version
+    mappings channel: 'parchment', version: "${mapping_version}-${mc_version}"
 
     accessTransformer file('src/main/resources/META-INF/accesstransformer.cfg')
-}
-
-sourceSets {
-    main.resources {
-        srcDir 'src/generated/resources'
-    }
+    accessTransformer file('src/testMod/resources/META-INF/accesstransformer.cfg')
 }
 
 repositories {
@@ -127,8 +119,11 @@ repositories {
 
 configurations {
     shade
-    compile.extendsFrom shade
+    implementation.extendsFrom shade
     cctJavadoc
+
+    testModImplementation.extendsFrom(implementation)
+    testModImplementation.extendsFrom(testImplementation)
 }
 
 dependencies {
@@ -136,10 +131,11 @@ 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-1.16.5:7.7.0.104:api")
+    compileOnly fg.deobf("com.blamejared.crafttweaker:CraftTweaker-1.16.5:7.1.0.313")
+    compileOnly fg.deobf("commoble.morered:morered-1.16.5:2.1.1.0")
 
-    runtimeOnly fg.deobf("mezz.jei:jei-1.15.2:6.0.0.3")
+    runtimeOnly fg.deobf("mezz.jei:jei-1.16.5:7.7.0.104")
 
     shade 'org.squiddev:Cobalt:0.5.2-SNAPSHOT'
 
@@ -151,11 +147,17 @@ dependencies {
     testImplementation 'org.jetbrains.kotlin:kotlin-reflect:1.3.72'
     testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.8'
 
-    cctJavadoc 'cc.tweaked:cct-javadoc:1.4.0'
+    testModImplementation sourceSets.main.output
+
+    cctJavadoc 'cc.tweaked:cct-javadoc:1.4.1'
 }
 
 // Compile tasks
 
+compileTestModJava {
+    dependsOn(compileJava)
+}
+
 javadoc {
     include "dan200/computercraft/api/**/*.java"
 }
@@ -179,19 +181,19 @@ task luaJavadoc(type: Javadoc) {
 
 jar {
     manifest {
-        attributes(["Specification-Title": "computercraft",
-                    "Specification-Vendor": "SquidDev",
-                    "Specification-Version": "1",
-                    "Implementation-Title": "CC: Tweaked",
-                    "Implementation-Version": "${mod_version}",
-                    "Implementation-Vendor" :"SquidDev",
+        attributes(["Specification-Title"     : "computercraft",
+                    "Specification-Vendor"    : "SquidDev",
+                    "Specification-Version"   : "1",
+                    "Implementation-Title"    : "CC: Tweaked",
+                    "Implementation-Version"  : "${mod_version}",
+                    "Implementation-Vendor"   : "SquidDev",
                     "Implementation-Timestamp": new Date().format("yyyy-MM-dd'T'HH:mm:ssZ")])
     }
 
     from configurations.shade.collect { it.isDirectory() ? it : zipTree(it) }
 }
 
-[compileJava, compileTestJava].forEach {
+[compileJava, compileTestJava, compileTestModJava].forEach {
     it.configure {
         options.compilerArgs << "-Xlint" << "-Xlint:-processing"
     }
@@ -210,7 +212,7 @@ processResources {
         ["git", "-C", projectDir, "log", "--format=tformat:%an%n%cn"].execute().text.split('\n').each {
             if (!blacklist.contains(it)) contributors.add(it)
         }
-    } catch(Exception e) {
+    } catch (Exception e) {
         e.printStackTrace()
     }
     inputs.property "commithash", hash
@@ -221,8 +223,8 @@ processResources {
         include 'data/computercraft/lua/rom/help/credits.txt'
 
         expand 'version': mod_version,
-               'mcversion': mc_version,
-               'gitcontributors': contributors.sort(false, String.CASE_INSENSITIVE_ORDER).join('\n')
+                'mcversion': mc_version,
+                'gitcontributors': contributors.sort(false, String.CASE_INSENSITIVE_ORDER).join('\n')
     }
 
     from(sourceSets.main.resources.srcDirs) {
@@ -237,6 +239,9 @@ sourcesJar {
 
 // Web tasks
 
+
+import com.hierynomus.gradle.license.tasks.LicenseCheck
+import com.hierynomus.gradle.license.tasks.LicenseFormat
 import org.apache.tools.ant.taskdefs.condition.Os
 
 List<String> mkCommand(String command) {
@@ -283,7 +288,9 @@ task illuaminateDocs(type: Exec, dependsOn: [minifyWeb, luaJavadoc]) {
 }
 
 task docWebsite(type: Copy, dependsOn: [illuaminateDocs]) {
-    from 'doc/logo.png'
+    from 'doc'
+    include 'logo.png'
+    include 'images/**'
     into "${project.docsDir}/lua"
 }
 
@@ -299,17 +306,13 @@ test {
 jacocoTestReport {
     dependsOn('test')
     reports {
-        xml.enabled true
-        html.enabled true
+        xml.required = true
+        html.required = true
     }
 }
 
 check.dependsOn jacocoTestReport
 
-
-import com.hierynomus.gradle.license.tasks.LicenseCheck
-import com.hierynomus.gradle.license.tasks.LicenseFormat
-
 license {
     mapping("java", "SLASHSTAR_STYLE")
     strictCheck true
@@ -325,7 +328,7 @@ license {
     }
 }
 
-[licenseTest, licenseFormatTest].forEach {
+[licenseTest, licenseFormatTest, licenseTestMod, licenseFormatTestMod].forEach {
     it.configure {
         include("**/*.java")
         header file('config/license/main.txt')
@@ -339,8 +342,8 @@ gradle.projectsEvaluated {
 }
 
 
-task licenseAPI(type: LicenseCheck);
-task licenseFormatAPI(type: LicenseFormat);
+task licenseAPI(type: LicenseCheck)
+task licenseFormatAPI(type: LicenseFormat)
 [licenseAPI, licenseFormatAPI].forEach {
     it.configure {
         source = sourceSets.main.java
@@ -353,61 +356,60 @@ task setupServer(type: Copy) {
     group "test server"
     description "Sets up the environment for the test server."
 
-    from("src/test/server-files") {
+    from("src/testMod/server-files") {
         include "eula.txt"
         include "server.properties"
     }
     into "test-files/server"
 }
 
-tasks.register('testInGame', JavaExec.class).configure {
-    it.group('test server')
-    it.description("Runs tests on a temporary Minecraft server.")
-    it.dependsOn(setupServer, 'prepareRunTestServer', 'cleanTestInGame')
+["Client", "Server"].forEach { name ->
+    tasks.register("test$name", JavaExec.class).configure {
+        it.group('In-game tests')
+        it.description("Runs tests on a temporary Minecraft instance.")
+        it.dependsOn(setupServer, "prepareRunTest$name", "cleanTest$name", 'compileTestModJava')
 
-    // Copy from runTestServer. We do it in this slightly odd way as runTestServer
-    // isn't created until the task is configured (which is no good for us).
-    JavaExec exec = tasks.getByName('runTestServer')
-    it.setWorkingDir(exec.getWorkingDir())
-    it.setSystemProperties(exec.getSystemProperties())
-    it.setBootstrapClasspath(exec.getBootstrapClasspath())
-    it.setClasspath(exec.getClasspath())
-    it.setMain(exec.getMain())
-    it.setEnvironment(exec.getEnvironment())
-    it.setArgs(exec.getArgs())
-    it.setJvmArgs(exec.getJvmArgs())
+        // Copy from runTestServer. We do it in this slightly odd way as runTestServer
+        // isn't created until the task is configured (which is no good for us).
+        JavaExec exec = tasks.getByName("runTest$name")
+        exec.copyTo(it)
+        it.setClasspath(exec.getClasspath())
+        it.mainClass = exec.mainClass
+        it.setArgs(exec.getArgs())
 
-    it.systemProperty('forge.logging.console.level', 'info')
-    it.systemProperty('cctest.run', 'true')
+        it.systemProperty('forge.logging.console.level', 'info')
+        it.systemProperty('cctest.run', 'true')
 
-    // Jacoco and modlauncher don't play well together as the classes loaded in-game don't
-    // match up with those written to disk. We get Jacoco to dump all classes to disk, and
-    // use that when generating the report.
-    def coverageOut = new File(buildDir, 'jacocoClassDump/testInGame')
-    jacoco.applyTo(it)
-    it.jacoco.setIncludes(["dan200.computercraft.*"])
-    it.jacoco.setClassDumpDir(coverageOut)
-    it.outputs.dir(coverageOut)
-    // Older versions of modlauncher don't include a protection domain (and thus no code
-    // source). Jacoco skips such classes by default, so we need to explicitly include them.
-    it.jacoco.setIncludeNoLocationClasses(true)
-}
-
-tasks.register('jacocoTestInGameReport', JacocoReport.class).configure {
-    it.group('test server')
-    it.description('Generate coverage reports for in-game tests (testInGame)')
-    it.dependsOn('testInGame')
-
-    it.executionData(new File(buildDir, 'jacoco/testInGame.exec'))
-    it.sourceDirectories.from(sourceSets.main.allJava.srcDirs)
-    it.classDirectories.from(new File(buildDir, 'jacocoClassDump/testInGame'))
-
-    it.reports {
-        xml.enabled true
-        html.enabled true
+        // Jacoco and modlauncher don't play well together as the classes loaded in-game don't
+        // match up with those written to disk. We get Jacoco to dump all classes to disk, and
+        // use that when generating the report.
+        def coverageOut = new File(buildDir, "jacocoClassDump/test$name")
+        jacoco.applyTo(it)
+        it.jacoco.setIncludes(["dan200.computercraft.*"])
+        it.jacoco.setClassDumpDir(coverageOut)
+        it.outputs.dir(coverageOut)
+        // Older versions of modlauncher don't include a protection domain (and thus no code
+        // source). Jacoco skips such classes by default, so we need to explicitly include them.
+        it.jacoco.setIncludeNoLocationClasses(true)
     }
+
+    tasks.register("jacocoTest${name}Report", JacocoReport.class).configure {
+        it.group('In-game')
+        it.description("Generate coverage reports for test$name")
+        it.dependsOn("test$name")
+
+        it.executionData(new File(buildDir, "jacoco/test${name}.exec"))
+        it.sourceDirectories.from(sourceSets.main.allJava.srcDirs)
+        it.classDirectories.from(new File(buildDir, "jacocoClassDump/test$name"))
+
+        it.reports {
+            xml.enabled true
+            html.enabled true
+        }
+    }
+
+    check.dependsOn("jacocoTest${name}Report")
 }
-check.dependsOn('jacocoTestInGameReport')
 
 
 // Upload tasks
@@ -436,7 +438,7 @@ task checkRelease {
             ok = false
             project.logger.error("Must mention the changelog in whatsnew.md")
         } else {
-            whatsnew = whatsnew.getAt(0 ..< idx)
+            whatsnew = whatsnew.getAt(0..<idx)
         }
 
         // Check whatsnew and changelog match.
@@ -459,9 +461,7 @@ curseforge {
         releaseType = 'release'
         changelog = "Release notes can be found on the GitHub repository (https://github.com/SquidDev-CC/CC-Tweaked/releases/tag/v${mc_version}-${mod_version})."
 
-        relations {
-            incompatible "computercraft"
-        }
+        addGameVersion "${mc_version}"
     }
 }
 

config/pre-commit/config.yml

@@ -50,6 +50,6 @@ exclude: |
   (?x)^(
     src/generated|
     src/test/resources/test-rom/data/json-parsing/|
-    src/test/server-files/|
+    src/testMod/server-files/|
     config/idea/
   )

doc/index.md

@@ -1,11 +1,55 @@
-# ![CC: Tweaked](logo.png) [![Download CC: Tweaked on CurseForge](https://cf.way2muchnoise.eu/title/cc-tweaked.svg)](https://minecraft.curseforge.com/projects/cc-tweaked "Download CC: Tweaked on CurseForge")
+# ![CC: Tweaked](logo.png)
+CC: Tweaked is a mod for Minecraft which adds programmable computers, turtles and more to the game. A fork of the
+much-beloved [ComputerCraft], it continues its legacy with better performance, stability, and a wealth of new features.
 
-CC: Tweaked is a fork of [ComputerCraft], adding programmable computers, turtles and more to Minecraft.
+CC: Tweaked can be installed from [CurseForge] or [Modrinth]. It requires the [Minecraft Forge][forge] mod loader, but
+[versions are available for Fabric][ccrestitched].
 
-This website contains documentation for all Lua libraries and APIs from the latest version of CC: Tweaked. This
-documentation is still in development, so will most likely be incomplete. If you've found something you think is wrong,
-or would like to help out [please get in touch on GitHub][gh].
+## Features
+Controlled using the [Lua programming language][lua], CC: Tweaked's computers provides all the tools you need to start
+writing code and automating your Minecraft world.
 
+![A ComputerCraft terminal open and ready to be programmed.](images/basic-terminal.png){.big-image}
+
+While computers are incredibly powerful, they're rather limited by their inability to move about. *Turtles* are the
+solution here. They can move about the world, placing and breaking blocks, swinging a sword to protect you from zombies,
+or whatever else you program them to!
+
+![A turtle tunneling in Minecraft.](images/turtle.png){.big-image}
+
+Not all problems can be solved with a pickaxe though, and so CC: Tweaked also provides a bunch of additional peripherals
+for your computers. You can play a tune with speakers, display text or images on a monitor, connect all your
+computers together with modems, and much more.
+
+Computers can now also interact with inventories such as chests, allowing you to build complex inventory and item
+management systems.
+
+![A chest's contents being read by a computer and displayed on a monitor.](images/peripherals.png){.big-image}
+
+## Getting Started
+While ComputerCraft is lovely for both experienced programmers and for people who have never coded before, it can be a
+little daunting getting started. Thankfully, there's several fantastic tutorials out there:
+
+ - [Direwolf20's ComputerCraft tutorials](https://www.youtube.com/watch?v=wrUHUhfCY5A "ComputerCraft Tutorial Episode 1 - HELP! and Hello World")
+ - [Sethbling's ComputerCraft series](https://www.youtube.com/watch?v=DSsx4VSe-Uk "Programming Tutorial with Minecraft Turtles -- Ep. 1: Intro to Turtles and If-Then-Else_End")
+ - [Lyqyd's Computer Basics 1](http://www.computercraft.info/forums2/index.php?/topic/15033-computer-basics-i/ "Computer Basics I")
+
+Once you're a little more familiar with the mod, the sidebar and links below provide more detailed documentation on the
+various APIs and peripherals provided by the mod.
+
+If you get stuck, do pop in to the [Minecraft Computer Mod Discord guild][discord] or ComputerCraft's
+[IRC channel][irc].
+
+## Get Involved
+CC: Tweaked lives on [GitHub]. If you've got any ideas, feedback or bugs please do [create an issue][bug].
+
+[github]: https://github.com/SquidDev-CC/CC-Tweaked/ "CC: Tweaked on GitHub"
 [bug]: https://github.com/SquidDev-CC/CC-Tweaked/issues/new/choose
 [computercraft]: https://github.com/dan200/ComputerCraft "ComputerCraft on GitHub"
-[gh]: https://github.com/SquidDev-CC/CC-Tweaked "CC:Tweaked on GitHub"
+[curseforge]: https://minecraft.curseforge.com/projects/cc-tweaked "Download CC: Tweaked from CurseForge"
+[modrinth]: https://modrinth.com/mod/gu7yAYhd "Download CC: Tweaked from Modrinth"
+[forge]: https://files.minecraftforge.net/ "Download Minecraft Forge."
+[ccrestitched]: https://www.curseforge.com/minecraft/mc-mods/cc-restitched "Download CC: Restitched from CurseForge"
+[lua]: https://www.lua.org/ "Lua's main website"
+[discord]: https://discord.computercraft.cc "The Minecraft Computer Mods Discord"
+[irc]: http://webchat.esper.net/?channels=computercraft "IRC webchat on EsperNet"

doc/stub/global.lua

@@ -77,7 +77,7 @@ the prompt.
 @treturn string The text typed in.
 
 @see cc.completion For functions to help with completion.
-@usage Read an string and echo it back to the user
+@usage Read a string and echo it back to the user
 
     write("> ")
     local msg = read()
@@ -101,6 +101,9 @@ the prompt.
     write("> ")
     local msg = read(nil, history, function(text) return completion.choice(text, choices) end, "app")
     print(msg)
+
+@changed 1.74 Added `completeFn` parameter.
+@changed 1.80pr1 Added `default` parameter.
 ]]
 function read(replaceChar, history, completeFn, default) end
 
@@ -108,6 +111,7 @@ function read(replaceChar, history, completeFn, default) end
 --
 -- For example, `ComputerCraft 1.93.0 (Minecraft 1.15.2)`.
 -- @usage _HOST
+-- @since 1.76
 _HOST = _HOST
 
 --[[- The default computer settings as defined in the ComputerCraft
@@ -121,5 +125,6 @@ An example value to disable autocompletion:
     shell.autocomplete=false,lua.autocomplete=false,edit.autocomplete=false
 
 @usage _CC_DEFAULT_SETTINGS
+@since 1.77
 ]]
 _CC_DEFAULT_SETTINGS = _CC_DEFAULT_SETTINGS

doc/stub/os.lua

@@ -2,9 +2,6 @@
 
 --[[- Loads the given API into the global environment.
 
-**Warning** This function is deprecated. Use of this function will pollute the
-global table, use @{require} instead.
-
 This function loads and executes the file at the given path, and all global
 variables and functions exported by it will by available through the use of
 `myAPI.<function name>`, where `myAPI` is the base name of the API file.
@@ -12,7 +9,10 @@ variables and functions exported by it will by available through the use of
 @tparam string path The path of the API to load.
 @treturn boolean Whether or not the API was successfully loaded.
 
-@deprecated Use @{require}.
+@deprecated When possible it's best to avoid using this function. It pollutes
+the global table and can mask errors.
+
+@{require} should be used to load libraries instead.
 ]]
 function loadAPI(path) end
 
@@ -21,7 +21,7 @@ function loadAPI(path) end
 -- This effectively removes the specified table from `_G`.
 --
 -- @tparam string name The name of the API to unload.
--- @deprecated Use @{require}.
+-- @deprecated See @{os.loadAPI} for why.
 function unloadAPI(name) end
 
 --[[- Pause execution of the current thread and waits for any events matching

doc/stub/turtle.lua

@@ -1,7 +1,7 @@
 --[[- Craft a recipe based on the turtle's inventory.
 
 The turtle's inventory should set up like a crafting grid. For instance, to
-craft sticks, slots 1 and 5 should contain sticks. _All_ other slots should be
+craft sticks, slots 1 and 5 should contain planks. _All_ other slots should be
 empty, including those outside the crafting "grid".
 
 @tparam[opt=64] number limit The maximum number of crafting steps to run.

gradle.properties

@@ -1,6 +1,8 @@
 # Mod properties
-mod_version=1.97.1
+mod_version=1.98.2
 
 # Minecraft properties (update mods.toml when changing)
-mc_version=1.15.2
-forge_version=31.1.41
+mc_version=1.16.5
+mapping_version=2021.08.08
+forge_version=36.1.0
+# NO SERIOUSLY, UPDATE mods.toml WHEN CHANGING

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

package-lock.json

@@ -1,13 +1,265 @@
 {
   "name": "tweaked.cc",
   "version": "1.0.0",
-  "lockfileVersion": 1,
+  "lockfileVersion": 2,
   "requires": true,
+  "packages": {
+    "": {
+      "name": "tweaked.cc",
+      "version": "1.0.0",
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "preact": "^10.5.5",
+        "tslib": "^2.0.3"
+      },
+      "devDependencies": {
+        "@rollup/plugin-typescript": "^8.2.5",
+        "requirejs": "^2.3.6",
+        "rollup": "^2.33.1",
+        "terser": "^5.3.8",
+        "typescript": "^4.0.5"
+      }
+    },
+    "node_modules/@rollup/plugin-typescript": {
+      "version": "8.2.5",
+      "resolved": "https://registry.npmjs.org/@rollup/plugin-typescript/-/plugin-typescript-8.2.5.tgz",
+      "integrity": "sha512-QL/LvDol/PAGB2O0S7/+q2HpSUNodpw7z6nGn9BfoVCPOZ0r4EALrojFU29Bkoi2Hr2jgTocTejJ5GGWZfOxbQ==",
+      "dev": true,
+      "dependencies": {
+        "@rollup/pluginutils": "^3.1.0",
+        "resolve": "^1.17.0"
+      },
+      "engines": {
+        "node": ">=8.0.0"
+      },
+      "peerDependencies": {
+        "rollup": "^2.14.0",
+        "tslib": "*",
+        "typescript": ">=3.7.0"
+      }
+    },
+    "node_modules/@rollup/pluginutils": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@rollup/pluginutils/-/pluginutils-3.1.0.tgz",
+      "integrity": "sha512-GksZ6pr6TpIjHm8h9lSQ8pi8BE9VeubNT0OMJ3B5uZJ8pz73NPiqOtCog/x2/QzM1ENChPKxMDhiQuRHsqc+lg==",
+      "dev": true,
+      "dependencies": {
+        "@types/estree": "0.0.39",
+        "estree-walker": "^1.0.1",
+        "picomatch": "^2.2.2"
+      },
+      "engines": {
+        "node": ">= 8.0.0"
+      },
+      "peerDependencies": {
+        "rollup": "^1.20.0||^2.0.0"
+      }
+    },
+    "node_modules/@types/estree": {
+      "version": "0.0.39",
+      "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
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+    "node_modules/buffer-from": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
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+      "version": "2.20.3",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
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+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
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+      "dev": true,
+      "dependencies": {
+        "commander": "^2.20.0",
+        "source-map": "~0.7.2",
+        "source-map-support": "~0.5.19"
+      },
+      "bin": {
+        "terser": "bin/terser"
+      },
+      "engines": {
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+      }
+    },
+    "node_modules/tslib": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.3.1.tgz",
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+    },
+    "node_modules/typescript": {
+      "version": "4.3.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.3.5.tgz",
+      "integrity": "sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==",
+      "dev": true,
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=4.2.0"
+      }
+    }
+  },
   "dependencies": {
     "@rollup/plugin-typescript": {
-      "version": "6.1.0",
-      "resolved": "https://registry.npmjs.org/@rollup/plugin-typescript/-/plugin-typescript-6.1.0.tgz",
-      "integrity": "sha512-hJxaiE6WyNOsK+fZpbFh9CUijZYqPQuAOWO5khaGTUkM8DYNNyA2TDlgamecE+qLOG1G1+CwbWMAx3rbqpp6xQ==",
+      "version": "8.2.5",
+      "resolved": "https://registry.npmjs.org/@rollup/plugin-typescript/-/plugin-typescript-8.2.5.tgz",
+      "integrity": "sha512-QL/LvDol/PAGB2O0S7/+q2HpSUNodpw7z6nGn9BfoVCPOZ0r4EALrojFU29Bkoi2Hr2jgTocTejJ5GGWZfOxbQ==",
       "dev": true,
       "requires": {
         "@rollup/pluginutils": "^3.1.0",
@@ -32,9 +284,9 @@
       "dev": true
     },
     "buffer-from": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
-      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==",
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
+      "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==",
       "dev": true
     },
     "commander": {
@@ -50,9 +302,9 @@
       "dev": true
     },
     "fsevents": {
-      "version": "2.1.3",
-      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.1.3.tgz",
-      "integrity": "sha512-Auw9a4AxqWpa9GUfj370BMPzzyncfBABW8Mab7BGWBYDj4Isgq+cDKtx0i6u9jcX9pQDnswsaaOTgTmA5pEjuQ==",
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/fsevents/-/fsevents-2.3.2.tgz",
+      "integrity": "sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==",
       "dev": true,
       "optional": true
     },
@@ -72,30 +324,30 @@
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+      "version": "2.6.0",
+      "resolved": "https://registry.npmjs.org/is-core-module/-/is-core-module-2.6.0.tgz",
+      "integrity": "sha512-wShG8vs60jKfPWpF2KZRaAtvt3a20OAn7+IJ6hLPECpSABLcKtFKTTI4ZtH5QcBruBHlq+WsdHWyz0BCZW7svQ==",
       "dev": true,
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         "has": "^1.0.3"
       }
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     "path-parse": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.6.tgz",
-      "integrity": "sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==",
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.7.tgz",
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       "dev": true
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     "picomatch": {
-      "version": "2.2.2",
-      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.2.2.tgz",
-      "integrity": "sha512-q0M/9eZHzmr0AulXyPwNfZjtwZ/RBZlbN3K3CErVrk50T2ASYI7Bye0EvekFY3IP1Nt2DHu0re+V2ZHIpMkuWg==",
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.3.0.tgz",
+      "integrity": "sha512-lY1Q/PiJGC2zOv/z391WOTD+Z02bCgsFfvxoXXf6h7kv9o+WmsmzYqrAwY63sNgOxE4xEdq0WyUnXfKeBrSvYw==",
       "dev": true
     },
     "preact": {
-      "version": "10.5.5",
-      "resolved": "https://registry.npmjs.org/preact/-/preact-10.5.5.tgz",
-      "integrity": "sha512-5ONLNH1SXMzzbQoExZX4TELemNt+TEDb622xXFNfZngjjM9qtrzseJt+EfiUu4TZ6EJ95X5sE1ES4yqHFSIdhg=="
+      "version": "10.5.14",
+      "resolved": "https://registry.npmjs.org/preact/-/preact-10.5.14.tgz",
+      "integrity": "sha512-KojoltCrshZ099ksUZ2OQKfbH66uquFoxHSbnwKbTJHeQNvx42EmC7wQVWNuDt6vC5s3nudRHFtKbpY4ijKlaQ=="
     },
     "requirejs": {
       "version": "2.3.6",
@@ -104,22 +356,22 @@
       "dev": true
     },
     "resolve": {
-      "version": "1.18.1",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.18.1.tgz",
-      "integrity": "sha512-lDfCPaMKfOJXjy0dPayzPdF1phampNWr3qFCjAu+rw/qbQmr5jWH5xN2hwh9QKfw9E5v4hwV7A+jrCmL8yjjqA==",
+      "version": "1.20.0",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.20.0.tgz",
+      "integrity": "sha512-wENBPt4ySzg4ybFQW2TT1zMQucPK95HSh/nq2CFTZVOGut2+pQvSsgtda4d26YrYcr067wjbmzOG8byDPBX63A==",
       "dev": true,
       "requires": {
-        "is-core-module": "^2.0.0",
+        "is-core-module": "^2.2.0",
         "path-parse": "^1.0.6"
       }
     },
     "rollup": {
-      "version": "2.33.1",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.33.1.tgz",
-      "integrity": "sha512-uY4O/IoL9oNW8MMcbA5hcOaz6tZTMIh7qJHx/tzIJm+n1wLoY38BLn6fuy7DhR57oNFLMbDQtDeJoFURt5933w==",
+      "version": "2.56.2",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.56.2.tgz",
+      "integrity": "sha512-s8H00ZsRi29M2/lGdm1u8DJpJ9ML8SUOpVVBd33XNeEeL3NVaTiUcSBHzBdF3eAyR0l7VSpsuoVUGrRHq7aPwQ==",
       "dev": true,
       "requires": {
-        "fsevents": "~2.1.2"
+        "fsevents": "~2.3.2"
       }
     },
     "source-map": {
@@ -147,9 +399,9 @@
       }
     },
     "terser": {
-      "version": "5.3.8",
-      "resolved": "https://registry.npmjs.org/terser/-/terser-5.3.8.tgz",
-      "integrity": "sha512-zVotuHoIfnYjtlurOouTazciEfL7V38QMAOhGqpXDEg6yT13cF4+fEP9b0rrCEQTn+tT46uxgFsTZzhygk+CzQ==",
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-5.7.1.tgz",
+      "integrity": "sha512-b3e+d5JbHAe/JSjwsC3Zn55wsBIM7AsHLjKxT31kGCldgbpFePaFo+PiddtO6uwRZWRw7sPXmAN8dTW61xmnSg==",
       "dev": true,
       "requires": {
         "commander": "^2.20.0",
@@ -158,14 +410,14 @@
       }
     },
     "tslib": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.0.3.tgz",
-      "integrity": "sha512-uZtkfKblCEQtZKBF6EBXVZeQNl82yqtDQdv+eck8u7tdPxjLu2/lp5/uPW+um2tpuxINHWy3GhiccY7QgEaVHQ=="
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.3.1.tgz",
+      "integrity": "sha512-77EbyPPpMz+FRFRuAFlWMtmgUWGe9UOG2Z25NqCwiIjRhOf5iKGuzSe5P2w1laq+FkRy4p+PCuVkJSGkzTEKVw=="
     },
     "typescript": {
-      "version": "4.0.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.0.5.tgz",
-      "integrity": "sha512-ywmr/VrTVCmNTJ6iV2LwIrfG1P+lv6luD8sUJs+2eI9NLGigaN+nUQc13iHqisq7bra9lnmUSYqbJvegraBOPQ==",
+      "version": "4.3.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.3.5.tgz",
+      "integrity": "sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==",
       "dev": true
     }
   }

package.json

@@ -9,7 +9,7 @@
     "tslib": "^2.0.3"
   },
   "devDependencies": {
-    "@rollup/plugin-typescript": "^6.1.0",
+    "@rollup/plugin-typescript": "^8.2.5",
     "requirejs": "^2.3.6",
     "rollup": "^2.33.1",
     "terser": "^5.3.8",

src/generated/resources/assets/computercraft/blockstates/speaker.json

@@ -0,0 +1,19 @@
+{
+  "variants": {
+    "facing=north": {
+      "model": "computercraft:block/speaker"
+    },
+    "facing=south": {
+      "model": "computercraft:block/speaker",
+      "y": 180
+    },
+    "facing=west": {
+      "model": "computercraft:block/speaker",
+      "y": 270
+    },
+    "facing=east": {
+      "model": "computercraft:block/speaker",
+      "y": 90
+    }
+  }
+}

src/generated/resources/assets/computercraft/blockstates/turtle_advanced.json

@@ -0,0 +1,19 @@
+{
+  "variants": {
+    "facing=north": {
+      "model": "computercraft:block/turtle_advanced"
+    },
+    "facing=south": {
+      "model": "computercraft:block/turtle_advanced",
+      "y": 180
+    },
+    "facing=west": {
+      "model": "computercraft:block/turtle_advanced",
+      "y": 270
+    },
+    "facing=east": {
+      "model": "computercraft:block/turtle_advanced",
+      "y": 90
+    }
+  }
+}

src/generated/resources/assets/computercraft/blockstates/turtle_normal.json

@@ -0,0 +1,19 @@
+{
+  "variants": {
+    "facing=north": {
+      "model": "computercraft:block/turtle_normal"
+    },
+    "facing=south": {
+      "model": "computercraft:block/turtle_normal",
+      "y": 180
+    },
+    "facing=west": {
+      "model": "computercraft:block/turtle_normal",
+      "y": 270
+    },
+    "facing=east": {
+      "model": "computercraft:block/turtle_normal",
+      "y": 90
+    }
+  }
+}

src/generated/resources/assets/computercraft/blockstates/wired_modem_full.json

@@ -0,0 +1,16 @@
+{
+  "variants": {
+    "modem=false,peripheral=false": {
+      "model": "computercraft:block/wired_modem_full_off"
+    },
+    "modem=true,peripheral=false": {
+      "model": "computercraft:block/wired_modem_full_on"
+    },
+    "modem=false,peripheral=true": {
+      "model": "computercraft:block/wired_modem_full_off_peripheral"
+    },
+    "modem=true,peripheral=true": {
+      "model": "computercraft:block/wired_modem_full_on_peripheral"
+    }
+  }
+}

src/generated/resources/assets/computercraft/blockstates/wireless_modem_advanced.json

@@ -0,0 +1,54 @@
+{
+  "variants": {
+    "facing=down,on=false": {
+      "model": "computercraft:block/wireless_modem_advanced_off",
+      "x": 90,
+      "y": 90
+    },
+    "facing=up,on=false": {
+      "model": "computercraft:block/wireless_modem_advanced_off",
+      "x": 270,
+      "y": 90
+    },
+    "facing=north,on=false": {
+      "model": "computercraft:block/wireless_modem_advanced_off"
+    },
+    "facing=south,on=false": {
+      "model": "computercraft:block/wireless_modem_advanced_off",
+      "y": 180
+    },
+    "facing=west,on=false": {
+      "model": "computercraft:block/wireless_modem_advanced_off",
+      "y": 270
+    },
+    "facing=east,on=false": {
+      "model": "computercraft:block/wireless_modem_advanced_off",
+      "y": 90
+    },
+    "facing=down,on=true": {
+      "model": "computercraft:block/wireless_modem_advanced_on",
+      "x": 90,
+      "y": 90
+    },
+    "facing=up,on=true": {
+      "model": "computercraft:block/wireless_modem_advanced_on",
+      "x": 270,
+      "y": 90
+    },
+    "facing=north,on=true": {
+      "model": "computercraft:block/wireless_modem_advanced_on"
+    },
+    "facing=south,on=true": {
+      "model": "computercraft:block/wireless_modem_advanced_on",
+      "y": 180
+    },
+    "facing=west,on=true": {
+      "model": "computercraft:block/wireless_modem_advanced_on",
+      "y": 270
+    },
+    "facing=east,on=true": {
+      "model": "computercraft:block/wireless_modem_advanced_on",
+      "y": 90
+    }
+  }
+}

src/generated/resources/assets/computercraft/blockstates/wireless_modem_normal.json

@@ -0,0 +1,54 @@
+{
+  "variants": {
+    "facing=down,on=false": {
+      "model": "computercraft:block/wireless_modem_normal_off",
+      "x": 90,
+      "y": 90
+    },
+    "facing=up,on=false": {
+      "model": "computercraft:block/wireless_modem_normal_off",
+      "x": 270,
+      "y": 90
+    },
+    "facing=north,on=false": {
+      "model": "computercraft:block/wireless_modem_normal_off"
+    },
+    "facing=south,on=false": {
+      "model": "computercraft:block/wireless_modem_normal_off",
+      "y": 180
+    },
+    "facing=west,on=false": {
+      "model": "computercraft:block/wireless_modem_normal_off",
+      "y": 270
+    },
+    "facing=east,on=false": {
+      "model": "computercraft:block/wireless_modem_normal_off",
+      "y": 90
+    },
+    "facing=down,on=true": {
+      "model": "computercraft:block/wireless_modem_normal_on",
+      "x": 90,
+      "y": 90
+    },
+    "facing=up,on=true": {
+      "model": "computercraft:block/wireless_modem_normal_on",
+      "x": 270,
+      "y": 90
+    },
+    "facing=north,on=true": {
+      "model": "computercraft:block/wireless_modem_normal_on"
+    },
+    "facing=south,on=true": {
+      "model": "computercraft:block/wireless_modem_normal_on",
+      "y": 180
+    },
+    "facing=west,on=true": {
+      "model": "computercraft:block/wireless_modem_normal_on",
+      "y": 270
+    },
+    "facing=east,on=true": {
+      "model": "computercraft:block/wireless_modem_normal_on",
+      "y": 90
+    }
+  }
+}

src/generated/resources/assets/computercraft/models/block/computer_advanced_blinking.json

@@ -1,8 +1,8 @@
 {
-  "parent": "block/orientable",
+  "parent": "minecraft:block/orientable",
   "textures": {
-    "top": "computercraft:block/computer_advanced_top",
     "side": "computercraft:block/computer_advanced_side",
-    "front": "computercraft:block/computer_advanced_front_blink"
+    "front": "computercraft:block/computer_advanced_front_blink",
+    "top": "computercraft:block/computer_advanced_top"
   }
 }

src/generated/resources/assets/computercraft/models/block/computer_advanced_off.json

@@ -1,8 +1,8 @@
 {
-  "parent": "block/orientable",
+  "parent": "minecraft:block/orientable",
   "textures": {
-    "top": "computercraft:block/computer_advanced_top",
     "side": "computercraft:block/computer_advanced_side",
-    "front": "computercraft:block/computer_advanced_front"
+    "front": "computercraft:block/computer_advanced_front",
+    "top": "computercraft:block/computer_advanced_top"
   }
 }

src/generated/resources/assets/computercraft/models/block/computer_advanced_on.json

@@ -1,8 +1,8 @@
 {
-  "parent": "block/orientable",
+  "parent": "minecraft:block/orientable",
   "textures": {
-    "top": "computercraft:block/computer_advanced_top",
     "side": "computercraft:block/computer_advanced_side",
-    "front": "computercraft:block/computer_advanced_front_on"
+    "front": "computercraft:block/computer_advanced_front_on",
+    "top": "computercraft:block/computer_advanced_top"
   }
 }

src/generated/resources/assets/computercraft/models/block/computer_command_blinking.json

@@ -1,8 +1,8 @@
 {
-  "parent": "block/orientable",
+  "parent": "minecraft:block/orientable",
   "textures": {
-    "top": "computercraft:block/computer_command_top",
     "side": "computercraft:block/computer_command_side",
-    "front": "computercraft:block/computer_command_front_blink"
+    "front": "computercraft:block/computer_command_front_blink",
+    "top": "computercraft:block/computer_command_top"
   }
 }

src/generated/resources/assets/computercraft/models/block/computer_command_off.json

@@ -1,8 +1,8 @@
 {
-  "parent": "block/orientable",
+  "parent": "minecraft:block/orientable",
   "textures": {
-    "top": "computercraft:block/computer_command_top",
     "side": "computercraft:block/computer_command_side",
-    "front": "computercraft:block/computer_command_front"
+    "front": "computercraft:block/computer_command_front",
+    "top": "computercraft:block/computer_command_top"
   }
 }

src/generated/resources/assets/computercraft/models/block/computer_command_on.json

@@ -1,8 +1,8 @@
 {
-  "parent": "block/orientable",
+  "parent": "minecraft:block/orientable",
   "textures": {
-    "top": "computercraft:block/computer_command_top",
     "side": "computercraft:block/computer_command_side",
-    "front": "computercraft:block/computer_command_front_on"
+    "front": "computercraft:block/computer_command_front_on",
+    "top": "computercraft:block/computer_command_top"
   }
 }

src/generated/resources/assets/computercraft/models/block/computer_normal_blinking.json

@@ -1,8 +1,8 @@
 {
-  "parent": "block/orientable",
+  "parent": "minecraft:block/orientable",
   "textures": {
-    "top": "computercraft:block/computer_normal_top",
     "side": "computercraft:block/computer_normal_side",
-    "front": "computercraft:block/computer_normal_front_blink"
+    "front": "computercraft:block/computer_normal_front_blink",
+    "top": "computercraft:block/computer_normal_top"
   }
 }

src/generated/resources/assets/computercraft/models/block/computer_normal_off.json

@@ -1,8 +1,8 @@
 {
-  "parent": "block/orientable",
+  "parent": "minecraft:block/orientable",
   "textures": {
-    "top": "computercraft:block/computer_normal_top",
     "side": "computercraft:block/computer_normal_side",
-    "front": "computercraft:block/computer_normal_front"
+    "front": "computercraft:block/computer_normal_front",
+    "top": "computercraft:block/computer_normal_top"
   }
 }

src/generated/resources/assets/computercraft/models/block/computer_normal_on.json

@@ -1,8 +1,8 @@
 {
-  "parent": "block/orientable",
+  "parent": "minecraft:block/orientable",
   "textures": {
-    "top": "computercraft:block/computer_normal_top",
     "side": "computercraft:block/computer_normal_side",
-    "front": "computercraft:block/computer_normal_front_on"
+    "front": "computercraft:block/computer_normal_front_on",
+    "top": "computercraft:block/computer_normal_top"
   }
 }

src/generated/resources/assets/computercraft/models/block/monitor_advanced_item.json

@@ -0,0 +1,8 @@
+{
+  "parent": "minecraft:block/orientable",
+  "textures": {
+    "side": "computercraft:block/monitor_advanced_4",
+    "front": "computercraft:block/monitor_advanced_15",
+    "top": "computercraft:block/monitor_advanced_0"
+  }
+}

src/generated/resources/assets/computercraft/models/block/monitor_normal_item.json

@@ -0,0 +1,8 @@
+{
+  "parent": "minecraft:block/orientable",
+  "textures": {
+    "side": "computercraft:block/monitor_normal_4",
+    "front": "computercraft:block/monitor_normal_15",
+    "top": "computercraft:block/monitor_normal_0"
+  }
+}

src/generated/resources/assets/computercraft/models/block/speaker.json

@@ -0,0 +1,8 @@
+{
+  "parent": "minecraft:block/orientable",
+  "textures": {
+    "side": "computercraft:block/speaker_side",
+    "front": "computercraft:block/speaker_front",
+    "top": "computercraft:block/speaker_top"
+  }
+}

src/generated/resources/assets/computercraft/models/block/turtle_advanced.json

@@ -0,0 +1,4 @@
+{
+  "loader": "computercraft:turtle",
+  "model": "computercraft:block/turtle_advanced_base"
+}

src/generated/resources/assets/computercraft/models/block/turtle_advanced_base.json

@@ -0,0 +1,6 @@
+{
+  "parent": "computercraft:block/turtle_base",
+  "textures": {
+    "texture": "computercraft:block/turtle_advanced"
+  }
+}

src/generated/resources/assets/computercraft/models/block/turtle_normal.json

@@ -0,0 +1,4 @@
+{
+  "loader": "computercraft:turtle",
+  "model": "computercraft:block/turtle_normal_base"
+}

src/generated/resources/assets/computercraft/models/block/turtle_normal_base.json

@@ -0,0 +1,6 @@
+{
+  "parent": "computercraft:block/turtle_base",
+  "textures": {
+    "texture": "computercraft:block/turtle_normal"
+  }
+}

src/generated/resources/assets/computercraft/models/block/wired_modem_full_off.json

@@ -0,0 +1,6 @@
+{
+  "parent": "minecraft:block/cube_all",
+  "textures": {
+    "all": "computercraft:block/wired_modem_face"
+  }
+}

src/generated/resources/assets/computercraft/models/block/wired_modem_full_off_peripheral.json

@@ -0,0 +1,6 @@
+{
+  "parent": "minecraft:block/cube_all",
+  "textures": {
+    "all": "computercraft:block/wired_modem_face_peripheral"
+  }
+}

src/generated/resources/assets/computercraft/models/block/wired_modem_full_on.json

@@ -0,0 +1,6 @@
+{
+  "parent": "minecraft:block/cube_all",
+  "textures": {
+    "all": "computercraft:block/wired_modem_face_on"
+  }
+}

src/generated/resources/assets/computercraft/models/block/wired_modem_full_on_peripheral.json

@@ -0,0 +1,6 @@
+{
+  "parent": "minecraft:block/cube_all",
+  "textures": {
+    "all": "computercraft:block/wired_modem_face_peripheral_on"
+  }
+}

src/generated/resources/assets/computercraft/models/block/wired_modem_off.json

@@ -0,0 +1,7 @@
+{
+  "parent": "computercraft:block/modem",
+  "textures": {
+    "front": "computercraft:block/wired_modem_face",
+    "back": "computercraft:block/modem_back"
+  }
+}

src/generated/resources/assets/computercraft/models/block/wired_modem_off_peripheral.json

@@ -0,0 +1,7 @@
+{
+  "parent": "computercraft:block/modem",
+  "textures": {
+    "front": "computercraft:block/wired_modem_face_peripheral",
+    "back": "computercraft:block/modem_back"
+  }
+}

src/generated/resources/assets/computercraft/models/block/wired_modem_on.json

@@ -0,0 +1,7 @@
+{
+  "parent": "computercraft:block/modem",
+  "textures": {
+    "front": "computercraft:block/wired_modem_face_on",
+    "back": "computercraft:block/modem_back"
+  }
+}

src/generated/resources/assets/computercraft/models/block/wired_modem_on_peripheral.json

@@ -0,0 +1,7 @@
+{
+  "parent": "computercraft:block/modem",
+  "textures": {
+    "front": "computercraft:block/wired_modem_face_peripheral_on",
+    "back": "computercraft:block/modem_back"
+  }
+}

src/generated/resources/assets/computercraft/models/block/wireless_modem_advanced_off.json

@@ -0,0 +1,7 @@
+{
+  "parent": "computercraft:block/modem",
+  "textures": {
+    "front": "computercraft:block/wireless_modem_advanced_face",
+    "back": "computercraft:block/modem_back"
+  }
+}

src/generated/resources/assets/computercraft/models/block/wireless_modem_advanced_on.json

@@ -0,0 +1,7 @@
+{
+  "parent": "computercraft:block/modem",
+  "textures": {
+    "front": "computercraft:block/wireless_modem_advanced_face_on",
+    "back": "computercraft:block/modem_back"
+  }
+}

src/generated/resources/assets/computercraft/models/block/wireless_modem_normal_off.json

@@ -0,0 +1,7 @@
+{
+  "parent": "computercraft:block/modem",
+  "textures": {
+    "front": "computercraft:block/wireless_modem_normal_face",
+    "back": "computercraft:block/modem_back"
+  }
+}

src/generated/resources/assets/computercraft/models/block/wireless_modem_normal_on.json

@@ -0,0 +1,7 @@
+{
+  "parent": "computercraft:block/modem",
+  "textures": {
+    "front": "computercraft:block/wireless_modem_normal_face_on",
+    "back": "computercraft:block/modem_back"
+  }
+}

src/generated/resources/assets/computercraft/models/item/computer_advanced.json

@@ -0,0 +1,3 @@
+{
+  "parent": "computercraft:block/computer_advanced_blinking"
+}

src/generated/resources/assets/computercraft/models/item/computer_command.json

@@ -0,0 +1,3 @@
+{
+  "parent": "computercraft:block/computer_command_blinking"
+}

src/generated/resources/assets/computercraft/models/item/computer_normal.json

@@ -0,0 +1,3 @@
+{
+  "parent": "computercraft:block/computer_normal_blinking"
+}

src/generated/resources/assets/computercraft/models/item/monitor_advanced.json

@@ -0,0 +1,3 @@
+{
+  "parent": "computercraft:block/monitor_advanced_item"
+}

src/generated/resources/assets/computercraft/models/item/monitor_normal.json

@@ -0,0 +1,3 @@
+{
+  "parent": "computercraft:block/monitor_normal_item"
+}

src/generated/resources/assets/computercraft/models/item/speaker.json

@@ -0,0 +1,3 @@
+{
+  "parent": "computercraft:block/speaker"
+}

src/generated/resources/assets/computercraft/models/item/turtle_advanced.json

@@ -0,0 +1,3 @@
+{
+  "parent": "computercraft:block/turtle_advanced"
+}

src/generated/resources/assets/computercraft/models/item/turtle_normal.json

@@ -0,0 +1,3 @@
+{
+  "parent": "computercraft:block/turtle_normal"
+}

src/generated/resources/assets/computercraft/models/item/wired_modem.json

@@ -0,0 +1,3 @@
+{
+  "parent": "computercraft:block/wired_modem_off"
+}

src/generated/resources/assets/computercraft/models/item/wired_modem_full.json

@@ -0,0 +1,3 @@
+{
+  "parent": "computercraft:block/wired_modem_full_off"
+}

src/generated/resources/assets/computercraft/models/item/wireless_modem_advanced.json

@@ -0,0 +1,3 @@
+{
+  "parent": "computercraft:block/wireless_modem_advanced_off"
+}

src/generated/resources/assets/computercraft/models/item/wireless_modem_normal.json

@@ -0,0 +1,3 @@
+{
+  "parent": "computercraft:block/wireless_modem_normal_off"
+}

src/generated/resources/data/computercraft/advancements/recipes/computercraft/printed_book.json

@@ -0,0 +1,32 @@
+{
+  "parent": "minecraft:recipes/root",
+  "rewards": {
+    "recipes": [
+      "computercraft:printed_book"
+    ]
+  },
+  "criteria": {
+    "has_printer": {
+      "trigger": "minecraft:inventory_changed",
+      "conditions": {
+        "items": [
+          {
+            "item": "computercraft:printer"
+          }
+        ]
+      }
+    },
+    "has_the_recipe": {
+      "trigger": "minecraft:recipe_unlocked",
+      "conditions": {
+        "recipe": "computercraft:printed_book"
+      }
+    }
+  },
+  "requirements": [
+    [
+      "has_printer",
+      "has_the_recipe"
+    ]
+  ]
+}

src/generated/resources/data/computercraft/advancements/recipes/computercraft/printed_pages.json

@@ -0,0 +1,32 @@
+{
+  "parent": "minecraft:recipes/root",
+  "rewards": {
+    "recipes": [
+      "computercraft:printed_pages"
+    ]
+  },
+  "criteria": {
+    "has_printer": {
+      "trigger": "minecraft:inventory_changed",
+      "conditions": {
+        "items": [
+          {
+            "item": "computercraft:printer"
+          }
+        ]
+      }
+    },
+    "has_the_recipe": {
+      "trigger": "minecraft:recipe_unlocked",
+      "conditions": {
+        "recipe": "computercraft:printed_pages"
+      }
+    }
+  },
+  "requirements": [
+    [
+      "has_printer",
+      "has_the_recipe"
+    ]
+  ]
+}

src/generated/resources/data/computercraft/advancements/recipes/decorations/skull_cloudy.json

@@ -0,0 +1,32 @@
+{
+  "parent": "minecraft:recipes/root",
+  "rewards": {
+    "recipes": [
+      "computercraft:skull_cloudy"
+    ]
+  },
+  "criteria": {
+    "has_monitor": {
+      "trigger": "minecraft:inventory_changed",
+      "conditions": {
+        "items": [
+          {
+            "item": "computercraft:monitor_normal"
+          }
+        ]
+      }
+    },
+    "has_the_recipe": {
+      "trigger": "minecraft:recipe_unlocked",
+      "conditions": {
+        "recipe": "computercraft:skull_cloudy"
+      }
+    }
+  },
+  "requirements": [
+    [
+      "has_monitor",
+      "has_the_recipe"
+    ]
+  ]
+}

src/generated/resources/data/computercraft/advancements/recipes/decorations/skull_dan200.json

@@ -0,0 +1,32 @@
+{
+  "parent": "minecraft:recipes/root",
+  "rewards": {
+    "recipes": [
+      "computercraft:skull_dan200"
+    ]
+  },
+  "criteria": {
+    "has_computer": {
+      "trigger": "minecraft:inventory_changed",
+      "conditions": {
+        "items": [
+          {
+            "item": "computercraft:computer_advanced"
+          }
+        ]
+      }
+    },
+    "has_the_recipe": {
+      "trigger": "minecraft:recipe_unlocked",
+      "conditions": {
+        "recipe": "computercraft:skull_dan200"
+      }
+    }
+  },
+  "requirements": [
+    [
+      "has_computer",
+      "has_the_recipe"
+    ]
+  ]
+}

src/generated/resources/data/computercraft/loot_tables/blocks/cable.json

@@ -0,0 +1,52 @@
+{
+  "type": "minecraft:block",
+  "pools": [
+    {
+      "name": "cable",
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "computercraft:cable"
+        }
+      ],
+      "conditions": [
+        {
+          "condition": "minecraft:survives_explosion"
+        },
+        {
+          "condition": "minecraft:block_state_property",
+          "block": "computercraft:cable",
+          "properties": {
+            "cable": "true"
+          }
+        }
+      ]
+    },
+    {
+      "name": "wired_modem",
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "minecraft:item",
+          "name": "computercraft:wired_modem"
+        }
+      ],
+      "conditions": [
+        {
+          "condition": "minecraft:survives_explosion"
+        },
+        {
+          "condition": "minecraft:inverted",
+          "term": {
+            "condition": "minecraft:block_state_property",
+            "block": "computercraft:cable",
+            "properties": {
+              "modem": "none"
+            }
+          }
+        }
+      ]
+    }
+  ]
+}

src/generated/resources/data/computercraft/recipes/colour.json

@@ -0,0 +1,3 @@
+{
+  "type": "computercraft:colour"
+}

src/generated/resources/data/computercraft/recipes/disk.json

@@ -0,0 +1,3 @@
+{
+  "type": "computercraft:disk"
+}

src/generated/resources/data/computercraft/recipes/pocket_computer_upgrade.json

@@ -0,0 +1,3 @@
+{
+  "type": "computercraft:pocket_computer_upgrade"
+}

src/generated/resources/data/computercraft/recipes/printed_book.json

@@ -0,0 +1,17 @@
+{
+  "type": "computercraft:impostor_shapeless",
+  "ingredients": [
+    {
+      "tag": "forge:leather"
+    },
+    {
+      "item": "computercraft:printed_page"
+    },
+    {
+      "tag": "forge:string"
+    }
+  ],
+  "result": {
+    "item": "computercraft:printed_book"
+  }
+}

src/generated/resources/data/computercraft/recipes/printed_pages.json

@@ -0,0 +1,17 @@
+{
+  "type": "computercraft:impostor_shapeless",
+  "ingredients": [
+    {
+      "item": "computercraft:printed_page"
+    },
+    {
+      "item": "computercraft:printed_page"
+    },
+    {
+      "tag": "forge:string"
+    }
+  ],
+  "result": {
+    "item": "computercraft:printed_pages"
+  }
+}

src/generated/resources/data/computercraft/recipes/printout.json

@@ -0,0 +1,3 @@
+{
+  "type": "computercraft:printout"
+}

src/generated/resources/data/computercraft/recipes/skull_cloudy.json

@@ -0,0 +1,15 @@
+{
+  "type": "minecraft:crafting_shapeless",
+  "ingredients": [
+    {
+      "tag": "forge:heads"
+    },
+    {
+      "item": "computercraft:monitor_normal"
+    }
+  ],
+  "result": {
+    "item": "minecraft:player_head",
+    "nbt": "{SkullOwner:{Id:\"6d074736-b1e9-4378-a99b-bd8777821c9c\",Name:\"Cloudhunter\"}}"
+  }
+}

src/generated/resources/data/computercraft/recipes/skull_dan200.json

@@ -0,0 +1,15 @@
+{
+  "type": "minecraft:crafting_shapeless",
+  "ingredients": [
+    {
+      "tag": "forge:heads"
+    },
+    {
+      "item": "computercraft:computer_advanced"
+    }
+  ],
+  "result": {
+    "item": "minecraft:player_head",
+    "nbt": "{SkullOwner:{Id:\"f3c8d69b-0776-4512-8434-d1b2165909eb\",Name:\"dan200\"}}"
+  }
+}

src/generated/resources/data/computercraft/recipes/turtle_upgrade.json

@@ -0,0 +1,3 @@
+{
+  "type": "computercraft:turtle_upgrade"
+}

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

@@ -58,7 +58,7 @@ 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();
@@ -101,7 +101,7 @@ 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/lua/ILuaContext.java

@@ -27,4 +27,18 @@ public interface ILuaContext
      * @see LuaFunction#mainThread() To run functions on the main thread and return their results synchronously.
      */
     long issueMainThreadTask( @Nonnull ILuaTask task ) throws LuaException;
+
+    /**
+     * Queue a task to be executed on the main server thread at the beginning of next tick, waiting for it to complete.
+     * This should be used when you need to interact with the world in a thread-safe manner.
+     *
+     * Note that the return values of your task are handled as events, meaning more complex objects such as maps or
+     * {@link IDynamicLuaObject} will not preserve their identities.
+     *
+     * @param task The task to execute on the main thread.
+     * @return The objects returned by {@code task}.
+     * @throws LuaException If the task could not be queued, or if the task threw an exception.
+     */
+    @Nonnull
+    MethodResult executeMainThreadTask( @Nonnull ILuaTask task ) throws LuaException;
 }

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/ClientRegistry.java

@@ -24,6 +24,9 @@ import net.minecraft.client.gui.ScreenManager;
 import net.minecraft.client.renderer.RenderType;
 import net.minecraft.client.renderer.RenderTypeLookup;
 import net.minecraft.client.renderer.model.ModelResourceLocation;
+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.client.event.ColorHandlerEvent;
@@ -35,6 +38,8 @@ 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;
+
 /**
  * Registers textures and models for items.
  */
@@ -137,8 +142,28 @@ public final class ClientRegistry
         net.minecraftforge.fml.client.registry.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( "coloured",
+            ( 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()
     {
         // My IDE doesn't think so, but we do actually need these generics.

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/SoundManager.java

@@ -12,7 +12,7 @@ import net.minecraft.client.audio.LocatableSound;
 import net.minecraft.client.audio.SoundHandler;
 import net.minecraft.util.SoundCategory;
 import net.minecraft.util.SoundEvent;
-import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.math.vector.Vector3d;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -22,7 +22,7 @@ public class SoundManager
 {
     private static final Map<UUID, MoveableSound> sounds = new HashMap<>();
 
-    public static void playSound( UUID source, Vec3d position, SoundEvent event, float volume, float pitch )
+    public static void playSound( UUID source, Vector3d position, SoundEvent event, float volume, float pitch )
     {
         SoundHandler soundManager = Minecraft.getInstance().getSoundManager();
 
@@ -42,7 +42,7 @@ public class SoundManager
         Minecraft.getInstance().getSoundManager().stop( sound );
     }
 
-    public static void moveSound( UUID source, Vec3d position )
+    public static void moveSound( UUID source, Vector3d position )
     {
         MoveableSound sound = sounds.get( source );
         if( sound != null ) sound.setPosition( position );
@@ -55,15 +55,16 @@ public class SoundManager
 
     private static class MoveableSound extends LocatableSound implements ITickableSound
     {
-        protected MoveableSound( SoundEvent sound, Vec3d position, float volume, float pitch )
+        protected MoveableSound( SoundEvent sound, Vector3d position, float volume, float pitch )
         {
             super( sound, SoundCategory.RECORDS );
             setPosition( position );
             this.volume = volume;
             this.pitch = pitch;
+            attenuation = ISound.AttenuationType.LINEAR;
         }
 
-        void setPosition( Vec3d position )
+        void setPosition( Vector3d position )
         {
             x = (float) position.x();
             y = (float) position.y();

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

@@ -5,19 +5,41 @@
  */
 package dan200.computercraft.client.gui;
 
+import com.mojang.blaze3d.matrix.MatrixStack;
+import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.client.gui.widgets.ComputerSidebar;
 import dan200.computercraft.client.gui.widgets.WidgetTerminal;
 import dan200.computercraft.shared.computer.core.ClientComputer;
 import dan200.computercraft.shared.computer.core.ComputerFamily;
 import dan200.computercraft.shared.computer.inventory.ContainerComputerBase;
+import dan200.computercraft.shared.computer.upload.FileUpload;
+import dan200.computercraft.shared.computer.upload.UploadResult;
+import dan200.computercraft.shared.network.NetworkHandler;
+import dan200.computercraft.shared.network.server.ContinueUploadMessage;
+import dan200.computercraft.shared.network.server.UploadFileMessage;
 import net.minecraft.client.gui.screen.inventory.ContainerScreen;
-import net.minecraft.client.gui.widget.Widget;
 import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.util.text.ITextComponent;
+import net.minecraft.util.text.TranslationTextComponent;
 import org.lwjgl.glfw.GLFW;
 
+import javax.annotation.Nonnull;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.SeekableByteChannel;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
 public abstract class ComputerScreenBase<T extends ContainerComputerBase> extends ContainerScreen<T>
 {
+    private static final ITextComponent OK = new TranslationTextComponent( "gui.ok" );
+    private static final ITextComponent CANCEL = new TranslationTextComponent( "gui.cancel" );
+    private static final ITextComponent OVERWRITE = new TranslationTextComponent( "gui.computercraft.upload.overwrite_button" );
+
     protected WidgetTerminal terminal;
     protected final ClientComputer computer;
     protected final ComputerFamily family;
@@ -73,16 +95,11 @@ public abstract class ComputerScreenBase<T extends ContainerComputerBase> extend
 
 
     @Override
-    public final void render( int mouseX, int mouseY, float partialTicks )
+    public final void render( @Nonnull MatrixStack stack, int mouseX, int mouseY, float partialTicks )
     {
-        renderBackground();
-        super.render( mouseX, mouseY, partialTicks );
-        renderTooltip( mouseX, mouseY );
-
-        for( Widget widget : buttons )
-        {
-            if( widget.isHovered() ) widget.renderToolTip( mouseX, mouseY );
-        }
+        renderBackground( stack );
+        super.render( stack, mouseX, mouseY, partialTicks );
+        renderTooltip( stack, mouseX, mouseY );
     }
 
     @Override
@@ -91,4 +108,101 @@ public abstract class ComputerScreenBase<T extends ContainerComputerBase> extend
         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.
+    }
+
+    @Override
+    public void onFilesDrop( @Nonnull List<Path> files )
+    {
+        if( files.isEmpty() ) return;
+
+        if( computer == null || !computer.isOn() )
+        {
+            alert( UploadResult.FAILED_TITLE, UploadResult.COMPUTER_OFF_MSG );
+            return;
+        }
+
+        long size = 0;
+
+        List<FileUpload> toUpload = new ArrayList<>();
+        for( Path file : files )
+        {
+            // TODO: Recurse directories? If so, we probably want to shunt this off-thread.
+            if( !Files.isRegularFile( file ) ) continue;
+
+            try( SeekableByteChannel sbc = Files.newByteChannel( file ) )
+            {
+                long fileSize = sbc.size();
+                if( fileSize > UploadFileMessage.MAX_SIZE || (size += fileSize) >= UploadFileMessage.MAX_SIZE )
+                {
+                    alert( UploadResult.FAILED_TITLE, UploadResult.TOO_MUCH_MSG );
+                    return;
+                }
+
+                ByteBuffer buffer = ByteBuffer.allocateDirect( (int) fileSize );
+                sbc.read( buffer );
+                buffer.flip();
+
+                toUpload.add( new FileUpload( file.getFileName().toString(), buffer ) );
+            }
+            catch( IOException e )
+            {
+                ComputerCraft.log.error( "Failed uploading files", e );
+                alert( UploadResult.FAILED_TITLE, new TranslationTextComponent( "computercraft.gui.upload.failed.generic", e.getMessage() ) );
+            }
+        }
+
+        if( toUpload.size() > 0 )
+        {
+            NetworkHandler.sendToServer( new UploadFileMessage( computer.getInstanceID(), toUpload ) );
+        }
+    }
+
+    public void uploadResult( UploadResult result, ITextComponent message )
+    {
+        switch( result )
+        {
+            case SUCCESS:
+                alert( UploadResult.SUCCESS_TITLE, message );
+                break;
+            case ERROR:
+                alert( UploadResult.FAILED_TITLE, message );
+                break;
+            case CONFIRM_OVERWRITE:
+                OptionScreen.show(
+                    minecraft, UploadResult.UPLOAD_OVERWRITE, message,
+                    Arrays.asList(
+                        OptionScreen.newButton( CANCEL, b -> cancelUpload() ),
+                        OptionScreen.newButton( OVERWRITE, b -> continueUpload() )
+                    ),
+                    this::cancelUpload
+                );
+                break;
+        }
+    }
+
+    private void continueUpload()
+    {
+        if( minecraft.screen instanceof OptionScreen ) ((OptionScreen) minecraft.screen).disable();
+        NetworkHandler.sendToServer( new ContinueUploadMessage( computer.getInstanceID(), true ) );
+    }
+
+    private void cancelUpload()
+    {
+        minecraft.setScreen( this );
+        NetworkHandler.sendToServer( new ContinueUploadMessage( computer.getInstanceID(), false ) );
+    }
+
+    private void alert( ITextComponent title, ITextComponent message )
+    {
+        OptionScreen.show( minecraft, title, message,
+            Collections.singletonList( OptionScreen.newButton( OK, b -> minecraft.setScreen( this ) ) ),
+            () -> minecraft.setScreen( this )
+        );
+    }
 }

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.ComputerSidebar;
@@ -17,6 +18,8 @@ import dan200.computercraft.shared.pocket.inventory.ContainerPocketComputer;
 import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.util.text.ITextComponent;
 
+import javax.annotation.Nonnull;
+
 import static dan200.computercraft.client.render.ComputerBorderRenderer.BORDER;
 
 public final class GuiComputer<T extends ContainerComputerBase> extends ComputerScreenBase<T>
@@ -69,12 +72,12 @@ public final class GuiComputer<T extends ContainerComputerBase> extends Computer
     }
 
     @Override
-    public void renderBg( float partialTicks, int mouseX, int mouseY )
+    public void renderBg( @Nonnull MatrixStack stack, float partialTicks, int mouseX, int mouseY )
     {
         // Draw a border around the terminal
         RenderSystem.color4f( 1, 1, 1, 1 );
         minecraft.getTextureManager().bind( ComputerBorderRenderer.getTexture( family ) );
         ComputerBorderRenderer.render( terminal.x, terminal.y, getBlitOffset(), terminal.getWidth(), terminal.getHeight() );
-        ComputerSidebar.renderBackground( leftPos, topPos + sidebarYOffset );
+        ComputerSidebar.renderBackground( stack, leftPos, topPos + sidebarYOffset );
     }
 }

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" );
@@ -23,28 +25,20 @@ public class GuiPrinter extends ContainerScreen<ContainerPrinter>
     }
 
     @Override
-    protected void renderLabels( 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 );
-    }
-
-    @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.ComputerSidebar;
@@ -16,6 +17,8 @@ import net.minecraft.entity.player.PlayerInventory;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.text.ITextComponent;
 
+import javax.annotation.Nonnull;
+
 import static dan200.computercraft.shared.turtle.inventory.ContainerTurtle.*;
 
 public class GuiTurtle extends ComputerScreenBase<ContainerTurtle>
@@ -47,13 +50,11 @@ public class GuiTurtle extends ComputerScreenBase<ContainerTurtle>
     }
 
     @Override
-    protected void renderBg( float partialTicks, int mouseX, int mouseY )
+    protected void renderBg( @Nonnull MatrixStack transform, float partialTicks, int mouseX, int mouseY )
     {
         boolean advanced = family == ComputerFamily.ADVANCED;
-
-        RenderSystem.color4f( 1.0F, 1.0F, 1.0F, 1.0F );
         minecraft.getTextureManager().bind( advanced ? BACKGROUND_ADVANCED : BACKGROUND_NORMAL );
-        blit( leftPos + ComputerSidebar.WIDTH, topPos, 0, 0, TEX_WIDTH, TEX_HEIGHT );
+        blit( transform, leftPos + ComputerSidebar.WIDTH, topPos, 0, 0, TEX_WIDTH, TEX_HEIGHT );
 
         int slot = getMenu().getSelectedSlot();
         if( slot >= 0 )
@@ -61,13 +62,13 @@ public class GuiTurtle extends ComputerScreenBase<ContainerTurtle>
             RenderSystem.color4f( 1.0F, 1.0F, 1.0F, 1.0F );
             int slotX = slot % 4;
             int slotY = slot / 4;
-            blit(
+            blit( transform,
                 leftPos + TURTLE_START_X - 2 + slotX * 18, topPos + PLAYER_START_Y - 2 + slotY * 18,
                 0, 217, 24, 24
             );
         }
 
         minecraft.getTextureManager().bind( advanced ? ComputerBorderRenderer.BACKGROUND_ADVANCED : ComputerBorderRenderer.BACKGROUND_NORMAL );
-        ComputerSidebar.renderBackground( leftPos, topPos + sidebarYOffset );
+        ComputerSidebar.renderBackground( transform, leftPos, topPos + sidebarYOffset );
     }
 }

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

@@ -0,0 +1,127 @@
+/*
+ * This file is part of ComputerCraft - http://www.computercraft.info
+ * Copyright Daniel Ratcliffe, 2011-2021. Do not distribute without permission.
+ * Send enquiries to dratcliffe@gmail.com
+ */
+package dan200.computercraft.client.gui;
+
+import com.mojang.blaze3d.matrix.MatrixStack;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.gui.IBidiRenderer;
+import net.minecraft.client.gui.screen.Screen;
+import net.minecraft.client.gui.widget.Widget;
+import net.minecraft.client.gui.widget.button.Button;
+import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.text.ITextComponent;
+
+import javax.annotation.Nonnull;
+import java.util.List;
+
+public final class OptionScreen extends Screen
+{
+    private static final ResourceLocation BACKGROUND = new ResourceLocation( "computercraft", "textures/gui/blank_screen.png" );
+
+    public static final int BUTTON_WIDTH = 100;
+    public static final int BUTTON_HEIGHT = 20;
+
+    private static final int PADDING = 16;
+    private static final int FONT_HEIGHT = 9;
+
+    private int x;
+    private int y;
+    private int innerWidth;
+    private int innerHeight;
+
+    private IBidiRenderer messageRenderer;
+    private final ITextComponent message;
+    private final List<Widget> buttons;
+    private final Runnable exit;
+
+    private final Screen originalScreen;
+
+    private OptionScreen( ITextComponent title, ITextComponent message, List<Widget> buttons, Runnable exit, Screen originalScreen )
+    {
+        super( title );
+        this.message = message;
+        this.buttons = buttons;
+        this.exit = exit;
+        this.originalScreen = originalScreen;
+    }
+
+    public static void show( Minecraft minecraft, ITextComponent title, ITextComponent message, List<Widget> buttons, Runnable exit )
+    {
+        minecraft.setScreen( new OptionScreen( title, message, buttons, exit, unwrap( minecraft.screen ) ) );
+    }
+
+    public static Screen unwrap( Screen screen )
+    {
+        return screen instanceof OptionScreen ? ((OptionScreen) screen).getOriginalScreen() : screen;
+    }
+
+    @Override
+    public void init()
+    {
+        super.init();
+
+        int buttonWidth = BUTTON_WIDTH * buttons.size() + PADDING * (buttons.size() - 1);
+        int innerWidth = this.innerWidth = Math.max( 256, buttonWidth + PADDING * 2 );
+
+        messageRenderer = IBidiRenderer.create( font, message, innerWidth - PADDING * 2 );
+
+        int textHeight = messageRenderer.getLineCount() * FONT_HEIGHT + PADDING * 2;
+        innerHeight = textHeight + (buttons.isEmpty() ? 0 : buttons.get( 0 ).getHeight()) + PADDING;
+
+        x = (width - innerWidth) / 2;
+        y = (height - innerHeight) / 2;
+
+        int x = (width - buttonWidth) / 2;
+        for( Widget button : buttons )
+        {
+            button.x = x;
+            button.y = y + textHeight;
+            addButton( button );
+
+            x += BUTTON_WIDTH + PADDING;
+        }
+    }
+
+    @Override
+    public void render( @Nonnull MatrixStack transform, int mouseX, int mouseY, float partialTicks )
+    {
+        renderBackground( transform );
+
+        // Render the actual texture.
+        minecraft.textureManager.bind( BACKGROUND );
+        blit( transform, x, y, 0, 0, innerWidth, PADDING );
+        blit( transform,
+            x, y + PADDING, 0, PADDING, innerWidth, innerHeight - PADDING * 2,
+            innerWidth, PADDING
+        );
+        blit( transform, x, y + innerHeight - PADDING, 0, 256 - PADDING, innerWidth, PADDING );
+
+        messageRenderer.renderLeftAlignedNoShadow( transform, x + PADDING, y + PADDING, FONT_HEIGHT, 0x404040 );
+        super.render( transform, mouseX, mouseY, partialTicks );
+    }
+
+    @Override
+    public void onClose()
+    {
+        exit.run();
+    }
+
+    public static Widget newButton( ITextComponent component, Button.IPressable clicked )
+    {
+        return new Button( 0, 0, BUTTON_WIDTH, BUTTON_HEIGHT, component, clicked );
+    }
+
+    public void disable()
+    {
+        for( Widget widget : buttons ) widget.active = false;
+    }
+
+    @Nonnull
+    public Screen getOriginalScreen()
+    {
+        return originalScreen;
+    }
+}

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

@@ -5,14 +5,15 @@
  */
 package dan200.computercraft.client.gui.widgets;
 
+import com.mojang.blaze3d.matrix.MatrixStack;
 import dan200.computercraft.ComputerCraft;
 import dan200.computercraft.client.render.ComputerBorderRenderer;
 import dan200.computercraft.shared.computer.core.ClientComputer;
 import net.minecraft.client.gui.screen.Screen;
 import net.minecraft.client.gui.widget.Widget;
-import net.minecraft.client.resources.I18n;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.text.TextFormatting;
+import net.minecraft.util.text.TranslationTextComponent;
 
 import java.util.Arrays;
 import java.util.function.Consumer;
@@ -52,11 +53,11 @@ public final class ComputerSidebar
             screen, x, y, ICON_WIDTH, ICON_HEIGHT, () -> computer.isOn() ? 15 : 1, 1, ICON_TEX_Y_DIFF,
             TEXTURE, TEX_SIZE, TEX_SIZE, b -> toggleComputer( computer ),
             () -> computer.isOn() ? Arrays.asList(
-                I18n.get( "gui.computercraft.tooltip.turn_off" ),
-                TextFormatting.GRAY + I18n.get( "gui.computercraft.tooltip.turn_off.key" )
+                new TranslationTextComponent( "gui.computercraft.tooltip.turn_off" ),
+                new TranslationTextComponent( "gui.computercraft.tooltip.turn_off.key" ).withStyle( TextFormatting.GRAY )
             ) : Arrays.asList(
-                I18n.get( "gui.computercraft.tooltip.turn_on" ),
-                TextFormatting.GRAY + I18n.get( "gui.computercraft.tooltip.turn_off.key" )
+                new TranslationTextComponent( "gui.computercraft.tooltip.turn_on" ),
+                new TranslationTextComponent( "gui.computercraft.tooltip.turn_off.key" ).withStyle( TextFormatting.GRAY )
             )
         ) );
 
@@ -66,26 +67,26 @@ public final class ComputerSidebar
             screen, x, y, ICON_WIDTH, ICON_HEIGHT, 29, 1, ICON_TEX_Y_DIFF,
             TEXTURE, TEX_SIZE, TEX_SIZE, b -> computer.queueEvent( "terminate" ),
             Arrays.asList(
-                I18n.get( "gui.computercraft.tooltip.terminate" ),
-                TextFormatting.GRAY + I18n.get( "gui.computercraft.tooltip.terminate.key" )
+                new TranslationTextComponent( "gui.computercraft.tooltip.terminate" ),
+                new TranslationTextComponent( "gui.computercraft.tooltip.terminate.key" ).withStyle( TextFormatting.GRAY )
             )
         ) );
     }
 
-    public static void renderBackground( int x, int y )
+    public static void renderBackground( MatrixStack transform, int x, int y )
     {
-        Screen.blit(
+        Screen.blit( transform,
             x, y, 0, 102, WIDTH, FULL_BORDER,
             ComputerBorderRenderer.TEX_SIZE, ComputerBorderRenderer.TEX_SIZE
         );
 
-        Screen.blit(
+        Screen.blit( transform,
             x, y + FULL_BORDER, WIDTH, HEIGHT - FULL_BORDER * 2,
             0, 107, WIDTH, 4,
             ComputerBorderRenderer.TEX_SIZE, ComputerBorderRenderer.TEX_SIZE
         );
 
-        Screen.blit(
+        Screen.blit( transform,
             x, y + HEIGHT - FULL_BORDER, 0, 111, WIDTH, FULL_BORDER,
             ComputerBorderRenderer.TEX_SIZE, ComputerBorderRenderer.TEX_SIZE
         );

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

@@ -5,11 +5,14 @@
  */
 package dan200.computercraft.client.gui.widgets;
 
+import com.mojang.blaze3d.matrix.MatrixStack;
 import com.mojang.blaze3d.systems.RenderSystem;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.screen.Screen;
 import net.minecraft.client.gui.widget.button.Button;
 import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.text.ITextComponent;
+import net.minecraft.util.text.StringTextComponent;
 import net.minecraftforge.common.util.NonNullSupplier;
 
 import javax.annotation.Nonnull;
@@ -29,12 +32,12 @@ public class DynamicImageButton extends Button
     private final int yDiffTex;
     private final int textureWidth;
     private final int textureHeight;
-    private final NonNullSupplier<List<String>> tooltip;
+    private final NonNullSupplier<List<ITextComponent>> tooltip;
 
     public DynamicImageButton(
         Screen screen, int x, int y, int width, int height, int xTexStart, int yTexStart, int yDiffTex,
         ResourceLocation texture, int textureWidth, int textureHeight,
-        IPressable onPress, List<String> tooltip
+        IPressable onPress, List<ITextComponent> tooltip
     )
     {
         this(
@@ -48,10 +51,10 @@ public class DynamicImageButton extends Button
     public DynamicImageButton(
         Screen screen, int x, int y, int width, int height, IntSupplier xTexStart, int yTexStart, int yDiffTex,
         ResourceLocation texture, int textureWidth, int textureHeight,
-        IPressable onPress, NonNullSupplier<List<String>> tooltip
+        IPressable onPress, NonNullSupplier<List<ITextComponent>> tooltip
     )
     {
-        super( x, y, width, height, "", onPress );
+        super( x, y, width, height, StringTextComponent.EMPTY, onPress );
         this.screen = screen;
         this.textureWidth = textureWidth;
         this.textureHeight = textureHeight;
@@ -63,7 +66,7 @@ public class DynamicImageButton extends Button
     }
 
     @Override
-    public void renderButton( int mouseX, int mouseY, float partialTicks )
+    public void renderButton( @Nonnull MatrixStack stack, int mouseX, int mouseY, float partialTicks )
     {
         Minecraft minecraft = Minecraft.getInstance();
         minecraft.getTextureManager().bind( texture );
@@ -72,22 +75,27 @@ public class DynamicImageButton extends Button
         int yTex = yTexStart;
         if( isHovered() ) yTex += yDiffTex;
 
-        blit( x, y, xTexStart.getAsInt(), yTex, width, height, textureWidth, textureHeight );
+        blit( stack, x, y, xTexStart.getAsInt(), yTex, width, height, textureWidth, textureHeight );
         RenderSystem.enableDepthTest();
+
+        if( isHovered() ) renderToolTip( stack, mouseX, mouseY );
     }
 
     @Nonnull
     @Override
-    public String getMessage()
+    public ITextComponent getMessage()
     {
-        List<String> tooltip = this.tooltip.get();
-        return tooltip.isEmpty() ? "" : tooltip.get( 0 );
+        List<ITextComponent> tooltip = this.tooltip.get();
+        return tooltip.isEmpty() ? StringTextComponent.EMPTY : tooltip.get( 0 );
     }
 
     @Override
-    public void renderToolTip( int mouseX, int mouseY )
+    public void renderToolTip( @Nonnull MatrixStack stack, int mouseX, int mouseY )
     {
-        List<String> tooltip = this.tooltip.get();
-        if( !tooltip.isEmpty() ) screen.renderTooltip( tooltip, mouseX, mouseY );
+        List<ITextComponent> tooltip = this.tooltip.get();
+        if( !tooltip.isEmpty() )
+        {
+            screen.renderWrappedToolTip( stack, tooltip, mouseX, mouseY, screen.getMinecraft().font );
+        }
     }
 }