// Emacs style mode select   -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id: G_game.c,v 1.1 2000/04/09 18:14:32 proff_fs Exp $
//
//  PRBOOM/GLBOOM (C) Florian 'Proff' Schulze (florian.proff.schulze@gmx.net)
//  based on
//  BOOM, a modified and improved DOOM engine
//  Copyright (C) 1999 by
//  id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
//
//  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.
//
// DESCRIPTION:  none
//
//-----------------------------------------------------------------------------

static const char
rcsid[] = "$Id: G_game.c,v 1.1 2000/04/09 18:14:32 proff_fs Exp $";

#ifdef _WIN32 // proff: This is for timeGetTime in G_ReloadDefaults
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
// proff 07/04/98: Added for CYGWIN32 compatibility
#ifdef _MSC_VER
#include <mmsystem.h>
#else
DWORD STDCALL timeGetTime(void);
#endif
#else //_WIN32
#include <time.h>
#include <stdarg.h>
#endif //_WIN32

#include "doomstat.h"
#include "f_finale.h"
#include "m_argv.h"
#include "m_misc.h"
#include "m_menu.h"
#include "m_random.h"
#include "p_setup.h"
#include "p_saveg.h"
#include "p_tick.h"
#include "d_main.h"
#include "wi_stuff.h"
#include "hu_stuff.h"
#include "st_stuff.h"
#include "am_map.h"
#include "w_wad.h"
#include "r_main.h"
#include "r_draw.h"
#include "p_map.h"
#include "s_sound.h"
#include "dstrings.h"
#include "sounds.h"
#include "r_data.h"
#include "r_sky.h"
#include "d_deh.h"              // Ty 3/27/98 deh declarations
#include "p_inter.h"
#include "g_game.h"

#define SAVEGAMESIZE  0x20000
#define SAVESTRINGSIZE  24

static size_t   savegamesize = SAVEGAMESIZE; // killough
static char     demoname[PATH_MAX];
static H_boolean  netdemo;
static byte     *demobuffer;   // made some static -- killough
static size_t   maxdemosize;
static byte     *demo_p;
static short    consistancy[MAXPLAYERS][BACKUPTICS];

gameaction_t    gameaction;
gamestate_t     gamestate;
skill_t         gameskill;
H_boolean         respawnmonsters;
int             gameepisode;
int             gamemap;
H_boolean         paused;
H_boolean         sendpause;     // send a pause event next tic
H_boolean         sendsave;      // send a save event next tic
H_boolean         usergame;      // ok to save / end game
H_boolean         timingdemo;    // if true, exit with report on completion
H_boolean         fastdemo;      // if true, run at full speed -- killough
H_boolean         nodrawers;     // for comparative timing purposes
H_boolean         noblit;        // for comparative timing purposes
int             starttime;     // for comparative timing purposes
H_boolean         viewactive;
H_boolean         deathmatch;    // only if started as net death
H_boolean         netgame;       // only true if packets are broadcast
H_boolean         playeringame[MAXPLAYERS];
player_t        players[MAXPLAYERS];
int             consoleplayer; // player taking events and displaying
int             displayplayer; // view being displayed
int             gametic;
int             levelstarttic; // gametic at level start
int             basetic;       // killough 9/29/98: for demo sync
int             totalkills, totalitems, totalsecret;    // for intermission
H_boolean         demorecording;
H_boolean         demoplayback;
H_boolean         singledemo;           // quit after playing a demo from cmdline
#ifdef GL_DOOM
H_boolean         precache = false;     // if true, load all graphics at start
#else
H_boolean         precache = true;      // if true, load all graphics at start
#endif
wbstartstruct_t wminfo;               // parms for world map / intermission
H_boolean         haswolflevels = false;// jff 4/18/98 wolf levels present
byte            *savebuffer;
int             autorun = false;      // always running?          // phares

//
// controls (have defaults)
//

int     key_right;
int     key_left;
int     key_up;
int     key_down;
int     key_menu_right;                                      // phares 3/7/98
int     key_menu_left;                                       //     |
int     key_menu_up;                                         //     V
int     key_menu_down;
int     key_menu_backspace;                                  //     ^
int     key_menu_escape;                                     //     |
int     key_menu_enter;                                      // phares 3/7/98
int     key_strafeleft;
int     key_straferight;
int     key_fire;
int     key_use;
int     key_strafe;
int     key_speed;
int     key_escape = KEYD_ESCAPE;                           // phares 4/13/98
int     key_savegame;                                               // phares
int     key_loadgame;                                               //    |
int     key_autorun;                                                //    V
int     key_reverse;
int     key_zoomin;
int     key_zoomout;
int     key_chat;
int     key_backspace;
int     key_enter;
int     key_map_right;
int     key_map_left;
int     key_map_up;
int     key_map_down;
int     key_map_zoomin;
int     key_map_zoomout;
int     key_map;
int     key_map_gobig;
int     key_map_follow;
int     key_map_mark;
int     key_map_clear;
int     key_map_grid;
int     key_help = KEYD_F1;                                 // phares 4/13/98
int     key_soundvolume;
int     key_hud;
int     key_quicksave;
int     key_endgame;
int     key_messages;
int     key_quickload;
int     key_quit;
int     key_gamma;
int     key_spy;
int     key_pause;
int     destination_keys[MAXPLAYERS];
int     key_weapontoggle;
int     key_weapon1;
int     key_weapon2;
int     key_weapon3;
int     key_weapon4;
int     key_weapon5;
int     key_weapon6;
int     key_weapon7;                                                //    ^
int     key_weapon8;                                                //    |
int     key_weapon9;                                                // phares

int     key_screenshot;             // killough 2/22/98: screenshot key
int     key_setup;                  // killough 10/98: shortcut to setup menu

int     mousebfire;
int     mousebstrafe;
int     mousebforward;
int     mousebbackward; // proff 08/17/98: Added backward to mousebuttons
int     joybfire;
int     joybstrafe;
int     joybuse;
int     joybspeed;

#define MAXPLMOVE   (forwardmove[1])
#define TURBOTHRESHOLD  0x32
#define SLOWTURNTICS  6
#define QUICKREVERSE 32768 // 180 degree reverse                    // phares
#define NUMKEYS   256

fixed_t forwardmove[2] = {0x19, 0x32};
fixed_t sidemove[2]    = {0x18, 0x28};
fixed_t angleturn[3]   = {640, 1280, 320};  // + slow turn

H_boolean gamekeydown[NUMKEYS];
int     turnheld;       // for accelerative turning

H_boolean mousearray[4];
H_boolean *mousebuttons = &mousearray[1];    // allow [-1]

// mouse values are used once
int   mousex;
int   mousey;
int   dclicktime;
int   dclickstate;
int   dclicks;
int   dclicktime2;
int   dclickstate2;
int   dclicks2;

// joystick values are repeated
int   joyxmove;
int   joyymove;
H_boolean joyarray[5];
H_boolean *joybuttons = &joyarray[1];    // allow [-1]

int   savegameslot;
char  savedescription[32];

//jff 3/24/98 declare startskill external, define defaultskill here
extern skill_t startskill;      //note 0-based
int defaultskill;               //note 1-based

// killough 2/8/98: make corpse queue variable in size
int    bodyqueslot, bodyquesize, default_bodyquesize; // killough 2/8/98, 10/98

void   *statcopy;       // for statistics driver

//
// G_BuildTiccmd
// Builds a ticcmd from all of the available inputs
// or reads it from the demo buffer.
// If recording a demo, write it out
//

void G_BuildTiccmd(ticcmd_t* cmd)
{
  H_boolean strafe;
  H_boolean bstrafe;
  int speed;
  int tspeed;
  int forward;
  int side;
  int newweapon;                                          // phares
  ticcmd_t *base;

  base = I_BaseTiccmd();   // empty, or external driver
  memcpy(cmd, base, sizeof *cmd);

  cmd->consistancy = consistancy[consoleplayer][maketic%BACKUPTICS];

  strafe = gamekeydown[key_strafe] || mousebuttons[mousebstrafe]
    || joybuttons[joybstrafe];
  speed = autorun || gamekeydown[key_speed] || joybuttons[joybspeed]; // phares

  forward = side = 0;

    // use two stage accelerative turning
    // on the keyboard and joystick
  if (joyxmove < 0 || joyxmove > 0 ||
      gamekeydown[key_right] || gamekeydown[key_left])
    turnheld += ticdup;
  else
    turnheld = 0;

  if (turnheld < SLOWTURNTICS)
    tspeed = 2;             // slow turn
  else
    tspeed = speed;

  // turn 180 degrees in one keystroke?                           // phares
                                                                  //    |
  if (gamekeydown[key_reverse])                                   //    V
    {
      cmd->angleturn += (short)QUICKREVERSE;                             //    ^
      gamekeydown[key_reverse] = false;                           //    |
    }                                                             // phares

  // let movement keys cancel each other out

  if (strafe)
    {
      if (gamekeydown[key_right])
        side += sidemove[speed];
      if (gamekeydown[key_left])
        side -= sidemove[speed];
      if (joyxmove > 0)
        side += sidemove[speed];
      if (joyxmove < 0)
        side -= sidemove[speed];
    }
  else
    {
      if (gamekeydown[key_right])
        cmd->angleturn -= angleturn[tspeed];
      if (gamekeydown[key_left])
        cmd->angleturn += angleturn[tspeed];
      if (joyxmove > 0)
        cmd->angleturn -= angleturn[tspeed];
      if (joyxmove < 0)
        cmd->angleturn += angleturn[tspeed];
    }

  if (gamekeydown[key_up])
    forward += forwardmove[speed];
  if (gamekeydown[key_down])
    forward -= forwardmove[speed];
  if (joyymove < 0)
    forward += forwardmove[speed];
  if (joyymove > 0)
    forward -= forwardmove[speed];
  if (gamekeydown[key_straferight])
    side += sidemove[speed];
  if (gamekeydown[key_strafeleft])
    side -= sidemove[speed];

    // buttons
  cmd->chatchar = HU_dequeueChatChar();

  if (gamekeydown[key_fire] || mousebuttons[mousebfire] ||
      joybuttons[joybfire])
    cmd->buttons |= BT_ATTACK;

  if (gamekeydown[key_use] || joybuttons[joybuse])
    {
      cmd->buttons |= BT_USE;
      // clear double clicks if hit use button
      dclicks = 0;
    }

  // Toggle between the top 2 favorite weapons.                   // phares
  // If not currently aiming one of these, switch to              // phares
  // the favorite. Only switch if you possess the weapon.         // phares

  // killough 3/22/98:
  //
  // Perform automatic weapons switch here rather than in p_pspr.c,
  // except in demo_compatibility mode.
  //
  // killough 3/26/98, 4/2/98: fix autoswitch when no weapons are left
 
  if ((!demo_compatibility && players[consoleplayer].attackdown &&
       !P_CheckAmmo(&players[consoleplayer])) || gamekeydown[key_weapontoggle])
    newweapon = P_SwitchWeapon(&players[consoleplayer]);           // phares
  else
    {                                 // phares 02/26/98: Added gamemode checks
      newweapon =
        gamekeydown[key_weapon1] ? wp_fist :    // killough 5/2/98: reformatted
        gamekeydown[key_weapon2] ? wp_pistol :
        gamekeydown[key_weapon3] ? wp_shotgun :
        gamekeydown[key_weapon4] ? wp_chaingun :
        gamekeydown[key_weapon5] ? wp_missile :
        gamekeydown[key_weapon6] && gamemode != shareware ? wp_plasma :
        gamekeydown[key_weapon7] && gamemode != shareware ? wp_bfg :
        gamekeydown[key_weapon8] ? wp_chainsaw :
        gamekeydown[key_weapon9] && gamemode == commercial ? wp_supershotgun :
        wp_nochange;

      // killough 3/22/98: For network and demo consistency with the
      // new weapons preferences, we must do the weapons switches here
      // instead of in p_user.c. But for old demos we must do it in
      // p_user.c according to the old rules. Therefore demo_compatibility
      // determines where the weapons switch is made.

      // killough 2/8/98:
      // Allow user to switch to fist even if they have chainsaw.
      // Switch to fist or chainsaw based on preferences.
      // Switch to shotgun or SSG based on preferences.
      //
      // killough 10/98: make SG/SSG and Fist/Chainsaw
      // weapon toggles optional
      
      if (!demo_compatibility && doom_weapon_toggles)
        {
          const player_t *player = &players[consoleplayer];

          // only select chainsaw from '1' if it's owned, it's
          // not already in use, and the player prefers it or
          // the fist is already in use, or the player does not
          // have the berserker strength.

          if (newweapon==wp_fist && player->weaponowned[wp_chainsaw] &&
              player->readyweapon!=wp_chainsaw &&
              (player->readyweapon==wp_fist ||
               !player->powers[pw_strength] ||
               P_WeaponPreferred(wp_chainsaw, wp_fist)))
            newweapon = wp_chainsaw;

          // Select SSG from '3' only if it's owned and the player
          // does not have a shotgun, or if the shotgun is already
          // in use, or if the SSG is not already in use and the
          // player prefers it.

          if (newweapon == wp_shotgun && gamemode == commercial &&
              player->weaponowned[wp_supershotgun] &&
              (!player->weaponowned[wp_shotgun] ||
               player->readyweapon == wp_shotgun ||
               (player->readyweapon != wp_supershotgun &&
                P_WeaponPreferred(wp_supershotgun, wp_shotgun))))
            newweapon = wp_supershotgun;
        }
      // killough 2/8/98, 3/22/98 -- end of weapon selection changes
    }

  if (newweapon != wp_nochange)
    {
      cmd->buttons |= BT_CHANGE;
      cmd->buttons |= newweapon<<BT_WEAPONSHIFT;
    }

  // mouse
  if (mousebuttons[mousebforward])
    forward += forwardmove[speed];
// proff 08/17/98: Added backward to mousebuttons
  if (mousebuttons[mousebbackward])
    forward -= forwardmove[speed];

    // forward double click
  if (mousebuttons[mousebforward] != dclickstate && dclicktime > 1 )
    {
      dclickstate = mousebuttons[mousebforward];
      if (dclickstate)
        dclicks++;
      if (dclicks == 2)
        {
          cmd->buttons |= BT_USE;
          dclicks = 0;
        }
      else
        dclicktime = 0;
    }
  else
    if ((dclicktime += ticdup) > 20)
      {
        dclicks = 0;
        dclickstate = 0;
      }

  // strafe double click

  bstrafe = mousebuttons[mousebstrafe] || joybuttons[joybstrafe];
  if (bstrafe != dclickstate2 && dclicktime2 > 1 )
    {
      dclickstate2 = bstrafe;
      if (dclickstate2)
        dclicks2++;
      if (dclicks2 == 2)
        {
          cmd->buttons |= BT_USE;
          dclicks2 = 0;
        }
      else
        dclicktime2 = 0;
    }
  else
    if ((dclicktime2 += ticdup) > 20)
      {
        dclicks2 = 0;
        dclickstate2 = 0;
      }

  forward += mousey;
  if (strafe)
    side += mousex*2;
  else
    cmd->angleturn -= mousex*0x8;

  mousex = mousey = 0;

  if (forward > MAXPLMOVE)
    forward = MAXPLMOVE;
  else if (forward < -MAXPLMOVE)
    forward = -MAXPLMOVE;
  if (side > MAXPLMOVE)
    side = MAXPLMOVE;
  else if (side < -MAXPLMOVE)
    side = -MAXPLMOVE;
  
  cmd->forwardmove += forward;
  cmd->sidemove += side;

  // special buttons
  if (sendpause)
    {
      sendpause = false;
      cmd->buttons = BT_SPECIAL | BTS_PAUSE;
    }

  // killough 10/6/98: suppress savegames in demos
  if (sendsave && !demoplayback)
    {
      sendsave = false;
      cmd->buttons = BT_SPECIAL | BTS_SAVEGAME | (savegameslot<<BTS_SAVESHIFT);
    }
}

//
// G_DoLoadLevel
//

extern gamestate_t wipegamestate;

static void G_DoLoadLevel(void)
{
  int i;

  // Set the sky map.
  // First thing, we have a dummy sky texture name,
  //  a flat. The data is in the WAD only because
  //  we look for an actual index, instead of simply
  //  setting one.

  skyflatnum = R_FlatNumForName ( SKYFLATNAME );

  // DOOM determines the sky texture to be used
  // depending on the current episode, and the game version.
  if (gamemode == commercial)
    // || gamemode == pack_tnt   //jff 3/27/98 sorry guys pack_tnt,pack_plut
    // || gamemode == pack_plut) //aren't gamemodes, this was matching retail
    {
      skytexture = R_TextureNumForName ("SKY3");
      if (gamemap < 12)
        skytexture = R_TextureNumForName ("SKY1");
      else
        if (gamemap < 21)
          skytexture = R_TextureNumForName ("SKY2");
    }
  else //jff 3/27/98 and lets not forget about DOOM and Ultimate DOOM huh?
    switch (gameepisode)
      {
      case 1:
        skytexture = R_TextureNumForName ("SKY1");
        break;
      case 2:
        skytexture = R_TextureNumForName ("SKY2");
        break;
      case 3:
        skytexture = R_TextureNumForName ("SKY3");
        break;
      case 4: // Special Edition sky
        skytexture = R_TextureNumForName ("SKY4");
        break;
      }//jff 3/27/98 end sky setting fix

  levelstarttic = gametic;        // for time calculation

  if (!demo_compatibility && demo_version < 203)   // killough 9/29/98
    basetic = gametic;

  if (wipegamestate == GS_LEVEL)
    wipegamestate = -1;             // force a wipe

  gamestate = GS_LEVEL;

  for (i=0 ; i<MAXPLAYERS ; i++)
    {
      if (playeringame[i] && players[i].playerstate == PST_DEAD)
        players[i].playerstate = PST_REBORN;
      memset (players[i].frags,0,sizeof(players[i].frags));
    }

  // initialize the msecnode_t freelist.                     phares 3/25/98
  // any nodes in the freelist are gone by now, cleared
  // by Z_FreeTags() when the previous level ended or player
  // died.

   {
    extern msecnode_t *headsecnode; // phares 3/25/98
    headsecnode = NULL;
   }

  P_SetupLevel (gameepisode, gamemap, 0, gameskill);
  displayplayer = consoleplayer;    // view the guy you are playing
  gameaction = ga_nothing;
  Z_CheckHeap();

  // clear cmd building stuff
  memset (gamekeydown, 0, sizeof(gamekeydown));
  joyxmove = joyymove = 0;
  mousex = mousey = 0;
  sendpause = sendsave = paused = false;
  memset (mousebuttons, 0, sizeof(mousebuttons));
  memset (joybuttons, 0, sizeof(joybuttons));

  //jff 4/26/98 wake up the status bar in case were coming out of a DM demo
  // killough 5/13/98: in case netdemo has consoleplayer other than green
  ST_Start();
  HU_Start();

  // killough: make -timedemo work on multilevel demos
  // Move to end of function to minimize noise -- killough 2/22/98:

  if (timingdemo)
    {
      static int first=1;
      if (first)
        {
          starttime = I_GetTime_RealTime();
          first=0;
        }
    }
}

//
// G_Responder
// Get info needed to make ticcmd_ts for the players.
//

H_boolean G_Responder(event_t* ev)
{
  // allow spy mode changes even during the demo
  // killough 2/22/98: even during DM demo
  //
  // killough 11/98: don't autorepeat spy mode switch

  if (ev->data1 == key_spy && netgame && (demoplayback || !deathmatch) &&
      gamestate == GS_LEVEL)
    {
      if (ev->type == ev_keyup)
	gamekeydown[key_spy] = false;
      if (ev->type == ev_keydown && !gamekeydown[key_spy])
	{
	  gamekeydown[key_spy] = true;
	  do                                          // spy mode
	    if (++displayplayer >= MAXPLAYERS)
	      displayplayer = 0;
	  while (!playeringame[displayplayer] && displayplayer!=consoleplayer);

	  ST_Start();    // killough 3/7/98: switch status bar views too
	  HU_Start();
	  S_UpdateSounds(players[displayplayer].mo);
	}
      return true;
    }

  // killough 9/29/98: reformatted
  if (gamestate == GS_LEVEL && (HU_Responder(ev) ||  // chat ate the event
				ST_Responder(ev) ||  // status window ate it
				AM_Responder(ev)))   // automap ate it
    return true;

  // any other key pops up menu if in demos
  //
  // killough 8/2/98: enable automap in -timedemo demos
  //
  // killough 9/29/98: make any key pop up menu regardless of
  // which kind of demo, and allow other events during playback

  if (gameaction == ga_nothing && (demoplayback || gamestate == GS_DEMOSCREEN))
    {
      // killough 9/29/98: allow user to pause demos during playback
      if (ev->type == ev_keydown && ev->data1 == key_pause)
	{
	  if (paused ^= 2)
	    S_PauseSound();
	  else
	    S_ResumeSound();
	  return true;
	}

      // killough 10/98:
      // Don't pop up menu, if paused in middle
      // of demo playback, or if automap active.
      // Don't suck up keys, which may be cheats

      return gamestate == GS_DEMOSCREEN &&
	!(paused & 2) && !automapactive &&
	((ev->type == ev_keydown) ||
	 (ev->type == ev_mouse && ev->data1) ||
	 (ev->type == ev_joystick && ev->data1)) ?
	M_StartControlPanel(), true : false;
    }

  if (gamestate == GS_FINALE && F_Responder(ev))
    return true;  // finale ate the event

  switch (ev->type)
    {
    case ev_keydown:
      if (ev->data1 == key_pause)           // phares
	sendpause = true;
      else
	if (ev->data1 <NUMKEYS)
	  gamekeydown[ev->data1] = true;
      return true;    // eat key down events

    case ev_keyup:
      if (ev->data1 <NUMKEYS)
        gamekeydown[ev->data1] = false;
      return false;   // always let key up events filter down

    case ev_mouse:
      mousebuttons[0] = ev->data1 & 1;
      mousebuttons[1] = ev->data1 & 2;
      mousebuttons[2] = ev->data1 & 4;
      mousex = (ev->data2*(mouseSensitivity_horiz*4))/10;  // killough
      mousey = (ev->data3*(mouseSensitivity_vert*4))/10;
      return true;    // eat events

    case ev_joystick:
      joybuttons[0] = ev->data1 & 1;
      joybuttons[1] = ev->data1 & 2;
      joybuttons[2] = ev->data1 & 4;
      joybuttons[3] = ev->data1 & 8;
      joyxmove = ev->data2;
      joyymove = ev->data3;
      return true;    // eat events

    default:
      break;
    }
  return false;
}

//
// DEMO RECORDING
//

#define DEMOMARKER    0x80

static void G_ReadDemoTiccmd(ticcmd_t *cmd)
{
  if (*demo_p == DEMOMARKER)
    G_CheckDemoStatus();      // end of demo data stream
  else
    {
      cmd->forwardmove = ((signed char)*demo_p++);
      cmd->sidemove = ((signed char)*demo_p++);
      cmd->angleturn = ((unsigned char)*demo_p++)<<8;
      cmd->buttons = (unsigned char)*demo_p++;

      // killough 3/26/98, 10/98: Ignore savegames in demos 
      if (demoplayback && 
	  cmd->buttons & BT_SPECIAL &&
	  cmd->buttons & BTS_SAVEGAME)
	{
	  cmd->buttons &= ~BTS_SAVEGAME;
	  players[consoleplayer].message = "Game Saved (Suppressed)";
	}
    }
}

// Demo limits removed -- killough

static void G_WriteDemoTiccmd(ticcmd_t* cmd)
{
  ptrdiff_t position = demo_p - demobuffer;

  demo_p[0] = cmd->forwardmove;
  demo_p[1] = cmd->sidemove;
  demo_p[2] = (cmd->angleturn+128)>>8;
  demo_p[3] = cmd->buttons;

  if (position+16 > maxdemosize)   // killough 8/23/98
    {
      // no more space
      maxdemosize += 128*1024;   // add another 128K  -- killough
      demobuffer = realloc(demobuffer,maxdemosize);
      demo_p = position + demobuffer;  // back on track
      // end of main demo limit changes -- killough
    }

  G_ReadDemoTiccmd (cmd);         // make SURE it is exactly the same
}

static H_boolean secretexit;

void G_ExitLevel(void)
{
  secretexit = false;
  gameaction = ga_completed;
}

// Here's for the german edition.
// IF NO WOLF3D LEVELS, NO SECRET EXIT!

void G_SecretExitLevel(void)
{
  secretexit = gamemode != commercial || haswolflevels;
  gameaction = ga_completed;
}

//
// G_PlayerFinishLevel
// Can when a player completes a level.
//

static void G_PlayerFinishLevel(int player)
{
  player_t *p = &players[player];
  memset(p->powers, 0, sizeof p->powers);
  memset(p->cards, 0, sizeof p->cards);
  p->mo->flags &= ~MF_SHADOW;   // cancel invisibility
  p->extralight = 0;      // cancel gun flashes
  p->fixedcolormap = 0;   // cancel ir gogles
  p->damagecount = 0;     // no palette changes
  p->bonuscount = 0;
}

//
// G_DoCompleted
//

static void G_DoCompleted(void)
{
  int i;

  gameaction = ga_nothing;

  for (i=0; i<MAXPLAYERS; i++)
    if (playeringame[i])
      G_PlayerFinishLevel(i);        // take away cards and stuff

  if (automapactive)
    AM_Stop();

  if (gamemode != commercial) // kilough 2/7/98
    switch(gamemap)
      {
      case 8:
        gameaction = ga_victory;
        return;
      case 9:
        for (i=0 ; i<MAXPLAYERS ; i++)
          players[i].didsecret = true;
        break;
      }

  wminfo.didsecret = players[consoleplayer].didsecret;
  wminfo.epsd = gameepisode -1;
  wminfo.last = gamemap -1;

  // wminfo.next is 0 biased, unlike gamemap
  if (gamemode == commercial)
    {
      if (secretexit)
        switch(gamemap)
          {
          case 15:
            wminfo.next = 30; break;
          case 31:
            wminfo.next = 31; break;
          }
      else
        switch(gamemap)
          {
          case 31:
          case 32:
            wminfo.next = 15; break;
          default:
            wminfo.next = gamemap;
          }
    }
  else
    {
      if (secretexit)
        wminfo.next = 8;  // go to secret level
      else
        if (gamemap == 9)
          {
            // returning from secret level
            switch (gameepisode)
              {
              case 1:
                wminfo.next = 3;
                break;
              case 2:
                wminfo.next = 5;
                break;
              case 3:
                wminfo.next = 6;
                break;
              case 4:
                wminfo.next = 2;
                break;
              }
          }
        else
          wminfo.next = gamemap;          // go to next level
    }

  wminfo.maxkills = totalkills;
  wminfo.maxitems = totalitems;
  wminfo.maxsecret = totalsecret;
  wminfo.maxfrags = 0;

  if ( gamemode == commercial )
    wminfo.partime = TICRATE*cpars[gamemap-1];
  else
    wminfo.partime = TICRATE*pars[gameepisode][gamemap];

  wminfo.pnum = consoleplayer;

  for (i=0 ; i<MAXPLAYERS ; i++)
    {
      wminfo.plyr[i].in = playeringame[i];
      wminfo.plyr[i].skills = players[i].killcount;
      wminfo.plyr[i].sitems = players[i].itemcount;
      wminfo.plyr[i].ssecret = players[i].secretcount;
      wminfo.plyr[i].stime = leveltime;
      memcpy (wminfo.plyr[i].frags, players[i].frags,
              sizeof(wminfo.plyr[i].frags));
    }

  gamestate = GS_INTERMISSION;
  viewactive = false;
  automapactive = false;

  if (statcopy)
    memcpy (statcopy, &wminfo, sizeof(wminfo));

  WI_Start (&wminfo);
}

static void G_DoWorldDone(void)
{
  idmusnum = -1;             //jff 3/17/98 allow new level's music to be loaded
  gamestate = GS_LEVEL;
  gamemap = wminfo.next+1;
  G_DoLoadLevel();
  gameaction = ga_nothing;
  viewactive = true;
  AM_clearMarks();           //jff 4/12/98 clear any marks on the automap
}

// killough 2/28/98: A ridiculously large number
// of players, the most you'll ever need in a demo
// or savegame. This is used to prevent problems, in
// case more players in a game are supported later.

#define MIN_MAXPLAYERS 32

static char *defdemoname;

static void G_DoPlayDemo(void)
{
  skill_t skill;
  int i, episode, map;
  char basename[9];
  int demover;
  byte *option_p = NULL;      // killough 11/98

  basetic = gametic;  // killough 9/29/98

  ExtractFileBase(defdemoname,basename);           // killough

  demobuffer = demo_p = W_CacheLumpName (basename, PU_STATIC);  // killough

  // killough 2/22/98, 2/28/98: autodetect old demos and act accordingly.
  // Old demos turn on demo_compatibility => compatibility; new demos load
  // compatibility flag, and other flags as well, as a part of the demo.

  demo_version =      // killough 7/19/98: use the version id stored in demo
  demover = *demo_p++;

  if (demover < 200)     // Autodetect old demos
    {
      compatibility = true;
      memset(comp, 0xff, sizeof(comp));  // killough 10/98: a vector now

      // killough 3/2/98: force these variables to be 0 in demo_compatibility

      variable_friction = 0;

      weapon_recoil = 0;

      allow_pushers = 0;

      monster_infighting = 1;           // killough 7/19/98

#ifdef DOGS
      dogs = 0;                         // killough 7/19/98
      dog_jumping = 0;                  // killough 10/98
#endif

      monster_backing = 0;              // killough 9/8/98
      
      monster_avoid_hazards = 0;        // killough 9/9/98

      monster_friction = 0;             // killough 10/98
      help_friends = 0;                 // killough 9/9/98
      monkeys = 0;

      // killough 3/6/98: rearrange to fix savegame bugs (moved fastparm,
      // respawnparm, nomonsters flags to G_LoadOptions()/G_SaveOptions())

      if ((skill=demover) >= 100)         // For demos from versions >= 1.4
        {
          skill = *demo_p++;
          episode = *demo_p++;
          map = *demo_p++;
          deathmatch = *demo_p++;
          respawnparm = *demo_p++;
          fastparm = *demo_p++;
          nomonsters = *demo_p++;
          consoleplayer = *demo_p++;
        }
      else
        {
          episode = *demo_p++;
          map = *demo_p++;
          deathmatch = respawnparm = fastparm =
            nomonsters = consoleplayer = 0;
        }
    }
  else    // new versions of demos
    {
      demo_p += 6;               // skip signature;

      compatibility = *demo_p++;       // load old compatibility flag
      skill = *demo_p++;
      episode = *demo_p++;
      map = *demo_p++;
      deathmatch = *demo_p++;
      consoleplayer = *demo_p++;

      // killough 11/98: save option pointer for below
      if (demover >= 203)
	option_p = demo_p;

      demo_p = G_ReadOptions(demo_p);  // killough 3/1/98: Read game options

      if (demover == 200)        // killough 6/3/98: partially fix v2.00 demos
        demo_p += 256-GAME_OPTION_SIZE;
    }

  if (demo_compatibility)  // only 4 players can exist in old demos
    {
      for (i=0; i<4; i++)  // intentionally hard-coded 4 -- killough
        playeringame[i] = *demo_p++;
      for (;i < MAXPLAYERS; i++)
        playeringame[i] = 0;
    }
  else
    {
      for (i=0 ; i < MAXPLAYERS; i++)
        playeringame[i] = *demo_p++;
      demo_p += MIN_MAXPLAYERS - MAXPLAYERS;
    }

  if (playeringame[1])
    netgame = netdemo = true;

  // don't spend a lot of time in loadlevel

  if (gameaction != ga_loadgame)      // killough 12/98: support -loadgame
    {
      // killough 2/22/98:
      // Do it anyway for timing demos, to reduce timing noise
      precache = timingdemo;
  
      G_InitNew(skill, episode, map);

      // killough 11/98: If OPTIONS were loaded from the wad in G_InitNew(),
      // reload any demo sync-critical ones from the demo itself, to be exactly
      // the same as during recording.
      
      if (option_p)
	G_ReadOptions(option_p);
    }

  precache = true;
  usergame = false;
  demoplayback = true;

  for (i=0; i<MAXPLAYERS;i++)         // killough 4/24/98
    players[i].cheats = 0;

  gameaction = ga_nothing;
}

#define VERSIONSIZE   16

// killough 2/22/98: version id string format for savegames
//proff 11/22/98: Changed because of stealth monsters and MBF bugfixes
#define VERSIONID "PrBoom %d"

static char savename[PATH_MAX+1];

//
// killough 5/15/98: add forced loadgames, which allow user to override checks
//

static H_boolean forced_loadgame = false;
static H_boolean command_loadgame = false;

void G_ForcedLoadGame(void)
{
  gameaction = ga_loadgame;
  forced_loadgame = true;
}

// killough 3/16/98: add slot info
// killough 5/15/98: add command-line

void G_LoadGame(char *name, int slot, H_boolean command)
{
  strcpy(savename, name);
  savegameslot = slot;
  gameaction = ga_loadgame;
  forced_loadgame = false;
  command_loadgame = command;
}

// killough 5/15/98:
// Consistency Error when attempting to load savegame.

static void G_LoadGameErr(const char *msg)
{
  Z_Free(savebuffer);                // Free the savegame buffer
  M_ForcedLoadGame(msg);             // Print message asking for 'Y' to force
  if (command_loadgame)              // If this was a command-line -loadgame
    {
      D_StartTitle();                // Start the title screen
      gamestate = GS_DEMOSCREEN;     // And set the game state accordingly
    }
}

//
// G_SaveGame
// Called by the menu task.
// Description is a 24 byte text string
//

void G_SaveGame(int slot, char *description)
{
  savegameslot = slot;
  strcpy(savedescription, description);
  sendsave = true;
}

// Check for overrun and realloc if necessary -- Lee Killough 1/22/98
void CheckSaveGame(size_t size)
{
  size_t pos = save_p - savebuffer;
  size += 1024;  // breathing room
  if (pos+size > savegamesize)
    save_p = (savebuffer = realloc(savebuffer,
           savegamesize += (size+1023) & ~1023)) + pos;
}

// killough 3/22/98: form savegame name in one location
// (previously code was scattered around in multiple places)

void G_SaveGameName(char *name, int slot)
{
  // Ty 05/04/98 - use savegamename variable (see d_deh.c)
  // killough 12/98: add .7 to truncate savegamename

  if (M_CheckParm("-cdrom"))
    sprintf(name, "c:/doomdata/%.7s%d.dsg", savegamename, slot);
  else
    sprintf(name, "%s/%.7s%d.dsg", basesavegame, savegamename, slot);
}

static ulonglong G_UpdateSignature(ulonglong s,
					    const char *name)
{
  int i, lump = W_CheckNumForName(name);
  if (lump != -1 && (i = lump+10) < numlumps)
    do
      {
	int size = W_LumpLength(i);
	byte *p = W_CacheLumpNum(i, PU_CACHE);
	while (size--)
	  s <<= 1, s += *p++;
      }
    while (--i > lump);
  return s;
}

// killough 12/98:
// This function returns a signature for the current wad.
// It is used to distinguish between wads, for the purposes
// of savegame compatibility warnings, and options lookups.

ulonglong G_Signature(void)
{
  ulonglong s = 0;
  char name[9];
  int episode, map;

  if (gamemode == commercial)
    for (map = haswolflevels ? 32 : 30; map; map--)
      sprintf(name, "map%02d", map), s = G_UpdateSignature(s, name);
  else
    for (episode = gamemode==retail ? 4 :
	   gamemode==shareware ? 1 : 3; episode; episode--)
      for (map = 9; map; map--)
	sprintf(name, "E%dM%d", episode, map), s = G_UpdateSignature(s, name);

  return s;
}

static void G_DoSaveGame(void)
{
  char name[PATH_MAX+1];
  char name2[VERSIONSIZE];
  char *description;
  int  length, i;

  G_SaveGameName(name,savegameslot);

  description = savedescription;

  save_p = savebuffer = malloc(savegamesize);

  CheckSaveGame(SAVESTRINGSIZE+VERSIONSIZE+sizeof(unsigned long));
  memcpy (save_p, description, SAVESTRINGSIZE);
  save_p += SAVESTRINGSIZE;
  memset (name2,0,sizeof(name2));

  // killough 2/22/98: "proprietary" version string :-)
  sprintf (name2,VERSIONID,VERSION);

  memcpy (save_p, name2, VERSIONSIZE);
  save_p += VERSIONSIZE;

  {  // killough 3/16/98, 12/98: store lump name checksum
    ulonglong checksum = G_Signature();
    memcpy(save_p, &checksum, sizeof checksum);
    save_p += sizeof checksum;
  }

  // killough 3/16/98: store pwad filenames in savegame
  {
    char **w = wadfiles;
    for (*save_p = 0; *w; w++)
      {
        CheckSaveGame(strlen(*w)+2);
        strcat(strcat(save_p, *w), "\n");
      }
    save_p += strlen(save_p)+1;
  }

  CheckSaveGame(GAME_OPTION_SIZE+MIN_MAXPLAYERS+10);

  // killough 2/14/98: save old compatibility flag:
  *save_p++ = compatibility;

  *save_p++ = gameskill;
  *save_p++ = gameepisode;
  *save_p++ = gamemap;

  for (i=0 ; i<MAXPLAYERS ; i++)
    *save_p++ = playeringame[i];

  for (;i<MIN_MAXPLAYERS;i++)         // killough 2/28/98
    *save_p++ = 0;

  *save_p++ = idmusnum;               // jff 3/17/98 save idmus state

  save_p = G_WriteOptions(save_p);    // killough 3/1/98: save game options

  memcpy(save_p, &leveltime, sizeof save_p); //killough 11/98: save entire word
  save_p += sizeof save_p;

  // killough 11/98: save revenant tracer state
  *save_p++ = (gametic-basetic) & 255;

  // killough 3/22/98: add Z_CheckHeap after each call to ensure consistency
  Z_CheckHeap();
  P_ArchivePlayers();
  Z_CheckHeap();
  P_ArchiveWorld();
  Z_CheckHeap();
  P_ArchiveThinkers();
  Z_CheckHeap();
  P_ArchiveSpecials();
  P_ArchiveRNG();    // killough 1/18/98: save RNG information
  Z_CheckHeap();
  P_ArchiveMap();    // killough 1/22/98: save automap information

  *save_p++ = 0xe6;   // consistancy marker

  length = save_p - savebuffer;

  Z_CheckHeap();

  if (!M_WriteFile(name, savebuffer, length))
    dprintf(errno ? strerror(errno) : "Could not save game: Error unknown");
  else
    players[consoleplayer].message = s_GGSAVED;  // Ty 03/27/98 - externalized

  free(savebuffer);  // killough
  savebuffer = save_p = NULL;

  gameaction = ga_nothing;
  savedescription[0] = 0;
}

static void G_DoLoadGame(void)
{
  int  length, i;
  char vcheck[VERSIONSIZE];
  ulonglong checksum;

  gameaction = ga_nothing;

  length = M_ReadFile(savename, &savebuffer);
  save_p = savebuffer + SAVESTRINGSIZE;

  // skip the description field

  // killough 2/22/98: "proprietary" version string :-)
  sprintf (vcheck,VERSIONID,VERSION);

  // killough 2/22/98: Friendly savegame version difference message
  if (!forced_loadgame && strncmp(save_p, vcheck, VERSIONSIZE))
    {
      G_LoadGameErr("Different Savegame Version!!!\n\nAre you sure?");
      return;
    }

  save_p += VERSIONSIZE;

  if (!forced_loadgame)
   {  // killough 3/16/98, 12/98: check lump name checksum
     checksum = G_Signature();
     if (memcmp(&checksum, save_p, sizeof checksum))
       {
	 char *msg = malloc(strlen(save_p + sizeof checksum) + 128);
	 strcpy(msg,"Incompatible Savegame!!!\n");
	 if (save_p[sizeof checksum])
	   strcat(strcat(msg,"Wads expected:\n\n"), save_p + sizeof checksum);
	 strcat(msg, "\nAre you sure?");
	 G_LoadGameErr(msg);
	 free(msg);
	 return;
       }
   }

  save_p += sizeof checksum;
  while (*save_p++);

  // killough 2/14/98: load compatibility mode
  compatibility = *save_p++;
  demo_version = VERSION;     // killough 7/19/98: use this version's id

  gameskill = *save_p++;
  gameepisode = *save_p++;
  gamemap = *save_p++;

  for (i=0 ; i<MAXPLAYERS ; i++)
    playeringame[i] = *save_p++;
  save_p += MIN_MAXPLAYERS-MAXPLAYERS;         // killough 2/28/98

  // jff 3/17/98 restore idmus music
  // jff 3/18/98 account for unsigned byte
  // killough 11/98: simplify
  idmusnum = *(signed char *) save_p++;

  // load a base level
  G_InitNew(gameskill, gameepisode, gamemap);

  // killough 3/1/98: Read game options
  // killough 11/98: move down to here
  save_p = G_ReadOptions(save_p);

  // get the times
  // killough 11/98: save entire word
  memcpy(&leveltime, save_p, sizeof save_p);
  save_p += sizeof save_p;

  // killough 11/98: load revenant tracer state
  basetic = gametic - *save_p++;

  // dearchive all the modifications
  P_UnArchivePlayers();
  P_UnArchiveWorld();
  P_UnArchiveThinkers();
  P_UnArchiveSpecials();
  P_UnArchiveRNG();    // killough 1/18/98: load RNG information
  P_UnArchiveMap();    // killough 1/22/98: load automap information

  if (*save_p != 0xe6)
    I_Error ("Bad savegame");

  // done
  Z_Free(savebuffer);

  if (setsizeneeded)
    R_ExecuteSetViewSize();

  // draw the pattern into the back screen
  R_FillBackScreen();

  Z_CheckHeap();

  // killough 12/98: support -recordfrom and -loadgame -playdemo
  if (!command_loadgame)
    singledemo = false;         // Clear singledemo flag if loading from menu
  else
    if (singledemo)
      {
	gameaction = ga_loadgame; // Mark that we're loading a game before demo
	G_DoPlayDemo();           // This will detect it and won't reinit level
      }
    else       // Loading games from menu isn't allowed during demo recordings,
      if (demorecording) // So this can only possibly be a -recordfrom command.
	G_BeginRecording();// Start the -recordfrom, since the game was loaded.
}

//
// G_Ticker
// Make ticcmd_ts for the players.
//

void G_Ticker(void)
{
  int i;

  // do player reborns if needed
  for (i=0 ; i<MAXPLAYERS ; i++)
    if (playeringame[i] && players[i].playerstate == PST_REBORN)
      G_DoReborn (i);

  // do things to change the game state
  while (gameaction != ga_nothing)
    switch (gameaction)
      {
      case ga_loadlevel:
	G_DoLoadLevel();
	break;
      case ga_newgame:
	G_DoNewGame();
	break;
      case ga_loadgame:
	G_DoLoadGame();
	break;
      case ga_savegame:
	G_DoSaveGame();
	break;
      case ga_playdemo:
	G_DoPlayDemo();
	break;
      case ga_completed:
	G_DoCompleted();
	break;
      case ga_victory:
	F_StartFinale();
	break;
      case ga_worlddone:
	G_DoWorldDone();
	break;
      case ga_screenshot:
	M_ScreenShot();
	gameaction = ga_nothing;
	break;
      default:  // killough 9/29/98
	gameaction = ga_nothing;
	break;
    }

  // killough 10/6/98: allow games to be saved during demo
  // playback, by the playback user (not by demo itself)

  if (demoplayback && sendsave)
    {
      sendsave = false;
      G_DoSaveGame();
    }

  // killough 9/29/98: Skip some commands while pausing during demo
  // playback, or while menu is active.
  //
  // We increment basetic and skip processing if a demo being played
  // back is paused or if the menu is active while a non-net game is
  // being played, to maintain sync while allowing pauses.
  //
  // P_Ticker() does not stop netgames if a menu is activated, so
  // we do not need to stop if a menu is pulled up during netgames.

  if (paused & 2 || (!demoplayback && menuactive && !netgame))
    basetic++;  // For revenant tracers and RNG -- we must maintain sync
  else
    {
      // get commands, check consistancy, and build new consistancy check
      int buf = (gametic/ticdup)%BACKUPTICS;

      for (i=0 ; i<MAXPLAYERS ; i++)
	{
	  if (playeringame[i])
	    {
	      ticcmd_t *cmd = &players[i].cmd;

	      memcpy(cmd, &netcmds[i][buf], sizeof *cmd);

	      if (demoplayback)
		G_ReadDemoTiccmd(cmd);

	      if (demorecording)
		G_WriteDemoTiccmd(cmd);

	      // check for turbo cheats
	      // killough 2/14/98, 2/20/98 -- only warn in netgames and demos

	      if ((netgame || demoplayback) && 
		  cmd->forwardmove > TURBOTHRESHOLD &&
		  !(gametic&31) && ((gametic>>5)&3) == i )
		{
		  extern char *player_names[];
		  dprintf("%s is turbo!", player_names[i]); // killough 9/29/98
		}

	      if (netgame && !netdemo && !(gametic%ticdup) )
		{
		  if (gametic > BACKUPTICS
		      && consistancy[i][buf] != cmd->consistancy)
		    I_Error ("consistency failure (%i should be %i)",
			     cmd->consistancy, consistancy[i][buf]);
		  if (players[i].mo)
		    consistancy[i][buf] = players[i].mo->x;
		  else
		    consistancy[i][buf] = 0; // killough 2/14/98
		}
	    }
	}

      // check for special buttons
      for (i=0; i<MAXPLAYERS; i++)
	if (playeringame[i] && players[i].cmd.buttons & BT_SPECIAL)
	  {
	    // killough 9/29/98: allow multiple special buttons
	    if (players[i].cmd.buttons & BTS_PAUSE)
	      if ((paused ^= 1))
		S_PauseSound();
	      else
		S_ResumeSound();
	
	    if (players[i].cmd.buttons & BTS_SAVEGAME)
	      {
		if (!savedescription[0])
		  strcpy(savedescription, "NET GAME");
		savegameslot =
		  (players[i].cmd.buttons & BTS_SAVEMASK)>>BTS_SAVESHIFT;
		gameaction = ga_savegame;
	      }
	  }
    }

  // do main actions

  // killough 9/29/98: split up switch statement
  // into pauseable and unpauseable parts.

  gamestate == GS_LEVEL ? P_Ticker(), ST_Ticker(), AM_Ticker(), HU_Ticker() :
    paused & 2 ? (void) 0 :
      gamestate == GS_INTERMISSION ? WI_Ticker() :
	gamestate == GS_FINALE ? F_Ticker() :
	  gamestate == GS_DEMOSCREEN ? D_PageTicker() : (void) 0;
}

//
// PLAYER STRUCTURE FUNCTIONS
// also see P_SpawnPlayer in P_Things
//

//
// G_PlayerReborn
// Called after a player dies
// almost everything is cleared and initialized
//

void G_PlayerReborn(int player)
{
  player_t *p;
  int i;
  int frags[MAXPLAYERS];
  int killcount;
  int itemcount;
  int secretcount;

  memcpy (frags, players[player].frags, sizeof frags);
  killcount = players[player].killcount;
  itemcount = players[player].itemcount;
  secretcount = players[player].secretcount;

  p = &players[player];

  // killough 3/10/98,3/21/98: preserve cheats across idclev
  {
    int cheats = p->cheats;
    memset (p, 0, sizeof(*p));
    p->cheats = cheats;
  }

  memcpy(players[player].frags, frags, sizeof(players[player].frags));
  players[player].killcount = killcount;
  players[player].itemcount = itemcount;
  players[player].secretcount = secretcount;

  p->usedown = p->attackdown = true;  // don't do anything immediately
  p->playerstate = PST_LIVE;
  p->health = initial_health;  // Ty 03/12/98 - use dehacked values
  p->readyweapon = p->pendingweapon = wp_pistol;
  p->weaponowned[wp_fist] = true;
  p->weaponowned[wp_pistol] = true;
  p->ammo[am_clip] = initial_bullets; // Ty 03/12/98 - use dehacked values

  for (i=0 ; i<NUMAMMO ; i++)
    p->maxammo[i] = maxammo[i];
}

//
// G_CheckSpot
// Returns false if the player cannot be respawned
// at the given mapthing_t spot
// because something is occupying it
//

void P_SpawnPlayer(mapthing_t *mthing);

static H_boolean G_CheckSpot(int playernum, mapthing_t *mthing)
{
  fixed_t     x,y;
  subsector_t *ss;
  unsigned    an;
  mobj_t      *mo;
  int         i;

  if (!players[playernum].mo)
    {
      // first spawn of level, before corpses
      for (i=0 ; i<playernum ; i++)
        if (players[i].mo->x == mthing->x << FRACBITS
            && players[i].mo->y == mthing->y << FRACBITS)
          return false;
      return true;
    }

  x = mthing->x << FRACBITS;
  y = mthing->y << FRACBITS;

  // killough 4/2/98: fix bug where P_CheckPosition() uses a non-solid
  // corpse to detect collisions with other players in DM starts
  //
  // Old code:
  // if (!P_CheckPosition (players[playernum].mo, x, y))
  //    return false;

  players[playernum].mo->flags |=  MF_SOLID;
  i = P_CheckPosition(players[playernum].mo, x, y);
  players[playernum].mo->flags &= ~MF_SOLID;
  if (!i)
    return false;

  // flush an old corpse if needed
  // killough 2/8/98: make corpse queue have an adjustable limit
  // killough 8/1/98: Fix bugs causing strange crashes

  if (bodyquesize > 0)
    {
      static mobj_t **bodyque;
      static size_t queuesize;
      if (queuesize < bodyquesize)
	{
	  bodyque = realloc(bodyque, bodyquesize*sizeof*bodyque);
	  memset(bodyque+queuesize, 0, 
		 (bodyquesize-queuesize)*sizeof*bodyque);
	  queuesize = bodyquesize;
	}
      if (bodyqueslot >= bodyquesize) 
	P_RemoveMobj(bodyque[bodyqueslot % bodyquesize]); 
      bodyque[bodyqueslot++ % bodyquesize] = players[playernum].mo; 
    }
  else
    if (!bodyquesize)
      P_RemoveMobj(players[playernum].mo);

  // spawn a teleport fog
  ss = R_PointInSubsector (x,y);
  an = ( ANG45 * (mthing->angle/45) ) >> ANGLETOFINESHIFT;

  mo = P_SpawnMobj(x+20*finecosine[an], y+20*finesine[an],
                   ss->sector->floorheight, MT_TFOG);

  if (players[consoleplayer].viewz != 1)
    S_StartSound(mo, sfx_telept);  // don't start sound on first frame

  return true;
}

//
// G_DeathMatchSpawnPlayer
// Spawns a player at one of the random death match spots
// called at level load and each death
//

void G_DeathMatchSpawnPlayer(int playernum)
{
  int j, selections = deathmatch_p - deathmatchstarts;

  if (selections < MAXPLAYERS)
    I_Error("Only %i deathmatch spots, %d required", selections, MAXPLAYERS);

  for (j=0 ; j<20 ; j++)
    {
      int i = P_Random(pr_dmspawn) % selections;
      if (G_CheckSpot(playernum, &deathmatchstarts[i]) )
        {
          deathmatchstarts[i].type = playernum+1;
          P_SpawnPlayer (&deathmatchstarts[i]);
          return;
        }
    }

  // no good spot, so the player will probably get stuck
  P_SpawnPlayer (&playerstarts[playernum]);
}

//
// G_DoReborn
//

void G_DoReborn(int playernum)
{
  if (!netgame)
    gameaction = ga_loadlevel;      // reload the level from scratch
  else
    {                               // respawn at the start
      int i;

      // first dissasociate the corpse
      players[playernum].mo->player = NULL;

      // spawn at random spot if in death match
      if (deathmatch)
        {
          G_DeathMatchSpawnPlayer (playernum);
          return;
        }

      if (G_CheckSpot (playernum, &playerstarts[playernum]) )
        {
          P_SpawnPlayer (&playerstarts[playernum]);
          return;
        }

      // try to spawn at one of the other players spots
      for (i=0 ; i<MAXPLAYERS ; i++)
        {
          if (G_CheckSpot (playernum, &playerstarts[i]) )
            {
              playerstarts[i].type = playernum+1; // fake as other player
              P_SpawnPlayer (&playerstarts[i]);
              playerstarts[i].type = i+1;   // restore
              return;
            }
          // he's going to be inside something.  Too bad.
        }
      P_SpawnPlayer (&playerstarts[playernum]);
    }
}

void G_ScreenShot(void)
{
  gameaction = ga_screenshot;
}

// DOOM Par Times
int pars[4][10] = {
  {0},
  {0,30,75,120,90,165,180,180,30,165},
  {0,90,90,90,120,90,360,240,30,170},
  {0,90,45,90,150,90,90,165,30,135}
};

// DOOM II Par Times
int cpars[34] = {
  30,90,120,120,90,150,120,120,270,90,  //  1-10
  210,150,150,150,210,150,420,150,210,150,  // 11-20
  240,150,180,150,150,300,330,420,300,180,  // 21-30
  120,30,30,30          // 31-34
};

//
// G_WorldDone
//

void G_WorldDone(void)
{
  gameaction = ga_worlddone;

  if (secretexit)
    players[consoleplayer].didsecret = true;

  if (gamemode == commercial)
    {
      switch (gamemap)
        {
        case 15:
        case 31:
          if (!secretexit)
            break;
        case 6:
        case 11:
        case 20:
        case 30:
          F_StartFinale();
          break;
        }
    }
}

static skill_t d_skill;
static int     d_episode;
static int     d_map;

void G_DeferedInitNew(skill_t skill, int episode, int map)
{
  d_skill = skill;
  d_episode = episode;
  d_map = map;
  gameaction = ga_newgame;
}

#ifdef DOGS
// killough 7/19/98: Marine's best friend :)
static int G_GetHelpers(void)
{
  int j = M_CheckParm ("-dog");

  if (!j)
    j = M_CheckParm ("-dogs");
  return j ? j+1 < myargc ? atoi(myargv[j+1]) : 1 : default_dogs;
}
#endif

// killough 3/1/98: function to reload all the default parameter
// settings before a new game begins

void G_ReloadDefaults(void)
{
  // killough 3/1/98: Initialize options based on config file
  // (allows functions above to load different values for demos
  // and savegames without messing up defaults).

  weapon_recoil = default_weapon_recoil;    // weapon recoil

  player_bobbing = default_player_bobbing;  // whether player bobs or not

  variable_friction = allow_pushers = true;

  monsters_remember = default_monsters_remember;   // remember former enemies

  monster_infighting = default_monster_infighting; // killough 7/19/98

#ifdef DOGS
  dogs = netgame ? 0 : G_GetHelpers();             // killough 7/19/98
  dog_jumping = default_dog_jumping;
#endif

  distfriend = default_distfriend;                 // killough 8/8/98

  monster_backing = default_monster_backing;     // killough 9/8/98

  monster_avoid_hazards = default_monster_avoid_hazards; // killough 9/9/98

  monster_friction = default_monster_friction;     // killough 10/98

  help_friends = default_help_friends;             // killough 9/9/98

  monkeys = default_monkeys;

  // jff 1/24/98 reset play mode to command line spec'd version
  // killough 3/1/98: moved to here
  respawnparm = clrespawnparm;
  fastparm = clfastparm;
  nomonsters = clnomonsters;

  //jff 3/24/98 set startskill from defaultskill in config file, unless
  // it has already been set by a -skill parameter
  if (startskill==sk_none)
    startskill = (skill_t)(defaultskill-1);

  demoplayback = false;
  singledemo = false;            // killough 9/29/98: don't stop after 1 demo
  netdemo = false;

  // killough 2/21/98:
  memset(playeringame+1, 0, sizeof(*playeringame)*(MAXPLAYERS-1));

  consoleplayer = 0;

  compatibility = false;     // killough 10/98: replaced by comp[] vector
  memcpy(comp, default_comp, sizeof comp);

  demo_version = VERSION;     // killough 7/19/98: use this version's id

  // killough 3/31/98, 4/5/98: demo sync insurance
  demo_insurance = default_demo_insurance == 1;

#ifndef _WIN32 // proff: Use timeGetTime in Windows
  {                            // killough 3/26/98: shuffle random seed
    struct timeval tv;         // use the clock to shuffle random seed
    struct timezone tz;
    gettimeofday(&tv,&tz);
    rngseed += tv.tv_sec*1000ul + tv.tv_usec/1000ul + gametic;
  }
#else //_WIN32
  rngseed += timeGetTime() + gametic;
#endif //_WIN32
}

void G_DoNewGame (void)
{
  G_ReloadDefaults();            // killough 3/1/98
  netgame = false;               // killough 3/29/98
  deathmatch = false;
  basetic = gametic;             // killough 9/29/98

  G_InitNew(d_skill, d_episode, d_map);
  gameaction = ga_nothing;
}

// killough 4/10/98: New function to fix bug which caused Doom
// lockups when idclev was used in conjunction with -fast.

void G_SetFastParms(int fast_pending)
{
  static int fast = 0;            // remembers fast state
  int i;

  if (fast != fast_pending)       // only change if necessary
    if ((fast = fast_pending))
      {
        for (i=S_SARG_RUN1; i<=S_SARG_PAIN2; i++)
          if (states[i].tics != 1 || demo_compatibility) // killough 4/10/98
            states[i].tics >>= 1;  // don't change 1->0 since it causes cycles
        mobjinfo[MT_BRUISERSHOT].speed = 20*FRACUNIT;
        mobjinfo[MT_HEADSHOT].speed = 20*FRACUNIT;
        mobjinfo[MT_TROOPSHOT].speed = 20*FRACUNIT;
      }
    else
      {
        for (i=S_SARG_RUN1; i<=S_SARG_PAIN2; i++)
          states[i].tics <<= 1;
        mobjinfo[MT_BRUISERSHOT].speed = 15*FRACUNIT;
        mobjinfo[MT_HEADSHOT].speed = 10*FRACUNIT;
        mobjinfo[MT_TROOPSHOT].speed = 10*FRACUNIT;
      }
}

// The sky texture to be used instead of the F_SKY1 dummy.
extern int skytexture;

//
// G_InitNew
// Can be called by the startup code or the menu task,
// consoleplayer, displayplayer, playeringame[] should be set.

void G_InitNew(skill_t skill, int episode, int map)
{
  int i;

  if (paused)
    {
      paused = false;
      S_ResumeSound();
    }

  if (skill > sk_nightmare)
    skill = sk_nightmare;

  if (episode < 1)
    episode = 1;

  if (gamemode == retail)
    {
      if (episode > 4)
        episode = 4;
    }
  else
    if (gamemode == shareware)
      {
        if (episode > 1)
          episode = 1; // only start episode 1 on shareware
      }
    else
      if (episode > 3)
        episode = 3;

  if (map < 1)
    map = 1;
  if (map > 9 && gamemode != commercial)
    map = 9;

  G_SetFastParms(fastparm || skill == sk_nightmare);  // killough 4/10/98

  M_ClearRandom();

  respawnmonsters = skill == sk_nightmare || respawnparm;

  // force players to be initialized upon first level load
  for (i=0 ; i<MAXPLAYERS ; i++)
    players[i].playerstate = PST_REBORN;

  usergame = true;                // will be set false if a demo
  paused = false;
  demoplayback = false;
  automapactive = false;
  viewactive = true;
  gameepisode = episode;
  gamemap = map;
  gameskill = skill;

  //jff 4/16/98 force marks on automap cleared every new level start
  AM_clearMarks();

  if (demo_version >= 203)
    M_LoadOptions();     // killough 11/98: read OPTIONS lump from wad

  G_DoLoadLevel();
}

//
// G_RecordDemo
//

void G_RecordDemo(char *name)
{
  int i;

  demo_insurance = default_demo_insurance!=0;     // killough 12/98
      
  usergame = false;
  AddDefaultExtension(strcpy(demoname, name), ".lmp");  // 1/18/98 killough
  i = M_CheckParm ("-maxdemo");
  if (i && i<myargc-1)
    maxdemosize = atoi(myargv[i+1])*1024;
  if (maxdemosize < 0x20000)  // killough
    maxdemosize = 0x20000;
  demobuffer = malloc(maxdemosize); // killough
  demorecording = true;
}

// These functions are used to read and write game-specific options in demos
// and savegames so that demo sync is preserved and savegame restoration is
// complete. Not all options (for example "compatibility"), however, should
// be loaded and saved here. It is extremely important to use the same
// positions as before for the variables, so if one becomes obsolete, the
// byte(s) should still be skipped over or padded with 0's.
// Lee Killough 3/1/98

byte *G_WriteOptions(byte *demo_p)
{
  byte *target = demo_p + GAME_OPTION_SIZE;

  *demo_p++ = monsters_remember;  // part of monster AI

  *demo_p++ = variable_friction;  // ice & mud

  *demo_p++ = weapon_recoil;      // weapon recoil

  *demo_p++ = allow_pushers;      // MT_PUSH Things

  *demo_p++ = 0;

  *demo_p++ = player_bobbing;  // whether player bobs or not

  // killough 3/6/98: add parameters to savegame, move around some in demos
  *demo_p++ = respawnparm;
  *demo_p++ = fastparm;
  *demo_p++ = nomonsters;

  *demo_p++ = demo_insurance;        // killough 3/31/98

  // killough 3/26/98: Added rngseed. 3/31/98: moved here
  *demo_p++ = (byte)((rngseed >> 24) & 0xff);
  *demo_p++ = (byte)((rngseed >> 16) & 0xff);
  *demo_p++ = (byte)((rngseed >>  8) & 0xff);
  *demo_p++ = (byte)( rngseed        & 0xff);

  // Options new to v2.03 begin here

  *demo_p++ = monster_infighting;   // killough 7/19/98

#ifdef DOGS
  *demo_p++ = dogs;                 // killough 7/19/98
#else
  *demo_p++ = 0;
#endif

  *demo_p++ = 0;
  *demo_p++ = 0;

  *demo_p++ = (distfriend >> 8) & 0xff;  // killough 8/8/98  
  *demo_p++ =  distfriend       & 0xff;  // killough 8/8/98  

  *demo_p++ = monster_backing;         // killough 9/8/98

  *demo_p++ = monster_avoid_hazards;    // killough 9/9/98

  *demo_p++ = monster_friction;         // killough 10/98

  *demo_p++ = help_friends;             // killough 9/9/98

#ifdef DOGS
  *demo_p++ = dog_jumping;
#else
  *demo_p++ = 0;
#endif

  *demo_p++ = monkeys;

  {   // killough 10/98: a compatibility vector now
    int i;
    for (i=0; i < COMP_TOTAL; i++)
      *demo_p++ = comp[i] != 0;
  }

  //----------------
  // Padding at end
  //----------------
  while (demo_p < target)
    *demo_p++ = 0;

  if (demo_p != target)
    I_Error("G_WriteOptions: GAME_OPTION_SIZE is too small");

  return target;
}

// Same, but read instead of write

byte *G_ReadOptions(byte *demo_p)
{
  byte *target = demo_p + GAME_OPTION_SIZE;

  monsters_remember = *demo_p++;

  variable_friction = *demo_p;  // ice & mud
  demo_p++;

  weapon_recoil = *demo_p;       // weapon recoil
  demo_p++;

  allow_pushers = *demo_p;      // MT_PUSH Things
  demo_p++;

  demo_p++;

  player_bobbing = *demo_p;     // whether player bobs or not
  demo_p++;

  // killough 3/6/98: add parameters to savegame, move from demo
  respawnparm = *demo_p++;
  fastparm = *demo_p++;
  nomonsters = *demo_p++;

  demo_insurance = *demo_p++;              // killough 3/31/98

  // killough 3/26/98: Added rngseed to demos; 3/31/98: moved here

  rngseed  = *demo_p++ & 0xff;
  rngseed <<= 8;
  rngseed += *demo_p++ & 0xff;
  rngseed <<= 8;
  rngseed += *demo_p++ & 0xff;
  rngseed <<= 8;
  rngseed += *demo_p++ & 0xff;

  // Options new to v2.03
  if (demo_version >= 203)
    {
      monster_infighting = *demo_p++;   // killough 7/19/98

#ifdef DOGS
      dogs = *demo_p++;                 // killough 7/19/98
#else
      demo_p++;
#endif

      demo_p += 2;

      distfriend = *demo_p++ << 8;      // killough 8/8/98
      distfriend+= *demo_p++;

      monster_backing = *demo_p++;     // killough 9/8/98

      monster_avoid_hazards = *demo_p++; // killough 9/9/98

      monster_friction = *demo_p++;      // killough 10/98

      help_friends = *demo_p++;          // killough 9/9/98

#ifdef DOGS
      dog_jumping = *demo_p++;           // killough 10/98
#else
      demo_p++;
#endif

      monkeys = *demo_p++;

      {   // killough 10/98: a compatibility vector now
	int i;
	for (i=0; i < COMP_TOTAL; i++)
	  comp[i] = *demo_p++;
      }

      // Options new to v2.04, etc.
      if (demo_version >= 204)
	;
    }
  else  // defaults for versions < 2.02
    {
      int i;  // killough 10/98: a compatibility vector now
      for (i=0; i < COMP_TOTAL; i++)
	comp[i] = compatibility;

      monster_infighting = 1;           // killough 7/19/98

      monster_backing = 0;              // killough 9/8/98
      
      monster_avoid_hazards = 0;        // killough 9/9/98

      monster_friction = 0;             // killough 10/98

      help_friends = 0;                 // killough 9/9/98

#ifdef DOGS
      dogs = 0;                         // killough 7/19/98
      dog_jumping = 0;                  // killough 10/98
#endif

      monkeys = 0;
    }

  return target;
}

void G_BeginRecording(void)
{
  int i;

  demo_p = demobuffer;

  *demo_p++ = VERSION;

  // signature
  *demo_p++ = 0x1d;
  *demo_p++ = 'M';
  *demo_p++ = 'B';
  *demo_p++ = 'F';
  *demo_p++ = 0xe6;
  *demo_p++ = '\0';

  // killough 2/22/98: save compatibility flag in new demos
  *demo_p++ = compatibility;       // killough 2/22/98

  demo_version = VERSION;     // killough 7/19/98: use this version's id

  *demo_p++ = gameskill;
  *demo_p++ = gameepisode;
  *demo_p++ = gamemap;
  *demo_p++ = deathmatch;
  *demo_p++ = consoleplayer;

  demo_p = G_WriteOptions(demo_p); // killough 3/1/98: Save game options

  for (i=0 ; i<MAXPLAYERS ; i++)
    *demo_p++ = playeringame[i];

  // killough 2/28/98:
  // We always store at least MIN_MAXPLAYERS bytes in demo, to
  // support enhancements later w/o losing demo compatibility

  for (; i<MIN_MAXPLAYERS; i++)
    *demo_p++ = 0;
}

//
// G_PlayDemo
//

void G_DeferedPlayDemo(char* name)
{
  defdemoname = name;
  gameaction = ga_playdemo;
}

//===================
//=
//= G_CheckDemoStatus
//=
//= Called after a death or level completion to allow demos to be cleaned up
//= Returns true if a new demo loop action will take place
//===================

H_boolean G_CheckDemoStatus(void)
{
  if (demorecording)
    {
      demorecording = false;
      *demo_p++ = DEMOMARKER;

      if (!M_WriteFile(demoname, demobuffer, demo_p - demobuffer))
	I_Error("Error recording demo %s: %s", demoname,  // killough 11/98
		errno ? strerror(errno) : "(Unknown Error)");

      free(demobuffer);
      demobuffer = NULL;  // killough
      I_Error("Demo %s recorded",demoname);
      return false;  // killough
    }

  if (timingdemo)
    {
      int endtime = I_GetTime_RealTime();
      // killough -- added fps information and made it work for longer demos:
      unsigned realtics = endtime-starttime;
      I_Error ("Timed %u gametics in %u realtics = %-.1f frames per second",
               (unsigned) gametic,realtics,
               (unsigned) gametic * (double) TICRATE / realtics);
    }

  if (demoplayback)
    {
      if (singledemo)
        exit(0);  // killough

      Z_ChangeTag(demobuffer, PU_CACHE);
      G_ReloadDefaults();    // killough 3/1/98
      netgame = false;       // killough 3/29/98
      deathmatch = false;
      D_AdvanceDemo();
      return true;
    }
  return false;
}

// killough 1/22/98: this is a "Doom printf" for messages. I've gotten
// tired of using players->message=... and so I've added this dprintf.
//
// killough 3/6/98: Made limit static to allow z_zone functions to call
// this function, without calling realloc(), which seems to cause problems.

#define MAX_MESSAGE_SIZE 1024

void dprintf(const char *s, ...)
{
  static char msg[MAX_MESSAGE_SIZE];
  va_list v;
  va_start(v,s);
  vsprintf(msg,s,v);                  // print message in buffer
  va_end(v);
  players[consoleplayer].message = msg;  // set new message
}

//----------------------------------------------------------------------------
//
// $Log: G_game.c,v $
// Revision 1.1  2000/04/09 18:14:32  proff_fs
// Initial revision
//
// Revision 1.59  1998/06/03  20:23:10  killough
// fix v2.00 demos
//
// Revision 1.58  1998/05/16  09:16:57  killough
// Make loadgame checksum friendlier
//
// Revision 1.57  1998/05/15  00:32:28  killough
// Remove unnecessary crash hack
//
// Revision 1.56  1998/05/13  22:59:23  killough
// Restore Doom bug compatibility for demos, fix multiplayer status bar
//
// Revision 1.55  1998/05/12  12:46:16  phares
// Removed OVER_UNDER code
//
// Revision 1.54  1998/05/07  00:48:51  killough
// Avoid displaying uncalled for precision
//
// Revision 1.53  1998/05/06  15:32:24  jim
// document g_game.c, change externals
//
// Revision 1.52  1998/05/05  16:29:06  phares
// Removed RECOIL and OPT_BOBBING defines
//
// Revision 1.51  1998/05/04  22:00:33  thldrmn
// savegamename globalization
//
// Revision 1.50  1998/05/03  22:15:19  killough
// beautification, decls & headers, net consistency fix
//
// Revision 1.49  1998/04/27  17:30:12  jim
// Fix DM demo/newgame status, remove IDK (again)
//
// Revision 1.48  1998/04/25  12:03:44  jim
// Fix secret level fix
//
// Revision 1.46  1998/04/24  12:09:01  killough
// Clear player cheats before demo starts
//
// Revision 1.45  1998/04/19  19:24:19  jim
// Improved IWAD search
//
// Revision 1.44  1998/04/16  16:17:09  jim
// Fixed disappearing marks after new level
//
// Revision 1.43  1998/04/14  10:55:13  phares
// Recoil, Bobbing, Monsters Remember changes in Setup now take effect immediately
//
// Revision 1.42  1998/04/13  21:36:12  phares
// Cemented ESC and F1 in place
//
// Revision 1.41  1998/04/13  10:40:58  stan
// Now synch up all items identified by Lee Killough as essential to
// game synch (including bobbing, recoil, rngseed).  Commented out
// code in g_game.c so rndseed is always set even in netgame.
//
// Revision 1.40  1998/04/13  00:39:29  jim
// Fix automap marks carrying over thru levels
//
// Revision 1.39  1998/04/10  06:33:00  killough
// Fix -fast parameter bugs
//
// Revision 1.38  1998/04/06  04:51:32  killough
// Allow demo_insurance=2
//
// Revision 1.37  1998/04/05  00:50:48  phares
// Joystick support, Main Menu re-ordering
//
// Revision 1.36  1998/04/02  16:15:24  killough
// Fix weapons switch
//
// Revision 1.35  1998/04/02  04:04:27  killough
// Fix DM respawn sticking problem
//
// Revision 1.34  1998/04/02  00:47:19  killough
// Fix net consistency errors
//
// Revision 1.33  1998/03/31  10:36:41  killough
// Fix crash caused by last change, add new RNG options
//
// Revision 1.32  1998/03/28  19:15:48  killough
// fix DM spawn bug (Stan's fix)
//
// Revision 1.31  1998/03/28  17:55:06  killough
// Fix weapons switch bug, improve RNG while maintaining sync
//
// Revision 1.30  1998/03/28  15:49:47  jim
// Fixed merge glitches in d_main.c and g_game.c
//
// Revision 1.29  1998/03/28  05:32:00  jim
// Text enabling changes for DEH
//
// Revision 1.28  1998/03/27  21:27:00  jim
// Fixed sky bug for Ultimate DOOM
//
// Revision 1.27  1998/03/27  16:11:43  stan
// (SG) Commented out lines in G_ReloadDefaults that reset netgame and
//      deathmatch to zero.
//
// Revision 1.26  1998/03/25  22:51:25  phares
// Fixed headsecnode bug trashing memory
//
// Revision 1.25  1998/03/24  15:59:17  jim
// Added default_skill parameter to config file
//
// Revision 1.24  1998/03/23  15:23:39  phares
// Changed pushers to linedef control
//
// Revision 1.23  1998/03/23  03:14:27  killough
// Fix savegame checksum, net/demo consistency w.r.t. weapon switch
//
// Revision 1.22  1998/03/20  00:29:39  phares
// Changed friction to linedef control
//
// Revision 1.21  1998/03/18  16:16:47  jim
// Fix to idmusnum handling
//
// Revision 1.20  1998/03/17  20:44:14  jim
// fixed idmus non-restore, space bug
//
// Revision 1.19  1998/03/16  12:29:14  killough
// Add savegame checksum test
//
// Revision 1.18  1998/03/14  17:17:24  jim
// Fixes to deh
//
// Revision 1.17  1998/03/11  17:48:01  phares
// New cheats, clean help code, friction fix
//
// Revision 1.16  1998/03/09  18:29:17  phares
// Created separately bound automap and menu keys
//
// Revision 1.15  1998/03/09  07:09:20  killough
// Avoid realloc() in dprintf(), fix savegame -nomonsters bug
//
// Revision 1.14  1998/03/02  11:27:45  killough
// Forward and backward demo sync compatibility
//
// Revision 1.13  1998/02/27  08:09:22  phares
// Added gamemode checks to weapon selection
//
// Revision 1.12  1998/02/24  08:45:35  phares
// Pushers, recoil, new friction, and over/under work
//
// Revision 1.11  1998/02/23  04:19:35  killough
// Fix Internal and v1.9 Demo sync problems
//
// Revision 1.10  1998/02/20  22:50:51  killough
// Fix dprintf for multiplayer games
//
// Revision 1.9  1998/02/20  06:15:08  killough
// Turn turbo messages on in demo playbacks
//
// Revision 1.8  1998/02/17  05:53:41  killough
// Suppress "green is turbo" in non-net games
// Remove dependence on RNG for net consistency (intereferes with RNG)
// Use new RNG calling method, with keys assigned to blocks
// Friendlier savegame version difference message (instead of nothing)
// Remove futile attempt to make Boom v1.9-savegame-compatibile
//
// Revision 1.7  1998/02/15  02:47:41  phares
// User-defined keys
//
// Revision 1.6  1998/02/09  02:57:08  killough
// Make player corpse limit user-configurable
// Fix ExM8 level endings
// Stop 'q' from ending demo recordings
//
// Revision 1.5  1998/02/02  13:44:45  killough
// Fix dprintf and CheckSaveGame realloc bugs
//
// Revision 1.4  1998/01/26  19:23:18  phares
// First rev with no ^Ms
//
// Revision 1.3  1998/01/24  21:03:07  jim
// Fixed disappearence of nomonsters, respawn, or fast mode after demo play or IDCLEV
//
// Revision 1.1.1.1  1998/01/19  14:02:54  rand
// Lee's Jan 19 sources
//
//----------------------------------------------------------------------------