enter method

@override void enter(Entity entity, AnimatorState state, { double fade = 0, })

entity enters state, blending from what it played over fade seconds where it can.

Implementation

@override
void enter(Entity entity, AnimatorState state, {double fade = 0}) {
  final player = entity.getComponent<AnimationPlayerComponent>()!;
  final tree = state.blend;
  if (tree == null || tree.motions.isEmpty) {
    player.play(state.clipName, fade: fade, restart: true);
  } else {
    // Weights come with the first update; until then the first motion.
    player.playBlend(
      [for (final m in tree.motions) m.clip],
      [for (var i = 0; i < tree.motions.length; i++) i == 0 ? 1.0 : 0.0],
      speeds: [for (final m in tree.motions) m.speed],
      fade: fade,
    );
  }
  // Set after playing, so what fades out keeps its own speed and looping.
  player
    ..playingSpeed = state.speed
    ..playingLoop = state.loop ?? true;
}