Roll-A-Ball 游戏

1）学习资料

b站视频教程：https://www.bilibili.com/video/BV18W411671S/
文档：
* Roll-A-Ball 教程（一)，
* Roll-A-Ball 教程（二)
线上体验roll-a-ball成品
* http://www-personal.umich.edu/~ayarger/ShadowsInPlatformersWeb/

2）核心代码：

功能1：用W A S D控制小球移动的脚本：

新建一个C#脚本叫做sphereControll，添加到小球身上。

csharp 复制代码

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class sphereControll : MonoBehaviour
{
    // Update is called once per frame
    void Update()
    {
        if (Input.GetKey(KeyCode.W))
        {
            GetComponent<Rigidbody>().AddForce(new Vector3(0, 0, 10));
        }
        if (Input.GetKey(KeyCode.S))
        {
            GetComponent<Rigidbody>().AddForce(new Vector3(0, 0, -10));
        }
        if (Input.GetKey(KeyCode.A))
        {
            GetComponent<Rigidbody>().AddForce(new Vector3(-10, 0, 0));
        }
        if (Input.GetKey(KeyCode.D))
        {
            GetComponent<Rigidbody>().AddForce(new Vector3(10, 0, 0));
        }
        if (Input.GetKey(KeyCode.Space))
        {
            GetComponent<Rigidbody>().AddForce(new Vector3(0, 10, 0));
        }
    }
}

或者：用Input.getAxis控制小球移动的脚本：

csharp 复制代码

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class sphereControll : MonoBehaviour
{
    float horizontal;
    float vertical;
    public float speed=10;
    // Update is called once per frame
    void Update()
    {
        horizontal=Input.GetAxis("Horizontal");
        vertical=Input.GetAxis("Vertical");

        GetComponent<Rigidbody>().AddForce(new Vector3(horizontal,0,vertical)*speed);
    }
}

功能2：摄像机跟随脚本，

新建一个C#脚本叫做CameraController.cs，添加到摄像机身上。

csharp 复制代码

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraController : MonoBehaviour
{
    public GameObject player;
    Vector3 offset;

    void Start()
    {
        offset = transform.position - player.transform.position;
    }

    void Update()
    {
        transform.position = player.transform.position + offset;
    }
}

功能3：物块自动旋转

新建脚本，Rotator.cs，挂到要旋转的物体上。

csharp 复制代码

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Rotator : MonoBehaviour
{
    void Update()
    {
        transform.Rotate(new Vector3(15,30,45)*Time.deltaTime);
    }
}

功能4：碰到即消失。

在小球的脚本中，添加以下代码，若碰到了tag是pickup的物体，则销毁该物体

csharp 复制代码

void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.tag == "pickup")
        {
            Destroy(other.gameObject);
        }        
    }