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Tweening with a boolean (?)
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Posts: 3


Fri, Jun 22 2012


I am using Adam Eisfelds' touch library and require the following: A stack of individual blocks in a 3 x 3 matrix. Touching any of the blocks will push it forward (out of the matrix). Touch it again, or any other block and it will go back to its old position.

So my question is - what is the best way to pass the correct mesh tapped a tween, and then if tapped again a different tween? My thought was a boolean - check if it is 'out' and move back else move out.

Eventually I will be passing a message that this particular box was tapped so show something over 'here' but that is another forum post.

Thank you for any asisstance - I don't think it matters that I am using Adams library - but I could be wrong. I just want to know how you would go about tracking tweens based on location/movement or selection. In your example code everything just animates when the view loads. I want to control the animation based on taps.

- (void)didTapAEGLMesh: (AEGLMesh*)tappedMesh

tappedMesh.mesh.material = materialHit;
[tappedMesh.mesh compileCoreMesh];

if ([lastTappedMesh isEqual:box1]) {
lastTappedMesh = boxx1;
} else if ([lastTappedMesh isEqual:box2]) {
lastTappedMesh = boxx2;

NSDictionary *tween;
tween = [NSDictionary dictionaryWithObjectsAndKeys:
kNGLTweenRepeatMirrorEase, kNGLTweenKeyRepeat,
@"-0.5", @"x",
@"0.3", @"y",

[NGLTween tweenWithTarget:lastTappedMesh duration:1.0 values:tween];

tween = [NSDictionary dictionaryWithObjectsAndKeys:
kNGLTweenRepeatMirrorEase, kNGLTweenKeyRepeat,
@"0.5", @"x",
@"0.3", @"y",
[NGLTween tweenWithTarget:lastTappedMesh duration:1.0 values:tween];

tween = [NSDictionary dictionaryWithObjectsAndKeys:
kNGLEaseLinear, kNGLTweenKeyEase,
kNGLTweenRepeatLoop, kNGLTweenKeyRepeat,
@"360.0", @"rotateY",
[NGLTween tweenWithTarget:lastTappedMesh duration:20.0 values:tween];
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Posts: 571


Sat, Jun 23 2012

In response to: @evanbuxton

Hi buddy,

I don't know if I understand what you're trying to do. But independent of the code you made, here is some features about NGLTween:

  1. Use NGLTweenDelegate to be notified about the tween states. Like "willRepeat" or "didRepeat"
  2. A BOOL is in fact 0 and 1, so you can tween a float 0-1 transforming it into a BOOL again.

Here is the tween docs:

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