using UnityEngine;

namespace Comp
{
    public class CameraFollow : MonoBehaviour
    {
        public Transform target; // 跟随目标

        public float followSpeed = 2f; // 跟随速度

        private Vector3 offset; // 摄像机与目标的距离

        public void SetTarget(Transform target)
        {
            this.target = target;
            offset = transform.position - target.position; // 计算摄像机与目标的距离
        }

        private void LateUpdate()
        {
            if (target)
            {
                Vector3 targetPos = target.position + offset; // 计算目标的位置
                targetPos.y = transform.position.y; // y轴不移动
                transform.position =
                    Vector3.Lerp(transform.position, targetPos, followSpeed * Time.deltaTime); // 让摄像机缓慢移动到目标位置
            }
        }
    }
}