/** @param last May be null. */
private TrackEntry trackEntry(
int trackIndex, Animation animation, boolean loop, TrackEntry last) {
TrackEntry entry = trackEntryPool.obtain();
entry.trackIndex = trackIndex;
entry.animation = animation;
entry.loop = loop;
entry.eventThreshold = 0;
entry.attachmentThreshold = 0;
entry.drawOrderThreshold = 0;
entry.animationStart = 0;
entry.animationEnd = animation.getDuration();
entry.animationLast = -1;
entry.nextAnimationLast = -1;
entry.delay = 0;
entry.trackTime = 0;
entry.trackLast = -1;
entry.nextTrackLast = -1;
entry.trackEnd = Float.MAX_VALUE;
entry.timeScale = 1;
entry.alpha = 1;
entry.mixAlpha = 1;
entry.mixTime = 0;
entry.mixDuration = last == null ? 0 : data.getMix(last.animation, animation);
return entry;
}
/**
* Adds an animation to be played after the current or last queued animation for a track. If the
* track is empty, it is equivalent to calling {@link #setAnimation(int, Animation, boolean)}.
*
* @param delay Seconds to begin this animation after the start of the previous animation. May be
* <= 0 to use the animation duration of the previous track minus any mix duration plus the
* <code>delay</code>.
* @return A track entry to allow further customization of animation playback. References to the
* track entry must not be kept after the {@link AnimationStateListener#dispose(TrackEntry)}
* event occurs.
*/
public TrackEntry addAnimation(int trackIndex, Animation animation, boolean loop, float delay) {
if (animation == null) throw new IllegalArgumentException("animation cannot be null.");
TrackEntry last = expandToIndex(trackIndex);
if (last != null) {
while (last.next != null) last = last.next;
}
TrackEntry entry = trackEntry(trackIndex, animation, loop, last);
if (last == null) {
setCurrent(trackIndex, entry, true);
queue.drain();
} else {
last.next = entry;
if (delay <= 0) {
float duration = last.animationEnd - last.animationStart;
if (duration != 0)
delay +=
duration * (1 + (int) (last.trackTime / duration))
- data.getMix(last.animation, animation);
else delay = 0;
}
}
entry.delay = delay;
return entry;
}
private void setCurrent(int index, TrackEntry entry) {
TrackEntry current = expandToIndex(index);
if (current != null) {
TrackEntry previous = current.previous;
current.previous = null;
if (current.listener != null) current.listener.end(index);
for (int i = 0, n = listeners.size; i < n; i++) listeners.get(i).end(index);
entry.mixDuration = data.getMix(current.animation, entry.animation);
if (entry.mixDuration > 0) {
entry.mixTime = 0;
// If a mix is in progress, mix from the closest animation.
if (previous != null && current.mixTime / current.mixDuration < 0.5f) {
entry.previous = previous;
previous = current;
} else entry.previous = current;
} else trackEntryPool.free(current);
if (previous != null) trackEntryPool.free(previous);
}
tracks.set(index, entry);
if (entry.listener != null) entry.listener.start(index);
for (int i = 0, n = listeners.size; i < n; i++) listeners.get(i).start(index);
}
/**
* Adds an animation to be played delay seconds after the current or last queued animation.
*
* @param delay May be <= 0 to use duration of previous animation minus any mix duration plus the
* negative delay.
*/
public TrackEntry addAnimation(int trackIndex, Animation animation, boolean loop, float delay) {
TrackEntry entry = Pools.obtain(TrackEntry.class);
entry.animation = animation;
entry.loop = loop;
entry.endTime = animation.getDuration();
TrackEntry last = expandToIndex(trackIndex);
if (last != null) {
while (last.next != null) last = last.next;
last.next = entry;
} else tracks.set(trackIndex, entry);
if (delay <= 0) {
if (last != null) delay += last.endTime - data.getMix(last.animation, animation);
else delay = 0;
}
entry.delay = delay;
return entry;
}
private void setCurrent(int index, TrackEntry entry) {
TrackEntry current = expandToIndex(index);
if (current != null) {
if (current.previous != null) {
Pools.free(current.previous);
current.previous = null;
}
if (current.listener != null) current.listener.end(index);
for (int i = 0, n = listeners.size; i < n; i++) listeners.get(i).end(index);
entry.mixDuration = data.getMix(current.animation, entry.animation);
if (entry.mixDuration > 0) {
entry.mixTime = 0;
entry.previous = current;
} else Pools.free(current);
}
tracks.set(index, entry);
if (entry.listener != null) entry.listener.start(index);
for (int i = 0, n = listeners.size; i < n; i++) listeners.get(i).start(index);
}
/** {@link #addAnimation(int, Animation, boolean, float)} */
public TrackEntry addAnimation(int trackIndex, String animationName, boolean loop, float delay) {
Animation animation = data.getSkeletonData().findAnimation(animationName);
if (animation == null)
throw new IllegalArgumentException("Animation not found: " + animationName);
return addAnimation(trackIndex, animation, loop, delay);
}