Initial commit

.editorconfig

@@ -0,0 +1,29 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+tab_width = 4
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.gradle.kts]
+indent_style = tab
+
+[*.java]
+indent_style = tab
+
+[*.json]
+indent_style = space
+indent_size = 2
+
+[fabric.mod.json]
+indent_style = tab
+tab_width = 2
+
+[*.properties]
+indent_style = space
+indent_size = 2

.gitattributes

@@ -0,0 +1,5 @@
+* text=auto eol=lf
+gradlew text eol=lf
+*.bat text eol=crlf
+*.cmd text eol=crlf
+gradle-wrapper.jar -text -diff -merge -filter

.gitea/workflows/build.yml

@@ -0,0 +1,38 @@
+name: build
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: checkout repository
+        uses: actions/checkout@v6
+
+      - name: cache gradle
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            gradle-${{ runner.os }}-
+
+      - name: setup jdk
+        uses: actions/setup-java@v5
+        with:
+          java-version: 21
+          distribution: temurin
+
+      - name: make gradle wrapper executable
+        run: chmod +x ./gradlew
+
+      - name: build
+        run: ./gradlew build --no-daemon -x test
+
+      - name: upload artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: artifacts
+          path: build/libs/

.gitignore

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+.gradle/
+.idea/
+.vscode/
+bin/
+build/
+out/
+run/
+run-server/

LICENSE

@@ -0,0 +1,121 @@
+Creative Commons Legal Code
+
+CC0 1.0 Universal
+
+    CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE
+    LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN
+    ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS
+    INFORMATION ON AN "AS-IS" BASIS. CREATIVE COMMONS MAKES NO WARRANTIES
+    REGARDING THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS
+    PROVIDED HEREUNDER, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM
+    THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED
+    HEREUNDER.
+
+Statement of Purpose
+
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+vii. other similar, equivalent or corresponding rights throughout the
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+
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+partial invalidity or ineffectiveness shall not invalidate the remainder
+of the License, and in such case Affirmer hereby affirms that he or she
+will not (i) exercise any of his or her remaining Copyright and Related
+Rights in the Work or (ii) assert any associated claims and causes of
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+express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+
+ a. No trademark or patent rights held by Affirmer are waived, abandoned,
+    surrendered, licensed or otherwise affected by this document.
+ b. Affirmer offers the Work as-is and makes no representations or
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+ d. Affirmer understands and acknowledges that Creative Commons is not a
+    party to this document and has no duty or obligation with respect to
+    this CC0 or use of the Work.

README.md

@@ -0,0 +1,39 @@
+# Example Mod
+
+Template for making Babric mods for BTA!
+
+**Note: *DO NOT fork this repository unless you want to contribute!***
+
+## Prerequisites
+- JDK for Java 21 ([Eclipse Temurin](https://adoptium.net/temurin/releases/) recommended)
+- [Intellij IDEA](https://www.jetbrains.com/idea/download/) (Scroll down for the free community edition, if using linux **DO NOT** use the flatpak distribution)
+- Minecraft Development plugin (Optional, but highly recommended)
+
+## Setup instructions
+   
+
+1. Click the `Use this template` button on this repo's page above (Will only appear if logged in). Choose `Create a new repository`, you will be redirected to a new page. Enter your repo's name and description, and hit `Create repository`.  
+   To get your project, open IntelliJ IDEA and click `Clone Repository` (`Get from VCS` on older versions). Select `Repository URL` and enter your repo's url
+
+2. After the project has finished importing, close it and open it again.  
+   If that does not work, open the right sidebar with `Gradle` on it, open `Tasks` > `fabric` and run `ideaSyncTask`.
+
+3. Create a new run configuration by going in `Run > Edit Configurations`.  
+   Then click on the plus icon and select Gradle. In the `Tasks and Arguments` field enter `build`.  
+   Running it will build your finished jar files and put them in `build/libs/`.
+
+4. Lastly, open `File` > `Settings` and head to `Build, Execution, Development` > `Build Tools` > `Gradle`.  
+   Make sure `Build and run using` and `Run tests using` is set to `Gradle`.
+
+5. Done! Now, all that's left is to change every mention of `loon` and `ciomek` to your own mod id and mod group, respectively. Happy modding!
+
+## Tips
+
+1. If you haven't already you should join the BTA modding discord! https://discord.gg/FTUNJhswBT
+2. You can set your username when launching the client run configuration by setting `--username <username>` in your program arguments.
+3. When launching the server run configuration you may want to remove the `nogui` program argument in order to see the regular server GUI.
+4. In Intellij you can double press shift or press ctrl+N to search class files, change the search from the default `Project Files` to `All Places` you can easily explore the classes for your dependencies and even BTA itself.
+5. In Intellij if ctrl+left-click on a field or method you can quickly get information on when and where that field or method is assign or used.
+6. Ensure IntelliJ is updated to the latest version. This is important because this template uses the latest Gradle version and if your IntelliJ installation is outdated, it may not support the latest version.
+7. In the `loon.mixins.json` you'll see `"compatibilityLevel": "JAVA_${java}",` along with an error message from the `Minecraft Development` plugin stating `Cannot resolve compatibility level 'JAVA_${java}'`. You can safely ignore this. The Gradle build system has been set up to grab the Java version from your `gradle.properties` and replace `${java}` with it. So the compiled binary will properly have it as `JAVA_8`.
+

build.gradle.kts

@@ -0,0 +1,166 @@
+plugins {
+	alias(libs.plugins.loom)
+    java
+}
+
+val lwjglNatives = resolveLwjglNatives()
+
+val modVersion = "${providers.gradleProperty("mod_version").get()}+${libs.versions.bta.get()}"
+val modGroup: Provider<String> = providers.gradleProperty("mod_group")
+val modName: Provider<String> = providers.gradleProperty("mod_name")
+
+val javaVersion: Provider<Int> = libs.versions.java.map { it.toInt() }
+
+base.archivesName = modName
+group = modGroup.get()
+version = modVersion
+loom {
+	val btaChannel = libs.versions.btaChannel.get()
+	val btaVersion = (if (btaChannel == "nightly") "" else "v") + libs.versions.bta.get()
+    customMinecraftMetadata.set("https://downloads.betterthanadventure.net/bta-client/${btaChannel}/$btaVersion/manifest.json")
+}
+repositories {
+    mavenCentral()
+    maven("https://maven.fabricmc.net/") { name = "Fabric" }
+    maven("https://maven.thesignalumproject.net/infrastructure") { name = "SignalumMavenInfrastructure" }
+    maven("https://maven.thesignalumproject.net/releases") { name = "SignalumMavenReleases" }
+	maven("https://maven.thesignalumproject.net/nightly") { name = "SignalumMavenNightly" }
+    ivy("https://piston-data.mojang.com") {
+        patternLayout { artifact("v1/[organisation]/[revision]/[module].jar") }
+        metadataSources { artifact() }
+    }
+}
+dependencies {
+    minecraft("::${libs.versions.bta.get()}")
+
+	// Required at compilation & runtime
+	// included in builds as a runtime dependency
+	implementation(libs.loader)
+	implementation(libs.halplibe) // If you do not need halplibe you can delete this line
+
+	// Only required at compilation
+	// provides documentation, can be removed if that isn't needed
+	compileOnly(libs.bundles.btaLwjgl)
+	compileOnly(libs.joml)
+	compileOnly(libs.joml.primitives)
+	compileOnly(libs.slf4jApi)
+
+	// Only required for development/launch at runtime, won't be part of any builds
+	localRuntime(libs.modMenu) // Optional, can be removed
+	runtimeClasspath(libs.clientJar)
+	val lwjglVer = libs.versions.lwjgl.get()
+	localRuntime(platform("org.lwjgl:lwjgl-bom:${lwjglVer}"))
+	localRuntime("org.lwjgl:lwjgl::$lwjglNatives")
+	localRuntime("org.lwjgl:lwjgl-glfw::$lwjglNatives")
+	localRuntime("org.lwjgl:lwjgl-openal::$lwjglNatives")
+	localRuntime("org.lwjgl:lwjgl-opengl::$lwjglNatives")
+	localRuntime("org.lwjgl:lwjgl-stb::$lwjglNatives")
+
+	// MQTT
+	implementation("org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.2.5")
+
+	// JSON
+	implementation("com.fasterxml.jackson.core:jackson-databind:2.20.0")
+}
+java {
+	toolchain {
+		languageVersion = javaVersion.map { JavaLanguageVersion.of(it) }
+		vendor = JvmVendorSpec.ADOPTIUM
+	}
+	sourceCompatibility = JavaVersion.toVersion(javaVersion.get())
+	targetCompatibility = JavaVersion.toVersion(javaVersion.get())
+	withSourcesJar()
+}
+val licenseFile = run {
+	val rootLicense = layout.projectDirectory.file("LICENSE")
+	val parentLicense = layout.projectDirectory.file("../LICENSE")
+	when {
+		rootLicense.asFile.exists() -> {
+			logger.lifecycle("Using LICENSE from project root: {}", rootLicense.asFile)
+			rootLicense
+		}
+		parentLicense.asFile.exists() -> {
+			logger.lifecycle("Using LICENSE from parent directory: {}", parentLicense.asFile)
+			parentLicense
+		}
+		else -> {
+			logger.warn("No LICENSE file found in project or parent directory.")
+			null
+		}
+	}
+}
+tasks {
+	withType<JavaCompile>().configureEach {
+		options.encoding = "UTF-8"
+		sourceCompatibility = javaVersion.get().toString()
+		targetCompatibility = javaVersion.get().toString()
+		if (javaVersion.get() > 8) options.release = javaVersion
+	}
+	named<UpdateDaemonJvm>("updateDaemonJvm") {
+		languageVersion = libs.versions.gradleJava.map { JavaLanguageVersion.of(it.toInt()) }
+		vendor = JvmVendorSpec.ADOPTIUM
+	}
+	withType<JavaExec>().configureEach { defaultCharacterEncoding = "UTF-8" }
+	withType<Javadoc>().configureEach { options.encoding = "UTF-8" }
+	withType<Test>().configureEach { defaultCharacterEncoding = "UTF-8" }
+	withType<Jar>().configureEach {
+		licenseFile?.let {
+			from(it) {
+				rename { original -> "${original}_${archiveBaseName.get()}" }
+			}
+		}
+	}
+	processResources {
+		val resourceMap = mapOf(
+			"version" to modVersion,
+			"fabricloader" to libs.versions.loader.get(),
+			"halplibe" to libs.versions.halplibe.get(),
+			"java" to libs.versions.java.get(),
+			"modmenu" to libs.versions.modMenu.get()
+		)
+		// This is needed for gradle to recognize changes
+		// made to expanded files
+		inputs.properties(resourceMap)
+
+		duplicatesStrategy = DuplicatesStrategy.INCLUDE
+		with(copySpec {
+			from("src/main/resources/") {
+				include("fabric.mod.json")
+				include("*.mixins.json")
+				expand(resourceMap)
+			}
+		})
+	}
+}
+// Removes all outdated manifest.json dependencies
+configurations.configureEach {
+	exclude(group = "org.lwjgl.lwjgl")
+	exclude(group = "net.java.jutils")
+	exclude(group = "net.java.jinput")
+	exclude(group = "net.sf.jopt-simple")
+	exclude(group = "net.minecraft", module = "launchwrapper")
+}
+
+fun resolveLwjglNatives(): String { // Sourced from https://www.lwjgl.org/
+	return Pair(
+		System.getProperty("os.name")!!,
+		System.getProperty("os.arch")!!
+	).let { (name, arch) ->
+		when {
+			arrayOf("Linux", "SunOS", "Unit").any { name.startsWith(it) } ->
+				if (arrayOf("arm", "aarch64").any { arch.startsWith(it) })
+					"natives-linux${if (arch.contains("64") || arch.startsWith("armv8")) "-arm64" else "-arm32"}"
+				else
+					"natives-linux"
+			arrayOf("Mac OS X", "Darwin").any { name.startsWith(it) } ->
+				"natives-macos${if (arch.startsWith("aarch64")) "-arm64" else ""}"
+			arrayOf("Windows").any { name.startsWith(it) } ->
+				if (arch.contains("64"))
+					"natives-windows${if (arch.startsWith("aarch64")) "-arm64" else ""}"
+				else
+					"natives-windows-x86"
+			else ->
+				throw Error("Unrecognized or unsupported platform. Please set \"lwjglNatives\" manually")
+		}
+	}
+}

gradle.properties

@@ -0,0 +1,18 @@
+##########################################################################
+# Standard Properties
+org.gradle.jvmargs = -Xmx2G
+org.gradle.warning.mode = all
+# This currently has to be set to false because the "Minecraft Client" and "Minecraft Server" configurations generated
+# by IntelliJ aren't currently compatible with the configuration cache. If you use the runClient and runServer Gradle
+# tasks instead, then this can (and should) be set to true.
+org.gradle.configuration-cache = false
+##########################################################################
+# Mod Properties
+mod_version = 1.0.0
+mod_group = ciomek
+mod_name = loon
+##########################################################################
+# Plugin Dependency
+# Check this on https://plugins.gradle.org/plugin/org.gradle.toolchains.foojay-resolver-convention/
+foojay_resolver_version = 1.0.0
+##########################################################################

gradle/gradle-daemon-jvm.properties

@@ -0,0 +1,13 @@
+#This file is generated by updateDaemonJvm
+toolchainUrl.FREE_BSD.AARCH64=https\://api.foojay.io/disco/v3.0/ids/df211d3c3eefdc408b462041881bc575/redirect
+toolchainUrl.FREE_BSD.X86_64=https\://api.foojay.io/disco/v3.0/ids/b41931cf1e70bc8e08d7dd19c343ef00/redirect
+toolchainUrl.LINUX.AARCH64=https\://api.foojay.io/disco/v3.0/ids/df211d3c3eefdc408b462041881bc575/redirect
+toolchainUrl.LINUX.X86_64=https\://api.foojay.io/disco/v3.0/ids/b41931cf1e70bc8e08d7dd19c343ef00/redirect
+toolchainUrl.MAC_OS.AARCH64=https\://api.foojay.io/disco/v3.0/ids/46949723aaa20c7b64d7ecfed7207034/redirect
+toolchainUrl.MAC_OS.X86_64=https\://api.foojay.io/disco/v3.0/ids/d6690dfd71c4c91e08577437b5b2beb0/redirect
+toolchainUrl.UNIX.AARCH64=https\://api.foojay.io/disco/v3.0/ids/df211d3c3eefdc408b462041881bc575/redirect
+toolchainUrl.UNIX.X86_64=https\://api.foojay.io/disco/v3.0/ids/b41931cf1e70bc8e08d7dd19c343ef00/redirect
+toolchainUrl.WINDOWS.AARCH64=https\://api.foojay.io/disco/v3.0/ids/3cd7045fca9a72cd9bc7d14a385e594c/redirect
+toolchainUrl.WINDOWS.X86_64=https\://api.foojay.io/disco/v3.0/ids/552c7bffe0370c66410a51c55985b511/redirect
+toolchainVendor=ADOPTIUM
+toolchainVersion=21

gradle/libs.versions.toml

@@ -0,0 +1,57 @@
+[versions]
+##########################################################################
+# Plugins
+# Check this on https://github.com/FabricMC/fabric-loom/releases/latest/
+loom = "1.15-SNAPSHOT"
+##########################################################################
+# Java Configuration
+# The Java version the JDK will be for compiling and running code.
+java = "17"
+# The Java version the JDK will be for running Gradle.
+gradleJava = "21"
+##########################################################################EEE
+# Mod Dependencies
+# Check this on https://downloads.betterthanadventure.net/bta-client/
+bta = "8.0.1"
+# Options are release, prerelease, nightly, and misc.
+btaChannel = "release"
+# Check this on https://maven.thesignalumproject.net/#/infrastructure/net/fabricmc/fabric-loader/
+loader = "0.18.4-bta.11"
+# Check this on https://github.com/Turnip-Labs/ModMenu/releases/latest/
+modMenu = "5.0.2"
+# Check this on https://github.com/Turnip-Labs/bta-halplibe/releases/latest/
+halplibe = "6.1.3+8.0"
+# Check this on https://github.com/Better-than-Adventure/legacy-lwjgl3/releases/latest/
+legacyLwjgl = "1.0.6"
+##########################################################################
+# Dependencies
+# Check this on https://central.sonatype.com/artifact/org.slf4j/slf4j-api/
+slf4jApi = "2.0.17"
+# This should match the version used by the current BTA release.
+lwjgl = "3.3.3"
+
+joml = "1.10.8" # Note: BTA uses 1.10.7, patch 8 removes the kotlin stdlib dependency
+jomlPrimitivess = "1.10.0"
+##########################################################################
+
+[libraries]
+loader = { group = "net.fabricmc", name = "fabric-loader", version.ref = "loader" }
+halplibe = { group = "turniplabs", name = "halplibe", version.ref = "halplibe" }
+modMenu = { group = "turniplabs", name = "modmenu-bta", version.ref = "modMenu" }
+legacyLwjgl = { group = "com.github.Better-than-Adventure", name = "legacy-lwjgl3", version.ref = "legacyLwjgl" }
+slf4jApi = { group = "org.slf4j", name = "slf4j-api", version.ref = "slf4jApi" }
+# https://piston-data.mojang.com/v1/objects/43db9b498cb67058d2e12d394e6507722e71bb45/client.jar
+clientJar = { group = "objects", name = "client", version = "43db9b498cb67058d2e12d394e6507722e71bb45" }
+joml = { group = "org.joml", name = "joml", version.ref = "joml" }
+joml-primitives = { group = "org.joml", name = "joml-primitives", version.ref = "jomlPrimitivess" }
+lwjgl = { group = "org.lwjgl", name = "lwjgl", version.ref = "lwjgl"}
+lwjgl-glfw = { group = "org.lwjgl", name = "lwjgl-glfw", version.ref = "lwjgl"}
+lwjgl-openal = { group = "org.lwjgl", name = "lwjgl-openal", version.ref = "lwjgl"}
+lwjgl-opengl = { group = "org.lwjgl", name = "lwjgl-opengl", version.ref = "lwjgl"}
+lwjgl-stb = { group = "org.lwjgl", name = "lwjgl-stb", version.ref = "lwjgl"}
+
+[bundles]
+btaLwjgl = [ "lwjgl", "lwjgl-glfw", "lwjgl-openal", "lwjgl-opengl", "lwjgl-stb", "legacyLwjgl" ]
+
+[plugins]
+loom = { id = "net.fabricmc.fabric-loom", version.ref = "loom" }

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,8 @@
+# Check this on https://gradle.org/releases/
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.1-all.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,248 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,93 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle.kts

@@ -0,0 +1,59 @@
+val modName: Provider<String> = providers.gradleProperty("mod_name")
+rootProject.name = modName.get()
+pluginManagement {
+	fun isRepoHealthy(url: String): Boolean {
+		var connection: javax.net.ssl.HttpsURLConnection? = null
+		return try {
+			connection = java.net.URI(url).toURL().openConnection() as javax.net.ssl.HttpsURLConnection
+			connection.requestMethod = "HEAD"
+			connection.connectTimeout = 2000
+			connection.readTimeout = 2000
+			connection.instanceFollowRedirects = true
+			connection.connect()
+			val code = connection.responseCode
+			code in 200..399
+		} catch (_: Exception) {
+			false
+		} finally {
+			connection?.disconnect()
+		}
+	}
+	fun repoUrlWithFallbacks(candidates: List<String>): String {
+		if (candidates.isEmpty()) {
+			val badLink = "https://mock.httpstatus.io/500"
+			logger.error("No repositories have been provided. Defaulting to: {}", badLink)
+			return badLink
+		}
+		val chosenRepository = candidates.firstOrNull { isRepoHealthy(it) } ?: run {
+			if (candidates.size == 1) {
+				logger.error("\"{}\" could not be resolved.", candidates.first())
+			} else {
+				logger.error("All {} repositories could not be resolved. Defaulting to: {}", candidates.size, candidates.first())
+			}
+			return candidates.first()
+		}
+		logger.lifecycle("Using \"{}\" as the Fabric repository.", chosenRepository)
+		return chosenRepository
+	}
+	repositories {
+		maven(
+			repoUrlWithFallbacks(
+				listOf(
+					"https://maven.fabricmc.net",
+					"https://maven2.fabricmc.net",
+					"https://maven3.fabricmc.net"
+				)
+			)
+		) { name = "Fabric" }
+		maven("https://maven.thesignalumproject.net/infrastructure") { name = "SignalumMavenInfrastructure" }
+		mavenCentral()
+		gradlePluginPortal()
+	}
+	val foojayResolverVersion = providers.gradleProperty("foojay_resolver_version")
+	plugins {
+		id("org.gradle.toolchains.foojay-resolver-convention").version(foojayResolverVersion.get())
+	}
+}
+plugins {
+	id("org.gradle.toolchains.foojay-resolver-convention")
+}

src/main/java/ciomek/loon/Loon.java

@@ -0,0 +1,39 @@
+package ciomek.loon;
+
+import ciomek.loon.commands.ChangePasswordCommand;
+import ciomek.loon.commands.RegisterCommand;
+import ciomek.loon.mqtt.MQTTClient;
+import net.fabricmc.api.ModInitializer;
+import net.minecraft.core.net.command.CommandManager;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import turniplabs.halplibe.HalpLibe;
+import turniplabs.halplibe.event.defs.CommonEvents;
+import turniplabs.halplibe.util.dependency.Key;
+
+public class Loon implements ModInitializer {
+	public static final String MOD_ID = HalpLibe.registerMod("loon", true);
+	public static final Logger LOGGER = LoggerFactory.getLogger(MOD_ID);
+	public static final String EnvVarPrefix = "LOON__";
+
+	@Override
+	public void onInitialize() {
+		CommonEvents.BEFORE_GAME_START.listen(Key.of(MOD_ID), this::beforeGameStart);
+		CommonEvents.AFTER_GAME_START.listen(Key.of(MOD_ID), this::afterGameStart);
+		LOGGER.info("Loon initialized.");
+
+
+		CommandManager.registerCommand(new RegisterCommand());
+		CommandManager.registerCommand(new ChangePasswordCommand());
+
+		MQTTClient.getInstance();
+	}
+
+	public void beforeGameStart() {
+
+	}
+
+	public void afterGameStart() {
+
+	}
+}

src/main/java/ciomek/loon/TPSTracker.java

@@ -0,0 +1,18 @@
+package ciomek.loon;
+
+import org.spongepowered.asm.mixin.Unique;
+
+public class TPSTracker {
+	@Unique
+	private static volatile double tps = 0;
+
+	public static double getTPS()
+	{
+		return tps;
+	}
+
+	public static void setTPS(double tps)
+	{
+		TPSTracker.tps = tps;
+	}
+}

src/main/java/ciomek/loon/commands/ChangePasswordCommand.java

@@ -0,0 +1,72 @@
+package ciomek.loon.commands;
+
+import ciomek.loon.mqtt.MQTTClient;
+import ciomek.loon.mqtt.payload.ChangePasswordPayload;
+import ciomek.loon.mqtt.payload.RegisterResponse;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.mojang.brigadier.CommandDispatcher;
+import com.mojang.brigadier.arguments.ArgumentTypeString;
+import com.mojang.brigadier.builder.ArgumentBuilderLiteral;
+import com.mojang.brigadier.builder.ArgumentBuilderRequired;
+import net.minecraft.core.entity.player.Player;
+import net.minecraft.core.net.command.CommandManager;
+import net.minecraft.core.net.command.CommandSource;
+
+import static com.mojang.brigadier.builder.ArgumentBuilderLiteral.literal;
+
+public class ChangePasswordCommand implements CommandManager.CommandRegistry {
+	@SuppressWarnings("unchecked")
+	@Override
+	public void register(CommandDispatcher<CommandSource> commandDispatcher) {
+		commandDispatcher
+			.register(
+				(ArgumentBuilderLiteral<CommandSource>) (Object) literal("change-password")
+					.then(
+						ArgumentBuilderRequired.argument("password", ArgumentTypeString.string())
+							.executes(context -> {
+								CommandSource source = (CommandSource) context.getSource();
+								Player player = source.getSender();
+
+								if (player == null) {
+									source.sendMessage("This command can only be run by a player!");
+									return 0;
+								}
+
+								String password = ArgumentTypeString.getString(context, "password");
+
+								ChangePasswordPayload payload = new ChangePasswordPayload(player.uuid.toString(), password);
+
+								MQTTClient.getInstance().publish(payload.topics().get(0), payload.toJson());
+
+								source.sendMessage("Sent request to the server! Waiting for the response. ");
+
+								MQTTClient.getInstance().subscribe("loon/register/+/response", (topic, message) -> {
+									String[] parts = topic.split("/");
+
+									String playerUuid = parts[2];
+
+									ObjectMapper objectMapper = new ObjectMapper();
+									RegisterResponse response = objectMapper.readValue(
+										message.getPayload(),
+										RegisterResponse.class
+									);
+
+									if (response == null)
+										return;
+
+									if (response.success())
+										source.sendMessage("Successfully changed your password!");
+									else
+									{
+										source.sendMessage("Failed to change your password!");
+										source.sendMessage("Here's what went wrong:");
+										source.sendMessage(response.error());
+									}
+								});
+
+								return 1;
+							})
+					)
+			);
+	}
+}

src/main/java/ciomek/loon/commands/RegisterCommand.java

@@ -0,0 +1,76 @@
+package ciomek.loon.commands;
+
+import ciomek.loon.mqtt.MQTTClient;
+import ciomek.loon.mqtt.payload.RegisterPayload;
+import ciomek.loon.mqtt.payload.RegisterResponse;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.mojang.brigadier.CommandDispatcher;
+import com.mojang.brigadier.arguments.ArgumentTypeString;
+import com.mojang.brigadier.builder.ArgumentBuilderLiteral;
+import com.mojang.brigadier.builder.ArgumentBuilderRequired;
+import net.minecraft.core.entity.player.Player;
+import net.minecraft.core.net.command.CommandManager;
+import net.minecraft.core.net.command.CommandSource;
+
+import static com.mojang.brigadier.builder.ArgumentBuilderLiteral.literal;
+
+public class RegisterCommand implements CommandManager.CommandRegistry {
+	@SuppressWarnings("unchecked")
+	@Override
+	public void register(CommandDispatcher<CommandSource> commandDispatcher) {
+		commandDispatcher
+			.register(
+				(ArgumentBuilderLiteral<CommandSource>) (Object) literal("register")
+					.then(
+						ArgumentBuilderRequired.argument("internalUsername", ArgumentTypeString.string())
+							.then(
+								ArgumentBuilderRequired.argument("password", ArgumentTypeString.string())
+									.executes(context -> {
+										CommandSource source = (CommandSource) context.getSource();
+										Player player = source.getSender();
+
+										if (player == null) {
+											source.sendMessage("This command can only be run by a player!");
+											return 0;
+										}
+
+										String internalUsername = ArgumentTypeString.getString(context, "internalUsername");
+										String password = ArgumentTypeString.getString(context, "password");
+
+										RegisterPayload payload = new RegisterPayload(player.uuid.toString(), password, internalUsername);
+
+										MQTTClient.getInstance().publish(payload.topics().get(0), payload.toJson());
+
+										source.sendMessage("Sent request to the server! Waiting for the response. ");
+
+										MQTTClient.getInstance().subscribe("loon/register/+/response", (topic, message) -> {
+											String[] parts = topic.split("/");
+
+											String playerUuid = parts[2];
+
+											ObjectMapper objectMapper = new ObjectMapper();
+											RegisterResponse response = objectMapper.readValue(
+												message.getPayload(),
+												RegisterResponse.class
+											);
+
+											if (response == null)
+												return;
+
+											if (response.success())
+												source.sendMessage("Successfully registered the user!");
+											else
+											{
+												source.sendMessage("Failed to register the user!");
+												source.sendMessage("Here's what went wrong:");
+												source.sendMessage(response.error());
+											}
+										});
+
+										return 1;
+									})
+							)
+					)
+			);
+	}
+}

src/main/java/ciomek/loon/mixin/ContainerInventoryMQTTMixin.java

@@ -0,0 +1,63 @@
+package ciomek.loon.mixin;
+
+import ciomek.loon.mqtt.payload.data.ItemStackData;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+import ciomek.loon.mqtt.payload.player.inventory.PlayerInventoryPayload;
+import net.minecraft.core.entity.player.Player;
+import net.minecraft.core.item.ItemStack;
+import net.minecraft.core.player.inventory.container.ContainerInventory;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import java.util.Arrays;
+
+@Mixin(value = ContainerInventory.class, remap = false)
+public class ContainerInventoryMQTTMixin {
+	@Shadow
+	public Player player;
+	@Shadow
+	public ItemStack[] mainInventory;
+
+	@Shadow
+	public @Nullable ItemStack @NotNull [] armorInventory;
+
+	@Unique
+	private void sendFullInventory() {
+		if (player == null) {
+			return;
+		}
+
+		new PlayerInventoryPayload(
+			new PlayerIdentity(player.uuid, player.username),
+			Arrays.stream(mainInventory).map(ItemStackData::from).toList(),
+			Arrays.stream(armorInventory).map(ItemStackData::from).toList()
+		).send();
+	}
+
+	@Inject(method = {
+		"setItem",
+		"insertItem",
+		"sort",
+		"dropAllItems",
+		"transferAllContents",
+		"load"
+	}, at = @At("RETURN"))
+	private void onInventoryChanged(CallbackInfo ci) {
+		sendFullInventory();
+	}
+
+	@Inject(method = {
+		"removeItem",
+		"consumeInventoryItem"
+	}, at = @At("RETURN"))
+	private void onInventoryChangedReturn(CallbackInfoReturnable<?> cir) {
+		sendFullInventory();
+	}
+}

src/main/java/ciomek/loon/mixin/EntityItemMQTTMixin.java

@@ -0,0 +1,43 @@
+package ciomek.loon.mixin;
+
+import ciomek.loon.mqtt.MQTTClient;
+import ciomek.loon.mqtt.payload.data.ItemStackData;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+import ciomek.loon.mqtt.payload.player.inventory.PlayerPickUpItemPayload;
+import net.minecraft.core.entity.EntityItem;
+import net.minecraft.core.entity.player.Player;
+import net.minecraft.core.item.ItemStack;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(value = EntityItem.class, remap = false)
+public class EntityItemMQTTMixin {
+	@Shadow
+	public ItemStack item;
+
+	@Unique
+	private int originalStackSize;
+
+	@Inject(method = "playerTouch", at = @At("HEAD"))
+	public void onPlayerTouchHead(Player player, CallbackInfo ci) {
+		originalStackSize = item != null ? item.stackSize : 0;
+	}
+
+	@Inject(method = "playerTouch", at = @At("TAIL"))
+	public void onPlayerTouch(Player player, CallbackInfo ci) {
+		if (item == null || item.stackSize >= originalStackSize) {
+			return;
+		}
+
+		PlayerPickUpItemPayload payload = new PlayerPickUpItemPayload(
+			new PlayerIdentity(player.uuid, player.username),
+			ItemStackData.from(item, originalStackSize - item.stackSize)
+		);
+
+		payload.send();
+	}
+}

src/main/java/ciomek/loon/mixin/PacketHandlerServerMQTTMixin.java

@@ -0,0 +1,62 @@
+package ciomek.loon.mixin;
+
+import ciomek.loon.mqtt.MQTTClient;
+import ciomek.loon.mqtt.payload.CommandPayload;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+import ciomek.loon.mqtt.payload.player.list.PlayerKickedPayload;
+import ciomek.loon.mqtt.payload.player.PlayerTeleportedPayload;
+import net.minecraft.server.entity.player.PlayerServer;
+import net.minecraft.server.net.handler.PacketHandlerServer;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(value = PacketHandlerServer.class, remap = false)
+public class PacketHandlerServerMQTTMixin {
+	@Shadow
+	private PlayerServer playerEntity;
+
+	@Inject(method = "handleSlashCommand", at = @At("TAIL"))
+	private void onSlashCommand(String command, CallbackInfo ci) {
+		CommandPayload payload = new CommandPayload(command, playerEntity.username);
+
+		payload.send();
+	}
+
+	@Inject(method = "kickPlayer", at = @At("HEAD"))
+	private void onKickPlayer(String reason, CallbackInfo ci) {
+		PlayerKickedPayload payload = new PlayerKickedPayload(
+			new PlayerIdentity(playerEntity.uuid, playerEntity.username),
+			reason
+		);
+
+		payload.send();
+	}
+
+	@Inject(method = "teleport(DDD)V", at = @At("HEAD"))
+	private void onTeleport(double x, double y, double z, CallbackInfo ci) {
+		publishTeleport(x, y, z, playerEntity.dimension);
+	}
+
+	@Inject(method = "teleportAndRotate", at = @At("HEAD"))
+	private void onTeleportAndRotate(double x, double y, double z, float yaw, float pitch, CallbackInfo ci) {
+		publishTeleport(x, y, z, playerEntity.dimension);
+	}
+
+	private void publishTeleport(double toX, double toY, double toZ, int dimension) {
+		PlayerTeleportedPayload payload = new PlayerTeleportedPayload(
+			new PlayerIdentity(playerEntity.uuid, playerEntity.username),
+			playerEntity.x,
+			playerEntity.y,
+			playerEntity.z,
+			toX,
+			toY,
+			toZ,
+			dimension
+		);
+
+		payload.send();
+	}
+}

src/main/java/ciomek/loon/mixin/PlayerListMQTTMixin.java

@@ -0,0 +1,29 @@
+package ciomek.loon.mixin;
+
+import ciomek.loon.mqtt.MQTTClient;
+import ciomek.loon.mqtt.payload.player.list.PlayerJoinedPayload;
+import ciomek.loon.mqtt.payload.player.list.PlayerLeftPayload;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+import net.minecraft.server.entity.player.PlayerServer;
+import net.minecraft.server.net.PlayerList;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(value = PlayerList.class, remap = false)
+public class PlayerListMQTTMixin {
+	@Inject(method = "playerLoggedIn", at = @At(value = "TAIL"))
+	public void onPayerLoggedIn(PlayerServer player, CallbackInfo ci) {
+		PlayerJoinedPayload payload = new PlayerJoinedPayload(new PlayerIdentity(player.uuid, player.username));
+
+		payload.send();
+	}
+
+	@Inject(method = "playerLoggedOut", at = @At(value = "TAIL"))
+	public void onPayerLoggedOut(PlayerServer entityplayermp, CallbackInfo ci) {
+		PlayerLeftPayload payload = new PlayerLeftPayload(new PlayerIdentity(entityplayermp.uuid, entityplayermp.username));
+
+		payload.send();
+	}
+}

src/main/java/ciomek/loon/mixin/PlayerMQTTMixin.java

@@ -0,0 +1,91 @@
+package ciomek.loon.mixin;
+
+import ciomek.loon.mqtt.payload.data.ItemStackData;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+import ciomek.loon.mqtt.payload.player.PlayerDiedPayload;
+import ciomek.loon.mqtt.payload.player.PlayerHurtPayload;
+import ciomek.loon.mqtt.payload.player.inventory.PlayerDropItemPayload;
+import ciomek.loon.mqtt.payload.player.inventory.PlayerInventoryPayload;
+import net.minecraft.core.entity.Entity;
+import net.minecraft.core.entity.player.Player;
+import net.minecraft.core.item.ItemStack;
+import net.minecraft.core.util.helper.DamageType;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import java.util.Arrays;
+
+@Mixin(value = Player.class, remap = false)
+public class PlayerMQTTMixin {
+	@Unique
+	DamageType lastDamageType = null;
+
+	@Inject(method = "hurt", at = @At(value = "HEAD"))
+	public void onHurtStart(Entity attacker, int damage, DamageType type, CallbackInfoReturnable<Boolean> cir) {
+		lastDamageType = type;
+	}
+
+	@Inject(method = "hurt", at = @At(value = "TAIL"))
+	public void onHurt(Entity attacker, int damage, DamageType type, CallbackInfoReturnable<Boolean> cir) {
+		Player player = (Player) (Object) this;
+
+		PlayerHurtPayload payload = new PlayerHurtPayload(new PlayerIdentity(player.uuid, player.username), damageTypeName(type));
+
+		payload.send();
+	}
+
+	@Inject(method = "onDeath", at = @At(value = "TAIL"))
+	public void onDeath(Entity entityKilledBy, CallbackInfo ci) {
+		Player player = (Player) (Object) this;
+
+		String killerName;
+		if (entityKilledBy instanceof Player killer) {
+			killerName = killer.username;
+		} else if (entityKilledBy != null) {
+			killerName = Entity.getNameFromEntity(entityKilledBy, true);
+		} else {
+			killerName = null;
+		}
+
+		String damageType = lastDamageType == null ? null : damageTypeName(lastDamageType);
+		PlayerDiedPayload payload = new PlayerDiedPayload(new PlayerIdentity(player.uuid, player.username), killerName, damageType);
+
+		payload.send();
+	}
+
+	@Inject(method = "dropItem", at = @At("TAIL"))
+	public void onDropItem(ItemStack stack, boolean randomDirection, CallbackInfo ci) {
+		if (stack == null) {
+			return;
+		}
+
+		Player player = (Player) (Object) this;
+		PlayerDropItemPayload payload = new PlayerDropItemPayload(
+			new PlayerIdentity(player.uuid, player.username),
+			ItemStackData.from(stack)
+		);
+
+		payload.send();
+	}
+
+	@Inject(method = "setItemInArmorSlot", at = @At("TAIL"))
+	private void onArmorChanged(CallbackInfo ci) {
+		Player player = (Player) (Object) this;
+
+		new PlayerInventoryPayload(
+			new PlayerIdentity(player.uuid, player.username),
+			Arrays.stream(player.inventory.mainInventory).map(ItemStackData::from).toList(),
+			Arrays.stream(player.inventory.armorInventory).map(ItemStackData::from).toList()
+		).send();
+	}
+
+	@Unique
+	private static String damageTypeName(DamageType type) {
+		String key = type.getLanguageKey();
+		return key.substring(key.lastIndexOf('.') + 1);
+	}
+}

src/main/java/ciomek/loon/mixin/WorldServerMixin.java

@@ -0,0 +1,97 @@
+package ciomek.loon.mixin;
+
+import ciomek.loon.TPSTracker;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+import ciomek.loon.mqtt.payload.data.PositionData;
+import ciomek.loon.mqtt.payload.player.PlayerPositionPayload;
+import ciomek.loon.mqtt.request.IRequest;
+import ciomek.loon.mqtt.request.RequestManager;
+import net.minecraft.core.world.Dimension;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.entity.player.PlayerServer;
+import net.minecraft.server.world.WorldServer;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+@Mixin(value = WorldServer.class, remap = false)
+public class WorldServerMixin {
+	@Unique
+	private static final int POSITION_CHECK_INTERVAL_TICKS = 20;
+
+	@Shadow
+	public MinecraftServer mcServer;
+
+	@Unique
+	private static final ExecutorService EXECUTOR = Executors.newCachedThreadPool();
+
+	@Unique
+	private static long lastTickNanos;
+
+	@Unique
+	private static long gapSumNanos;
+
+	@Unique
+	private static int gapTicks;
+
+	@Unique
+	private static int positionCheckTicks;
+
+	@Unique
+	private static final Map<UUID, PositionData> lastSentPositions = new HashMap<>();
+
+	@Inject(method = "tick", at = @At("TAIL"))
+	private void onTick(CallbackInfo ci) {
+		WorldServer self = (WorldServer) (Object) this;
+		if (self.dimension == Dimension.OVERWORLD) {
+			long now = System.nanoTime();
+			if (lastTickNanos != 0) {
+				gapSumNanos += now - lastTickNanos;
+				gapTicks++;
+				if (gapSumNanos >= 1_000_000_000L) {
+					TPSTracker.setTPS(Math.min(20.0, gapTicks / (gapSumNanos / 1e9)));
+					gapSumNanos = 0;
+					gapTicks = 0;
+				}
+			}
+			lastTickNanos = now;
+
+			if (++positionCheckTicks >= POSITION_CHECK_INTERVAL_TICKS) {
+				positionCheckTicks = 0;
+				broadcastMovedPlayerPositions();
+			}
+		}
+
+		IRequest request;
+		while ((request = RequestManager.pollRequest()) != null) {
+			IRequest current = request;
+			EXECUTOR.submit(() -> current.handle(mcServer));
+		}
+	}
+
+	@Unique
+	private void broadcastMovedPlayerPositions() {
+		for (PlayerServer player : mcServer.playerList.playerEntities) {
+			PositionData position = new PositionData(player.x, player.y, player.z);
+
+			if (!position.equals(lastSentPositions.put(player.uuid, position))) {
+				PlayerPositionPayload payload = new PlayerPositionPayload(
+					new PlayerIdentity(player.uuid, player.username),
+					position,
+					player.dimension
+				);
+
+				payload.send();
+			}
+		}
+	}
+}

src/main/java/ciomek/loon/mqtt/MQTTClient.java

@@ -0,0 +1,161 @@
+package ciomek.loon.mqtt;
+
+import ciomek.loon.Loon;
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+import ciomek.loon.mqtt.request.*;
+import org.eclipse.paho.client.mqttv3.*;
+
+import java.util.UUID;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class MQTTClient {
+	private static MQTTClient instance;
+	private MqttClient client;
+	private MQTTSettings settings;
+
+	public static synchronized MQTTClient getInstance() {
+		if(instance != null)
+			return instance;
+
+		MQTTClient mqttClient = MQTTClient.init();
+		instance = mqttClient;
+
+		return instance;
+	}
+
+	public void subscribe(String topicFilter, IMqttMessageListener messageListener) {
+		try {
+			client.subscribe(topicFilter, messageListener);
+		} catch (MqttException e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+	public void publish(String topic, String message, int qos) {
+		MqttMessage mqttMessage = new MqttMessage(message.getBytes());
+		mqttMessage.setQos(qos);
+
+		try {
+			client.publish(topic, mqttMessage);
+		} catch (MqttException e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+	public void publish(String topic, String message) {
+		publish(topic, message, 1);
+	}
+
+	public void publish(String topic, Payload payload) {
+		publish(topic, payload.toJson());
+	}
+
+
+	static MQTTClient init() {
+		MQTTClient client = new MQTTClient();
+		client.establish();
+
+		return client;
+	}
+
+	public void establish() {
+		settings = MQTTSettings.getFromEnvVars();
+
+		String broker = settings.broker();
+		String clientId = settings.clientId();
+		String username = settings.username();
+		String password = settings.password();
+
+		try {
+			client = new MqttClient(broker, clientId);
+			MqttConnectOptions options = new MqttConnectOptions();
+			options.setUserName(username);
+			options.setPassword(password.toCharArray());
+			options.setMaxInflight(10000);
+
+			client.setCallback(new MqttCallback() {
+				@Override
+				public void connectionLost(Throwable cause) {
+
+				}
+
+				@Override
+				public void messageArrived(String topic, MqttMessage message) {
+					if (topic.matches("loon/player/[^/]+/inventory/full/request")) {
+						Pattern pattern = Pattern.compile("loon/player/([^/]+)/inventory/full/request");
+						Matcher matcher = pattern.matcher(topic);
+
+						if (matcher.matches()) {
+							UUID playerId = UUID.fromString(matcher.group(1));
+
+							InventoryRequest inventoryRequest = new InventoryRequest(playerId);
+
+							RequestManager.addRequest(inventoryRequest);
+						}
+					}
+
+					if (topic.matches("loon/player/[^/]+/online/request")) {
+						Pattern pattern = Pattern.compile("loon/player/([^/]+)/online/request");
+						Matcher matcher = pattern.matcher(topic);
+
+						if (matcher.matches()) {
+							UUID playerId = UUID.fromString(matcher.group(1));
+
+							PlayerOnlineRequest playerOnlineRequest = new PlayerOnlineRequest(playerId);
+
+							RequestManager.addRequest(playerOnlineRequest);
+						}
+					}
+
+					if (topic.matches("loon/player/[^/]+/position/request")) {
+						Pattern pattern = Pattern.compile("loon/player/([^/]+)/position/request");
+						Matcher matcher = pattern.matcher(topic);
+
+						if (matcher.matches()) {
+							UUID playerId = UUID.fromString(matcher.group(1));
+
+							PlayerPositionRequest request = new PlayerPositionRequest(playerId);
+
+							RequestManager.addRequest(request);
+						}
+					}
+
+					Pattern pattern = Pattern.compile("loon/world/chunks/(-?\\d+):(-?\\d+)/(-?\\d+):(-?\\d+)/request");
+					Matcher matcher = pattern.matcher(topic);
+
+					if (matcher.matches())
+					{
+						int xStart = Integer.parseInt(matcher.group(1));
+						int xEnd = Integer.parseInt(matcher.group(2));
+						int zStart = Integer.parseInt(matcher.group(3));
+						int zEnd = Integer.parseInt(matcher.group(4));
+
+						ChunkMapRequest request = new ChunkMapRequest(xStart, xEnd, zStart, zEnd);
+
+						RequestManager.addRequest(request);
+					}
+
+					if (topic.equals("loon/server/info/request")) {
+						RequestManager.addRequest(new ServerInfoRequest());
+					}
+				}
+
+				@Override
+				public void deliveryComplete(IMqttDeliveryToken token) {
+
+				}
+			});
+
+			client.connect(options);
+			client.subscribe("loon/player/+/inventory/full/request");
+			client.subscribe("loon/player/+/online/request");
+			client.subscribe("loon/player/+/position/request");
+			client.subscribe("loon/world/chunks/+/+/request");
+			client.subscribe("loon/server/info/request");
+		} catch (MqttException e) {
+			throw new RuntimeException(e);
+		}
+	}
+}

src/main/java/ciomek/loon/mqtt/MQTTSettings.java

@@ -0,0 +1,30 @@
+package ciomek.loon.mqtt;
+
+import ciomek.loon.Loon;
+
+public record MQTTSettings (
+	String broker,
+	String username,
+	String password,
+	String clientId
+)
+{
+	public static MQTTSettings getFromEnvVars()
+	{
+		return new MQTTSettings(getEnvVar("broker"), getEnvVar("username"), getEnvVar("password"), getEnvVar("clientid"));
+	}
+
+	static String getEnvVar(String name)
+	{
+		String fullName = Loon.EnvVarPrefix + name.toUpperCase();
+
+		String value = System.getenv(fullName);
+
+		if  (value == null || value.isBlank())
+			throw new IllegalArgumentException(
+				"Missing environment variable: " + fullName + ". "
+			);
+
+		return value;
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/ChangePasswordPayload.java

@@ -0,0 +1,13 @@
+package ciomek.loon.mqtt.payload;
+
+import java.util.List;
+
+public record ChangePasswordPayload (
+	String uuid,
+	String password
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/register/change_password");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/CommandPayload.java

@@ -0,0 +1,13 @@
+package ciomek.loon.mqtt.payload;
+
+import java.util.List;
+
+public record CommandPayload(
+	String command,
+	String source
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/commands", "loon/all");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/Payload.java

@@ -0,0 +1,34 @@
+package ciomek.loon.mqtt.payload;
+
+import ciomek.loon.mqtt.MQTTClient;
+import com.fasterxml.jackson.annotation.JsonAutoDetect;
+import com.fasterxml.jackson.annotation.PropertyAccessor;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.util.List;
+
+public interface Payload {
+	ObjectMapper MAPPER = new ObjectMapper();
+
+	List<String> topics();
+
+	default String toJson() {
+		try {
+			MAPPER.setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY);
+			return MAPPER.writeValueAsString(this);
+		} catch (JsonProcessingException e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+	default void send()
+	{
+		topics().forEach(topic -> {
+			MQTTClient.getInstance().publish(
+				topic,
+				this
+			);
+		});
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/RegisterPayload.java

@@ -0,0 +1,14 @@
+package ciomek.loon.mqtt.payload;
+
+import java.util.List;
+
+public record RegisterPayload (
+	String uuid,
+	String password,
+	String internalUsername
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/register/request");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/RegisterResponse.java

@@ -0,0 +1,6 @@
+package ciomek.loon.mqtt.payload;
+
+public record RegisterResponse(
+	boolean success,
+	String error
+) {}

src/main/java/ciomek/loon/mqtt/payload/ServerInfoPayload.java

@@ -0,0 +1,22 @@
+package ciomek.loon.mqtt.payload;
+
+
+import java.util.List;
+
+public record ServerInfoPayload(
+	double tps,
+	String version,
+	String motd,
+	boolean onlineMode,
+	int sleepPercentage,
+	int currentPlayerCount,
+	int maxPlayerCount,
+	int difficulty,
+	boolean pvpOn,
+	int viewDistance
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/server/info");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/data/BlockData.java

@@ -0,0 +1,8 @@
+package ciomek.loon.mqtt.payload.data;
+
+public record BlockData(
+	String blockName,
+	int blockId,
+	int color
+) {
+}

src/main/java/ciomek/loon/mqtt/payload/data/ChunkData.java

@@ -0,0 +1,12 @@
+package ciomek.loon.mqtt.payload.data;
+
+import java.util.List;
+
+public record ChunkData (
+	List<List<BlockData>> map,
+	String biome,
+	int x,
+	int z,
+	boolean loaded
+) {
+}

src/main/java/ciomek/loon/mqtt/payload/data/ItemStackData.java

@@ -0,0 +1,25 @@
+package ciomek.loon.mqtt.payload.data;
+
+import net.minecraft.core.item.ItemStack;
+
+public record ItemStackData(
+	String itemName,
+	int itemID,
+	int itemCount
+	) {
+	public static ItemStackData from(ItemStack stack) {
+		if (stack == null) {
+			return null;
+		}
+
+		return from(stack, stack.stackSize);
+	}
+
+	public static ItemStackData from(ItemStack stack, int itemCount) {
+		if (stack == null) {
+			return null;
+		}
+
+		return new ItemStackData(stack.getDisplayName(), stack.itemID, itemCount);
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/data/PlayerIdentity.java

@@ -0,0 +1,9 @@
+package ciomek.loon.mqtt.payload.data;
+
+import java.util.UUID;
+
+public record PlayerIdentity
+(
+	UUID uuid,
+	String username
+) { }

src/main/java/ciomek/loon/mqtt/payload/data/PositionData.java

@@ -0,0 +1,7 @@
+package ciomek.loon.mqtt.payload.data;
+
+public record PositionData (
+	double x,
+	double y,
+	double z
+) {}

src/main/java/ciomek/loon/mqtt/payload/player/PlayerDiedPayload.java

@@ -0,0 +1,17 @@
+package ciomek.loon.mqtt.payload.player;
+
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+
+import java.util.List;
+
+public record PlayerDiedPayload(
+	PlayerIdentity player,
+	String killer,
+	String damageType
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/player/" + player.uuid() + "/died");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/player/PlayerHurtPayload.java

@@ -0,0 +1,16 @@
+package ciomek.loon.mqtt.payload.player;
+
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+
+import java.util.List;
+
+public record PlayerHurtPayload (
+	PlayerIdentity player,
+	String damageType
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/player/" + player.uuid() + "/hurt");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/player/PlayerOnlinePayload.java

@@ -0,0 +1,16 @@
+package ciomek.loon.mqtt.payload.player;
+
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+
+import java.util.List;
+
+public record PlayerOnlinePayload(
+	PlayerIdentity player,
+	boolean online
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/player/" + player.uuid() + "/online", "loon/player/" + player.uuid() + "/online/response");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/player/PlayerPositionPayload.java

@@ -0,0 +1,18 @@
+package ciomek.loon.mqtt.payload.player;
+
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+import ciomek.loon.mqtt.payload.data.PositionData;
+
+import java.util.List;
+
+public record PlayerPositionPayload(
+	PlayerIdentity player,
+	PositionData position,
+	Integer dimension
+	) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/player/" + player.uuid() + "/position", "loon/player/" + player.uuid() + "/position/response");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/player/PlayerTeleportedPayload.java

@@ -0,0 +1,22 @@
+package ciomek.loon.mqtt.payload.player;
+
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+
+import java.util.List;
+
+public record PlayerTeleportedPayload(
+	PlayerIdentity player,
+	double fromX,
+	double fromY,
+	double fromZ,
+	double toX,
+	double toY,
+	double toZ,
+	int dimension
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/player/" + player.uuid() + "/teleported");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/player/inventory/PlayerDropItemPayload.java

@@ -0,0 +1,17 @@
+package ciomek.loon.mqtt.payload.player.inventory;
+
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.ItemStackData;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+
+import java.util.List;
+
+public record PlayerDropItemPayload(
+	PlayerIdentity player,
+	ItemStackData itemStack
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/player/" + player.uuid() + "/inventory/dropped");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/player/inventory/PlayerInventoryPayload.java

@@ -0,0 +1,18 @@
+package ciomek.loon.mqtt.payload.player.inventory;
+
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.ItemStackData;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+
+import java.util.List;
+
+public record PlayerInventoryPayload(
+	PlayerIdentity player,
+	List<ItemStackData> grid,
+	List<ItemStackData> armor
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/player/" + player.uuid() + "/inventory/full/response");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/player/inventory/PlayerPickUpItemPayload.java

@@ -0,0 +1,17 @@
+package ciomek.loon.mqtt.payload.player.inventory;
+
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.ItemStackData;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+
+import java.util.List;
+
+public record PlayerPickUpItemPayload (
+	PlayerIdentity player,
+	ItemStackData itemStack
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/player/" + player.uuid() + "/inventory/picked_up");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/player/list/PlayerJoinedPayload.java

@@ -0,0 +1,15 @@
+package ciomek.loon.mqtt.payload.player.list;
+
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+
+import java.util.List;
+
+public record PlayerJoinedPayload(
+	PlayerIdentity player
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/playerlist/joined", "loon/player/" + player.uuid() + "/joined");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/player/list/PlayerKickedPayload.java

@@ -0,0 +1,16 @@
+package ciomek.loon.mqtt.payload.player.list;
+
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+
+import java.util.List;
+
+public record PlayerKickedPayload(
+	PlayerIdentity player,
+	String reason
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/playerlist/kicked", "loon/player/" + player.uuid() + "/kicked");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/player/list/PlayerLeftPayload.java

@@ -0,0 +1,15 @@
+package ciomek.loon.mqtt.payload.player.list;
+
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+
+import java.util.List;
+
+public record PlayerLeftPayload(
+	PlayerIdentity player
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/playerlist/left", "loon/player/" + player.uuid() + "/left");
+	}
+}

src/main/java/ciomek/loon/mqtt/payload/world/chunks/ChunkMapPayload.java

@@ -0,0 +1,17 @@
+package ciomek.loon.mqtt.payload.world.chunks;
+
+import ciomek.loon.mqtt.payload.Payload;
+import ciomek.loon.mqtt.payload.data.ChunkData;
+import ciomek.loon.mqtt.payload.data.ItemStackData;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+
+import java.util.List;
+
+public record ChunkMapPayload(
+	ChunkData chunk
+) implements Payload {
+	@Override
+	public List<String> topics() {
+		return List.of("loon/world/chunk/" + chunk.x() + "/" + chunk.z(), "loon/world/chunk/" + chunk.x() + "/" + chunk.z() + "/response");
+	}
+}

src/main/java/ciomek/loon/mqtt/request/ChunkMapRequest.java

@@ -0,0 +1,89 @@
+package ciomek.loon.mqtt.request;
+
+import ciomek.loon.mqtt.payload.data.BlockData;
+import ciomek.loon.mqtt.payload.data.ChunkData;
+import ciomek.loon.mqtt.payload.world.chunks.ChunkMapPayload;
+import net.minecraft.core.block.Block;
+import net.minecraft.core.block.material.MaterialColor;
+import net.minecraft.core.world.World;
+import net.minecraft.core.world.biome.Biome;
+import net.minecraft.core.world.chunk.Chunk;
+import net.minecraft.core.world.chunk.ChunkLoader;
+import net.minecraft.core.world.chunk.provider.ChunkProvider;
+import net.minecraft.core.world.pos.ChunkPos;
+import net.minecraft.core.world.pos.ChunkTilePos;
+import net.minecraft.server.MinecraftServer;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+public record ChunkMapRequest(int xStart, int xEnd, int zStart, int zEnd) implements IRequest {
+	@Override
+	public void handle(MinecraftServer server) {
+		World world = server.getDimensionWorld(0);
+		ChunkProvider provider = world.getChunkProvider();
+		ChunkLoader loader = world.getLevelStorage().getChunkLoader(world.dimension);
+
+		for (int x = xStart; x <= xEnd; x++) {
+			for (int z = zStart; z <= zEnd; z++) {
+				Chunk currentChunk = resolveChunk(world, provider, loader, x, z);
+
+				if  (currentChunk == null) {
+					ChunkData chunkData = new ChunkData(null, "", x, z, false);
+					new ChunkMapPayload(chunkData).send();
+					continue;
+				}
+
+				String biomeName = getBiomeName(currentChunk);
+
+				List<List<BlockData>> chunkMap = new ArrayList<>();
+				for (int chunkX = 0; chunkX < 16; chunkX++) {
+					chunkMap.add(new ArrayList<>());
+
+					for (int chunkZ = 0; chunkZ < 16; chunkZ++) {
+						int highestBlockY = Math.max(0, currentChunk.getHeightValue(chunkX, chunkZ) - 1);
+
+						Block block = currentChunk.getBlock(new ChunkTilePos(chunkX, highestBlockY, chunkZ));
+
+						int meta = currentChunk.getBlockMetadata(chunkX, highestBlockY, chunkZ);
+						int rgb = MaterialColor.getColorFromIndex(
+							MaterialColor.getColorIndexFromBlock(block, meta)
+						);
+
+						BlockData blockData = new BlockData(block.getKey(), block.id(), rgb);
+
+						chunkMap.get(chunkX).add(blockData);
+					}
+				}
+
+				ChunkData chunkData = new ChunkData(chunkMap, biomeName, x, z, true);
+				new ChunkMapPayload(chunkData).send();
+			}
+		}
+	}
+
+	String getBiomeName(Chunk chunk)
+	{
+		int surfaceY = Math.max(0, chunk.getHeightValue(8, 8) - 1);
+		Biome biome = chunk.getBlockBiome(new ChunkTilePos(8, surfaceY, 8));
+		return biome != null ? biome.getRegistryKey() : "?";
+	}
+
+	Chunk resolveChunk(World world, ChunkProvider provider, ChunkLoader loader, int x, int z)
+	{
+		ChunkPos chunkPos = new ChunkPos(x, z);
+
+		if (provider.isChunkLoaded(chunkPos))
+			return world.getChunk(chunkPos);
+
+		if (loader == null || !loader.chunkExists(world, x, z))
+			return null;
+
+		try {
+			return loader.loadChunk(world, x, z);
+		} catch (IOException e) {
+			return null;
+		}
+	}
+}

src/main/java/ciomek/loon/mqtt/request/IRequest.java

@@ -0,0 +1,9 @@
+package ciomek.loon.mqtt.request;
+
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.entity.player.PlayerServer;
+
+public interface IRequest
+{
+	void handle(MinecraftServer server);
+}

src/main/java/ciomek/loon/mqtt/request/InventoryRequest.java

@@ -0,0 +1,37 @@
+package ciomek.loon.mqtt.request;
+
+import ciomek.loon.mqtt.MQTTClient;
+import ciomek.loon.mqtt.payload.data.ItemStackData;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+import ciomek.loon.mqtt.payload.player.inventory.PlayerInventoryPayload;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.entity.player.PlayerServer;
+
+import java.util.Arrays;
+import java.util.UUID;
+
+public record InventoryRequest(UUID playerUuid) implements IRequest {
+	@Override
+	public void handle(MinecraftServer server) {
+		PlayerServer player = server.playerList.playerEntities.stream()
+			.filter(playerServer -> playerServer.uuid.equals(playerUuid))
+			.findFirst()
+			.orElse(null);
+
+		if (player == null) {
+			return;
+		}
+
+		PlayerInventoryPayload payload = new PlayerInventoryPayload(
+			new PlayerIdentity(player.uuid, player.username),
+			Arrays.stream(player.inventory.mainInventory)
+				.map(ItemStackData::from)
+				.toList(),
+			Arrays.stream(player.inventory.armorInventory)
+				.map(ItemStackData::from)
+				.toList()
+		);
+
+		payload.send();
+	}
+}

src/main/java/ciomek/loon/mqtt/request/PlayerOnlineRequest.java

@@ -0,0 +1,38 @@
+package ciomek.loon.mqtt.request;
+
+import ciomek.loon.mqtt.payload.data.ItemStackData;
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+import ciomek.loon.mqtt.payload.player.PlayerOnlinePayload;
+import ciomek.loon.mqtt.payload.player.inventory.PlayerInventoryPayload;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.entity.player.PlayerServer;
+
+import java.util.Arrays;
+import java.util.UUID;
+
+public record PlayerOnlineRequest(UUID playerUuid) implements IRequest {
+	@Override
+	public void handle(MinecraftServer server) {
+		boolean online = server.playerList.playerEntities.stream()
+			.anyMatch(p -> p.uuid.equals(playerUuid));
+
+		PlayerServer player = server.playerList.playerEntities.stream()
+			.filter(p -> p.uuid.equals(playerUuid))
+			.findFirst()
+			.orElse(null);
+
+		PlayerIdentity identity;
+		if(player == null) {
+			identity = new PlayerIdentity(playerUuid, "");
+		}
+		else {
+			identity = new PlayerIdentity(player.uuid, player.username);
+		}
+
+		PlayerOnlinePayload payload = new PlayerOnlinePayload(
+			identity,
+			online);
+
+		payload.send();
+	}
+}

src/main/java/ciomek/loon/mqtt/request/PlayerPositionRequest.java

@@ -0,0 +1,39 @@
+package ciomek.loon.mqtt.request;
+
+import ciomek.loon.mqtt.payload.data.PlayerIdentity;
+import ciomek.loon.mqtt.payload.data.PositionData;
+import ciomek.loon.mqtt.payload.player.PlayerOnlinePayload;
+import ciomek.loon.mqtt.payload.player.PlayerPositionPayload;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.entity.player.PlayerServer;
+
+import java.util.UUID;
+
+public record PlayerPositionRequest(UUID playerUuid) implements IRequest {
+	@Override
+	public void handle(MinecraftServer server) {
+		PlayerServer player = server.playerList.playerEntities.stream()
+			.filter(p -> p.uuid.equals(playerUuid))
+			.findFirst()
+			.orElse(null);
+
+		if (player == null) {
+			PlayerPositionPayload payload = new PlayerPositionPayload(
+				new PlayerIdentity(playerUuid, null),
+				null,
+				null
+			);
+			payload.send();
+		}
+		else {
+			PositionData playerPosition = new PositionData(player.x, player.y, player.z);
+
+			PlayerPositionPayload payload = new PlayerPositionPayload(
+				new PlayerIdentity(player.uuid, player.username),
+				playerPosition,
+				player.dimension
+			);
+			payload.send();
+		}
+	}
+}

src/main/java/ciomek/loon/mqtt/request/RequestManager.java

@@ -0,0 +1,17 @@
+package ciomek.loon.mqtt.request;
+
+import java.util.concurrent.ConcurrentLinkedQueue;
+
+public class RequestManager {
+	static ConcurrentLinkedQueue<IRequest> queue = new ConcurrentLinkedQueue<>();
+
+	public static void addRequest(IRequest request)
+	{
+		queue.add(request);
+	}
+
+	public static IRequest pollRequest()
+	{
+		return queue.poll();
+	}
+}

src/main/java/ciomek/loon/mqtt/request/ServerInfoRequest.java

@@ -0,0 +1,25 @@
+package ciomek.loon.mqtt.request;
+
+import ciomek.loon.TPSTracker;
+import ciomek.loon.mixin.WorldServerMixin;
+import ciomek.loon.mqtt.payload.ServerInfoPayload;
+import net.minecraft.server.MinecraftServer;
+
+public record ServerInfoRequest() implements IRequest {
+	@Override
+	public void handle(MinecraftServer server) {
+		ServerInfoPayload payload = new ServerInfoPayload(
+			TPSTracker.getTPS(),
+			server.getMinecraftVersion(),
+			server.motd,
+			server.onlineMode,
+			server.sleepPercentage,
+			server.playerList.playerEntities.size(),
+			server.maxPlayers,
+			server.difficulty,
+			server.pvpOn,
+			server.viewDistance);
+
+		payload.send();
+	}
+}

src/main/resources/fabric.mod.json

@@ -0,0 +1,33 @@
+{
+	"schemaVersion": 1,
+	"id": "loon",
+	"version": "${version}",
+	"name": "Example Mod",
+	"description": "This mod aims to help new BTA modders.",
+	"authors": [
+		"Turnip Labs"
+	],
+	"contact": {
+		"homepage": "",
+		"sources": ""
+	},
+	"icon": "icon.png",
+	"license": "CC0-1.0",
+	"environment": "*",
+	"entrypoints": {
+		"main": [
+			"ciomek.loon.Loon"
+		]
+	},
+	"mixins": [
+		"loon.mixins.json"
+	],
+	"depends": {
+		"fabricloader": ">=${fabricloader}",
+		"minecraft": "*",
+		"java": ">=${java}"
+	},
+	"suggests": {
+		"modmenu": ">=${modmenu}"
+	}
+}

src/main/resources/loon.mixins.json

@@ -0,0 +1,18 @@
+{
+  "required": true,
+  "package": "ciomek.loon.mixin",
+  "compatibilityLevel": "JAVA_${java}",
+  "injectors": {
+    "defaultRequire": 1
+  },
+  "mixins": [
+    "ContainerInventoryMQTTMixin",
+    "EntityItemMQTTMixin",
+    "PacketHandlerServerMQTTMixin",
+    "PlayerListMQTTMixin",
+    "PlayerMQTTMixin",
+    "WorldServerMixin"
+  ],
+  "client": []
+}
+