Handling input manually like in the previous recipe gives us the opportunity to manage touchable objects at a high level. Using an array of sprites sorted by Z order we can "swallow the input" so that background sprites aren't affected.
Execute the following code:
#import "ColorTouchSprite.h"
@implementation Ch2_DepthTestingInput
-(CCLayer*) runRecipe {
//Init the ColorTouchSprites
[self initSprites];
return self;
}
-(void) initSprites {
sprites = [[NSMutableArray alloc] init];
//We add 10 randomly colored sprites
for(int x=0; x<10; x++){
CCSprite *sprite = [ColorTouchSprite spriteWithFile:@"blank.png"];
/* CODE OMITTED */
}
}
/* Process touch events */
-(void) ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
CGPoint point = [touch locationInView: [touch view]];
point = [...