编写一个简单的鼠标打飞碟（Hit UFO）游戏
- 游戏内容要求
- 游戏的要求
- 游戏实现
  - 文件结构
  - c#文件
    - DiskFactory
    - DiskFactoryController
    - FirstController
    - RoundController
    - SceneController
    - ScoreController
    - UserInterface
资源

编写一个简单的鼠标打飞碟（Hit UFO）游戏

游戏内容要求

游戏有 n 个 round，每个 round 都包括10 次 trial
每个 trial 的飞碟的色彩、大小、发射位置、速度、角度、同时出现的个数都可能不同。它们由该 round 的 ruler 控制
每个 trial 的飞碟有随机性，总体难度随 round 上升
鼠标点中得分，得分规则按色彩、大小、速度不同计算，规则可自由设定

游戏的要求
使用带缓存的工厂模式管理不同飞碟的生产与回收，该工厂必须是场景单实例的！
尽可能使用前面 MVC 结构实现人机交互与游戏模型分离

游戏实现

总的来说，这次代码写的比较随意，冗余部分过多，而且没有很好的组织结构，函数的布置相对来说有点混乱，所以为了弥补这方面的不足，尽量做了好看的效果，加了一点粒子系统，当然也是参考了往届的博客。

文件结构

文本结构

资源结构

预制结构

c#文件

DiskFactory

单例模式，得到飞碟id，得到飞碟对象，释放飞碟对象，为了避免开销大的问题，没有用destory，而是设置为diskList[id].SetActive(false);

using UnityEngine;
using System.Collections;
using System.Collections.Generic;public class DiskFactory : System.Object
{private static DiskFactory _instance;private static List<GameObject> diskList; public GameObject disk;      public static DiskFactory getInstance(){if (_instance == null){_instance = new DiskFactory();diskList = new List<GameObject>();}return _instance;}public int getDiskId(){for (int i = 0; i < diskList.Count; ++i){if (!diskList[i].activeInHierarchy){return i;}}diskList.Add(GameObject.Instantiate(disk) as GameObject);return diskList.Count - 1;}public GameObject getDiskObject(int id){if (id > -1 && id < diskList.Count){return diskList[id];}return null;}public void free(int id){if (id > -1 && id < diskList.Count){diskList[id].GetComponent<Rigidbody>().velocity = Vector3.zero;//diskList[id].rigidbody.velocity = Vector3.zero;diskList[id].transform.localScale = disk.transform.localScale;diskList[id].SetActive(false);}}
}

DiskFactoryController

初始化disk，这次程序中的所有初始化，都是在类中声明为public，然后将预制拖到文件当中，而没有用Instantiate函数，感觉这样比较符合我的编程习惯。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;public class DiskFactoryController : MonoBehaviour
{public GameObject disk;void Awake(){DiskFactory.getInstance().disk = disk;}
}

FirstController

包括场景的设置，发射飞碟的提示，发射飞碟，释放飞碟，得分。

发射飞碟，大小，颜色，位置，方向都是随机的，但是没有与分数挂钩，都是打中一个得十分，每回合打完第十次进入下一回合，打完三回合，结束游戏。
FixedUpdate中用timeToNextEmission -= Time.deltaTime实现倒计时。

using UnityEngine;
using System.Collections;
using System.Collections.Generic;public class FirstController : MonoBehaviour
{public Color[] TotalColor = {Color.black,Color.blue,Color.cyan,Color.green,Color.grey,Color.red,Color.yellow };public float EmissionDelay = 1f;public float timeToNextEmission;private bool isCounting;private bool isShooting;public bool getIsCounting() { return isCounting; }public bool getIsShooting() { return isShooting; }private List<GameObject> disks = new List<GameObject>();   private List<int> diskIds = new List<int>();               private int diskScale;                  private Color diskColor;               private Vector3 emissionPosition;          private Vector3 emissionDirection;         private float emissionSpeed;private int emissionNumber;                 private bool isEmissionEnable;               private SceneController scene;private RoundController roundController;void Awake(){scene = SceneController.getInstance();scene.setFirstController(this);}public void setting(int scale, Color color, Vector3 emitPos, Vector3 emitDir, float speed, int num){diskScale = scale;diskColor = color;emissionPosition = emitPos;emissionDirection = emitDir;emissionSpeed = speed;emissionNumber = num;}public void MakeEmissionDiskable(){if (!isCounting && !isShooting){timeToNextEmission = EmissionDelay;isEmissionEnable = true;}}void emissionDisks(){scene.setTrial(scene.getTrial()+1);for (int i = 0; i < emissionNumber; ++i){diskIds.Add(DiskFactory.getInstance().getDiskId());disks.Add(DiskFactory.getInstance().getDiskObject(diskIds[i]));diskScale = Random.Range(1,3);disks[i].transform.localScale *= diskScale;int chooseColor = Random.Range(0, 7);disks[i].GetComponent<Renderer>().material.color = TotalColor[chooseColor];disks[i].transform.position = new Vector3(Random.Range(-2.5f,2.5f), emissionPosition.y + i, emissionPosition.z);disks[i].SetActive(true);emissionDirection.x = emissionDirection.x * Random.Range(-1, 1);disks[i].GetComponent<Rigidbody>().AddForce(emissionDirection * Random.Range(emissionSpeed * 5, emissionSpeed * 10) / 10, ForceMode.Impulse);}if(scene.getTrial() == 10){scene.nextRound();}if(scene.getRound() == 4){scene.gameOver();}}void freeADisk(int i){DiskFactory.getInstance().free(diskIds[i]);disks.RemoveAt(i);diskIds.RemoveAt(i);}void FixedUpdate(){if (timeToNextEmission > 0){isCounting = true;timeToNextEmission -= Time.deltaTime;}else{isCounting = false;if (isEmissionEnable){emissionDisks();isEmissionEnable = false;isShooting = true;}}}void Update(){for (int i = 0; i < disks.Count; i++){if (!disks[i].activeInHierarchy){  scene.getScoreController().hitDisk(); freeADisk(i);}else if (disks[i].transform.position.y < 0){   scene.getScoreController().hitGround(scene.getRound()); freeADisk(i);}}if (disks.Count == 0){isShooting = false;}}
}

RoundController

回合控制，一共设置三关，除了速度，数量是真正预设的，其他的都会被被发射之前随机设置，第一关每次一个，速度为2，第二关每次两个，速度为4，第三关每次3此，速度为8。

using UnityEngine;
using UnityEngine.UI;
using System.Collections;public class RoundController : MonoBehaviour
{private Color color;private Vector3 emissionPositon;private Vector3 emissionDiretion;private float speed;private SceneController scene;public int trial = 0;void Awake(){SceneController.getInstance().setRoundController(this);scene = SceneController.getInstance();}void Start(){scene.nextRound();}public void loadRoundData(int round){trial = 0;switch (round){case 1:    color = Color.green;emissionPositon = new Vector3(-2.5f, 0.2f, -5f);emissionDiretion = new Vector3(24.5f, 40.0f, 67f);speed = 2;SceneController.getInstance().getFirstController().setting(1, color, emissionPositon, emissionDiretion.normalized, speed, 1);break;case 2:    color = Color.red;emissionPositon = new Vector3(2.5f, 0.2f, -5f);emissionDiretion = new Vector3(-24.5f, 35.0f, 67f);speed = 4;SceneController.getInstance().getFirstController().setting(1, color, emissionPositon, emissionDiretion.normalized, speed, 2);break;case 3:color = Color.cyan;emissionPositon = new Vector3(2.5f, 0.2f, -5f);emissionDiretion = new Vector3(-24.5f, 35.0f, 67f);speed = 8;SceneController.getInstance().getFirstController().setting(1, color, emissionPositon, emissionDiretion.normalized, speed, 3);break;}}
}

SceneController

实现一些基本函数，没有在SceneController中实现其他的类的实例化，但是在用到的其他类的Awake函数中，调用set…函数，使得可以用其他类的函数，

using UnityEngine;
using System.Collections;public interface GameInterface
{void MakeEmissionDiskable();bool isCounting();bool isShooting();int getRound();int getScore();int getTimeToNextEmissionTime();void nextRound();void setScore(int point);void setRound(int input);int getTrial();void setTrial(int input);void gameOver();
}public class SceneController : System.Object, GameInterface
{private static SceneController _instance;private RoundController _roundController;private FirstController _firstController;private ScoreController _scoreController;private UserInterface _userInterface;private int _round;private int _score;private int _trial;public bool isGameOver;public static SceneController getInstance(){if (_instance == null){_instance = new SceneController();}return _instance;}public void setFirstController(FirstController input){_firstController = input;}internal FirstController getFirstController(){return _firstController;}public void setScoreController(ScoreController input){_scoreController = input;}internal ScoreController getScoreController(){return _scoreController;}internal UserInterface getUserInterface(){return _userInterface;}public void setUserInterface(UserInterface input){_userInterface = input;}public void setRoundController(RoundController input){_roundController = input;}internal RoundController getRoundController(){return _roundController;}public void MakeEmissionDiskable(){_firstController.MakeEmissionDiskable();}public bool isCounting(){return _firstController.getIsCounting();}public bool isShooting(){return _firstController.getIsShooting();}public int getRound(){return _round;}public void setRound(int input){_round = input;}public int getScore(){return _score;}public int getTimeToNextEmissionTime(){return (int)_firstController.timeToNextEmission + 1;}public void setScore(int input){_score = input;}public void nextRound(){_roundController.loadRoundData(++_round);}public int getTrial(){return _roundController.trial;}public void setTrial(int input){_roundController.trial = input;}public void gameOver(){isGameOver = true;_userInterface.gameOver();}
}

ScoreController

分数管理，击中一个10分，一个落地，第一关扣5分，第二关扣20分，第三关扣45分。

using UnityEngine;
using System.Collections;public class ScoreController : MonoBehaviour
{private int oneDiskScore = 10;private int oneDiskFail = 5;private SceneController scene;void Awake(){scene = SceneController.getInstance();scene.setScoreController(this);}public void hitDisk(){scene.setScore(scene.getScore() + oneDiskScore);}public void hitGround(int input){scene.setScore(scene.getScore() - oneDiskFail * input * input);}
}

UserInterface

用户界面，包括射击子弹，粒子系统，界面提示。游戏结束后，按space空格键可以重新开始，每次射击有0.25秒的间隔。

using UnityEngine;
using UnityEngine.UI;
using System.Collections;public class UserInterface : MonoBehaviour
{public Text mainText;   public Text scoreText;  public Text roundText; private int round; public GameObject bullet;          public ParticleSystem explosion;    public float fireRate = .25f;      public float speed = 500f;public bool isGameOver = false;private float nextFireTime;private GameInterface gameInterface;private SceneController scene;public void Awake(){scene = SceneController.getInstance();scene.setUserInterface(this);}void Start(){bullet = GameObject.Instantiate(bullet) as GameObject;explosion = GameObject.Instantiate(explosion) as ParticleSystem;gameInterface = SceneController.getInstance() as GameInterface;}public void gameOver(){isGameOver = true;mainText.text = "GameOver,put down SPACE to Reset";}void Update(){if(Input.GetKeyDown("space") && isGameOver){scene.setRound(0);scene.nextRound();isGameOver = false;}if (!isGameOver){if (gameInterface.isCounting()){//mainText.text = ((int)gameInterface.getTimeToNextEmissionTime()).ToString();mainText.text = "Trial " + (gameInterface.getTrial() + 1).ToString();}else{gameInterface.MakeEmissionDiskable();if (gameInterface.isShooting()){mainText.text = "";}if (gameInterface.isShooting() && Input.GetMouseButtonDown(0) && Time.time > nextFireTime){nextFireTime = Time.time + fireRate;Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);bullet.GetComponent<Rigidbody>().velocity = Vector3.zero;//bullet.rigidbody.velocity = Vector3.zero;                     bullet.transform.position = transform.position;bullet.GetComponent<Rigidbody>().AddForce(ray.direction * speed, ForceMode.Impulse);RaycastHit hit;if (Physics.Raycast(ray, out hit) && hit.collider.gameObject.tag == "Disk"){explosion.transform.position = hit.collider.gameObject.transform.position;explosion.GetComponent<Renderer>().material.color = hit.collider.gameObject.GetComponent<Renderer>().material.color;//explosion.renderer.material.color = hit.collider.gameObject.renderer.material.color;explosion.Play();hit.collider.gameObject.SetActive(false);}}}roundText.text = "Round: " + gameInterface.getRound().ToString();scoreText.text = "Score: " + gameInterface.getScore().ToString();if (round != gameInterface.getRound()){round = gameInterface.getRound();mainText.text = "Round " + round.ToString() + " !";}}}
}

资源

视频及资源

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