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Pass mainclass and gameargs to the main game via system properties (#3692)

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TheKodeToad 2025-04-28 09:47:25 +01:00 • committed by GitHub
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libraries/launcher/org/prismlauncher/launcher/impl/StandardLauncher.java
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@ -97,6 +97,19 @@ public final class StandardLauncher extends AbstractLauncher {
gameArgs.add(worldName);
}
StringBuilder joinedGameArgs = new StringBuilder();
for (String gameArg : gameArgs) {
if (joinedGameArgs.length() > 0) {
joinedGameArgs.append('\u001F'); // unit separator, designed for this purpose
}
joinedGameArgs.append(gameArg);
}
// pass the real main class and game arguments in so mods can access them
System.setProperty("org.prismlauncher.launch.mainclass", mainClassName);
// unit separator ('\u001F') delimited list of game args
System.setProperty("org.prismlauncher.launch.gameargs", joinedGameArgs.toString());
// find and invoke the main method
MethodHandle method = ReflectionUtils.findMainMethod(mainClassName);
method.invokeExact(gameArgs.toArray(new String[0]));