Unity初级案例 - 坦克大战 Day 2

Dear 丶 2022-04-16 00:35 178阅读 0赞

**目录**

1.空气墙的制作，标签的添加

2.玩家无敌方法与死亡方法的编写

3.区别玩家的子弹与敌人的子弹

4.修复bug，制作敌人的子弹

5.敌人的制作，玩家产生效果的添加

6.用同样的产生特效随机生成两种敌人

7.敌人AI的编写

8.初始化地图工具的创建

9. 编写产生随机位置的方法

10.初始化地图其他的游戏物体

--------------------

### 1.空气墙的制作，标签的添加 ###

在Bullet添加完善碰撞检测

private void OnTriggerEnter2D(Collider2D collision)
        {
            switch (collision.tag)
            {
                case "Tank":
                    break;
                case "Heart":
                    break;
                case "Enemy":
                    break;
                case "Wall":
                    break;
                case "Barriar":
                    break;
                default:
                    break;
            }

### 2.玩家无敌方法与死亡方法的编写 ###

private bool isDefended = true;
        private float defendTimeVal = 3;
        public GameObject explosionPrefab;
        public GameObject defendEffectPrefab;
    
        //坦克的死亡方法
        private void Die()
        {
            if (isDefended)
            {
                return;
            }
            //产生爆炸特效
            Instantiate(explosionPrefab, transform.position, transform.rotation);
            //死亡
            Destroy(gameObject);
        }
    
        void Update () {
            //是否处于无敌状态
            if (isDefended)
            {
                defendEffectPrefab.SetActive(true);
                defendTimeVal -= Time.deltaTime;
                if(defendTimeVal <= 0)
                {
                    isDefended = false;
                    defendEffectPrefab.SetActive(false);
                }
            }
        }

### 3.区别玩家的子弹与敌人的子弹 ###

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class Bullet : MonoBehaviour {
    
        public float moveSpeed = 10;
    
        public bool isPlayerBullet;
    
    	// Update is called once per frame
    	void Update () {
            transform.Translate(transform.up * moveSpeed * Time.deltaTime, Space.World);
    	}
    
        private void OnTriggerEnter2D(Collider2D collision)
        {
            switch (collision.tag)
            {
                case "Tank":
                    if (!isPlayerBullet)
                    {
                        collision.SendMessage("Die");
                    }              
                    break;
                case "Heart":
                    collision.SendMessage("Die");
                    break;
                case "Enemy":
                    break;
                case "Wall":
                    Destroy(collision.gameObject);
                    Destroy(gameObject);
                    break;
                case "Barriar":
                    Destroy(gameObject);
                    break;
                default:
                    break;
            }
        }
    }

为坦克生成子弹的时候添加一条语句

GameObject bullet = Instantiate(bulletPrefab, transform.position, Quaternion.Euler(transform.eulerAngles + bulletEulerAngles));
    bullet.GetComponent<Bullet>().isPlayerBullet = true;

### 4.修复bug，制作敌人的子弹 ###

### 5.敌人的制作，玩家产生效果的添加 ###

添加敌人Enemy的脚本，新增Born脚本用于玩家的初始生成

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class Born : MonoBehaviour {
    
        public GameObject playerPrefab;
    
    	// Use this for initialization
    	void Start () {
            Invoke("BornTank", 1f);
            Destroy(gameObject, 1f);
    	}
    	
    	// Update is called once per frame
    	void Update () {
    		
    	}
    
        private void BornTank()
        {
            Instantiate(playerPrefab, transform.position, Quaternion.identity);
        }
    }

### 6.用同样的产生特效随机生成两种敌人 ###

在Born里添加代码

public GameObject[] enemyPrefabList;
    
        public bool createPlayer;
        private void BornTank()
        {
            if (createPlayer)
            {
                Instantiate(playerPrefab, transform.position, Quaternion.identity);
            }
            else
            {
                int num = Random.Range(0, 2);
                Instantiate(enemyPrefabList[num], transform.position, Quaternion.identity);
            }
            
        }

### 7.敌人AI的编写 ###

编写敌人自动攻击和移动的代码

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class Enemy : MonoBehaviour {
    
        //属性值
        public float moveSpeed = 3;
        private Vector3 bulletEulerAngles;
        private float v;
        private float h;
        
        //引用
        public Sprite[] tankSprites;//上 右 下 左
        public GameObject bulletPrefab;
        private SpriteRenderer sr;
        public GameObject explosionPrefab;
    
        //计时器
        private float time = 3f;
        private float timer = 0;
        private float timeValChangeDirection;
    
    
        private void Awake()
        {
            sr = GetComponent<SpriteRenderer>();
        }
    
        // Update is called once per frame
        void Update()
        {
            //攻击的时间间隔
            if (timer >= time)
            {
                Attack();
    
            }
            else
            {
                timer += Time.deltaTime;
            }
        }
    
        private void FixedUpdate()
        {
            Move();
        }
    
        //坦克的攻击方法
        private void Attack()
        {
            //子弹产生的角度：当前坦克的角度+子弹应该旋转的角度
            if (sr.sprite == tankSprites[2])
            {
                bulletEulerAngles = new Vector3(0, 0, -180);
            }
            else if (sr.sprite == tankSprites[3])
            {
                bulletEulerAngles = new Vector3(0, 0, 90);
            }
            else if (sr.sprite == tankSprites[1])
            {
                bulletEulerAngles = new Vector3(0, 0, -90);
            }
            else
            {
                bulletEulerAngles = new Vector3(0, 0, 0);
            }
    
            GameObject bullet = Instantiate(bulletPrefab, transform.position, Quaternion.Euler(transform.eulerAngles + bulletEulerAngles));
            bullet.GetComponent<Bullet>().isPlayerBullet = true;
            timer = 0;
        }
    
        //坦克的移动方法
        private void Move()
        {
            if(timeValChangeDirection >= 4)
            {
                int num = Random.Range(0, 8);
                if(num > 5)
                {
                    v = -1;
                    h = 0;
                }
                else if(num == 0)
                {
                    v = 1;
                    h = 0;
                }else if (num > 0 && num <= 2)
                {
                    h = -1;
                    v = 0;
                }else if(num >2&& num <= 4)
                {
                    h = 1;
                    v = 0;
                }
                timeValChangeDirection = 0;
            }
            else
            {
                timeValChangeDirection += Time.fixedDeltaTime;
            }
            
            transform.Translate(Vector3.up * v * moveSpeed * Time.fixedDeltaTime, Space.World);
            if (v < 0)
            {
                sr.sprite = tankSprites[2];
                //bulletEulerAngles = new Vector3(0, 0, -180);
            }
            else if (v > 0)
            {
                sr.sprite = tankSprites[0];
    
            }
    
            if (v != 0)
            {
                return;
            }
    
            
            transform.Translate(Vector3.right * h * moveSpeed * Time.fixedDeltaTime, Space.World);
            if (h < 0)
            {
                sr.sprite = tankSprites[3];
                //bulletEulerAngles = new Vector3(0, 0, 90);
            }
            else if (h > 0)
            {
                sr.sprite = tankSprites[1];
                //bulletEulerAngles = new Vector3(0, 0, -90);
            }
        }
    
        //坦克的死亡方法
        private void Die()
        {
            //产生爆炸特效
            Instantiate(explosionPrefab, transform.position, transform.rotation);
            //死亡
            Destroy(gameObject);
        }
    }

### 8.初始化地图工具的创建 ###

创建MapCreation，添加创建老家的方法

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class MapCreation : MonoBehaviour {
    
        //用来装饰初始化地图所需物体的数组
        //0.老家 1.墙 2.障碍 3.出生效果 4.河流 5.草 6.空气墙
        public GameObject[] item;
    
        private void Awake()
        {
            //实例化老家
            CreateItem(item[0], new Vector3(0, -8, 0), Quaternion.identity);
            //用墙把老家围起来
            CreateItem(item[1], new Vector3(-1, -8, 0), Quaternion.identity);
            CreateItem(item[1], new Vector3(1, -8, 0), Quaternion.identity);
            for(int i = -1; i < 2; i++)
            {
                CreateItem(item[1], new Vector3(i, -7, 0), Quaternion.identity);
            }
        }
    
        private void CreateItem(GameObject createGameObject,Vector3 createPosition,Quaternion createRotation)
        {
            GameObject itemGo = Instantiate(createGameObject, createPosition, createRotation);
            itemGo.transform.SetParent(gameObject.transform);
        }
    }

运行结果如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tvdXpodWFuamluZzE4NDk_size_16_color_FFFFFF_t_70][]

### 9. 编写产生随机位置的方法 ###

添加随机生成位置的方法，并且生成空气墙

//产生随机位置的方法
        private Vector3 CreateRandomPosition()
        {
            //不生产x=-10,10的两列，y=-8,8这两行的位置
            while (true)
            {
                Vector3 createPosition = new Vector3(Random.Range(-9, 10), Random.Range(-7, 8), 0);
                if (!HasThePosition(createPosition))
                {
                    return createPosition;
                }         
            }
        }
    
        //用来判断位置列表中是否有这个位置
        private bool HasThePosition(Vector3 createPos)
        {
            for (int i = 0; i < itemPositionList.Count; i++)
            {
                if(createPos == itemPositionList[i])
                {
                    return true;
                }
            }
            return false;
        }
    
        private void Awake()
        {
                    //实例化外围墙
            for(int i = -11; i < 12; i++)
            {
                CreateItem(item[6], new Vector3(i, 9, 0), Quaternion.identity);
            }
            for (int i = -11; i < 12; i++)
            {
                CreateItem(item[6], new Vector3(i, -9, 0), Quaternion.identity);
            }
            for (int i = -8; i < 9; i++)
            {
                CreateItem(item[6], new Vector3(-11, i, 0), Quaternion.identity);
            }
            for (int i = -8; i < 9; i++)
            {
                CreateItem(item[6], new Vector3(11, i, 0), Quaternion.identity);
            }
        }

### 10.初始化地图其他的游戏物体 ###

完善初始化地图

//产生敌人的方法
        private void CreateEnemy()
        {
            int num = Random.Range(0, 3);
            Vector3 EnemyPos = new Vector3();
            if(num == 0)
            {
                EnemyPos = new Vector3(-10, 8, 0);
            }
            else if (num == 1)
            {
                EnemyPos = new Vector3(0, 8, 0);
            }
            else                  
            {
                EnemyPos = new Vector3(10, 8, 0);
            }
            CreateItem(item[3], EnemyPos, Quaternion.identity);
        }
    
    
    //初始化玩家
            GameObject go = Instantiate(item[3], new Vector3(-2, -8, 0), Quaternion.identity);
            go.GetComponent<Born>().createPlayer = true;
    
            //产生敌人
            CreateItem(item[3], new Vector3(-10, 8, 0), Quaternion.identity);
            CreateItem(item[3], new Vector3(0, 8, 0), Quaternion.identity);
            CreateItem(item[3], new Vector3(10, 8, 0), Quaternion.identity);
    
            InvokeRepeating("CreateEnemy", 4, 5);
    
            //实例化地图
            for (int i = 0; i < 60; i++)
            {
                CreateItem(item[1], CreateRandomPosition(), Quaternion.identity);
            }
            for (int i = 0; i < 20; i++)
            {
                CreateItem(item[2], CreateRandomPosition(), Quaternion.identity);
            }
            for (int i = 0; i < 20; i++)
            {
                CreateItem(item[4], CreateRandomPosition(), Quaternion.identity);
            }
            for (int i = 0; i < 20; i++)
            {
                CreateItem(item[5], CreateRandomPosition(), Quaternion.identity);
            }

运行结果如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tvdXpodWFuamluZzE4NDk_size_16_color_FFFFFF_t_70 1][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tvdXpodWFuamluZzE4NDk_size_16_color_FFFFFF_t_70]: /images/20220416/375555c2b1c84adb9f388351b7eed7bf.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tvdXpodWFuamluZzE4NDk_size_16_color_FFFFFF_t_70 1]: /images/20220416/be8250b73f274158aefd04d64f821afd.png