//increments one frame, and handles animation ending signals. Note that all animations loop by default.
public AnimationState Tick(AnimationState currentState)
{
currentState.CurrentFrame++;
if (!Frames.ContainsKey (currentState.AnimationName)) { //Shouldn't happen, let's fail gracefully.
//TODO: Log this?
return currentState;
}
if (currentState.CurrentFrame == Frames[currentState.AnimationName].Length) { //The current animation just ended and looped!
currentState.CurrentFrame = 0;
currentState = Update (currentState, "anim_end"); //Could probably be optimized. Perhaps the current animation stores a next_anim? If none, stop. If it has one, switch. Looping would switching to self.
}
return currentState;
}
public AnimationState Update(AnimationState currentState, String signal)
{
AnimationTransitionSignal specificTransition = new AnimationTransitionSignal (currentState.AnimationName, signal);
AnimationTransitionSignal generalTransition = new AnimationTransitionSignal ("", signal);
if (StateChanges.ContainsKey (specificTransition)) {
AnimationTransitionResponse response = StateChanges [specificTransition];
currentState.AnimationName = response.DestAnim;
if (response.ResetFrameNumber) {
currentState.CurrentFrame = 0;
}
} else if (StateChanges.ContainsKey (generalTransition)) {
AnimationTransitionResponse response = StateChanges [generalTransition];
currentState.AnimationName = response.DestAnim;
if (response.ResetFrameNumber) {
currentState.CurrentFrame = 0;
}
}
return currentState;
}
public Rectangle GetRectangle(AnimationState state)
{
Rectangle[] rects = Frames [state.AnimationName];
int frameNum = state.CurrentFrame % rects.Length;
return rects [frameNum];
}