/// <summary>
/// Update the animation.
/// </summary>
public void Update(float dt)
{
if (IsPaused)
{
return;
}
if (wantToChangedTag != null)
{
ReallySetTag(wantToChangedTag, wantToChangedTagReverseMode);
wantToChangedTag = null;
wantToChangedTagReverseMode = false;
}
if (wantToSetFrameIndexFlag)
{
SetFrameImmediately(wantToSetFrameIndex);
}
if (dt == 0)
{
return;
}
if (dt < 0)
{
throw new Exception($"{nameof(dt)} must be positive");
}
if (currentTag == null)
{
throw new Exception("not set tag yet");
}
string currentExecuteTagName = currentTag.Name;
// invoke ....
if (isNeedStartToCallFrameAction)
{
FrameBegin?.Invoke(currentExecuteTagName, CurrentFrameIndex);
isNeedStartToCallFrameAction = false;
}
if (currentTag.loopTime)
{
var lastFrame = CurrentFrameIndex;
ElapsedTimeMoveFrame_LoopMode(CurrentFrameIndex, TimeElapsed, dt,
out var beginFrameList, out var endFrameList);
foreach (var itemIndex in beginFrameList)
{
FrameBegin?.Invoke(currentExecuteTagName, itemIndex);
}
foreach (var itemIndex in endFrameList)
{
FrameEnd?.Invoke(currentExecuteTagName, itemIndex);
}
if (beginFrameList.Count > 0)
{
CurrentFrameIndex = beginFrameList[beginFrameList.Count - 1];
}
// add the remain ....
TimeElapsed += dt;
}
else
{
var lastFrameIndex = currentTag.Frames.Count - 1;
if (CurrentFrameIndex == lastFrameIndex && TimeElapsed > currentTag.Duration)
{
// do nothing ...
}
else
{
var curFrame = CurrentFrameIndex;
ElapsedTimeMoveFrame_NoLoopMode(CurrentFrameIndex, TimeElapsed, dt,
out var beginFrameList, out var endFrameList);
foreach (var itemIndex in beginFrameList)
{
FrameBegin?.Invoke(currentExecuteTagName, itemIndex);
}
foreach (var itemIndex in endFrameList)
{
FrameEnd?.Invoke(currentExecuteTagName, itemIndex);
}
// add the remain ....
if (beginFrameList.Count > 0)
{
CurrentFrameIndex = beginFrameList[beginFrameList.Count - 1];
}
TimeElapsed += dt;
}
}
}
protected virtual void OnFrameEnd(RenderTimer timer)
{
FrameEnd?.Invoke(this, new FrameStageEventArgs(timer));
}
/// <summary> /// Raises the <see cref="FrameEnd"/> event. /// </summary> protected virtual void OnFrameEnd() => FrameEnd?.Invoke(this);