按时间计算抛物线

按时间计算抛物线轨迹

public float time = 2;  //代表从A点出发到B经过的时长

    public Transform point; //点(移动的)
    public Transform pointA;//点A(开始位置)
    public Transform pointB;//点B(结束位置)
    public Transform pointT;//点T

    public float g = -10;//重力加速度

    private Vector3 speed;//初速度向量
    private Vector3 Gravity;//重力向量
    void Start()
    {
        
    }
    public int stat = 0;    //改成1就开始
    float begintime;    //开始时间

    void Update()
    {
        if (stat == 1)
        {
            stat = 0;
                                                 
            //速度中间速度
            speed = new Vector3((pointB.position.x - pointA.position.x) / time,
                (pointB.position.y - pointA.position.y) / time - 0.5f * g * time, (pointB.position.z - pointA.position.z) / time);
            
            begintime = Time.time;
            pointT.position = speed;
        }

        float pass = Time.time - begintime;
        Gravity.y = 0.5f * g * pass * pass; //v =  1/2gt²
        point.transform.position = pointA.position + speed * pass + Gravity ;
    }

参考:http://www.cnblogs.com/jqg-aliang/p/4806017.html