[FEATURE] Add flag DONT_ADD_YOURSELF_TO_CLASSPATH_PROPERTY

Author: gravit0

components/launcher-api/src/main/java/pro/gravit/launcher/base/profiles/ClientProfile.java

@@ -423,7 +423,7 @@ public enum ClassLoaderConfig {
     }
 
     public enum CompatibilityFlags {
-        LEGACY_NATIVES_DIR, CLASS_CONTROL_API, ENABLE_HACKS, WAYLAND_USE_CUSTOM_GLFW
+        LEGACY_NATIVES_DIR, CLASS_CONTROL_API, ENABLE_HACKS, WAYLAND_USE_CUSTOM_GLFW, DONT_ADD_YOURSELF_TO_CLASSPATH_PROPERTY
     }
 
     public static class Version implements Comparable<Version> {

components/launcher-client/src/main/java/pro/gravit/launcher/client/ClientLauncherEntryPoint.java

@@ -190,6 +190,12 @@ private static void realMain(String[] args) throws Throwable {
             ClientService.baseURLs = classLoaderControl.getURLs();
         } else if (classLoaderConfig == ClientProfile.ClassLoaderConfig.SYSTEM_ARGS) {
             launch = new BasicLaunch();
+            if(profile.hasFlag(ClientProfile.CompatibilityFlags.DONT_ADD_YOURSELF_TO_CLASSPATH_PROPERTY)) {
+                List<String> split = new ArrayList<>(List.of(System.getProperty("java.class.path").split(File.pathSeparator)));
+                String pathToLauncher = IOHelper.getCodeSource(ClientLauncherEntryPoint.class).toAbsolutePath().toString();
+                split.removeIf(e -> e.equals(pathToLauncher));
+                System.setProperty("java.class.path", String.join(File.pathSeparator, split));
+            }
             classLoaderControl = launch.init(classpath, params.nativesDir, options);
             ClientService.baseURLs = classpathURLs.toArray(new URL[0]);
         } else {