Merge pull request #1546 from 1Jamie/feat/android-exit-game-to-launcher

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

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)
@@ -1488,4 +1553,32 @@ 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

@@ -283,6 +283,34 @@ 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 },
@@ -297,6 +325,8 @@ 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 },
 	{ "httpRequest", w_httpRequest },