[unity]实现切水果游戏

叁歲伎倆 2022-07-14 14:19 300阅读 0赞

初学unity, 通过查阅资料以及自己的一些见解完成了自己做的第一款游戏.  
现在把代码分享出来, 仅供参考,不足之处还请指正。

游戏中有三个场景，主要用到六个c\#脚本：

<table> 
 <thead> 
  <tr> 
   <th>脚本</th> 
   <th>作用</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>buttonClick.cs</td> 
   <td>控制游戏中所有的按钮</td> 
  </tr> 
  <tr> 
   <td>appearFruits.cs</td> 
   <td>控制所有水果出现</td> 
  </tr> 
  <tr> 
   <td>cutFruit.cs</td> 
   <td>判断水果被切以及产生其他对象</td> 
  </tr> 
  <tr> 
   <td>knife.cs</td> 
   <td>控制切水果的的刀痕轨迹</td> 
  </tr> 
  <tr> 
   <td>scoreManager.cs</td> 
   <td>控制分数面板的脚本</td> 
  </tr> 
  <tr> 
   <td>healthManager.cs</td> 
   <td>控制玩家的生命值</td> 
  </tr> 
 </tbody> 
</table>

场景介绍:  
StartScence:  
![StartPage][]  
PlayScence:  
![PlayScence][]  
OverScence:  
![OverScence][]

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

接下来开始逐个介绍脚本:

## **一. buttonClick.cs** ##

该脚本需要控制游戏中所有的按钮，其中包括:  
1. 场景跳转的按钮  
2. 控制音乐播放的按钮

按钮通过NGUI的OnClick()函数触发的:

代码:

using UnityEngine;
    using System.Collections;
    
    public class ButtonClick : MonoBehaviour {
        public Sprite png1, png2;    // 静音时的贴图,与播放时的贴图 
        private SpriteRenderer spr;
        private bool flag;           //flag判断是否播放音乐
        private AudioSource bgm;     
        void Start()
        {
            spr = GetComponent<SpriteRenderer>();
            bgm = GetComponent<AudioSource>();
            flag = true;
        }
        void OnClick()                   //通过按钮Gameobject的名字判断是哪个按钮被点击
        {
            if (name == "playScence")                 //play按钮切换到开始场景  
                Application.LoadLevel("play");
            else if (name == "sound")       //音量按钮只需切换 SpriteRenderer组件中的贴图即可
            {
                if (flag)
                {
                    spr.sprite = png2;
                    bgm.Stop();
                }
                else
                {
                    bgm.Play();
                    spr.sprite = png1;
                }
                flag = !flag;
            }
            else if (name == "main")                           //回主界面按钮
                Application.LoadLevel("StartScence");    
            else
                Application.OpenURL("http://blog.csdn.net/axuan_k");
        }
    }

![play按钮用到的组件][play]  
图为play按钮用到的组件

## **二. appearFruits.cs** ##

控制游戏中所有水果从游戏下方以抛物线的形式出现；  
关键是要准备好需要用到的预制对象（各种水果） ,并添加到脚本上

代码:

using UnityEngine;
    using System.Collections;
    
    public class appearFruits : MonoBehaviour {
        public GameObject[] fruits;           //水果预制对象数组            
    
        private static  float interval;       //出现水果的间隔时间
        private float time;
    
        void Start () {
            interval = 0.9f;
            InvokeRepeating("Create", interval, interval);         //重复隔interval时间出现一个水果
        }
        void Create()
        {
            float y = -5.75f;
            float x = Random.Range(-6.5f, 6.5f);              //随机水果出现的x坐标
            GameObject fruit = Instantiate(fruits[Random.Range(0, fruits.Length)]) as GameObject;   //实例化
            fruit.transform.position = new Vector3(x, y, 0);
            //根据x坐标决定 水果飞行的 带方向初始速度范围
            float xSpeed = 0f;
            if (x <= -3f)
                xSpeed = Random.Range(2f, 4f);
            else if (x < 3f)
                xSpeed = Random.Range(-1f, 1f);
            else
                xSpeed = Random.Range(-4f, -2f);
            fruit.GetComponent<Rigidbody2D>().velocity = new Vector2(xSpeed, 14f);           //通过Rigidbody2D组件给水果一个初始速度
        }
        /*
        void Create()
        {
            GameObject obj = Instantiate(fruit[Random.Range(0, fruit.Length)], transform.position, Quaternion.AngleAxis(Random.Range(-30f, 30f), Vector3.back)) as GameObject;
            Rigidbody2D rgd = obj.GetComponent<Rigidbody2D>();               //得到新生成苹果的rigidbody 来给它一个速度
            rgd.velocity = Vector2.left * Random.Range(-10f, 10f);
            Destroy(obj, 2f);
        }
        */
    }

## **三.cutFruit.cs** ##

这个脚本需要添加到每一种水果的预制对象上面  
处理的逻辑包括：  
1. 判断水果是否被切中  
2. 产生水果碎片 以及背景污渍  
3. 出界面自动销毁  
4. 向scoreManager.cs脚本中的函数传递切中加减分的信息

代码:

using UnityEngine;
    using System.Collections;
    
    public class CutFruit : MonoBehaviour {
    
        public GameObject obj1, obj2;    //分开后的两边水果
        public GameObject[] wz;          //几种污渍背景
    
        private BoxCollider2D col;
        private Vector2[] vec = { Vector2.left, Vector2.right };   //切后的半截往两个方向飞出
        private GameObject scores;     //放置scoreManager.cs和healthManager.cs脚本的游戏对象
    
        void Start()
        {
            col = GetComponent<BoxCollider2D>();
            scores = GameObject.Find("score1");
        }
    
        private void CreateHalf(GameObject obj, int index)       //创建半个水果
        {
            obj = Instantiate(obj, transform.position, Quaternion.AngleAxis(Random.Range(-30f, 30f), Vector3.back)) as GameObject;
            Rigidbody2D rgd = obj.GetComponent<Rigidbody2D>();
            float v = Random.Range(2f, 4f);                        //随机飞出速度
            rgd.velocity = vec[index] * v;
            Destroy(obj, 2f);
        }
        private void Createwz()              //切开水果随机创建污渍
        {
            if (wz.Length == 0)              //仓鼠没有水果污渍
                return;
            GameObject obj = Instantiate(wz[Random.Range(0,wz.Length)], transform.position, Quaternion.AngleAxis(Random.Range(-30f, 30f), Vector3.back)) as GameObject;
            Destroy(obj, 1f);
        }
        void Update () {
            if (Input.GetMouseButton(0))
            {
                if (col.OverlapPoint(Camera.main.ScreenToWorldPoint(Input.mousePosition)))                //鼠标在当前水果2Dcollider内
                {
                    if (name == "jpg0(Clone)")                //金苹果+20分
                        scores.SendMessage("setScore", 20);
                    else if (name != "cs(Clone)")              //非仓鼠+1分
                        scores.SendMessage("setScore", 1);
                    else                                     //切开仓鼠扣血
                        scores.SendMessage("cutOne");
                    CreateHalf(obj1, 0);
                    CreateHalf(obj2, 1);
                    Createwz();
                    Destroy(this.gameObject);
                }
            }
            else if (this.transform.position.y <= -6f)         //水果掉落到范围外扣分自动销毁
            {
                scores.SendMessage("setScore", -1);
                Destroy(this.gameObject);
            }
        }
    }

![水果对象的组件以及用到的prefab][prefab]  
图为各种需要用到的预制对象prefab以及组件component

## **四.knife.cs** ##

打印出刀痕轨迹的脚本;  
为了实现折线的刀痕, 这里我用到了LineRenderer组件, 每隔固定时间记录鼠标所在的坐标从而完成对刀痕的渲染

代码:

using UnityEngine;
    using System.Collections;
    
    public class knife : MonoBehaviour {
        private LineRenderer myLinRenderer;     //该游戏对象的LineRenderer组件
    
        private int count;           //LineRenderer中position的数量
        private  static float timeInterval;     //每隔interval时间记录一次鼠标的坐标
        private float time;
        // Use this for initialization
        void Start()
        {
            count = 0;
            timeInterval = 0.3f;
            myLinRenderer = GetComponent<LineRenderer>();   
        }
    
        // Update is called once per frame
        void addline()
        {
            Vector3 pos = Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, 1));    //切换到世界坐标系
            myLinRenderer.SetVertexCount(++count);                      
            myLinRenderer.SetPosition(count - 1, pos);
            if(count==5)                                                 //清除刀痕 保证刀痕不能一直存在 无限延长
                myLinRenderer.SetVertexCount(count = 0);
        }
    
        void Update()
        {
            if (Input.GetMouseButtonDown(0))      //当鼠标左键按下的时候记录第一个点
            {
                myLinRenderer.SetVertexCount(count = 0);               //先清除之前未清除的刀痕
                GetComponent<AudioSource>().Play();
                time = timeInterval;
                addline();
            }
            else if (Input.GetMouseButton(0))          //鼠标按下时每隔interval秒记录一个点
            {
                time -= Time.deltaTime;
                if (time <= 0)
                {
                    addline();
                    time = timeInterval;
                }
            }
            else if (Input.GetMouseButtonUp(0))           //松开鼠标记录linerenderer的最后一个点
            {
                addline();
                time = timeInterval;                   //松开后interval秒清除刀痕
            }
            else
            {
                time -= Time.deltaTime;                //松开后interval秒清除刀痕
                if (time <= 0)
                    myLinRenderer.SetVertexCount(count = 0);
            }
        }
    }

![刀痕与组件][SouthEast]  
图为刀痕与组件

## **五. scoreManager.cs** ##

准备好实例化数字需要的预制对象，再用一个贴图数组保存所有数字的贴图.  
每收到一次分数变更消息, 销毁之前存在的分数, 逐个创建新的数字对象贴上对应的图片即可

代码:

using UnityEngine;
    using System.Collections;
    
    public class ScoreManager : MonoBehaviour
    {
        public GameObject DObj;              //所有数字对应的  预制对象（tag需要手动添加并更改为score,方便下面销毁）
        public Sprite[] Digits;           //每个数字对应的贴纸
    
        private int score;
        // Use this for initialization
        void Start()
        {
            score = 0;
            setScore(score);
        }
        void setScore(int newScore)
        {
            //先删除已存在的数字
            GameObject[] objs = GameObject.FindGameObjectsWithTag("score");              
            foreach (GameObject i in objs)
                Destroy(i);
    
            score += newScore;
            score = score<0?0:score;            //保证不出现负分
            string str = score.ToString();
            int cnt = 0;
            //逐个数字实例化预制对象
            foreach(char ch in str)
            {
                GameObject dobj = Instantiate(DObj) as GameObject;
                dobj.GetComponent<SpriteRenderer>().sprite = Digits[ch-'0'];            //贴上对应的贴图
                dobj.transform.position =new Vector2(-4.8f+0.6f*cnt, 4.05f);
                ++cnt;
            }
        }
    }

## **六. healthManager.cs** ##

将已创建的游戏对象(代表血量的X)作为脚本的参数, 失去一条生命,修改对应位置上游戏对象贴图的颜色。

代码:

using UnityEngine;
    using System.Collections;
    
    public class healthManager : MonoBehaviour {
        public SpriteRenderer[] spr;
         private int count;
        // Use this for initialization
        void Start () {
            count = 0;
        }
    
        // Update is called once per frame
        void cutOne()
        {
            spr[count++].color = Color.red;
            if (count == 5)
                Application.LoadLevel("gameOver");    
        }
    }

[StartPage]: /images/20220714/38bf99db72d540709bb26166c68f436a.png
[PlayScence]: /images/20220714/e03c33dfaa094de3b4365bc0e53ac129.png
[OverScence]: /images/20220714/2aecc3f165714b27af39a7d2882b8132.png
[play]: /images/20220714/084429f4a5224dc589f66ebcac4b0eec.png
[prefab]: /images/20220714/9542ee364ac9464880728c686e95da3e.png
[SouthEast]: /images/20220714/7e581f895ae94b6db074a371380a946a.png