using System;
using UnityEngine;

namespace Entity
{
    public class Bullet : Entity
    {
        public override void SetTarget(Vector3 pos)
        {
            base.SetTarget(pos);
            RotateTransformToDirection(transform, direction);
        }

        protected override void AutoBehave()
        {
            TryMove();
        }

        private void OnTriggerEnter2D(Collider2D other)
        {
            other.GetComponent<Entity>()?.OnHit(this);
            attributes.health -= 1;
        }
        // 旋转对象到指定方向
        public static void RotateTransformToDirection(Transform transform, Vector3 targetDirection)
        {
            // 默认向上方向
            Vector3 upDirection = Vector3.up;

            // 计算旋转角度
            float angle = Mathf.Atan2(targetDirection.x, targetDirection.y) * Mathf.Rad2Deg;

            // 设置旋转
            transform.rotation = Quaternion.Euler(0, 0, angle);
        }
    }
}