Question

I am trying to play through an animation using these files that I created with texture packer (footballAnim-hd.pvr.ccz) and (footballAnim.pv-hd.plist) but I have encountered a problem. Here is my code:

[[CCSpriteFrameCache sharedSpriteFrameCache] addSpriteFramesWithFile:@"footballAnim.pv.plist"];

    CCSprite *football = [CCSprite spriteWithSpriteFrameName:@"Football59-hd.png"];
    football.position = ccp(100, 100);

    CCSprite *football2 = [CCSprite spriteWithSpriteFrameName:@"Football59-hd.png"];
    football2.position = ccp(120, 100);

    //This is the animation
    id anim = [CCAnimate actionWithSpriteSequence:@"Football%d-hd.png"
                                                  numFrames:59
                                                      delay:0.01
                                       restoreOriginalFrame:NO];
    //This is the animation
    id anim2 = [CCAnimate actionWithSpriteSequence:@"Football%d-hd.png"
                                        numFrames:59
                                            delay:0.01
                             restoreOriginalFrame:NO];

    //This is the action
    id repeat = [CCRepeatForever actionWithAction:anim];

    //This is the action
    id repeat2 = [CCRepeatForever actionWithAction:anim2];

     CCSpriteBatchNode *batchNode=[CCSpriteBatchNode batchNodeWithFile:@"footballAnim.pvr.ccz"];
    [self addChild:batchNode];
    [batchNode addChild:football];
    [batchNode addChild:football2];

    [football runAction:repeat];
    [football2 runAction:repeat2];

So My problem is I am using kobold2d which is using (cocos2d v1.1.0-beta2b) and when I try to play this animation it only plays through half of the frames, but then I tried this (EXACT) code in another cocos2d project which is using (cocos2d v1.0.0-rc) and it works like a charm. Is this a bug in cocos2d or am I not doing something right?

Answer 1

I figured out how to fix my problem. Someone on the cocos2d forum suggested changing the update method in CCActionInterval.m (from this)

-(void) update: (ccTime) t
{
    NSArray *frames = [animation_ frames];
    NSUInteger numberOfFrames = [frames count];
    CCSpriteFrame *frameToDisplay = nil;

    for( NSUInteger i=nextFrame_; i < numberOfFrames; i++ ) {
        NSNumber *splitTime = [splitTimes_ objectAtIndex:i];

        if( [splitTime floatValue] <= t ) {
            CCAnimationFrame *frame = [frames objectAtIndex:i];
            frameToDisplay = [frame spriteFrame];
            [(CCSprite*)target_ setDisplayFrame: frameToDisplay];

            NSDictionary *dict = [frame userInfo];
            if( dict )
                [[NSNotificationCenter defaultCenter] postNotificationName:CCAnimationFrameDisplayedNotification object:target_ userInfo:dict];

            nextFrame_ = i+1;

            break;
        }
    }
}

To this

-(void) update: (ccTime) t
{
    NSArray *frames = [animation_ frames];
    NSUInteger numberOfFrames = [frames count];

    NSUInteger idx = t * numberOfFrames;

    if( idx >= numberOfFrames )
        idx = numberOfFrames -1;

    CCAnimationFrame *frame = [frames objectAtIndex:idx];
    CCSpriteFrame *frameToDisplay = [frame spriteFrame];
    [(CCSprite*)target_ setDisplayFrame: frameToDisplay];

    NSDictionary *dict = [frame userInfo];
    if( dict )
        [[NSNotificationCenter defaultCenter] postNotificationName:CCAnimationFrameDisplayedNotification object:target_ userInfo:dict];
}

This worked for me, but I don’t know if it is the ideal fix.