g_main.c

quakeIII源码这个不用我多说吧

/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena source code 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.

Quake III Arena source code 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 Foobar; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
//

#include "g_local.h"

level_locals_t	level;

typedef struct {
	vmCvar_t	*vmCvar;
	char		*cvarName;
	char		*defaultString;
	int			cvarFlags;
	int			modificationCount;  // for tracking changes
	qboolean	trackChange;	    // track this variable, and announce if changed
  qboolean teamShader;        // track and if changed, update shader state
} cvarTable_t;

gentity_t		g_entities[MAX_GENTITIES];
gclient_t		g_clients[MAX_CLIENTS];

vmCvar_t	g_gametype;
vmCvar_t	g_dmflags;
vmCvar_t	g_fraglimit;
vmCvar_t	g_timelimit;
vmCvar_t	g_capturelimit;
vmCvar_t	g_friendlyFire;
vmCvar_t	g_password;
vmCvar_t	g_needpass;
vmCvar_t	g_maxclients;
vmCvar_t	g_maxGameClients;
vmCvar_t	g_dedicated;
vmCvar_t	g_speed;
vmCvar_t	g_gravity;
vmCvar_t	g_cheats;
vmCvar_t	g_knockback;
vmCvar_t	g_quadfactor;
vmCvar_t	g_forcerespawn;
vmCvar_t	g_inactivity;
vmCvar_t	g_debugMove;
vmCvar_t	g_debugDamage;
vmCvar_t	g_debugAlloc;
vmCvar_t	g_weaponRespawn;
vmCvar_t	g_weaponTeamRespawn;
vmCvar_t	g_motd;
vmCvar_t	g_synchronousClients;
vmCvar_t	g_warmup;
vmCvar_t	g_doWarmup;
vmCvar_t	g_restarted;
vmCvar_t	g_log;
vmCvar_t	g_logSync;
vmCvar_t	g_blood;
vmCvar_t	g_podiumDist;
vmCvar_t	g_podiumDrop;
vmCvar_t	g_allowVote;
vmCvar_t	g_teamAutoJoin;
vmCvar_t	g_teamForceBalance;
vmCvar_t	g_banIPs;
vmCvar_t	g_filterBan;
vmCvar_t	g_smoothClients;
vmCvar_t	pmove_fixed;
vmCvar_t	pmove_msec;
vmCvar_t	g_rankings;
vmCvar_t	g_listEntity;
#ifdef MISSIONPACK
vmCvar_t	g_obeliskHealth;
vmCvar_t	g_obeliskRegenPeriod;
vmCvar_t	g_obeliskRegenAmount;
vmCvar_t	g_obeliskRespawnDelay;
vmCvar_t	g_cubeTimeout;
vmCvar_t	g_redteam;
vmCvar_t	g_blueteam;
vmCvar_t	g_singlePlayer;
vmCvar_t	g_enableDust;
vmCvar_t	g_enableBreath;
vmCvar_t	g_proxMineTimeout;
#endif

// bk001129 - made static to avoid aliasing
static cvarTable_t		gameCvarTable[] = {
	// don't override the cheat state set by the system
	{ &g_cheats, "sv_cheats", "", 0, 0, qfalse },

	// noset vars
	{ NULL, "gamename", GAMEVERSION , CVAR_SERVERINFO | CVAR_ROM, 0, qfalse  },
	{ NULL, "gamedate", __DATE__ , CVAR_ROM, 0, qfalse  },
	{ &g_restarted, "g_restarted", "0", CVAR_ROM, 0, qfalse  },
	{ NULL, "sv_mapname", "", CVAR_SERVERINFO | CVAR_ROM, 0, qfalse  },

	// latched vars
	{ &g_gametype, "g_gametype", "0", CVAR_SERVERINFO | CVAR_USERINFO | CVAR_LATCH, 0, qfalse  },

	{ &g_maxclients, "sv_maxclients", "8", CVAR_SERVERINFO | CVAR_LATCH | CVAR_ARCHIVE, 0, qfalse  },
	{ &g_maxGameClients, "g_maxGameClients", "0", CVAR_SERVERINFO | CVAR_LATCH | CVAR_ARCHIVE, 0, qfalse  },

	// change anytime vars
	{ &g_dmflags, "dmflags", "0", CVAR_SERVERINFO | CVAR_ARCHIVE, 0, qtrue  },
	{ &g_fraglimit, "fraglimit", "20", CVAR_SERVERINFO | CVAR_ARCHIVE | CVAR_NORESTART, 0, qtrue },
	{ &g_timelimit, "timelimit", "0", CVAR_SERVERINFO | CVAR_ARCHIVE | CVAR_NORESTART, 0, qtrue },
	{ &g_capturelimit, "capturelimit", "8", CVAR_SERVERINFO | CVAR_ARCHIVE | CVAR_NORESTART, 0, qtrue },

	{ &g_synchronousClients, "g_synchronousClients", "0", CVAR_SYSTEMINFO, 0, qfalse  },

	{ &g_friendlyFire, "g_friendlyFire", "0", CVAR_ARCHIVE, 0, qtrue  },

	{ &g_teamAutoJoin, "g_teamAutoJoin", "0", CVAR_ARCHIVE  },
	{ &g_teamForceBalance, "g_teamForceBalance", "0", CVAR_ARCHIVE  },

	{ &g_warmup, "g_warmup", "20", CVAR_ARCHIVE, 0, qtrue  },
	{ &g_doWarmup, "g_doWarmup", "0", 0, 0, qtrue  },
	{ &g_log, "g_log", "games.log", CVAR_ARCHIVE, 0, qfalse  },
	{ &g_logSync, "g_logSync", "0", CVAR_ARCHIVE, 0, qfalse  },

	{ &g_password, "g_password", "", CVAR_USERINFO, 0, qfalse  },

	{ &g_banIPs, "g_banIPs", "", CVAR_ARCHIVE, 0, qfalse  },
	{ &g_filterBan, "g_filterBan", "1", CVAR_ARCHIVE, 0, qfalse  },

	{ &g_needpass, "g_needpass", "0", CVAR_SERVERINFO | CVAR_ROM, 0, qfalse },

	{ &g_dedicated, "dedicated", "0", 0, 0, qfalse  },

	{ &g_speed, "g_speed", "320", 0, 0, qtrue  },
	{ &g_gravity, "g_gravity", "800", 0, 0, qtrue  },
	{ &g_knockback, "g_knockback", "1000", 0, 0, qtrue  },
	{ &g_quadfactor, "g_quadfactor", "3", 0, 0, qtrue  },
	{ &g_weaponRespawn, "g_weaponrespawn", "5", 0, 0, qtrue  },
	{ &g_weaponTeamRespawn, "g_weaponTeamRespawn", "30", 0, 0, qtrue },
	{ &g_forcerespawn, "g_forcerespawn", "20", 0, 0, qtrue },
	{ &g_inactivity, "g_inactivity", "0", 0, 0, qtrue },
	{ &g_debugMove, "g_debugMove", "0", 0, 0, qfalse },
	{ &g_debugDamage, "g_debugDamage", "0", 0, 0, qfalse },
	{ &g_debugAlloc, "g_debugAlloc", "0", 0, 0, qfalse },
	{ &g_motd, "g_motd", "", 0, 0, qfalse },
	{ &g_blood, "com_blood", "1", 0, 0, qfalse },

	{ &g_podiumDist, "g_podiumDist", "80", 0, 0, qfalse },
	{ &g_podiumDrop, "g_podiumDrop", "70", 0, 0, qfalse },

	{ &g_allowVote, "g_allowVote", "1", CVAR_ARCHIVE, 0, qfalse },
	{ &g_listEntity, "g_listEntity", "0", 0, 0, qfalse },

#ifdef MISSIONPACK
	{ &g_obeliskHealth, "g_obeliskHealth", "2500", 0, 0, qfalse },
	{ &g_obeliskRegenPeriod, "g_obeliskRegenPeriod", "1", 0, 0, qfalse },
	{ &g_obeliskRegenAmount, "g_obeliskRegenAmount", "15", 0, 0, qfalse },
	{ &g_obeliskRespawnDelay, "g_obeliskRespawnDelay", "10", CVAR_SERVERINFO, 0, qfalse },

	{ &g_cubeTimeout, "g_cubeTimeout", "30", 0, 0, qfalse },
	{ &g_redteam, "g_redteam", "Stroggs", CVAR_ARCHIVE | CVAR_SERVERINFO | CVAR_USERINFO , 0, qtrue, qtrue },
	{ &g_blueteam, "g_blueteam", "Pagans", CVAR_ARCHIVE | CVAR_SERVERINFO | CVAR_USERINFO , 0, qtrue, qtrue  },
	{ &g_singlePlayer, "ui_singlePlayerActive", "", 0, 0, qfalse, qfalse  },

	{ &g_enableDust, "g_enableDust", "0", CVAR_SERVERINFO, 0, qtrue, qfalse },
	{ &g_enableBreath, "g_enableBreath", "0", CVAR_SERVERINFO, 0, qtrue, qfalse },
	{ &g_proxMineTimeout, "g_proxMineTimeout", "20000", 0, 0, qfalse },
#endif
	{ &g_smoothClients, "g_smoothClients", "1", 0, 0, qfalse},
	{ &pmove_fixed, "pmove_fixed", "0", CVAR_SYSTEMINFO, 0, qfalse},
	{ &pmove_msec, "pmove_msec", "8", CVAR_SYSTEMINFO, 0, qfalse},

	{ &g_rankings, "g_rankings", "0", 0, 0, qfalse}

};

// bk001129 - made static to avoid aliasing
static int gameCvarTableSize = sizeof( gameCvarTable ) / sizeof( gameCvarTable[0] );


void G_InitGame( int levelTime, int randomSeed, int restart );
void G_RunFrame( int levelTime );
void G_ShutdownGame( int restart );
void CheckExitRules( void );


/*
================
vmMain

This is the only way control passes into the module.
This must be the very first function compiled into the .q3vm file
================
*/
int vmMain( int command, int arg0, int arg1, int arg2, int arg3, int arg4, int arg5, int arg6, int arg7, int arg8, int arg9, int arg10, int arg11  ) {
	switch ( command ) {
	case GAME_INIT:
		G_InitGame( arg0, arg1, arg2 );
		return 0;
	case GAME_SHUTDOWN:
		G_ShutdownGame( arg0 );
		return 0;
	case GAME_CLIENT_CONNECT:
		return (int)ClientConnect( arg0, arg1, arg2 );
	case GAME_CLIENT_THINK:
		ClientThink( arg0 );
		return 0;
	case GAME_CLIENT_USERINFO_CHANGED:
		ClientUserinfoChanged( arg0 );
		return 0;
	case GAME_CLIENT_DISCONNECT:
		ClientDisconnect( arg0 );
		return 0;
	case GAME_CLIENT_BEGIN:
		ClientBegin( arg0 );
		return 0;
	case GAME_CLIENT_COMMAND:
		ClientCommand( arg0 );
		return 0;
	case GAME_RUN_FRAME:
		G_RunFrame( arg0 );
		return 0;
	case GAME_CONSOLE_COMMAND:
		return ConsoleCommand();
	case BOTAI_START_FRAME:
		return BotAIStartFrame( arg0 );
	}

	return -1;
}


void QDECL G_Printf( const char *fmt, ... ) {
	va_list		argptr;
	char		text[1024];

	va_start (argptr, fmt);
	vsprintf (text, fmt, argptr);
	va_end (argptr);

	trap_Printf( text );
}

void QDECL G_Error( const char *fmt, ... ) {
	va_list		argptr;
	char		text[1024];

	va_start (argptr, fmt);
	vsprintf (text, fmt, argptr);
	va_end (argptr);

	trap_Error( text );
}

/*
================
G_FindTeams

Chain together all entities with a matching team field.
Entity teams are used for item groups and multi-entity mover groups.

All but the first will have the FL_TEAMSLAVE flag set and teammaster field set
All but the last will have the teamchain field set to the next one
================
*/
void G_FindTeams( void ) {
	gentity_t	*e, *e2;
	int		i, j;
	int		c, c2;

	c = 0;
	c2 = 0;
	for ( i=1, e=g_entities+i ; i < level.num_entities ; i++,e++ ){
		if (!e->inuse)
			continue;
		if (!e->team)
			continue;
		if (e->flags & FL_TEAMSLAVE)
			continue;
		e->teammaster = e;
		c++;
		c2++;
		for (j=i+1, e2=e+1 ; j < level.num_entities ; j++,e2++)
		{
			if (!e2->inuse)
				continue;
			if (!e2->team)
				continue;
			if (e2->flags & FL_TEAMSLAVE)
				continue;
			if (!strcmp(e->team, e2->team))
			{
				c2++;
				e2->teamchain = e->teamchain;
				e->teamchain = e2;
				e2->teammaster = e;
				e2->flags |= FL_TEAMSLAVE;

				// make sure that targets only point at the master
				if ( e2->targetname ) {
					e->targetname = e2->targetname;
					e2->targetname = NULL;
				}
			}
		}
	}

	G_Printf ("%i teams with %i entities\n", c, c2);
}

void G_RemapTeamShaders() {
#ifdef MISSIONPACK
	char string[1024];
	float f = level.time * 0.001;
	Com_sprintf( string, sizeof(string), "team_icon/%s_red", g_redteam.string );
	AddRemap("textures/ctf2/redteam01", string, f); 
	AddRemap("textures/ctf2/redteam02", string, f); 
	Com_sprintf( string, sizeof(string), "team_icon/%s_blue", g_blueteam.string );
	AddRemap("textures/ctf2/blueteam01", string, f); 
	AddRemap("textures/ctf2/blueteam02", string, f); 
	trap_SetConfigstring(CS_SHADERSTATE, BuildShaderStateConfig());
#endif
}


/*
=================
G_RegisterCvars
=================
*/
void G_RegisterCvars( void ) {
	int			i;
	cvarTable_t	*cv;
	qboolean remapped = qfalse;

	for ( i = 0, cv = gameCvarTable ; i < gameCvarTableSize ; i++, cv++ ) {
		trap_Cvar_Register( cv->vmCvar, cv->cvarName,
			cv->defaultString, cv->cvarFlags );
		if ( cv->vmCvar )
			cv->modificationCount = cv->vmCvar->modificationCount;

		if (cv->teamShader) {
			remapped = qtrue;
		}
	}

	if (remapped) {
		G_RemapTeamShaders();
	}

	// check some things
	if ( g_gametype.integer < 0 || g_gametype.integer >= GT_MAX_GAME_TYPE ) {
		G_Printf( "g_gametype %i is out of range, defaulting to 0\n", g_gametype.integer );
		trap_Cvar_Set( "g_gametype", "0" );
	}

	level.warmupModificationCount = g_warmup.modificationCount;
}

/*
=================
G_UpdateCvars
=================
*/
void G_UpdateCvars( void ) {
	int			i;
	cvarTable_t	*cv;
	qboolean remapped = qfalse;

	for ( i = 0, cv = gameCvarTable ; i < gameCvarTableSize ; i++, cv++ ) {
		if ( cv->vmCvar ) {
			trap_Cvar_Update( cv->vmCvar );

			if ( cv->modificationCount != cv->vmCvar->modificationCount ) {
				cv->modificationCount = cv->vmCvar->modificationCount;

				if ( cv->trackChange ) {
					trap_SendServerCommand( -1, va("print \"Server: %s changed to %s\n\"", 
						cv->cvarName, cv->vmCvar->string ) );
				}

				if (cv->teamShader) {
					remapped = qtrue;
				}
			}
		}
	}

	if (remapped) {
		G_RemapTeamShaders();
	}
}

/*
============
G_InitGame

============
*/
void G_InitGame( int levelTime, int randomSeed, int restart ) {
	int					i;

	G_Printf ("------- Game Initialization -------\n");
	G_Printf ("gamename: %s\n", GAMEVERSION);
	G_Printf ("gamedate: %s\n", __DATE__);

	srand( randomSeed );

	G_RegisterCvars();

	G_ProcessIPBans();

	G_InitMemory();

	// set some level globals
	memset( &level, 0, sizeof( level ) );
	level.time = levelTime;
	level.startTime = levelTime;

	level.snd_fry = G_SoundIndex("sound/player/fry.wav");	// FIXME standing in lava / slime

	if ( g_gametype.integer != GT_SINGLE_PLAYER && g_log.string[0] ) {
		if ( g_logSync.integer ) {
			trap_FS_FOpenFile( g_log.string, &level.logFile, FS_APPEND_SYNC );
		} else {
			trap_FS_FOpenFile( g_log.string, &level.logFile, FS_APPEND );
		}
		if ( !level.logFile ) {
			G_Printf( "WARNING: Couldn't open logfile: %s\n", g_log.string );
		} else {
			char	serverinfo[MAX_INFO_STRING];

			trap_GetServerinfo( serverinfo, sizeof( serverinfo ) );

			G_LogPrintf("------------------------------------------------------------\n" );
			G_LogPrintf("InitGame: %s\n", serverinfo );
		}
	} else {
		G_Printf( "Not logging to disk.\n" );
	}

	G_InitWorldSession();

	// initialize all entities for this game
	memset( g_entities, 0, MAX_GENTITIES * sizeof(g_entities[0]) );
	level.gentities = g_entities;

	// initialize all clients for this game
	level.maxclients = g_maxclients.integer;
	memset( g_clients, 0, MAX_CLIENTS * sizeof(g_clients[0]) );
	level.clients = g_clients;