vid_svgalib.c

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	bsize = vid.rowbytes * vid.height;
	tsize = D_SurfaceCacheForRes (vid.width, vid.height);
	zsize = vid.width * vid.height * sizeof(*d_pzbuffer);

	VID_highhunkmark = Hunk_HighMark ();

	d_pzbuffer = Hunk_HighAllocName (bsize+tsize+zsize, "video");

	vid_surfcache = ((byte *)d_pzbuffer) + zsize;

	vid.conbuffer = vid.buffer = (pixel_t *)(((byte *)d_pzbuffer) + zsize + tsize);

	D_InitCaches (vid_surfcache, tsize);

// get goin'

	vga_setmode(current_mode);
	VID_SetPalette(palette);

	VGA_pagebase = vid.direct = framebuffer_ptr = (char *) vga_getgraphmem();
//		if (vga_setlinearaddressing()>0)
//			framebuffer_ptr = (char *) vga_getgraphmem();
	if (!framebuffer_ptr)
		Sys_Error("This mode isn't hapnin'\n");

	vga_setpage(0);

	svgalib_inited=1;

	vid.recalc_refdef = 1;				// force a surface cache flush

	return 0;
}

// 2001-09-18 New cvar system by Maddes (Init)  start
/*
===================
VID_Init_Cvars
===================
*/
void VID_Init_Cvars (void)
{
	vid_mode = Cvar_Get ("vid_mode", "5", CVAR_ORIGINAL);
	vid_redrawfull = Cvar_Get ("vid_redrawfull", "0", CVAR_ORIGINAL);
	vid_waitforrefresh= Cvar_Get ("vid_waitforrefresh", "0", CVAR_ARCHIVE|CVAR_ORIGINAL);
}
// 2001-09-18 New cvar system by Maddes (Init)  end

void VID_Init(unsigned char *palette)
{

	int i;
	int w, h, d;

	if (svgalib_inited)
		return;

//	Cmd_AddCommand ("gamma", VID_Gamma_f);

	if (UseDisplay)
	{
		vga_init();

		VID_InitModes();

// 2001-09-18 New cvar system by Maddes (Init)  start
/*
		vid_mode = Cvar_Get ("vid_mode", "5", CVAR_ORIGINAL);
		vid_redrawfull = Cvar_Get ("vid_redrawfull", "0", CVAR_ORIGINAL);
		vid_waitforrefresh= Cvar_Get ("vid_waitforrefresh", "0", CVAR_ARCHIVE|CVAR_ORIGINAL);
*/
// 2001-09-18 New cvar system by Maddes (Init)  end

		Cmd_AddCommand("vid_nummodes", VID_NumModes_f);
		Cmd_AddCommand("vid_describemode", VID_DescribeMode_f);
		Cmd_AddCommand("vid_describemodes", VID_DescribeModes_f);
		Cmd_AddCommand("vid_debug", VID_Debug_f);

	// interpret command-line params

		w = h = d = 0;
		if (getenv("GSVGAMODE"))
			current_mode = get_mode(getenv("GSVGAMODE"), w, h, d);
		else if (COM_CheckParm("-mode"))
			current_mode = get_mode(com_argv[COM_CheckParm("-mode")+1], w, h, d);
		else if (COM_CheckParm("-w") || COM_CheckParm("-h")
			|| COM_CheckParm("-d"))
		{
			if (COM_CheckParm("-w"))
				w = Q_atoi(com_argv[COM_CheckParm("-w")+1]);
			if (COM_CheckParm("-h"))
				h = Q_atoi(com_argv[COM_CheckParm("-h")+1]);
			if (COM_CheckParm("-d"))
				d = Q_atoi(com_argv[COM_CheckParm("-d")+1]);
			current_mode = get_mode(0, w, h, d);
		}
		else
			current_mode = G320x200x256;

	// set vid parameters
		VID_SetMode(current_mode, palette);

		VID_SetPalette(palette);

		// we do want to run in the background when switched away
		vga_runinbackground(1);
	}

	if (COM_CheckParm("-nokbd")) UseKeyboard = 0;

	if (UseKeyboard)
	{
		for (i=0 ; i<128 ; i++)
			scantokey[i] = ' ';

		scantokey[42] = K_SHIFT;
		scantokey[54] = K_SHIFT;
		scantokey[72] = K_UPARROW;
		scantokey[103] = K_UPARROW;
		scantokey[80] = K_DOWNARROW;
		scantokey[108] = K_DOWNARROW;
		scantokey[75] = K_LEFTARROW;
		scantokey[105] = K_LEFTARROW;
		scantokey[77] = K_RIGHTARROW;
		scantokey[106] = K_RIGHTARROW;
		scantokey[29] = K_CTRL;
		scantokey[97] = K_CTRL;
		scantokey[56] = K_ALT;
		scantokey[100] = K_ALT;
//		scantokey[58] = JK_CAPS;
//		scantokey[69] = JK_NUM_LOCK;
		scantokey[71] = K_HOME;
		scantokey[73] = K_PGUP;
		scantokey[79] = K_END;
		scantokey[81] = K_PGDN;
		scantokey[82] = K_INS;
		scantokey[83] = K_DEL;
		scantokey[1 ] = K_ESCAPE;
		scantokey[28] = K_ENTER;
		scantokey[15] = K_TAB;
		scantokey[14] = K_BACKSPACE;
		scantokey[119] = K_PAUSE;
    	scantokey[57] = ' ';

		scantokey[102] = K_HOME;
		scantokey[104] = K_PGUP;
		scantokey[107] = K_END;
		scantokey[109] = K_PGDN;
		scantokey[110] = K_INS;
		scantokey[111] = K_DEL;

		scantokey[2] = '1';
		scantokey[3] = '2';
		scantokey[4] = '3';
		scantokey[5] = '4';
		scantokey[6] = '5';
		scantokey[7] = '6';
		scantokey[8] = '7';
		scantokey[9] = '8';
		scantokey[10] = '9';
		scantokey[11] = '0';
		scantokey[12] = '-';
		scantokey[13] = '=';
		scantokey[41] = '`';
		scantokey[26] = '[';
		scantokey[27] = ']';
		scantokey[39] = ';';
		scantokey[40] = '\'';
		scantokey[51] = ',';
		scantokey[52] = '.';
		scantokey[53] = '/';
		scantokey[43] = '\\';

		scantokey[59] = K_F1;
		scantokey[60] = K_F2;
		scantokey[61] = K_F3;
		scantokey[62] = K_F4;
		scantokey[63] = K_F5;
		scantokey[64] = K_F6;
		scantokey[65] = K_F7;
		scantokey[66] = K_F8;
		scantokey[67] = K_F9;
		scantokey[68] = K_F10;
		scantokey[87] = K_F11;
		scantokey[88] = K_F12;
		scantokey[30] = 'a';
		scantokey[48] = 'b';
		scantokey[46] = 'c';
        scantokey[32] = 'd';
        scantokey[18] = 'e';
        scantokey[33] = 'f';
        scantokey[34] = 'g';
        scantokey[35] = 'h';
        scantokey[23] = 'i';
        scantokey[36] = 'j';
        scantokey[37] = 'k';
        scantokey[38] = 'l';
        scantokey[50] = 'm';
        scantokey[49] = 'n';
        scantokey[24] = 'o';
        scantokey[25] = 'p';
        scantokey[16] = 'q';
        scantokey[19] = 'r';
        scantokey[31] = 's';
        scantokey[20] = 't';
        scantokey[22] = 'u';
        scantokey[47] = 'v';
        scantokey[17] = 'w';
        scantokey[45] = 'x';
        scantokey[21] = 'y';
        scantokey[44] = 'z';

		if (keyboard_init())
			Sys_Error("keyboard_init() failed");
		keyboard_seteventhandler(keyhandler);
	}

}

void VID_Update(vrect_t *rects)
{
	if (!svgalib_inited)
		return;

	if (!vga_oktowrite())
		return; // can't update screen if it's not active

	if (vid_waitforrefresh->value)
		vga_waitretrace();

	if (VGA_planar)
		VGA_UpdatePlanarScreen (vid.buffer);

	else if (vid_redrawfull->value) {
		int total = vid.rowbytes * vid.height;
		int offset;

		for (offset=0;offset<total;offset+=0x10000) {
			vga_setpage(offset/0x10000);
			memcpy(framebuffer_ptr,
					vid.buffer + offset,
					((total-offset>0x10000)?0x10000:(total-offset)));
		}
	} else {
		int ycount;
		int offset;
		int vidpage=0;

		vga_setpage(0);

		while (rects)
		{
			ycount = rects->height;
			offset = rects->y * vid.rowbytes + rects->x;
			while (ycount--)
			{
				register int i = offset % 0x10000;

				if ((offset / 0x10000) != vidpage) {
					vidpage=offset / 0x10000;
					vga_setpage(vidpage);
				}
				if (rects->width + i > 0x10000) {
					memcpy(framebuffer_ptr + i,
							vid.buffer + offset,
							0x10000 - i);
					vga_setpage(++vidpage);
					memcpy(framebuffer_ptr,
							vid.buffer + offset + 0x10000 - i,
							rects->width - 0x10000 + i);
				} else
					memcpy(framebuffer_ptr + i,
							vid.buffer + offset,
							rects->width);
				offset += vid.rowbytes;
			}

			rects = rects->pnext;
		}
	}

	if (vid_mode->value != current_mode)
		VID_SetMode ((int)vid_mode->value, vid_current_palette);
}

static int dither;

void VID_DitherOn(void)
{
    if (dither == 0)
    {
//		R_ViewChanged (&vrect, sb_lines, vid.aspect);
        dither = 1;
    }
}

void VID_DitherOff(void)
{
    if (dither)
    {
//		R_ViewChanged (&vrect, sb_lines, vid.aspect);
        dither = 0;
    }
}

void Sys_SendKeyEvents(void)
{
	if (!svgalib_inited)
		return;

	if (UseKeyboard)
		while (keyboard_update());
}

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


void mousehandler(int buttonstate, int dx, int dy)
{
	mouse_buttonstate = buttonstate;
	mx += dx;
	my += dy;
}

// 2001-09-18 New cvar system by Maddes (Init)  start
/*
===================
IN_Init_Cvars
===================
*/
void IN_Init_Cvars (void)
{
	m_filter = Cvar_Get ("m_filter", "0", CVAR_ORIGINAL);
}
// 2001-09-18 New cvar system by Maddes (Init)  end

void IN_Init(void)
{

	int mtype;
	char *mousedev;
	int mouserate;

	if (UseMouse)
	{
		mouse_button_commands[0] = Cvar_Get ("mouse1", "+attack", CVAR_ORIGINAL);
		mouse_button_commands[1] = Cvar_Get ("mouse2", "+strafe", CVAR_ORIGINAL);
		mouse_button_commands[2] = Cvar_Get ("mouse3", "+forward", CVAR_ORIGINAL);
//		m_filter = Cvar_Get ("m_filter", "0", CVAR_ORIGINAL);	// 2001-09-18 New cvar system by Maddes (Init)

		Cmd_AddCommand ("force_centerview", Force_CenterView_f);

		mouse_buttons = 3;

		mtype = vga_getmousetype();

		mousedev = "/dev/mouse";
		if (getenv("MOUSEDEV")) mousedev = getenv("MOUSEDEV");
		if (COM_CheckParm("-mdev"))
			mousedev = com_argv[COM_CheckParm("-mdev")+1];

		mouserate = 1200;
		if (getenv("MOUSERATE")) mouserate = atoi(getenv("MOUSERATE"));
		if (COM_CheckParm("-mrate"))
			mouserate = atoi(com_argv[COM_CheckParm("-mrate")+1]);

//		printf("Mouse: dev=%s,type=%s,speed=%d\n",
//			mousedev, mice[mtype].name, mouserate);
		if (mouse_init(mousedev, mtype, mouserate))
		{
			Con_Printf("No mouse found\n");
			UseMouse = 0;
		}
		else
			mouse_seteventhandler(mousehandler);

	}

}

void IN_Shutdown(void)
{
	if (UseMouse)
		mouse_close();
}

/*
===========
IN_Commands
===========
*/
void IN_Commands (void)
{
	if (UseMouse && cls.state != ca_dedicated)
	{
		// poll mouse values
		while (mouse_update())
			;

		// perform button actions
		if ((mouse_buttonstate & MOUSE_LEFTBUTTON) &&
			!(mouse_oldbuttonstate & MOUSE_LEFTBUTTON))
			Key_Event (K_MOUSE1, true);
		else if (!(mouse_buttonstate & MOUSE_LEFTBUTTON) &&
			(mouse_oldbuttonstate & MOUSE_LEFTBUTTON))
			Key_Event (K_MOUSE1, false);

		if ((mouse_buttonstate & MOUSE_RIGHTBUTTON) &&
			!(mouse_oldbuttonstate & MOUSE_RIGHTBUTTON))
			Key_Event (K_MOUSE2, true);
		else if (!(mouse_buttonstate & MOUSE_RIGHTBUTTON) &&
			(mouse_oldbuttonstate & MOUSE_RIGHTBUTTON))
			Key_Event (K_MOUSE2, false);

		if ((mouse_buttonstate & MOUSE_MIDDLEBUTTON) &&
			!(mouse_oldbuttonstate & MOUSE_MIDDLEBUTTON))
			Key_Event (K_MOUSE3, true);
		else if (!(mouse_buttonstate & MOUSE_MIDDLEBUTTON) &&
			(mouse_oldbuttonstate & MOUSE_MIDDLEBUTTON))
			Key_Event (K_MOUSE3, false);

		mouse_oldbuttonstate = mouse_buttonstate;
	}
}

/*
===========
IN_Move
===========
*/
void IN_MouseMove (usercmd_t *cmd)
{
	if (!UseMouse)
		return;

	// poll mouse values
	while (mouse_update())
		;

	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;
	mx = my = 0; // clear for next update

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

// add mouse X/Y movement to cmd
	if ( (in_strafe.state & 1) || (lookstrafe->value && ((in_mlook.state & 1) ^ ((int)m_look->value & 1)) ))	// 2001-12-16 M_LOOK cvar by Heffo/Maddes
		cmd->sidemove += m_side->value * mouse_x;
	else
		cl.viewangles[YAW] -= m_yaw->value * mouse_x;

	if ((in_mlook.state & 1) ^ ((int)m_look->value & 1))	// 2001-12-16 M_LOOK cvar by Heffo/Maddes
		V_StopPitchDrift ();

	if ( ((in_mlook.state & 1) ^ ((int)m_look->value & 1)) && !(in_strafe.state & 1))	// 2001-12-16 M_LOOK cvar by Heffo/Maddes
	{
		cl.viewangles[PITCH] += m_pitch->value * mouse_y;
		if (cl.viewangles[PITCH] > 80)
			cl.viewangles[PITCH] = 80;
		if (cl.viewangles[PITCH] < -70)
			cl.viewangles[PITCH] = -70;
	}
	else
	{
		if ((in_strafe.state & 1) && noclip_anglehack)
			cmd->upmove -= m_forward->value * mouse_y;
		else
			cmd->forwardmove -= m_forward->value * mouse_y;
	}
}

void IN_Move (usercmd_t *cmd)
{
	IN_MouseMove(cmd);
}


/*
================
VID_ModeInfo
================
*/
char *VID_ModeInfo (int modenum)
{
	static char	*badmodestr = "Bad mode number";
	static char modestr[40];

	if (modenum == 0)
	{
		sprintf (modestr, "%d x %d, %d bpp",
				 vid.width, vid.height, modes[current_mode].bytesperpixel*8);
		return (modestr);
	}
	else
	{
		return (badmodestr);
	}
}