g_client.c

quakeIII源码这个不用我多说吧

to the server machine, but qfalse on map changes and tournement
restarts.
============
*/
char *ClientConnect( int clientNum, qboolean firstTime, qboolean isBot ) {
	char		*value;
//	char		*areabits;
	gclient_t	*client;
	char		userinfo[MAX_INFO_STRING];
	gentity_t	*ent;

	ent = &g_entities[ clientNum ];

	trap_GetUserinfo( clientNum, userinfo, sizeof( userinfo ) );

 	// IP filtering
 	// https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=500
 	// recommanding PB based IP / GUID banning, the builtin system is pretty limited
 	// check to see if they are on the banned IP list
	value = Info_ValueForKey (userinfo, "ip");
	if ( G_FilterPacket( value ) ) {
		return "You are banned from this server.";
	}

  // we don't check password for bots and local client
  // NOTE: local client <-> "ip" "localhost"
  //   this means this client is not running in our current process
	if ( !( ent->r.svFlags & SVF_BOT ) && (strcmp(value, "localhost") != 0)) {
		// check for a password
		value = Info_ValueForKey (userinfo, "password");
		if ( g_password.string[0] && Q_stricmp( g_password.string, "none" ) &&
			strcmp( g_password.string, value) != 0) {
			return "Invalid password";
		}
	}

	// they can connect
	ent->client = level.clients + clientNum;
	client = ent->client;

//	areabits = client->areabits;

	memset( client, 0, sizeof(*client) );

	client->pers.connected = CON_CONNECTING;

	// read or initialize the session data
	if ( firstTime || level.newSession ) {
		G_InitSessionData( client, userinfo );
	}
	G_ReadSessionData( client );

	if( isBot ) {
		ent->r.svFlags |= SVF_BOT;
		ent->inuse = qtrue;
		if( !G_BotConnect( clientNum, !firstTime ) ) {
			return "BotConnectfailed";
		}
	}

	// get and distribute relevent paramters
	G_LogPrintf( "ClientConnect: %i\n", clientNum );
	ClientUserinfoChanged( clientNum );

	// don't do the "xxx connected" messages if they were caried over from previous level
	if ( firstTime ) {
		trap_SendServerCommand( -1, va("print \"%s" S_COLOR_WHITE " connected\n\"", client->pers.netname) );
	}

	if ( g_gametype.integer >= GT_TEAM &&
		client->sess.sessionTeam != TEAM_SPECTATOR ) {
		BroadcastTeamChange( client, -1 );
	}

	// count current clients and rank for scoreboard
	CalculateRanks();

	// for statistics
//	client->areabits = areabits;
//	if ( !client->areabits )
//		client->areabits = G_Alloc( (trap_AAS_PointReachabilityAreaIndex( NULL ) + 7) / 8 );

	return NULL;
}

/*
===========
ClientBegin

called when a client has finished connecting, and is ready
to be placed into the level.  This will happen every level load,
and on transition between teams, but doesn't happen on respawns
============
*/
void ClientBegin( int clientNum ) {
	gentity_t	*ent;
	gclient_t	*client;
	gentity_t	*tent;
	int			flags;

	ent = g_entities + clientNum;

	client = level.clients + clientNum;

	if ( ent->r.linked ) {
		trap_UnlinkEntity( ent );
	}
	G_InitGentity( ent );
	ent->touch = 0;
	ent->pain = 0;
	ent->client = client;

	client->pers.connected = CON_CONNECTED;
	client->pers.enterTime = level.time;
	client->pers.teamState.state = TEAM_BEGIN;

	// save eflags around this, because changing teams will
	// cause this to happen with a valid entity, and we
	// want to make sure the teleport bit is set right
	// so the viewpoint doesn't interpolate through the
	// world to the new position
	flags = client->ps.eFlags;
	memset( &client->ps, 0, sizeof( client->ps ) );
	client->ps.eFlags = flags;

	// locate ent at a spawn point
	ClientSpawn( ent );

	if ( client->sess.sessionTeam != TEAM_SPECTATOR ) {
		// send event
		tent = G_TempEntity( ent->client->ps.origin, EV_PLAYER_TELEPORT_IN );
		tent->s.clientNum = ent->s.clientNum;

		if ( g_gametype.integer != GT_TOURNAMENT  ) {
			trap_SendServerCommand( -1, va("print \"%s" S_COLOR_WHITE " entered the game\n\"", client->pers.netname) );
		}
	}
	G_LogPrintf( "ClientBegin: %i\n", clientNum );

	// count current clients and rank for scoreboard
	CalculateRanks();
}

/*
===========
ClientSpawn

Called every time a client is placed fresh in the world:
after the first ClientBegin, and after each respawn
Initializes all non-persistant parts of playerState
============
*/
void ClientSpawn(gentity_t *ent) {
	int		index;
	vec3_t	spawn_origin, spawn_angles;
	gclient_t	*client;
	int		i;
	clientPersistant_t	saved;
	clientSession_t		savedSess;
	int		persistant[MAX_PERSISTANT];
	gentity_t	*spawnPoint;
	int		flags;
	int		savedPing;
//	char	*savedAreaBits;
	int		accuracy_hits, accuracy_shots;
	int		eventSequence;
	char	userinfo[MAX_INFO_STRING];

	index = ent - g_entities;
	client = ent->client;

	// find a spawn point
	// do it before setting health back up, so farthest
	// ranging doesn't count this client
	if ( client->sess.sessionTeam == TEAM_SPECTATOR ) {
		spawnPoint = SelectSpectatorSpawnPoint ( 
						spawn_origin, spawn_angles);
	} else if (g_gametype.integer >= GT_CTF ) {
		// all base oriented team games use the CTF spawn points
		spawnPoint = SelectCTFSpawnPoint ( 
						client->sess.sessionTeam, 
						client->pers.teamState.state, 
						spawn_origin, spawn_angles);
	} else {
		do {
			// the first spawn should be at a good looking spot
			if ( !client->pers.initialSpawn && client->pers.localClient ) {
				client->pers.initialSpawn = qtrue;
				spawnPoint = SelectInitialSpawnPoint( spawn_origin, spawn_angles );
			} else {
				// don't spawn near existing origin if possible
				spawnPoint = SelectSpawnPoint ( 
					client->ps.origin, 
					spawn_origin, spawn_angles);
			}

			// Tim needs to prevent bots from spawning at the initial point
			// on q3dm0...
			if ( ( spawnPoint->flags & FL_NO_BOTS ) && ( ent->r.svFlags & SVF_BOT ) ) {
				continue;	// try again
			}
			// just to be symetric, we have a nohumans option...
			if ( ( spawnPoint->flags & FL_NO_HUMANS ) && !( ent->r.svFlags & SVF_BOT ) ) {
				continue;	// try again
			}

			break;

		} while ( 1 );
	}
	client->pers.teamState.state = TEAM_ACTIVE;

	// always clear the kamikaze flag
	ent->s.eFlags &= ~EF_KAMIKAZE;

	// toggle the teleport bit so the client knows to not lerp
	// and never clear the voted flag
	flags = ent->client->ps.eFlags & (EF_TELEPORT_BIT | EF_VOTED | EF_TEAMVOTED);
	flags ^= EF_TELEPORT_BIT;

	// clear everything but the persistant data

	saved = client->pers;
	savedSess = client->sess;
	savedPing = client->ps.ping;
//	savedAreaBits = client->areabits;
	accuracy_hits = client->accuracy_hits;
	accuracy_shots = client->accuracy_shots;
	for ( i = 0 ; i < MAX_PERSISTANT ; i++ ) {
		persistant[i] = client->ps.persistant[i];
	}
	eventSequence = client->ps.eventSequence;

	memset (client, 0, sizeof(*client)); // bk FIXME: Com_Memset?

	client->pers = saved;
	client->sess = savedSess;
	client->ps.ping = savedPing;
//	client->areabits = savedAreaBits;
	client->accuracy_hits = accuracy_hits;
	client->accuracy_shots = accuracy_shots;
	client->lastkilled_client = -1;

	for ( i = 0 ; i < MAX_PERSISTANT ; i++ ) {
		client->ps.persistant[i] = persistant[i];
	}
	client->ps.eventSequence = eventSequence;
	// increment the spawncount so the client will detect the respawn
	client->ps.persistant[PERS_SPAWN_COUNT]++;
	client->ps.persistant[PERS_TEAM] = client->sess.sessionTeam;

	client->airOutTime = level.time + 12000;

	trap_GetUserinfo( index, userinfo, sizeof(userinfo) );
	// set max health
	client->pers.maxHealth = atoi( Info_ValueForKey( userinfo, "handicap" ) );
	if ( client->pers.maxHealth < 1 || client->pers.maxHealth > 100 ) {
		client->pers.maxHealth = 100;
	}
	// clear entity values
	client->ps.stats[STAT_MAX_HEALTH] = client->pers.maxHealth;
	client->ps.eFlags = flags;

	ent->s.groundEntityNum = ENTITYNUM_NONE;
	ent->client = &level.clients[index];
	ent->takedamage = qtrue;
	ent->inuse = qtrue;
	ent->classname = "player";
	ent->r.contents = CONTENTS_BODY;
	ent->clipmask = MASK_PLAYERSOLID;
	ent->die = player_die;
	ent->waterlevel = 0;
	ent->watertype = 0;
	ent->flags = 0;
	
	VectorCopy (playerMins, ent->r.mins);
	VectorCopy (playerMaxs, ent->r.maxs);

	client->ps.clientNum = index;

	client->ps.stats[STAT_WEAPONS] = ( 1 << WP_MACHINEGUN );
	if ( g_gametype.integer == GT_TEAM ) {
		client->ps.ammo[WP_MACHINEGUN] = 50;
	} else {
		client->ps.ammo[WP_MACHINEGUN] = 100;
	}

	client->ps.stats[STAT_WEAPONS] |= ( 1 << WP_GAUNTLET );
	client->ps.ammo[WP_GAUNTLET] = -1;
	client->ps.ammo[WP_GRAPPLING_HOOK] = -1;

	// health will count down towards max_health
	ent->health = client->ps.stats[STAT_HEALTH] = client->ps.stats[STAT_MAX_HEALTH] + 25;

	G_SetOrigin( ent, spawn_origin );
	VectorCopy( spawn_origin, client->ps.origin );

	// the respawned flag will be cleared after the attack and jump keys come up
	client->ps.pm_flags |= PMF_RESPAWNED;

	trap_GetUsercmd( client - level.clients, &ent->client->pers.cmd );
	SetClientViewAngle( ent, spawn_angles );

	if ( ent->client->sess.sessionTeam == TEAM_SPECTATOR ) {

	} else {
		G_KillBox( ent );
		trap_LinkEntity (ent);

		// force the base weapon up
		client->ps.weapon = WP_MACHINEGUN;
		client->ps.weaponstate = WEAPON_READY;

	}

	// don't allow full run speed for a bit
	client->ps.pm_flags |= PMF_TIME_KNOCKBACK;
	client->ps.pm_time = 100;

	client->respawnTime = level.time;
	client->inactivityTime = level.time + g_inactivity.integer * 1000;
	client->latched_buttons = 0;

	// set default animations
	client->ps.torsoAnim = TORSO_STAND;
	client->ps.legsAnim = LEGS_IDLE;

	if ( level.intermissiontime ) {
		MoveClientToIntermission( ent );
	} else {
		// fire the targets of the spawn point
		G_UseTargets( spawnPoint, ent );

		// select the highest weapon number available, after any
		// spawn given items have fired
		client->ps.weapon = 1;
		for ( i = WP_NUM_WEAPONS - 1 ; i > 0 ; i-- ) {
			if ( client->ps.stats[STAT_WEAPONS] & ( 1 << i ) ) {
				client->ps.weapon = i;
				break;
			}
		}
	}

	// run a client frame to drop exactly to the floor,
	// initialize animations and other things
	client->ps.commandTime = level.time - 100;
	ent->client->pers.cmd.serverTime = level.time;
	ClientThink( ent-g_entities );

	// positively link the client, even if the command times are weird
	if ( ent->client->sess.sessionTeam != TEAM_SPECTATOR ) {
		BG_PlayerStateToEntityState( &client->ps, &ent->s, qtrue );
		VectorCopy( ent->client->ps.origin, ent->r.currentOrigin );
		trap_LinkEntity( ent );
	}

	// run the presend to set anything else
	ClientEndFrame( ent );

	// clear entity state values
	BG_PlayerStateToEntityState( &client->ps, &ent->s, qtrue );
}


/*
===========
ClientDisconnect

Called when a player drops from the server.
Will not be called between levels.

This should NOT be called directly by any game logic,
call trap_DropClient(), which will call this and do
server system housekeeping.
============
*/
void ClientDisconnect( int clientNum ) {
	gentity_t	*ent;
	gentity_t	*tent;
	int			i;

	// cleanup if we are kicking a bot that
	// hasn't spawned yet
	G_RemoveQueuedBotBegin( clientNum );

	ent = g_entities + clientNum;
	if ( !ent->client ) {
		return;
	}

	// stop any following clients
	for ( i = 0 ; i < level.maxclients ; i++ ) {
		if ( level.clients[i].sess.sessionTeam == TEAM_SPECTATOR
			&& level.clients[i].sess.spectatorState == SPECTATOR_FOLLOW
			&& level.clients[i].sess.spectatorClient == clientNum ) {
			StopFollowing( &g_entities[i] );
		}
	}

	// send effect if they were completely connected
	if ( ent->client->pers.connected == CON_CONNECTED 
		&& ent->client->sess.sessionTeam != TEAM_SPECTATOR ) {
		tent = G_TempEntity( ent->client->ps.origin, EV_PLAYER_TELEPORT_OUT );
		tent->s.clientNum = ent->s.clientNum;

		// They don't get to take powerups with them!
		// Especially important for stuff like CTF flags
		TossClientItems( ent );
#ifdef MISSIONPACK
		TossClientPersistantPowerups( ent );
		if( g_gametype.integer == GT_HARVESTER ) {
			TossClientCubes( ent );
		}
#endif

	}

	G_LogPrintf( "ClientDisconnect: %i\n", clientNum );

	// if we are playing in tourney mode and losing, give a win to the other player
	if ( (g_gametype.integer == GT_TOURNAMENT )
		&& !level.intermissiontime
		&& !level.warmupTime && level.sortedClients[1] == clientNum ) {
		level.clients[ level.sortedClients[0] ].sess.wins++;
		ClientUserinfoChanged( level.sortedClients[0] );
	}

	trap_UnlinkEntity (ent);
	ent->s.modelindex = 0;
	ent->inuse = qfalse;
	ent->classname = "disconnected";
	ent->client->pers.connected = CON_DISCONNECTED;
	ent->client->ps.persistant[PERS_TEAM] = TEAM_FREE;
	ent->client->sess.sessionTeam = TEAM_FREE;

	trap_SetConfigstring( CS_PLAYERS + clientNum, "");

	CalculateRanks();

	if ( ent->r.svFlags & SVF_BOT ) {
		BotAIShutdownClient( clientNum, qfalse );
	}
}