游戏对象运动简述

游戏对象运动简述

1. 游戏对象运动的本质是什么？

   游戏对象运动其实就是游戏对象在每一帧空间位置的变化，由于是3d物体，这里的位置不仅包括了对象的三维坐标系，还包括了对象的Rotation

2. 用三种方法实现物体的抛物线运动
   根据抛物线的公式
   $$S_y=v_{y}t-g{t}^2$$
   $$S_x=v_{x}t$$
   每一时刻给x，y轴增加一个$\Delta x$，$\Delta y$
   三种方法如下：

   using System.Collections;
   using System.Collections.Generic;
   using UnityEngine;
    
   public class Parabolic : MonoBehaviour {
    
       public float speed = 5;   // 移动速度
   	// Use this for initialization
   	void Start () {
   	}
   	
   	// Update is called once per frame
   	void Update () {
           Vector3 delta_vector = new Vector3(Time.deltaTime*5, -Time.deltaTime*(speed/10), 0);
           this.transform.position += delta_vector;
           speed++;
   	}
   }
   

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class Parabolic : MonoBehaviour {
 
    public float speed = 1;
	// Use this for initialization
	void Start () {
	}
	
	// Update is called once per frame
	void Update () {
 
        Vector3 delta_vector = new Vector3(Time.deltaTime * 5, -Time.deltaTime * (speed / 10), 0);
        transform.Translate(delta_vector);
        speed++;
    }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
public class move1 : MonoBehaviour {
 
    public float speed = 1;
	// Use this for initialization
	void Start () {
        Debug.Log("start!");
	}
	
	// Update is called once per frame
	void Update () {
 
        this.transform.position += Vector3.down * Time.deltaTime * (speed/10);
        this.transform.position += Vector3.right * Time.deltaTime * 5;
        speed++;
	}
}