diff --git a/.gitea/workflows/build.yaml b/.gitea/workflows/build.yaml new file mode 100644 index 0000000..462cb89 --- /dev/null +++ b/.gitea/workflows/build.yaml @@ -0,0 +1,32 @@ +name: Build JStom + +on: + push: + branches: [ "main" ] + pull_request: + branches: [ "main" ] + +jobs: + build: + runs-on: ubuntu-latest + + steps: + - name: Checkout repository + uses: actions/checkout@v4 + + - name: Set up JDK 25 + uses: actions/setup-java@v4 + with: + java-version: '25-ea' + distribution: 'temurin' + # Falls back to other distributions if Temurin 25 isn't available, + # or Oracle OpenJDK if specific EA builds are needed. + + - name: Setup Gradle + uses: gradle/actions/setup-gradle@v3 + + - name: Grant execute permission for gradlew + run: chmod +x gradlew + + - name: Build with Gradle + run: ./gradlew build diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..d5c1589 --- /dev/null +++ b/.gitignore @@ -0,0 +1,42 @@ +# Gradle +.gradle +build/ +!gradle/wrapper/gradle-wrapper.jar +!**/src/main/**/build/ +!**/src/test/**/build/ + +# Java +*.class +*.log +*.ctxt +.mtj.tmp/ +*.jar +*.war +*.nar +*.ear +*.zip +*.tar.gz +*.rar + +# IntelliJ IDEA +.idea/ +*.iml +*.iws +*.ipr +out/ + +# Eclipse +.classpath +.project +.settings/ +bin/ + +# VS Code +.vscode/ + +# System +.DS_Store +Thumbs.db + +# Project specific +*.log diff --git a/build.gradle.kts b/build.gradle.kts new file mode 100644 index 0000000..2cc6a3c --- /dev/null +++ b/build.gradle.kts @@ -0,0 +1,38 @@ +plugins { + id("java") + id("application") +} + +group = "net.jstom" +version = "1.0-SNAPSHOT" + +repositories { + mavenCentral() + maven("https://jitpack.io") // For Minestom +} + +dependencies { + // Minestom - using master-SNAPSHOT + implementation("com.github.Minestom:Minestom:master-SNAPSHOT") + + // GraalJS for JavaScript engine + implementation("org.graalvm.polyglot:polyglot:24.1.2") + implementation("org.graalvm.polyglot:js:24.1.2") + + // Logging + implementation("org.slf4j:slf4j-simple:2.0.9") +} + +application { + mainClass.set("net.jstom.Main") +} + +java { + toolchain { + languageVersion.set(JavaLanguageVersion.of(25)) + } +} + +tasks.withType { + options.encoding = "UTF-8" +} diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..2a84e18 --- /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-9.0.0-bin.zip +networkTimeout=10000 +validateDistributionUrl=true +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/gradlew b/gradlew new file mode 100644 index 0000000..ef07e01 --- /dev/null +++ b/gradlew @@ -0,0 +1,251 @@ +#!/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 "$( uname )" in #( + CYGWIN* ) cygwin=true ;; #( + Darwin* ) darwin=true ;; #( + MSYS* | MINGW* ) msys=true ;; #( + NONSTOP* ) nonstop=true ;; +esac + +CLASSPATH="\\\"\\\"" + + +# Determine the Java command to use to start the JVM. +if [ -n "$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, 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" \ + -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 "$JAVACMD" "$@" diff --git a/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..db3a6ac --- /dev/null +++ b/gradlew.bat @@ -0,0 +1,94 @@ +@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 + +set CLASSPATH= + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -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 diff --git a/run.bat b/run.bat new file mode 100644 index 0000000..3b21bc8 --- /dev/null +++ b/run.bat @@ -0,0 +1,2 @@ +@echo off +call build\install\jstom\bin\jstom.bat diff --git a/scripts/index.js b/scripts/index.js new file mode 100644 index 0000000..3554a90 --- /dev/null +++ b/scripts/index.js @@ -0,0 +1,8 @@ +server.log("Hello from JavaScript!"); + +// Listen for player spawn +server.on('net.minestom.server.event.player.PlayerSpawnEvent', (event) => { + var player = event.getPlayer(); + player.sendMessage("Welcome to the JS-powered Minestom server!"); + server.log("Player " + player.getUsername() + " has spawned."); +}); diff --git a/settings.gradle.kts b/settings.gradle.kts new file mode 100644 index 0000000..775975f --- /dev/null +++ b/settings.gradle.kts @@ -0,0 +1 @@ +rootProject.name = "jstom" diff --git a/src/main/java/net/jstom/Main.java b/src/main/java/net/jstom/Main.java new file mode 100644 index 0000000..3fd5038 --- /dev/null +++ b/src/main/java/net/jstom/Main.java @@ -0,0 +1,74 @@ +package net.jstom; + +import net.jstom.script.ScriptManager; +import net.minestom.server.MinecraftServer; +import net.minestom.server.coordinate.Pos; +import net.minestom.server.entity.Player; +import net.minestom.server.event.GlobalEventHandler; +import net.minestom.server.event.player.AsyncPlayerConfigurationEvent; +import net.minestom.server.event.server.ServerListPingEvent; +import net.minestom.server.instance.InstanceContainer; +import net.minestom.server.instance.InstanceManager; +import net.minestom.server.instance.LightingChunk; +import net.minestom.server.instance.block.Block; + +import java.io.File; +import java.util.Scanner; + +public class Main { + public static void main(String[] args) { + // Initialize server + MinecraftServer minecraftServer = MinecraftServer.init(); + + InstanceManager instanceManager = MinecraftServer.getInstanceManager(); + // Create the instance + InstanceContainer instanceContainer = instanceManager.createInstanceContainer(); + // Set the ChunkGenerator + instanceContainer.setGenerator(unit -> + unit.modifier().fillHeight(0, 40, Block.GRASS_BLOCK) + ); + instanceContainer.setChunkSupplier(LightingChunk::new); + + // Add an event callback to specify the spawning instance (and the spawn position) + GlobalEventHandler globalEventHandler = MinecraftServer.getGlobalEventHandler(); + globalEventHandler.addListener(AsyncPlayerConfigurationEvent.class, event -> { + final Player player = event.getPlayer(); + event.setSpawningInstance(instanceContainer); + player.setRespawnPoint(new Pos(0, 42, 0)); + }); + + // Initialize Script Manager + ScriptManager scriptManager = new ScriptManager(new File("scripts")); + scriptManager.load(); + + // Console thread for commands + new Thread(() -> { + Scanner scanner = new Scanner(System.in); + while (scanner.hasNextLine()) { + String line = scanner.nextLine(); + String[] parts = line.split(" "); + String command = parts[0]; + + if (command.equalsIgnoreCase("reload")) { + if (parts.length > 1) { + String fileName = parts[1]; + System.out.println("Reloading " + fileName + "..."); + scriptManager.reload(fileName); + } else { + System.out.println("Reloading all scripts..."); + scriptManager.reload(); + } + } else if (command.equalsIgnoreCase("stop")) { + MinecraftServer.stopCleanly(); + System.exit(0); + } + } + }).start(); + + System.out.println("Server starting on port 25565"); + System.out.println("Type 'reload' to reload all scripts, or 'reload ' for a specific file."); + + // Start the server + minecraftServer.start("0.0.0.0", 25565); + } +} diff --git a/src/main/java/net/jstom/script/ScriptApi.java b/src/main/java/net/jstom/script/ScriptApi.java new file mode 100644 index 0000000..73e1794 --- /dev/null +++ b/src/main/java/net/jstom/script/ScriptApi.java @@ -0,0 +1,67 @@ +package net.jstom.script; + +import net.minestom.server.MinecraftServer; +import net.minestom.server.event.Event; +import net.minestom.server.event.EventNode; +import org.graalvm.polyglot.Value; + +import java.util.ArrayList; +import java.util.List; +import java.util.function.Consumer; + +public class ScriptApi { + private final List> registeredNodes = new ArrayList<>(); + + /** + * Registers an event listener from JavaScript. + * Usage in JS: server.on('net.minestom.server.event.player.PlayerLoginEvent', (event) => { ... }); + */ + public void on(String eventClassName, Value callback) { + try { + Class clazz = Class.forName(eventClassName); + if (!Event.class.isAssignableFrom(clazz)) { + System.err.println("[JStom] Class " + eventClassName + " is not an Event."); + return; + } + + @SuppressWarnings("unchecked") + Class eventClass = (Class) clazz; + + // Create a node for this listener so we can easily remove it later + var node = EventNode.all("script-node-" + System.nanoTime()); + + node.addListener(eventClass, event -> { + // Execute JS callback + synchronized (callback) { + if (callback.canExecute()) { + try { + callback.executeVoid(event); + } catch (Exception e) { + System.err.println("[JStom] Error in JS event listener:"); + e.printStackTrace(); + } + } + } + }); + + MinecraftServer.getGlobalEventHandler().addChild(node); + registeredNodes.add(node); + System.out.println("[JStom] Registered listener for " + eventClass.getSimpleName()); + + } catch (ClassNotFoundException e) { + System.err.println("[JStom] Could not find event class: " + eventClassName); + } + } + + public void cleanup() { + System.out.println("[JStom] Cleaning up " + registeredNodes.size() + " event nodes..."); + for (var node : registeredNodes) { + MinecraftServer.getGlobalEventHandler().removeChild(node); + } + registeredNodes.clear(); + } + + public void log(String message) { + System.out.println("[JS] " + message); + } +} diff --git a/src/main/java/net/jstom/script/ScriptManager.java b/src/main/java/net/jstom/script/ScriptManager.java new file mode 100644 index 0000000..f2efcf4 --- /dev/null +++ b/src/main/java/net/jstom/script/ScriptManager.java @@ -0,0 +1,104 @@ +package net.jstom.script; + +import org.graalvm.polyglot.Context; +import org.graalvm.polyglot.HostAccess; +import org.graalvm.polyglot.Source; + +import java.io.File; +import java.io.IOException; +import java.util.HashMap; +import java.util.Map; + +public class ScriptManager { + private final File scriptsDir; + private final Map loadedScripts = new HashMap<>(); + + public ScriptManager(File scriptsDir) { + this.scriptsDir = scriptsDir; + } + + public void load() { + if (!scriptsDir.exists()) { + scriptsDir.mkdirs(); + } + + File[] files = scriptsDir.listFiles((dir, name) -> name.endsWith(".js")); + if (files != null) { + for (File file : files) { + loadScript(file); + } + } + } + + public void loadScript(File file) { + String fileName = file.getName(); + unloadScript(fileName); // Ensure clean slate if reloading + + System.out.println("[JStom] Loading script: " + fileName); + + ScriptApi api = new ScriptApi(); + Context context = Context.newBuilder("js") + .allowHostAccess(HostAccess.ALL) + .allowHostClassLookup(s -> true) + .allowIO(true) + .build(); + + context.getBindings("js").putMember("server", api); + + try { + context.eval(Source.newBuilder("js", file).build()); + loadedScripts.put(fileName, new ScriptEnv(context, api, file)); + } catch (IOException e) { + e.printStackTrace(); + } catch (Exception e) { + System.err.println("[JStom] Error executing script " + fileName); + e.printStackTrace(); + // Cleanup if failed + api.cleanup(); + context.close(); + } + } + + public void unloadScript(String fileName) { + ScriptEnv env = loadedScripts.remove(fileName); + if (env != null) { + env.api.cleanup(); + env.context.close(); + System.out.println("[JStom] Unloaded script: " + fileName); + } + } + + public void unload() { + // Copy keys to avoid ConcurrentModificationException + for (String fileName : new java.util.ArrayList<>(loadedScripts.keySet())) { + unloadScript(fileName); + } + } + + public void reload() { + unload(); + load(); + } + + public void reload(String fileName) { + File file = new File(scriptsDir, fileName); + if (file.exists()) { + loadScript(file); + } else { + System.err.println("[JStom] File not found: " + fileName); + } + } + + private static class ScriptEnv { + final Context context; + final ScriptApi api; + final File file; + + public ScriptEnv(Context context, ScriptApi api, File file) { + this.context = context; + this.api = api; + this.file = file; + } + } +} +