public class IVMateCastSkill : IState
{
    IVMate owner;
    IVCharacter player;

    StateHandler stateHandler;

    public IVMateCastSkill(IVMate owner, IVCharacter player)
    {
        this.owner = owner;
        this.player = player;
    }

    public void Enter(StateHandler excutor)
    {
        stateHandler = excutor;

#if UNITY_EDITOR
        if (owner.SkeletonAnimation != null && owner.SkeletonAnimation.TryGetAnimation("skill", out Spine.Animation _))
#endif
        {
            owner.SkeletonAnimation.AnimationState.SetAnimation(0, "skill", false);
            owner.SkeletonAnimation.AnimationState.Event += OnSkillEvent;
        }

        owner.Skill.transform.position = owner.CenterPivot;
        owner.Skill.StartCoolTime();
    }

    public void Excute()
    {
        var trackEntry = owner.SkeletonAnimation != null ? owner.SkeletonAnimation.AnimationState.GetCurrent(0) : null;
        if (trackEntry is null || trackEntry.IsComplete)
            stateHandler.ChangeState(new IVMateIdle(owner, player));
    }

    public void Exit()
    {
#if UNITY_EDITOR
        if (owner.SkeletonAnimation != null)
#endif
        {
            owner.SkeletonAnimation.AnimationState.Event -= OnSkillEvent;
        }

        stateHandler = null;
    }

    private void OnSkillEvent(Spine.TrackEntry trackEntry, Spine.Event e)
    {
        if (e.Data.Name == "cast")
        {
            owner.Skill.transform.position = owner.CenterPivot;
            owner.Skill.Cast(owner);
        }
    }
}