Unity3D - 2

Unty3D - 2

• 游戏对象运动的本质：

游戏对象运动的本质是游戏对象间相对位置的改变。

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• 用至少三种方法实现物体的抛物线运动:

  1. 直接改变物体的的位置：Y=X^2

     using System.Collections;
     using System.Collections.Generic;
     using UnityEngine;
     
     public class movetest : MonoBehaviour {
     
         // Use this for initialization
         void Start () {
             
         }
     
         // Update is called once per frame
         void Update () {
             this.transform.position += Vector3.right * Time.deltaTime;
             this.transform.position = new Vector3(this.transform.position.x, this.transform.position.x * this.transform.position.x, 0);
         }
     }

  2. 使用transform.Translate方法，根据加速度改变Y轴上的速度，然后让物体运动方向和速度发生改变实现抛物线：

     using System.Collections;
         using System.Collections.Generic;
         using UnityEngine;
     
         public class movetest : MonoBehaviour {
     
             // Use this for initialization
             void Start () {
                 
             }
             float t = 1;
             // Update is called once per frame
             void Update () {
                 t += Time.deltaTime;
                 float speed = 1 * t;
                 transform.Translate(transform.forward* 1 *Time.deltaTime, Space.World);
                 transform.Translate(transform.up * t * Time.deltaTime, Space.World);
             }
         }

  3. 将物体定义为刚体，给予重力和初速度实现抛物运动：

     using System.Collections;
     using System.Collections.Generic;
     using UnityEngine;
     
     public class movetest : MonoBehaviour {
     
         // Use this for initialization
         void Start () {
             
         }
         
         // Update is called once per frame
         void Update () {
             Rigidbody a = this.gameObject.AddComponent<Rigidbody>();
             a.useGravity = true;
             a.velocity = Vector3.left * 5;
         }
     }

  4. Vector3.Slerp插值实现：

         using System.Collections;
         using System.Collections.Generic;
         using UnityEngine;
     
         public class movetest : MonoBehaviour {
     
             // Use this for initialization
             void Start () {
                 
             }
             Vector3 Speed = new Vector3(10,0,0),SpeedDown = new Vector3(0,0,0);
             // Update is called once per frame
             void Update () {
                 Vector3 NextPosition = transform.position + Speed * Time.deltaTime - SpeedDown * Time.deltaTime;
                 SpeedDown.y += 1*(Time.deltaTime);
                 NextPosition.y -= 0.5F *1* (Time.deltaTime)* (Time.deltaTime);
                 transform.position = Vector3.Slerp(transform.position, NextPosition, 1);
             }
         }

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• 模拟太阳系

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• 牧师与魔鬼