Quake!

This ports id Software's Quake to run on the SDL plugin runtime. The
source code originated from id under the GPLv2 license. I used
https://github.com/ahefner/sdlquake as the base of my port.

Performance is, unsurprisingly, not on par with what you're probably
used to on PC. I average about 10FPS on ipod6g, but it's still
playable.

Sound works well enough, but in-game music is not supported. I've
written ARM assembly routines for the inner sound loop. Make sure you
turn the "brightness" all the way down, or colors will look funky.

To run, extract Quake's data files to /.rockbox/quake. Have fun!

Change-Id: I4285036e967d7f0722802d43cf2096c808ca5799

1 files changed, 994 insertions, 0 deletions

diff --git a/apps/plugins/sdl/progs/quake/screen.c b/apps/plugins/sdl/progs/quake/screen.c
new file mode 100644
index 0000000000..8c623c9cad
--- /dev/null
+++ b/apps/plugins/sdl/progs/quake/screen.c
@@ -0,0 +1,994 @@
+/*
+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"
+#include "r_local.h"
+
+// 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"};
+
+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;
+
+viddef_t        vid;                            // global video state
+
+vrect_t         *pconupdate;
+vrect_t         scr_vrect;
+
+qboolean        scr_disabled_for_loading;
+qboolean        scr_drawloading;
+float           scr_disabled_time;
+qboolean        scr_skipupdate;
+
+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_EraseCenterString (void)
+{
+        int             y;
+
+        if (scr_erase_center++ > vid.numpages)
+        {
+                scr_erase_lines = 0;
+                return;
+        }
+
+        if (scr_center_lines <= 4)
+                y = vid.height*0.35;
+        else
+                y = 48;
+
+        scr_copytop = 1;
+        Draw_TileClear (0, y,vid.width, 8*scr_erase_lines);
+}
+
+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;
+
+        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");
+
+        r_refdef.fov_x = scr_fov.value;
+        r_refdef.fov_y = CalcFov (r_refdef.fov_x, r_refdef.vrect.width, r_refdef.vrect.height);
+
+// 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;
+
+// these calculations mirror those in R_Init() for r_refdef, but take no
+// account of water warping
+        vrect.x = 0;
+        vrect.y = 0;
+        vrect.width = vid.width;
+        vrect.height = vid.height;
+
+        R_SetVrect (&vrect, &scr_vrect, sb_lines);
+
+// guard against going from one mode to another that's less than half the
+// vertical resolution
+        if (scr_con_current > vid.height)
+                scr_con_current = vid.height;
+
+// notify the refresh of the change
+        R_ViewChanged (&vrect, sb_lines, vid.aspect);
+}
+
+
+/*
+=================
+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);
+
+//
+// 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)
+        {
+                scr_copytop = 1;
+                Draw_TileClear (0,(int)scr_con_current,vid.width, vid.height - (int)scr_con_current);
+                Sbar_Changed ();
+        }
+        else if (clearnotify++ < vid.numpages)
+        {
+                scr_copytop = 1;
+                Draw_TileClear (0,0,vid.width, con_notifylines);
+        }
+        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
+{
+    char        manufacturer;
+    char        version;
+    char        encoding;
+    char        bits_per_pixel;
+    unsigned short      xmin,ymin,xmax,ymax;
+    unsigned short      hres,vres;
+    unsigned char       palette[48];
+    char        reserved;
+    char        color_planes;
+    unsigned short      bytes_per_line;
+    unsigned short      palette_type;
+    char        filler[58];
+    unsigned char       data;                   // unbounded
+} pcx_t;
+
+/* 
+============== 
+WritePCXfile 
+============== 
+*/ 
+void WritePCXfile (char *filename, byte *data, int width, int height,
+        int rowbytes, byte *palette) 
+{
+        int             i, j, length;
+        pcx_t   *pcx;
+        byte            *pack;
+          
+        pcx = Hunk_TempAlloc (width*height*2+1000);
+        if (pcx == NULL)
+        {
+                Con_Printf("SCR_ScreenShot_f: not enough memory\n");
+                return;
+        } 
+ 
+        pcx->manufacturer = 0x0a;       // PCX id
+        pcx->version = 5;                       // 256 color
+        pcx->encoding = 1;              // uncompressed
+        pcx->bits_per_pixel = 8;                // 256 color
+        pcx->xmin = 0;
+        pcx->ymin = 0;
+        pcx->xmax = LittleShort((short)(width-1));
+        pcx->ymax = LittleShort((short)(height-1));
+        pcx->hres = LittleShort((short)width);
+        pcx->vres = LittleShort((short)height);
+        Q_memset (pcx->palette,0,sizeof(pcx->palette));
+        pcx->color_planes = 1;          // chunky image
+        pcx->bytes_per_line = LittleShort((short)width);
+        pcx->palette_type = LittleShort(2);             // not a grey scale
+        Q_memset (pcx->filler,0,sizeof(pcx->filler));
+
+// pack the image
+        pack = &pcx->data;
+        
+        for (i=0 ; i<height ; i++)
+        {
+                for (j=0 ; j<width ; j++)
+                {
+                        if ( (*data & 0xc0) != 0xc0)
+                                *pack++ = *data++;
+                        else
+                        {
+                                *pack++ = 0xc1;
+                                *pack++ = *data++;
+                        }
+                }
+
+                data += rowbytes - width;
+        }
+                        
+// write the palette
+        *pack++ = 0x0c; // palette ID byte
+        for (i=0 ; i<768 ; i++)
+                *pack++ = *palette++;
+                
+// write output file 
+        length = pack - (byte *)pcx;
+        COM_WriteFile (filename, pcx, length);
+} 
+ 
+
+
+/* 
+================== 
+SCR_ScreenShot_f
+================== 
+*/  
+void SCR_ScreenShot_f (void) 
+{ 
+        int     i; 
+        char            pcxname[80]; 
+        char            checkname[MAX_OSPATH];
+
+// 
+// find a file name to save it to 
+// 
+        strcpy(pcxname,"quake00.pcx");
+                
+        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;
+        }
+
+// 
+// save the pcx file 
+// 
+        D_EnableBackBufferAccess ();    // enable direct drawing of console to back
+                                                                        //  buffer
+
+        WritePCXfile (pcxname, vid.buffer, vid.width, vid.height, vid.rowbytes,
+                                  host_basepal);
+
+        D_DisableBackBufferAccess ();   // for adapters that can't stay mapped in
+                                                                        //  for linear writes all the time
+
+        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
+
+        // clear
+        key_lastpress = 0;
+        
+        do
+        {
+                key_count = -1;         // wait for a key down and up
+                Sys_SendKeyEvents ();
+        } while (key_lastpress != 'y' && key_lastpress != 'n' && key_lastpress != K_ESCAPE && key_lastpress != K_ENTER);
+
+        scr_fullupdate = 0;
+        SCR_UpdateScreen ();
+
+        return key_lastpress == K_ENTER;
+}
+
+
+//=============================================================================
+
+/*
+===============
+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);
+}
+
+
+/*
+==================
+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;
+        static float    oldlcd_x;
+        vrect_t         vrect;
+        
+        if (scr_skipupdate || block_drawing)
+                return;
+
+        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 (cls.state == ca_dedicated)
+                return;                         // stdout only
+
+        if (!scr_initialized || !con_initialized)
+                return;                         // not initialized yet
+
+        if (scr_viewsize.value != oldscr_viewsize)
+        {
+                oldscr_viewsize = scr_viewsize.value;
+                vid.recalc_refdef = 1;
+        }
+        
+//
+// check for vid changes
+//
+        if (oldfov != scr_fov.value)
+        {
+                oldfov = scr_fov.value;
+                vid.recalc_refdef = true;
+        }
+        
+        if (oldlcd_x != lcd_x.value)
+        {
+                oldlcd_x = lcd_x.value;
+                vid.recalc_refdef = true;
+        }
+        
+        if (oldscreensize != scr_viewsize.value)
+        {
+                oldscreensize = scr_viewsize.value;
+                vid.recalc_refdef = true;
+        }
+        
+        if (vid.recalc_refdef)
+        {
+        // something changed, so reorder the screen
+                SCR_CalcRefdef ();
+        }
+
+//
+// do 3D refresh drawing, and then update the screen
+//
+        D_EnableBackBufferAccess ();    // of all overlay stuff if drawing directly
+
+        if (scr_fullupdate++ < vid.numpages)
+        {       // clear the entire screen
+                scr_copyeverything = 1;
+                Draw_TileClear (0,0,vid.width,vid.height);
+                Sbar_Changed ();
+        }
+
+        pconupdate = NULL;
+
+
+        SCR_SetUpToDrawConsole ();
+        SCR_EraseCenterString ();
+
+        D_DisableBackBufferAccess ();   // for adapters that can't stay mapped in
+                                                                        //  for linear writes all the time
+
+        VID_LockBuffer ();
+
+        V_RenderView ();
+
+        VID_UnlockBuffer ();
+
+        D_EnableBackBufferAccess ();    // of all overlay stuff if drawing directly
+
+        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 (cl.intermission == 3 && key_dest == key_game)
+        {
+                SCR_CheckDrawCenterString ();
+        }
+        else
+        {
+                SCR_DrawRam ();
+                SCR_DrawNet ();
+                SCR_DrawTurtle ();
+                SCR_DrawPause ();
+                SCR_CheckDrawCenterString ();
+                Sbar_Draw ();
+                SCR_DrawConsole ();
+                M_Draw ();
+        }
+
+        D_DisableBackBufferAccess ();   // for adapters that can't stay mapped in
+                                                                        //  for linear writes all the time
+        if (pconupdate)
+        {
+                D_UpdateRects (pconupdate);
+        }
+
+        V_UpdatePalette ();
+
+//
+// update one of three areas
+//
+
+        if (scr_copyeverything)
+        {
+                vrect.x = 0;
+                vrect.y = 0;
+                vrect.width = vid.width;
+                vrect.height = vid.height;
+                vrect.pnext = 0;
+        
+                VID_Update (&vrect);
+        }
+        else if (scr_copytop)
+        {
+                vrect.x = 0;
+                vrect.y = 0;
+                vrect.width = vid.width;
+                vrect.height = vid.height - sb_lines;
+                vrect.pnext = 0;
+        
+                VID_Update (&vrect);
+        }       
+        else
+        {
+                vrect.x = scr_vrect.x;
+                vrect.y = scr_vrect.y;
+                vrect.width = scr_vrect.width;
+                vrect.height = scr_vrect.height;
+                vrect.pnext = 0;
+        
+                VID_Update (&vrect);
+        }
+}
+
+
+/*
+==================
+SCR_UpdateWholeScreen
+==================
+*/
+void SCR_UpdateWholeScreen (void)
+{
+        scr_fullupdate = 0;
+        SCR_UpdateScreen ();
+}