Game Programming Class3

Class 3 Input Handling

Input

input from Game Controller and Keyboard

GamePad

XNA has builtin support for up to 4 game controllers. The default controller is a x-box controller. X-Box Controller The Controller is accessed through the GamePad Object and the GamePadState Structure reference types <csharp>

        //Get and instance of the gamePadState Structure
        GamePadState gamePad1State = GamePad.GetState(PlayerIndex.One); 
        

Since the Keyboard structure is Windows only we need to use some preprocessor directives

        #if !XBOX360
           #region KeyBoard
           KeyboardState keyboardState = Keyboard.GetState();
        #endif
        

</csharp>

Angle Measured in Radians

using atan2 to get the angle from the direction vector

Vibration

<csharp>

       GamePad.SetVibration(PlayerIndex.One, 1.0f, 1.0f);  //left low freq motor right high freq motor
       

</csharp>

Classes and Generics

Shooting with pacman

in class

PacMan Project with input

Homework

• Create an XNA project that uses the Keyboard for input.
• Chapter 5 in XNA Game Studio 2.0 Writing Text
• Chapter 7 in XNA Game Studio Express