Offline tool to extracting position of bone at arbitrary points of anim

Hi Gang,

We're going to have units that throw projectile weapons at their victims. We want our game to be deterministic, so we can't rely on AnimationEvents firing on different devices to fire at the same time. What we need is an offline tool that extracts bone position information for each of our 'throw' animations, and then save that data off so it's readable by our game.

So I know how read AnimationEvent instances from our clips to figure out at what point in our clip the projectile should be created. What I'm missing is how to - in an offline way - sample our skeleton at a certain spot in our clip, and grab the model-space position of an arbitrary bone. Has anyone had to do this before?

Thanks,
Jeff

 

hey, I dont think this would be reliable either (to detect exact transform position).

take a look at this simple script, which is an example of how to record transforms.
http://forum.unity3d.com/threads/ikanimator.356586/

but for this I'd use trigger collider (parented to the character capsule)

 

Hey dibdab, thanks for your input.
Over the weekend I came across AnimationUtility, which lets me extract curves for each of the transform properties (local pos, local rot, local scale) for every bone in the hierarchy. I then evaluated those curves at the desired time and got the pose I want. In short:

EditorCurveBinding[] bindings = AnimationUtility.GetCurveBindings(clip);
AnimationCurve curve = AnimationUtility.GetEditorCurve(clip, bindings[x]);
MyCurveInfo[bindings[x].propertyName] = curve;

...
float localPosX = MyCurveInfo["m_localPosition.x"].Evaluate(0.1f);