Question

Hey guys sorry for the noob question but I am having a hard time initializing my self created classes for an iphone game I’ve started making. Before I started actually developing my game I ran a quick test to see if what I have already would work, and the class that I was testing wouldn’t initialize. Here is what I have:

    @implementation Game
    SceneController *sceneController;

    +(id)scene {...} // just the default scene method created by cocos2d

    -(id)init{
        if((self=[super init])){
            [[sceneController performSelector:@selector(alloc)]performSelector:@selector(init)];
            CGSize size = [[CCDirector sharedDirector] winSize];
            CCLabelTTF *label=[CCLabelTTF labelWithString:[NSString stringWithFormat:@"%i",[sceneController performSelector:@selector(xxx)]] fontName:@"Marker Felt" fontSize:64];
            [self addChild: label];
        }
        return self;
    }


    // IN ANOTHER CLASS
    @implementation SceneController
    int xxx; // not a real variable just used for the test

    -(id)init{
        if((self=[super init])){
            xxx=432;
        }
        return self;
    }

    -(int)xxx{
        return xxx;
    }

My problem is that instead of the label reading 432 like it should it just says 0. Can anyone help me.

Answer 1

Looks like you haven’t contructed your SceneController object correctly.

In your init method of Game, you need to make a call like this:

sceneController = [[SceneController alloc] init];

instead of this:

[[sceneController performSelector:@selector(alloc)]performSelector:@selector(init)];

Then your sceneController instance variable is properly initialised and your init method will have been called.