如何在unity2D中建立一个枪械靶场？

Question

我想让我的网络在我的2D game.For中有一个射击场，如果子弹超出射程，那么销毁bullet.Is如果我不使用RayCast会有问题吗？我的Wepon脚本：

//Initialization
public GameObject Bullet;
public Transform FirePoint;
//WeponStats
public float BulletSpeed;
public int Damage;
public float Range;
private float TimeBtwShots;
public float StartTimeBtwShots;

private void Start()
{

}
private void Update()
{

    if (TimeBtwShots <= 0)
    {
        if (Input.GetButton("Fire1"))
        {
            Shoot();
            TimeBtwShots = StartTimeBtwShots;

        }
    }
    else
    {
        TimeBtwShots -= Time.deltaTime;
    }

}
void Shoot()
{
    GameObject bullet2 = Instantiate(Bullet, FirePoint.position, FirePoint.rotation);
    Rigidbody2D rb = bullet2.GetComponent<Rigidbody2D>();
    rb.AddForce(FirePoint.right * BulletSpeed, ForceMode2D.Impulse); 
}

至于子弹：

public float Delay;

void Start()
{
    Destroy(gameObject, Delay);
}
public void OnCollisionEnter2D(Collision2D other)
{
   if (other.gameObject.CompareTag("Enemy"))
    { //take damage function, nothing important
        Destroy(gameObject);
        Wepon_Script script_W = GameObject.FindGameObjectWithTag("Wepon").GetComponent<Wepon_Script>(); //Wepon script
        Enemy_Core script_E = GameObject.FindGameObjectWithTag("Enemy").GetComponent<Enemy_Core>(); //Enemy script
        script_E.TakeDamage(script_W.Damage);
    }
}

enter image description here

Answer 1

看起来你已经在延迟一段时间后销毁子弹了：

Destroy(gameObject, Delay);

如果你想让子弹在经过一段距离后被销毁，你可以将距离除以速度。

Destroy(gameObject, Range / BulletSpeed);

如果你想测量动态行进的距离，你可以在子弹里跟踪它。

void FixedUpdate()
{
    var distanceDelta = (transform.position - lastPos).magnitude;
    distanceTravelled += distanceDelta;
    lastPos = transform.position;

    if (distanceTravelled > Range) Destroy(gameObject);
}