g_game.c

doom游戏

      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+5)/10; 
	mousey = ev->data3*(mouseSensitivity+5)/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; 
} 
 
 
 
//
// G_Ticker
// Make ticcmd_ts for the players.
//
void G_Ticker (void) 
{ 
    int		i;
    int		buf; 
    ticcmd_t*	cmd;
    
    // 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; 
	  case ga_nothing: 
	    break; 
	} 
    }
    
    // get commands, check consistancy,
    // and build new consistancy check
    buf = (gametic/ticdup)%BACKUPTICS; 
 
    for (i=0 ; i<MAXPLAYERS ; i++)
    {
	if (playeringame[i]) 
	{ 
	    cmd = &players[i].cmd; 
 
	    memcpy (cmd, &netcmds[i][buf], sizeof(ticcmd_t)); 
 
	    if (demoplayback) 
		G_ReadDemoTiccmd (cmd); 
	    if (demorecording) 
		G_WriteDemoTiccmd (cmd);
	    
	    // check for turbo cheats
	    if (cmd->forwardmove > TURBOTHRESHOLD 
		&& !(gametic&31) && ((gametic>>5)&3) == i )
	    {
		static char turbomessage[80];
		extern char *player_names[4];
		sprintf (turbomessage, "%s is turbo!",player_names[i]);
		players[consoleplayer].message = turbomessage;
	    }
			
	    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] = rndindex; 
	    } 
	}
    }
    
    // check for special buttons
    for (i=0 ; i<MAXPLAYERS ; i++)
    {
	if (playeringame[i]) 
	{ 
	    if (players[i].cmd.buttons & BT_SPECIAL) 
	    { 
		switch (players[i].cmd.buttons & BT_SPECIALMASK) 
		{ 
		  case BTS_PAUSE: 
		    paused ^= 1; 
		    if (paused) 
			S_PauseSound (); 
		    else 
			S_ResumeSound (); 
		    break; 
					 
		  case BTS_SAVEGAME: 
		    if (!savedescription[0]) 
			strcpy (savedescription, "NET GAME"); 
		    savegameslot =  
			(players[i].cmd.buttons & BTS_SAVEMASK)>>BTS_SAVESHIFT; 
		    gameaction = ga_savegame; 
		    break; 
		} 
	    } 
	}
    }
    
    // do main actions
    switch (gamestate) 
    { 
      case GS_LEVEL: 
	P_Ticker (); 
	ST_Ticker (); 
	AM_Ticker (); 
	HU_Ticker ();            
	break; 
	 
      case GS_INTERMISSION: 
	WI_Ticker (); 
	break; 
			 
      case GS_FINALE: 
	F_Ticker (); 
	break; 
 
      case GS_DEMOSCREEN: 
	D_PageTicker (); 
	break; 
    }        
} 
 
 
//
// PLAYER STRUCTURE FUNCTIONS
// also see P_SpawnPlayer in P_Things
//

//
// G_InitPlayer 
// Called at the start.
// Called by the game initialization functions.
//
void G_InitPlayer (int player) 
{ 
    player_t*	p; 
 
    // set up the saved info         
    p = &players[player]; 
	 
    // clear everything else to defaults 
    G_PlayerReborn (player); 
	 
} 
 
 

//
// G_PlayerFinishLevel
// Can when a player completes a level.
//
void G_PlayerFinishLevel (int player) 
{ 
    player_t*	p; 
	 
    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_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]; 
    memset (p, 0, sizeof(*p)); 
 
    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 = MAXHEALTH; 
    p->readyweapon = p->pendingweapon = wp_pistol; 
    p->weaponowned[wp_fist] = true; 
    p->weaponowned[wp_pistol] = true; 
    p->ammo[am_clip] = 50; 
	 
    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); 
 
boolean
G_CheckSpot
( int		playernum,
  mapthing_t*	mthing ) 
{ 
    fixed_t		x;
    fixed_t		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; 
	 
    if (!P_CheckPosition (players[playernum].mo, x, y) ) 
	return false; 
 
    // flush an old corpse if needed 
    if (bodyqueslot >= BODYQUESIZE) 
	P_RemoveMobj (bodyque[bodyqueslot%BODYQUESIZE]); 
    bodyque[bodyqueslot%BODYQUESIZE] = players[playernum].mo; 
    bodyqueslot++; 
	
    // 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             i,j; 
    int				selections; 
	 
    selections = deathmatch_p - deathmatchstarts; 
    if (selections < 4) 
	I_Error ("Only %i deathmatch spots, 4 required", selections); 
 
    for (j=0 ; j<20 ; j++) 
    { 
	i = P_Random() % 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) 
{ 
    int                             i; 
	 
    if (!netgame)
    {
	// reload the level from scratch
	gameaction = ga_loadlevel;  
    }
    else 
    {
	// respawn at the start

	// 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[32] =
{
    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					// 31-32
};
 

//
// G_DoCompleted 
//
boolean		secretexit; 
extern char*	pagename; 
 
void G_ExitLevel (void) 
{ 
    secretexit = false; 
    gameaction = ga_completed; 
} 

// Here's for the german edition.
void G_SecretExitLevel (void) 
{ 
    // IF NO WOLF3D LEVELS, NO SECRET EXIT!
    if ( (gamemode == commercial)
      && (W_CheckNumForName("map31")<0))
	secretexit = false;
    else
	secretexit = true; 
    gameaction = ga_completed; 
} 
 
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)
	switch(gamemap)
	{
	  case 8:
	    gameaction = ga_victory;
	    return;
	  case 9: 
	    for (i=0 ; i<MAXPLAYERS ; i++) 
		players[i].didsecret = true; 
	    break;
	}
		
//#if 0  Hmmm - why?
    if ( (gamemap == 8)
	 && (gamemode != commercial) ) 
    {
	// victory 
	gameaction = ga_victory; 
	return; 
    } 
	 
    if ( (gamemap == 9)
	 && (gamemode != commercial) ) 
    {
	// exit secret level 
	for (i=0 ; i<MAXPLAYERS ; i++) 
	    players[i].didsecret = true; 
    } 
//#endif
    
	 
    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 = 35*cpars[gamemap-1]; 
    else
	wminfo.partime = 35*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);