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he previous chapter was about making interesting-looking landscape. This chapter is about populating a scene with 3D models and 2D images pretending to be 3D. The images act as ground cover, appearing to be 3D by rotating to always face the viewer. The user can navigate around the scene using keyboard controls. The basic approach introduced here is extended in several ways in future chapters. This chapter also considers how to make the scene s background more realistic. We say bye-bye to the sky-blue color of earlier examples and look at three different ways of utilizingtextured backgrounds.

A very simple demonstration of this is present in the example project: start a game and then click the End Game button on the game page to simulate the game finishing, and the high score page appears straight away All that a non-menu page needs to do to implement this is to set the static MainPageTargetGamePage property and then call NavigationServiceGoBack This will return to MainPage, which will detect the value in the TargetGamePage property and navigate immediately on to this page Listing 14 7 shows the code behind the End Game button..

innodb_log_group_home_dir=<path> innodb_max_dirty_pages_pct=<number> innodb_open_files=<number> innodb_safe_binlog isam max_heap_table_size=<number> myisam-recover[=<name>] myisam_sort_buffer_size=<number> ndbcluster skip-bdb

Listing 14 7. Taking the player directly from the game page to the high score page private void endGameButton_Click(object sender, RoutedEventArgs e) { // Go directly to the high score page MainPage.TargetGamePage = MainPage.GamePages.HighScorePage; NavigationService.GoBack(); } Have a play with the example project and see how it works. Some specific scenarios to try are as follows: Navigating back and forth between the pages by selecting them in the menu and pressing the Back button Ending a game and pressing Back from the high score page, which returns to the menu and not to the game Pressing Back from the menu page, which always closes the application

The techniques developed in this chapter are 3D model loading, 2D ground cover, keyboard-based movement, and creating a better background. They are demonstrated in a single example application called ObjView3D, shown in Figure 7-1.

MySQL replication enables you to create near-real-time duplication of your data onto another database server. Table 14-9 lists the configuration options for controlling replication. Replication is covered in 18. Table 14-9. Common Replication Configuration Options

There is, in fact, a little more navigation work to do when it comes to tombstoning and the application life cycle, but we will consider these details in the Application Life Cycle section later in this chapter.

The 3D models include a penguin, a pink giant, and a helicopter, while the trees and cacti are ground cover. The following is a description of the techniques: 3D model loading: Java 3D has built-in support for loading 3D modelsconstructed using the Wavefront OBJ format. ObjView3D employs a ModelLoader class that simplifies the process. Once loaded, a model can be translated, rotated, and/or scaled. 2D ground cover: The scene in ObjView3D is decorated with 2D images that rest on the floor (e.g., the trees in Figure 7-1) and always stay oriented toward the viewer, giving the impression that they re 3D. This is a cheap alternative to employing real 3D models. Keyboard-based movement: I ve been using the Java 3D OrbitBehavior class to change the camera s viewpoint up until now, but ObjView3D uses my KeyBehavior class instead. Key presses move the camera forward, backward, and left or right, rotate it left or right, and make it float up or down. However, the camera is prevented from descending through the floor. A better background: I look at three ways of creating a background that contains interesting detail and looks different when viewed from different places in the scene. The approaches are the following: 1. A texture-wrapped sphere. 2. A skybox (a Java 3D Box with textures pasted on to each face). 3. A skybox covered with Terragen-generated textures. Terragen is a freeware photorealistic landscape renderer available at http://www.planetside.co.uk/terragen. The skybox is built from quads, which gives the programmer more control over how it s positioned.