private Sprite[] GetCurrentFrames()
{
FrameAnimatorData frameAnimatorData = GetCurrentFrameAnimatorData();
if (frameAnimatorData == null)
{
return(null);
}
return(frameAnimatorData.Frames);
}
////当前帧率，通过曲线计算而来
//private float currentFramerate = 20.0f;
/// <summary>
/// 重设动画
/// </summary>
public void Reset()
{
FrameAnimatorData frameAnimatorData = GetCurrentFrameAnimatorData();
if (frameAnimatorData == null)
{
return;
}
currentFrameIndex = frameAnimatorData.Framerate < 0 ? frameAnimatorData.Frames.Length - 1 : 0;
}
void Update()
{
//帧数据无效，禁用脚本
FrameAnimatorData frameAnimatorData = GetCurrentFrameAnimatorData();
if (frameAnimatorData == null)
{
this.enabled = false;
return;
}
if (frameAnimatorData.Frames == null || frameAnimatorData.Frames.Length == 0)
{
this.enabled = false;
return;
}
//从曲线值计算当前帧率
Sprite[] frames = frameAnimatorData.Frames;
float curveValue = frameAnimatorData.curve.Evaluate((float)currentFrameIndex / frames.Length);
float curvedFramerate = curveValue * frameAnimatorData.Framerate;
//帧率有效
if (curvedFramerate != 0)
{
//获取当前时间
float time = ignoreTimeScale ? Time.unscaledTime : Time.time;
//计算帧间隔时间
float interval = Mathf.Abs(1.0f / curvedFramerate);
//满足更新条件，执行更新操作
if (time - timer > interval)
{
//执行更新操作
DoUpdate(curvedFramerate);
}
}
#if UNITY_EDITOR
else
{
Debug.LogWarning("Framerate got '0' value, animation stopped.");
}
#endif
}
//具体更新操作
private void DoUpdate(float curvedFramerate)
{
//计算新的索引
int nextIndex = currentFrameIndex + (int)Mathf.Sign(curvedFramerate);
FrameAnimatorData frameAnimatorData = GetCurrentFrameAnimatorData();
Sprite[] frames = frameAnimatorData.Frames;
//索引越界，表示已经到结束帧
if (nextIndex < 0 || nextIndex >= frames.Length)
{
//广播事件
if (FinishEvent != null)
{
FinishEvent();
}
//非循环模式，禁用脚本
if (frameAnimatorData.Loop == false)
{
currentFrameIndex = Mathf.Clamp(currentFrameIndex, 0, frames.Length - 1);
this.enabled = false;
return;
}
}
//钳制索引
currentFrameIndex = nextIndex % frames.Length;
//更新图片
if (image != null)
{
image.sprite = frames[currentFrameIndex];
}
else if (spriteRenderer != null)
{
spriteRenderer.sprite = frames[currentFrameIndex];
}
//设置计时器为当前时间
timer = ignoreTimeScale ? Time.unscaledTime : Time.time;
}