[转]物体的抛物线运动

using UnityEngine;
using System.Collections;

public class TestSpeed : MonoBehaviour {
    public float time=3;//代表从A点出发到B经过的时长
    public Transform pointA;//点A
    public Transform pointB;//点B
    public float g=-10;//重力加速度
    // Use this for initialization
    private Vector3 speed;//初速度向量
    private Vector3 Gravity;//重力向量
    void Start () {

        transform.position = pointA.position;//将物体置于A点
        //通过一个式子计算初速度
        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);
        Gravity = Vector3.zero;//重力初始速度为0
    }
    private float dTime=0;
    // Update is called once per frame
    void FixedUpdate () {

        Gravity.y = g * (dTime += Time.fixedDeltaTime);//v=at
        //模拟位移
        transform.Translate(speed*Time.fixedDeltaTime);
        transform.Translate(Gravity * Time.fixedDeltaTime);
    }
}

原文地址http://www.cnblogs.com/jqg-aliang/p/4806017.html