播放并等待 Animation/Animator 完成播放

Question

在我的脚本中，当玩家位于平台顶部时，我将其向上移动。 它工作正常。但现在我想在它启动后播放“Down”剪辑。

using UnityEngine;
using System.Collections;
using System.Reflection;

public class DetectPlayer : MonoBehaviour {

    GameObject target;

    public void ClearLog()
    {
        var assembly = Assembly.GetAssembly(typeof(UnityEditor.ActiveEditorTracker));
        var type = assembly.GetType("UnityEditorInternal.LogEntries");
        var method = type.GetMethod("Clear");
        method.Invoke(new object(), null);
    }

    void OnCollisionEnter(Collision collision)
    {
        if (collision.gameObject.name == "Platform")
        {
            Debug.Log("Touching Platform");
        }

    }

    void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.name == "OnTop Detector")
        {
            Debug.Log("On Top of Platform");
            GameObject findGo = GameObject.Find("ThirdPersonController");
            GameObject findGo1 = GameObject.Find("Elevator");
            findGo.transform.parent = findGo1.transform;
            target = GameObject.Find("Elevator");
            target.GetComponent<Animation>().Play("Up");
        }
    }
}

行后

target.GetComponent<Animation>().Play("Up");

我想在它播放完后向下播放：

target.GetComponent<Animation>().Play("Down");

Answer 1

虽然这两个答案都应该有效，但使用协程和IsPlaying 函数的另一种方法。如果您还想在动画之后执行其他任务，您可以使用协程解决方案。

对于Animation系统：

旧的 Unity 动画播放系统。这应该不在您的新项目中使用，除非您仍在使用旧的 Unity 版本。

IEnumerator playAndWaitForAnim(GameObject target, string clipName)
{
    Animation anim = target.GetComponent<Animation>();
    anim.Play(clipName);

    //Wait until Animation is done Playing
    while (anim.IsPlaying(clipName))
    {
        yield return null;
    }

    //Done playing. Do something below!
    Debug.Log("Done Playing");
}

对于Animator系统

这是新的 Unity 动画播放系统。这应该在您的新项目中使用，而不是 Animation API。在性能方面，最好使用Animator.StringToHash并通过哈希数比较当前状态，而不是比较字符串的IsName函数，因为哈希是faster。

假设您有名为Jump、Move 和Look 的州名。你得到他们的哈希值如下，然后使用函数在下面播放和等待他们：

const string animBaseLayer = "Base Layer";
int jumpAnimHash = Animator.StringToHash(animBaseLayer + ".Jump");
int moveAnimHash = Animator.StringToHash(animBaseLayer + ".Move");
int lookAnimHash = Animator.StringToHash(animBaseLayer + ".Look");

public IEnumerator PlayAndWaitForAnim(Animator targetAnim, string stateName)
{
    //Get hash of animation
    int animHash = 0;
    if (stateName == "Jump")
        animHash = jumpAnimHash;
    else if (stateName == "Move")
        animHash = moveAnimHash;
    else if (stateName == "Look")
        animHash = lookAnimHash;

    //targetAnim.Play(stateName);
    targetAnim.CrossFadeInFixedTime(stateName, 0.6f);

    //Wait until we enter the current state
    while (targetAnim.GetCurrentAnimatorStateInfo(0).fullPathHash != animHash)
    {
        yield return null;
    }

    float counter = 0;
    float waitTime = targetAnim.GetCurrentAnimatorStateInfo(0).length;

    //Now, Wait until the current state is done playing
    while (counter < (waitTime))
    {
        counter += Time.deltaTime;
        yield return null;
    }

    //Done playing. Do something below!
    Debug.Log("Done Playing");

}

---

---

对于专门针对您的碰撞回调函数 (OnTriggerEnter) 的特定问题的解决方案，有两种可能的方法：

1.触发检测后启动协程函数播放动画：

void OnTriggerEnter(Collider other)
{
    if (other.gameObject.name == "OnTop Detector")
    {
        Debug.Log("On Top of Platform");
        GameObject findGo = GameObject.Find("ThirdPersonController");
        GameObject findGo1 = GameObject.Find("Elevator");
        findGo.transform.parent = findGo1.transform;
        target = GameObject.Find("Elevator");
        StartCoroutine(playAnim(target));
    }
}

IEnumerator playAnim(GameObject target)
{
    Animation anim = target.GetComponent<Animation>();
    anim.Play("Up");

    //Wait until Up is done Playing the play down
    while (anim.IsPlaying("Up"))
    {
        yield return null;
    }

    //Now Play Down
    anim.Play("Down");
}

或

2.使OnTriggerEnter函数成为协程（IEnumerator）而不是void函数：

IEnumerator OnTriggerEnter(Collider other)
{
    if (other.gameObject.name == "OnTop Detector")
    {
        Debug.Log("On Top of Platform");
        GameObject findGo = GameObject.Find("ThirdPersonController");
        GameObject findGo1 = GameObject.Find("Elevator");
        findGo.transform.parent = findGo1.transform;
        target = GameObject.Find("Elevator");
        Animation anim = target.GetComponent<Animation>();
        anim.Play("Up");

        //Wait until Up is done Playing the play down
        while (anim.IsPlaying("Up"))
        {
            yield return null;
        }

        //Now Play Down
        anim.Play("Down");
    }
}

Answer 2

一种完全不需要手动检查的方法是使用排队

target.GetComponent<Animation>().PlayQueued("Down", QueueMode.CompleteOthers);

此代码将等待对象上当前正在播放的任何其他动画完成，然后再播放排队的动画。

The Unity API page regarding this topic