OpenSceneGraph/examples/osgdirectinput/DirectInputRegistry

/* OpenSceneGraph example, osgdirectinput.
*
*  Permission is hereby granted, free of charge, to any person obtaining a copy
*  of this software and associated documentation files (the "Software"), to deal
*  in the Software without restriction, including without limitation the rights
*  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
*  copies of the Software, and to permit persons to whom the Software is
*  furnished to do so, subject to the following conditions:
*
*  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
*  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
*  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
*  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
*  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
*  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
*  THE SOFTWARE.
*/

#ifndef OSGDIRECTINPUT_H
#define OSGDIRECTINPUT_H

#define DIRECTINPUT_VERSION 0x0800
#include <windows.h>
#include <dinput.h>
#include <iostream>

class JoystickEvent : public osg::Referenced
{
public:
    JoystickEvent() {}
    virtual ~JoystickEvent() {}
    DIJOYSTATE2 _js;
};

class DirectInputRegistry : public osg::Referenced
{
public:
    static DirectInputRegistry* instance()
    {
        static osg::ref_ptr<DirectInputRegistry> s_registry = new DirectInputRegistry;
        return s_registry.get();
    }
    
    LPDIRECTINPUT8& getDevice() { return _inputDevice; }
    LPDIRECTINPUTDEVICE8& getKeyboard() { return _keyboard; }
    LPDIRECTINPUTDEVICE8& getMouse() { return _mouse; }
    LPDIRECTINPUTDEVICE8& getJoyStick() { return _joystick; }
    
    bool valid() const { return _supportDirectInput; }
    
    bool initKeyboard( HWND handle );
    bool initMouse( HWND handle );
    bool initJoystick( HWND handle );
    
    void updateState( osgGA::EventQueue* eventQueue );
    
protected:
    DirectInputRegistry();
    virtual ~DirectInputRegistry();
    
    bool initImplementation( HWND handle, LPDIRECTINPUTDEVICE8 device, LPCDIDATAFORMAT format );
    void pollDevice( LPDIRECTINPUTDEVICE8 device );
    void releaseDevice( LPDIRECTINPUTDEVICE8 device );
    
    static BOOL CALLBACK EnumJoysticksCallback( const DIDEVICEINSTANCE* didInstance, VOID* );
    
    LPDIRECTINPUT8 _inputDevice;
    LPDIRECTINPUTDEVICE8 _keyboard;
    LPDIRECTINPUTDEVICE8 _mouse;
    LPDIRECTINPUTDEVICE8 _joystick;
    bool _supportDirectInput;
};

#endif