Unity炮弹拖尾和弓箭的抛物运动方法

最近遇到了一个很有趣的问题，就是关于炮弹（其实炮弹加上拖尾和弓箭是一样的，这里统一用炮弹说了）发射的问题，炮弹的发射很简单，但是关键在于如果动态的改变炮弹拖尾的方向，额，废话不多说了：

一、给出炮弹的目标点，和运行时的速度。（处理了拖尾效果）

public GameObject target;

public float moveSpeed = 10;

private float distance;

private bool isArived = false;

void Start()

{

distance = Vector3.Distance(this.transform.position, target.transform.position);

StartCoroutine(Shoot());

}

IEnumerator Shoot()

{

while (isArived == false)

{

Vector3 targetPosition = target.transform.position;

this.transform.LookAt(targetPosition);

float angle = Mathf.Min(1,Vector3.Distance(this.transform.position,targetPosition)/distance) *45; //弧度夹角

this.transform.rotation = this.transform.rotation *Quaternion.Euler(Mathf.Clamp(-angle,-45,45),0,0);

float currentDis = Vector3.Distance(this.transform.position,target.transform.position);

this.transform.Translate(Vector3.forward *Mathf.Min(moveSpeed *Time.deltaTime,currentDis));

if (currentDis < 0.2f)

{

isArived = true;

}

yield return null;

}

}