better back button handling and exit game

src/android/app/src/main/cpp/NativeEmulation.cpp

@@ -267,3 +267,9 @@ Java_com_izzy2lost_weeu_nativeinterface_NativeEmulation_startGame([[maybe_unused
 	NativeEmulation::initializeAudioDevices();
 	return NativeEmulation::startGame(JNIUtils::toString(env, launchPath));
 }
+
+extern "C" [[maybe_unused]] JNIEXPORT void JNICALL
+Java_com_izzy2lost_weeu_nativeinterface_NativeEmulation_stopGame([[maybe_unused]] JNIEnv* env, [[maybe_unused]] jclass clazz)
+{
+	CafeSystem::ShutdownTitle();
+}

src/android/app/src/main/java/com/izzy2lost/weeu/MainActivity.kt

@@ -9,6 +9,7 @@ import android.os.Bundle
 import android.provider.DocumentsContract
 import android.widget.Toast
 import androidx.activity.ComponentActivity
+import androidx.activity.OnBackPressedCallback
 import androidx.activity.compose.setContent
 import androidx.compose.animation.EnterTransition
 import androidx.compose.animation.ExitTransition
@@ -76,6 +77,23 @@ class MainActivity : ComponentActivity() {
                 }
             }
         }
+        
+        onBackPressedDispatcher.addCallback(this, object : OnBackPressedCallback(true) {
+            override fun handleOnBackPressed() {
+                showExitConfirmationDialog()
+            }
+        })
+    }
+    
+    private fun showExitConfirmationDialog() {
+        androidx.appcompat.app.AlertDialog.Builder(this)
+            .setTitle(tr("Exit"))
+            .setMessage(tr("Do you want to exit the app?"))
+            .setPositiveButton(tr("Yes")) { _, _ ->
+                finish()
+            }
+            .setNegativeButton(tr("No"), null)
+            .show()
     }
 
     override fun onDestroy() {

src/android/app/src/main/java/com/izzy2lost/weeu/emulation/EmulationActivity.kt

@@ -257,7 +257,10 @@ class EmulationActivity : AppCompatActivity() {
             onClick = inputOverlaySurfaceView::resetInputs
         )
 
-        exitMenuItem.configure(tr("Exit"), onClick = ::showExitConfirmationDialog)
+        exitMenuItem.configure(tr("Exit"), onClick = {
+            NativeEmulation.stopGame()
+            finish()
+        })
     }
 
     private fun initializeView(launchPath: String) {

src/android/app/src/main/java/com/izzy2lost/weeu/nativeinterface/NativeEmulation.kt

@@ -40,4 +40,7 @@ object NativeEmulation {
 
     @JvmStatic
     external fun supportsLoadingCustomDriver(): Boolean
+
+    @JvmStatic
+    external fun stopGame()
 }