in_win.c

Quake 2 Source code for students by Theerthan You can also download from idsoftwares.com

/*
Copyright (C) 1997-2001 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 "../client/client.h"
#include "winquake.h"

extern	unsigned	sys_msg_time;

// 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, AxisUp
};

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];

cvar_t	*in_mouse;
cvar_t	*in_joystick;


// 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	*joy_name;
cvar_t	*joy_advanced;
cvar_t	*joy_advaxisx;
cvar_t	*joy_advaxisy;
cvar_t	*joy_advaxisz;
cvar_t	*joy_advaxisr;
cvar_t	*joy_advaxisu;
cvar_t	*joy_advaxisv;
cvar_t	*joy_forwardthreshold;
cvar_t	*joy_sidethreshold;
cvar_t	*joy_pitchthreshold;
cvar_t	*joy_yawthreshold;
cvar_t	*joy_forwardsensitivity;
cvar_t	*joy_sidesensitivity;
cvar_t	*joy_pitchsensitivity;
cvar_t	*joy_yawsensitivity;
cvar_t	*joy_upthreshold;
cvar_t	*joy_upsensitivity;

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

int			joy_id;
DWORD		joy_flags;
DWORD		joy_numbuttons;

static JOYINFOEX	ji;

qboolean	in_appactive;

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

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

  MOUSE CONTROL

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

// mouse variables
cvar_t	*m_filter;

qboolean	mlooking;

void IN_MLookDown (void) { mlooking = true; }
void IN_MLookUp (void) {
mlooking = false;
if (!freelook->value && lookspring->value)
		IN_CenterView ();
}

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

int			old_x, old_y;

qboolean	mouseactive;	// false when not focus app

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

int			window_center_x, window_center_y;
RECT		window_rect;


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

Called when the window gains focus or changes in some way
===========
*/
void IN_ActivateMouse (void)
{
	int		width, height;

	if (!mouseinitialized)
		return;
	if (!in_mouse->value)
	{
		mouseactive = false;
		return;
	}
	if (mouseactive)
		return;

	mouseactive = true;

	if (mouseparmsvalid)
		restore_spi = SystemParametersInfo (SPI_SETMOUSE, 0, newmouseparms, 0);

	width = GetSystemMetrics (SM_CXSCREEN);
	height = GetSystemMetrics (SM_CYSCREEN);

	GetWindowRect ( cl_hwnd, &window_rect);
	if (window_rect.left < 0)
		window_rect.left = 0;
	if (window_rect.top < 0)
		window_rect.top = 0;
	if (window_rect.right >= width)
		window_rect.right = width-1;
	if (window_rect.bottom >= height-1)
		window_rect.bottom = height-1;

	window_center_x = (window_rect.right + window_rect.left)/2;
	window_center_y = (window_rect.top + window_rect.bottom)/2;

	SetCursorPos (window_center_x, window_center_y);

	old_x = window_center_x;
	old_y = window_center_y;

	SetCapture ( cl_hwnd );
	ClipCursor (&window_rect);
	while (ShowCursor (FALSE) >= 0)
		;
}


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

Called when the window loses focus
===========
*/
void IN_DeactivateMouse (void)
{
	if (!mouseinitialized)
		return;
	if (!mouseactive)
		return;

	if (restore_spi)
		SystemParametersInfo (SPI_SETMOUSE, 0, originalmouseparms, 0);

	mouseactive = false;

	ClipCursor (NULL);
	ReleaseCapture ();
	while (ShowCursor (TRUE) < 0)
		;
}



/*
===========
IN_StartupMouse
===========
*/
void IN_StartupMouse (void)
{
	cvar_t		*cv;

	cv = Cvar_Get ("in_initmouse", "1", CVAR_NOSET);
	if ( !cv->value ) 
		return; 

	mouseinitialized = true;
	mouseparmsvalid = SystemParametersInfo (SPI_GETMOUSE, 0, originalmouseparms, 0);
	mouse_buttons = 3;
}

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

	if (!mouseinitialized)
		return;

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

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


/*
===========
IN_MouseMove
===========
*/
void IN_MouseMove (usercmd_t *cmd)
{
	int		mx, my;

	if (!mouseactive)
		return;

	// find mouse movement
	if (!GetCursorPos (&current_pos))
		return;

	mx = current_pos.x - window_center_x;
	my = current_pos.y - window_center_y;

#if 0
	if (!mx && !my)
		return;
#endif

	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;
	}

	old_mouse_x = mx;
	old_mouse_y = my;

	mouse_x *= sensitivity->value;
	mouse_y *= sensitivity->value;

// add mouse X/Y movement to cmd
	if ( (in_strafe.state & 1) || (lookstrafe->value && mlooking ))
		cmd->sidemove += m_side->value * mouse_x;
	else
		cl.viewangles[YAW] -= m_yaw->value * mouse_x;

	if ( (mlooking || freelook->value) && !(in_strafe.state & 1))
	{
		cl.viewangles[PITCH] += m_pitch->value * mouse_y;
	}
	else
	{
		cmd->forwardmove -= m_forward->value * mouse_y;
	}

	// force the mouse to the center, so there's room to move
	if (mx || my)
		SetCursorPos (window_center_x, window_center_y);
}


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

VIEW CENTERING

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

cvar_t	*v_centermove;
cvar_t	*v_centerspeed;


/*
===========
IN_Init
===========
*/
void IN_Init (void)
{
	// mouse variables
	m_filter				= Cvar_Get ("m_filter",					"0",		0);
    in_mouse				= Cvar_Get ("in_mouse",					"1",		CVAR_ARCHIVE);

	// joystick variables
	in_joystick				= Cvar_Get ("in_joystick",				"0",		CVAR_ARCHIVE);
	joy_name				= Cvar_Get ("joy_name",					"joystick",	0);
	joy_advanced			= Cvar_Get ("joy_advanced",				"0",		0);
	joy_advaxisx			= Cvar_Get ("joy_advaxisx",				"0",		0);
	joy_advaxisy			= Cvar_Get ("joy_advaxisy",				"0",		0);
	joy_advaxisz			= Cvar_Get ("joy_advaxisz",				"0",		0);
	joy_advaxisr			= Cvar_Get ("joy_advaxisr",				"0",		0);
	joy_advaxisu			= Cvar_Get ("joy_advaxisu",				"0",		0);
	joy_advaxisv			= Cvar_Get ("joy_advaxisv",				"0",		0);
	joy_forwardthreshold	= Cvar_Get ("joy_forwardthreshold",		"0.15",		0);
	joy_sidethreshold		= Cvar_Get ("joy_sidethreshold",		"0.15",		0);
	joy_upthreshold  		= Cvar_Get ("joy_upthreshold",			"0.15",		0);
	joy_pitchthreshold		= Cvar_Get ("joy_pitchthreshold",		"0.15",		0);
	joy_yawthreshold		= Cvar_Get ("joy_yawthreshold",			"0.15",		0);
	joy_forwardsensitivity	= Cvar_Get ("joy_forwardsensitivity",	"-1",		0);
	joy_sidesensitivity		= Cvar_Get ("joy_sidesensitivity",		"-1",		0);
	joy_upsensitivity		= Cvar_Get ("joy_upsensitivity",		"-1",		0);
	joy_pitchsensitivity	= Cvar_Get ("joy_pitchsensitivity",		"1",		0);
	joy_yawsensitivity		= Cvar_Get ("joy_yawsensitivity",		"-1",		0);

	// centering
	v_centermove			= Cvar_Get ("v_centermove",				"0.15",		0);
	v_centerspeed			= Cvar_Get ("v_centerspeed",			"500",		0);

	Cmd_AddCommand ("+mlook", IN_MLookDown);
	Cmd_AddCommand ("-mlook", IN_MLookUp);

	Cmd_AddCommand ("joy_advancedupdate", Joy_AdvancedUpdate_f);

	IN_StartupMouse ();
	IN_StartupJoystick ();
}

/*
===========
IN_Shutdown
===========
*/
void IN_Shutdown (void)
{
	IN_DeactivateMouse ();
}


/*
===========
IN_Activate

Called when the main window gains or loses focus.
The window may have been destroyed and recreated
between a deactivate and an activate.
===========
*/
void IN_Activate (qboolean active)
{
	in_appactive = active;
	mouseactive = !active;		// force a new window check or turn off
}


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

Called every frame, even if not generating commands
==================
*/
void IN_Frame (void)
{
	if (!mouseinitialized)
		return;

	if (!in_mouse || !in_appactive)
	{
		IN_DeactivateMouse ();
		return;
	}

	if ( !cl.refresh_prepped
		|| cls.key_dest == key_console
		|| cls.key_dest == key_menu)
	{
		// temporarily deactivate if in fullscreen
		if (Cvar_VariableValue ("vid_fullscreen") == 0)
		{
			IN_DeactivateMouse ();
			return;
		}
	}

	IN_ActivateMouse ();
}