/*
 * 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.
 *
 * =======================================================================
 *
 * This file implements the 2D stuff. For example the HUD and the
 * networkgraph.
 *
 * =======================================================================
 */

#include "header/client.h"

float		scr_con_current; /* aproaches scr_conlines at scr_conspeed */
float		scr_conlines; /* 0.0 to 1.0 lines of console to display */

qboolean	scr_initialized; /* ready to draw */

int			scr_draw_loading;

vrect_t		scr_vrect; /* position of render window on screen */

cvar_t		*scr_viewsize;
cvar_t		*scr_conspeed;
cvar_t		*scr_centertime;
cvar_t		*scr_showturtle;
cvar_t		*scr_showpause;

cvar_t		*scr_netgraph;
cvar_t		*scr_timegraph;
cvar_t		*scr_debuggraph;
cvar_t		*scr_graphheight;
cvar_t		*scr_graphscale;
cvar_t		*scr_graphshift;
cvar_t		*scr_drawall;

typedef struct {
	int		x1, y1, x2, y2;
} dirty_t;

dirty_t		scr_dirty, scr_old_dirty[2];

char		crosshair_pic[MAX_QPATH];
int			crosshair_width, crosshair_height;

extern cvar_t *cl_drawfps;
extern cvar_t *crosshair_scale;

void SCR_TimeRefresh_f (void);
void SCR_Loading_f (void);

/*
 * A new packet was just parsed
 */
void CL_AddNetgraph (void) {
	int		i;
	int		in;
	int		ping;

	/* if using the debuggraph for something else,
	   don't add the net lines */
	if (scr_debuggraph->value || scr_timegraph->value)
		return;

	for (i=0 ; i<cls.netchan.dropped ; i++)
		SCR_DebugGraph (30, 0x40);

	for (i=0 ; i<cl.surpressCount ; i++)
		SCR_DebugGraph (30, 0xdf);

	/* see what the latency was on this packet */
	in = cls.netchan.incoming_acknowledged & (CMD_BACKUP-1);
	ping = cls.realtime - cl.cmd_time[in];
	ping /= 30;

	if (ping > 30)
		ping = 30;

	SCR_DebugGraph ((float)ping, 0xd0);
}

typedef struct {
	float	value;
	int		color;
} graphsamp_t;

static	int			current;
static	graphsamp_t	values[2024];

void SCR_DebugGraph (float value, int color) {
	values[current&2023].value = value;
	values[current&2023].color = color;
	current++;
}

void SCR_DrawDebugGraph (void) {
	int		a, x, y, w, i, h;
	float	v;
	int		color;

	/* draw the graph */
	w = scr_vrect.width;

	x = scr_vrect.x;
	y = scr_vrect.y+scr_vrect.height;
	re.DrawFill (x, y-scr_graphheight->value,
	             w, scr_graphheight->value, 8);

	for (a=0 ; a<w ; a++) {
		i = (current-1-a+1024) & 1023;
		v = values[i].value;
		color = values[i].color;
		v = v*scr_graphscale->value + scr_graphshift->value;

		if (v < 0)
			v += scr_graphheight->value * (1+(int)(-v/scr_graphheight->value));

		h = (int)v % (int)scr_graphheight->value;
		re.DrawFill (x+w-1-a, y - h, 1,	h, color);
	}
}

char		scr_centerstring[1024];
float		scr_centertime_start; /* for slow victory printing */
float		scr_centertime_off;
int			scr_center_lines;
int			scr_erase_center;

/*
 * Called for important messages that should stay
 * in the center of the screen for a few moments
 */
void SCR_CenterPrint (char *str) {
	char	*s;
	char	line[64];
	int		i, j, l;

	strncpy (scr_centerstring, str, sizeof(scr_centerstring)-1);
	scr_centertime_off = scr_centertime->value;
	scr_centertime_start = cl.time;

	/* count the number of lines for centering */
	scr_center_lines = 1;
	s = str;

	while (*s) {
		if (*s == '\n')
			scr_center_lines++;

		s++;
	}

	/* echo it to the console */
	Com_Printf("\n\n\35\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\37\n\n");

	s = str;

	do {
		/* scan the width of the line */
		for (l=0 ; l<40 ; l++)
			if (s[l] == '\n' || !s[l])
				break;

		for (i=0 ; i<(40-l)/2 ; i++)
			line[i] = ' ';

		for (j=0 ; j<l ; j++) {
			line[i++] = s[j];
		}

		line[i] = '\n';
		line[i+1] = 0;

		Com_Printf ("%s", line);

		while (*s && *s != '\n')
			s++;

		if (!*s)
			break;

		s++; /* skip the \n */
	} while (1);

	Com_Printf("\n\n\35\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\36\37\n\n");
	Con_ClearNotify ();
}

void SCR_DrawCenterString (void) {
	char	*start;
	int		l;
	int		j;
	int		x, y;
	int		remaining;

	/* the finale prints the characters one at a time */
	remaining = 9999;

	scr_erase_center = 0;
	start = scr_centerstring;

	if (scr_center_lines <= 4)
		y = viddef.height*0.35;

	else
		y = 48;

	do {
		/* scan the width of the line */
		for (l=0 ; l<40 ; l++)
			if (start[l] == '\n' || !start[l])
				break;

		x = (viddef.width - l*8)/2;
		SCR_AddDirtyPoint (x, y);

		for (j=0 ; j<l ; j++, x+=8) {
			re.DrawChar (x, y, start[j]);

			if (!remaining--)
				return;
		}

		SCR_AddDirtyPoint (x, y+8);

		y += 8;

		while (*start && *start != '\n')
			start++;

		if (!*start)
			break;

		start++; /* skip the \n */
	} while (1);
}

void SCR_CheckDrawCenterString (void) {
	scr_centertime_off -= cls.frametime;

	if (scr_centertime_off <= 0)
		return;

	SCR_DrawCenterString ();
}

/*
 * Sets scr_vrect, the coordinates of the rendered window
 */
static void SCR_CalcVrect (void) {
	int		size;

	/* bound viewsize */
	if (scr_viewsize->value < 40)
		Cvar_Set ("viewsize","40");

	if (scr_viewsize->value > 100)
		Cvar_Set ("viewsize","100");

	size = scr_viewsize->value;

	scr_vrect.width = viddef.width*size/100;
	scr_vrect.width &= ~7;

	scr_vrect.height = viddef.height*size/100;
	scr_vrect.height &= ~1;

	scr_vrect.x = (viddef.width - scr_vrect.width)/2;
	scr_vrect.y = (viddef.height - scr_vrect.height)/2;
}

/*
 * Keybinding command
 */
void SCR_SizeUp_f (void) {
	Cvar_SetValue ("viewsize",(float)scr_viewsize->value+10);
}

/*
 *Keybinding command
 */
void SCR_SizeDown_f (void) {
	Cvar_SetValue ("viewsize",(float)scr_viewsize->value-10);
}

/*
 * Set a specific sky and rotation speed
 */
void SCR_Sky_f (void) {
	float	rotate;
	vec3_t	axis;

	if (Cmd_Argc() < 2) {
		Com_Printf ("Usage: sky <basename> <rotate> <axis x y z>\n");
		return;
	}

	if (Cmd_Argc() > 2)
		rotate = (float)atof(Cmd_Argv(2));

	else
		rotate = 0;

	if (Cmd_Argc() == 6) {
		axis[0] = (float)atof(Cmd_Argv(3));
		axis[1] = (float)atof(Cmd_Argv(4));
		axis[2] = (float)atof(Cmd_Argv(5));

	} else {
		axis[0] = 0;
		axis[1] = 0;
		axis[2] = 1;
	}

	re.SetSky (Cmd_Argv(1), rotate, axis);
}

void SCR_Init (void) {
	scr_viewsize = Cvar_Get ("viewsize", "100", CVAR_ARCHIVE);
	scr_conspeed = Cvar_Get ("scr_conspeed", "3", 0);
	scr_showturtle = Cvar_Get ("scr_showturtle", "0", 0);
	scr_showpause = Cvar_Get ("scr_showpause", "1", 0);
	scr_centertime = Cvar_Get ("scr_centertime", "2.5", 0);
	scr_netgraph = Cvar_Get ("netgraph", "0", 0);
	scr_timegraph = Cvar_Get ("timegraph", "0", 0);
	scr_debuggraph = Cvar_Get ("debuggraph", "0", 0);
	scr_graphheight = Cvar_Get ("graphheight", "32", 0);
	scr_graphscale = Cvar_Get ("graphscale", "1", 0);
	scr_graphshift = Cvar_Get ("graphshift", "0", 0);
	scr_drawall = Cvar_Get ("scr_drawall", "0", 0);

	/* register our commands */
	Cmd_AddCommand ("timerefresh",SCR_TimeRefresh_f);
	Cmd_AddCommand ("loading",SCR_Loading_f);
	Cmd_AddCommand ("sizeup",SCR_SizeUp_f);
	Cmd_AddCommand ("sizedown",SCR_SizeDown_f);
	Cmd_AddCommand ("sky",SCR_Sky_f);

	scr_initialized = true;
}

void SCR_DrawNet (void) {
	if (cls.netchan.outgoing_sequence - cls.netchan.incoming_acknowledged
	        < CMD_BACKUP-1)
		return;

	re.DrawPic (scr_vrect.x+64, scr_vrect.y, "net");
}

void SCR_DrawPause (void) {
	int		w, h;

	if (!scr_showpause->value) /* turn off for screenshots */
		return;

	if (!cl_paused->value)
		return;

	re.DrawGetPicSize (&w, &h, "pause");
	re.DrawPic ((viddef.width-w)/2, viddef.height/2 + 8, "pause");
}

void SCR_DrawLoading (void) {
	int		w, h;

	if (!scr_draw_loading)
		return;

	scr_draw_loading = false;
	re.DrawGetPicSize (&w, &h, "loading");
	re.DrawPic ((viddef.width-w)/2, (viddef.height-h)/2, "loading");
}

/*
 * Scroll it up or down
 */
void SCR_RunConsole (void) {
	/* decide on the height of the console */
	if (cls.key_dest == key_console)
		scr_conlines = 0.5; /* half screen */

	else
		scr_conlines = 0; /* none visible */

	if (scr_conlines < scr_con_current) {
		Cvar_SetValue("windowed_mouse", 1);
		scr_con_current -= scr_conspeed->value*cls.frametime;

		if (scr_conlines > scr_con_current)
			scr_con_current = scr_conlines;

	} else if (scr_conlines > scr_con_current) {
		Cvar_SetValue("windowed_mouse", 0);
		scr_con_current += scr_conspeed->value*cls.frametime;

		if (scr_conlines < scr_con_current)
			scr_con_current = scr_conlines;
	}

}

void SCR_DrawConsole (void) {
	Con_CheckResize ();

	if (cls.state == ca_disconnected || cls.state == ca_connecting) {
		/* forced full screen console */
		Con_DrawConsole (1.0);
		return;
	}

	if (cls.state != ca_active || !cl.refresh_prepped) {
		/* connected, but can't render */
		Con_DrawConsole (0.5);
		re.DrawFill (0, viddef.height/2, viddef.width, viddef.height/2, 0);
		return;
	}

	if (scr_con_current) {
		Con_DrawConsole (scr_con_current);

	} else {
		if (cls.key_dest == key_game || cls.key_dest == key_message)
			Con_DrawNotify (); /* only draw notify in game */
	}
}

void SCR_BeginLoadingPlaque (void) {
	S_StopAllSounds ();
	cl.sound_prepped = false; /* don't play ambients */
	CDAudio_Stop ();
#ifdef OGG
	OGG_Stop();
#endif

	if (cls.disable_screen)
		return;

	if (developer->value)
		return;

	if (cls.state == ca_disconnected)
		/* if at console, don't bring up the plaque */
		return;

	if (cls.key_dest == key_console)
		return;

	if (cl.cinematictime > 0)
		scr_draw_loading = 2; /* clear to balack first */

	else
		scr_draw_loading = 1;

	SCR_UpdateScreen ();
	SCR_StopCinematic();
	cls.disable_screen = Sys_Milliseconds ();
	cls.disable_servercount = cl.servercount;
}

void SCR_EndLoadingPlaque (void) {
	cls.disable_screen = 0;
	Con_ClearNotify ();
}

void SCR_Loading_f (void) {
	SCR_BeginLoadingPlaque ();
}

int entitycmpfnc( const entity_t *a, const entity_t *b ) {
	/* all other models are sorted by model then skin */
	if ( a->model == b->model ) {
		return ( ( INT ) a->skin - ( INT ) b->skin );

	} else {
		return ( ( INT ) a->model - ( INT ) b->model );
	}
}

void SCR_TimeRefresh_f (void) {
	int		i;
	int		start, stop;
	float	time;

	if ( cls.state != ca_active )
		return;

	start = Sys_Milliseconds ();

	if (Cmd_Argc() == 2) {
		/* run without page flipping */
		int j;

		for (j = 0; j < 1000; j++) {
			re.BeginFrame( 0 );

			for (i=0 ; i<128 ; i++) {
				cl.refdef.viewangles[1] = i/128.0f*360.0f;
				re.RenderFrame (&cl.refdef);
			}

			re.EndFrame();
		}

	} else {
		for (i=0 ; i<128 ; i++) {
			cl.refdef.viewangles[1] = i/128.0f*360.0f;

			re.BeginFrame( 0 );
			re.RenderFrame (&cl.refdef);
			re.EndFrame();
		}
	}

	stop = Sys_Milliseconds ();
	time = (stop-start)/1000.0f;
	Com_Printf ("%f seconds (%f fps)\n", time, 128/time);
}

void SCR_AddDirtyPoint (int x, int y) {
	if (x < scr_dirty.x1)
		scr_dirty.x1 = x;

	if (x > scr_dirty.x2)
		scr_dirty.x2 = x;

	if (y < scr_dirty.y1)
		scr_dirty.y1 = y;

	if (y > scr_dirty.y2)
		scr_dirty.y2 = y;
}

void SCR_DirtyScreen (void) {
	SCR_AddDirtyPoint (0, 0);
	SCR_AddDirtyPoint (viddef.width-1, viddef.height-1);
}

/*
 * Clear any parts of the tiled background that were drawn on last frame
 */
void SCR_TileClear (void) {
	int		i;
	int		top, bottom, left, right;
	dirty_t	clear;

	if (scr_con_current == 1.0)
		return; /* full screen console */

	if (scr_viewsize->value == 100)
		return; /* full screen rendering */

	if (cl.cinematictime > 0)
		return; /* full screen cinematic */

	/* erase rect will be the union of the past three frames
	   so tripple buffering works properly */
	clear = scr_dirty;

	for (i=0 ; i<2 ; i++) {
		if (scr_old_dirty[i].x1 < clear.x1)
			clear.x1 = scr_old_dirty[i].x1;

		if (scr_old_dirty[i].x2 > clear.x2)
			clear.x2 = scr_old_dirty[i].x2;

		if (scr_old_dirty[i].y1 < clear.y1)
			clear.y1 = scr_old_dirty[i].y1;

		if (scr_old_dirty[i].y2 > clear.y2)
			clear.y2 = scr_old_dirty[i].y2;
	}

	scr_old_dirty[1] = scr_old_dirty[0];
	scr_old_dirty[0] = scr_dirty;

	scr_dirty.x1 = 9999;
	scr_dirty.x2 = -9999;
	scr_dirty.y1 = 9999;
	scr_dirty.y2 = -9999;

	/* don't bother with anything convered by the console */
	top = (int)(scr_con_current*viddef.height);

	if (top >= clear.y1)
		clear.y1 = top;

	if (clear.y2 <= clear.y1)
		return; /* nothing disturbed */

	top = scr_vrect.y;
	bottom = top + scr_vrect.height-1;
	left = scr_vrect.x;
	right = left + scr_vrect.width-1;

	if (clear.y1 < top) {
		/* clear above view screen */
		i = clear.y2 < top-1 ? clear.y2 : top-1;
		re.DrawTileClear (clear.x1 , clear.y1,
		                  clear.x2 - clear.x1 + 1, i - clear.y1+1, "backtile");
		clear.y1 = top;
	}

	if (clear.y2 > bottom) {
		/* clear below view screen */
		i = clear.y1 > bottom+1 ? clear.y1 : bottom+1;
		re.DrawTileClear (clear.x1, i,
		                  clear.x2-clear.x1+1, clear.y2-i+1, "backtile");
		clear.y2 = bottom;
	}

	if (clear.x1 < left) {
		/* clear left of view screen */
		i = clear.x2 < left-1 ? clear.x2 : left-1;
		re.DrawTileClear (clear.x1, clear.y1,
		                  i-clear.x1+1, clear.y2 - clear.y1 + 1, "backtile");
		clear.x1 = left;
	}

	if (clear.x2 > right) {
		/* clear left of view screen */
		i = clear.x1 > right+1 ? clear.x1 : right+1;
		re.DrawTileClear (i, clear.y1,
		                  clear.x2-i+1, clear.y2 - clear.y1 + 1, "backtile");
		clear.x2 = right;
	}

}

#define STAT_MINUS	10
char	*sb_nums[2][11] = {
	{
		"num_0", "num_1", "num_2", "num_3", "num_4", "num_5",
		"num_6", "num_7", "num_8", "num_9", "num_minus"
	},
	{
		"anum_0", "anum_1", "anum_2", "anum_3", "anum_4", "anum_5",
		"anum_6", "anum_7", "anum_8", "anum_9", "anum_minus"
	}
};

#define	ICON_WIDTH	24
#define	ICON_HEIGHT	24
#define	CHAR_WIDTH	16
#define	ICON_SPACE	8

/*
 * Allow embedded \n in the string
 */
void SizeHUDString (char *string, int *w, int *h) {
	int		lines, width, current;

	lines = 1;
	width = 0;

	current = 0;

	while (*string) {
		if (*string == '\n') {
			lines++;
			current = 0;

		} else {
			current++;

			if (current > width)
				width = current;
		}

		string++;
	}

	*w = width * 8;
	*h = lines * 8;
}

void DrawHUDString (char *string, int x, int y, int centerwidth, int xor) {
	int		margin;
	char	line[1024];
	int		width;
	int		i;

	margin = x;

	while (*string) {
		/* scan out one line of text from the string */
		width = 0;

		while (*string && *string != '\n')
			line[width++] = *string++;

		line[width] = 0;

		if (centerwidth)
			x = margin + (centerwidth - width*8)/2;

		else
			x = margin;

		for (i=0 ; i<width ; i++) {
			re.DrawChar (x, y, line[i]^xor);
			x += 8;
		}

		if (*string) {
			string++; /* skip the \n */
			x = margin;
			y += 8;
		}
	}
}

void SCR_DrawField (int x, int y, int color, int width, int value) {
	char	num[16], *ptr;
	int		l;
	int		frame;

	if (width < 1)
		return;

	/* draw number string */
	if (width > 5)
		width = 5;

	SCR_AddDirtyPoint (x, y);
	SCR_AddDirtyPoint (x+width*CHAR_WIDTH+2, y+23);

	Com_sprintf (num, sizeof(num), "%i", value);
	l = (int)strlen(num);

	if (l > width)
		l = width;

	x += 2 + CHAR_WIDTH*(width - l);

	ptr = num;

	while (*ptr && l) {
		if (*ptr == '-')
			frame = STAT_MINUS;

		else
			frame = *ptr -'0';

		re.DrawPic (x,y,sb_nums[color][frame]);
		x += CHAR_WIDTH;
		ptr++;
		l--;
	}
}

/*
 * Allows rendering code to cache all needed sbar graphics
 */
void SCR_TouchPics (void) {
	int		i, j;

	for (i=0 ; i<2 ; i++)
		for (j=0 ; j<11 ; j++)
			re.RegisterPic (sb_nums[i][j]);

	if (crosshair->value) {
		if (crosshair->value > 3 || crosshair->value < 0)
			crosshair->value = 3;

		Com_sprintf (crosshair_pic, sizeof(crosshair_pic), "ch%i", (int)(crosshair->value));
		re.DrawGetPicSize (&crosshair_width, &crosshair_height, crosshair_pic);

		if (!crosshair_width)
			crosshair_pic[0] = 0;

	}
}

void SCR_ExecuteLayoutString (char *s) {
	int		x, y;
	int		value;
	char	*token;
	int		width;
	int		index;
	clientinfo_t	*ci;

	if (cls.state != ca_active || !cl.refresh_prepped)
		return;

	if (!s[0])
		return;

	x = 0;
	y = 0;
	width = 3;

	while (s) {
		token = COM_Parse (&s);

		if (!strcmp(token, "xl")) {
			token = COM_Parse (&s);
			x = atoi(token);
			continue;
		}

		if (!strcmp(token, "xr")) {
			token = COM_Parse (&s);
			x = viddef.width + atoi(token);
			continue;
		}

		if (!strcmp(token, "xv")) {
			token = COM_Parse (&s);
			x = viddef.width/2 - 160 + atoi(token);
			continue;
		}

		if (!strcmp(token, "yt")) {
			token = COM_Parse (&s);
			y = atoi(token);
			continue;
		}

		if (!strcmp(token, "yb")) {
			token = COM_Parse (&s);
			y = viddef.height + atoi(token);
			continue;
		}

		if (!strcmp(token, "yv")) {
			token = COM_Parse (&s);
			y = viddef.height/2 - 120 + atoi(token);
			continue;
		}

		if (!strcmp(token, "pic")) {
			/* draw a pic from a stat number */
			token = COM_Parse (&s);
			value = cl.frame.playerstate.stats[atoi(token)];
			index = atoi(token);

			if (index < 0 || index >= sizeof(cl.frame.playerstate.stats))
				Com_Error (ERR_DROP, "bad stats index %d (0x%x)", index, index);

			value = cl.frame.playerstate.stats[index];

			if (value >= MAX_IMAGES)
				Com_Error (ERR_DROP, "Pic >= MAX_IMAGES");

			if (cl.configstrings[CS_IMAGES+value]) {
				SCR_AddDirtyPoint (x, y);
				SCR_AddDirtyPoint (x+23, y+23);
				re.DrawPic (x, y, cl.configstrings[CS_IMAGES+value]);
			}

			continue;
		}

		if (!strcmp(token, "client")) {
			/* draw a deathmatch client block */
			int		score, ping, time;

			token = COM_Parse (&s);
			x = viddef.width/2 - 160 + atoi(token);
			token = COM_Parse (&s);
			y = viddef.height/2 - 120 + atoi(token);
			SCR_AddDirtyPoint (x, y);
			SCR_AddDirtyPoint (x+159, y+31);

			token = COM_Parse (&s);
			value = atoi(token);

			if (value >= MAX_CLIENTS || value < 0)
				Com_Error (ERR_DROP, "client >= MAX_CLIENTS");

			ci = &cl.clientinfo[value];

			token = COM_Parse (&s);
			score = atoi(token);

			token = COM_Parse (&s);
			ping = atoi(token);

			token = COM_Parse (&s);
			time = atoi(token);

			DrawAltString (x+32, y, ci->name);
			DrawString (x+32, y+8,  "Score: ");
			DrawAltString (x+32+7*8, y+8,  va("%i", score));
			DrawString (x+32, y+16, va("Ping:  %i", ping));
			DrawString (x+32, y+24, va("Time:  %i", time));

			if (!ci->icon)
				ci = &cl.baseclientinfo;

			re.DrawPic (x, y, ci->iconname);
			continue;
		}

		if (!strcmp(token, "ctf")) {
			/* draw a ctf client block */
			int		score, ping;
			char	block[80];

			token = COM_Parse (&s);
			x = viddef.width/2 - 160 + atoi(token);
			token = COM_Parse (&s);
			y = viddef.height/2 - 120 + atoi(token);
			SCR_AddDirtyPoint (x, y);
			SCR_AddDirtyPoint (x+159, y+31);

			token = COM_Parse (&s);
			value = atoi(token);

			if (value >= MAX_CLIENTS || value < 0)
				Com_Error (ERR_DROP, "client >= MAX_CLIENTS");

			ci = &cl.clientinfo[value];

			token = COM_Parse (&s);
			score = atoi(token);

			token = COM_Parse (&s);
			ping = atoi(token);

			if (ping > 999)
				ping = 999;

			sprintf(block, "%3d %3d %-12.12s", score, ping, ci->name);

			if (value == cl.playernum)
				DrawAltString (x, y, block);

			else
				DrawString (x, y, block);

			continue;
		}

		if (!strcmp(token, "picn")) {
			/* draw a pic from a name */
			token = COM_Parse (&s);
			SCR_AddDirtyPoint (x, y);
			SCR_AddDirtyPoint (x+23, y+23);
			re.DrawPic (x, y, (char *)token);
			continue;
		}

		if (!strcmp(token, "num")) {
			/* draw a number */
			token = COM_Parse (&s);
			width = atoi(token);
			token = COM_Parse (&s);
			value = cl.frame.playerstate.stats[atoi(token)];
			SCR_DrawField (x, y, 0, width, value);
			continue;
		}

		if (!strcmp(token, "hnum")) {
			/* health number */
			int		color;

			width = 3;
			value = cl.frame.playerstate.stats[STAT_HEALTH];

			if (value > 25)
				color = 0;	/* green */

			else if (value > 0)
				color = (cl.frame.serverframe>>2) & 1;		/* flash */

			else
				color = 1;

			if (cl.frame.playerstate.stats[STAT_FLASHES] & 1)
				re.DrawPic (x, y, "field_3");

			SCR_DrawField (x, y, color, width, value);
			continue;
		}

		if (!strcmp(token, "anum")) {
			/* ammo number */
			int		color;

			width = 3;
			value = cl.frame.playerstate.stats[STAT_AMMO];

			if (value > 5)
				color = 0; /* green */

			else if (value >= 0)
				color = (cl.frame.serverframe>>2) & 1; /* flash */

			else
				continue; /* negative number = don't show */

			if (cl.frame.playerstate.stats[STAT_FLASHES] & 4)
				re.DrawPic (x, y, "field_3");

			SCR_DrawField (x, y, color, width, value);
			continue;
		}

		if (!strcmp(token, "rnum")) {
			/* armor number */
			int		color;

			width = 3;
			value = cl.frame.playerstate.stats[STAT_ARMOR];

			if (value < 1)
				continue;

			color = 0; /* green */

			if (cl.frame.playerstate.stats[STAT_FLASHES] & 2)
				re.DrawPic (x, y, "field_3");

			SCR_DrawField (x, y, color, width, value);
			continue;
		}

		if (!strcmp(token, "stat_string")) {
			token = COM_Parse (&s);
			index = atoi(token);

			if (index < 0 || index >= MAX_CONFIGSTRINGS)
				Com_Error (ERR_DROP, "Bad stat_string index");

			index = cl.frame.playerstate.stats[index];

			if (index < 0 || index >= MAX_CONFIGSTRINGS)
				Com_Error (ERR_DROP, "Bad stat_string index");

			DrawString (x, y, cl.configstrings[index]);
			continue;
		}

		if (!strcmp(token, "cstring")) {
			token = COM_Parse (&s);
			DrawHUDString (token, x, y, 320, 0);
			continue;
		}

		if (!strcmp(token, "string")) {
			token = COM_Parse (&s);
			DrawString (x, y, token);
			continue;
		}

		if (!strcmp(token, "cstring2")) {
			token = COM_Parse (&s);
			DrawHUDString (token, x, y, 320,0x80);
			continue;
		}

		if (!strcmp(token, "string2")) {
			token = COM_Parse (&s);
			DrawAltString (x, y, token);
			continue;
		}

		if (!strcmp(token, "if")) {
			/* draw a number */
			token = COM_Parse (&s);
			value = cl.frame.playerstate.stats[atoi(token)];

			if (!value) {
				/* skip to endif */
				while (s && strcmp(token, "endif") ) {
					token = COM_Parse (&s);
				}
			}

			continue;
		}
	}
}

/*
 * The status bar is a small layout program that
 * is based on the stats array
 */
void SCR_DrawStats (void) {
	SCR_ExecuteLayoutString (cl.configstrings[CS_STATUSBAR]);
}

#define	STAT_LAYOUTS		13

void SCR_DrawLayout (void) {
	if (!cl.frame.playerstate.stats[STAT_LAYOUTS])
		return;

	SCR_ExecuteLayoutString (cl.layout);
}

/*
 * This is called every frame, and can also be called explicitly to flush
 * text to the screen.
 */
void SCR_UpdateScreen (void) {
	int numframes;
	int i;
	float separation[2] = { 0, 0 };

	/* if the screen is disabled (loading plaque is up, or vid mode changing)
	   do nothing at all */
	if (cls.disable_screen) {
		if (Sys_Milliseconds() - cls.disable_screen > 120000) {
			cls.disable_screen = 0;
			Com_Printf ("Loading plaque timed out.\n");
		}

		return;
	}

	if (!scr_initialized || !con.initialized)
		return; /* not initialized yet */

	separation[0] = 0;
	separation[1] = 0;
	numframes = 1;

	for ( i = 0; i < numframes; i++ ) {
		re.BeginFrame( separation[i] );

		if (scr_draw_loading == 2) {
			/* loading plaque over black screen */
			int		w, h;

			re.CinematicSetPalette(NULL);
			scr_draw_loading = false;
			re.DrawGetPicSize (&w, &h, "loading");
			re.DrawPic ((viddef.width-w)/2, (viddef.height-h)/2, "loading");
		}

		/* if a cinematic is supposed to be running,
		   handle menus and console specially */
		else if (cl.cinematictime > 0) {
			if (cls.key_dest == key_menu) {
				if (cl.cinematicpalette_active) {
					re.CinematicSetPalette(NULL);
					cl.cinematicpalette_active = false;
				}

				M_Draw ();

			} else if (cls.key_dest == key_console) {
				if (cl.cinematicpalette_active) {
					re.CinematicSetPalette(NULL);
					cl.cinematicpalette_active = false;
				}

				SCR_DrawConsole ();

			} else {
				SCR_DrawCinematic();
			}

		} else {

			/* make sure the game palette is active */
			if (cl.cinematicpalette_active) {
				re.CinematicSetPalette(NULL);
				cl.cinematicpalette_active = false;
			}

			/* do 3D refresh drawing, and then update the screen */
			SCR_CalcVrect ();

			/* clear any dirty part of the background */
			SCR_TileClear ();

			V_RenderView ( separation[i] );

			SCR_DrawStats ();

			if (cl.frame.playerstate.stats[STAT_LAYOUTS] & 1)
				SCR_DrawLayout ();

			if (cl.frame.playerstate.stats[STAT_LAYOUTS] & 2)
				CL_DrawInventory ();

			SCR_DrawNet ();
			SCR_CheckDrawCenterString ();

			if (cl_drawfps->value) {
				char s[8];
				sprintf(s,"%3.0ffps", 1/cls.frametime);
				DrawString(viddef.width-64,0,s);
			}

			if (scr_timegraph->value)
				SCR_DebugGraph (cls.frametime*300, 0);

			if (scr_debuggraph->value || scr_timegraph->value || scr_netgraph->value)
				SCR_DrawDebugGraph ();

			SCR_DrawPause ();

			SCR_DrawConsole ();

			M_Draw ();

			SCR_DrawLoading ();
		}
	}
	re.EndFrame();
}

void SCR_DrawCrosshair (void) {
	if (!crosshair->value)
		return;

	if (crosshair->modified) {
		crosshair->modified = false;
		SCR_TouchPics ();
	}

	if (crosshair_scale->modified) {
		crosshair_scale->modified=false;

		if (crosshair_scale->value>5)
			Cvar_SetValue("crosshair_scale", 5);

		else if (crosshair_scale->value<0.25)
			Cvar_SetValue("crosshair_scale", 0.25);
	}

	if (!crosshair_pic[0])
		return;

	re.DrawPic (scr_vrect.x + ((scr_vrect.width - crosshair_width)>>1)
	            , scr_vrect.y + ((scr_vrect.height - crosshair_height)>>1), crosshair_pic);
}