Initial commit

21 files changed, 870 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..2fb5d70
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+run
+.gradle
+build
diff --git a/build.gradle.kts b/build.gradle.kts
new file mode 100644
index 0000000..45bdb49
--- /dev/null
+++ b/build.gradle.kts
@@ -0,0 +1,107 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+plugins {
+    kotlin("jvm") version "1.9.22"
+    `maven-publish`
+    id("xyz.wagyourtail.unimined") version "1.2.0-SNAPSHOT"
+}
+
+group = "moe.nea"
+version = "1.0-SNAPSHOT"
+
+repositories {
+    maven("https://jitpack.io")
+    maven("https://repo.polyfrost.cc/releases")
+    mavenCentral()
+}
+
+unimined.minecraft {
+    version("1.8.9")
+    mappings {
+        searge()
+        mcp("stable", "22-1.8.9")
+    }
+    minecraftForge {
+        loader("11.15.1.2318-1.8.9")
+        mixinConfig("veloxcaelo.mixins.json")
+    }
+    runs {
+        this.config("client") {
+            this.args.addAll(listOf("--tweakClass", "org.spongepowered.asm.launch.MixinTweaker"))
+            this.env.put(
+                "LD_LIBRARY_PATH",
+                ":/nix/store/agp6lqznayysqvqkx4k1ggr8n1rsyi8c-gcc-13.2.0-lib/lib:/nix/store/ldi0rb00gmbdg6915lhch3k3b3ib460z-libXcursor-1.2.2/lib:/nix/store/8xbbv82pabjcbj30vrna4gcz4g9q97z4-libXrandr-1.5.4/lib:/nix/store/smrb2g0addhgahkfjjl3k8rfd30gdc29-libXxf86vm-1.1.5/lib:/nix/store/lpqy1z1h8li6h3cp9ax6vifl71dks1ff-libglvnd-1.7.0/lib"
+            )
+        }
+    }
+}
+
+
+val downloadOptifine by tasks.creating {
+    val outputFile = layout.buildDirectory.file("download/optifine.jar")
+    outputs.file(outputFile)
+    doLast {
+        outputFile.get().asFile.parentFile.mkdirs()
+        uri("https://optifine.net/download?f=preview_OptiFine_1.8.9_HD_U_M6_pre2.jar")
+            .toURL()
+            .openStream().use { input ->
+                outputFile.get().asFile.outputStream().use { output ->
+                    input.copyTo(output)
+                }
+            }
+    }
+}
+
+dependencies {
+    testImplementation("org.jetbrains.kotlin:kotlin-test")
+    implementation("org.spongepowered:mixin:0.7.11-SNAPSHOT")
+    compileOnly(project.files(downloadOptifine))
+    compileOnly("org.jetbrains:annotations:24.1.0")
+}
+
+tasks.test {
+    useJUnitPlatform()
+}
+
+sourceSets.main {
+    output.setResourcesDir(sourceSets.main.flatMap { it.java.classesDirectory })
+    kotlin.destinationDirectory.set(java.destinationDirectory)
+}
+tasks.processResources {
+    filesMatching("*.mixins.json") {
+        this.filter(
+            mapOf("sourceRoots" to sourceSets.main.get().allSource.srcDirs
+                .filter { it.exists() }.joinToString(":") { it.absolutePath }),
+            MixinFilterReader::class.java
+        )//TODO: keep old existing class names in mixins array
+    }
+}
+
+tasks.compileJava {
+    dependsOn(tasks.processResources)
+}
+java {
+    targetCompatibility = JavaVersion.VERSION_1_8
+    sourceCompatibility = JavaVersion.VERSION_1_8
+}
+tasks.withType(JavaCompile::class) {
+    this.options.encoding = "UTF-8"
+}
+tasks.withType(KotlinCompile::class) {
+    this.compilerOptions {
+        this.jvmTarget.set(org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_1_8)
+    }
+}
+
+tasks.withType(Jar::class) {
+    destinationDirectory.set(project.layout.buildDirectory.dir("badjars"))
+    archiveBaseName.set("VeloxCaelo")
+    manifest.attributes.run {
+        this["FMLCorePluginContainsFMLMod"] = "true"
+        this["ForceLoadAsMod"] = "true"
+
+        // If you don't want mixins, remove these lines
+        this["TweakClass"] = "org.spongepowered.asm.launch.MixinTweaker"
+        this["MixinConfigs"] = "veloxcaelo.mixins.json"
+    }
+}
\ No newline at end of file
diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
new file mode 100644
index 0000000..6799cc7
--- /dev/null
+++ b/buildSrc/build.gradle.kts
@@ -0,0 +1,18 @@
+
+plugins {
+    `kotlin-dsl`
+    kotlin("jvm")version "1.8.10"
+}
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation("com.google.code.gson:gson:2.10.1")
+}
+
+sourceSets.main {
+    kotlin {
+        srcDir(file("src"))
+    }
+}
\ No newline at end of file
diff --git a/buildSrc/src/FixMixins.kt b/buildSrc/src/FixMixins.kt
new file mode 100644
index 0000000..ea5f031
--- /dev/null
+++ b/buildSrc/src/FixMixins.kt
@@ -0,0 +1,43 @@
+import com.google.gson.Gson
+import com.google.gson.JsonArray
+import com.google.gson.JsonObject
+import com.google.gson.JsonPrimitive
+import org.apache.tools.ant.filters.BaseParamFilterReader
+import java.io.File
+import java.io.Reader
+import java.io.StringReader
+
+class MixinFilterReader(reader: Reader) : BaseParamFilterReader() {
+    lateinit var sourceRoots: String
+    val betterReader: StringReader by lazy {
+        StringReader(run {
+            val json = Gson().fromJson(reader.readText(), JsonObject::class.java)
+            val mixinPackage = (json["package"] as JsonPrimitive).asString
+            val allMixins = JsonArray()
+            sourceRoots
+                .split(":")
+                .map { File(it) }
+                .forEach { base ->
+                    base.walk()
+                        .filter { it.isFile }
+                        .forEach {
+                            val relativeString = it.toRelativeString(base).replace("\\", "/")
+                            if (relativeString.startsWith(mixinPackage.replace(".", "/") + "/")
+                                && relativeString.endsWith(".java")
+                                && it.readText().contains("@Mixin")
+                            )
+                                allMixins.add(
+                                    relativeString.replace("/", ".").dropLast(5).drop(mixinPackage.length + 1)
+                                )
+                        }
+                }
+            json.add("mixins", allMixins)
+            Gson().toJson(json)
+        })
+
+    }
+
+    override fun read(): Int {
+        return betterReader.read()
+    }
+}
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 0000000..c873b79
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1,2 @@
+kotlin.code.style=official
+org.gradle.jvmargs=-Xmx2G
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..7f93135
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.jar
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..3fa8f86
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..1aa94a4
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,249 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 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.
+#
+
+##############################################################################
+#
+#   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/subprojects/plugins/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 "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&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
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$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 "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( 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, 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=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$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 "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..93e3f59
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@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.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+: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
diff --git a/settings.gradle.kts b/settings.gradle.kts
new file mode 100644
index 0000000..2b77b1f
--- /dev/null
+++ b/settings.gradle.kts
@@ -0,0 +1,18 @@
+
+pluginManagement {
+    repositories {
+        mavenCentral()
+        gradlePluginPortal()
+        maven("https://oss.sonatype.org/content/repositories/snapshots")
+        maven("https://maven.architectury.dev/")
+        maven("https://maven.fabricmc.net")
+        maven("https://maven.wagyourtail.xyz/releases")
+        maven("https://maven.wagyourtail.xyz/snapshots")
+        maven("https://maven.neoforged.net/releases")
+        maven("https://maven.minecraftforge.net/")
+        maven("https://repo.spongepowered.org/maven/")
+        maven("https://repo.sk1er.club/repository/maven-releases/")
+    }
+}
+rootProject.name = "veloxcaelo"
+
diff --git a/src/main/java/moe/nea/caelo/Caelo.kt b/src/main/java/moe/nea/caelo/Caelo.kt
new file mode 100644
index 0000000..76e56bf
--- /dev/null
+++ b/src/main/java/moe/nea/caelo/Caelo.kt
@@ -0,0 +1,44 @@
+package moe.nea.caelo
+
+import moe.nea.caelo.event.NeaTickEvent
+import moe.nea.caelo.init.MixinPlugin
+import moe.nea.caelo.optifine.OptifineCustomItemCache
+import moe.nea.caelo.util.InterModUtil
+import moe.nea.caelo.util.MC
+import net.minecraft.client.Minecraft
+import net.minecraftforge.client.ClientCommandHandler
+import net.minecraftforge.common.MinecraftForge
+import net.minecraftforge.fml.common.Mod
+import net.minecraftforge.fml.common.event.FMLInitializationEvent
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent
+import net.minecraftforge.fml.common.gameevent.TickEvent
+import net.minecraftforge.fml.common.gameevent.TickEvent.ClientTickEvent
+
+@Mod(modid = "veloxcaelo", useMetadata = true)
+class Caelo {
+    @SubscribeEvent
+    fun onTick(tick: ClientTickEvent) {
+        if (tick.phase != TickEvent.Phase.END)
+            return
+        if (Minecraft.getMinecraft().thePlayer == null)
+            return
+        MinecraftForge.EVENT_BUS.post(NeaTickEvent(tickCount++))
+    }
+
+    var tickCount = 0
+
+    @Mod.EventHandler
+    fun onInit(event: FMLInitializationEvent) {
+        if (InterModUtil.isOptifineLoaded) {
+            MinecraftForge.EVENT_BUS.register(OptifineCustomItemCache)
+        }
+        MinecraftForge.EVENT_BUS.register(this)
+        ClientCommandHandler.instance.registerCommand(CaeloCommand)
+        CaeloCommand.subcommand("mixins") { args ->
+            MC.display("Injected mixins:")
+            MixinPlugin.loadedMixinClasses.forEach {
+                MC.display(" - $it")
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/moe/nea/caelo/CaeloCommand.kt b/src/main/java/moe/nea/caelo/CaeloCommand.kt
new file mode 100644
index 0000000..b5a1688
--- /dev/null
+++ b/src/main/java/moe/nea/caelo/CaeloCommand.kt
@@ -0,0 +1,54 @@
+package moe.nea.caelo
+
+import moe.nea.caelo.util.MC
+import net.minecraft.command.CommandBase
+import net.minecraft.command.ICommandSender
+import net.minecraft.util.BlockPos
+
+object CaeloCommand : CommandBase() {
+    override fun getCommandName(): String {
+        return "veloxcaelo"
+    }
+
+    override fun getCommandAliases(): List<String> {
+        return listOf("velox")
+    }
+
+    override fun canCommandSenderUseCommand(sender: ICommandSender?): Boolean {
+        return true
+    }
+
+    override fun getCommandUsage(sender: ICommandSender?): String {
+        return ""
+    }
+
+    override fun addTabCompletionOptions(
+        sender: ICommandSender?,
+        args: Array<out String>,
+        pos: BlockPos?
+    ): List<String> {
+        if (args.size == 1) {
+            return getListOfStringsMatchingLastWord(args, subcommands.keys)
+        }
+        return emptyList()
+    }
+
+    private val subcommands = mutableMapOf<String, (args: Array<String>) -> Unit>()
+
+    fun subcommand(name: String, function: (args: Array<String>) -> Unit) {
+        subcommands[name] = function
+    }
+
+    override fun processCommand(iCommandSender: ICommandSender?, args: Array<String>) {
+        if (args.isEmpty()) {
+            MC.display("§cMissing subcommand. Check the tab completions.")
+            return
+        }
+        val subCommand = subcommands[args[0]]
+        if (subCommand == null) {
+            MC.display("§cInvalid subcommand. Check the tab completions.")
+            return
+        }
+        subCommand.invoke(args)
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/moe/nea/caelo/event/NeaTickEvent.kt b/src/main/java/moe/nea/caelo/event/NeaTickEvent.kt
new file mode 100644
index 0000000..6121203
--- /dev/null
+++ b/src/main/java/moe/nea/caelo/event/NeaTickEvent.kt
@@ -0,0 +1,7 @@
+package moe.nea.caelo.event
+
+import net.minecraftforge.fml.common.eventhandler.Event
+
+data class NeaTickEvent(
+    val tickCounter: Int,
+) : Event()
\ No newline at end of file
diff --git a/src/main/java/moe/nea/caelo/init/MixinPlugin.java b/src/main/java/moe/nea/caelo/init/MixinPlugin.java
new file mode 100644
index 0000000..fafc55d
--- /dev/null
+++ b/src/main/java/moe/nea/caelo/init/MixinPlugin.java
@@ -0,0 +1,47 @@
+package moe.nea.caelo.init;
+
+import org.spongepowered.asm.lib.tree.ClassNode;
+import org.spongepowered.asm.mixin.extensibility.IMixinConfigPlugin;
+import org.spongepowered.asm.mixin.extensibility.IMixinInfo;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+public class MixinPlugin implements IMixinConfigPlugin {
+    @Override
+    public void onLoad(String mixinPackage) {
+    }
+
+    @Override
+    public String getRefMapperConfig() {
+        return null;
+    }
+
+    @Override
+    public boolean shouldApplyMixin(String targetClassName, String mixinClassName) {
+        return true;
+    }
+
+    @Override
+    public void acceptTargets(Set<String> myTargets, Set<String> otherTargets) {
+
+    }
+
+    @Override
+    public List<String> getMixins() {
+        return null;
+    }
+
+    @Override
+    public void preApply(String targetClassName, ClassNode targetClass, String mixinClassName, IMixinInfo mixinInfo) {
+
+    }
+
+    public static Set<String> loadedMixinClasses = new HashSet<>();
+
+    @Override
+    public void postApply(String targetClassName, ClassNode targetClass, String mixinClassName, IMixinInfo mixinInfo) {
+        loadedMixinClasses.add(mixinClassName);
+    }
+}
diff --git a/src/main/java/moe/nea/caelo/mixin/PatchCustomItemModelCache.java b/src/main/java/moe/nea/caelo/mixin/PatchCustomItemModelCache.java
new file mode 100644
index 0000000..afeafef
--- /dev/null
+++ b/src/main/java/moe/nea/caelo/mixin/PatchCustomItemModelCache.java
@@ -0,0 +1,42 @@
+package moe.nea.caelo.mixin;
+
+import moe.nea.caelo.optifine.OptifineCustomItemCache;
+import net.minecraft.item.Item;
+import net.minecraft.item.ItemStack;
+import net.optifine.CustomItemProperties;
+import net.optifine.CustomItems;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Pseudo;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+import org.spongepowered.asm.mixin.injection.callback.LocalCapture;
+
+@Pseudo
+@Mixin(value = CustomItems.class, remap = false)
+public class PatchCustomItemModelCache {
+
+    @SuppressWarnings("InvalidInjectorMethodSignature")
+    @Inject(method = "getCustomItemProperties", at = @At("HEAD"), cancellable = true)
+    private static void overrideCustomItemProperties(
+            ItemStack itemStack, int type,
+            CallbackInfoReturnable<CustomItemProperties> cir) {
+        OptifineCustomItemCache.retrieveCacheHit(itemStack, type, cir);
+    }
+
+    @Inject(method = "getCustomItemProperties", at = @At(value = "RETURN", ordinal = 2),
+            locals = LocalCapture.CAPTURE_FAILHARD)
+    private static void storeCustomItemProperties(
+            ItemStack itemStack, int type, CallbackInfoReturnable<CustomItemProperties> cir,
+            Item item, int itemId, CustomItemProperties[] cips, int i, CustomItemProperties cip) {
+        OptifineCustomItemCache.storeCustomItemProperties(itemStack, type, cip);
+    }
+
+    @Inject(method = "getCustomItemProperties", at = @At(value = "RETURN", ordinal = 3))
+    private static void storeCustomItemProperties(
+            ItemStack itemStack, int type, CallbackInfoReturnable<CustomItemProperties> cir) {
+        OptifineCustomItemCache.storeNoCustomItemProperties(itemStack, type);
+    }
+
+
+}
\ No newline at end of file
diff --git a/src/main/java/moe/nea/caelo/optifine/OptifineCustomItemCache.kt b/src/main/java/moe/nea/caelo/optifine/OptifineCustomItemCache.kt
new file mode 100644
index 0000000..0bd6d78
--- /dev/null
+++ b/src/main/java/moe/nea/caelo/optifine/OptifineCustomItemCache.kt
@@ -0,0 +1,78 @@
+package moe.nea.caelo.optifine
+
+import moe.nea.caelo.CaeloCommand
+import moe.nea.caelo.event.NeaTickEvent
+import moe.nea.caelo.util.Histogram
+import moe.nea.caelo.util.MC
+import net.minecraft.item.ItemStack
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent
+import net.optifine.CustomItemProperties
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable
+
+object OptifineCustomItemCache {
+
+    init {
+        CaeloCommand.subcommand("opticache") { args ->
+            val cache = cacheSizeHistory.lastOrNull() ?: CacheStats()
+            MC.display("OptiCache stats:")
+            MC.display("- History: §3${cacheSizeHistory.size}")
+            MC.display("- Misses: §c${cache.cacheMisses}")
+            MC.display("- Hits: §a${cache.cacheHits}")
+            MC.display("- Entries: §b${cache.uniquePropertyBearingStacks}")
+        }
+    }
+
+    class CacheKey(val itemStack: ItemStack, val type: Int) {
+        override fun equals(other: Any?): Boolean {
+            if (other !is CacheKey) return false
+            return itemStack === other.itemStack && type == other.type
+        }
+
+        override fun hashCode(): Int {
+            return System.identityHashCode(itemStack) + type * 31
+        }
+    }
+
+    data class CacheStats(
+        var cacheHits: Int = 0,
+        var cacheMisses: Int = 0,
+        var uniquePropertyBearingStacks: Int = 0,
+    )
+
+    private val map = mutableMapOf<CacheKey, CustomItemProperties?>()
+    private val cacheSizeHistory = Histogram<CacheStats>(1000)
+    private var cacheStats = CacheStats()
+
+    @SubscribeEvent
+    fun onTick(event: NeaTickEvent) {
+        cacheSizeHistory.append(cacheStats)
+        cacheStats = CacheStats()
+        map.clear()
+    }
+
+    @JvmStatic
+    fun retrieveCacheHit(
+        itemStack: ItemStack,
+        type: Int,
+        cir: CallbackInfoReturnable<CustomItemProperties?>
+    ) {
+        val key = CacheKey(itemStack, type)
+        if (!map.containsKey(key)) {
+            cacheStats.cacheMisses++
+            return
+        }
+        cacheStats.cacheHits++
+        cir.returnValue = map[key]
+    }
+
+    @JvmStatic
+    fun storeCustomItemProperties(itemStack: ItemStack, type: Int, cip: CustomItemProperties) {
+        map[CacheKey(itemStack, type)] = cip
+        cacheStats.uniquePropertyBearingStacks++
+    }
+
+    @JvmStatic
+    fun storeNoCustomItemProperties(itemStack: ItemStack, type: Int) {
+        map[CacheKey(itemStack, type)] = null
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/moe/nea/caelo/util/Histogram.kt b/src/main/java/moe/nea/caelo/util/Histogram.kt
new file mode 100644
index 0000000..6c4add1
--- /dev/null
+++ b/src/main/java/moe/nea/caelo/util/Histogram.kt
@@ -0,0 +1,17 @@
+package moe.nea.caelo.util
+
+class Histogram<T>(val maxSize: Int) : Iterable<T> {
+    private val dequeue = ArrayDeque<T>()
+    fun append(element: T) {
+        dequeue.addLast(element)
+        if (dequeue.size > maxSize) {
+            dequeue.removeFirst()
+        }
+    }
+
+    val size get() = dequeue.size
+
+    override fun iterator(): Iterator<T> {
+        return dequeue.iterator()
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/moe/nea/caelo/util/InterModUtil.kt b/src/main/java/moe/nea/caelo/util/InterModUtil.kt
new file mode 100644
index 0000000..d7b4e90
--- /dev/null
+++ b/src/main/java/moe/nea/caelo/util/InterModUtil.kt
@@ -0,0 +1,8 @@
+package moe.nea.caelo.util
+
+import net.minecraftforge.fml.client.FMLClientHandler
+
+object InterModUtil {
+    val isOptifineLoaded get() = FMLClientHandler.instance().hasOptifine()
+
+}
diff --git a/src/main/java/moe/nea/caelo/util/MC.kt b/src/main/java/moe/nea/caelo/util/MC.kt
new file mode 100644
index 0000000..f05c217
--- /dev/null
+++ b/src/main/java/moe/nea/caelo/util/MC.kt
@@ -0,0 +1,13 @@
+package moe.nea.caelo.util
+
+import net.minecraft.client.Minecraft
+import net.minecraft.client.entity.EntityPlayerSP
+import net.minecraft.util.ChatComponentText
+
+object MC {
+    fun display(text: String) {
+        player?.addChatMessage(ChatComponentText("§b[Velox] §f$text"))
+    }
+
+    val player: EntityPlayerSP? get() = Minecraft.getMinecraft().thePlayer
+}
\ No newline at end of file
diff --git a/src/main/resources/mcmod.info b/src/main/resources/mcmod.info
new file mode 100644
index 0000000..90f1bf6
--- /dev/null
+++ b/src/main/resources/mcmod.info
@@ -0,0 +1,12 @@
+[
+  {
+    "modid": "veloxcaelo",
+    "name": "Velox Caelo",
+    "description": "The sky is not the limit",
+    "version": "1.0.0",
+    "mcversion": "1.8.9",
+    "authorList": [
+      "Linnea Gräf"
+    ]
+  }
+]
\ No newline at end of file
diff --git a/src/main/resources/veloxcaelo.mixins.json b/src/main/resources/veloxcaelo.mixins.json
new file mode 100644
index 0000000..fcbd00a
--- /dev/null
+++ b/src/main/resources/veloxcaelo.mixins.json
@@ -0,0 +1,9 @@
+{
+  "package": "moe.nea.caelo.mixin",
+  "refmap": "mixins.veloxcaelo.refmap.json",
+  "plugin": "moe.nea.caelo.init.MixinPlugin",
+  "minVersion": "0.7",
+  "compatibilityLevel": "JAVA_8",
+  "mixins": [
+  ]
+}
\ No newline at end of file