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d_main.c
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d_main.c
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//
// Copyright (C) 1993-1996 Id Software, Inc.
// Copyright (C) 2016-2017 Alexey Khokholov (Nuke.YKT)
//
// 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.
//
// DESCRIPTION:
// DOOM main program (D_DoomMain) and game loop (D_DoomLoop),
// plus functions to determine game mode (shareware, registered),
// parse command line parameters, configure game parameters (turbo),
// and call the startup functions.
//
#include <stdlib.h>
#include <dos.h>
//#include <graph.h>
#include <direct.h>
#include <io.h>
#include "doomdef.h"
#include "doomstat.h"
#include "dstrings.h"
#include "sounds.h"
#include "z_zone.h"
#include "w_wad.h"
#include "s_sound.h"
#include "v_video.h"
#include "f_finale.h"
#include "f_wipe.h"
#include "m_misc.h"
#include "m_menu.h"
#include "i_system.h"
#include "i_sound.h"
#include "g_game.h"
#include "hu_stuff.h"
#include "wi_stuff.h"
#include "st_stuff.h"
#include "am_map.h"
#include "p_setup.h"
#include "r_local.h"
#include "d_main.h"
#if (EXE_VERSION >= EXE_VERSION_ULTIMATE)
#define BGCOLOR 7
#define FGCOLOR 8
#else
#define BGCOLOR 7
#define FGCOLOR 4
#endif
//
// D-DoomLoop()
// Not a globally visible function,
// just included for source reference,
// called by D_DoomMain, never exits.
// Manages timing and IO,
// calls all ?_Responder, ?_Ticker, and ?_Drawer,
// calls I_GetTime, I_StartFrame, and I_StartTic
//
void D_DoomLoop (void);
char* wadfiles[MAXWADFILES];
boolean devparm; // started game with -devparm
boolean nomonsters; // checkparm of -nomonsters
boolean respawnparm; // checkparm of -respawn
boolean fastparm; // checkparm of -fast
boolean drone;
boolean singletics = false; // debug flag to cancel adaptiveness
//extern int soundVolume;
extern int sfxVolume;
extern int musicVolume;
extern boolean inhelpscreens;
skill_t startskill;
int startepisode;
int startmap;
boolean autostart;
FILE* debugfile;
boolean advancedemo;
boolean modifiedgame;
boolean shareware;
boolean registered;
boolean commercial;
#if (EXE_VERSION >= EXE_VERSION_FINAL)
boolean plutonia;
boolean tnt;
#endif
boolean french;
char wadfile[1024]; // primary wad file
char mapdir[1024]; // directory of development maps
char basedefault[1024]; // default file
void D_CheckNetGame (void);
void D_ProcessEvents (void);
void G_BuildTiccmd (ticcmd_t* cmd);
void D_DoAdvanceDemo (void);
//
// EVENT HANDLING
//
// Events are asynchronous inputs generally generated by the game user.
// Events can be discarded if no responder claims them
//
event_t events[MAXEVENTS];
int eventhead;
int eventtail;
//
// D_PostEvent
// Called by the I/O functions when input is detected
//
void D_PostEvent (event_t* ev)
{
events[eventhead] = *ev;
eventhead = (++eventhead)&(MAXEVENTS-1);
}
//
// D_ProcessEvents
// Send all the events of the given timestamp down the responder chain
//
void D_ProcessEvents (void)
{
event_t* ev;
// IF STORE DEMO, DO NOT ACCEPT INPUT
if ( ( commercial )
&& (W_CheckNumForName("map01")<0) )
return;
for ( ; eventtail != eventhead ; eventtail = (++eventtail)&(MAXEVENTS-1) )
{
ev = &events[eventtail];
if (M_Responder (ev))
continue; // menu ate the event
G_Responder (ev);
}
}
//
// FixedDiv, C version.
//
fixed_t
FixedDiv
( fixed_t a,
fixed_t b )
{
if ( (abs(a)>>14) >= abs(b))
return (a^b)<0 ? MININT : MAXINT;
return FixedDiv2 (a,b);
}
//
// D_Display
// draw current display, possibly wiping it from the previous
//
// wipegamestate can be set to -1 to force a wipe on the next draw
gamestate_t wipegamestate = GS_DEMOSCREEN;
extern boolean setsizeneeded;
extern int showMessages;
void R_ExecuteSetViewSize (void);
void D_Display (void)
{
static boolean viewactivestate = false;
static boolean menuactivestate = false;
static boolean inhelpscreensstate = false;
static boolean fullscreen = false;
static gamestate_t oldgamestate = -1;
static int borderdrawcount;
int nowtime;
int tics;
int wipestart;
int y;
boolean done;
boolean wipe;
boolean redrawsbar;
if (nodrawers)
return; // for comparative timing / profiling
redrawsbar = false;
// change the view size if needed
if (setsizeneeded)
{
R_ExecuteSetViewSize ();
oldgamestate = -1; // force background redraw
borderdrawcount = 3;
}
// save the current screen if about to wipe
if (gamestate != wipegamestate)
{
wipe = true;
wipe_StartScreen(0, 0, SCREENWIDTH, SCREENHEIGHT);
}
else
wipe = false;
if (gamestate == GS_LEVEL && gametic)
HU_Erase();
// do buffered drawing
switch (gamestate)
{
case GS_LEVEL:
if (!gametic)
break;
if (automapactive)
AM_Drawer ();
if (wipe || (viewheight != 200 && fullscreen) )
redrawsbar = true;
if (inhelpscreensstate && !inhelpscreens)
redrawsbar = true; // just put away the help screen
ST_Drawer (viewheight == 200, redrawsbar );
fullscreen = viewheight == 200;
break;
case GS_INTERMISSION:
WI_Drawer ();
break;
case GS_FINALE:
F_Drawer ();
break;
case GS_DEMOSCREEN:
D_PageDrawer ();
break;
}
// draw buffered stuff to screen
I_UpdateNoBlit ();
// draw the view directly
if (gamestate == GS_LEVEL && !automapactive && gametic)
R_RenderPlayerView (&players[displayplayer]);
if (gamestate == GS_LEVEL && gametic)
HU_Drawer ();
// clean up border stuff
if (gamestate != oldgamestate && gamestate != GS_LEVEL)
I_SetPalette (W_CacheLumpName ("PLAYPAL",PU_CACHE));
// see if the border needs to be initially drawn
if (gamestate == GS_LEVEL && oldgamestate != GS_LEVEL)
{
viewactivestate = false; // view was not active
R_FillBackScreen (); // draw the pattern into the back screen
}
// see if the border needs to be updated to the screen
if (gamestate == GS_LEVEL && !automapactive && scaledviewwidth != 320)
{
if (menuactive || menuactivestate || !viewactivestate)
borderdrawcount = 3;
if (borderdrawcount)
{
R_DrawViewBorder (); // erase old menu stuff
borderdrawcount--;
}
}
menuactivestate = menuactive;
viewactivestate = viewactive;
inhelpscreensstate = inhelpscreens;
oldgamestate = wipegamestate = gamestate;
// draw pause pic
if (paused)
{
if (automapactive)
y = 4;
else
y = viewwindowy+4;
V_DrawPatchDirect(viewwindowx+(scaledviewwidth-68)/2,
y,0,W_CacheLumpName ("M_PAUSE", PU_CACHE));
}
// menus go directly to the screen
M_Drawer (); // menu is drawn even on top of everything
NetUpdate (); // send out any new accumulation
// normal update
if (!wipe)
{
I_FinishUpdate (); // page flip or blit buffer
return;
}
// wipe update
wipe_EndScreen(0, 0, SCREENWIDTH, SCREENHEIGHT);
wipestart = I_GetTime () - 1;
do
{
do
{
nowtime = I_GetTime ();
tics = nowtime - wipestart;
} while (!tics);
wipestart = nowtime;
done = wipe_ScreenWipe(wipe_Melt
, 0, 0, SCREENWIDTH, SCREENHEIGHT, tics);
I_UpdateNoBlit ();
M_Drawer (); // menu is drawn even on top of wipes
I_FinishUpdate (); // page flip or blit buffer
} while (!done);
}
//
// D_DoomLoop
//
extern boolean demorecording;
void D_DoomLoop (void)
{
if (demorecording)
G_BeginRecording ();
if (M_CheckParm ("-debugfile"))
{
char filename[20];
sprintf (filename,"debug%i.txt",consoleplayer);
printf ("debug output to: %s\n",filename);
debugfile = fopen (filename,"w");
}
I_InitGraphics ();
while (1)
{
// frame syncronous IO operations
I_StartFrame ();
// process one or more tics
if (singletics)
{
I_StartTic ();
D_ProcessEvents ();
G_BuildTiccmd (&netcmds[consoleplayer][maketic%BACKUPTICS]);
if (advancedemo)
D_DoAdvanceDemo ();
M_Ticker ();
G_Ticker ();
gametic++;
maketic++;
}
else
{
TryRunTics (); // will run at least one tic
}
S_UpdateSounds (players[consoleplayer].mo);// move positional sounds
// Update display, next frame, with current state.
D_Display ();
}
}
//
// DEMO LOOP
//
int demosequence;
int pagetic;
char *pagename;
//
// D_PageTicker
// Handles timing for warped projection
//
void D_PageTicker (void)
{
if (--pagetic < 0)
D_AdvanceDemo ();
}
//
// D_PageDrawer
//
void D_PageDrawer (void)
{
V_DrawPatch (0,0, 0, W_CacheLumpName(pagename, PU_CACHE));
}
//
// D_AdvanceDemo
// Called after each demo or intro demosequence finishes
//
void D_AdvanceDemo (void)
{
advancedemo = true;
}
//
// This cycles through the demo sequences.
// FIXME - version dependend demo numbers?
//
void D_DoAdvanceDemo (void)
{
players[consoleplayer].playerstate = PST_LIVE; // not reborn
advancedemo = false;
usergame = false; // no save / end game here
paused = false;
gameaction = ga_nothing;
#if (EXE_VERSION == EXE_VERSION_ULTIMATE) || (EXE_VERSION == EXE_VERSION_FINAL)
demosequence = (demosequence+1)%7;
#else
demosequence = (demosequence+1)%6;
#endif
switch (demosequence)
{
case 0:
if ( commercial )
pagetic = 35 * 11;
else
pagetic = 170;
gamestate = GS_DEMOSCREEN;
pagename = "TITLEPIC";
if ( commercial )
S_StartMusic(mus_dm2ttl);
else
S_StartMusic (mus_intro);
break;
case 1:
G_DeferedPlayDemo ("demo1");
break;
case 2:
pagetic = 200;
gamestate = GS_DEMOSCREEN;
pagename = "CREDIT";
break;
case 3:
G_DeferedPlayDemo ("demo2");
break;
case 4:
gamestate = GS_DEMOSCREEN;
if ( commercial)
{
pagetic = 35 * 11;
pagename = "TITLEPIC";
S_StartMusic(mus_dm2ttl);
}
else
{
pagetic = 200;
#if (EXE_VERSION >= EXE_VERSION_ULTIMATE)
pagename = "CREDIT";
#else
pagename = "HELP2";
#endif
}
break;
case 5:
G_DeferedPlayDemo ("demo3");
break;
#if (EXE_VERSION >= EXE_VERSION_ULTIMATE)
// THE DEFINITIVE DOOM Special Edition demo
case 6:
G_DeferedPlayDemo ("demo4");
break;
#endif
}
}
//
// D_StartTitle
//
void D_StartTitle (void)
{
gameaction = ga_nothing;
demosequence = -1;
D_AdvanceDemo ();
}
//
// D_GetCursorColumn
//
int D_GetCursorColumn(void)
{
union REGS regs;
regs.h.ah = 3;
regs.h.bh = 0;
int386(0x10, ®s, ®s);
return regs.h.dl;
}
//
// D_GetCursorRow
//
int D_GetCursorRow(void)
{
union REGS regs;
regs.h.ah = 3;
regs.h.bh = 0;
int386(0x10, ®s, ®s);
return regs.h.dh;
}
//
// D_SetCursorPosition
//
void D_SetCursorPosition(int column, int row)
{
union REGS regs;
regs.h.dh = row;
regs.h.dl = column;
regs.h.ah = 2;
regs.h.bh = 0;
int386(0x10, ®s, ®s);
}
//
// D_DrawTitle
//
void D_DrawTitle(char *string, int fc, int bc)
{
union REGS regs;
byte color;
int column;
int row;
int i;
//Calculate text color
color = (bc << 4) | fc;
//Get column position
column = D_GetCursorColumn();
//Get row position
row = D_GetCursorRow();
for (i = 0; i < strlen(string); i++)
{
//Set character
regs.h.ah = 9;
regs.h.al = string[i];
regs.w.cx = 1;
regs.h.bl = color;
regs.h.bh = 0;
int386(0x10, ®s, ®s);
//Check cursor position
if (++column > 79)
column = 0;
//Set position
D_SetCursorPosition(column, row);
}
}
// print title for every printed line
char title[128];
//
// D_RedrawTitle
//
void D_RedrawTitle(void)
{
int column;
int row;
//Get current cursor pos
column = D_GetCursorColumn();
row = D_GetCursorRow();
//Set cursor pos to zero
D_SetCursorPosition(0, 0);
//Draw title
D_DrawTitle(title, FGCOLOR, BGCOLOR);
//Restore old cursor pos
D_SetCursorPosition(column, row);
}
//
// D_AddFile
//
void D_AddFile (char *file)
{
int numwadfiles;
char *newfile;
for (numwadfiles = 0 ; wadfiles[numwadfiles] ; numwadfiles++)
;
newfile = malloc (strlen(file)+1);
strcpy (newfile, file);
wadfiles[numwadfiles] = newfile;
}
//
// IdentifyVersion
// Checks availability of IWAD files by name,
// to determine whether registered/commercial features
// should be executed (notably loading PWAD's).
//
void IdentifyVersion (void)
{
strcpy(basedefault,"default.cfg");
if (M_CheckParm ("-shdev"))
{
registered = false;
shareware = true;
devparm = true;
D_AddFile (DEVDATA"doom1.wad");
D_AddFile (DEVMAPS"data_se/texture1.lmp");
D_AddFile (DEVMAPS"data_se/pnames.lmp");
strcpy (basedefault,DEVDATA"default.cfg");
return;
}
if (M_CheckParm ("-regdev"))
{
registered = true;
shareware = false;
devparm = true;
D_AddFile (DEVDATA"doom.wad");
D_AddFile (DEVMAPS"data_se/texture1.lmp");
D_AddFile (DEVMAPS"data_se/texture2.lmp");
D_AddFile (DEVMAPS"data_se/pnames.lmp");
strcpy (basedefault,DEVDATA"default.cfg");
return;
}
if (M_CheckParm ("-comdev"))
{
commercial = true;
devparm = true;
#if (EXE_VERSION >= EXE_VERSION_FINAL)
if(plutonia)
D_AddFile (DEVDATA"plutonia.wad");
else if(tnt)
D_AddFile (DEVDATA"tnt.wad");
else
D_AddFile (DEVDATA"doom2.wad");
#else
D_AddFile (DEVDATA"doom2.wad");
#endif
D_AddFile (DEVMAPS"cdata/texture1.lmp");
D_AddFile (DEVMAPS"cdata/pnames.lmp");
strcpy (basedefault,DEVDATA"default.cfg");
return;
}
if ( !access ("doom2f.wad",R_OK) )
{
commercial = true;
// C'est ridicule!
// Let's handle languages in config files, okay?
french = true;
printf("French version\n");
D_AddFile ("doom2f.wad");
return;
}
if ( !access ("doom2.wad",R_OK) )
{
commercial = true;
D_AddFile ("doom2.wad");
return;
}
#if (EXE_VERSION >= EXE_VERSION_FINAL)
if ( !access ("plutonia.wad", R_OK ) )
{
commercial = true;
plutonia = true;
D_AddFile ("plutonia.wad");
return;
}
if ( !access ( "tnt.wad", R_OK ) )
{
commercial = true;
tnt = true;
D_AddFile ("tnt.wad");
return;
}
#endif
if ( !access ("doom.wad",R_OK) )
{
registered = true;
D_AddFile ("doom.wad");
return;
}
if ( !access ("doom1.wad",R_OK) )
{
shareware = true;
D_AddFile ("doom1.wad");
return;
}
printf("Game mode indeterminate.\n");
exit(1);
//I_Error ("Game mode indeterminate\n");
}
//
// Find a Response File
//
void FindResponseFile (void)
{
int i;
#define MAXARGVS 100
for (i = 1;i < myargc;i++)
if (myargv[i][0] == '@')
{
FILE * handle;
int size;
int k;
int index;
int indexinfile;
char *infile;
char *file;
char *moreargs[20];
char *firstargv;
// READ THE RESPONSE FILE INTO MEMORY
handle = fopen (&myargv[i][1],"rb");
if (!handle)
{
printf ("\nNo such response file!");
exit(1);
}
printf("Found response file %s!\n",&myargv[i][1]);
fseek (handle,0,SEEK_END);
size = ftell(handle);
fseek (handle,0,SEEK_SET);
file = malloc (size);
fread (file,size,1,handle);
fclose (handle);
// KEEP ALL CMDLINE ARGS FOLLOWING @RESPONSEFILE ARG
for (index = 0,k = i+1; k < myargc; k++)
moreargs[index++] = myargv[k];
firstargv = myargv[0];
myargv = malloc(sizeof(char *)*MAXARGVS);
memset(myargv,0,sizeof(char *)*MAXARGVS);
myargv[0] = firstargv;
infile = file;
indexinfile = k = 0;
indexinfile++; // SKIP PAST ARGV[0] (KEEP IT)
do
{
myargv[indexinfile++] = infile+k;
while(k < size &&
((*(infile+k)>= ' '+1) && (*(infile+k)<='z')))
k++;
*(infile+k) = 0;
while(k < size &&
((*(infile+k)<= ' ') || (*(infile+k)>'z')))
k++;
} while(k < size);
for (k = 0;k < index;k++)
myargv[indexinfile++] = moreargs[k];
myargc = indexinfile;
// DISPLAY ARGS
printf("%d command-line args:\n",myargc);
for (k=1;k<myargc;k++)
printf("%s\n",myargv[k]);
break;
}
}
//
// D_DoomMain
//
void D_DoomMain (void)
{
int p;
char file[256];
union REGS regs;
FindResponseFile ();
IdentifyVersion ();
setbuf (stdout, NULL);
modifiedgame = false;
nomonsters = M_CheckParm ("-nomonsters");
respawnparm = M_CheckParm ("-respawn");
fastparm = M_CheckParm ("-fast");
devparm = M_CheckParm ("-devparm");
if (M_CheckParm ("-altdeath"))
deathmatch = 2;
else if (M_CheckParm ("-deathmatch"))
deathmatch = 1;
if (!commercial)
{
#if (EXE_VERSION >= EXE_VERSION_ULTIMATE)
sprintf(title,
" "
"The Ultimate DOOM Startup v%i.%i"
" ",
VERSION/100,VERSION%100);
#else
sprintf(title,
" "
"DOOM System Startup v%i.%i"
" ",
VERSION/100,VERSION%100);
#endif
}
else
{
#if (EXE_VERSION >= EXE_VERSION_FINAL)
if (plutonia)
{
sprintf(title,
" "
"DOOM 2: Plutonia Experiment v%i.%i"
" ",
VERSION/100,VERSION%100);
}
else if(tnt)
{
sprintf(title,
" "
"DOOM 2: TNT - Evilution v%i.%i"
" ",
VERSION/100,VERSION%100);
}
else
{
sprintf(title,
" "
"DOOM 2: Hell on Earth v%i.%i"
" ",
VERSION/100,VERSION%100);
}
#else
sprintf(title,
" "
"DOOM 2: Hell on Earth v%i.%i"
" ",
VERSION/100,VERSION%100);
#endif
}
regs.w.ax = 3;
int386(0x10, ®s, ®s);
D_DrawTitle(title, FGCOLOR, BGCOLOR);
printf("\nP_Init: Checking cmd-line parameters...\n");
if (devparm)
{
printf(D_DEVSTR);
D_RedrawTitle();
}
if (M_CheckParm("-cdrom"))
{
printf(D_CDROM);
mkdir("c:\\doomdata");
strcpy (basedefault,"c:/doomdata/default.cfg");
}
// turbo option
if ( (p=M_CheckParm ("-turbo")) )
{
int scale = 200;
extern int forwardmove[2];
extern int sidemove[2];
if (p<myargc-1)
scale = atoi (myargv[p+1]);
if (scale < 10)
scale = 10;
if (scale > 400)
scale = 400;
printf ("turbo scale: %i%%\n",scale);
forwardmove[0] = forwardmove[0]*scale/100;
forwardmove[1] = forwardmove[1]*scale/100;
sidemove[0] = sidemove[0]*scale/100;
sidemove[1] = sidemove[1]*scale/100;
}
// add any files specified on the command line with -file wadfile
// to the wad list
//
// convenience hack to allow -wart e m to add a wad file
// prepend a tilde to the filename so wadfile will be reloadable
p = M_CheckParm ("-wart");
if (p)
{
myargv[p][4] = 'p'; // big hack, change to -warp
// Map name handling.
if (commercial)
{
p = atoi (myargv[p+1]);
if (p<10)
sprintf (file,"~"DEVMAPS"cdata/map0%i.wad", p);
else
sprintf (file,"~"DEVMAPS"cdata/map%i.wad", p);
}
else
{
sprintf (file,"~"DEVMAPS"E%cM%c.wad",
myargv[p+1][0], myargv[p+2][0]);
printf("Warping to Episode %s, Map %s.\n",
myargv[p+1],myargv[p+2]);
}
D_AddFile (file);
}
p = M_CheckParm ("-file");
if (p)
{
// the parms after p are wadfile/lump names,
// until end of parms or another - preceded parm
modifiedgame = true; // homebrew levels
while (++p != myargc && myargv[p][0] != '-')
D_AddFile (myargv[p]);
}
p = M_CheckParm ("-playdemo");