Question

In my test game i have some sprites (Bubbles = NSMutableArray) wich are appear in random location at bottom of the screen.

I have addBubble and spawBubble methods:

- (void) addBubble {

CGSize winSize = [[CCDirector sharedDirector] winSize]; 
bubbles = [[NSMutableArray alloc] init];

[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"bubbleSpriteList.plist"];
CCSpriteBatchNode *bubbleSpriteList = [CCSpriteBatchNode batchNodeWithFile:@"bubbleSpriteList.png"];
[self addChild:bubbleSpriteList];



bigBubble = [CCSprite spriteWithSpriteFrameName:@"bubble"];
[self addChild:bigBubble];
[bubbles addObject:bigBubble];


for (CCSprite *bubble in bubbles) {


    int minX = bubble.contentSize.width/2;
    int maxX = winSize.width-bubble.contentSize.width/2;
    int rangeX = maxX - minX;
    int actualX = (arc4random() % rangeX) + minX;
    bubble.position = ccp(actualX, 0);


    int minSpeed = 15.0;
    int maxSpeed = 20.0;
    int rangeSpeed = maxSpeed - minSpeed;
    int actualSpeed = (arc4random() % rangeSpeed) + minSpeed;


    ccBezierConfig bubblePath;
    bubblePath.controlPoint_1 = ccp(200, winSize.height/3);
    bubblePath.controlPoint_2 = ccp(-200, winSize.height/1.5);
    bubblePath.endPosition = ccp(0, winSize.height+bubble.contentSize.height/2);
    id bezierMove = [CCBezierBy actionWithDuration:actualSpeed bezier:bubblePath];

    [bubble runAction:bezierMove]; 
}}
-(void)spawBubble:(ccTime)dt {
[self addBubble];}

Then in my init method i added background and spawBubble method with random time interval

[self schedule:@selector(spawBubble:) interval:actualTime];

---

I’m trying to make every bubble from Bubbles blow, when it was touched, with this code

- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event {
CGPoint touchLocation = [touch locationInView:[touch view]];
touchLocation = [[CCDirector sharedDirector] convertToGL:touchLocation];
touchLocation = [self convertToNodeSpace:touchLocation];

- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event {
CGPoint touchLocation = [touch locationInView:[touch view]];
touchLocation = [[CCDirector sharedDirector] convertToGL:touchLocation];
touchLocation = [self convertToNodeSpace:touchLocation];

for (CCSprite *bubble in bubbles) {
CGRect bubbleRect = CGRectMake(bubble.position.x - (bubble.contentSize.width/2), 
                                   bubble.position.y - (bubble.contentSize.height/2), 
                                   bubble.contentSize.width, 
                                   bubble.contentSize.height);
    if (CGRectContainsPoint(bubbleRect, touchLocation)) {            
        NSLog(@"%i", [bubbles count]);
        [bubble setDisplayFrame:[[CCSpriteFrameCache sharedSpriteFrameCache] spriteFrameByName:@"bubbleBlow"]];
        id disappear = [CCFadeTo actionWithDuration:0.1 opacity:0];
        [bubble runAction:disappear];            
    }
}

return TRUE;}

Every bubbles blowing perfectly if only one bubble in the screen, but if one bubble on the screen and another one was appeared, only last one is detects touches.

What am i doing wrong?

Answer 1

Hard to tell without seeing more code – but here’s where I’d start:

Above this line:

for (CCSprite *bubble in bubbles) {

add:

NSLog(@"%i", [bubbles count]);

EDIT:

Based on the code you added:

Your problem is with this line:

bubbles = [[NSMutableArray alloc] init];

which is effectively wiping out your bubbles array every time you add a new bubble.

So, there will only ever be one bubble in the array – the last one.

Hence the problem you’re running into.