Control instances of specific CCSprites with separate class file in Cocos2d

Question

I have just started working on my first cocos2d ios app.

I am very used to creating games in Game Maker, in which everything is simpler, and would like some help on creating separate .m/.h class files that contains functions that will affect all instances of a specific CCSprite. Obviously different class files for different CCSprites are needed.

In game maker, objects have code applied to them, and when i want something to happen when an instance is created its pretty easy, by just adding code to the create event.

In xcode i can't think how to do this.

Answer 1

One way to go would be to subclass CCSprite. Check out this guide for more info:

http://www.cocos2d-iphone.org/wiki/doku.php/prog_guide:sprites

Separate classes may also not be necessary, consider just having different initiators. Here is an example of a CCSprite subclass that can make both minions and evil rabbits:

BadGuySprite *minion = [[BadGuySprite alloc] initAMinion];
BadGuySprite *evilRabbit = [[BadGuySprite alloc] initAEvilRabbit];

BadGuySprite.h

#import "cocosd.h"

@interface BadGuySprite: CCSprite
{
   int lifebar;
}

+(id) initAMinion;
+(id) initAEvilRabbit;

@end

BadGuySprite.m

#import "BadGuySprite.h"

@implementation BadGuySprite

- (id)initAMinion{
        self = [CCSprite spriteWithFile:@"minion.png"];
        lifebar = 1000;
        return self;
}
- (id)initAEvilRabbit{
        self = [CCSprite spriteWithFile:@"rabbit.png"];
        lifebar = 1;
        return self;
    }

@end