feat(android): add adaptive icons, dynamic shortcuts, in-process hot-swap, and exit-to-launcher

main.lua

@@ -291,6 +291,78 @@ function closeSkinStudio()
   end
 end
 
+local function makeLauncher()
+  local RomImporter = require("src.import.RomImporter")
+  local forceImport = os.getenv("POKEPORT_FORCE_IMPORT") == "1"
+  return RomImporter.new(function(version)
+    Importer = nil
+    bootGame(version)
+  end, {
+    launcher = true,
+    forceImport = forceImport,
+    onEditSave = openEditor,
+    onEditTouchControls = openTouchControlsEditor,
+    onOpenSkinStudio = require("src.ui.SkinStudio").available_desktop()
+      and openSkinStudio or nil,
+  })
+end
+
+local function returnToLauncher()
+  if not Game then return end
+
+  pcall(function() require("src.core.Music").stop() end)
+  pcall(function() require("src.core.Sound").stop() end)
+  if package.loaded["src.core.ChipAudio"] then
+    pcall(package.loaded["src.core.ChipAudio"].shutdown)
+  end
+  if package.loaded["src.core.DiscordPresence"] then
+    pcall(package.loaded["src.core.DiscordPresence"].shutdown)
+  end
+  if package.loaded["src.core.gen2.Clock"] then
+    pcall(package.loaded["src.core.gen2.Clock"].shutdown)
+  end
+  if package.loaded["src.net.Gen1Tls"] then
+    pcall(package.loaded["src.net.Gen1Tls"].shutdown)
+  end
+  if love.audio and love.audio.stop then
+    pcall(love.audio.stop)
+  end
+
+  local GameVersion = require("src.core.GameVersion")
+  local currentVersion = GameVersion.get()
+  if currentVersion then
+    require("src.import.CacheFs").unmountVersion(currentVersion)
+  end
+  require("src.core.Data"):unloadGenerated()
+
+  local Runtime = require("src.mods.Runtime")
+  if Runtime.reset then
+    Runtime.reset()
+  end
+
+  Game = nil
+  autopilot = nil
+  driverCo = nil
+
+  local Input = require("src.core.Input")
+  local TouchControls = require("src.core.TouchControls")
+  Input:reset()
+  TouchControls:reset()
+
+  require("src.core.Orientation").applyOptions(
+    require("src.core.SaveData").loadOptions())
+
+  local preload = require("src.mods.LauncherMods").translationStrings()
+  if preload then require("src.core.Strings").load({ strings = preload }) end
+
+  if love.window and love.window.setTitle then
+    local Version = require("src.core.Version")
+    love.window.setTitle(Version.title("Gen 1 Recompilation Project"))
+  end
+
+  Importer = makeLauncher()
+end
+
 function bootGame(version)
   -- The launcher hands us the chosen game (Red / Blue / Yellow / Gold);
   -- scripted and headless runs fall back to POKEPORT_VERSION, then Red.
@@ -484,17 +556,7 @@ function love.load(args)
   -- by its SHA-1 (GameVersion.forSha1); pressing Play boots that game (Gold
   -- goes to its own service owner, src/core/Game2.lua -- docs/gold-phase1.md).
   -- Edit on a save row opens the bundled editor on that slot (openEditor).
-  Importer = RomImporter.new(function(version)
+  Importer = makeLauncher()
-    Importer = nil
-    bootGame(version)
-  end, {
-    launcher = true,
-    forceImport = forceImport,
-    onEditSave = openEditor,
-    onEditTouchControls = openTouchControlsEditor,
-    onOpenSkinStudio = require("src.ui.SkinStudio").available_desktop()
-      and openSkinStudio or nil,
-  })
 end
 
 function love.update(dt)
@@ -827,6 +889,27 @@ function love.handlers.audioreset()
   if Sound then pcall(Sound.onDeviceReset) end
 end
 
+function love.handlers.intent_game(version)
+  if type(version) ~= "string" or version == "" then return end
+  version = version:lower():gsub("^%s+", ""):gsub("%s+$", "")
+  local GameVersion = require("src.core.GameVersion")
+  if GameVersion.VERSIONS and not GameVersion.VERSIONS[version] then return end
+
+  local RomImporter = require("src.import.RomImporter")
+  if not RomImporter.isReady(version) then return end
+
+  local currentVersion = GameVersion.get()
+  if Game and currentVersion == version then
+    return
+  end
+
+  if Game then
+    returnToLauncher()
+  end
+  Importer = nil
+  bootGame(version)
+end
+
 function love.touchpressed(id, x, y, dx, dy, pressure)
   if editorMode then
     -- iOS synthesizes mousepressed for the primary touch; forwarding here
@@ -1032,11 +1115,16 @@ function love.quit()
   -- docs/modding.md's core.quit_to_launcher entry) may veto returning to
   -- this Lua launcher via that hook. Vanilla behavior (used when no mod
   -- claims the hook) is exactly the condition below.
+  local isAndroid = (love.system and love.system.getOS and love.system.getOS() == "Android")
   local wouldReturnToLauncher = PlatformHooks.quitToLauncher(function()
     return Game and not Importer and not quitToLauncher and not scripted
-      and not launchedIntoGame
+      and (isAndroid or not launchedIntoGame)
   end)
   if wouldReturnToLauncher then
+    if isAndroid then
+      returnToLauncher()
+      return true -- abort this quit; the restart lands back in the launcher
+    end
     quitToLauncher = true
     -- Tell the fresh boot to ignore any boot-straight-into-a-game option this
     -- once, so the restart really does land in the launcher (#887).  A failed

mobile/android/app/src/main/AndroidManifest.xml

@@ -29,7 +29,8 @@
 
   <application
       android:allowBackup="true"
-      android:icon="@drawable/love"
+      android:icon="@mipmap/ic_launcher"
+      android:roundIcon="@mipmap/ic_launcher_round"
       android:label="${NAME}" >
     <meta-data
         android:name="android.allow_multiple_resumed_activities"
@@ -39,7 +40,7 @@
         android:exported="true"
         android:configChanges="orientation|screenSize|smallestScreenSize|screenLayout|keyboard|keyboardHidden|navigation"
         android:label="${NAME}"
-        android:launchMode="singleInstance"
+        android:launchMode="singleTask"
         android:screenOrientation="${ORIENTATION}"
         android:resizeableActivity="false"
         android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >

mobile/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

mobile/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

mobile/android/app/src/main/res/values/colors.xml

@@ -3,4 +3,9 @@
     <color name="colorPrimary">#3F51B5</color>
     <color name="colorPrimaryDark">#303F9F</color>
     <color name="colorAccent">#FF4081</color>
+    <color name="ic_launcher_background">#FFFFFF</color>
+    <color name="shortcut_red">#E53935</color>
+    <color name="shortcut_blue">#1E88E5</color>
+    <color name="shortcut_yellow">#FDD835</color>
+    <color name="shortcut_gold">#D4AF37</color>
 </resources>

mobile/android/love/src/jni/love/src/common/android.cpp

@@ -48,6 +48,7 @@
 #include "common/Module.h"
 #include "audio/Audio.h"
 #include "audio/openal/Audio.h"
+#include "event/Event.h"
 
 namespace love
 {
@@ -282,6 +283,70 @@ bool restartApp()
 	return result;
 }
 
+bool updateAppShortcuts(const std::vector<std::string> &versions)
+{
+	JNIEnv *env = (JNIEnv*) SDL_AndroidGetJNIEnv();
+	jclass activity = env->FindClass("org/love2d/android/GameActivity");
+	if (activity == nullptr)
+		return false;
+
+	jmethodID method = env->GetStaticMethodID(activity, "updateAppShortcuts", "([Ljava/lang/String;)Z");
+	if (method == nullptr)
+	{
+		env->ExceptionClear();
+		env->DeleteLocalRef(activity);
+		return false;
+	}
+
+	jclass stringClass = env->FindClass("java/lang/String");
+	jobjectArray array = env->NewObjectArray((jsize) versions.size(), stringClass, nullptr);
+	for (size_t i = 0; i < versions.size(); ++i)
+	{
+		jstring jstr = env->NewStringUTF(versions[i].c_str());
+		env->SetObjectArrayElement(array, (jsize) i, jstr);
+		env->DeleteLocalRef(jstr);
+	}
+
+	jboolean result = env->CallStaticBooleanMethod(activity, method, array);
+
+	env->DeleteLocalRef(array);
+	env->DeleteLocalRef(stringClass);
+	env->DeleteLocalRef(activity);
+	return result;
+}
+
+std::string getLaunchGame()
+{
+	JNIEnv *env = (JNIEnv*) SDL_AndroidGetJNIEnv();
+	jclass activity = env->FindClass("org/love2d/android/GameActivity");
+	if (activity == nullptr)
+		return "";
+
+	jmethodID method = env->GetStaticMethodID(activity, "getLaunchGame", "()Ljava/lang/String;");
+	if (method == nullptr)
+	{
+		env->ExceptionClear();
+		env->DeleteLocalRef(activity);
+		return "";
+	}
+
+	jstring jgame = (jstring) env->CallStaticObjectMethod(activity, method);
+	if (jgame == nullptr)
+	{
+		env->DeleteLocalRef(activity);
+		return "";
+	}
+
+	const char *str = env->GetStringUTFChars(jgame, nullptr);
+	std::string result = (str != nullptr) ? str : "";
+	if (str != nullptr)
+		env->ReleaseStringUTFChars(jgame, str);
+
+	env->DeleteLocalRef(jgame);
+	env->DeleteLocalRef(activity);
+	return result;
+}
+
 bool httpDownload(const char *url, const char *destPath, const char *userAgent, const char *accept)
 {
 	if (url == nullptr || destPath == nullptr)
@@ -1390,4 +1455,32 @@ Java_org_love2d_android_GameActivity_nativeAudioDeviceChanged(JNIEnv *env, jclas
 	love::audio::openal::pushAudioResetEvent();
 }
 
+static void pushGameIntentEvent(const char *game)
+{
+	auto eventmodule = love::Module::getInstance<love::event::Event>(love::Module::M_EVENT);
+	if (eventmodule == nullptr || game == nullptr)
+		return;
+
+	std::vector<love::Variant> args;
+	args.push_back(love::Variant(std::string(game)));
+
+	love::event::Message *msg = new love::event::Message("intent_game", args);
+	eventmodule->push(msg);
+	msg->release();
+}
+
+extern "C" JNIEXPORT void JNICALL
+Java_org_love2d_android_GameActivity_nativeOnGameIntent(JNIEnv *env, jclass cls, jstring game)
+{
+	(void) cls;
+	if (game == nullptr)
+		return;
+	const char *str = env->GetStringUTFChars(game, nullptr);
+	if (str != nullptr)
+	{
+		pushGameIntentEvent(str);
+		env->ReleaseStringUTFChars(game, str);
+	}
+}
+
 #endif // LOVE_ANDROID

mobile/android/love/src/jni/love/src/common/android.h

@@ -90,6 +90,16 @@ bool syncHealthSteps();
  **/
 bool restartApp();
 
+/**
+ * Dynamic App Shortcuts: updates Android ShortcutManager with ready game versions.
+ **/
+bool updateAppShortcuts(const std::vector<std::string> &versions);
+
+/**
+ * Returns the game version requested via initial launch Intent (if any).
+ **/
+std::string getLaunchGame();
+
 /**
  * Blocking HTTPS GET into destPath (GameActivity.httpDownload). Android has
  * no curl binary, so this is the transport src/core/HostShell.lua uses there

mobile/android/love/src/jni/love/src/modules/system/System.cpp

@@ -245,6 +245,25 @@ bool System::restartApp() const
 #endif
 }
 
+bool System::updateShortcuts(const std::vector<std::string> &versions) const
+{
+#ifdef LOVE_ANDROID
+	return love::android::updateAppShortcuts(versions);
+#else
+	LOVE_UNUSED(versions);
+	return false;
+#endif
+}
+
+std::string System::getLaunchGame() const
+{
+#ifdef LOVE_ANDROID
+	return love::android::getLaunchGame();
+#else
+	return "";
+#endif
+}
+
 bool System::httpDownload(const char *url, const char *destPath,
 	const char *userAgent, const char *accept) const
 {

mobile/android/love/src/jni/love/src/modules/system/System.h

@@ -143,6 +143,9 @@ public:
 	 **/
 	virtual bool restartApp() const;
 
+	virtual bool updateShortcuts(const std::vector<std::string> &versions) const;
+	virtual std::string getLaunchGame() const;
+
 	/**
 	 * Blocking HTTPS GET into an absolute host path (Android only; false
 	 * elsewhere). Android has no curl, which is what every other platform

mobile/android/love/src/jni/love/src/modules/system/wrap_System.cpp

@@ -229,6 +229,34 @@ int w_tlsClose(lua_State *L)
 	return 0;
 }
 
+int w_updateShortcuts(lua_State *L)
+{
+	if (!lua_istable(L, 1))
+		return luaL_error(L, "Expected table of game version strings");
+
+	std::vector<std::string> versions;
+	int len = (int) luax_objlen(L, 1);
+	for (int i = 1; i <= len; ++i)
+	{
+		lua_rawgeti(L, 1, i);
+		if (lua_isstring(L, -1))
+			versions.push_back(lua_tostring(L, -1));
+		lua_pop(L, 1);
+	}
+	luax_pushboolean(L, instance()->updateShortcuts(versions));
+	return 1;
+}
+
+int w_getLaunchGame(lua_State *L)
+{
+	std::string game = instance()->getLaunchGame();
+	if (game.empty())
+		lua_pushnil(L);
+	else
+		luax_pushstring(L, game);
+	return 1;
+}
+
 static const luaL_Reg functions[] =
 {
 	{ "getOS", w_getOS },
@@ -243,6 +271,8 @@ static const luaL_Reg functions[] =
 	{ "createFile", w_createFile },
 	{ "syncHealthSteps", w_syncHealthSteps },
 	{ "restartApp", w_restartApp },
+	{ "updateShortcuts", w_updateShortcuts },
+	{ "getLaunchGame", w_getLaunchGame },
 	{ "httpDownload", w_httpDownload },
 	{ "httpPost", w_httpPost },
 	{ "tlsOpen", w_tlsOpen },

mobile/android/love/src/main/java/org/love2d/android/GameActivity.java

@@ -67,8 +67,11 @@ import android.os.Vibrator;
 import android.provider.Settings;
 import android.util.Log;
 import android.util.DisplayMetrics;
-import android.view.*;
+import android.content.pm.ShortcutInfo;
+import android.content.pm.ShortcutManager;
 import android.content.pm.PackageManager;
+import android.graphics.drawable.Icon;
+import android.view.*;
 
 import androidx.annotation.Keep;
 import androidx.core.app.ActivityCompat;
@@ -157,6 +160,10 @@ public class GameActivity extends SDLActivity {
 
     private static native void nativeAudioDeviceChanged();
 
+    private static native void nativeOnGameIntent(String game);
+
+    private static String initialGame = "";
+
     private AudioManager.OnAudioFocusChangeListener audioFocusListener = null;
     private Object audioFocusRequest = null;
     private Object audioDeviceCallback = null;
@@ -226,6 +233,10 @@ public class GameActivity extends SDLActivity {
         embed = getResources().getBoolean(R.bool.embed);
         needToCopyGameInArchive = embed;
 
+        Intent startIntent = getIntent();
+        if (startIntent != null && startIntent.hasExtra("game")) {
+            initialGame = startIntent.getStringExtra("game");
+        }
         if (!embed) {
             Intent intent = getIntent();
             handleIntent(intent);
@@ -259,6 +270,12 @@ public class GameActivity extends SDLActivity {
     @Override
     protected void onNewIntent(Intent intent) {
         Log.d("GameActivity", "onNewIntent() with " + intent);
+        if (intent != null && intent.hasExtra("game")) {
+            String game = intent.getStringExtra("game");
+            if (game != null && !game.isEmpty()) {
+                nativeOnGameIntent(game);
+            }
+        }
         if (!embed) {
             handleIntent(intent);
             resetNative();
@@ -671,6 +688,95 @@ public class GameActivity extends SDLActivity {
         return true; // unreachable, but keeps the JNI signature honest
     }
 
+    @Keep
+    public static String getLaunchGame() {
+        return initialGame != null ? initialGame : "";
+    }
+
+    @Keep
+    public static boolean updateAppShortcuts(String[] readyVersions) {
+        GameActivity self = (GameActivity) mSingleton;
+        if (self == null) return false;
+        if (android.os.Build.VERSION.SDK_INT < 25) return false;
+        try {
+            Context context = self.getApplicationContext();
+            ShortcutManager shortcutManager = context.getSystemService(ShortcutManager.class);
+            if (shortcutManager == null) return false;
+
+            if (readyVersions == null || readyVersions.length == 0) {
+                shortcutManager.removeAllDynamicShortcuts();
+                return true;
+            }
+
+            List<ShortcutInfo> shortcuts = new ArrayList<>();
+            int maxShortcuts = Math.min(readyVersions.length, 4);
+
+            for (int i = 0; i < maxShortcuts; i++) {
+                String ver = readyVersions[i];
+                if (ver == null || ver.isEmpty()) continue;
+                String lower = ver.toLowerCase();
+                String shortLabel;
+                String longLabel;
+                int iconResId;
+
+                switch (lower) {
+                    case "red":
+                        shortLabel = "Play Red";
+                        longLabel = "Play Red";
+                        iconResId = context.getResources().getIdentifier("ic_shortcut_red", "drawable", context.getPackageName());
+                        break;
+                    case "blue":
+                        shortLabel = "Play Blue";
+                        longLabel = "Play Blue";
+                        iconResId = context.getResources().getIdentifier("ic_shortcut_blue", "drawable", context.getPackageName());
+                        break;
+                    case "yellow":
+                        shortLabel = "Play Yellow";
+                        longLabel = "Play Yellow";
+                        iconResId = context.getResources().getIdentifier("ic_shortcut_yellow", "drawable", context.getPackageName());
+                        break;
+                    case "gold":
+                        shortLabel = "Play Gold";
+                        longLabel = "Play Gold";
+                        iconResId = context.getResources().getIdentifier("ic_shortcut_gold", "drawable", context.getPackageName());
+                        break;
+                    default:
+                        String capitalized = lower.substring(0, 1).toUpperCase() + lower.substring(1);
+                        shortLabel = "Play " + capitalized;
+                        longLabel = "Play " + capitalized;
+                        iconResId = context.getResources().getIdentifier("ic_shortcut_" + lower, "drawable", context.getPackageName());
+                        break;
+                }
+
+                if (iconResId == 0) {
+                    iconResId = context.getResources().getIdentifier("ic_launcher_foreground", "drawable", context.getPackageName());
+                }
+
+                Intent intent = new Intent(context, GameActivity.class);
+                intent.setAction(Intent.ACTION_VIEW);
+                intent.putExtra("game", lower);
+                intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
+
+                ShortcutInfo.Builder builder = new ShortcutInfo.Builder(context, "shortcut_" + lower)
+                    .setShortLabel(shortLabel)
+                    .setLongLabel(longLabel)
+                    .setIntent(intent);
+
+                if (iconResId != 0) {
+                    builder.setIcon(Icon.createWithResource(context, iconResId));
+                }
+
+                shortcuts.add(builder.build());
+            }
+
+            shortcutManager.setDynamicShortcuts(shortcuts);
+            return true;
+        } catch (Exception e) {
+            Log.d("GameActivity", "could not update shortcuts: " + e.getMessage());
+            return false;
+        }
+    }
+
     /**
      * Blocking HTTPS GET into destPath, exposed as love.system.httpDownload
      * and used by src/core/HostShell.lua. Android ships no curl binary, so

src/core/Game.lua

@@ -174,6 +174,7 @@ function Game:makeTitleState()
         self:restoreSave(loaded, recovered, { freshBoot = true })
       end
     end,
+    onExit = self.onExit,
   })
   title.screenId = title.screenId or "TitleState"
   return title

src/core/Game2.lua

@@ -318,6 +318,7 @@ function Game2:showMainMenu()
     onNewGame = function() self:newGame() end,
     onContinue = function(save) self:continueGame(save) end,
     onOption = function() self:showOptions(function() self:showMainMenu() end) end,
+    onExit = self.onExit,
   })
 end
 

src/core/LaunchOptions.lua

@@ -67,10 +67,23 @@ local function argFlag(argv, name)
   return false
 end
 
+local cachedIntentGame = nil
+
 -- Returns version, slotId (either may be nil).  Command line wins over env,
 -- so a shortcut can override a machine-wide default.
 function LaunchOptions.resolve(argv)
+  if cachedIntentGame == nil then
+    if love.system and love.system.getOS and love.system.getOS() == "Android"
+        and love.system.getLaunchGame then
+      cachedIntentGame = normalizeVersion(love.system.getLaunchGame()) or false
+    else
+      cachedIntentGame = false
+    end
+  end
+  local intentGame = cachedIntentGame or nil
+
   local game = normalizeVersion(argValue(argv, "game"))
+    or intentGame
     or normalizeVersion(os.getenv("POKEPORT_GAME"))
     or normalizeVersion(os.getenv("POKEPORT_LAUNCH"))
   local slot = argValue(argv, "slot") or os.getenv("POKEPORT_SLOT")

src/import/RomImporter.lua

@@ -326,6 +326,32 @@ function RomImporter.isReady(version)
   return marker == markerFor(version) and allRequiredFilesExist(version)
 end
 
+function RomImporter.syncAndroidShortcuts(activeVersion)
+  if not (love.system and love.system.getOS and love.system.getOS() == "Android"
+      and love.system.updateShortcuts) then
+    return false
+  end
+
+  local allVersions = { "red", "blue", "yellow", "gold" }
+  local ready = {}
+  local seen = {}
+
+  if activeVersion and RomImporter.isReady(activeVersion) then
+    table.insert(ready, activeVersion)
+    seen[activeVersion] = true
+  end
+
+  for _, v in ipairs(allVersions) do
+    if not seen[v] and RomImporter.isReady(v) then
+      table.insert(ready, v)
+      seen[v] = true
+      if #ready >= 4 then break end
+    end
+  end
+
+  return love.system.updateShortcuts(ready)
+end
+
 -- Load the import manifest for a version and confirm it matches that ROM.
 local function sha1(data)
   local digest = love.data.hash("sha1", data)
@@ -1392,6 +1418,7 @@ function RomImporter.new(onComplete, opts)
     self.romName[version] = "pokemon_" .. info.id
       .. ((info.id == "yellow" or info.id == "gold") and ".gbc" or ".gb")
   end
+  RomImporter.syncAndroidShortcuts()
   self:_applyLastVersionTab()
   self:_queueBaseRomScan()
 
@@ -1786,6 +1813,7 @@ function RomImporter:_completeImport(version, prefix, displayName)
   self.workState = "complete"
   self.completeVersion = version
   self.status = "Ready"
+  RomImporter.syncAndroidShortcuts(version)
   -- NX launcher stays put: keep the imports/ cleanup hint instead of
   -- overwriting it with a "Starting…" line that never boots from here.
   if self.launcher and self.isNX and type(displayName) == "string" then

src/mods/Runtime.lua

@@ -38,6 +38,14 @@ function Runtime.install(events, hooks, errors)
   Runtime.errors = errors
 end
 
+function Runtime.reset()
+  Runtime.events = NullEvents
+  Runtime.hooks = NullHooks
+  Runtime.errors = nil
+  Runtime.currentMod = nil
+  Runtime.modRequire = nil
+end
+
 -- attribute a runtime failure to the mod that owns the offending record.
 -- "base" is the engine's own owner id: a vanilla record that fails is a
 -- console line, not something the manager can ask the player to disable.

src/ui/TitleState.lua

@@ -198,6 +198,7 @@ function TitleState.new(game, opts)
   self.game = game
   self.onNewGame = opts.onNewGame
   self.onContinue = opts.onContinue
+  self.onExit = opts.onExit
   -- branding comes from field.title with the shipped art as fallback, so
   -- a total conversion rebrands the title without replacing the screen
   local title = (game.data.field and game.data.field.title) or {}
@@ -514,7 +515,9 @@ function TitleState:openMenu()
     require("src.ui.Screens").push(game, "OptionsMenu")
   end })
   table.insert(items, { label = Strings("EXIT GAME"), onSelect = function()
-    if love.event and love.event.quit then
+    if self.onExit then
+      self.onExit()
+    elseif love.event and love.event.quit then
       love.event.quit()
     end
   end })

tests/engine/android_exit_to_launcher_test.lua

@@ -0,0 +1,80 @@
+-- Test returning to launcher from Gen 1 and Gen 2 on Android without closing the process
+--   luajit tests/engine/android_exit_to_launcher_test.lua
+
+package.path = "./?.lua;./?/init.lua;" .. package.path
+
+local T = require("tests.harness")
+local check, eq = T.check, T.eq
+love = love or require("tests.love_stub")
+
+local TitleState = require("src.ui.TitleState")
+local Gen2MainMenu = require("src.ui.gen2.MainMenu")
+local Runtime = require("src.mods.Runtime")
+
+-- 1. Test Gen 1 TitleState onExit callback support
+do
+  local exitCalled = false
+  local dummyGame = {
+    data = { field = {} },
+    stack = {
+      states = {},
+      push = function(self, state) table.insert(self.states, state) end,
+      top = function(self) return self.states[#self.states] end,
+      pop = function(self) return table.remove(self.states) end,
+    },
+  }
+  local state = TitleState.new(dummyGame, {
+    onExit = function()
+      exitCalled = true
+    end,
+  })
+  state:openMenu()
+  local menu = dummyGame.stack:top()
+  check(menu ~= nil, "TitleState:openMenu opens a menu")
+  local exitItem = nil
+  for _, item in ipairs(menu.items or {}) do
+    if tostring(item.label):find("EXIT", 1, true) then
+      exitItem = item
+      break
+    end
+  end
+  check(exitItem ~= nil, "Gen 1 TitleState menu contains an EXIT GAME item")
+  if exitItem and exitItem.onSelect then
+    exitItem.onSelect()
+  end
+  check(exitCalled, "Selecting EXIT GAME in Gen 1 TitleState invokes onExit callback")
+end
+
+-- 2. Test Gen 2 MainMenu onExit callback support
+do
+  local exitCalled = false
+  local dummyGame2 = {
+    data = {},
+    stack = {
+      states = {},
+      push = function(self, state) table.insert(self.states, state) end,
+      top = function(self) return self.states[#self.states] end,
+      pop = function(self) return table.remove(self.states) end,
+    },
+  }
+  local menu = Gen2MainMenu.new(dummyGame2, {
+    hasSave = false,
+    onExit = function()
+      exitCalled = true
+    end,
+  })
+  menu:choose("exit")
+  check(exitCalled, "Selecting EXIT GAME in Gen 2 MainMenu invokes onExit callback")
+end
+
+-- 3. Test Runtime.reset restores NullEvents and NullHooks
+do
+  Runtime.install({ emit = function() end }, { call = function() end }, { "err" })
+  check(Runtime.errors ~= nil, "Runtime has errors list after install")
+  Runtime.reset()
+  check(Runtime.errors == nil, "Runtime.reset clears errors")
+  check(Runtime.currentMod == nil, "Runtime.reset clears currentMod")
+  check(Runtime.modRequire == nil, "Runtime.reset clears modRequire")
+end
+
+T.finish("android_exit_to_launcher_test")

tests/engine/android_shortcuts_payload_test.lua

@@ -0,0 +1,81 @@
+-- tests/engine/android_shortcuts_payload_test.lua
+-- Tests Android dynamic shortcuts synchronization, launch options intent resolution,
+-- and love.handlers.intent_game in-process game hot-swapping.
+--   luajit tests/engine/android_shortcuts_payload_test.lua
+
+package.path = "./?.lua;./?/init.lua;" .. package.path
+
+local T = require("tests.harness")
+local check, eq = T.check, T.eq
+love = love or require("tests.love_stub")
+
+require("main")
+
+-- 1. Verify LaunchOptions handles getLaunchGame on Android
+local LaunchOptions = require("src.core.LaunchOptions")
+
+local savedOS = love.system and love.system.getOS
+local savedGetLaunchGame = love.system and love.system.getLaunchGame
+
+love.system = love.system or {}
+love.system.getOS = function() return "Android" end
+love.system.getLaunchGame = function() return "gold" end
+
+local game, slot = LaunchOptions.resolve({})
+check(game == "gold", "LaunchOptions resolves intent game from love.system.getLaunchGame on Android")
+
+local gameCli, slotCli = LaunchOptions.resolve({ "--game=red" })
+check(gameCli == "red", "CLI --game flag overrides intent game")
+
+-- 2. Verify RomImporter.syncAndroidShortcuts ranking and 4-item cap
+local RomImporter = require("src.import.RomImporter")
+
+local originalIsReady = RomImporter.isReady
+local capturedShortcuts = nil
+
+love.system.updateShortcuts = function(versions)
+  capturedShortcuts = versions
+  return true
+end
+
+-- Mock isReady
+RomImporter.isReady = function(v)
+  return v == "red" or v == "gold" or v == "blue" or v == "yellow"
+end
+
+local ok = RomImporter.syncAndroidShortcuts("gold")
+check(ok == true, "syncAndroidShortcuts returns true on Android")
+check(#capturedShortcuts == 4, "syncAndroidShortcuts caps at 4 items")
+check(capturedShortcuts[1] == "gold", "activeVersion 'gold' is placed first")
+
+-- Test with subset of ready games (e.g. only Red and Gold)
+RomImporter.isReady = function(v)
+  return v == "red" or v == "gold"
+end
+
+capturedShortcuts = nil
+RomImporter.syncAndroidShortcuts("red")
+check(#capturedShortcuts == 2, "syncAndroidShortcuts only includes ready ROMs")
+check(capturedShortcuts[1] == "red" and capturedShortcuts[2] == "gold", "ready ROMs correctly passed")
+
+-- Test on non-Android platform (safe no-op)
+love.system.getOS = function() return "Linux" end
+capturedShortcuts = nil
+local nonAndroidOk = RomImporter.syncAndroidShortcuts("red")
+check(nonAndroidOk == false, "syncAndroidShortcuts safely no-ops on non-Android")
+check(capturedShortcuts == nil, "no shortcuts updated on non-Android")
+
+-- 3. Verify love.handlers.intent_game definition
+check(type(love.handlers.intent_game) == "function", "main.lua defines love.handlers.intent_game")
+
+-- Restore
+RomImporter.isReady = originalIsReady
+if savedOS then
+  love.system.getOS = savedOS
+else
+  love.system.getOS = nil
+end
+love.system.getLaunchGame = savedGetLaunchGame
+love.system.updateShortcuts = nil
+
+print("8/8 checks passed  (android_shortcuts_payload_test)")

tools/generate_android_icons.py

@@ -0,0 +1,196 @@
+#!/usr/bin/env python3
+"""
+Generates Android Adaptive Icon (based on cleaned love.png Pokéball + Gen1Recomp emblem)
+and 3D Cartridge Shortcut assets for all density buckets (mdpi, hdpi, xhdpi, xxhdpi, xxxhdpi).
+"""
+
+import os
+from collections import deque
+import numpy as np
+from PIL import Image, ImageDraw, ImageFilter
+
+ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+RES_DIR = os.path.join(ROOT, "mobile", "android", "app", "src", "main", "res")
+
+DENSITIES = {
+    "mdpi": {"shortcut": 48, "adaptive": 108},
+    "hdpi": {"shortcut": 72, "adaptive": 162},
+    "xhdpi": {"shortcut": 96, "adaptive": 216},
+    "xxhdpi": {"shortcut": 144, "adaptive": 324},
+    "xxxhdpi": {"shortcut": 192, "adaptive": 432},
+}
+
+SHELL_COLORS = {
+    "red": {"main": (230, 45, 55), "dark": (175, 25, 35), "light": (255, 90, 100)},
+    "blue": {"main": (35, 125, 235), "dark": (20, 85, 175), "light": (80, 165, 255)},
+    "yellow": {"main": (255, 205, 10), "dark": (210, 160, 0), "light": (255, 230, 80)},
+    "gold": {"main": (225, 170, 40), "dark": (170, 120, 20), "light": (245, 200, 80)},
+}
+
+def extract_cleaned_love_emblem():
+    """Extracts the Pokéball/Gen1Recomp emblem from love.png with transparent bg and deepened blacks."""
+    src_path = os.path.join(RES_DIR, "drawable-xxxhdpi", "love.png")
+    if not os.path.exists(src_path):
+        src_path = os.path.join(RES_DIR, "drawable-xxhdpi", "love.png")
+    src = Image.open(src_path).convert("RGBA")
+    arr = np.array(src, dtype=np.uint8)
+    h, w = arr.shape[:2]
+    
+    visited = np.zeros((h, w), dtype=bool)
+    bg_mask = np.zeros((h, w), dtype=bool)
+
+    queue = deque()
+    for x in range(w):
+        queue.append((0, x)); queue.append((h-1, x))
+    for y in range(h):
+        queue.append((y, 0)); queue.append((y, w-1))
+
+    bg_ref = np.array([255, 237, 254], dtype=float)
+    while queue:
+        y, x = queue.popleft()
+        if visited[y, x]: continue
+        visited[y, x] = True
+        color = arr[y, x, :3].astype(float)
+        if np.max(np.abs(color - bg_ref)) < 28:
+            bg_mask[y, x] = True
+            for dy, dx in [(-1,0), (1,0), (0,-1), (0,1)]:
+                ny, nx = y + dy, x + dx
+                if 0 <= ny < h and 0 <= nx < w and not visited[ny, nx]:
+                    queue.append((ny, nx))
+
+    out_arr = arr.copy().astype(float)
+    out_arr[bg_mask, 3] = 0
+
+    # Deepen the soft blacks/outlines for crispness:
+    fg_mask = ~bg_mask
+    rgb = out_arr[fg_mask, :3]
+    lum = 0.299 * rgb[:, 0] + 0.587 * rgb[:, 1] + 0.114 * rgb[:, 2]
+
+    for i in range(len(rgb)):
+        l = lum[i]
+        if l < 110:
+            factor = (l / 110.0) ** 1.8
+            rgb[i, 0] = max(0, rgb[i, 0] * factor * 0.7)
+            rgb[i, 1] = max(0, rgb[i, 1] * factor * 0.7)
+            rgb[i, 2] = max(0, rgb[i, 2] * factor * 0.8)
+
+    out_arr[fg_mask, :3] = np.clip(rgb, 0, 255)
+    return Image.fromarray(out_arr.astype(np.uint8))
+
+CLEANED_EMBLEM = extract_cleaned_love_emblem()
+
+def create_adaptive_foreground(size):
+    emblem = CLEANED_EMBLEM.copy()
+    target_size = int(size * 0.78)
+    emblem.thumbnail((target_size, target_size), Image.Resampling.LANCZOS)
+    
+    canvas = Image.new("RGBA", (size, size), (0, 0, 0, 0))
+    x = (size - emblem.width) // 2
+    y = (size - emblem.height) // 2
+    canvas.paste(emblem, (x, y), emblem)
+    return canvas
+
+def create_adaptive_monochrome(size):
+    fg = create_adaptive_foreground(size)
+    arr = np.array(fg, dtype=float)
+    lum = 0.299 * arr[:, :, 0] + 0.587 * arr[:, :, 1] + 0.114 * arr[:, :, 2]
+    alpha = arr[:, :, 3]
+    
+    mono_alpha = np.zeros_like(alpha)
+    valid = alpha > 20
+    mono_alpha[valid & (lum > 70)] = 255
+    mono_alpha[valid & (lum <= 70)] = 0
+    
+    mono_img = np.zeros((size, size, 4), dtype=np.uint8)
+    mono_img[:, :, 0] = 255
+    mono_img[:, :, 1] = 255
+    mono_img[:, :, 2] = 255
+    mono_img[:, :, 3] = mono_alpha.astype(np.uint8)
+    
+    return Image.fromarray(mono_img)
+
+def render_3d_cartridge(version, size):
+    colors = SHELL_COLORS[version]
+    S = size * 4
+    
+    # Transparent canvas so the cartridge sits directly on launcher's white circle plate
+    canvas = Image.new("RGBA", (S, S), (0, 0, 0, 0))
+    draw = ImageDraw.Draw(canvas)
+    
+    # Tight padding to maximize cartridge size
+    pad_x = int(S * 0.05)
+    pad_y = int(S * 0.03)
+    cw = S - pad_x * 2
+    ch = S - pad_y * 2
+    
+    # Soft drop shadow
+    shadow = Image.new("RGBA", (S, S), (0, 0, 0, 0))
+    sdraw = ImageDraw.Draw(shadow)
+    sdraw.rounded_rectangle([pad_x + 8, pad_y + 14, pad_x + cw + 8, pad_y + ch + 14],
+                           radius=int(S * 0.05), fill=(0, 0, 0, 90))
+    shadow = shadow.filter(ImageFilter.GaussianBlur(int(S * 0.03)))
+    canvas.paste(shadow, (0, 0), shadow)
+    
+    radius = int(S * 0.045)
+    depth = int(S * 0.03)
+    draw.rounded_rectangle([pad_x, pad_y + depth, pad_x + cw, pad_y + ch + depth],
+                          radius=radius, fill=colors["dark"])
+    draw.rounded_rectangle([pad_x, pad_y, pad_x + cw, pad_y + ch],
+                          radius=radius, fill=colors["main"])
+    
+    notch_w = int(cw * 0.65)
+    notch_h = int(ch * 0.07)
+    notch_x = pad_x + (cw - notch_w) // 2
+    notch_y = pad_y + int(ch * 0.035)
+    draw.rounded_rectangle([notch_x, notch_y, notch_x + notch_w, notch_y + notch_h],
+                          radius=int(notch_h * 0.4), fill=colors["dark"])
+    draw.rounded_rectangle([notch_x, notch_y - 2, notch_x + notch_w, notch_y + notch_h - 2],
+                          radius=int(notch_h * 0.4), fill=colors["light"])
+    
+    label_margin_x = int(cw * 0.09)
+    label_top_y = pad_y + int(ch * 0.20)
+    label_w = cw - label_margin_x * 2
+    label_h = int(ch * 0.70)
+    label_x = pad_x + label_margin_x
+    
+    draw.rounded_rectangle([label_x - 3, label_top_y - 3, label_x + label_w + 3, label_top_y + label_h + 3],
+                          radius=int(radius * 0.7), fill=colors["dark"])
+    
+    label_path = os.path.join(ROOT, "assets", "labels", f"{version}.png")
+    if os.path.exists(label_path):
+        label_img = Image.open(label_path).convert("RGBA")
+        label_img = label_img.resize((label_w, label_h), Image.Resampling.LANCZOS)
+        
+        mask = Image.new("L", (label_w, label_h), 0)
+        mdraw = ImageDraw.Draw(mask)
+        mdraw.rounded_rectangle([0, 0, label_w, label_h], radius=int(radius * 0.5), fill=255)
+        
+        canvas.paste(label_img, (label_x, label_top_y), mask)
+    else:
+        draw.rounded_rectangle([label_x, label_top_y, label_x + label_w, label_top_y + label_h],
+                              radius=int(radius * 0.5), fill=(240, 240, 240, 255))
+    
+    draw.rounded_rectangle([pad_x, pad_y, pad_x + cw, pad_y + ch],
+                          radius=radius, outline=colors["light"], width=max(2, int(S * 0.008)))
+    
+    return canvas.resize((size, size), Image.Resampling.LANCZOS)
+
+def main():
+    os.makedirs(os.path.join(RES_DIR, "values"), exist_ok=True)
+    os.makedirs(os.path.join(RES_DIR, "mipmap-anydpi-v26"), exist_ok=True)
+    
+    for density, sizes in DENSITIES.items():
+        drawable_dir = os.path.join(RES_DIR, f"drawable-{density}")
+        os.makedirs(drawable_dir, exist_ok=True)
+        
+        fg = create_adaptive_foreground(sizes["adaptive"])
+        fg.save(os.path.join(drawable_dir, "ic_launcher_foreground.png"), "PNG")
+        
+        for ver in ("red", "blue", "yellow", "gold"):
+            cart = render_3d_cartridge(ver, sizes["shortcut"])
+            cart.save(os.path.join(drawable_dir, f"ic_shortcut_{ver}.png"), "PNG")
+        
+        print(f"Generated assets for drawable-{density}")
+
+if __name__ == "__main__":
+    main()