一、游戲說明

飛碟游戲
游戲內容:

游戲有 n 個 round，每個 round 都包括10 次 trial;

每個 trial 的飛碟的色彩，大小;發射位置，速度，角 度，受該 round 的 ruler 控制;

每個 trial 的飛碟有隨機性，總體難度隨 round 上升;

鼠標點中得分，得分規則按色彩、大小、速度不同計算，規則可自由設定。

游戲涉及的知識點:

世界與屏幕坐標、射線與碰撞、動態修改shader；

支持mono的單實例、游戲對象工廠、擴展游戲對象屬 性與行為的方法。

二、相關知識

1.為什么需要工廠對象

• 游戲對象的創建與銷毀高成本，必須減少銷毀次數。如游戲中子彈
• 屏蔽創建與銷毀的業務邏輯，使程序易于擴展

2.diskFactory的設計

• 前面游戲，由導演、場記、運動管理師、演員構成。
• 新游戲中，場記請了記分員、飛碟管理員
• 其中記分員按飛碟的數據計分，記分員擁有計分規則
• 場記只需要管理出飛碟規則與管理碰撞就可以了

3.帶緩存工廠模式的實現

• getDisk(ruler) 偽代碼
  IF (free list has disk) THEN
  a_disk = remove one from list ELSE
  a_disk = clone from Prefabs
  ENDIF
  Set DiskData of a_disk with the ruler Add a_disk to used list
  Return a_disk
• FreeDisk(disk)
  Find disk in used list
  IF (not found) THEN THROW exception Move disk from used to free list

三、關鍵實現分析

1.首先是飛碟信息的存儲類
掛在飛碟上制作為預制

//射擊當前飛碟得分public int score = 1;//飛碟顏色設置 public Color color = Color.white;//飛碟初始的位置 public Vector3 direction;//飛碟大小 public Vector3 scale = new Vector3( 1 ,0.5f, 1);

2.飛碟工廠類
主要有的功能為：飛碟預制的生產、飛碟的選擇、未使用飛碟的回收

生產：

//在空閑的飛碟列表中嘗試找到符合tag的飛碟for(int i=0;i<free.Count;i++){if(free[i].tag == tag){disk_prefab = free[i].gameObject;free.Remove(free[i]);break;}} //如果空閑列表中沒有所需求的預制飛碟，則需要生產預制飛碟if(disk_prefab == null){if (tag == "disk1"){disk_prefab = Instantiate(Resources.Load<GameObject>("Prefabs/disk1"), new Vector3(0, start_y, 0), Quaternion.identity);}else if (tag == "disk2"){disk_prefab = Instantiate(Resources.Load<GameObject>("Prefabs/disk2"), new Vector3(0, start_y, 0), Quaternion.identity);}else{disk_prefab = Instantiate(Resources.Load<GameObject>("Prefabs/disk3"), new Vector3(0, start_y, 0), Quaternion.identity);} //設定顏色、位置等屬性float ran_x = Random.Range(-1f, 1f) < 0 ? -1 : 1;disk_prefab.GetComponent<Renderer>().material.color = disk_prefab.GetComponent<DiskData>().color;disk_prefab.GetComponent<DiskData>().direction = new Vector3(ran_x, start_y, 0);disk_prefab.transform.localScale = disk_prefab.GetComponent<DiskData>().scale;} //添加到使用的列表中used.Add(disk_prefab.GetComponent<DiskData>());

飛碟的選擇：
不同的回合對應不同的飛碟

if (round == 1){choice = Random.Range(0, scope1);}else if(round == 2){choice = Random.Range(0, scope2);}else{choice = Random.Range(0, scope3);}

飛碟回收：
未被擊中的飛碟，將其回收至空閑列表中，并將其移出正在使用的飛碟列表

for(int i = 0;i < used.Count; i++){if (disk.GetInstanceID() == used[i].gameObject.GetInstanceID()){used[i].gameObject.SetActive(false);free.Add(used[i]);used.Remove(used[i]);break;}}

3.場景控制FirstSceneControl類
負責游戲場景中的各種事件的處理，以及游戲規則如游戲開始結束等的執行。
發送飛碟的處理：

void Update (){if(game_start){//游戲結束時取消發送飛碟if (game_over){CancelInvoke("LoadResources");}//游戲開始的判定if (!playing_game){InvokeRepeating("LoadResources", 1f, speed);playing_game = true;}SendDisk();//難度加大的配置if (score_recorder.score >= score_round2 && round == 1){round = 2;speed = speed - 0.6f;CancelInvoke("LoadResources");playing_game = false;}else if (score_recorder.score >= score_round3 && round == 2){round = 3;speed = speed - 0.5f;CancelInvoke("LoadResources");playing_game = false;}}}

擊中飛碟的相關判斷：

public void Hit(Vector3 pos){Ray ray = Camera.main.ScreenPointToRay(pos);RaycastHit[] hits;hits = Physics.RaycastAll(ray);bool not_hit = false;for (int i = 0; i < hits.Length; i++){RaycastHit hit = hits[i];if (hit.collider.gameObject.GetComponent<DiskData>() != null){for (int j = 0; j < disk_notshot.Count; j++){if (hit.collider.gameObject.GetInstanceID() == disk_notshot[j].gameObject.GetInstanceID()){not_hit = true;}}if(!not_hit){return;}disk_notshot.Remove(hit.collider.gameObject);score_recorder.Record(hit.collider.gameObject);Transform explode = hit.collider.gameObject.transform.GetChild(0);explode.GetComponent<ParticleSystem>().Play();StartCoroutine(WaitingParticle(0.08f, hit, disk_factory, hit.collider.gameObject));break;}}}

回收飛碟

IEnumerator WaitingParticle(float wait_time, RaycastHit hit, DiskFactory disk_factory, GameObject obj){yield return new WaitForSeconds(wait_time);hit.collider.gameObject.transform.position = new Vector3(0, -9, 0);disk_factory.FreeDisk(obj);}

4.飛碟飛行動作

public static diskFlyAction GetSSAction(Vector3 direction, float angle, float power){diskFlyAction action = CreateInstance<diskFlyAction>();if (direction.x == -1){action.start_vector = Quaternion.Euler(new Vector3(0, 0, -angle)) * Vector3.left * power;}else{action.start_vector = Quaternion.Euler(new Vector3(0, 0, angle)) * Vector3.right * power;}return action;}

5.GUI界面渲染

void OnGUI (){bold_style.normal.textColor = new Color(1, 0, 0);bold_style.fontSize = 16;text_style.normal.textColor = new Color(0,0,0, 1);text_style.fontSize = 16;score_style.normal.textColor = new Color(1,0,1,1);score_style.fontSize = 16;over_style.normal.textColor = new Color(1, 0, 0);over_style.fontSize = 25;if (game_start){if (Input.GetButtonDown("Fire1")){Vector3 pos = Input.mousePosition;action.Hit(pos);}GUI.Label(new Rect(10, 5, 200, 50), "分數:", text_style);GUI.Label(new Rect(55, 5, 200, 50), action.GetScore().ToString(), score_style);GUI.Label(new Rect(Screen.width - 120, 5, 50, 50), "血量:", text_style);//顯示血量for (int i = 0; i < life; i++){GUI.Label(new Rect(Screen.width - 75 + 10 * i, 5, 50, 50), "+", bold_style);}if (life == 0){high_score = high_score > action.GetScore() ? high_score : action.GetScore();GUI.Label(new Rect(Screen.width / 2 - 20, Screen.width / 2 - 250, 100, 100), "游戲結束", over_style);GUI.Label(new Rect(Screen.width / 2 - 10, Screen.width / 2 - 200, 50, 50), "你獲得的分數:", text_style);GUI.Label(new Rect(Screen.width / 2 + 50, Screen.width / 2 - 200, 50, 50), high_score.ToString(), text_style);if (GUI.Button(new Rect(Screen.width / 2 - 20, Screen.width / 2 - 150, 100, 50), "重新開始")){life = 6;action.ReStart();return;}action.GameOver();}}else{if (GUI.Button(new Rect(Screen.width / 2 - 20, Screen.width / 2-290, 100, 50), "開始游戲")){game_start = true;action.BeginGame();}}}

四、成品

視頻
最后感謝師兄的博客給了很大的幫助！不然真的很難實現。

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