d_main.c

The source code of Doom legacy for windows

// Emacs style mode select   -*- C++ -*- 
//-----------------------------------------------------------------------------
//
// $Id: d_main.c,v 1.46 2001/04/27 13:32:13 bpereira Exp $
//
// Copyright (C) 1993-1996 by id Software, Inc.
// Portions Copyright (C) 1998-2000 by DooM Legacy Team.
//
// 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.
//
//
// $Log: d_main.c,v $
// Revision 1.46  2001/04/27 13:32:13  bpereira
// no message
//
// Revision 1.45  2001/04/17 22:26:07  calumr
// Initial Mac add
//
// Revision 1.44  2001/04/04 20:24:21  judgecutor
// Added support for the 3D Sound
//
// Revision 1.43  2001/04/02 18:54:32  bpereira
// no message
//
// Revision 1.42  2001/04/01 17:35:06  bpereira
// no message
//
// Revision 1.41  2001/03/30 17:12:49  bpereira
// no message
//
// Revision 1.40  2001/03/19 18:25:02  hurdler
// Is there a GOOD reason to check for modified game with shareware version?
//
// Revision 1.39  2001/03/03 19:43:09  ydario
// OS/2 code cleanup
//
// Revision 1.38  2001/02/24 13:35:19  bpereira
// no message
//
// Revision 1.37  2001/02/10 12:27:13  bpereira
// no message
//
// Revision 1.36  2001/01/25 22:15:41  bpereira
// added heretic support
//
// Revision 1.35  2000/11/06 20:52:15  bpereira
// no message
//
// Revision 1.34  2000/11/03 03:27:17  stroggonmeth
// Again with the bug fixing...
//
// Revision 1.33  2000/11/02 19:49:35  bpereira
// no message
//
// Revision 1.32  2000/11/02 17:50:06  stroggonmeth
// Big 3Dfloors & FraggleScript commit!!
//
// Revision 1.31  2000/10/21 08:43:28  bpereira
// no message
//
// Revision 1.30  2000/10/08 13:29:59  bpereira
// no message
//
// Revision 1.29  2000/10/02 18:25:44  bpereira
// no message
//
// Revision 1.28  2000/10/01 10:18:16  bpereira
// no message
//
// Revision 1.27  2000/09/28 20:57:14  bpereira
// no message
//
// Revision 1.26  2000/08/31 14:30:55  bpereira
// no message
//
// Revision 1.25  2000/08/29 15:53:47  hurdler
// Remove master server connect timeout on LAN (not connected to Internet)
//
// Revision 1.24  2000/08/21 21:13:00  metzgermeister
// Implementation of I_GetKey() in Linux
//
// Revision 1.23  2000/08/10 14:50:19  ydario
// OS/2 port
//
// Revision 1.22  2000/05/07 08:27:56  metzgermeister
// no message
//
// Revision 1.21  2000/04/30 10:30:10  bpereira
// no message
//
// Revision 1.20  2000/04/25 19:49:46  metzgermeister
// support for automatic wad search
//
// Revision 1.19  2000/04/24 20:24:38  bpereira
// no message
//
// Revision 1.18  2000/04/23 16:19:52  bpereira
// no message
//
// Revision 1.17  2000/04/22 20:27:35  metzgermeister
// support for immediate fullscreen switching
//
// Revision 1.16  2000/04/21 20:04:20  hurdler
// fix a problem with my last SDL merge
//
// Revision 1.15  2000/04/19 15:21:02  hurdler
// add SDL midi support
//
// Revision 1.14  2000/04/18 12:55:39  hurdler
// join with Boris' code
//
// Revision 1.13  2000/04/16 18:38:07  bpereira
// no message
//
// Revision 1.12  2000/04/07 23:10:15  metzgermeister
// fullscreen support under X in Linux
//
// Revision 1.11  2000/04/06 20:40:22  hurdler
// Mostly remove warnings under windows
//
// Revision 1.10  2000/04/05 15:47:46  stroggonmeth
// Added hack for Dehacked lumps. Transparent sprites are now affected by colormaps.
//
// Revision 1.9  2000/04/04 00:32:45  stroggonmeth
// Initial Boom compatability plus few misc changes all around.
//
// Revision 1.8  2000/03/29 19:39:48  bpereira
// no message
//
// Revision 1.7  2000/03/28 16:18:41  linuxcub
// Added a command to the Linux sound-server which sets a master volume.
// Someone needs to check that this isn't too much of a performance drop
// on slow machines. (Works for me).
//
// Added code to the main parts of doomlegacy which uses this command to
// implement volume control for sound effects.
//
// Added code so the (really cool) cd music works for me. The volume didn't
// work for me (with a Teac 532E drive): It always started at max (31) no-
// matter what the setting in the config-file was. The added code "jiggles"
// the volume-control, and now it works for me :-)
// If this code is unacceptable, perhaps another solution is to periodically
// compare the cd_volume.value with an actual value _read_ from the drive.
// Ie. not trusting that calling the ioctl with the correct value actually
// sets the hardware-volume to the requested value. Right now, the ioctl
// is assumed to work perfectly, and the value in cd_volume.value is
// compared periodically with cdvolume.
//
// Updated the spec file, so an updated RPM can easily be built, with
// a minimum of editing. Where can I upload my pre-built (S)RPMS to ?
//
// Erling Jacobsen, [e-mail]
//
// Revision 1.6  2000/03/23 22:54:00  metzgermeister
// added support for HOME/.legacy under Linux
//
// Revision 1.5  2000/03/06 17:33:36  hurdler
// compiler warning removed
//
// Revision 1.4  2000/03/05 17:10:56  bpereira
// no message
//
// Revision 1.3  2000/02/27 00:42:10  hurdler
// fix CR+LF problem
//
//
// 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.
//
//-----------------------------------------------------------------------------

#ifdef LINUX
#include <sys/stat.h>
#include <sys/types.h>
#endif

#ifndef __WIN32__
#include <unistd.h>             // for access
#else
#include <direct.h>
#endif
#include <fcntl.h>

#ifdef __OS2__
#include "I_os2.h"
#endif

#include "doomdef.h"

#include "command.h"
#include "console.h"

#include "doomstat.h"

#include "am_map.h"
#include "d_net.h"
#include "d_netcmd.h"
#include "dehacked.h"
#include "dstrings.h"

#include "f_wipe.h"
#include "f_finale.h"

#include "g_game.h"
#include "g_input.h"

#include "hu_stuff.h"

#include "i_sound.h"
#include "i_system.h"
#include "i_video.h"

#include "m_argv.h"
#include "m_menu.h"
#include "m_misc.h"

#include "p_setup.h"
#include "p_fab.h"
#include "p_info.h"

#include "r_main.h"
#include "r_local.h"

#include "s_sound.h"
#include "st_stuff.h"

#include "t_script.h"

#include "v_video.h"

#include "wi_stuff.h"
#include "w_wad.h"

#include "z_zone.h"
#include "d_main.h"
#include "d_netfil.h"
#include "p_heretic.h"
#include "m_cheat.h"

#ifdef HWRENDER
#include "hardware/hw_main.h"   // 3D View Rendering
#endif

#ifdef HW3SOUND
#include "hardware/hw3sound.h"
#endif


//
//  DEMO LOOP
//
int             demosequence;
int             pagetic;
char            *pagename="TITLEPIC";

//  PROTOS
void D_PageDrawer (char* lumpname);
void D_AdvanceDemo (void);

#ifdef LINUX
void VID_PrepareModeList(void); // FIXME: very dirty; will use a proper include file
#endif

char*           startupwadfiles[MAX_WADFILES];

boolean         devparm;        // started game with -devparm
boolean         nomonsters;     // checkparm of -nomonsters

boolean         singletics = false; // timedemo

boolean         nomusic;    
boolean         nosound;


boolean         advancedemo;


char            wadfile[1024];          // primary wad file
char            mapdir[1024];           // directory of development maps

//
// EVENT HANDLING
//
// Events are asynchronous inputs generally generated by the game user.
// Events can be discarded if no responder claims them
// referenced from i_system.c for I_GetKey()

event_t         events[MAXEVENTS];
int             eventhead;
int             eventtail;

//
// D_PostEvent
// Called by the I/O functions when input is detected
//
void D_PostEvent (const event_t* ev)
{
    events[eventhead] = *ev;
    eventhead = (++eventhead)&(MAXEVENTS-1);
}
// just for lock this function
#ifdef PC_DOS
void D_PostEvent_end(void) {};
#endif


//
// D_ProcessEvents
// Send all the events of the given timestamp down the responder chain
//
void D_ProcessEvents (void)
{
    event_t*    ev;

    for ( ; eventtail != eventhead ; eventtail = (++eventtail)&(MAXEVENTS-1) )
    {
        ev = &events[eventtail];
        // Menu input
        if (M_Responder (ev))
            continue;              // menu ate the event

        // console input
        if (CON_Responder (ev))
            continue;              // ate the event

        G_Responder (ev);
    }
}


//
// D_Display
//  draw current display, possibly wiping it from the previous
//

#ifdef __WIN32__
void I_DoStartupMouse (void);   //win_sys.c
#endif

// wipegamestate can be set to -1 to force a wipe on the next draw
// added comment : there is a wipe eatch change of the gamestate
gamestate_t  wipegamestate = GS_DEMOSCREEN;
CV_PossibleValue_t screenslink_cons_t[]={{0,"None"},{wipe_ColorXForm+1,"Color"},{wipe_Melt+1,"Melt"},{0,NULL}};
consvar_t cv_screenslink    = {"screenlink","2", CV_SAVE,screenslink_cons_t};

void D_Display (void)
{
    static  boolean             viewactivestate = false;
    static  boolean             menuactivestate = false;
    static  gamestate_t         oldgamestate = -1;
    static  int                 borderdrawcount;
    tic_t                       nowtime;
    tic_t                       tics;
    tic_t                       wipestart;
    int                         y;
    boolean                     done;
    boolean                     wipe;
    boolean                     redrawsbar;

    if (nodrawers)
        return;                    // for comparative timing / profiling

    redrawsbar = false;

    //added:21-01-98: check for change of screen size (video mode)
    if (setmodeneeded)
        SCR_SetMode();  // change video mode

    if (vid.recalc)
        //added:26-01-98: NOTE! setsizeneeded is set by SCR_Recalc()
        SCR_Recalc();

    // change the view size if needed
    if( setsizeneeded )
    {
        R_ExecuteSetViewSize ();
        oldgamestate = -1;                      // force background redraw
        borderdrawcount = 3;
        redrawsbar = true;
    }

    // save the current screen if about to wipe
    if (gamestate != wipegamestate &&
        rendermode == render_soft)
    {
        wipe = true;
        wipe_StartScreen(0, 0, vid.width, vid.height);
    }
    else
        wipe = false;

    // draw buffered stuff to screen
    // BP: Used only by linux GGI version
    I_UpdateNoBlit ();

    // do buffered drawing
    switch (gamestate)
    {
      case GS_LEVEL:
        if (!gametic)
            break;
        HU_Erase();
        if (automapactive)
            AM_Drawer ();
        if (wipe || menuactivestate
#ifdef HWRENDER
                 || rendermode != render_soft
#endif
                 || vid.recalc)
            redrawsbar = true;
        break;

      case GS_INTERMISSION:
        WI_Drawer ();
        break;

      case GS_FINALE:
        F_Drawer ();
        break;

      case GS_DEDICATEDSERVER:
      case GS_DEMOSCREEN:
        D_PageDrawer (pagename);
      case GS_WAITINGPLAYERS:
      case GS_NULL:
        break;
    }