XNA in Silverlight 5.0

 

 

XNA在Silverlight 5.0中变化了，和Silverlight 4.0不一样呢。

Silverlight 4.0中想使用XNA只能是WinPhone7才可以，Silverlight 5.0就不一样了，可以在PC平台上支持XNA开发，也就是说你的网站上可以直接使用XNA开发游戏了！

 

Silverlight 5.0使用XNA超级简单，XAML文件中定义一个DrawingSurface就可以，对应的实现2个函数OnDraw和OnLoaded，然后就结束了。

 

例如：

 

XAML文件中定义一个小DrawingSurface如下：
    <Canvas>
        <DrawingSurface Draw="OnDraw" Loaded="OnLoaded" Width="245" Height="222" Canvas.Left="50" Canvas.Top="86" />
    </Canvas>

 

对应的C#代码中实现2个函数OnDraw和OnLoaded：

        ContentManager contentManager;
        SpriteBatch spriteBatch;
        Texture2D background;

        private void OnLoaded(object sender,RoutedEventArgs e)
        {
            GraphicsDevice graphicsDevice = GraphicsDeviceManager.Current.GraphicsDevice;
            contentManager = new ContentManager(null)
            {
                RootDirectory = "Content"
            };
            spriteBatch = new SpriteBatch(graphicsDevice);
            background = contentManager.Load<Texture2D>("sunset");
        }

        private void OnDraw(object sender,DrawEventArgs e)
        {

            GraphicsDevice graphicsDevice = GraphicsDeviceManager.Current.GraphicsDevice;
            //
            graphicsDevice.Clear(Color.Black);
            // 画一张背景图，盖满 DrawingSurface
            spriteBatch.Begin(0,BlendState.AlphaBlend);
            spriteBatch.Draw(background,
                             new Rectangle(0,
                                 graphicsDevice.Viewport.Width,
                                 graphicsDevice.Viewport.Height),
                             Color.White);
            spriteBatch.End();
            // 强制刷新
            e.InvalidateSurface();
        }

 注意: 承载他的页面必须有这么一句

<param name="EnableGPUacceleration" value="true" />