/*
Copyright (C) 1996-1997 Id Software, Inc.

This program 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 2
of the License, or (at your option) any later version.

This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// in_win.c -- windows 95 mouse and joystick code
// 02/21/97 JCB Added extended DirectInput code to support external controllers.

#include <dinput.h>
#include "quakedef.h"
#include "winquake.h"
#include "dosisms.h"

#define DINPUT_BUFFERSIZE           16
#define iDirectInputCreate(a,b,c,d)	pDirectInputCreate(a,b,c,d)

HRESULT (WINAPI *pDirectInputCreate)(HINSTANCE hinst, DWORD dwVersion,
	LPDIRECTINPUT * lplpDirectInput, LPUNKNOWN punkOuter);

// mouse variables
cvar_t	m_filter = {"m_filter","0"};

int			mouse_buttons;
int			mouse_oldbuttonstate;
POINT		current_pos;
int			mouse_x, mouse_y, old_mouse_x, old_mouse_y, mx_accum, my_accum;

static qboolean	restore_spi;
static int		originalmouseparms[3], newmouseparms[3] = {0, 0, 1};

unsigned int uiWheelMessage;
qboolean	mouseactive;
qboolean	mouseinitialized;
static qboolean	mouseparmsvalid, mouseactivatetoggle;
static qboolean	mouseshowtoggle = 1;
static qboolean	dinput_acquired;
static qboolean mouserelative;

static unsigned int		mstate_di;

// joystick defines and variables
// where should defines be moved?
#define JOY_ABSOLUTE_AXIS	0x00000000		// control like a joystick
#define JOY_RELATIVE_AXIS	0x00000010		// control like a mouse, spinner, trackball
#define	JOY_MAX_AXES		6				// X, Y, Z, R, U, V
#define JOY_AXIS_X			0
#define JOY_AXIS_Y			1
#define JOY_AXIS_Z			2
#define JOY_AXIS_R			3
#define JOY_AXIS_U			4
#define JOY_AXIS_V			5

enum _ControlList
{
	AxisNada = 0, AxisForward, AxisLook, AxisSide, AxisTurn
};

DWORD	dwAxisFlags[JOY_MAX_AXES] =
{
	JOY_RETURNX, JOY_RETURNY, JOY_RETURNZ, JOY_RETURNR, JOY_RETURNU, JOY_RETURNV
};

DWORD	dwAxisMap[JOY_MAX_AXES];
DWORD	dwControlMap[JOY_MAX_AXES];
PDWORD	pdwRawValue[JOY_MAX_AXES];

// none of these cvars are saved over a session
// this means that advanced controller configuration needs to be executed
// each time.  this avoids any problems with getting back to a default usage
// or when changing from one controller to another.  this way at least something
// works.
cvar_t	in_joystick = {"joy_enabled","0", true};
cvar_t	joy_name = {"joy_name", "joystick"};
cvar_t	joy_advanced = {"joy_advanced", "0"};
cvar_t	joy_advaxisx = {"joy_advaxisx", "0"};
cvar_t	joy_advaxisy = {"joy_advaxisy", "0"};
cvar_t	joy_advaxisz = {"joy_advaxisz", "0"};
cvar_t	joy_advaxisr = {"joy_advaxisr", "0"};
cvar_t	joy_advaxisu = {"joy_advaxisu", "0"};
cvar_t	joy_advaxisv = {"joy_advaxisv", "0"};
cvar_t	joy_forwardthreshold = {"joy_forwardthreshold", "0.15"};
cvar_t	joy_sidethreshold = {"joy_sidethreshold", "0.15"};
cvar_t	joy_pitchthreshold = {"joy_pitchthreshold", "0.15"};
cvar_t	joy_yawthreshold = {"joy_yawthreshold", "0.15"};
cvar_t	joy_forwardsensitivity = {"joy_forwardsensitivity", "-1.0"};
cvar_t	joy_sidesensitivity = {"joy_sidesensitivity", "-1.0"};
cvar_t	joy_pitchsensitivity = {"joy_pitchsensitivity", "1.0"};
cvar_t	joy_yawsensitivity = {"joy_yawsensitivity", "-1.0"};
cvar_t	joy_wwhack1 = {"joy_wwhack1", "0.0"};
cvar_t	joy_wwhack2 = {"joy_wwhack2", "0.0"};

qboolean	joy_avail, joy_advancedinit, joy_haspov;
DWORD		joy_oldbuttonstate, joy_oldpovstate;

int			joy_id;
DWORD		joy_flags;
DWORD		joy_numbuttons;

static LPDIRECTINPUT		g_pdi;
static LPDIRECTINPUTDEVICE	g_pMouse;

static JOYINFOEX	ji;

static HINSTANCE hInstDI;

static qboolean	dinput;

typedef struct MYDATA {
	LONG  lX;                   // X axis goes here
	LONG  lY;                   // Y axis goes here
	LONG  lZ;                   // Z axis goes here
	BYTE  bButtonA;             // One button goes here
	BYTE  bButtonB;             // Another button goes here
	BYTE  bButtonC;             // Another button goes here
	BYTE  bButtonD;             // Another button goes here
} MYDATA;

static DIOBJECTDATAFORMAT rgodf[] = {
  { &GUID_XAxis,    FIELD_OFFSET(MYDATA, lX),       DIDFT_AXIS | DIDFT_ANYINSTANCE,   0,},
  { &GUID_YAxis,    FIELD_OFFSET(MYDATA, lY),       DIDFT_AXIS | DIDFT_ANYINSTANCE,   0,},
  { &GUID_ZAxis,    FIELD_OFFSET(MYDATA, lZ),       0x80000000 | DIDFT_AXIS | DIDFT_ANYINSTANCE,   0,},
  { 0,              FIELD_OFFSET(MYDATA, bButtonA), DIDFT_BUTTON | DIDFT_ANYINSTANCE, 0,},
  { 0,              FIELD_OFFSET(MYDATA, bButtonB), DIDFT_BUTTON | DIDFT_ANYINSTANCE, 0,},
  { 0,              FIELD_OFFSET(MYDATA, bButtonC), 0x80000000 | DIDFT_BUTTON | DIDFT_ANYINSTANCE, 0,},
  { 0,              FIELD_OFFSET(MYDATA, bButtonD), 0x80000000 | DIDFT_BUTTON | DIDFT_ANYINSTANCE, 0,},
};

#define NUM_OBJECTS (sizeof(rgodf) / sizeof(rgodf[0]))

static DIDATAFORMAT	df = {
	sizeof(DIDATAFORMAT),       // this structure
	sizeof(DIOBJECTDATAFORMAT), // size of object data format
	DIDF_ABSAXIS,               // absolute axis coordinates
	sizeof(MYDATA),             // device data size
	NUM_OBJECTS,                // number of objects
	rgodf,                      // and here they are
};

// forward-referenced functions
void IN_StartupJoystick (void);
void Joy_AdvancedUpdate_f (void);
void IN_JoyMove (usercmd_t *cmd);


/*
===========
Force_CenterView_f
===========
*/
void Force_CenterView_f (void)
{
	cl.viewangles[PITCH] = 0;
}

/*
===========
IN_ShowMouse

PENTA: We make this much easier at startup we hide,
at shutdown we show no more hiding and showing all the time and we render our own cursor.
===========
*/
void IN_ShowMouse (void)
{

	if (!mouseshowtoggle)
	{
		ShowCursor (TRUE);
		mouseshowtoggle = 1;
	}
}


/*
===========
IN_HideMouse
===========
*/
void IN_HideMouse (void)
{

	if (mouseshowtoggle)
	{
		ShowCursor (FALSE);
		mouseshowtoggle = 0;
	}
}

/*
===========
IN_RelativeMouse()
Mouse movements are relative (delta values since last check)
===========
*/
void IN_RelativeMouse (void)
{
	static const DIPROPDWORD	dipdw = {
		{
			sizeof(DIPROPDWORD),        // diph.dwSize
			sizeof(DIPROPHEADER),       // diph.dwHeaderSize
			0,                          // diph.dwObj
			DIPH_DEVICE,                // diph.dwHow
		},
		DIDF_RELAXIS,              // dwData
	};
    HRESULT		hr;
	if (!mouserelative)
	{
		if (dinput) {
			hr = IDirectInputDevice_SetProperty(g_pMouse, DIPROP_AXISMODE, &dipdw.diph);
			if (FAILED(hr)) {
				Con_Printf("IDirectInputDevice::SetProperty: Failed to set axis mode\n");
			}
		}
		mouserelative = true;
	}
}

/*
===========
IN_AbsoluteMouse()
Mouse movements are in screen coordinates
===========
*/
void IN_AbsoluteMouse (void)
{
	static const DIPROPDWORD	dipdw = {
		{
			sizeof(DIPROPDWORD),        // diph.dwSize
			sizeof(DIPROPHEADER),       // diph.dwHeaderSize
			0,                          // diph.dwObj
			DIPH_DEVICE,                // diph.dwHow
		},
		DIDF_ABSAXIS,              // dwData
	};
    HRESULT		hr;

	if (mouserelative)
	{
		Cbuf_AddText("mousemove 0 0\n");
		if (dinput) {
			hr = IDirectInputDevice_SetProperty(g_pMouse, DIPROP_AXISMODE, &dipdw.diph);
			if (FAILED(hr)) {
				Con_Printf("IDirectInputDevice::SetProperty: Failed to set axis mode\n");
			}
		}
		mouserelative = false;
	}
}

/*
===========
IN_ActivateMouse

  Get the mouse "exclusively"
  Called at: startup, alt-tab, activate
===========
*/
void IN_ActivateMouse (void)
{

	mouseactivatetoggle = true;

	//Con_Printf("Activate mouse\n");

	if (mouseinitialized)
	{
		if (dinput)
		{
			if (g_pMouse)
			{
				if (!dinput_acquired)
				{
					IDirectInputDevice_Acquire(g_pMouse);
					dinput_acquired = true;
				}
			}
			else
			{
				return;
			}
		}
		else
		{
			//if (mouseparmsvalid)
			//	restore_spi = SystemParametersInfo (SPI_SETMOUSE, 0, newmouseparms, 0);

			if (key_dest == key_game)
				SetCursorPos (window_center_x, window_center_y);

			SetCapture (mainwindow);
			//ClipCursor (&window_rect);
		}

		mouseactive = true;
	}
}

/*
===========
IN_DeactivateMouse

  Give away mouse "exclusivity"
  Called at: shutdown, alt-tab deactivate
===========
*/
void IN_DeactivateMouse (void)
{

	mouseactivatetoggle = false;

	//Con_Printf("Deactivate mouse\n");

	if (mouseinitialized)
	{
		if (dinput)
		{
			if (g_pMouse)
			{
				if (dinput_acquired)
				{
					IDirectInputDevice_Unacquire(g_pMouse);
					dinput_acquired = false;
				}
			}
		}
		else
		{
			//if (restore_spi)
			//	SystemParametersInfo (SPI_SETMOUSE, 0, originalmouseparms, 0);

			//ClipCursor (NULL);
			ReleaseCapture ();
		}

		mouseactive = false;
	}
}


/*
===========
IN_RestoreOriginalMouseState
===========
*/
void IN_RestoreOriginalMouseState (void)
{
	if (mouseactivatetoggle)
	{
		IN_DeactivateMouse ();
		mouseactivatetoggle = true;
	}

// try to redraw the cursor so it gets reinitialized, because sometimes it
// has garbage after the mode switch
	ShowCursor (TRUE);
	ShowCursor (FALSE);
}


/*
===========
IN_InitDInput
===========
*/
qboolean IN_InitDInput (void)
{
    HRESULT		hr;
	DIPROPDWORD	dipdw = {
		{
			sizeof(DIPROPDWORD),        // diph.dwSize
			sizeof(DIPROPHEADER),       // diph.dwHeaderSize
			0,                          // diph.dwObj
			DIPH_DEVICE,                // diph.dwHow
		},
		DINPUT_BUFFERSIZE,              // dwData
	};

	if (!hInstDI)
	{
		hInstDI = LoadLibrary("dinput.dll");
		
		if (hInstDI == NULL)
		{
			Con_SafePrintf ("Couldn't load dinput.dll\n");
			return false;
		}
	}

	if (!pDirectInputCreate)
	{
		pDirectInputCreate = (void *)GetProcAddress(hInstDI,"DirectInputCreateA");

		if (!pDirectInputCreate)
		{
			Con_SafePrintf ("Couldn't get DI proc addr\n");
			return false;
		}
	}

// register with DirectInput and get an IDirectInput to play with.
	hr = iDirectInputCreate(global_hInstance, DIRECTINPUT_VERSION, &g_pdi, NULL);

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

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

	if (FAILED(hr))
	{
		Con_SafePrintf ("Couldn't open DI mouse device\n");
		return false;
	}

// set the data format to "mouse format".
	hr = IDirectInputDevice_SetDataFormat(g_pMouse, &df);

	if (FAILED(hr))
	{
		Con_SafePrintf ("Couldn't set DI mouse format\n");
		return false;
	}

// set the cooperativity level.
	hr = IDirectInputDevice_SetCooperativeLevel(g_pMouse, mainwindow,
			DISCL_EXCLUSIVE | DISCL_FOREGROUND);

	if (FAILED(hr))
	{
		Con_SafePrintf ("Couldn't set DI coop level\n");
		return false;
	}


// set the buffer size to DINPUT_BUFFERSIZE elements.
// the buffer size is a DWORD property associated with the device
	hr = IDirectInputDevice_SetProperty(g_pMouse, DIPROP_BUFFERSIZE, &dipdw.diph);

	if (FAILED(hr))
	{
		Con_SafePrintf ("Couldn't set DI buffersize\n");
		return false;
	}

	return true;
}


/*
===========
IN_StartupMouse
===========
*/
void IN_StartupMouse (void)
{
	HDC			hdc;

	if ( COM_CheckParm ("-nomouse") ) 
		return; 

	mouseinitialized = true;

	if (COM_CheckParm ("-dinput"))
	{
		dinput = IN_InitDInput ();

		if (dinput)
		{
			Con_SafePrintf ("DirectInput initialized\n");
		}
		else
		{
			Con_SafePrintf ("DirectInput not initialized\n");
		}
	}

	if (!dinput)
	{
		mouseparmsvalid = SystemParametersInfo (SPI_GETMOUSE, 0, originalmouseparms, 0);

		if (mouseparmsvalid)
		{
			if ( COM_CheckParm ("-noforcemspd") ) 
				newmouseparms[2] = originalmouseparms[2];

			if ( COM_CheckParm ("-noforcemaccel") ) 
			{
				newmouseparms[0] = originalmouseparms[0];
				newmouseparms[1] = originalmouseparms[1];
			}

			if ( COM_CheckParm ("-noforcemparms") ) 
			{
				newmouseparms[0] = originalmouseparms[0];
				newmouseparms[1] = originalmouseparms[1];
				newmouseparms[2] = originalmouseparms[2];
			}
		}
	}

	mouse_buttons = 3;

// if a fullscreen video mode was set before the mouse was initialized,
// set the mouse state appropriately
	if (mouseactivatetoggle)
		IN_ActivateMouse ();
}


/*
===========
IN_Init
===========
*/
void IN_Init (void)
{
	// mouse variables
	Cvar_RegisterVariable (&m_filter);

	// joystick variables
	Cvar_RegisterVariable (&in_joystick);
	Cvar_RegisterVariable (&joy_name);
	Cvar_RegisterVariable (&joy_advanced);
	Cvar_RegisterVariable (&joy_advaxisx);
	Cvar_RegisterVariable (&joy_advaxisy);
	Cvar_RegisterVariable (&joy_advaxisz);
	Cvar_RegisterVariable (&joy_advaxisr);
	Cvar_RegisterVariable (&joy_advaxisu);
	Cvar_RegisterVariable (&joy_advaxisv);
	Cvar_RegisterVariable (&joy_forwardthreshold);
	Cvar_RegisterVariable (&joy_sidethreshold);
	Cvar_RegisterVariable (&joy_pitchthreshold);
	Cvar_RegisterVariable (&joy_yawthreshold);
	Cvar_RegisterVariable (&joy_forwardsensitivity);
	Cvar_RegisterVariable (&joy_sidesensitivity);
	Cvar_RegisterVariable (&joy_pitchsensitivity);
	Cvar_RegisterVariable (&joy_yawsensitivity);
	Cvar_RegisterVariable (&joy_wwhack1);
	Cvar_RegisterVariable (&joy_wwhack2);

	Cmd_AddCommand ("force_centerview", Force_CenterView_f);
	Cmd_AddCommand ("joy_advancedupdate", Joy_AdvancedUpdate_f);

	uiWheelMessage = RegisterWindowMessage ( "MSWHEEL_ROLLMSG" );

	IN_StartupMouse ();
	IN_ActivateMouse ();
	//IN_HideMouse();
	IN_StartupJoystick ();
}

/*
===========
IN_Shutdown
===========
*/
void IN_Shutdown (void)
{

	IN_DeactivateMouse ();
	//IN_ShowMouse ();

    if (g_pMouse)
	{
		IDirectInputDevice_Release(g_pMouse);
		g_pMouse = NULL;
	}

    if (g_pdi)
	{
		IDirectInput_Release(g_pdi);
		g_pdi = NULL;
	}
}


/*
===========
IN_MouseEvent
===========
*/
void IN_MouseEvent (int mstate)
{
	int	i;

	if ( (mouseactive || (key_dest == key_menu)) && !dinput )
	{
	// perform button actions
		for (i=0 ; i<mouse_buttons ; i++)
		{
			if ( (mstate & (1<<i)) &&
				!(mouse_oldbuttonstate & (1<<i)) )
			{
				Key_Event (K_MOUSE1 + i, true);
			}

			if ( !(mstate & (1<<i)) &&
				(mouse_oldbuttonstate & (1<<i)) )
			{
				Key_Event (K_MOUSE1 + i, false);
			}
		}	
			
		mouse_oldbuttonstate = mstate;
	}
}

extern int		window_x, window_y;
/*
===========
IN_MouseMove
===========
*/
static void IN_MouseMove (void)
{
	int					mx, my;
	HDC					hdc;
	int					i;
	DIDEVICEOBJECTDATA	od;
	DWORD				dwElements;
	HRESULT				hr;

	if (!mouseactive)
		return;

	if (dinput)
	{
		mx = 0;
		my = 0;

		for (;;)
		{
			dwElements = 1;

			hr = IDirectInputDevice_GetDeviceData(g_pMouse,
					sizeof(DIDEVICEOBJECTDATA), &od, &dwElements, 0);

			if ((hr == DIERR_INPUTLOST) || (hr == DIERR_NOTACQUIRED))
			{
				dinput_acquired = true;
				IDirectInputDevice_Acquire(g_pMouse);
				break;
			}

			/* Unable to read data or no data available */
			if (FAILED(hr) || dwElements == 0)
			{
				break;
			}

			/* Look at the element to see what happened */

			switch (od.dwOfs)
			{
				case DIMOFS_X:
					if (mouserelative)
						mx += od.dwData;
					else
						mx = od.dwData;
					break;

				case DIMOFS_Y:
					if (mouserelative)
						my += od.dwData;
					else
						my = od.dwData;
					break;

				case DIMOFS_BUTTON0:
					if (od.dwData & 0x80)
						mstate_di |= 1;
					else
						mstate_di &= ~1;
					break;

				case DIMOFS_BUTTON1:
					if (od.dwData & 0x80)
						mstate_di |= (1<<1);
					else
						mstate_di &= ~(1<<1);
					break;
					
				case DIMOFS_BUTTON2:
					if (od.dwData & 0x80)
						mstate_di |= (1<<2);
					else
						mstate_di &= ~(1<<2);
					break;
			}
		}

	// perform button actions
		for (i=0 ; i<mouse_buttons ; i++)
		{
			if ( (mstate_di & (1<<i)) &&
				!(mouse_oldbuttonstate & (1<<i)) )
			{
				Key_Event (K_MOUSE1 + i, true);
			}

			if ( !(mstate_di & (1<<i)) &&
				(mouse_oldbuttonstate & (1<<i)) )
			{
				Key_Event (K_MOUSE1 + i, false);
			}
		}	
			
		mouse_oldbuttonstate = mstate_di;
	}
	else
	{
		if (mouserelative) {
			GetCursorPos (&current_pos);
			//the m*_accum are extra polled mouse positions when we are going slow to 
			//enhance responsiveness.
			mx = current_pos.x - window_center_x + mx_accum;
			my = current_pos.y - window_center_y + my_accum;
			mx_accum = 0;
			my_accum = 0;
			SetCursorPos (window_center_x, window_center_y);
		} else {
			GetCursorPos (&current_pos);
			mx = current_pos.x - window_x;
			my = current_pos.y - window_y;
		}
	}

	//If it has actually moved throw an event
	if ((mx != old_mouse_x) || (my != old_mouse_y)) {

		if (m_filter.value)
		{
			mouse_x = (mx + old_mouse_x) * 0.5;
			mouse_y = (my + old_mouse_y) * 0.5;
		}
		else
		{
			mouse_x = mx;
			mouse_y = my;
		}

		Key_MouseMoveEvent( mouse_x, mouse_y, mouserelative );
	}

	old_mouse_x = mx;
	old_mouse_y = my;
}


/*
===========
IN_Move
===========
*/
void IN_Move (usercmd_t *cmd)
{

	if (ActiveApp && !Minimized)
	{
		IN_JoyMove (cmd);
	}
}


/*
===========
IN_Accumulate

  If going slow so we don't loose mouse movement
===========
*/
void IN_Accumulate (void)
{
	int		mx, my;
	HDC	hdc;

	if (mouseactive)
	{
		//only accumulate if we do relative movement
		if (!dinput && mouserelative)
		{
			GetCursorPos (&current_pos);

			mx_accum += current_pos.x - window_center_x;
			my_accum += current_pos.y - window_center_y;

			SetCursorPos (window_center_x, window_center_y);
		}
	}
}


/*
===================
IN_ClearStates
===================
*/
void IN_ClearStates (void)
{

	if (mouseactive)
	{
		mx_accum = 0;
		my_accum = 0;
		mouse_oldbuttonstate = 0;
	}
}


/* 
=============== 
IN_StartupJoystick 
=============== 
*/  
void IN_StartupJoystick (void) 
{ 
	int			i, numdevs;
	JOYCAPS		jc;
	MMRESULT	mmr;
 
 	// assume no joystick
	joy_avail = false; 

	// abort startup if user requests no joystick
	if ( COM_CheckParm ("-nojoy") ) 
		return; 
 
	// verify joystick driver is present
	if ((numdevs = joyGetNumDevs ()) == 0)
	{
		Con_Printf ("\njoystick not found -- driver not present\n\n");
		return;
	}

	// cycle through the joystick ids for the first valid one
	for (joy_id=0 ; joy_id<numdevs ; joy_id++)
	{
		memset (&ji, 0, sizeof(ji));
		ji.dwSize = sizeof(ji);
		ji.dwFlags = JOY_RETURNCENTERED;

		if ((mmr = joyGetPosEx (joy_id, &ji)) == JOYERR_NOERROR)
			break;
	} 

	// abort startup if we didn't find a valid joystick
	if (mmr != JOYERR_NOERROR)
	{
		Con_Printf ("\njoystick not found -- no valid joysticks (%x)\n\n", mmr);
		return;
	}

	// get the capabilities of the selected joystick
	// abort startup if command fails
	memset (&jc, 0, sizeof(jc));
	if ((mmr = joyGetDevCaps (joy_id, &jc, sizeof(jc))) != JOYERR_NOERROR)
	{
		Con_Printf ("\njoystick not found -- invalid joystick capabilities (%x)\n\n", mmr); 
		return;
	}

	// save the joystick's number of buttons and POV status
	joy_numbuttons = jc.wNumButtons;
	joy_haspov = jc.wCaps & JOYCAPS_HASPOV;

	// old button and POV states default to no buttons pressed
	joy_oldbuttonstate = joy_oldpovstate = 0;

	// mark the joystick as available and advanced initialization not completed
	// this is needed as cvars are not available during initialization

	joy_avail = true; 
	joy_advancedinit = false;

	Con_Printf ("\njoystick detected\n\n"); 
}


/*
===========
RawValuePointer
===========
*/
PDWORD RawValuePointer (int axis)
{
	switch (axis)
	{
	case JOY_AXIS_X:
		return &ji.dwXpos;
	case JOY_AXIS_Y:
		return &ji.dwYpos;
	case JOY_AXIS_Z:
		return &ji.dwZpos;
	case JOY_AXIS_R:
		return &ji.dwRpos;
	case JOY_AXIS_U:
		return &ji.dwUpos;
	case JOY_AXIS_V:
		return &ji.dwVpos;
	}
        return NULL;
}


/*
===========
Joy_AdvancedUpdate_f
===========
*/
void Joy_AdvancedUpdate_f (void)
{

	// called once by IN_ReadJoystick and by user whenever an update is needed
	// cvars are now available
	int	i;
	DWORD dwTemp;

	// initialize all the maps
	for (i = 0; i < JOY_MAX_AXES; i++)
	{
		dwAxisMap[i] = AxisNada;
		dwControlMap[i] = JOY_ABSOLUTE_AXIS;
		pdwRawValue[i] = RawValuePointer(i);
	}

	if( joy_advanced.value == 0.0)
	{
		// default joystick initialization
		// 2 axes only with joystick control
		dwAxisMap[JOY_AXIS_X] = AxisTurn;
		// dwControlMap[JOY_AXIS_X] = JOY_ABSOLUTE_AXIS;
		dwAxisMap[JOY_AXIS_Y] = AxisForward;
		// dwControlMap[JOY_AXIS_Y] = JOY_ABSOLUTE_AXIS;
	}
	else
	{
		if (Q_strcmp (joy_name.string, "joy_enabled") != 0)
		{
			// notify user of advanced controller
			Con_Printf ("\n%s configured\n\n", joy_name.string);
		}

		// advanced initialization here
		// data supplied by user via joy_axisn cvars
		dwTemp = (DWORD) joy_advaxisx.value;
		dwAxisMap[JOY_AXIS_X] = dwTemp & 0x0000000f;
		dwControlMap[JOY_AXIS_X] = dwTemp & JOY_RELATIVE_AXIS;
		dwTemp = (DWORD) joy_advaxisy.value;
		dwAxisMap[JOY_AXIS_Y] = dwTemp & 0x0000000f;
		dwControlMap[JOY_AXIS_Y] = dwTemp & JOY_RELATIVE_AXIS;
		dwTemp = (DWORD) joy_advaxisz.value;
		dwAxisMap[JOY_AXIS_Z] = dwTemp & 0x0000000f;
		dwControlMap[JOY_AXIS_Z] = dwTemp & JOY_RELATIVE_AXIS;
		dwTemp = (DWORD) joy_advaxisr.value;
		dwAxisMap[JOY_AXIS_R] = dwTemp & 0x0000000f;
		dwControlMap[JOY_AXIS_R] = dwTemp & JOY_RELATIVE_AXIS;
		dwTemp = (DWORD) joy_advaxisu.value;
		dwAxisMap[JOY_AXIS_U] = dwTemp & 0x0000000f;
		dwControlMap[JOY_AXIS_U] = dwTemp & JOY_RELATIVE_AXIS;
		dwTemp = (DWORD) joy_advaxisv.value;
		dwAxisMap[JOY_AXIS_V] = dwTemp & 0x0000000f;
		dwControlMap[JOY_AXIS_V] = dwTemp & JOY_RELATIVE_AXIS;
	}

	// compute the axes to collect from DirectInput
	joy_flags = JOY_RETURNCENTERED | JOY_RETURNBUTTONS | JOY_RETURNPOV;
	for (i = 0; i < JOY_MAX_AXES; i++)
	{
		if (dwAxisMap[i] != AxisNada)
		{
			joy_flags |= dwAxisFlags[i];
		}
	}
}

/**
	Sets the mouse based on the destination
*/
void IN_MouseForDest(void) {

	if (con_forcedup) {
		IN_ShowMouse();
		IN_AbsoluteMouse();
		return;
	}

	switch (key_dest)
	{
	case key_game:
		IN_HideMouse();
		IN_RelativeMouse();
		return;
	default:
		IN_ShowMouse();
		IN_AbsoluteMouse();
		return;
	}

}

/*
===========
IN_Commands

  Called every frame to process input
===========
*/
void IN_Commands (void)
{
	int		i, key_index;
	DWORD	buttonstate, povstate;

	//Make sure mouse is correctly set up for the destination it will go to
	IN_MouseForDest();

	//Generate mouse movement events too
	IN_MouseMove();

	if (!joy_avail)
	{
		return;
	}

	
	// loop through the joystick buttons
	// key a joystick event or auxillary event for higher number buttons for each state change
	buttonstate = ji.dwButtons;
	for (i=0 ; i < joy_numbuttons ; i++)
	{
		if ( (buttonstate & (1<<i)) && !(joy_oldbuttonstate & (1<<i)) )
		{
			key_index = (i < 4) ? K_JOY1 : K_AUX1;
			Key_Event (key_index + i, true);
		}

		if ( !(buttonstate & (1<<i)) && (joy_oldbuttonstate & (1<<i)) )
		{
			key_index = (i < 4) ? K_JOY1 : K_AUX1;
			Key_Event (key_index + i, false);
		}
	}
	joy_oldbuttonstate = buttonstate;

	if (joy_haspov)
	{
		// convert POV information into 4 bits of state information
		// this avoids any potential problems related to moving from one
		// direction to another without going through the center position
		povstate = 0;
		if(ji.dwPOV != JOY_POVCENTERED)
		{
			if (ji.dwPOV == JOY_POVFORWARD)
				povstate |= 0x01;
			if (ji.dwPOV == JOY_POVRIGHT)
				povstate |= 0x02;
			if (ji.dwPOV == JOY_POVBACKWARD)
				povstate |= 0x04;
			if (ji.dwPOV == JOY_POVLEFT)
				povstate |= 0x08;
		}
		// determine which bits have changed and key an auxillary event for each change
		for (i=0 ; i < 4 ; i++)
		{
			if ( (povstate & (1<<i)) && !(joy_oldpovstate & (1<<i)) )
			{
				Key_Event (K_AUX29 + i, true);
			}

			if ( !(povstate & (1<<i)) && (joy_oldpovstate & (1<<i)) )
			{
				Key_Event (K_AUX29 + i, false);
			}
		}
		joy_oldpovstate = povstate;
	}
}


/* 
=============== 
IN_ReadJoystick
=============== 
*/  
qboolean IN_ReadJoystick (void)
{

	memset (&ji, 0, sizeof(ji));
	ji.dwSize = sizeof(ji);
	ji.dwFlags = joy_flags;

	if (joyGetPosEx (joy_id, &ji) == JOYERR_NOERROR)
	{
		// this is a hack -- there is a bug in the Logitech WingMan Warrior DirectInput Driver
		// rather than having 32768 be the zero point, they have the zero point at 32668
		// go figure -- anyway, now we get the full resolution out of the device
		if (joy_wwhack1.value != 0.0)
		{
			ji.dwUpos += 100;
		}
		return true;
	}
	else
	{
		// read error occurred
		// turning off the joystick seems too harsh for 1 read error,\
		// but what should be done?
		// Con_Printf ("IN_ReadJoystick: no response\n");
		// joy_avail = false;
		return false;
	}
}


/*
===========
IN_JoyMove
===========
*/
void IN_JoyMove (usercmd_t *cmd)
{
	float	speed, aspeed;
	float	fAxisValue, fTemp;
	int		i;

	// complete initialization if first time in
	// this is needed as cvars are not available at initialization time
	if( joy_advancedinit != true )
	{
		Joy_AdvancedUpdate_f();
		joy_advancedinit = true;
	}

	// verify joystick is available and that the user wants to use it
	if (!joy_avail || !in_joystick.value)
	{
		return; 
	}
 
	// collect the joystick data, if possible
	if (IN_ReadJoystick () != true)
	{
		return;
	}

	if (in_speed.state & 1)
		speed = cl_movespeedkey.value;
	else
		speed = 1;
	aspeed = speed * host_frametime;

	// loop through the axes
	for (i = 0; i < JOY_MAX_AXES; i++)
	{
		// get the floating point zero-centered, potentially-inverted data for the current axis
		fAxisValue = (float) *pdwRawValue[i];
		// move centerpoint to zero
		fAxisValue -= 32768.0;

		if (joy_wwhack2.value != 0.0)
		{
			if (dwAxisMap[i] == AxisTurn)
			{
				// this is a special formula for the Logitech WingMan Warrior
				// y=ax^b; where a = 300 and b = 1.3
				// also x values are in increments of 800 (so this is factored out)
				// then bounds check result to level out excessively high spin rates
				fTemp = 300.0 * pow(abs(fAxisValue) / 800.0, 1.3);
				if (fTemp > 14000.0)
					fTemp = 14000.0;
				// restore direction information
				fAxisValue = (fAxisValue > 0.0) ? fTemp : -fTemp;
			}
		}

		// convert range from -32768..32767 to -1..1 
		fAxisValue /= 32768.0;

		switch (dwAxisMap[i])
		{
		case AxisForward:
			if ((joy_advanced.value == 0.0) && (in_mlook.state & 1))
			{
				// user wants forward control to become look control
				if (fabs(fAxisValue) > joy_pitchthreshold.value)
				{		
					// if mouse invert is on, invert the joystick pitch value
					// only absolute control support here (joy_advanced is false)
					if (m_pitch.value < 0.0)
					{
						cl.viewangles[PITCH] -= (fAxisValue * joy_pitchsensitivity.value) * aspeed * cl_pitchspeed.value;
					}
					else
					{
						cl.viewangles[PITCH] += (fAxisValue * joy_pitchsensitivity.value) * aspeed * cl_pitchspeed.value;
					}
					V_StopPitchDrift();
				}
				else
				{
					// no pitch movement
					// disable pitch return-to-center unless requested by user
					// *** this code can be removed when the lookspring bug is fixed
					// *** the bug always has the lookspring feature on
					if(lookspring.value == 0.0)
						V_StopPitchDrift();
				}
			}
			else
			{
				// user wants forward control to be forward control
				if (fabs(fAxisValue) > joy_forwardthreshold.value)
				{
					cmd->forwardmove += (fAxisValue * joy_forwardsensitivity.value) * speed * cl_forwardspeed.value;
				}
			}
			break;

		case AxisSide:
			if (fabs(fAxisValue) > joy_sidethreshold.value)
			{
				cmd->sidemove += (fAxisValue * joy_sidesensitivity.value) * speed * cl_sidespeed.value;
			}
			break;

		case AxisTurn:
			if ((in_strafe.state & 1) || (lookstrafe.value && (in_mlook.state & 1)))
			{
				// user wants turn control to become side control
				if (fabs(fAxisValue) > joy_sidethreshold.value)
				{
					cmd->sidemove -= (fAxisValue * joy_sidesensitivity.value) * speed * cl_sidespeed.value;
				}
			}
			else
			{
				// user wants turn control to be turn control
				if (fabs(fAxisValue) > joy_yawthreshold.value)
				{
					if(dwControlMap[i] == JOY_ABSOLUTE_AXIS)
					{
						cl.viewangles[YAW] += (fAxisValue * joy_yawsensitivity.value) * aspeed * cl_yawspeed.value;
					}
					else
					{
						cl.viewangles[YAW] += (fAxisValue * joy_yawsensitivity.value) * speed * 180.0;
					}

				}
			}
			break;

		case AxisLook:
			if (in_mlook.state & 1)
			{
				if (fabs(fAxisValue) > joy_pitchthreshold.value)
				{
					// pitch movement detected and pitch movement desired by user
					if(dwControlMap[i] == JOY_ABSOLUTE_AXIS)
					{
						cl.viewangles[PITCH] += (fAxisValue * joy_pitchsensitivity.value) * aspeed * cl_pitchspeed.value;
					}
					else
					{
						cl.viewangles[PITCH] += (fAxisValue * joy_pitchsensitivity.value) * speed * 180.0;
					}
					V_StopPitchDrift();
				}
				else
				{
					// no pitch movement
					// disable pitch return-to-center unless requested by user
					// *** this code can be removed when the lookspring bug is fixed
					// *** the bug always has the lookspring feature on
					if(lookspring.value == 0.0)
						V_StopPitchDrift();
				}
			}
			break;

		default:
			break;
		}
	}

	// bounds check pitch
	if (cl.viewangles[PITCH] > 80.0)
		cl.viewangles[PITCH] = 80.0;
	if (cl.viewangles[PITCH] < -70.0)
		cl.viewangles[PITCH] = -70.0;
}