www.pudn.com > IntroductionTo3DGameEngineDesign.rar > GameInput.cs
using System;
using System.Collections;
using System.Drawing;
using Microsoft.DirectX.DirectInput;
using Microsoft.DirectX;
namespace GameEngine
{
#region delegates
public delegate void ButtonAction();
public delegate void AxisAction(int nCount);
#endregion
///
/// Summary description for GameInput.
/// This class encapsulates the interface to the keyboard and mouse. It provides
/// a unified interface for the game engine where the status of any of these input devices
/// may be polled. More importantly it provides the capability to invoke a supplied method
/// whenever a mapped keyboard or mouse button is pressed.
///
public class GameInput : IDisposable
{
#region Attributes
public bool m_bInitialized = false;
private KeyboardState m_keydata = null;
private MouseState m_mousedata = new MouseState();
private JoystickState m_joystick = new JoystickState();
private int m_NumPov = 0;
private Device KeyboardDev = null;
private Device MouseDev = null;
private Device JoystickDev = null;
private bool m_bJoystickSet = false;
private ArrayList m_ActionMap = new ArrayList();
private ArrayList m_AxisActionMap = new ArrayList();
private int m_MouseX = 0;
private int m_MouseY = 0;
private int m_MouseZ = 0;
private static Point m_MousePoint;
private System.Windows.Forms.Form m_form = null;
#endregion
struct Mapping
{
public int key;
public ButtonAction action;
public bool bOnTransition;
}
struct AxisMapping
{
public int key;
public AxisAction action;
}
///
/// return a reference to the DirectInput device
///
///
/// Get the current mouse X value
///
public int GetMouseX()
{
int nResult = m_MouseX;
m_MouseX = 0;
return nResult;
}
///
/// Get the current mouse Y value
///
public int GetMouseY()
{
int nResult = m_MouseY;
m_MouseY = 0;
return nResult;
}
///
/// Get the current mouse Z value (mouse wheel)
///
public int GetMouseZ()
{
int nResult = m_MouseZ;
m_MouseZ = 0;
return nResult;
}
///
/// Get joystick axis data
///
public int GetJoystickX( )
{
if ( m_bJoystickSet )
{
return m_joystick.X;
}
else
{
return 0;
}
}
///
/// Get normalized joystick axis data
///
public float GetJoystickNormalX( )
{
if ( m_bJoystickSet )
{
return (float)m_joystick.X/(float)short.MaxValue;
}
else
{
return 0;
}
}
///
/// Get joystick axis data
///
public int GetJoystickY( )
{
if ( m_bJoystickSet )
{
return m_joystick.Y;
}
else
{
return 0;
}
}
///
/// Get normalized joystick axis data
///
public float GetJoystickNormalY( )
{
if ( m_bJoystickSet )
{
return (float)m_joystick.Y/(float)short.MaxValue;
}
else
{
return 0;
}
}
///
/// Get joystick axis data
///
public int GetJoystickZ( )
{
if ( m_bJoystickSet )
{
return m_joystick.Z;
}
else
{
return 0;
}
}
///
/// Get joystick button data
///
public bool GetJoystickButton( int nIndex )
{
if ( m_bJoystickSet && nIndex < 32 )
{
return m_joystick.GetButtons()[nIndex] != 0;
}
else
{
return false;
}
}
///
/// Get joystick slider data
///
public int GetJoystickSlider( int nIndex )
{
if ( m_bJoystickSet && nIndex < 2 )
{
return m_joystick.GetSlider()[nIndex];
}
else
{
return 0;
}
}
//Dispose method
public void Dispose()
{
KeyboardDev.Unacquire();
KeyboardDev.Dispose();
MouseDev.Unacquire();
MouseDev.Dispose();
if ( m_bJoystickSet )
{
JoystickDev.Unacquire();
JoystickDev.Dispose();
}
}
}
}