Unity 坦克动荡的碰撞反弹

最新推荐文章于 2024-01-04 10:05:29 发布

原创最新推荐文章于 2024-01-04 10:05:29 发布 · 2.5k 阅读

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本文介绍了一个使用Unity实现的射线碰撞检测脚本。该脚本通过发射射线并在遇到带有特定标签的障碍物（如墙壁）时进行反射处理。反射遵循光的反射定律，并在每个碰撞事件中更新射线的方向。

把这个脚本挂在球上就完事了

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

public class ray : MonoBehaviour
{
    public float Speed;
    public Vector3 direction;
    public Vector3 OUT;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        Debug.DrawLine(transform.position, transform.position + direction * 10, Color.red);
        Ray ray = new Ray(transform.position, direction);
        RaycastHit hit;
        if (Physics.Raycast(ray, out hit))
        {
            if (hit.collider.tag == "wall")
            {                          
                float normalAngle = (hit.transform.eulerAngles.z + 180) * Mathf.Deg2Rad;
                //法线的角度值与横杆相差90°，Mathf.Deg2Rad是一个常数，可直接将角度值转化为弧度值
                Vector3 nor = new Vector3(Mathf.Cos(normalAngle), Mathf.Sin(normalAngle), 0);
                if (Vector3.Angle(direction,nor)<90)
                {
                    nor = -nor;                 
                }
                Debug.DrawLine(hit.point, nor * 100 + hit.point);
                OUT = Vector3.Reflect(direction, nor);
                Debug.DrawLine(hit.point, hit.point + OUT,Color.green);
            }
        }
    }

    private void FixedUpdate()
    {
        this.transform.Translate(direction * Speed * Time.fixedDeltaTime, Space.World);
    }

    private void OnCollisionEnter(Collision collision)
    {
        direction = OUT;
    }
}