using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class camfollow : MonoBehaviour
{
    public Transform target; // 要跟随的目标，这里通常是玩家角色
    public float smoothSpeed = 0.001f; // 摄像机移动的平滑速度
    public Vector3 offset; // 摄像机相对于目标的偏移量

    public float rotationSmoothSpeed = 50f; // 摄像机旋转的平滑速度
    public float maxDistance = 10f; // 最大追踪距离s
    public float minDistance = 5f; // 最小追踪距离

    // 震动相关变量
    public float shakeDuration = 0.5f; // 震动持续时间
    public float shakeMagnitude = 1f; // 震动幅度
    private Vector3 originalOffset; // 用于存储原始偏移量
    private float shakeElapsedTime = 0f; // 记录震动已经持续的时间
    void Start()
    {
        originalOffset = offset;
    }
    void LateUpdate()
    {
        if (target == null)
        {
            return;
        }

        // 震动逻辑处理
        if (shakeElapsedTime > 0)
        {
            // 生成随机偏移量来模拟抖动
            Vector3 randomOffset = Random.insideUnitSphere * shakeMagnitude;
            offset = originalOffset + randomOffset;

            shakeElapsedTime -= Time.deltaTime;
        }
        else
        {
            offset = originalOffset;
        }

        // 计算目标位置
        Vector3 desiredPosition = target.position + offset;
        transform.position = desiredPosition;

        // 计算摄像机旋转方向，平滑旋转到目标方向
        Vector3 direction = target.position - transform.position;
        Quaternion targetRotation = Quaternion.LookRotation(direction);
        transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, Time.deltaTime * rotationSmoothSpeed);
    }
    public void Shake()
    {
        shakeElapsedTime = shakeDuration;
    }
}