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  • Possible Issue with (spSkeletonBounds_update)

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Hi, I believe there is an issue with :spSkeletonBounds_update in the context of cocos2d.

Basically I want to work out the height of the character at certain time in the animation before playing the animation:

// First get the height of the avatar by working out the distance between min and max
[[somelayer animation] setFrameForAnimation:someanimation withTime:0.6];
[somelayer getSnippetHeight];

[[somelayer animation] setFrameForAnimation:someanimation withTime:0.0];
[somelayer setVisible:YES];
[somelayer setPosition:ccp(posX, posY)];
[[somelayer animation] setScale:self.somelayerscale];
[[somelayer animation] setAnimationForTrack:0 name:someanimation loop:NO];

  • (void)getSnippetHeight
    {
    spSkeletonBounds *bounds = spSkeletonBounds_create();
    spSkeletonBounds_update(bounds, [animation skeleton], 1);
    NSLog(@"min: %f, max: %f", bounds->minY, bounds->maxY);


    spSkeletonBounds_dispose(bounds);
    }

The problem:
It keeps reporting the max and min from the setup pose rather than from the time in the animation from which I want it.

Thank you in advance

6일 후

Not sure what setFrameForAnimation is. To do what you want, but you need to apply the animation, update the bone's world transform, then use SkeletonBounds. setAnimationForTrack is convenience for AnimationState_setAnimation, but you haven't applied it or done update world transform. Try calling [[somelayer animation] update:0] to do this.

7일 후

Thanks Nate,

Updating world transform works :-)

Kindest Regards