Unity_飞机大战记录总结

记录步骤：win+R→PSR.exe

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一、竖屏设置

分辨率设为9：16

二、主控脚本

• 添加一个空节点，命名“游戏主控”
• 新建游戏的主控脚本，命名为MyGame.cs,方便管理(即，一些全局性的逻辑控制)
• 如有必要，修改主控脚本的Execution Order(优先级)

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

public class MyGame : MonoBehaviour
{
    //添加全局性的设置
    // Start is called before the first frame update
    void Start()
    {
        Application.targetFrameRate = 60;//帧数设为60
    }

    // Update is called once per frame
    void Update()
    {
        
    }
}

三、制作子弹

• 制作预制体

子弹运动：

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

public class Mybullet : MonoBehaviour
{
    public float speed = 3.5f;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        float dy = speed * Time.deltaTime;
        transform.Translate(0, dy, 0, Space.Self);
        Vector3 sp = Camera.main.WorldToScreenPoint(transform.position);
        if (sp.y > Screen.height)
        {
            Destroy(this.gameObject);
        }
    }

 四、制作飞机

• 控制飞机左右移动
• 添加预制体资源：public GameObject myPrefab;
• 断开预制体：unpack Prefab

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

public class Myplane : MonoBehaviour
{
    public GameObject MyPrefab;
    private float interval=0.4f;//间隔时间
    private float count = 0;

    // Start is called before the first frame update
    void Start()
    {
        Application.targetFrameRate = 60;
    }

    // Update is called once per frame
    void Update()
    {
        count += Time.deltaTime;
        if (count >= interval)
        {
            count = 0;
            Fire();
        }
        //键盘控制飞机的左右移动
        float step = 2.5f * Time.deltaTime;
        if (Input.GetKey(KeyCode.LeftArrow))
        {
            transform.Translate(-step, 0, 0);
        }
        if (Input.GetKey(KeyCode.RightArrow))
        {
            transform.Translate(step, 0, 0);
        }
    }
    void Fire()
    {
        GameObject bullet = Instantiate(MyPrefab);
        bullet.transform.position = transform.position + new Vector3(0, 1f, 0);
    }
}

五、制作怪物

• 添加到游戏主控MonsterCtrl.cs
• 不断生成
• 随机头像
• 大小优化
• 随机位置

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

public class Mymonster : MonoBehaviour
{
    public float speed = 1.0f;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        float dy = speed * Time.deltaTime;
        transform.Translate(0, -dy, 0,Space.Self);
        Vector3 sp = Camera.main.WorldToScreenPoint(transform.position);
        if (sp.y <0)
        {
            Destroy(this.gameObject);
        }
    }
}

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

public class MonsterCtrl : MonoBehaviour
{
    public GameObject monsterPerfab;

    public Sprite[] images;

    // Start is called before the first frame update
    void Start()
    {
        InvokeRepeating("CreatMonster", 0.1f, 2f);
    }

    // Update is called once per frame
    void Update()
    {
        
    }

   void CreatMonster()
    {
        float x = Random.Range(-2, 2);
        float y = 5;
        GameObject monster = Instantiate(monsterPerfab);
        monster.transform.position = new Vector3(x, y, 0);


        //随机怪物
        int index = Random.Range(0, images.Length);

        SpriteRenderer renderer = monster.GetComponent<SpriteRenderer>();
        renderer.sprite = this.images[index];

        //怪物大小设为100px(像素)
        Sprite sprite = this.images[index];  
        float imgWidth = sprite.rect.width;     // 图像的实际宽度
        float scale = 100/imgWidth;            //缩放比例
        monster.transform.localScale = new Vector3(scale, scale, scale);
    }
}

六、击中目标

• “子弹”与“怪物”之间的碰撞处理：

1. 添加Rigidbody 2D及Collider 2D
2. 添加Tag：player，Bullet，Monster（用于身份识别）
3. 修改MyBullet.cs,添加碰撞处理

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

public class Mybullet : MonoBehaviour
{
    public float speed = 3.5f;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        float dy = speed * Time.deltaTime;
        transform.Translate(0, dy, 0, Space.Self);
        Vector3 sp = Camera.main.WorldToScreenPoint(transform.position);
        if (sp.y > Screen.height)
        {
            Destroy(this.gameObject);
        }
    }
    private void OnTriggerEnter2D(Collider2D collision)
    {
        if (collision.tag.Equals("Monster"))
        {
            Destroy(collision.gameObject);
            Destroy(this.gameObject);
        }
    }
}

七、游戏背景

• 添加到游戏主控background.cs
• Order in Layor:-10
• 俩图片无缝连接：Deplicate（复制）

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

public class background : MonoBehaviour
{

    Transform bg1;
    Transform bg2;

    public float speed = 1.0f;//向下运动速度
    // Start is called before the first frame update
    void Start()
    {
        //找出变化路径
        bg1 = GameObject.Find("/背景/bg1").transform;
        bg2 = GameObject.Find("/背景/bg2").transform;

        //手动确定背景图片的位置从而无缝连接
        bg1.position = new Vector3(0, 0, 0);
        bg2.position = new Vector3(0, 10, 0);
    }

    // Update is called once per frame
    void Update()
    {
        float dy = speed * Time.deltaTime;
        bg1.Translate(0, -dy, 0);
        bg2.Translate(0, -dy, 0);
        //图片循环显示
        if (bg1.position.y <= -10)
        {
            bg1.Translate(0, 20, 0);

        }
        if (bg2.position.y <= -10)
        {
            bg2.Translate(0, 20, 0);
        }
    }
}

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• 物理系统：Physics

由物理规律起作用的系统：刚体（RigidBody）→指物理系统中的物体（具有质量、速度、可反弹...）

Add Component→Physics 2D→Rigidbody 2D

刚体有三种类型：

Dynamic:普通刚体，有质量，有速度

Static：静态刚体，质量无穷大，无速度（适用于建筑物、地面等固定不动的物体）

Kinematic:运动学刚体，无质量（忽略物理规律的刚体，一般用于碰撞检测）

只有添加撞体（Collider）组件后，才有碰撞的计算

Add Component→Physics 2D→Box Collider 2D

• • 方形：Box Collider 2D
  • 圆形：Circle Collider 2D 
  • 不规则边缘：Edge Collider 2D
  • 胶囊形状：Capsule Collider 2D

刚体的反弹：

　　1.在project窗口里，Create→Physics Material 2D...

• • Friction：摩擦系数
  • Bounciness：弹性系数，设为1（完全反弹（无能量损耗））　

　　　　2.选择“皮球”的Rigidbody2D组件

• • Material:选择....材质　　

　　　　3.运行游戏，观察反弹