The Quake sources as originally release under the GPL license on December 21, 1999

1 files changed, 923 insertions, 0 deletions

diff --git a/WinQuake/gl_screen.c b/WinQuake/gl_screen.c
new file mode 100644
index 0000000..8a0c096
--- /dev/null
+++ b/WinQuake/gl_screen.c
@@ -0,0 +1,923 @@
+/*
+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.
+
+*/
+
+// screen.c -- master for refresh, status bar, console, chat, notify, etc
+
+#include "quakedef.h"
+
+/*
+
+background clear
+rendering
+turtle/net/ram icons
+sbar
+centerprint / slow centerprint
+notify lines
+intermission / finale overlay
+loading plaque
+console
+menu
+
+required background clears
+required update regions
+
+
+syncronous draw mode or async
+One off screen buffer, with updates either copied or xblited
+Need to double buffer?
+
+
+async draw will require the refresh area to be cleared, because it will be
+xblited, but sync draw can just ignore it.
+
+sync
+draw
+
+CenterPrint ()
+SlowPrint ()
+Screen_Update ();
+Con_Printf ();
+
+net 
+turn off messages option
+
+the refresh is allways rendered, unless the console is full screen
+
+
+console is:
+	notify lines
+	half
+	full
+	
+
+*/
+
+
+int			glx, gly, glwidth, glheight;
+
+// only the refresh window will be updated unless these variables are flagged 
+int			scr_copytop;
+int			scr_copyeverything;
+
+float		scr_con_current;
+float		scr_conlines;		// lines of console to display
+
+float		oldscreensize, oldfov;
+cvar_t		scr_viewsize = {"viewsize","100", true};
+cvar_t		scr_fov = {"fov","90"};	// 10 - 170
+cvar_t		scr_conspeed = {"scr_conspeed","300"};
+cvar_t		scr_centertime = {"scr_centertime","2"};
+cvar_t		scr_showram = {"showram","1"};
+cvar_t		scr_showturtle = {"showturtle","0"};
+cvar_t		scr_showpause = {"showpause","1"};
+cvar_t		scr_printspeed = {"scr_printspeed","8"};
+cvar_t		gl_triplebuffer = {"gl_triplebuffer", "1", true };
+
+extern	cvar_t	crosshair;
+
+qboolean	scr_initialized;		// ready to draw
+
+qpic_t		*scr_ram;
+qpic_t		*scr_net;
+qpic_t		*scr_turtle;
+
+int			scr_fullupdate;
+
+int			clearconsole;
+int			clearnotify;
+
+int			sb_lines;
+
+viddef_t	vid;				// global video state
+
+vrect_t		scr_vrect;
+
+qboolean	scr_disabled_for_loading;
+qboolean	scr_drawloading;
+float		scr_disabled_time;
+
+qboolean	block_drawing;
+
+void SCR_ScreenShot_f (void);
+
+/*
+===============================================================================
+
+CENTER PRINTING
+
+===============================================================================
+*/
+
+char		scr_centerstring[1024];
+float		scr_centertime_start;	// for slow victory printing
+float		scr_centertime_off;
+int			scr_center_lines;
+int			scr_erase_lines;
+int			scr_erase_center;
+
+/*
+==============
+SCR_CenterPrint
+
+Called for important messages that should stay in the center of the screen
+for a few moments
+==============
+*/
+void SCR_CenterPrint (char *str)
+{
+	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;
+	while (*str)
+	{
+		if (*str == '\n')
+			scr_center_lines++;
+		str++;
+	}
+}
+
+
+void SCR_DrawCenterString (void)
+{
+	char	*start;
+	int		l;
+	int		j;
+	int		x, y;
+	int		remaining;
+
+// the finale prints the characters one at a time
+	if (cl.intermission)
+		remaining = scr_printspeed.value * (cl.time - scr_centertime_start);
+	else
+		remaining = 9999;
+
+	scr_erase_center = 0;
+	start = scr_centerstring;
+
+	if (scr_center_lines <= 4)
+		y = vid.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 = (vid.width - l*8)/2;
+		for (j=0 ; j<l ; j++, x+=8)
+		{
+			Draw_Character (x, y, start[j]);	
+			if (!remaining--)
+				return;
+		}
+			
+		y += 8;
+
+		while (*start && *start != '\n')
+			start++;
+
+		if (!*start)
+			break;
+		start++;		// skip the \n
+	} while (1);
+}
+
+void SCR_CheckDrawCenterString (void)
+{
+	scr_copytop = 1;
+	if (scr_center_lines > scr_erase_lines)
+		scr_erase_lines = scr_center_lines;
+
+	scr_centertime_off -= host_frametime;
+	
+	if (scr_centertime_off <= 0 && !cl.intermission)
+		return;
+	if (key_dest != key_game)
+		return;
+
+	SCR_DrawCenterString ();
+}
+
+//=============================================================================
+
+/*
+====================
+CalcFov
+====================
+*/
+float CalcFov (float fov_x, float width, float height)
+{
+        float   a;
+        float   x;
+
+        if (fov_x < 1 || fov_x > 179)
+                Sys_Error ("Bad fov: %f", fov_x);
+
+        x = width/tan(fov_x/360*M_PI);
+
+        a = atan (height/x);
+
+        a = a*360/M_PI;
+
+        return a;
+}
+
+/*
+=================
+SCR_CalcRefdef
+
+Must be called whenever vid changes
+Internal use only
+=================
+*/
+static void SCR_CalcRefdef (void)
+{
+	vrect_t		vrect;
+	float		size;
+	int		h;
+	qboolean		full = false;
+
+
+	scr_fullupdate = 0;		// force a background redraw
+	vid.recalc_refdef = 0;
+
+// force the status bar to redraw
+	Sbar_Changed ();
+
+//========================================
+	
+// bound viewsize
+	if (scr_viewsize.value < 30)
+		Cvar_Set ("viewsize","30");
+	if (scr_viewsize.value > 120)
+		Cvar_Set ("viewsize","120");
+
+// bound field of view
+	if (scr_fov.value < 10)
+		Cvar_Set ("fov","10");
+	if (scr_fov.value > 170)
+		Cvar_Set ("fov","170");
+
+// intermission is always full screen	
+	if (cl.intermission)
+		size = 120;
+	else
+		size = scr_viewsize.value;
+
+	if (size >= 120)
+		sb_lines = 0;		// no status bar at all
+	else if (size >= 110)
+		sb_lines = 24;		// no inventory
+	else
+		sb_lines = 24+16+8;
+
+	if (scr_viewsize.value >= 100.0) {
+		full = true;
+		size = 100.0;
+	} else
+		size = scr_viewsize.value;
+	if (cl.intermission)
+	{
+		full = true;
+		size = 100;
+		sb_lines = 0;
+	}
+	size /= 100.0;
+
+	h = vid.height - sb_lines;
+
+	r_refdef.vrect.width = vid.width * size;
+	if (r_refdef.vrect.width < 96)
+	{
+		size = 96.0 / r_refdef.vrect.width;
+		r_refdef.vrect.width = 96;	// min for icons
+	}
+
+	r_refdef.vrect.height = vid.height * size;
+	if (r_refdef.vrect.height > vid.height - sb_lines)
+		r_refdef.vrect.height = vid.height - sb_lines;
+	if (r_refdef.vrect.height > vid.height)
+			r_refdef.vrect.height = vid.height;
+	r_refdef.vrect.x = (vid.width - r_refdef.vrect.width)/2;
+	if (full)
+		r_refdef.vrect.y = 0;
+	else 
+		r_refdef.vrect.y = (h - r_refdef.vrect.height)/2;
+
+	r_refdef.fov_x = scr_fov.value;
+	r_refdef.fov_y = CalcFov (r_refdef.fov_x, r_refdef.vrect.width, r_refdef.vrect.height);
+
+	scr_vrect = r_refdef.vrect;
+}
+
+
+/*
+=================
+SCR_SizeUp_f
+
+Keybinding command
+=================
+*/
+void SCR_SizeUp_f (void)
+{
+	Cvar_SetValue ("viewsize",scr_viewsize.value+10);
+	vid.recalc_refdef = 1;
+}
+
+
+/*
+=================
+SCR_SizeDown_f
+
+Keybinding command
+=================
+*/
+void SCR_SizeDown_f (void)
+{
+	Cvar_SetValue ("viewsize",scr_viewsize.value-10);
+	vid.recalc_refdef = 1;
+}
+
+//============================================================================
+
+/*
+==================
+SCR_Init
+==================
+*/
+void SCR_Init (void)
+{
+
+	Cvar_RegisterVariable (&scr_fov);
+	Cvar_RegisterVariable (&scr_viewsize);
+	Cvar_RegisterVariable (&scr_conspeed);
+	Cvar_RegisterVariable (&scr_showram);
+	Cvar_RegisterVariable (&scr_showturtle);
+	Cvar_RegisterVariable (&scr_showpause);
+	Cvar_RegisterVariable (&scr_centertime);
+	Cvar_RegisterVariable (&scr_printspeed);
+	Cvar_RegisterVariable (&gl_triplebuffer);
+
+//
+// register our commands
+//
+	Cmd_AddCommand ("screenshot",SCR_ScreenShot_f);
+	Cmd_AddCommand ("sizeup",SCR_SizeUp_f);
+	Cmd_AddCommand ("sizedown",SCR_SizeDown_f);
+
+	scr_ram = Draw_PicFromWad ("ram");
+	scr_net = Draw_PicFromWad ("net");
+	scr_turtle = Draw_PicFromWad ("turtle");
+
+	scr_initialized = true;
+}
+
+
+
+/*
+==============
+SCR_DrawRam
+==============
+*/
+void SCR_DrawRam (void)
+{
+	if (!scr_showram.value)
+		return;
+
+	if (!r_cache_thrash)
+		return;
+
+	Draw_Pic (scr_vrect.x+32, scr_vrect.y, scr_ram);
+}
+
+/*
+==============
+SCR_DrawTurtle
+==============
+*/
+void SCR_DrawTurtle (void)
+{
+	static int	count;
+	
+	if (!scr_showturtle.value)
+		return;
+
+	if (host_frametime < 0.1)
+	{
+		count = 0;
+		return;
+	}
+
+	count++;
+	if (count < 3)
+		return;
+
+	Draw_Pic (scr_vrect.x, scr_vrect.y, scr_turtle);
+}
+
+/*
+==============
+SCR_DrawNet
+==============
+*/
+void SCR_DrawNet (void)
+{
+	if (realtime - cl.last_received_message < 0.3)
+		return;
+	if (cls.demoplayback)
+		return;
+
+	Draw_Pic (scr_vrect.x+64, scr_vrect.y, scr_net);
+}
+
+/*
+==============
+DrawPause
+==============
+*/
+void SCR_DrawPause (void)
+{
+	qpic_t	*pic;
+
+	if (!scr_showpause.value)		// turn off for screenshots
+		return;
+
+	if (!cl.paused)
+		return;
+
+	pic = Draw_CachePic ("gfx/pause.lmp");
+	Draw_Pic ( (vid.width - pic->width)/2, 
+		(vid.height - 48 - pic->height)/2, pic);
+}
+
+
+
+/*
+==============
+SCR_DrawLoading
+==============
+*/
+void SCR_DrawLoading (void)
+{
+	qpic_t	*pic;
+
+	if (!scr_drawloading)
+		return;
+		
+	pic = Draw_CachePic ("gfx/loading.lmp");
+	Draw_Pic ( (vid.width - pic->width)/2, 
+		(vid.height - 48 - pic->height)/2, pic);
+}
+
+
+
+//=============================================================================
+
+
+/*
+==================
+SCR_SetUpToDrawConsole
+==================
+*/
+void SCR_SetUpToDrawConsole (void)
+{
+	Con_CheckResize ();
+	
+	if (scr_drawloading)
+		return;		// never a console with loading plaque
+		
+// decide on the height of the console
+	con_forcedup = !cl.worldmodel || cls.signon != SIGNONS;
+
+	if (con_forcedup)
+	{
+		scr_conlines = vid.height;		// full screen
+		scr_con_current = scr_conlines;
+	}
+	else if (key_dest == key_console)
+		scr_conlines = vid.height/2;	// half screen
+	else
+		scr_conlines = 0;				// none visible
+	
+	if (scr_conlines < scr_con_current)
+	{
+		scr_con_current -= scr_conspeed.value*host_frametime;
+		if (scr_conlines > scr_con_current)
+			scr_con_current = scr_conlines;
+
+	}
+	else if (scr_conlines > scr_con_current)
+	{
+		scr_con_current += scr_conspeed.value*host_frametime;
+		if (scr_conlines < scr_con_current)
+			scr_con_current = scr_conlines;
+	}
+
+	if (clearconsole++ < vid.numpages)
+	{
+		Sbar_Changed ();
+	}
+	else if (clearnotify++ < vid.numpages)
+	{
+	}
+	else
+		con_notifylines = 0;
+}
+	
+/*
+==================
+SCR_DrawConsole
+==================
+*/
+void SCR_DrawConsole (void)
+{
+	if (scr_con_current)
+	{
+		scr_copyeverything = 1;
+		Con_DrawConsole (scr_con_current, true);
+		clearconsole = 0;
+	}
+	else
+	{
+		if (key_dest == key_game || key_dest == key_message)
+			Con_DrawNotify ();	// only draw notify in game
+	}
+}
+
+
+/* 
+============================================================================== 
+ 
+						SCREEN SHOTS 
+ 
+============================================================================== 
+*/ 
+
+typedef struct _TargaHeader {
+	unsigned char 	id_length, colormap_type, image_type;
+	unsigned short	colormap_index, colormap_length;
+	unsigned char	colormap_size;
+	unsigned short	x_origin, y_origin, width, height;
+	unsigned char	pixel_size, attributes;
+} TargaHeader;
+
+
+/* 
+================== 
+SCR_ScreenShot_f
+================== 
+*/  
+void SCR_ScreenShot_f (void) 
+{
+	byte		*buffer;
+	char		pcxname[80]; 
+	char		checkname[MAX_OSPATH];
+	int			i, c, temp;
+// 
+// find a file name to save it to 
+// 
+	strcpy(pcxname,"quake00.tga");
+		
+	for (i=0 ; i<=99 ; i++) 
+	{ 
+		pcxname[5] = i/10 + '0'; 
+		pcxname[6] = i%10 + '0'; 
+		sprintf (checkname, "%s/%s", com_gamedir, pcxname);
+		if (Sys_FileTime(checkname) == -1)
+			break;	// file doesn't exist
+	} 
+	if (i==100) 
+	{
+		Con_Printf ("SCR_ScreenShot_f: Couldn't create a PCX file\n"); 
+		return;
+ 	}
+
+
+	buffer = malloc(glwidth*glheight*3 + 18);
+	memset (buffer, 0, 18);
+	buffer[2] = 2;		// uncompressed type
+	buffer[12] = glwidth&255;
+	buffer[13] = glwidth>>8;
+	buffer[14] = glheight&255;
+	buffer[15] = glheight>>8;
+	buffer[16] = 24;	// pixel size
+
+	glReadPixels (glx, gly, glwidth, glheight, GL_RGB, GL_UNSIGNED_BYTE, buffer+18 ); 
+
+	// swap rgb to bgr
+	c = 18+glwidth*glheight*3;
+	for (i=18 ; i<c ; i+=3)
+	{
+		temp = buffer[i];
+		buffer[i] = buffer[i+2];
+		buffer[i+2] = temp;
+	}
+	COM_WriteFile (pcxname, buffer, glwidth*glheight*3 + 18 );
+
+	free (buffer);
+	Con_Printf ("Wrote %s\n", pcxname);
+} 
+
+
+//=============================================================================
+
+
+/*
+===============
+SCR_BeginLoadingPlaque
+
+================
+*/
+void SCR_BeginLoadingPlaque (void)
+{
+	S_StopAllSounds (true);
+
+	if (cls.state != ca_connected)
+		return;
+	if (cls.signon != SIGNONS)
+		return;
+	
+// redraw with no console and the loading plaque
+	Con_ClearNotify ();
+	scr_centertime_off = 0;
+	scr_con_current = 0;
+
+	scr_drawloading = true;
+	scr_fullupdate = 0;
+	Sbar_Changed ();
+	SCR_UpdateScreen ();
+	scr_drawloading = false;
+
+	scr_disabled_for_loading = true;
+	scr_disabled_time = realtime;
+	scr_fullupdate = 0;
+}
+
+/*
+===============
+SCR_EndLoadingPlaque
+
+================
+*/
+void SCR_EndLoadingPlaque (void)
+{
+	scr_disabled_for_loading = false;
+	scr_fullupdate = 0;
+	Con_ClearNotify ();
+}
+
+//=============================================================================
+
+char	*scr_notifystring;
+qboolean	scr_drawdialog;
+
+void SCR_DrawNotifyString (void)
+{
+	char	*start;
+	int		l;
+	int		j;
+	int		x, y;
+
+	start = scr_notifystring;
+
+	y = vid.height*0.35;
+
+	do	
+	{
+	// scan the width of the line
+		for (l=0 ; l<40 ; l++)
+			if (start[l] == '\n' || !start[l])
+				break;
+		x = (vid.width - l*8)/2;
+		for (j=0 ; j<l ; j++, x+=8)
+			Draw_Character (x, y, start[j]);	
+			
+		y += 8;
+
+		while (*start && *start != '\n')
+			start++;
+
+		if (!*start)
+			break;
+		start++;		// skip the \n
+	} while (1);
+}
+
+/*
+==================
+SCR_ModalMessage
+
+Displays a text string in the center of the screen and waits for a Y or N
+keypress.  
+==================
+*/
+int SCR_ModalMessage (char *text)
+{
+	if (cls.state == ca_dedicated)
+		return true;
+
+	scr_notifystring = text;
+ 
+// draw a fresh screen
+	scr_fullupdate = 0;
+	scr_drawdialog = true;
+	SCR_UpdateScreen ();
+	scr_drawdialog = false;
+	
+	S_ClearBuffer ();		// so dma doesn't loop current sound
+
+	do
+	{
+		key_count = -1;		// wait for a key down and up
+		Sys_SendKeyEvents ();
+	} while (key_lastpress != 'y' && key_lastpress != 'n' && key_lastpress != K_ESCAPE);
+
+	scr_fullupdate = 0;
+	SCR_UpdateScreen ();
+
+	return key_lastpress == 'y';
+}
+
+
+//=============================================================================
+
+/*
+===============
+SCR_BringDownConsole
+
+Brings the console down and fades the palettes back to normal
+================
+*/
+void SCR_BringDownConsole (void)
+{
+	int		i;
+	
+	scr_centertime_off = 0;
+	
+	for (i=0 ; i<20 && scr_conlines != scr_con_current ; i++)
+		SCR_UpdateScreen ();
+
+	cl.cshifts[0].percent = 0;		// no area contents palette on next frame
+	VID_SetPalette (host_basepal);
+}
+
+void SCR_TileClear (void)
+{
+	if (r_refdef.vrect.x > 0) {
+		// left
+		Draw_TileClear (0, 0, r_refdef.vrect.x, vid.height - sb_lines);
+		// right
+		Draw_TileClear (r_refdef.vrect.x + r_refdef.vrect.width, 0, 
+			vid.width - r_refdef.vrect.x + r_refdef.vrect.width, 
+			vid.height - sb_lines);
+	}
+	if (r_refdef.vrect.y > 0) {
+		// top
+		Draw_TileClear (r_refdef.vrect.x, 0, 
+			r_refdef.vrect.x + r_refdef.vrect.width, 
+			r_refdef.vrect.y);
+		// bottom
+		Draw_TileClear (r_refdef.vrect.x,
+			r_refdef.vrect.y + r_refdef.vrect.height, 
+			r_refdef.vrect.width, 
+			vid.height - sb_lines - 
+			(r_refdef.vrect.height + r_refdef.vrect.y));
+	}
+}
+
+/*
+==================
+SCR_UpdateScreen
+
+This is called every frame, and can also be called explicitly to flush
+text to the screen.
+
+WARNING: be very careful calling this from elsewhere, because the refresh
+needs almost the entire 256k of stack space!
+==================
+*/
+void SCR_UpdateScreen (void)
+{
+	static float	oldscr_viewsize;
+	vrect_t		vrect;
+
+	if (block_drawing)
+		return;
+
+	vid.numpages = 2 + gl_triplebuffer.value;
+
+	scr_copytop = 0;
+	scr_copyeverything = 0;
+
+	if (scr_disabled_for_loading)
+	{
+		if (realtime - scr_disabled_time > 60)
+		{
+			scr_disabled_for_loading = false;
+			Con_Printf ("load failed.\n");
+		}
+		else
+			return;
+	}
+
+	if (!scr_initialized || !con_initialized)
+		return;				// not initialized yet
+
+
+	GL_BeginRendering (&glx, &gly, &glwidth, &glheight);
+	
+	//
+	// determine size of refresh window
+	//
+	if (oldfov != scr_fov.value)
+	{
+		oldfov = scr_fov.value;
+		vid.recalc_refdef = true;
+	}
+
+	if (oldscreensize != scr_viewsize.value)
+	{
+		oldscreensize = scr_viewsize.value;
+		vid.recalc_refdef = true;
+	}
+
+	if (vid.recalc_refdef)
+		SCR_CalcRefdef ();
+
+//
+// do 3D refresh drawing, and then update the screen
+//
+	SCR_SetUpToDrawConsole ();
+	
+	V_RenderView ();
+
+	GL_Set2D ();
+
+	//
+	// draw any areas not covered by the refresh
+	//
+	SCR_TileClear ();
+
+	if (scr_drawdialog)
+	{
+		Sbar_Draw ();
+		Draw_FadeScreen ();
+		SCR_DrawNotifyString ();
+		scr_copyeverything = true;
+	}
+	else if (scr_drawloading)
+	{
+		SCR_DrawLoading ();
+		Sbar_Draw ();
+	}
+	else if (cl.intermission == 1 && key_dest == key_game)
+	{
+		Sbar_IntermissionOverlay ();
+	}
+	else if (cl.intermission == 2 && key_dest == key_game)
+	{
+		Sbar_FinaleOverlay ();
+		SCR_CheckDrawCenterString ();
+	}
+	else
+	{
+		if (crosshair.value)
+			Draw_Character (scr_vrect.x + scr_vrect.width/2, scr_vrect.y + scr_vrect.height/2, '+');
+		
+		SCR_DrawRam ();
+		SCR_DrawNet ();
+		SCR_DrawTurtle ();
+		SCR_DrawPause ();
+		SCR_CheckDrawCenterString ();
+		Sbar_Draw ();
+		SCR_DrawConsole ();	
+		M_Draw ();
+	}
+
+	V_UpdatePalette ();
+
+	GL_EndRendering ();
+}
+