74 lines
2.4 KiB
C#
74 lines
2.4 KiB
C#
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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public class Patrolman : MonoBehaviour
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{
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//控制巡逻敌人
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[Tooltip("拖入巡逻点1")]
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public Transform point1;
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[Tooltip("拖入巡逻点2，他将于此两点间往返")]
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public Transform point2;
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[Tooltip("普通移动时的速度")]
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public float walkSpeed;
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[Tooltip("听见响动，冲锋时的速度")]
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public float rushSpeed;
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private float speed;//记录此刻瞬间的速度,不包含方向
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private float velocity;//速度，正值代表向右，用来判断面部朝向
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private Transform target;//当前目标位置
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private bool isInterrupt = false;//记录目前是否被石头落地的声音所吸引
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private float PVelocity = -1f;//记录上一帧的速度,默认上一帧往右走
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// Start is called before the first frame update
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void Start()
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{
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target = point1;//初始化起始目标为巡逻点1
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speed = walkSpeed;//初始化瞬间速度为走路速度
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}
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// Update is called once per frame
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void Update()
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{
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Move();//每帧朝目标移动
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}
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//朝目标移动函数
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private void Move()
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{
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//构造速度向量
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velocity = (target.position - transform.position).x;
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velocity = Mathf.Abs(velocity)/velocity;//把速度标准化为1或者-1，只保留方向
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velocity *= speed;//给速度赋以大小
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//判断是否到达巡逻点
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if(velocity*PVelocity < 0 && !isInterrupt)//速度相乘得负数，说明方向发生改变
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{
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//如果计算速度发生改变，且不是因为被石头打断，说明经过了巡逻点，此时更换目标点为另一个
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if(target.Equals(point1)) target = point2;
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else target = point1;
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}
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//控制面部朝向
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if(velocity > 0) transform.rotation = Quaternion.Euler(0,0,0);
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else transform.rotation = Quaternion.Euler(0,180f,0);
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//移动
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transform.position = new Vector3(
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//x
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transform.position.x +//自身此刻位置 加上
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velocity * //构造好的速度乘以
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Time.deltaTime,//使其与时间无关
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//y和z不变
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transform.position.y,
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transform.position.z
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);
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//更新PVelocity
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PVelocity = velocity;
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}
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}
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