基于C#弹幕类射击游戏的实现——（五）主场景

这里的的GameScene就是一个用于管理所有对象的类。整个游戏只有一个Scene

（其实还有MenuScene，LoadScene之类的，但这里没有做，在下一个游戏《超级玛丽》里会有详细的介绍）

先来看看申明部分

public static GameScene MainScene = null;

		private Bitmap mSurface;
		private Graphics mG;
		
		public Bitmap Surface
		{
			get
			{
				return mSurface;
			}
		}
		
		private int mFPS;
		public int FPS
		{
			get
			{
				return mFPS;
			}
		}
		
		public event RenderOverHandler RenderOver = null;
		
		private Timer timer;
		private Stopwatch watch;
		private int loopCount;
		private int timerCount;
		private int RunTime = 0;
		
		public GameBulletManager BulletManager;
        private GameBarrage mBarrage;
        
        public GameEnemyManager EnemyManager;
        public GameBossManager BossManager;
        
        public GamePlayer Player1;
        public Vector2 Player1Position
        {
        	get
        	{
        		return Player1.Position;
        	}
        }
        
        private int BackgroundIndex;
        
		private List[] mMapInfo;

东西挺多的，但其实只是各个游戏部件的整合而已。比如GameBulleManager、GameEnemyManager之类的，这些东西之后会介绍

然后是初始化，稍微多了一点点

 

public GameScene()
		{
            MainScene = this;

			mSurface = new Bitmap(Config.ScreenWidth, Config.ScreenHeight);
			mG = Graphics.FromImage(mSurface);
			
			BulletManager = new GameBulletManager(this);
			mBarrage = new GameBarrage(this);
			
			EnemyManager = new GameEnemyManager();
			BossManager = new GameBossManager();
			
			Player1 = new GamePlayer(this, new Vector2(200, 580), new Vector2(250, 250));
			
			this.mMapInfo = new List[Config.OneMapTime]; // 3分钟
			for ( int i = 0; i < Config.OneMapTime; i++ )
			{
				this.mMapInfo[i] = new List();
			}
			
			BackgroundIndex = 0;
			
			watch = new Stopwatch();
			watch.Start();
			
			timer = new Timer();
			timer.Interval = 33;
			timer.Tick += Loop;
			timer.Start();
			
			loopCount = 0;
			timerCount = 0;
			mFPS = 30;
			
			GameInit();
		}
		
		public void GameInit()
		{
			//AddEnemy(new Enemy6(new Vector2(200, 0)));
			AddBoss(new Boss1(mBarrage, new Vector2(200, 150)));
			
			RunTime = 0;
			
			//LoadMapInfo(Application.StartupPath + @"\MapInfo.txt");
		}

 

调用各个类的构造函数进行初始化，唯一注意的是开启了一个Timer控件来当做游戏的主循环。。。因为C# WINFORM很蛋疼，基于事件机制。。

 

接下来跳过载入地图信息。。。因为还没用到。

先来看看添加对象

public void AddBullet(GameBullet bullet)
        {
        	BulletManager.AddBullet(bullet);
        }
        
        public void AddEnemy(GameEnemy enemy)
        {
        	EnemyManager.AddEnemy(enemy);
        }
        
        public void AddBoss(GameBoss boss)
        {
        	BossManager.AddBoss(boss);
        }

其实都是调用的类本身的函数。。。。。

然后看看蛋疼的主循环

private void Loop(object sender, EventArgs e)
		{
			Update((float)watch.Elapsed.TotalMilliseconds / 1000.0f);
			Render();
			
			if ( RenderOver != null )
			{
				RenderOver(this);
			}
			
			loopCount++;
			
			watch.Stop();
			timerCount += (int)watch.Elapsed.TotalMilliseconds;
			
			// 一秒
			if ( timerCount >= 1000 )
			{
				RunTime++;
				// 处理地图信息
				DealMapInfo(RunTime - 1);
				
				// 处理FPS显示
				timerCount -= 1000;
				mFPS = loopCount;
				loopCount = 0;
				
				if ( mFPS < 30 )
				{
					if ( timer.Interval > 20 )
					{
						timer.Interval -= 10;
					}
				}
			}
			
			watch.Reset();
			watch.Start();
		}

 

看起来很多，其实大部分代码是用来计算FPS的~~~哈哈，很简单

 

接下来是Update和Render。都是调用具体类的响应方法。。。

private void Update(float elapsedTime)
		{
			Player1.Update(elapsedTime);
			EnemyManager.Update(elapsedTime);
			
			BulletManager.Update(elapsedTime);
			BossManager.Update(elapsedTime);
			
            GameBombManager.Update(elapsedTime);
            
            BackgroundIndex--;
            if ( BackgroundIndex < 0 )
            {
            	BackgroundIndex = Data.BackgroundSource.Height - Config.ScreenHeight;
            }
		}
		
		private void Render()
		{
			mG.Clear(Color.Black);

			mG.DrawImage(Data.BackgroundSource, new Rectangle(0, 0, Config.ScreenWidth, Config.ScreenHeight), new Rectangle(0, BackgroundIndex, Data.BackgroundSource.Width, Config.ScreenHeight), GraphicsUnit.Pixel);
			
			EnemyManager.Render(mG);
			BossManager.Render(mG);
			
			Player1.Render(mG);
			
			BulletManager.Render(mG);
            
            GameBombManager.Render(mG);
            
            mG.DrawString("Time:" + RunTime.ToString(), Data.NormalFont, Brushes.White, 0, 0);
		}

这么一来，框架大概有了，虽然比较混乱。