g_cmds.c

quakeIII源码这个不用我多说吧

		// force them to spectators if there aren't any spots free
		team = TEAM_FREE;
	}

	// override decision if limiting the players
	if ( (g_gametype.integer == GT_TOURNAMENT)
		&& level.numNonSpectatorClients >= 2 ) {
		team = TEAM_SPECTATOR;
	} else if ( g_maxGameClients.integer > 0 && 
		level.numNonSpectatorClients >= g_maxGameClients.integer ) {
		team = TEAM_SPECTATOR;
	}

	//
	// decide if we will allow the change
	//
	oldTeam = client->sess.sessionTeam;
	if ( team == oldTeam && team != TEAM_SPECTATOR ) {
		return;
	}

	//
	// execute the team change
	//

	// if the player was dead leave the body
	if ( client->ps.stats[STAT_HEALTH] <= 0 ) {
		CopyToBodyQue(ent);
	}

	// he starts at 'base'
	client->pers.teamState.state = TEAM_BEGIN;
	if ( oldTeam != TEAM_SPECTATOR ) {
		// Kill him (makes sure he loses flags, etc)
		ent->flags &= ~FL_GODMODE;
		ent->client->ps.stats[STAT_HEALTH] = ent->health = 0;
		player_die (ent, ent, ent, 100000, MOD_SUICIDE);

	}
	// they go to the end of the line for tournements
	if ( team == TEAM_SPECTATOR ) {
		client->sess.spectatorTime = level.time;
	}

	client->sess.sessionTeam = team;
	client->sess.spectatorState = specState;
	client->sess.spectatorClient = specClient;

	client->sess.teamLeader = qfalse;
	if ( team == TEAM_RED || team == TEAM_BLUE ) {
		teamLeader = TeamLeader( team );
		// if there is no team leader or the team leader is a bot and this client is not a bot
		if ( teamLeader == -1 || ( !(g_entities[clientNum].r.svFlags & SVF_BOT) && (g_entities[teamLeader].r.svFlags & SVF_BOT) ) ) {
			SetLeader( team, clientNum );
		}
	}
	// make sure there is a team leader on the team the player came from
	if ( oldTeam == TEAM_RED || oldTeam == TEAM_BLUE ) {
		CheckTeamLeader( oldTeam );
	}

	BroadcastTeamChange( client, oldTeam );

	// get and distribute relevent paramters
	ClientUserinfoChanged( clientNum );

	ClientBegin( clientNum );
}

/*
=================
StopFollowing

If the client being followed leaves the game, or you just want to drop
to free floating spectator mode
=================
*/
void StopFollowing( gentity_t *ent ) {
	ent->client->ps.persistant[ PERS_TEAM ] = TEAM_SPECTATOR;	
	ent->client->sess.sessionTeam = TEAM_SPECTATOR;	
	ent->client->sess.spectatorState = SPECTATOR_FREE;
	ent->client->ps.pm_flags &= ~PMF_FOLLOW;
	ent->r.svFlags &= ~SVF_BOT;
	ent->client->ps.clientNum = ent - g_entities;
}

/*
=================
Cmd_Team_f
=================
*/
void Cmd_Team_f( gentity_t *ent ) {
	int			oldTeam;
	char		s[MAX_TOKEN_CHARS];

	if ( trap_Argc() != 2 ) {
		oldTeam = ent->client->sess.sessionTeam;
		switch ( oldTeam ) {
		case TEAM_BLUE:
			trap_SendServerCommand( ent-g_entities, "print \"Blue team\n\"" );
			break;
		case TEAM_RED:
			trap_SendServerCommand( ent-g_entities, "print \"Red team\n\"" );
			break;
		case TEAM_FREE:
			trap_SendServerCommand( ent-g_entities, "print \"Free team\n\"" );
			break;
		case TEAM_SPECTATOR:
			trap_SendServerCommand( ent-g_entities, "print \"Spectator team\n\"" );
			break;
		}
		return;
	}

	if ( ent->client->switchTeamTime > level.time ) {
		trap_SendServerCommand( ent-g_entities, "print \"May not switch teams more than once per 5 seconds.\n\"" );
		return;
	}

	// if they are playing a tournement game, count as a loss
	if ( (g_gametype.integer == GT_TOURNAMENT )
		&& ent->client->sess.sessionTeam == TEAM_FREE ) {
		ent->client->sess.losses++;
	}

	trap_Argv( 1, s, sizeof( s ) );

	SetTeam( ent, s );

	ent->client->switchTeamTime = level.time + 5000;
}


/*
=================
Cmd_Follow_f
=================
*/
void Cmd_Follow_f( gentity_t *ent ) {
	int		i;
	char	arg[MAX_TOKEN_CHARS];

	if ( trap_Argc() != 2 ) {
		if ( ent->client->sess.spectatorState == SPECTATOR_FOLLOW ) {
			StopFollowing( ent );
		}
		return;
	}

	trap_Argv( 1, arg, sizeof( arg ) );
	i = ClientNumberFromString( ent, arg );
	if ( i == -1 ) {
		return;
	}

	// can't follow self
	if ( &level.clients[ i ] == ent->client ) {
		return;
	}

	// can't follow another spectator
	if ( level.clients[ i ].sess.sessionTeam == TEAM_SPECTATOR ) {
		return;
	}

	// if they are playing a tournement game, count as a loss
	if ( (g_gametype.integer == GT_TOURNAMENT )
		&& ent->client->sess.sessionTeam == TEAM_FREE ) {
		ent->client->sess.losses++;
	}

	// first set them to spectator
	if ( ent->client->sess.sessionTeam != TEAM_SPECTATOR ) {
		SetTeam( ent, "spectator" );
	}

	ent->client->sess.spectatorState = SPECTATOR_FOLLOW;
	ent->client->sess.spectatorClient = i;
}

/*
=================
Cmd_FollowCycle_f
=================
*/
void Cmd_FollowCycle_f( gentity_t *ent, int dir ) {
	int		clientnum;
	int		original;

	// if they are playing a tournement game, count as a loss
	if ( (g_gametype.integer == GT_TOURNAMENT )
		&& ent->client->sess.sessionTeam == TEAM_FREE ) {
		ent->client->sess.losses++;
	}
	// first set them to spectator
	if ( ent->client->sess.spectatorState == SPECTATOR_NOT ) {
		SetTeam( ent, "spectator" );
	}

	if ( dir != 1 && dir != -1 ) {
		G_Error( "Cmd_FollowCycle_f: bad dir %i", dir );
	}

	clientnum = ent->client->sess.spectatorClient;
	original = clientnum;
	do {
		clientnum += dir;
		if ( clientnum >= level.maxclients ) {
			clientnum = 0;
		}
		if ( clientnum < 0 ) {
			clientnum = level.maxclients - 1;
		}

		// can only follow connected clients
		if ( level.clients[ clientnum ].pers.connected != CON_CONNECTED ) {
			continue;
		}

		// can't follow another spectator
		if ( level.clients[ clientnum ].sess.sessionTeam == TEAM_SPECTATOR ) {
			continue;
		}

		// this is good, we can use it
		ent->client->sess.spectatorClient = clientnum;
		ent->client->sess.spectatorState = SPECTATOR_FOLLOW;
		return;
	} while ( clientnum != original );

	// leave it where it was
}


/*
==================
G_Say
==================
*/

static void G_SayTo( gentity_t *ent, gentity_t *other, int mode, int color, const char *name, const char *message ) {
	if (!other) {
		return;
	}
	if (!other->inuse) {
		return;
	}
	if (!other->client) {
		return;
	}
	if ( other->client->pers.connected != CON_CONNECTED ) {
		return;
	}
	if ( mode == SAY_TEAM  && !OnSameTeam(ent, other) ) {
		return;
	}
	// no chatting to players in tournements
	if ( (g_gametype.integer == GT_TOURNAMENT )
		&& other->client->sess.sessionTeam == TEAM_FREE
		&& ent->client->sess.sessionTeam != TEAM_FREE ) {
		return;
	}

	trap_SendServerCommand( other-g_entities, va("%s \"%s%c%c%s\"", 
		mode == SAY_TEAM ? "tchat" : "chat",
		name, Q_COLOR_ESCAPE, color, message));
}

#define EC		"\x19"

void G_Say( gentity_t *ent, gentity_t *target, int mode, const char *chatText ) {
	int			j;
	gentity_t	*other;
	int			color;
	char		name[64];
	// don't let text be too long for malicious reasons
	char		text[MAX_SAY_TEXT];
	char		location[64];

	if ( g_gametype.integer < GT_TEAM && mode == SAY_TEAM ) {
		mode = SAY_ALL;
	}

	switch ( mode ) {
	default:
	case SAY_ALL:
		G_LogPrintf( "say: %s: %s\n", ent->client->pers.netname, chatText );
		Com_sprintf (name, sizeof(name), "%s%c%c"EC": ", ent->client->pers.netname, Q_COLOR_ESCAPE, COLOR_WHITE );
		color = COLOR_GREEN;
		break;
	case SAY_TEAM:
		G_LogPrintf( "sayteam: %s: %s\n", ent->client->pers.netname, chatText );
		if (Team_GetLocationMsg(ent, location, sizeof(location)))
			Com_sprintf (name, sizeof(name), EC"(%s%c%c"EC") (%s)"EC": ", 
				ent->client->pers.netname, Q_COLOR_ESCAPE, COLOR_WHITE, location);
		else
			Com_sprintf (name, sizeof(name), EC"(%s%c%c"EC")"EC": ", 
				ent->client->pers.netname, Q_COLOR_ESCAPE, COLOR_WHITE );
		color = COLOR_CYAN;
		break;
	case SAY_TELL:
		if (target && g_gametype.integer >= GT_TEAM &&
			target->client->sess.sessionTeam == ent->client->sess.sessionTeam &&
			Team_GetLocationMsg(ent, location, sizeof(location)))
			Com_sprintf (name, sizeof(name), EC"[%s%c%c"EC"] (%s)"EC": ", ent->client->pers.netname, Q_COLOR_ESCAPE, COLOR_WHITE, location );
		else
			Com_sprintf (name, sizeof(name), EC"[%s%c%c"EC"]"EC": ", ent->client->pers.netname, Q_COLOR_ESCAPE, COLOR_WHITE );
		color = COLOR_MAGENTA;
		break;
	}

	Q_strncpyz( text, chatText, sizeof(text) );

	if ( target ) {
		G_SayTo( ent, target, mode, color, name, text );
		return;
	}

	// echo the text to the console
	if ( g_dedicated.integer ) {
		G_Printf( "%s%s\n", name, text);
	}

	// send it to all the apropriate clients
	for (j = 0; j < level.maxclients; j++) {
		other = &g_entities[j];
		G_SayTo( ent, other, mode, color, name, text );
	}
}


/*
==================
Cmd_Say_f
==================
*/
static void Cmd_Say_f( gentity_t *ent, int mode, qboolean arg0 ) {
	char		*p;

	if ( trap_Argc () < 2 && !arg0 ) {
		return;
	}

	if (arg0)
	{
		p = ConcatArgs( 0 );
	}
	else
	{
		p = ConcatArgs( 1 );
	}

	G_Say( ent, NULL, mode, p );
}

/*
==================
Cmd_Tell_f
==================
*/
static void Cmd_Tell_f( gentity_t *ent ) {
	int			targetNum;
	gentity_t	*target;
	char		*p;
	char		arg[MAX_TOKEN_CHARS];

	if ( trap_Argc () < 2 ) {
		return;
	}

	trap_Argv( 1, arg, sizeof( arg ) );
	targetNum = atoi( arg );
	if ( targetNum < 0 || targetNum >= level.maxclients ) {
		return;
	}

	target = &g_entities[targetNum];
	if ( !target || !target->inuse || !target->client ) {
		return;
	}

	p = ConcatArgs( 2 );

	G_LogPrintf( "tell: %s to %s: %s\n", ent->client->pers.netname, target->client->pers.netname, p );
	G_Say( ent, target, SAY_TELL, p );
	// don't tell to the player self if it was already directed to this player
	// also don't send the chat back to a bot
	if ( ent != target && !(ent->r.svFlags & SVF_BOT)) {
		G_Say( ent, ent, SAY_TELL, p );
	}
}


static void G_VoiceTo( gentity_t *ent, gentity_t *other, int mode, const char *id, qboolean voiceonly ) {
	int color;
	char *cmd;

	if (!other) {
		return;
	}
	if (!other->inuse) {
		return;
	}
	if (!other->client) {
		return;
	}
	if ( mode == SAY_TEAM && !OnSameTeam(ent, other) ) {
		return;
	}
	// no chatting to players in tournements
	if ( (g_gametype.integer == GT_TOURNAMENT )) {
		return;
	}

	if (mode == SAY_TEAM) {
		color = COLOR_CYAN;
		cmd = "vtchat";
	}
	else if (mode == SAY_TELL) {
		color = COLOR_MAGENTA;
		cmd = "vtell";
	}
	else {
		color = COLOR_GREEN;
		cmd = "vchat";
	}

	trap_SendServerCommand( other-g_entities, va("%s %d %d %d %s", cmd, voiceonly, ent->s.number, color, id));
}

void G_Voice( gentity_t *ent, gentity_t *target, int mode, const char *id, qboolean voiceonly ) {
	int			j;
	gentity_t	*other;

	if ( g_gametype.integer < GT_TEAM && mode == SAY_TEAM ) {
		mode = SAY_ALL;
	}

	if ( target ) {
		G_VoiceTo( ent, target, mode, id, voiceonly );
		return;
	}

	// echo the text to the console
	if ( g_dedicated.integer ) {
		G_Printf( "voice: %s %s\n", ent->client->pers.netname, id);
	}

	// send it to all the apropriate clients
	for (j = 0; j < level.maxclients; j++) {
		other = &g_entities[j];
		G_VoiceTo( ent, other, mode, id, voiceonly );
	}
}

/*
==================
Cmd_Voice_f
==================
*/
static void Cmd_Voice_f( gentity_t *ent, int mode, qboolean arg0, qboolean voiceonly ) {
	char		*p;

	if ( trap_Argc () < 2 && !arg0 ) {
		return;
	}

	if (arg0)
	{
		p = ConcatArgs( 0 );
	}
	else
	{
		p = ConcatArgs( 1 );
	}

	G_Voice( ent, NULL, mode, p, voiceonly );
}

/*
==================
Cmd_VoiceTell_f
==================
*/
static void Cmd_VoiceTell_f( gentity_t *ent, qboolean voiceonly ) {
	int			targetNum;
	gentity_t	*target;
	char		*id;
	char		arg[MAX_TOKEN_CHARS];

	if ( trap_Argc () < 2 ) {
		return;
	}

	trap_Argv( 1, arg, sizeof( arg ) );
	targetNum = atoi( arg );
	if ( targetNum < 0 || targetNum >= level.maxclients ) {
		return;
	}

	target = &g_entities[targetNum];
	if ( !target || !target->inuse || !target->client ) {
		return;
	}

	id = ConcatArgs( 2 );

	G_LogPrintf( "vtell: %s to %s: %s\n", ent->client->pers.netname, target->client->pers.netname, id );
	G_Voice( ent, target, SAY_TELL, id, voiceonly );
	// don't tell to the player self if it was already directed to this player
	// also don't send the chat back to a bot
	if ( ent != target && !(ent->r.svFlags & SVF_BOT)) {
		G_Voice( ent, ent, SAY_TELL, id, voiceonly );
	}
}


/*
==================
Cmd_VoiceTaunt_f
==================
*/
static void Cmd_VoiceTaunt_f( gentity_t *ent ) {
	gentity_t *who;
	int i;

	if (!ent->client) {
		return;
	}

	// insult someone who just killed you
	if (ent->enemy && ent->enemy->client && ent->enemy->client->lastkilled_client == ent->s.number) {
		// i am a dead corpse
		if (!(ent->enemy->r.svFlags & SVF_BOT)) {
			G_Voice( ent, ent->enemy, SAY_TELL, VOICECHAT_DEATHINSULT, qfalse );
		}
		if (!(ent->r.svFlags & SVF_BOT)) {
			G_Voice( ent, ent,        SAY_TELL, VOICECHAT_DEATHINSULT, qfalse );
		}
		ent->enemy = NULL;
		return;
	}
	// insult someone you just killed
	if (ent->client->lastkilled_client >= 0 && ent->client->lastkilled_client != ent->s.number) {
		who = g_entities + ent->client->lastkilled_client;
		if (who->client) {
			// who is the person I just killed
			if (who->client->lasthurt_mod == MOD_GAUNTLET) {
				if (!(who->r.svFlags & SVF_BOT)) {
					G_Voice( ent, who, SAY_TELL, VOICECHAT_KILLGAUNTLET, qfalse );	// and I killed them with a gauntlet
				}
				if (!(ent->r.svFlags & SVF_BOT)) {
					G_Voice( ent, ent, SAY_TELL, VOICECHAT_KILLGAUNTLET, qfalse );
				}
			} else {
				if (!(who->r.svFlags & SVF_BOT)) {
					G_Voice( ent, who, SAY_TELL, VOICECHAT_KILLINSULT, qfalse );	// and I killed them with something else
				}
				if (!(ent->r.svFlags & SVF_BOT)) {
					G_Voice( ent, ent, SAY_TELL, VOICECHAT_KILLINSULT, qfalse );
				}
			}
			ent->client->lastkilled_client = -1;
			return;
		}
	}

	if (g_gametype.integer >= GT_TEAM) {