wip kotlin modloader for minecraft 1.21.11

initial

+12
.gitattributes
···
+
#
+
# https://help.github.com/articles/dealing-with-line-endings/
+
#
+
# Linux start script should use lf
+
/gradlew text eol=lf
+
+
# These are Windows script files and should use crlf
+
*.bat text eol=crlf
+
+
# Binary files should be left untouched
+
*.jar binary
+
+8
.gitignore
···
+
# Ignore Gradle project-specific cache directory
+
.gradle
+
+
# Ignore Gradle build output directory
+
build
+
+
run
+
mods
+8
api/build.gradle.kts
···
+
plugins {
+
alias(libs.plugins.kotlin)
+
}
+
+
kotlin {
+
jvmToolchain(21)
+
explicitApi()
+
}
+8
api/src/main/kotlin/sh/potassium/vertigo/ModMeta.kt
···
+
package sh.potassium.vertigo
+
+
public interface ModMeta {
+
public val id: String
+
public val displayName: String
+
public val authors: List<String>
+
public val version: String
+
}
+27
build.gradle.kts
···
+
plugins {
+
alias(libs.plugins.kotlin)
+
alias(libs.plugins.shadow)
+
application
+
}
+
+
tasks {
+
assemble {
+
dependsOn(shadowJar)
+
}
+
}
+
+
application {
+
mainClass = "sh.potassium.vertigo.VertigoEntrypointKt"
+
+
}
+
+
dependencies {
+
implementation(project(":api"))
+
implementation(libs.classgraph)
+
implementation(libs.kotlin.reflect)
+
}
+
+
kotlin {
+
jvmToolchain(21)
+
explicitApi()
+
}
+1
gradle.properties
···
+
org.gradle.configuration-cache=true
+12
gradle/libs.versions.toml
···
+
[versions]
+
kotlin = "2.2.21"
+
shadow = "9.2.1"
+
classgraph = "4.8.181"
+
+
[libraries]
+
classgraph = { module = "io.github.classgraph:classgraph", version.ref = "classgraph" }
+
kotlin-reflect = { module = "org.jetbrains.kotlin:kotlin-reflect", version.ref = "kotlin" }
+
+
[plugins]
+
kotlin = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }
+
shadow = { id = "com.gradleup.shadow", version.ref = "shadow" }
gradle/wrapper/gradle-wrapper.jar

This is a binary file and will not be displayed.

+7
gradle/wrapper/gradle-wrapper.properties
···
+
distributionBase=GRADLE_USER_HOME
+
distributionPath=wrapper/dists
+
distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip
+
networkTimeout=10000
+
validateDistributionUrl=true
+
zipStoreBase=GRADLE_USER_HOME
+
zipStorePath=wrapper/dists
+248
gradlew
···
+
#!/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 "$JAVACMD" "$@"
+93
gradlew.bat
···
+
@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
+10
settings.gradle.kts
···
+
rootProject.name = "vertigo"
+
+
dependencyResolutionManagement {
+
repositories {
+
mavenCentral()
+
}
+
}
+
+
include(":api")
+
include(":test-mod")
+7
src/main/kotlin/sh/potassium/vertigo/VertigoEntrypoint.kt
···
+
package sh.potassium.vertigo
+
+
import sh.potassium.vertigo.meta.ModMetaLoader
+
+
public fun main() {
+
println(ModMetaLoader.loadMetas())
+
}
+9
src/main/kotlin/sh/potassium/vertigo/game/GameProvider.kt
···
+
package sh.potassium.vertigo.game
+
+
public interface GameProvider {
+
public val name: String
+
public val entrypoint: String
+
+
public fun bootstrapClassLoader(cl: ClassLoader) {}
+
public fun launch()
+
}
+26
src/main/kotlin/sh/potassium/vertigo/meta/ModMetaClassLoader.kt
···
+
package sh.potassium.vertigo.meta
+
+
import io.github.classgraph.ClassGraph
+
import sh.potassium.vertigo.ModMeta
+
import java.net.URLClassLoader
+
import java.nio.file.Path
+
+
public class ModMetaClassLoader(file: Path) : URLClassLoader(arrayOf(file.toUri().toURL())) {
+
public fun compute(): List<ModMetaSnapshot> {
+
return ClassGraph()
+
.overrideClassLoaders(this)
+
.enableClassInfo()
+
.scan()
+
.getClassesImplementing(ModMeta::class.java)
+
.mapNotNull { info ->
+
val klass = info.loadClass(ModMeta::class.java).kotlin
+
val inst = klass.objectInstance
+
if (inst == null) {
+
println("Not an object: ${info.packageName}")
+
return@mapNotNull null
+
}
+
+
ModMetaSnapshot(inst.id, inst.displayName, inst.authors, inst.version)
+
}
+
}
+
}
+16
src/main/kotlin/sh/potassium/vertigo/meta/ModMetaLoader.kt
···
+
package sh.potassium.vertigo.meta
+
+
import sh.potassium.vertigo.util.filesInDirectory
+
import java.nio.file.Path
+
import kotlin.io.path.Path
+
+
public object ModMetaLoader {
+
public fun modJars(): List<Path> {
+
return Path("mods").filesInDirectory()
+
}
+
+
public fun loadMetas(): List<ModMetaSnapshot> {
+
val jars = modJars()
+
return jars.flatMap { jar -> ModMetaClassLoader(jar).compute() }
+
}
+
}
+8
src/main/kotlin/sh/potassium/vertigo/meta/ModMetaSnapshot.kt
···
+
package sh.potassium.vertigo.meta
+
+
public data class ModMetaSnapshot(
+
public val id: String,
+
public val displayName: String,
+
public val authors: List<String>,
+
public val version: String,
+
)
+17
src/main/kotlin/sh/potassium/vertigo/util/io.kt
···
+
package sh.potassium.vertigo.util
+
+
import java.nio.file.FileVisitResult
+
import java.nio.file.Path
+
import kotlin.io.path.visitFileTree
+
+
public fun Path.filesInDirectory(maxDepth: Int = 1): List<Path> {
+
val paths = mutableListOf<Path>()
+
visitFileTree(maxDepth) {
+
onVisitFile { path, _ ->
+
paths.add(path)
+
FileVisitResult.CONTINUE
+
}
+
}
+
+
return paths
+
}
+12
test-mod/build.gradle.kts
···
+
plugins {
+
alias(libs.plugins.kotlin)
+
}
+
+
dependencies {
+
implementation(project(":api"))
+
}
+
+
kotlin {
+
jvmToolchain(21)
+
explicitApi()
+
}
+10
test-mod/src/main/kotlin/sh/potassium/vertigo/testmod/TestModMeta.kt
···
+
package sh.potassium.vertigo.testmod
+
+
import sh.potassium.vertigo.ModMeta
+
+
public object TestModMeta : ModMeta {
+
override val id: String = "test-mod"
+
override val displayName: String = "Test Mod :D"
+
override val authors: List<String> = listOf("rad")
+
override val version: String = "0.0.0"
+
}