Input and user interface-camera

Camera

It is important to process input and manage game screens. When you implement all game screens, you will see a more professional and better game.

For the game itself, especially if it is 3D, if you want to move freely in the game world, you need a camera class. Chapter 2 introduces the simplecamera class to move and zoom in a simple 3D environment. There are also more interesting and useful camera classes: spacecamera and chasecamera in rocket Commander games. XNa shooter requires a very simple camera. You can reuse the simplecamera class to move the camera to observe the target location.

Figure 10-10 compares the camera classes used in this book. Here we will discuss the spacecamera class, and the following chapters will discuss the chasecamera class. Simplecamera inherits from the gamecomponent class and you can easily add a new camera class.

Figure 10-10