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)

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4
 5 public class MyGame : MonoBehaviour
 6 {
 7     //添加全局性的设置
 8     // Start is called before the first frame update
 9     void Start()
10     {
11         Application.targetFrameRate = 60;//帧数设为60
12     }
13
14     // Update is called once per frame
15     void Update()
16     {
17
18     }
19 }

三、制作子弹

• 制作预制体

子弹运动：

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4
 5 public class Mybullet : MonoBehaviour
 6 {
 7     public float speed = 3.5f;
 8     // Start is called before the first frame update
 9     void Start()
10     {
11
12     }
13
14     // Update is called once per frame
15     void Update()
16     {
17         float dy = speed * Time.deltaTime;
18         transform.Translate(0, dy, 0, Space.Self);
19         Vector3 sp = Camera.main.WorldToScreenPoint(transform.position);
20         if (sp.y > Screen.height)
21         {
22             Destroy(this.gameObject);
23         }
24     }

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

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4
 5 public class Myplane : MonoBehaviour
 6 {
 7     public GameObject MyPrefab;
 8     private float interval=0.4f;//间隔时间
 9     private float count = 0;
10
11     // Start is called before the first frame update
12     void Start()
13     {
14         Application.targetFrameRate = 60;
15     }
16
17     // Update is called once per frame
18     void Update()
19     {
20         count += Time.deltaTime;
21         if (count >= interval)
22         {
23             count = 0;
24             Fire();
25         }
26         //键盘控制飞机的左右移动
27         float step = 2.5f * Time.deltaTime;
28         if (Input.GetKey(KeyCode.LeftArrow))
29         {
30             transform.Translate(-step, 0, 0);
31         }
32         if (Input.GetKey(KeyCode.RightArrow))
33         {
34             transform.Translate(step, 0, 0);
35         }
36     }
37     void Fire()
38     {
39         GameObject bullet = Instantiate(MyPrefab);
40         bullet.transform.position = transform.position + new Vector3(0, 1f, 0);
41     }
42 }

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

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4
 5 public class Mymonster : MonoBehaviour
 6 {
 7     public float speed = 1.0f;
 8     // Start is called before the first frame update
 9     void Start()
10     {
11
12     }
13
14     // Update is called once per frame
15     void Update()
16     {
17         float dy = speed * Time.deltaTime;
18         transform.Translate(0, -dy, 0,Space.Self);
19         Vector3 sp = Camera.main.WorldToScreenPoint(transform.position);
20         if (sp.y <0)
21         {
22             Destroy(this.gameObject);
23         }
24     }
25 }

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4
 5 public class MonsterCtrl : MonoBehaviour
 6 {
 7     public GameObject monsterPerfab;
 8
 9     public Sprite[] images;
10
11     // Start is called before the first frame update
12     void Start()
13     {
14         InvokeRepeating("CreatMonster", 0.1f, 2f);
15     }
16
17     // Update is called once per frame
18     void Update()
19     {
20
21     }
22
23    void CreatMonster()
24     {
25         float x = Random.Range(-2, 2);
26         float y = 5;
27         GameObject monster = Instantiate(monsterPerfab);
28         monster.transform.position = new Vector3(x, y, 0);
29
30
31         //随机怪物
32         int index = Random.Range(0, images.Length);
33
34         SpriteRenderer renderer = monster.GetComponent<SpriteRenderer>();
35         renderer.sprite = this.images[index];
36
37         //怪物大小设为100px(像素)
38         Sprite sprite = this.images[index];
39         float imgWidth = sprite.rect.width;     // 图像的实际宽度
40         float scale = 100/imgWidth;            //缩放比例
41         monster.transform.localScale = new Vector3(scale, scale, scale);
42     }
43 }

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

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4
 5 public class Mybullet : MonoBehaviour
 6 {
 7     public float speed = 3.5f;
 8     // Start is called before the first frame update
 9     void Start()
10     {
11
12     }
13
14     // Update is called once per frame
15     void Update()
16     {
17         float dy = speed * Time.deltaTime;
18         transform.Translate(0, dy, 0, Space.Self);
19         Vector3 sp = Camera.main.WorldToScreenPoint(transform.position);
20         if (sp.y > Screen.height)
21         {
22             Destroy(this.gameObject);
23         }
24     }
25     private void OnTriggerEnter2D(Collider2D collision)
26     {
27         if (collision.tag.Equals("Monster"))
28         {
29             Destroy(collision.gameObject);
30             Destroy(this.gameObject);
31         }
32     }
33 }

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）

 1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4
 5 public class background : MonoBehaviour
 6 {
 7
 8     Transform bg1;
 9     Transform bg2;
10
11     public float speed = 1.0f;//向下运动速度
12     // Start is called before the first frame update
13     void Start()
14     {
15         //找出变化路径
16         bg1 = GameObject.Find("/背景/bg1").transform;
17         bg2 = GameObject.Find("/背景/bg2").transform;
18
19         //手动确定背景图片的位置从而无缝连接
20         bg1.position = new Vector3(0, 0, 0);
21         bg2.position = new Vector3(0, 10, 0);
22     }
23
24     // Update is called once per frame
25     void Update()
26     {
27         float dy = speed * Time.deltaTime;
28         bg1.Translate(0, -dy, 0);
29         bg2.Translate(0, -dy, 0);
30         //图片循环显示
31         if (bg1.position.y <= -10)
32         {
33             bg1.Translate(0, 20, 0);
34
35         }
36         if (bg2.position.y <= -10)
37         {
38             bg2.Translate(0, 20, 0);
39         }
40     }
41 }

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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