3-2. 野猪-撞墙判定和等候计时

检测左边和右边是否有地面

老师的代码写的是有问题的，见我扩展的代码

using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;

public class PhysicsCheck : MonoBehaviour
{
    private CapsuleCollider2D coll;

    [Header("监测参数")]
    public bool manual;
    public Vector2 bottomOffset;
    public Vector2 bottomLeftOffset;
    public Vector2 bottomRightOffset;
    public Vector2 leftOffset;
    public Vector2 rightOffset;
    public float checkRaduis;
    public LayerMask groundLayer;

    [Header("状态")]
    public bool isGround;
    public bool isLeftGround;
    public bool isRightGround;
    public bool touchLeftWall;
    public bool touchRightWall;

    private void Awake()
    {
        coll = GetComponent<CapsuleCollider2D>();
        //if (!manual)
        //{
        //    rightOffset = new Vector2(coll.offset.x + coll.bounds.size.x / 2, coll.bounds.size.y / 2);
        //    leftOffset = new Vector2(coll.offset.x - coll.bounds.size.x / 2, coll.bounds.size.y / 2);
        //}
    }

    void Update()
    {
        Check();
    }

    public void Check()
    {
        if (!manual)
        {
            int faceDir = 0;
            if (transform.localScale.x > 0)
            {
                faceDir = 1;
            }
            else if (transform.localScale.x < 0)
            {
                faceDir = -1;
            }

            bottomOffset = new Vector2(faceDir * coll.offset.x, coll.bounds.size.y / 2 - coll.offset.y);
            bottomLeftOffset = new Vector2(faceDir * coll.offset.x - coll.bounds.size.x / 2, coll.bounds.size.y / 2 - coll.offset.y);
            bottomRightOffset = new Vector2(faceDir * coll.offset.x + coll.bounds.size.x / 2, coll.bounds.size.y / 2 - coll.offset.y);
            leftOffset = new Vector2(faceDir * coll.offset.x - coll.bounds.size.x / 2, coll.bounds.size.y / 2);
            rightOffset = new Vector2(faceDir * coll.offset.x + coll.bounds.size.x / 2, coll.bounds.size.y / 2);
        }

        // 监测地面
        isGround = Physics2D.OverlapCircle((Vector2)transform.position + bottomOffset, checkRaduis, groundLayer);
        isLeftGround = Physics2D.OverlapCircle((Vector2)transform.position + bottomLeftOffset, checkRaduis, groundLayer);
        isRightGround = Physics2D.OverlapCircle((Vector2)transform.position + bottomRightOffset, checkRaduis, groundLayer);

        // 墙体判断
        touchLeftWall = Physics2D.OverlapCircle((Vector2)transform.position + leftOffset, checkRaduis, groundLayer);
        touchRightWall = Physics2D.OverlapCircle((Vector2)transform.position + rightOffset, checkRaduis, groundLayer);
    }

    private void OnDrawGizmosSelected()
    {
        // 绘制监测区
        Gizmos.DrawWireSphere((Vector2)transform.position + bottomOffset, checkRaduis);
        Gizmos.DrawWireSphere((Vector2)transform.position + bottomLeftOffset, checkRaduis);
        Gizmos.DrawWireSphere((Vector2)transform.position + bottomRightOffset, checkRaduis);
        Gizmos.DrawWireSphere((Vector2)transform.position + leftOffset, checkRaduis);
        Gizmos.DrawWireSphere((Vector2)transform.position + rightOffset, checkRaduis);
    }
}

这段代码在运行起来之后，就会出现左、右、左下、右下、下共五个检测盒，并且能判断左边、右边、左下、右下、下是否有地面

即使野猪转向了，检测盒的范围也是正确的

野猪撞墙后等待几秒再修改方向

项目相关代码

代码仓库：https://gitee.com/nbda1121440/2DAdventure.git

标签：20240224_2055