fix: update dependencies and rebranding

.gitignore

@@ -37,6 +37,8 @@ target/
 gradle-app.setting
 .gradletasknamecache
 .gradle
+build/
+*/build/
 
 # Package Files #
 *.jar
@@ -47,6 +49,37 @@ gradle-app.setting
 *.tar.gz
 *.rar
 
-# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+# virtual machine crash logs
 hs_err_pid*
+replay_pid*
+
+# Paper/Akarin specific
+paper-api/
+paper-server/
+.paper-nms/
+.paper-nms.at
+.paper-nms.mixin
+.paper-nms.plugin
+.paper-nms.remapped
+.paper-nms.remapped.notch
+.paper-nms.remapped.spigot
+.paper-nms.remapped.yarn
+.paper-nms.remapped.mojang
+.paper-nms.remapped.obf
+.paper-nms.remapped.srg
+.paper-nms.remapped.tsrg
+.paper-nms.remapped.tiny
+.paper-nms.remapped.csrg
+.paper-nms.remapped.proguard
+.paper-nms.remapped.retroguard
+.paper-nms.remapped.specialsource
+.paper-nms.remapped.asm
+.paper-nms.remapped.fernflower
+.paper-nms.remapped.cfr
+.paper-nms.remapped.procyon
+.paper-nms.remapped.quiltflower
+
+# OS specific
+.DS_Store
+Thumbs.db
 

NOTES.md

@@ -0,0 +1,29 @@
+# Development Notes
+
+## Patching System
+Modern Paper forks (including Purpur) use a file-based patching system:
+
+### API Patches
+- Located in `purpur-api/paper-patches/files/`
+- Contains patches for API source files
+
+### Server Patches
+1. Minecraft Patches (`purpur-server/minecraft-patches/`)
+   - `features/` - Feature-specific patches
+   - `sources/` - Direct source code modifications
+
+2. Paper Patches (`purpur-server/paper-patches/`)
+   - `features/` - Feature-specific patches
+   - `files/` - Source code modifications
+
+### Historical Patches
+The `patches/` directory contains only historical patches from older versions:
+- 1-20-6 (dropped)
+- 1-21-1 (dropped)
+- 1-21-3 (dropped)
+- Some unapplied patches
+
+## Reference
+- Purpur reference implementation can be found at `~/purpur-reference`
+- Clean Purpur clone at `~/purpur-clean`
+- Version: 1.21.4 

build.gradle.kts

@@ -0,0 +1,90 @@
+import org.gradle.api.tasks.testing.logging.TestExceptionFormat
+import org.gradle.api.tasks.testing.logging.TestLogEvent
+
+plugins {
+    java
+    id("io.papermc.paperweight.patcher") version "2.0.0-beta.14"
+}
+
+val paperMavenPublicUrl = "https://repo.papermc.io/repository/maven-public/"
+
+paperweight {
+    upstreams.paper {
+        ref = providers.gradleProperty("paperCommit")
+
+        patchFile {
+            path = "paper-server/build.gradle.kts"
+            outputFile = file("akarin-server/build.gradle.kts")
+            patchFile = file("akarin-server/build.gradle.kts.patch")
+        }
+        patchFile {
+            path = "paper-api/build.gradle.kts"
+            outputFile = file("akarin-api/build.gradle.kts")
+            patchFile = file("akarin-api/build.gradle.kts.patch")
+        }
+        patchDir("paperApi") {
+            upstreamPath = "paper-api"
+            excludes = setOf("build.gradle.kts")
+            patchesDir = file("akarin-api/paper-patches")
+            outputDir = file("paper-api")
+        }
+        patchDir("paperServer") {
+            upstreamPath = "paper-server"
+            excludes = setOf("src/minecraft", "patches", "build.gradle.kts")
+            patchesDir = file("akarin-server/paper-patches")
+            outputDir = file("paper-server")
+        }
+    }
+}
+
+subprojects {
+    apply(plugin = "java-library")
+    apply(plugin = "maven-publish")
+
+    extensions.configure<JavaPluginExtension> {
+        toolchain {
+            languageVersion = JavaLanguageVersion.of(21)
+        }
+    }
+
+    tasks.withType<JavaCompile> {
+        options.encoding = Charsets.UTF_8.name()
+        options.release = 21
+        options.isFork = true
+    }
+    tasks.withType<Javadoc> {
+        options.encoding = Charsets.UTF_8.name()
+    }
+    tasks.withType<ProcessResources> {
+        filteringCharset = Charsets.UTF_8.name()
+    }
+    tasks.withType<Test> {
+        testLogging {
+            showStackTraces = true
+            exceptionFormat = TestExceptionFormat.FULL
+            events(TestLogEvent.STANDARD_OUT)
+        }
+    }
+    tasks.withType<AbstractArchiveTask>().configureEach {
+        isPreserveFileTimestamps = false
+        isReproducibleFileOrder = true
+    }
+
+    repositories {
+        mavenCentral()
+        maven("https://repo.papermc.io/repository/maven-public/")
+        maven("https://jitpack.io")
+    }
+}
+
+tasks.register("printMinecraftVersion") {
+    doLast {
+        println(providers.gradleProperty("mcVersion").get().trim())
+    }
+}
+
+tasks.register("printAkarinVersion") {
+    doLast {
+        println(project.version)
+    }
+} 

gradle.properties

@@ -0,0 +1,11 @@
+group = io.akarin
+version = 1.21.4-R0.1-SNAPSHOT
+mcVersion = 1.21.4
+
+paperCommit = 8eb8e44ac32a99f53da7af50e800ac8831030580
+
+org.gradle.parallel = true
+org.gradle.caching = true
+org.gradle.configuration-cache = true
+org.gradle.configuration-cache.problems = warn
+org.gradle.jvmargs = -Xmx3G 

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.12-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

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 $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        ulimit -n "$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, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$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 "$JAVACMD" "$@"

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

scripts/init.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+# Initialize Paper upstream for Akarin
+
+(
+set -e
+PS1="$"
+
+paperCommit=$(grep -oP 'paperCommit = \K[a-f0-9]+' gradle.properties)
+
+if [ ! -d ".gradle/caches/paperweight/upstreams/paper" ]; then
+    mkdir -p .gradle/caches/paperweight/upstreams/paper
+fi
+
+cd .gradle/caches/paperweight/upstreams/paper
+
+if [ ! -d ".git" ]; then
+    git init
+    git remote add origin https://github.com/PaperMC/Paper.git
+fi
+
+git fetch origin $paperCommit
+git checkout -f $paperCommit
+
+echo "Paper upstream initialized at commit $paperCommit"
+) || exit 1 

settings.gradle.kts

@@ -0,0 +1,37 @@
+import java.util.Locale
+
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        maven("https://repo.papermc.io/repository/maven-public/")
+    }
+}
+
+plugins {
+    id("org.gradle.toolchains.foojay-resolver-convention") version "0.9.0"
+}
+
+rootProject.name = "akarin"
+for (name in listOf("akarin-api", "akarin-server", "paper-api")) {
+    val projName = name.lowercase(Locale.ENGLISH)
+    include(projName)
+    findProject(":$projName")!!.projectDir = file(name)
+}
+
+optionalInclude("test-plugin")
+
+fun optionalInclude(name: String, op: (ProjectDescriptor.() -> Unit)? = null) {
+    val settingsFile = file("$name.settings.gradle.kts")
+    if (settingsFile.exists()) {
+        apply(from = settingsFile)
+        findProject(":$name")?.let { op?.invoke(it) }
+    } else {
+        settingsFile.writeText(
+            """
+            // Uncomment to enable the '$name' project
+            // include(":$name")
+
+            """.trimIndent()
+        )
+    }
+} 

test-plugin.settings.gradle.kts

@@ -0,0 +1,2 @@
+// Uncomment to enable the 'test-plugin' project
+// include(":test-plugin")