[Unity动画]04.Avatar Mask

参考链接：

https://www.cnblogs.com/hammerc/p/4832637.html

Avatar Mask主要用于动画层融合。例如说，边跑边举起东西，这个实际上就是下半身播放跑步动画，上半身播放举起动画，所谓的Avatar Mask就是播放动画时让身体的某些部位不起作用(即不播放动画)

1.添加一个新的动画层

其中Empty是一个空的动画，同时添加一个Trigger型参数wave

TestAnimator.cs

 using UnityEngine;

 public class TestAnimator : MonoBehaviour {

     //------------------------------------------外部
     public float Move = ;
     public bool IsDying = false;

     //------------------------------------------内部
     private Animator animator;

     //常数
     private int baseLayerIndex;
     private int idleStateHash;
     private int runStateHash;
     private int dyingStateHash;
     private string movePara;
     private string isDyingPara;
     private string wavePara;

     void Start ()
     {
         animator = GetComponent<Animator>();

         baseLayerIndex = animator.GetLayerIndex("Base Layer");
         idleStateHash = Animator.StringToHash("Base Layer.Idle");
         runStateHash = Animator.StringToHash("Base Layer.Run");
         dyingStateHash = Animator.StringToHash("Base Layer.Dying");
         movePara = "move";
         isDyingPara = "isDying";
         wavePara = "wave";
     }

     void Update ()
     {
         //------------------------------------------播放动作
         animator.SetFloat(movePara, Move);
         if (IsDying)
         {
             animator.SetBool(isDyingPara, true);
             IsDying = false;
         }

         //------------------------------------------动作恢复
         AnimatorStateInfo stateInfo;
         int fullPathHash;

         //BaseLayer
         stateInfo = animator.GetCurrentAnimatorStateInfo(baseLayerIndex);
         if (!animator.IsInTransition(baseLayerIndex) && stateInfo.normalizedTime >= )
         {
             fullPathHash = stateInfo.fullPathHash;
             if (fullPathHash == dyingStateHash)
             {
                 animator.SetBool(isDyingPara, false);
             }
         }
     }

     public void SetDying(bool state)
     {
         if (animator)
         {
             animator.SetBool(isDyingPara, state);
         }
     }

     public void TriggerWave()
     {
         if (animator)
         {
             animator.SetTrigger(wavePara);
         }
     }

     public void ActionCallBack(string s)
     {
         if (s == "dyingStart")
         {
             Debug.Log("");
         }
         else if (s == "dying")
         {
             Debug.LogWarning("");
         }
         else if (s == "dyingEnd")
         {
             Debug.LogError("");
         }
     }
 }

NewBehaviourScript.cs

 using UnityEngine;

 public class NewBehaviourScript : MonoBehaviour {

     public TestAnimator testAnimator;

     void Update ()
     {
         if (Input.GetKeyDown(KeyCode.Q))
         {
             testAnimator.Move = ;
         }
         if (Input.GetKeyDown(KeyCode.W))
         {
             testAnimator.TriggerWave();
         }
     }
 }

效果如下。按下Q，播跑步动画，再按下W，覆盖为招手动画。可以试着将这两个层的位置换一下。可以看出，动画层越后优先级越高；同时还受动画层的权重影响。

2.创建一个Avatar Mask并添加到动画层中

如下图2，表示该动画层中只有上半身起作用

效果如下。按下Q，播跑步动画，再按下W，上半身播招手动画。