cocos2D iOS tutorial 3

Tutorial 3A: Game Object

GameObject are the screen objects found in our game. They can be player, enemies, gold coins, obstacles, exits and so on.

At this stage, your game object will probably be a CCSprite with no other information. Nevertheless, you should put the CCSprite class into a GameObject class and add some other variables like float speed, int type, bool active, etc.

Tutorial 3B: Game Object Manager

Multiple instances (e.g. 30x) of GameObject class (inherit from CCNode) should be pre-allocated and store in a Game Object Manager (ObjectManager) class, using an NSMutableArray. Every time you need a GameObject, simply request one from ObjectManager, i.e. [om getObjectOfType:type]. This is to move the object allocation task from runtime to load time.

In the scene, let’s assume you have 3 buttons on the screen. Touching each button will get the object of a corresponding type from the object manager, add it to the scene and move it. The object will drop from the top to the bottom of the screen at a random speed. 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