使用AnimatorOverrideController动态更换animationclip注意事项

http://www.ceeger.com/forum/read.php?tid=19138

public AnimationClip clip;
Animator anim;
void Awake()
{
    anim = GetComponent<Animator>();
}
void Start () {
    AnimatorOverrideController overrideController = new AnimatorOverrideController();
    overrideController.runtimeAnimatorController = anim.runtimeAnimatorController;
    overrideController["testCip"] = clip;
    anim.runtimeAnimatorController = overrideController;
}

这里一定要注意， overrideController["testCip"] = clip;里面的testClip不是状态机里面的状态名，而是实际要替换的clip的名字..... 

也可以用AnimationClipPair得到clip的名字

RuntimeAnimatorController tempController = anim.runtimeAnimatorController;
AnimatorOverrideController overrideController = new AnimatorOverrideController();
overrideController.runtimeAnimatorController = tempController;
overrideController.PerformOverrideClipListCleanup();//<span style="color:#ff0000;">这个函数在U5.3和5.0都不存在应该是去掉了吧</span>

overrideController[overrideController.clips[0].originalClip.name] = clip;
overrideController[overrideController.clips[1].originalClip.name] = clip2;

foreach (AnimationClipPair pairs in overrideController.clips)
{
    Debug.Log(pairs.originalClip.name );
    if (pairs.overrideClip!=null)
    {
        Debug.Log(pairs.overrideClip.name );
    }
}

anim.runtimeAnimatorController = overrideController;