CATDirectInput.cpp

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/// \file  CATDirectInput.h
/// \brief Basic DirectInput wrapper
/// \ingroup CAT
///
/// Copyright (c) 2002-2008 by Michael Ellison.
/// See COPYING.txt for the \ref gaslicense License (MIT License).
///
// $Author: mikeellison $
// $Date: 2008-01-23 06:02:38 -0600 (Wed, 23 Jan 2008) $
// $Revision:   $
// $NoKeywords: $

#include "CATInternal.h"
#include "CATDirectInput.h"
#include "CATDIJoystick.h"

// Constructor
CATDirectInput::CATDirectInput()
{
    fDirectInput    = 0;    
    fInitialized    = false;
    fUserCallback   = 0;
    fUserParam      = 0;
}

// Initialize direct input
bool CATDirectInput::Init()
{
    if (DI_OK == DirectInput8Create((HINSTANCE)::GetModuleHandle(0) ,DIRECTINPUT_VERSION,IID_IDirectInput8W, (void**)&fDirectInput, NULL))
    {
        fInitialized = true;
    }
    return fInitialized;
}

CATDirectInput::~CATDirectInput()
{
    if (fDirectInput)
        fDirectInput->Release();
    
    fDirectInput = 0;

    while (fJoystickList.size())
    {
        DIDEVICEINSTANCE* inputDevInfo = fJoystickList[0];
        delete inputDevInfo;
        fJoystickList.erase(fJoystickList.begin());
    }

}

// Start the control panel for direct input
void CATDirectInput::DoControlPanel(HWND parent)
{
    if (fDirectInput)
    {
        fDirectInput->RunControlPanel(parent, 0);
    }
}

// Enumerate joysticks and callback the caller
void CATDirectInput::EnumJoysticks(EnumJoysticksCallback callback, void *userParam)
{
    fUserCallback = callback;
    fUserParam = userParam;

    this->fDirectInput->EnumDevices(
                        DI8DEVCLASS_GAMECTRL, 
                        DIJoysticksCB, 
                        this, 
                        DIEDFL_ATTACHEDONLY);
}


// Static direct input callback
BOOL CALLBACK CATDirectInput::DIJoysticksCB(    LPCDIDEVICEINSTANCE lpddi,  LPVOID pvRef )
{
    CATDirectInput* cdi = (CATDirectInput*)pvRef;
    
    // Copy device instance data and add to list
    DIDEVICEINSTANCE* inputDevInfo = new DIDEVICEINSTANCE;
    memcpy(inputDevInfo,lpddi,sizeof(DIDEVICEINSTANCE));
    cdi->fJoystickList.push_back(inputDevInfo);
    
    // Call user callback
    if (cdi->fUserCallback)
    {
        cdi->fUserCallback(inputDevInfo->tszInstanceName, cdi->fUserParam);
    }

    return TRUE;
}


// Create a joystick interface
CATJoystick* CATDirectInput::CreateJoystick(const CATWChar* name)
{   
    for (CATUInt32 i = 0; i < fJoystickList.size(); i++)
    {
        DIDEVICEINSTANCE* inputDevInfo;
        if (inputDevInfo = fJoystickList[i])
        {
            if (0 == _wcsicmp(inputDevInfo->tszInstanceName,name))
            {
                CATDIJoystick* joystick = 0;
                joystick    = new CATDIJoystick(this->fDirectInput);
                if (joystick->Init(inputDevInfo))
                {
                    return joystick;
                }               
                delete joystick;
                joystick = 0;
            }
        }
    }

    return 0;
}

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