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The skydome model has a BasicEffect linked to it, which you can use to draw it. As always, before rendering a model, you need to configure its effect. First, set the sky texture that you want to use in the model by means of basicEffect.Texture (this is necessary because no texture was imported with the sky model). Then, set the model s world and the camera s view and projection matrices to the basicEffect. Finally, draw the sky model. Notice that it is important to disable the depth buffer before drawing the sky model; because the sky is the farthest drawing object, you don t need to store its depth. Also, if you draw the sky model with the depth buffer enabled, you would need to enlarge the far plane distance of your camera, which will cause precision problems when drawing other objects closer to the camera. Following is the code for the SetEffectMaterial and Draw methods used to draw the sky:

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private void SetEffectMaterial(BasicEffect basicEffect) { BaseCamera activeCamera = cameraManager.ActiveCamera; // Texture material basicEffect.Texture = textureMaterial.Texture; basicEffect.TextureEnabled = true; // Transformation basicEffect.World = transformation.Matrix; basicEffect.View = activeCamera.View; basicEffect.Projection = activeCamera.Projection; } public override void Draw(GameTime time) { GraphicsDevice.RenderState.DepthBufferEnable = false; foreach (ModelMesh modelMesh in model.Meshes) { // We are only rendering models with BasicEffect foreach (BasicEffect basicEffect in modelMesh.Effects) SetEffectMaterial(basicEffect); modelMesh.Draw(); } GraphicsDevice.RenderState.DepthBufferEnable = true; base.Draw(time); }

The web application will need to draw Spring beans from a context. This means that the context must be available to filters, servlets, JSPs, and any other objects that will be encountered during the processing of a request.

In this section, you ll create some helper classes to manage the game input and settings, and to generate random values. You ll create all these classes inside the Helpers namespace.

The context loader listener is a standard Java listener implementation, and as such it is ideally situated to maintain state information during the life cycle of the web application that it is attached to. The context loader listener must be declared in your web application s deployment descriptor file (web.xml), as shown in Listing 6-1.

Earlier, we noted that your game can be played using the keyboard or the Xbox 360 gamepad. The XNA Framework has all the classes that you need to manage the input through the keyboard, gamepad, or mouse (supported only in Windows). However, you will want to handle the keyboard and gamepad simultaneously in order to streamline the helper classes and create more robust code. In this regard, a helper class could be useful. Also, the XNA input classes lack some features, such as checking when a key is first pressed (pressed when it is released), which you can add to the input helper class. In this section, you ll create a helper class for the keyboard and gamepad input, named InputHelper.

<listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> By default, this will read an XML bean configuration file from WEB-INF/applicationContext.xml and maintain the beans declared here until the web application is shut down. This default location can be overridden by using a context-param entry in web.xml, as shown in Listing 6-2.

Because you can play your game using the gamepad, you first map all the game actions to the gamepad, and then map the gamepad buttons to some keyboard keys. For example, you can define that the gamepad s A button is used to make the player jump. Then you can map the keyboard s spacebar to the gamepad s A button.

<context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> Here I instruct the listener to load the configuration file from the root of the classpath instead of the WEB-INF directory. ContextLoaderListener uses a property editor to parse the parameter values, so the normal syntax for specifying resource types (for example, the classpath: prefix) can be used as if this were a standard bean definition. You can specify multiple configuration files by providing a comma-separated list of resources for the parameters values.