We first need to make sure the layer in question can only be instantiated once.
The
scenestatic method inGameLayerlooks like this:Scene* GameLayer::scene(int level, int levelsCompleted) { // 'scene' is an autorelease object auto scene = Scene::create(); // add layer as a child to scene scene->addChild(GameLayer::create(level, levelsCompleted)); return scene; }This layer receives two parameters when created: the game level it should load and the number of levels completed by the player. We create a new
Sceneobject and addGameLayeras its child.But take a look at the static
createmethod inGameLayer:GameLayer * GameLayer::create (int level, int levelsCompleted) { if (!_instance) { _instance = new GameLayer(); } else { _instance->clearLayer(); } _instance->setLevelsCompleted(levelsCompleted); _instance->loadLevel(level); _instance->scheduleUpdate...