Adapt Android mobile controls and native client UI

android-native/app/src/main/java/org/metin2port/client/MainActivity.java

@@ -1,6 +1,13 @@
 package org.metin2port.client;
 
 import android.content.Intent;
+import android.content.pm.ActivityInfo;
+import android.os.Build;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.view.WindowInsets;
+import android.view.WindowInsetsController;
 
 import org.libsdl.app.SDLActivity;
 
@@ -11,6 +18,47 @@ import org.libsdl.app.SDLActivity;
  * Without arguments the client runs against the in-process fake server once Client/ is in files/.
  */
 public class MainActivity extends SDLActivity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
+        applyImmersiveMode();
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        applyImmersiveMode();
+    }
+
+    @Override
+    public void onWindowFocusChanged(boolean hasFocus) {
+        super.onWindowFocusChanged(hasFocus);
+        if (hasFocus)
+            applyImmersiveMode();
+    }
+
+    private void applyImmersiveMode() {
+        final View decor = getWindow().getDecorView();
+        decor.setSystemUiVisibility(
+            View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY |
+            View.SYSTEM_UI_FLAG_FULLSCREEN |
+            View.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
+            View.SYSTEM_UI_FLAG_LAYOUT_STABLE |
+            View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN |
+            View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            getWindow().setDecorFitsSystemWindows(false);
+            final WindowInsetsController controller = getWindow().getInsetsController();
+            if (controller != null) {
+                controller.hide(WindowInsets.Type.systemBars());
+                controller.setSystemBarsBehavior(
+                    WindowInsetsController.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);
+            }
+        }
+    }
+
     @Override
     protected String[] getLibraries() {
         return new String[] { "SDL3", "main" };
@@ -20,8 +68,15 @@ public class MainActivity extends SDLActivity {
     protected String[] getArguments() {
         Intent intent = getIntent();
         String args = intent != null ? intent.getStringExtra("args") : null;
+        Log.i("Metin2Args", "native args: " + args);
         if (args == null || args.trim().isEmpty())
             return new String[0];
         return args.trim().split("\\s+");
     }
+
+    @Override
+    public void setOrientationBis(int w, int h, boolean resizable, String hint) {
+        // Enforce landscape-only on mobile devices (sensorLandscape allows flipping 180 deg but never portrait).
+        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
+    }
 }