DOOM-3-BFG/neo/sys/win32/win_input.cpp

/*
===========================================================================

Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company. 

This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").  

Doom 3 BFG Edition Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Doom 3 BFG Edition Source Code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

#pragma hdrstop
#include "../../idlib/precompiled.h"
#include "../sys_session_local.h"

#include "win_local.h"

#define DINPUT_BUFFERSIZE           256

/*
============================================================

DIRECT INPUT KEYBOARD CONTROL

============================================================
*/

bool IN_StartupKeyboard() {
    HRESULT hr;
    bool    bExclusive;
    bool    bForeground;
    bool    bImmediate;
    bool    bDisableWindowsKey;
    DWORD   dwCoopFlags;

	if (!win32.g_pdi) {
		common->Printf("keyboard: DirectInput has not been started\n");
		return false;
	}

	if (win32.g_pKeyboard) {
		win32.g_pKeyboard->Release();
		win32.g_pKeyboard = NULL;
	}

    // Detrimine where the buffer would like to be allocated 
    bExclusive         = false;
    bForeground        = true;
    bImmediate         = false;
    bDisableWindowsKey = true;

    if( bExclusive )
        dwCoopFlags = DISCL_EXCLUSIVE;
    else
        dwCoopFlags = DISCL_NONEXCLUSIVE;

    if( bForeground )
        dwCoopFlags |= DISCL_FOREGROUND;
    else
        dwCoopFlags |= DISCL_BACKGROUND;

    // Disabling the windows key is only allowed only if we are in foreground nonexclusive
    if( bDisableWindowsKey && !bExclusive && bForeground )
        dwCoopFlags |= DISCL_NOWINKEY;

    // Obtain an interface to the system keyboard device.
    if( FAILED( hr = win32.g_pdi->CreateDevice( GUID_SysKeyboard, &win32.g_pKeyboard, NULL ) ) ) {
		common->Printf("keyboard: couldn't find a keyboard device\n");
        return false;
	}
    
    // Set the data format to "keyboard format" - a predefined data format 
    //
    // A data format specifies which controls on a device we
    // are interested in, and how they should be reported.
    //
    // This tells DirectInput that we will be passing an array
    // of 256 bytes to IDirectInputDevice::GetDeviceState.
    if( FAILED( hr = win32.g_pKeyboard->SetDataFormat( &c_dfDIKeyboard ) ) )
        return false;
    
    // Set the cooperativity level to let DirectInput know how
    // this device should interact with the system and with other
    // DirectInput applications.
    hr = win32.g_pKeyboard->SetCooperativeLevel( win32.hWnd, dwCoopFlags );
    if( hr == DIERR_UNSUPPORTED && !bForeground && bExclusive ) {
        common->Printf("keyboard: SetCooperativeLevel() returned DIERR_UNSUPPORTED.\nFor security reasons, background exclusive keyboard access is not allowed.\n");
        return false;
    }

    if( FAILED(hr) ) {
        return false;
	}

    if( !bImmediate ) {
        // IMPORTANT STEP TO USE BUFFERED DEVICE DATA!
        //
        // DirectInput uses unbuffered I/O (buffer size = 0) by default.
        // If you want to read buffered data, you need to set a nonzero
        // buffer size.
        //
        // Set the buffer size to DINPUT_BUFFERSIZE (defined above) elements.
        //
        // The buffer size is a DWORD property associated with the device.
        DIPROPDWORD dipdw;

        dipdw.diph.dwSize       = sizeof(DIPROPDWORD);
        dipdw.diph.dwHeaderSize = sizeof(DIPROPHEADER);
        dipdw.diph.dwObj        = 0;
        dipdw.diph.dwHow        = DIPH_DEVICE;
        dipdw.dwData            = DINPUT_BUFFERSIZE; // Arbitary buffer size

        if( FAILED( hr = win32.g_pKeyboard->SetProperty( DIPROP_BUFFERSIZE, &dipdw.diph ) ) )
            return false;
    }

    // Acquire the newly created device
    win32.g_pKeyboard->Acquire();

	common->Printf( "keyboard: DirectInput initialized.\n");
    return true;
}

/*
==========================
IN_DeactivateKeyboard
==========================
*/
void IN_DeactivateKeyboard() {
	if (!win32.g_pKeyboard) {
		return;
	}
	win32.g_pKeyboard->Unacquire( );
}

/*
============================================================

DIRECT INPUT MOUSE CONTROL

============================================================
*/

/*
========================
IN_InitDirectInput
========================
*/

void IN_InitDirectInput() {
    HRESULT		hr;

	common->Printf( "Initializing DirectInput...\n" );

	if ( win32.g_pdi != NULL ) {
		win32.g_pdi->Release();			// if the previous window was destroyed we need to do this
		win32.g_pdi = NULL;
	}

    // Register with the DirectInput subsystem and get a pointer
    // to a IDirectInput interface we can use.
    // Create the base DirectInput object
	if ( FAILED( hr = DirectInput8Create( GetModuleHandle(NULL), DIRECTINPUT_VERSION, IID_IDirectInput8, (void**)&win32.g_pdi, NULL ) ) ) {
		common->Printf ("DirectInputCreate failed\n");
    }
}

/*
========================
IN_InitDIMouse
========================
*/
bool IN_InitDIMouse() {
    HRESULT		hr;

	if ( win32.g_pdi == NULL) {
		return false;
	}

	// obtain an interface to the system mouse device.
	hr = win32.g_pdi->CreateDevice( GUID_SysMouse, &win32.g_pMouse, NULL);

	if (FAILED(hr)) {
		common->Printf ("mouse: Couldn't open DI mouse device\n");
		return false;
	}

    // Set the data format to "mouse format" - a predefined data format 
    //
    // A data format specifies which controls on a device we
    // are interested in, and how they should be reported.
    //
    // This tells DirectInput that we will be passing a
    // DIMOUSESTATE2 structure to IDirectInputDevice::GetDeviceState.
    if( FAILED( hr = win32.g_pMouse->SetDataFormat( &c_dfDIMouse2 ) ) ) {
		common->Printf ("mouse: Couldn't set DI mouse format\n");
		return false;
	}
    
	// set the cooperativity level.
	hr = win32.g_pMouse->SetCooperativeLevel( win32.hWnd, DISCL_EXCLUSIVE | DISCL_FOREGROUND);

	if (FAILED(hr)) {
		common->Printf ("mouse: Couldn't set DI coop level\n");
		return false;
	}


    // IMPORTANT STEP TO USE BUFFERED DEVICE DATA!
    //
    // DirectInput uses unbuffered I/O (buffer size = 0) by default.
    // If you want to read buffered data, you need to set a nonzero
    // buffer size.
    //
    // Set the buffer size to SAMPLE_BUFFER_SIZE (defined above) elements.
    //
    // The buffer size is a DWORD property associated with the device.
    DIPROPDWORD dipdw;
    dipdw.diph.dwSize       = sizeof(DIPROPDWORD);
    dipdw.diph.dwHeaderSize = sizeof(DIPROPHEADER);
    dipdw.diph.dwObj        = 0;
    dipdw.diph.dwHow        = DIPH_DEVICE;
    dipdw.dwData            = DINPUT_BUFFERSIZE; // Arbitary buffer size

    if( FAILED( hr = win32.g_pMouse->SetProperty( DIPROP_BUFFERSIZE, &dipdw.diph ) ) ) {
		common->Printf ("mouse: Couldn't set DI buffersize\n");
		return false;
	}

	IN_ActivateMouse();

	// clear any pending samples
	int	mouseEvents[MAX_MOUSE_EVENTS][2];
	Sys_PollMouseInputEvents( mouseEvents );

	common->Printf( "mouse: DirectInput initialized.\n");
	return true;
}


/*
==========================
IN_ActivateMouse
==========================
*/
void IN_ActivateMouse() {
	int i;
	HRESULT hr;

	if ( !win32.in_mouse.GetBool() || win32.mouseGrabbed || !win32.g_pMouse ) {
		return;
	}

	win32.mouseGrabbed = true;
	for ( i = 0; i < 10; i++ ) {
		if ( ::ShowCursor( false ) < 0 ) {
			break;
		}
	}

	// we may fail to reacquire if the window has been recreated
	hr = win32.g_pMouse->Acquire();
	if (FAILED(hr)) {
		return;
	}

	// set the cooperativity level.
	hr = win32.g_pMouse->SetCooperativeLevel( win32.hWnd, DISCL_EXCLUSIVE | DISCL_FOREGROUND);
}

/*
==========================
IN_DeactivateMouse
==========================
*/
void IN_DeactivateMouse() {
	int i;

	if (!win32.g_pMouse || !win32.mouseGrabbed ) {
		return;
	}

	win32.g_pMouse->Unacquire();

	for ( i = 0; i < 10; i++ ) {
		if ( ::ShowCursor( true ) >= 0 ) {
			break;
		}
	}
	win32.mouseGrabbed = false;
}

/*
==========================
IN_DeactivateMouseIfWindowed
==========================
*/
void IN_DeactivateMouseIfWindowed() {
	if ( !win32.cdsFullscreen ) {
		IN_DeactivateMouse();
	}
}

/*
============================================================

  MOUSE CONTROL

============================================================
*/


/*
===========
Sys_ShutdownInput
===========
*/
void Sys_ShutdownInput() {
	IN_DeactivateMouse();
	IN_DeactivateKeyboard();
	if ( win32.g_pKeyboard ) {
		win32.g_pKeyboard->Release();
		win32.g_pKeyboard = NULL;
	}

    if ( win32.g_pMouse ) {
		win32.g_pMouse->Release();
		win32.g_pMouse = NULL;
	}

    if ( win32.g_pdi ) {
		win32.g_pdi->Release();
		win32.g_pdi = NULL;
	}
}

/*
===========
Sys_InitInput
===========
*/
void Sys_InitInput() {
	common->Printf ("\n------- Input Initialization -------\n");
	IN_InitDirectInput();
	if ( win32.in_mouse.GetBool() ) {
		IN_InitDIMouse();
		// don't grab the mouse on initialization
		Sys_GrabMouseCursor( false );
	} else {
		common->Printf ("Mouse control not active.\n");
	}
	IN_StartupKeyboard();

	common->Printf ("------------------------------------\n");
	win32.in_mouse.ClearModified();
}

/*
==================
IN_Frame

Called every frame, even if not generating commands
==================
*/
void IN_Frame() {
	bool	shouldGrab = true;

	if ( !win32.in_mouse.GetBool() ) {
		shouldGrab = false;
	}
	// if fullscreen, we always want the mouse
	if ( !win32.cdsFullscreen ) {
		if ( win32.mouseReleased ) {
			shouldGrab = false;
		}
		if ( win32.movingWindow ) {
			shouldGrab = false;
		}
		if ( !win32.activeApp ) {
			shouldGrab = false;
		}
	}

	if ( shouldGrab != win32.mouseGrabbed ) {
		if ( usercmdGen != NULL ) {
			usercmdGen->Clear();
		}

		if ( win32.mouseGrabbed ) {
			IN_DeactivateMouse();
		} else {
			IN_ActivateMouse();

#if 0	// if we can't reacquire, try reinitializing
			if ( !IN_InitDIMouse() ) {
				win32.in_mouse.SetBool( false );
				return;
			}
#endif
		}
	}
}


void	Sys_GrabMouseCursor( bool grabIt ) {
	win32.mouseReleased = !grabIt;
	if ( !grabIt ) {
		// release it right now
		IN_Frame();
	}
}

//=====================================================================================

static DIDEVICEOBJECTDATA polled_didod[ DINPUT_BUFFERSIZE ];  // Receives buffered data 

static int diFetch;
static byte toggleFetch[2][ 256 ];


#if 1
// I tried doing the full-state get to address a keyboard problem on one system,
// but it didn't make any difference

/*
====================
Sys_PollKeyboardInputEvents
====================
*/
int Sys_PollKeyboardInputEvents() {
    DWORD              dwElements;
    HRESULT            hr;

    if( win32.g_pKeyboard == NULL ) {
        return 0;
	}
    
    dwElements = DINPUT_BUFFERSIZE;
    hr = win32.g_pKeyboard->GetDeviceData( sizeof(DIDEVICEOBJECTDATA),
                                     polled_didod, &dwElements, 0 );
    if( hr != DI_OK ) 
    {
        // We got an error or we got DI_BUFFEROVERFLOW.
        //
        // Either way, it means that continuous contact with the
        // device has been lost, either due to an external
        // interruption, or because the buffer overflowed
        // and some events were lost.
        hr = win32.g_pKeyboard->Acquire();

		

		// nuke the garbage
		if (!FAILED(hr)) {
			//Bug 951: The following command really clears the garbage input.
			//The original will still process keys in the buffer and was causing
			//some problems.
			win32.g_pKeyboard->GetDeviceData( sizeof(DIDEVICEOBJECTDATA), NULL, &dwElements, 0 );
			dwElements = 0;
		}
        // hr may be DIERR_OTHERAPPHASPRIO or other errors.  This
        // may occur when the app is minimized or in the process of 
        // switching, so just try again later 
    }

    if( FAILED(hr) ) {
        return 0;
	}

	return dwElements;
}

#else

/*
====================
Sys_PollKeyboardInputEvents

Fake events by getting the entire device state
and checking transitions
====================
*/
int Sys_PollKeyboardInputEvents() {
    HRESULT            hr;

    if( win32.g_pKeyboard == NULL ) {
        return 0;
	}
    
	hr = win32.g_pKeyboard->GetDeviceState( sizeof( toggleFetch[ diFetch ] ), toggleFetch[ diFetch ] );
    if( hr != DI_OK ) 
    {
        // We got an error or we got DI_BUFFEROVERFLOW.
        //
        // Either way, it means that continuous contact with the
        // device has been lost, either due to an external
        // interruption, or because the buffer overflowed
        // and some events were lost.
        hr = win32.g_pKeyboard->Acquire();

		// nuke the garbage
		if (!FAILED(hr)) {
			hr = win32.g_pKeyboard->GetDeviceState( sizeof( toggleFetch[ diFetch ] ), toggleFetch[ diFetch ] );
		}
        // hr may be DIERR_OTHERAPPHASPRIO or other errors.  This
        // may occur when the app is minimized or in the process of 
        // switching, so just try again later 
    }

    if( FAILED(hr) ) {
        return 0;
	}

	// build faked events
	int		numChanges = 0;

	for ( int i = 0 ; i < 256 ; i++ ) {
		if ( toggleFetch[0][i] != toggleFetch[1][i] ) {
			polled_didod[ numChanges ].dwOfs = i;
			polled_didod[ numChanges ].dwData = toggleFetch[ diFetch ][i] ? 0x80 : 0;
			numChanges++;
		}
	}

	diFetch ^= 1;

	return numChanges;
}

#endif

/*
====================
Sys_PollKeyboardInputEvents
====================
*/
int Sys_ReturnKeyboardInputEvent( const int n, int &ch, bool &state ) {
	ch = polled_didod[ n ].dwOfs;
	state = ( polled_didod[ n ].dwData & 0x80 ) == 0x80;
	if ( ch == K_PRINTSCREEN || ch == K_LCTRL || ch == K_LALT || ch == K_RCTRL || ch == K_RALT ) {
		// for windows, add a keydown event for print screen here, since
		// windows doesn't send keydown events to the WndProc for this key.
		// ctrl and alt are handled here to get around windows sending ctrl and
		// alt messages when the right-alt is pressed on non-US 102 keyboards.
		Sys_QueEvent( SE_KEY, ch, state, 0, NULL, 0 );
	}
	return ch;
}


void Sys_EndKeyboardInputEvents() {
}

//=====================================================================================


int Sys_PollMouseInputEvents( int mouseEvents[MAX_MOUSE_EVENTS][2] ) {
	DWORD				dwElements;
	HRESULT				hr;

	if ( !win32.g_pMouse || !win32.mouseGrabbed ) {
		return 0;
	}

    dwElements = DINPUT_BUFFERSIZE;
    hr = win32.g_pMouse->GetDeviceData( sizeof(DIDEVICEOBJECTDATA), polled_didod, &dwElements, 0 );

    if( hr != DI_OK ) {
        hr = win32.g_pMouse->Acquire();
		// clear the garbage
		if (!FAILED(hr)) {
			win32.g_pMouse->GetDeviceData( sizeof(DIDEVICEOBJECTDATA), polled_didod, &dwElements, 0 );
		}
    }

    if( FAILED(hr) ) {
        return 0;
	}

	if ( dwElements > MAX_MOUSE_EVENTS ) {
		dwElements = MAX_MOUSE_EVENTS;
	}

	for( DWORD i = 0; i < dwElements; i++ ) {
		mouseEvents[i][0] = M_INVALID;
		mouseEvents[i][1] = 0;

		if ( polled_didod[i].dwOfs >= DIMOFS_BUTTON0 && polled_didod[i].dwOfs <= DIMOFS_BUTTON7 ) {
			const int mouseButton = ( polled_didod[i].dwOfs - DIMOFS_BUTTON0 );
			const bool mouseDown = (polled_didod[i].dwData & 0x80) == 0x80;
			mouseEvents[i][0] = M_ACTION1 + mouseButton;
			mouseEvents[i][1] = mouseDown;
			Sys_QueEvent( SE_KEY, K_MOUSE1 + mouseButton, mouseDown, 0, NULL, 0 );
		} else {
			switch (polled_didod[i].dwOfs) {
			case DIMOFS_X:
				mouseEvents[i][0] = M_DELTAX;
				mouseEvents[i][1] = polled_didod[i].dwData;
				Sys_QueEvent( SE_MOUSE, polled_didod[i].dwData, 0, 0, NULL, 0 );
				break;
			case DIMOFS_Y:
				mouseEvents[i][0] = M_DELTAY;
				mouseEvents[i][1] = polled_didod[i].dwData;
				Sys_QueEvent( SE_MOUSE, 0, polled_didod[i].dwData, 0, NULL, 0 );
				break;
			case DIMOFS_Z:
				mouseEvents[i][0] = M_DELTAZ;
				mouseEvents[i][1] = (int)polled_didod[i].dwData / WHEEL_DELTA;
				{
					const int value = (int)polled_didod[i].dwData / WHEEL_DELTA;
					const int key = value < 0 ? K_MWHEELDOWN : K_MWHEELUP;
					const int iterations = abs( value );
					for ( int i = 0; i < iterations; i++ ) {
						Sys_QueEvent( SE_KEY, key, true, 0, NULL, 0 );
						Sys_QueEvent( SE_KEY, key, false, 0, NULL, 0 );
					}
				}
				break;
			}
		}
	}

	return dwElements;
}

//=====================================================================================
//	Joystick Input Handling
//=====================================================================================

void Sys_SetRumble( int device, int low, int hi ) {
	return win32.g_Joystick.SetRumble( device, low, hi );
}

int Sys_PollJoystickInputEvents( int deviceNum ) {
	return win32.g_Joystick.PollInputEvents( deviceNum );
}


int Sys_ReturnJoystickInputEvent( const int n, int &action, int &value ) {
	return win32.g_Joystick.ReturnInputEvent( n, action, value );
}


void Sys_EndJoystickInputEvents() {
}


/*
========================
JoystickSamplingThread
========================
*/
static int	threadTimeDeltas[256];
static int	threadPacket[256];
static int	threadCount;
void JoystickSamplingThread( void *data ) {
	static int prevTime = 0;
	static uint64 nextCheck[MAX_JOYSTICKS] = { 0 };
	const uint64 waitTime = 5000000; // poll every 5 seconds to see if a controller was connected
	while( 1 ) {
		// hopefully we see close to 4000 usec each loop
		int	now = Sys_Microseconds();
		int	delta;
		if ( prevTime == 0 ) {
			delta = 4000;
		} else {
			delta = now - prevTime;
		}
		prevTime = now;
		threadTimeDeltas[threadCount&255] = delta;
		threadCount++;

		{
			XINPUT_STATE	joyData[MAX_JOYSTICKS];
			bool			validData[MAX_JOYSTICKS];
			for ( int i = 0 ; i < MAX_JOYSTICKS ; i++ ) {
				if ( now >= nextCheck[i] ) {
					// XInputGetState might block... for a _really_ long time..
					validData[i] = XInputGetState( i, &joyData[i] ) == ERROR_SUCCESS;

					// allow an immediate data poll if the input device is connected else 
					// wait for some time to see if another device was reconnected.
					// Checking input state infrequently for newly connected devices prevents 
					// severe slowdowns on PC, especially on WinXP64.
					if ( validData[i] ) {
						nextCheck[i] = 0;
					} else {
						nextCheck[i] = now + waitTime;
					}
				}
			}

			// do this short amount of processing inside a critical section
			idScopedCriticalSection cs( win32.g_Joystick.mutexXis );

			for ( int i = 0 ; i < MAX_JOYSTICKS ; i++ ) {
				controllerState_t * cs = &win32.g_Joystick.controllers[i];

				if ( !validData[i] ) {
					cs->valid = false;
					continue;
				}
				cs->valid = true;

				XINPUT_STATE& current = joyData[i];

				cs->current = current;

				// Switch from using cs->current to current to reduce chance of Load-Hit-Store on consoles

				threadPacket[threadCount&255] = current.dwPacketNumber;
#if 0
				if ( xis.dwPacketNumber == oldXis[ inputDeviceNum ].dwPacketNumber ) {
					return numEvents;
				}
#endif
				cs->buttonBits |= current.Gamepad.wButtons;
			}
		}

		// we want this to be processed at least 250 times a second
		WaitForSingleObject( win32.g_Joystick.timer, INFINITE );
	}
}


/*
========================
idJoystickWin32::idJoystickWin32
========================
*/
idJoystickWin32::idJoystickWin32() {
	numEvents = 0;
	memset( &events, 0, sizeof( events ) );
	memset( &controllers, 0, sizeof( controllers ) );
	memset( buttonStates, 0, sizeof( buttonStates ) );
	memset( joyAxis, 0, sizeof( joyAxis ) );
}

/*
========================
idJoystickWin32::Init
========================
*/
bool idJoystickWin32::Init() {
	idJoystick::Init();

	// setup the timer that the high frequency thread will wait on
	// to fire every 4 msec
	timer = CreateWaitableTimer( NULL, FALSE, "JoypadTimer" );
	LARGE_INTEGER dueTime;
	dueTime.QuadPart = -1;
	if ( !SetWaitableTimer( timer, &dueTime, 4, NULL, NULL, FALSE ) ) {
		idLib::FatalError( "SetWaitableTimer for joystick failed" );
	}

	// spawn the high frequency joystick reading thread
	Sys_CreateThread( (xthread_t)JoystickSamplingThread, NULL, THREAD_HIGHEST, "Joystick", CORE_1A );

	return false;
}

/*
========================
idJoystickWin32::SetRumble
========================
*/
void idJoystickWin32::SetRumble( int inputDeviceNum, int rumbleLow, int rumbleHigh ) {
	if ( inputDeviceNum < 0 || inputDeviceNum >= MAX_JOYSTICKS ) {
		return;
	}
	if ( !controllers[inputDeviceNum].valid ) {
		return;
	}
	XINPUT_VIBRATION vibration;
	vibration.wLeftMotorSpeed = idMath::ClampInt( 0, 65535, rumbleLow );
	vibration.wRightMotorSpeed = idMath::ClampInt( 0, 65535, rumbleHigh );
	DWORD err = XInputSetState( inputDeviceNum, &vibration );
	if ( err != ERROR_SUCCESS ) {
		idLib::Warning( "XInputSetState error: 0x%x", err );
	}
}

/*
========================
idJoystickWin32::PostInputEvent
========================
*/
void idJoystickWin32::PostInputEvent( int inputDeviceNum, int event, int value, int range ) {
	// These events are used for GUI button presses
	if ( ( event >= J_ACTION1 ) && ( event <= J_ACTION_MAX ) ) {
		PushButton( inputDeviceNum, K_JOY1 + ( event - J_ACTION1 ), value != 0 );
	} else if ( event == J_AXIS_LEFT_X ) {
		PushButton( inputDeviceNum, K_JOY_STICK1_LEFT, ( value < -range ) );
		PushButton( inputDeviceNum, K_JOY_STICK1_RIGHT, ( value > range ) );
	} else if ( event == J_AXIS_LEFT_Y ) {
		PushButton( inputDeviceNum, K_JOY_STICK1_UP, ( value < -range ) );
		PushButton( inputDeviceNum, K_JOY_STICK1_DOWN, ( value > range ) );
	} else if ( event == J_AXIS_RIGHT_X ) {
		PushButton( inputDeviceNum, K_JOY_STICK2_LEFT, ( value < -range ) );
		PushButton( inputDeviceNum, K_JOY_STICK2_RIGHT, ( value > range ) );
	} else if ( event == J_AXIS_RIGHT_Y ) {
		PushButton( inputDeviceNum, K_JOY_STICK2_UP, ( value < -range ) );
		PushButton( inputDeviceNum, K_JOY_STICK2_DOWN, ( value > range ) );
	} else if ( ( event >= J_DPAD_UP ) && ( event <= J_DPAD_RIGHT ) ) {
		PushButton( inputDeviceNum, K_JOY_DPAD_UP + ( event - J_DPAD_UP ), value != 0 );
	} else if ( event == J_AXIS_LEFT_TRIG ) {
		PushButton( inputDeviceNum, K_JOY_TRIGGER1, ( value > range ) );
	} else if ( event == J_AXIS_RIGHT_TRIG ) {
		PushButton( inputDeviceNum, K_JOY_TRIGGER2, ( value > range ) );
	}
	if ( event >= J_AXIS_MIN && event <= J_AXIS_MAX ) {
		int axis = event - J_AXIS_MIN;
		int percent = ( value * 16 ) / range;
		if ( joyAxis[inputDeviceNum][axis] != percent ) {
			joyAxis[inputDeviceNum][axis] = percent;
			Sys_QueEvent( SE_JOYSTICK, axis, percent, 0, NULL, inputDeviceNum );
		}
	}

	// These events are used for actual game input
	events[numEvents].event = event;
	events[numEvents].value = value;
	numEvents++;
}

/*
========================
idJoystickWin32::PollInputEvents
========================
*/
int idJoystickWin32::PollInputEvents( int inputDeviceNum ) {
	numEvents = 0;

	if ( !win32.activeApp ) {
		return numEvents;
	}

	assert( inputDeviceNum < 4 );

//	if ( inputDeviceNum > in_joystick.GetInteger() ) {
//		return numEvents;
//	}

	controllerState_t *cs = &controllers[ inputDeviceNum ];

	// grab the current packet under a critical section
	XINPUT_STATE xis;
	XINPUT_STATE old;
	int		orBits;
	{
		idScopedCriticalSection crit( mutexXis );
		xis = cs->current;
		old = cs->previous;
		cs->previous = xis;
		// fetch or'd button bits
		orBits = cs->buttonBits;
		cs->buttonBits = 0;
	}
#if 0
	if ( XInputGetState( inputDeviceNum, &xis ) != ERROR_SUCCESS ) {
		return numEvents;
	}
#endif
	for ( int i = 0 ; i < 32 ; i++ ) {
		int	bit = 1<<i;

		if ( ( ( xis.Gamepad.wButtons | old.Gamepad.wButtons ) & bit ) == 0
			&& ( orBits & bit ) ) {
				idLib::Printf( "Dropped button press on bit %i\n", i );
		}
	}

	if ( session->IsSystemUIShowing() ) {
		// memset xis so the current input does not get latched if the UI is showing
		memset( &xis, 0, sizeof( XINPUT_STATE ) );
	}

	int joyRemap[16] = {
		J_DPAD_UP,		J_DPAD_DOWN,	// Up, Down
		J_DPAD_LEFT,	J_DPAD_RIGHT,	// Left, Right
		J_ACTION9,		J_ACTION10,		// Start, Back
		J_ACTION7,		J_ACTION8,		// Left Stick Down, Right Stick Down
		J_ACTION5,		J_ACTION6,		// Black, White (Left Shoulder, Right Shoulder)
		0,				0,				// Unused
		J_ACTION1,		J_ACTION2,		// A, B
		J_ACTION3,		J_ACTION4,		// X, Y
	};

	// Check the digital buttons
	for ( int i = 0; i < 16; i++ ) {
		int mask = ( 1 << i );
		if ( ( xis.Gamepad.wButtons & mask ) != ( old.Gamepad.wButtons & mask ) ) {
			PostInputEvent( inputDeviceNum, joyRemap[i], ( xis.Gamepad.wButtons & mask ) > 0 );
		}
	}

	// Check the triggers
	if ( xis.Gamepad.bLeftTrigger != old.Gamepad.bLeftTrigger ) {
		PostInputEvent( inputDeviceNum, J_AXIS_LEFT_TRIG, xis.Gamepad.bLeftTrigger * 128 );
	}
	if ( xis.Gamepad.bRightTrigger != old.Gamepad.bRightTrigger ) {
		PostInputEvent( inputDeviceNum, J_AXIS_RIGHT_TRIG, xis.Gamepad.bRightTrigger * 128 );
	}

	if ( xis.Gamepad.sThumbLX != old.Gamepad.sThumbLX ) {
		PostInputEvent( inputDeviceNum, J_AXIS_LEFT_X, xis.Gamepad.sThumbLX );
	}
	if ( xis.Gamepad.sThumbLY != old.Gamepad.sThumbLY ) {
		PostInputEvent( inputDeviceNum, J_AXIS_LEFT_Y, -xis.Gamepad.sThumbLY );
	}
	if ( xis.Gamepad.sThumbRX != old.Gamepad.sThumbRX ) {
		PostInputEvent( inputDeviceNum, J_AXIS_RIGHT_X, xis.Gamepad.sThumbRX );
	}
	if ( xis.Gamepad.sThumbRY != old.Gamepad.sThumbRY ) {
		PostInputEvent( inputDeviceNum, J_AXIS_RIGHT_Y, -xis.Gamepad.sThumbRY );
	}

	return numEvents;
}


/*
========================
idJoystickWin32::ReturnInputEvent
========================
*/
int idJoystickWin32::ReturnInputEvent( const int n, int & action, int &value ) {
	if ( ( n < 0 ) || ( n >= MAX_JOY_EVENT ) ) {
		return 0;
	}

	action = events[ n ].event;
	value = events[ n ].value;

	return 1;
}

/*
========================
idJoystickWin32::PushButton
========================
*/
void idJoystickWin32::PushButton( int inputDeviceNum, int key, bool value ) {
	// So we don't keep sending the same SE_KEY message over and over again
	if ( buttonStates[inputDeviceNum][key] != value ) {
		buttonStates[inputDeviceNum][key] = value;
		Sys_QueEvent( SE_KEY, key, value, 0, NULL, inputDeviceNum );
	}
}