using UnityEngine;

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

    StateHandler stateHandler;
    float pow2MinDistToPlayer;

    public IVMateChasePlayer(IVMate owner, IVCharacter player)
    {
        this.owner = owner;
        this.player = player;
        pow2MinDistToPlayer = GameProperty.Instance.DistRangeMateToPlayer.x * GameProperty.Instance.DistRangeMateToPlayer.x;
    }

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

#if UNITY_EDITOR
        if (owner.SkeletonAnimation != null && owner.SkeletonAnimation.TryGetAnimation("move", out Spine.Animation _))
#endif
            owner.SkeletonAnimation.AnimationState.SetAnimation(0, "move", true);
    }

    public void Excute()
    {
        if(IsPlayerTooNear())
        {
            stateHandler.ChangeState(new IVMateIdle(owner, player));
        }
        else
        {
            Vector2 dir = player.transform.position - owner.transform.position;
            dir.Normalize();

            Vector3 newPosition = (Vector2)owner.transform.position + (dir * owner.Data.DefaultMoveSpeed * Time.unscaledDeltaTime);
            newPosition.z = owner.transform.position.z;

            owner.transform.position = newPosition;
            owner.ChangeLookDirection(player.transform);
        }
    }

    public void Exit()
    {
        stateHandler = null;
    }

    bool IsPlayerTooNear()
    {
        float sqrtDist = Vector2.SqrMagnitude(owner.transform.position - player.transform.position);
        return sqrtDist <= pow2MinDistToPlayer;
    }
}