Unity 动态为AnimationClip 注入事件的小工具类

需求来源：美术每次改动画，程序都要重新把AnimEvent加入AnimationClip一遍，这不科学。（其实这事情也可以给策划做，但是策划太蠢了。）

于是我写了一个小工具类，可以动态注入Anim事件，只要AnimClip的名字不改，一切都会是那么的美好。

配置图：



代码如下：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class AnimationEventInjector : MonoBehaviour
{
[System.Serializable]
public class InjectEvent
{
public string TargetClip;
public string FunctionName;
public string stringParam;
public int intParam;
public float floatParam;
[Space]
[Range(0.0f, 1.0f)]
public float InjectPosition;

public UnityEngine.AnimationEvent GetAnimEvent(float total_length)
{
UnityEngine.AnimationEvent AnimEvent = new UnityEngine.AnimationEvent();
AnimEvent.time = total_length * InjectPosition;
AnimEvent.functionName = FunctionName;
AnimEvent.intParameter = intParam;
AnimEvent.stringParameter = stringParam;
AnimEvent.floatParameter = floatParam;

return AnimEvent;
}
}
[SerializeField]
InjectEvent[] inject_events;
Dictionary<string, AnimationClip> clip_index = new Dictionary<string, AnimationClip>();

public void Inject( Animator target_animator )
{
clip_index.Clear();

if (target_animator != null)
{
RuntimeAnimatorController runtime_ctrl = target_animator.runtimeAnimatorController;
AnimationClip[] clips = runtime_ctrl.animationClips;

foreach (var clip in clips)
{
clip_index[clip.name] = clip;
}

foreach (var injectE in inject_events)
{
AnimationClip clip = null;
clip_index.TryGetValue(injectE.TargetClip, out clip);
if (clip != null)
{
clip.AddEvent(injectE.GetAnimEvent( clip.length ));
Debug.Log("Event injected for command " + injectE.stringParam );
}
else
{
Debug.Log( "<color=red> Clip with name "+ injectE.TargetClip + " is not exist! </color>");
}
}

target_animator.Rebind();
}
}

}


注意1：需要手动调用Inject函数进行初始化

注意2：Inject Position 是时间百分比，程序会换算成秒，并且给AnimationEvent.time赋值，我个人认为这样做最方便，但是如果你希望填精确时间可以自己调节一下代码。