qcsrc/server/teamplay.qc

   1 #include "teamplay.qh"
   2
   3 #include "client.qh"
   4 #include "race.qh"
   5 #include "scores.qh"
   6 #include "scores_rules.qh"
   7
   8 #include "bot/api.qh"
   9
  10 #include "command/vote.qh"
  11
  12 #include <server/mutators/_mod.qh>
  13
  14 #include "../common/deathtypes/all.qh"
  15 #include <common/gamemodes/_mod.qh>
  16 #include "../common/teams.qh"
  17
  18 /// \brief Describes a state of team balance entity.
  19 enum
  20 {
  21         TEAM_BALANCE_UNINITIALIZED, ///< The team balance has not been initialized.
  22         /// \brief TeamBalance_CheckAllowedTeams has been called.
  23         TEAM_BALANCE_TEAMS_CHECKED,
  24         /// \brief TeamBalance_GetTeamCounts has been called.
  25         TEAM_BALANCE_TEAM_COUNTS_FILLED
  26 };
  27
  28 /// \brief Indicates that the player is not allowed to join a team.
  29 const int TEAM_NOT_ALLOWED = -1;
  30
  31 .int m_team_balance_state; ///< Holds the state of the team balance entity.
  32 .entity m_team_balance_team[NUM_TEAMS]; ///< ???
  33
  34 .float m_team_score; ///< The score of the team.
  35 .int m_num_players; ///< Number of players (both humans and bots) in a team.
  36 .int m_num_bots; ///< Number of bots in a team.
  37 .int m_num_players_alive; ///< Number of alive players in a team.
  38 .int m_num_control_points; ///< Number of control points owned by a team.
  39
  40 entity g_team_entities[NUM_TEAMS]; ///< Holds global team entities.
  41
  42 STATIC_INIT(g_team_entities)
  43 {
  44         for (int i = 0; i < NUM_TEAMS; ++i)
  45         {
  46                 g_team_entities[i] = spawn();
  47         }
  48 }
  49
  50 entity Team_GetTeamFromIndex(int index)
  51 {
  52         if (!Team_IsValidIndex(index))
  53         {
  54                 LOG_FATALF("Team_GetTeamFromIndex: Index is invalid: %f", index);
  55         }
  56         return g_team_entities[index - 1];
  57 }
  58
  59 entity Team_GetTeam(int team_num)
  60 {
  61         if (!Team_IsValidTeam(team_num))
  62         {
  63                 LOG_FATALF("Team_GetTeam: Value is invalid: %f", team_num);
  64         }
  65         return g_team_entities[Team_TeamToIndex(team_num) - 1];
  66 }
  67
  68 float Team_GetTeamScore(entity team_ent)
  69 {
  70         return team_ent.m_team_score;
  71 }
  72
  73 void Team_SetTeamScore(entity team_ent, float score)
  74 {
  75         team_ent.m_team_score = score;
  76 }
  77
  78 int Team_GetNumberOfAlivePlayers(entity team_ent)
  79 {
  80         return team_ent.m_num_players_alive;
  81 }
  82
  83 void Team_SetNumberOfAlivePlayers(entity team_ent, int number)
  84 {
  85         team_ent.m_num_players_alive = number;
  86 }
  87
  88 int Team_GetNumberOfAliveTeams()
  89 {
  90         int result = 0;
  91         for (int i = 0; i < NUM_TEAMS; ++i)
  92         {
  93                 if (g_team_entities[i].m_num_players_alive > 0)
  94                 {
  95                         ++result;
  96                 }
  97         }
  98         return result;
  99 }
 100
 101 int Team_GetNumberOfControlPoints(entity team_ent)
 102 {
 103         return team_ent.m_num_control_points;
 104 }
 105
 106 void Team_SetNumberOfControlPoints(entity team_ent, int number)
 107 {
 108         team_ent.m_num_control_points = number;
 109 }
 110
 111 int Team_GetNumberOfTeamsWithControlPoints()
 112 {
 113         int result = 0;
 114         for (int i = 0; i < NUM_TEAMS; ++i)
 115         {
 116                 if (g_team_entities[i].m_num_control_points > 0)
 117                 {
 118                         ++result;
 119                 }
 120         }
 121         return result;
 122 }
 123
 124 void setcolor(entity this, int clr)
 125 {
 126 #if 0
 127         this.clientcolors = clr;
 128         this.team = (clr & 15) + 1;
 129 #else
 130         builtin_setcolor(this, clr);
 131 #endif
 132 }
 133
 134 bool Entity_HasValidTeam(entity this)
 135 {
 136         return Team_IsValidTeam(this.team);
 137 }
 138
 139 int Entity_GetTeamIndex(entity this)
 140 {
 141         return Team_TeamToIndex(this.team);
 142 }
 143
 144 entity Entity_GetTeam(entity this)
 145 {
 146         int index = Entity_GetTeamIndex(this);
 147         if (!Team_IsValidIndex(index))
 148         {
 149                 return NULL;
 150         }
 151         return Team_GetTeamFromIndex(index);
 152 }
 153
 154 void SetPlayerColors(entity player, float _color)
 155 {
 156         float pants = _color & 0x0F;
 157         float shirt = _color & 0xF0;
 158         if (teamplay)
 159         {
 160                 setcolor(player, 16 * pants + pants);
 161         }
 162         else
 163         {
 164                 setcolor(player, shirt + pants);
 165         }
 166 }
 167
 168 bool Player_SetTeamIndex(entity player, int index)
 169 {
 170         int new_team = Team_IndexToTeam(index);
 171         if (player.team == new_team)
 172         {
 173                 if (new_team != -1)
 174                 {
 175                         // This is important when players join the game and one of their
 176                         // color matches the team color while other doesn't. For example
 177                         // [BOT]Lion.
 178                         SetPlayerColors(player, new_team - 1);
 179                 }
 180                 return true;
 181         }
 182         int old_index = Team_TeamToIndex(player.team);
 183         if (MUTATOR_CALLHOOK(Player_ChangeTeam, player, old_index, index) == true)
 184         {
 185                 // Mutator has blocked team change.
 186                 return false;
 187         }
 188         if (new_team == -1)
 189         {
 190                 player.team = -1;
 191         }
 192         else
 193         {
 194                 SetPlayerColors(player, new_team - 1);
 195         }
 196         MUTATOR_CALLHOOK(Player_ChangedTeam, player, old_index, index);
 197         return true;
 198 }
 199
 200 bool SetPlayerTeam(entity player, int team_index, int type)
 201 {
 202         int old_team_index = Entity_GetTeamIndex(player);
 203         if (!Player_SetTeamIndex(player, team_index))
 204         {
 205                 return false;
 206         }
 207         LogTeamchange(player.playerid, player.team, type);
 208         if (team_index != old_team_index)
 209         {
 210                 Send_Notification(NOTIF_ALL, NULL, MSG_INFO, APP_TEAM_NUM(player.team,
 211                         INFO_JOIN_PLAY_TEAM), player.netname);
 212                 KillPlayerForTeamChange(player);
 213         }
 214         return true;
 215 }
 216
 217 bool MoveToTeam(entity client, int team_index, int type)
 218 {
 219         //PrintToChatAll(sprintf("MoveToTeam: %s, %f", client.netname, team_index));
 220         int lockteams_backup = lockteams;  // backup any team lock
 221         lockteams = 0;  // disable locked teams
 222         PlayerScore_Clear(client);
 223         if (!SetPlayerTeam(client, team_index, type))
 224         {
 225                 lockteams = lockteams_backup;  // restore the team lock
 226                 return false;
 227         }
 228         lockteams = lockteams_backup;  // restore the team lock
 229         return true;
 230 }
 231
 232 void KillPlayerForTeamChange(entity player)
 233 {
 234         if (IS_DEAD(player))
 235         {
 236                 return;
 237         }
 238         if (MUTATOR_CALLHOOK(Player_ChangeTeamKill, player) == true)
 239         {
 240                 return;
 241         }
 242         Damage(player, player, player, 100000, DEATH_TEAMCHANGE.m_id, DMG_NOWEP,
 243                 player.origin, '0 0 0');
 244 }
 245
 246 void LogTeamchange(float player_id, float team_number, int type)
 247 {
 248         if(!autocvar_sv_eventlog)
 249                 return;
 250
 251         if(player_id < 1)
 252                 return;
 253
 254         GameLogEcho(strcat(":team:", ftos(player_id), ":", ftos(team_number), ":", ftos(type)));
 255 }
 256
 257 entity TeamBalance_CheckAllowedTeams(entity for_whom)
 258 {
 259         entity balance = spawn();
 260         for (int i = 0; i < NUM_TEAMS; ++i)
 261         {
 262                 entity team_ent = balance.m_team_balance_team[i] = spawn();
 263                 team_ent.m_team_score = g_team_entities[i].m_team_score;
 264                 team_ent.m_num_players = TEAM_NOT_ALLOWED;
 265                 team_ent.m_num_bots = 0;
 266         }
 267         setthink(balance, TeamBalance_Destroy);
 268
 269         int teams_mask = 0;
 270         string teament_name = string_null;
 271         bool mutator_returnvalue = MUTATOR_CALLHOOK(TeamBalance_CheckAllowedTeams,
 272                 teams_mask, teament_name, for_whom);
 273         teams_mask = M_ARGV(0, float);
 274         teament_name = M_ARGV(1, string);
 275         if (mutator_returnvalue)
 276         {
 277                 for (int i = 0; i < NUM_TEAMS; ++i)
 278                 {
 279                         if (teams_mask & BIT(i))
 280                         {
 281                                 balance.m_team_balance_team[i].m_num_players = 0;
 282                         }
 283                 }
 284         }
 285
 286         if (teament_name)
 287         {
 288                 entity head = find(NULL, classname, teament_name);
 289                 while (head)
 290                 {
 291                         if (Team_IsValidTeam(head.team))
 292                         {
 293                                 TeamBalance_GetTeam(balance, head.team).m_num_players = 0;
 294                         }
 295                         head = find(head, classname, teament_name);
 296                 }
 297         }
 298
 299         // TODO: Balance quantity of bots across > 2 teams when bot_vs_human is set (and remove next line)
 300         if (AvailableTeams() == 2)
 301         if (autocvar_bot_vs_human && for_whom)
 302         {
 303                 if (autocvar_bot_vs_human > 0)
 304                 {
 305                         // find last team available
 306                         if (IS_BOT_CLIENT(for_whom))
 307                         {
 308                                 if (TeamBalance_IsTeamAllowedInternal(balance, 4))
 309                                 {
 310                                         TeamBalance_BanTeamsExcept(balance, 4);
 311                                 }
 312                                 else if (TeamBalance_IsTeamAllowedInternal(balance, 3))
 313                                 {
 314                                         TeamBalance_BanTeamsExcept(balance, 3);
 315                                 }
 316                                 else
 317                                 {
 318                                         TeamBalance_BanTeamsExcept(balance, 2);
 319                                 }
 320                                 // no further cases, we know at least 2 teams exist
 321                         }
 322                         else
 323                         {
 324                                 if (TeamBalance_IsTeamAllowedInternal(balance, 1))
 325                                 {
 326                                         TeamBalance_BanTeamsExcept(balance, 1);
 327                                 }
 328                                 else if (TeamBalance_IsTeamAllowedInternal(balance, 2))
 329                                 {
 330                                         TeamBalance_BanTeamsExcept(balance, 2);
 331                                 }
 332                                 else
 333                                 {
 334                                         TeamBalance_BanTeamsExcept(balance, 3);
 335                                 }
 336                                 // no further cases, bots have one of the teams
 337                         }
 338                 }
 339                 else
 340                 {
 341                         // find first team available
 342                         if (IS_BOT_CLIENT(for_whom))
 343                         {
 344                                 if (TeamBalance_IsTeamAllowedInternal(balance, 1))
 345                                 {
 346                                         TeamBalance_BanTeamsExcept(balance, 1);
 347                                 }
 348                                 else if (TeamBalance_IsTeamAllowedInternal(balance, 2))
 349                                 {
 350                                         TeamBalance_BanTeamsExcept(balance, 2);
 351                                 }
 352                                 else
 353                                 {
 354                                         TeamBalance_BanTeamsExcept(balance, 3);
 355                                 }
 356                                 // no further cases, we know at least 2 teams exist
 357                         }
 358                         else
 359                         {
 360                                 if (TeamBalance_IsTeamAllowedInternal(balance, 4))
 361                                 {
 362                                         TeamBalance_BanTeamsExcept(balance, 4);
 363                                 }
 364                                 else if (TeamBalance_IsTeamAllowedInternal(balance, 3))
 365                                 {
 366                                         TeamBalance_BanTeamsExcept(balance, 3);
 367                                 }
 368                                 else
 369                                 {
 370                                         TeamBalance_BanTeamsExcept(balance, 2);
 371                                 }
 372                                 // no further cases, bots have one of the teams
 373                         }
 374                 }
 375         }
 376
 377         if (!for_whom)
 378         {
 379                 balance.m_team_balance_state = TEAM_BALANCE_TEAMS_CHECKED;
 380                 return balance;
 381         }
 382
 383         // if player has a forced team, ONLY allow that one
 384         for (int i = 1; i <= NUM_TEAMS; ++i)
 385         {
 386                 if (for_whom.team_forced == Team_IndexToTeam(i) &&
 387                         TeamBalance_IsTeamAllowedInternal(balance, i))
 388                 {
 389                         TeamBalance_BanTeamsExcept(balance, i);
 390                 }
 391                 break;
 392         }
 393         balance.m_team_balance_state = TEAM_BALANCE_TEAMS_CHECKED;
 394         return balance;
 395 }
 396
 397 void TeamBalance_Destroy(entity balance)
 398 {
 399         if (balance == NULL)
 400         {
 401                 return;
 402         }
 403         for (int i = 0; i < NUM_TEAMS; ++i)
 404         {
 405                 delete(balance.(m_team_balance_team[i]));
 406         }
 407         delete(balance);
 408 }
 409
 410 int TeamBalance_GetAllowedTeams(entity balance)
 411 {
 412         if (balance == NULL)
 413         {
 414                 LOG_FATAL("TeamBalance_GetAllowedTeams: Team balance entity is NULL.");
 415         }
 416         if (balance.m_team_balance_state == TEAM_BALANCE_UNINITIALIZED)
 417         {
 418                 LOG_FATAL("TeamBalance_GetAllowedTeams: "
 419                         "Team balance entity is not initialized.");
 420         }
 421         int result = 0;
 422         for (int i = 1; i <= NUM_TEAMS; ++i)
 423         {
 424                 if (TeamBalance_IsTeamAllowedInternal(balance, i))
 425                 {
 426                         result |= Team_IndexToBit(i);
 427                 }
 428         }
 429         return result;
 430 }
 431
 432 bool TeamBalance_IsTeamAllowed(entity balance, int index)
 433 {
 434         if (balance == NULL)
 435         {
 436                 LOG_FATAL("TeamBalance_IsTeamAllowed: Team balance entity is NULL.");
 437         }
 438         if (balance.m_team_balance_state == TEAM_BALANCE_UNINITIALIZED)
 439         {
 440                 LOG_FATAL("TeamBalance_IsTeamAllowed: "
 441                         "Team balance entity is not initialized.");
 442         }
 443         if (!Team_IsValidIndex(index))
 444         {
 445                 LOG_FATALF("TeamBalance_IsTeamAllowed: Team index is invalid: %f",
 446                         index);
 447         }
 448         return TeamBalance_IsTeamAllowedInternal(balance, index);
 449 }
 450
 451 void TeamBalance_GetTeamCounts(entity balance, entity ignore)
 452 {
 453         if (balance == NULL)
 454         {
 455                 LOG_FATAL("TeamBalance_GetTeamCounts: Team balance entity is NULL.");
 456         }
 457         if (balance.m_team_balance_state == TEAM_BALANCE_UNINITIALIZED)
 458         {
 459                 LOG_FATAL("TeamBalance_GetTeamCounts: "
 460                         "Team balance entity is not initialized.");
 461         }
 462         if (MUTATOR_CALLHOOK(TeamBalance_GetTeamCounts) == true)
 463         {
 464                 // Mutator has overriden the configuration.
 465                 for (int i = 1; i <= NUM_TEAMS; ++i)
 466                 {
 467                         entity team_ent = TeamBalance_GetTeamFromIndex(balance, i);
 468                         if (TeamBalanceTeam_IsAllowed(team_ent))
 469                         {
 470                                 MUTATOR_CALLHOOK(TeamBalance_GetTeamCount, i, ignore);
 471                                 team_ent.m_num_players = M_ARGV(2, float);
 472                                 team_ent.m_num_bots = M_ARGV(3, float);
 473                         }
 474                 }
 475         }
 476         else
 477         {
 478                 // Manually count all players.
 479                 FOREACH_CLIENT(true,
 480                 {
 481                         if (it == ignore)
 482                         {
 483                                 continue;
 484                         }
 485                         int team_num;
 486                         if (IS_PLAYER(it) || it.caplayer)
 487                         {
 488                                 team_num = it.team;
 489                         }
 490                         else if (it.team_forced > 0)
 491                         {
 492                                 team_num = it.team_forced; // reserve the spot
 493                         }
 494                         else
 495                         {
 496                                 continue;
 497                         }
 498                         if (!Team_IsValidTeam(team_num))
 499                         {
 500                                 continue;
 501                         }
 502                         entity team_ent = TeamBalance_GetTeam(balance, team_num);
 503                         if (!TeamBalanceTeam_IsAllowed(team_ent))
 504                         {
 505                                 continue;
 506                         }
 507                         ++team_ent.m_num_players;
 508                         if (IS_BOT_CLIENT(it))
 509                         {
 510                                 ++team_ent.m_num_bots;
 511                         }
 512                 });
 513         }
 514
 515         // if the player who has a forced team has not joined yet, reserve the spot
 516         if (autocvar_g_campaign)
 517         {
 518                 if (Team_IsValidIndex(autocvar_g_campaign_forceteam))
 519                 {
 520                         entity team_ent = TeamBalance_GetTeamFromIndex(balance,
 521                                 autocvar_g_campaign_forceteam);
 522                         if (team_ent.m_num_players == team_ent.m_num_bots)
 523                         {
 524                                 ++team_ent.m_num_players;
 525                         }
 526                 }
 527         }
 528         balance.m_team_balance_state = TEAM_BALANCE_TEAM_COUNTS_FILLED;
 529 }
 530
 531 int TeamBalance_GetNumberOfPlayers(entity balance, int index)
 532 {
 533         if (balance == NULL)
 534         {
 535                 LOG_FATAL("TeamBalance_GetNumberOfPlayers: "
 536                         "Team balance entity is NULL.");
 537         }
 538         if (balance.m_team_balance_state != TEAM_BALANCE_TEAM_COUNTS_FILLED)
 539         {
 540                 LOG_FATAL("TeamBalance_GetNumberOfPlayers: "
 541                         "TeamBalance_GetTeamCounts has not been called.");
 542         }
 543         if (!Team_IsValidIndex(index))
 544         {
 545                 LOG_FATALF("TeamBalance_GetNumberOfPlayers: Team index is invalid: %f",
 546                         index);
 547         }
 548         return balance.m_team_balance_team[index - 1].m_num_players;
 549 }
 550
 551 int TeamBalance_FindBestTeam(entity balance, entity player, bool ignore_player)
 552 {
 553         if (balance == NULL)
 554         {
 555                 LOG_FATAL("TeamBalance_FindBestTeam: Team balance entity is NULL.");
 556         }
 557         if (balance.m_team_balance_state == TEAM_BALANCE_UNINITIALIZED)
 558         {
 559                 LOG_FATAL("TeamBalance_FindBestTeam: "
 560                         "Team balance entity is not initialized.");
 561         }
 562         // count how many players are in each team
 563         if (ignore_player)
 564         {
 565                 TeamBalance_GetTeamCounts(balance, player);
 566         }
 567         else
 568         {
 569                 TeamBalance_GetTeamCounts(balance, NULL);
 570         }
 571         int team_bits = TeamBalance_FindBestTeams(balance, player, true);
 572         if (team_bits == 0)
 573         {
 574                 LOG_FATALF("TeamBalance_FindBestTeam: No teams available for %s\n",
 575                         MapInfo_Type_ToString(MapInfo_CurrentGametype()));
 576         }
 577         RandomSelection_Init();
 578         for (int i = 1; i <= NUM_TEAMS; ++i)
 579         {
 580                 if (team_bits & Team_IndexToBit(i))
 581                 {
 582                         RandomSelection_AddFloat(i, 1, 1);
 583                 }
 584         }
 585         return RandomSelection_chosen_float;
 586 }
 587
 588 int TeamBalance_FindBestTeams(entity balance, entity player, bool use_score)
 589 {
 590         if (balance == NULL)
 591         {
 592                 LOG_FATAL("TeamBalance_FindBestTeams: Team balance entity is NULL.");
 593         }
 594         if (balance.m_team_balance_state != TEAM_BALANCE_TEAM_COUNTS_FILLED)
 595         {
 596                 LOG_FATAL("TeamBalance_FindBestTeams: "
 597                         "TeamBalance_GetTeamCounts has not been called.");
 598         }
 599         if (MUTATOR_CALLHOOK(TeamBalance_FindBestTeams, player) == true)
 600         {
 601                 return M_ARGV(1, float);
 602         }
 603         int team_bits = 0;
 604         int previous_team = 0;
 605         for (int i = 1; i <= NUM_TEAMS; ++i)
 606         {
 607                 if (!TeamBalance_IsTeamAllowedInternal(balance, i))
 608                 {
 609                         continue;
 610                 }
 611                 if (previous_team == 0)
 612                 {
 613                         team_bits = Team_IndexToBit(i);
 614                         previous_team = i;
 615                         continue;
 616                 }
 617                 int compare = TeamBalance_CompareTeams(balance, i, previous_team,
 618                         player, use_score);
 619                 if (compare == TEAMS_COMPARE_LESS)
 620                 {
 621                         team_bits = Team_IndexToBit(i);
 622                         previous_team = i;
 623                         continue;
 624                 }
 625                 if (compare == TEAMS_COMPARE_EQUAL)
 626                 {
 627                         team_bits |= Team_IndexToBit(i);
 628                         previous_team = i;
 629                 }
 630         }
 631         return team_bits;
 632 }
 633
 634 void TeamBalance_JoinBestTeam(entity this, bool force_best_team)
 635 {
 636         //PrintToChatAll(sprintf("JoinBestTeam: %s, %f", this.netname, force_best_team));
 637         // don't join a team if we're not playing a team game
 638         if (!teamplay)
 639         {
 640                 return;
 641         }
 642
 643         // find out what teams are available
 644         entity balance = TeamBalance_CheckAllowedTeams(this);
 645
 646         // if we don't care what team they end up on, put them on whatever team they entered as.
 647         // if they're not on a valid team, then let other code put them on the smallest team
 648         if (!force_best_team)
 649         {
 650                 int selected_team_index = -1;
 651                 for (int i = 1; i <= NUM_TEAMS; ++i)
 652                 {
 653                         if (TeamBalance_IsTeamAllowedInternal(balance, i) &&
 654                                 (Team_TeamToIndex(this.team) == i))
 655                         {
 656                                 selected_team_index = i;
 657                                 break;
 658                         }
 659                 }
 660
 661                 if (Team_IsValidIndex(selected_team_index))
 662                 {
 663                         SetPlayerTeam(this, selected_team_index, TEAM_CHANGE_AUTO_RELAXED);
 664                         TeamBalance_Destroy(balance);
 665                         return;
 666                 }
 667         }
 668         // otherwise end up on the smallest team (handled below)
 669         if (this.bot_forced_team)
 670         {
 671                 TeamBalance_Destroy(balance);
 672                 return;
 673         }
 674         int best_team_index = TeamBalance_FindBestTeam(balance, this, true);
 675         int old_team_index = Team_TeamToIndex(this.team);
 676         TeamBalance_Destroy(balance);
 677         PlayerScore_Clear(this);
 678         if (!SetPlayerTeam(this, best_team_index, TEAM_CHANGE_AUTO))
 679         {
 680                 return;
 681         }
 682         if ((old_team_index != -1) && !IS_BOT_CLIENT(this))
 683         {
 684                 TeamBalance_AutoBalanceBots(best_team_index, old_team_index);
 685         }
 686 }
 687
 688 int TeamBalance_CompareTeams(entity balance, int team_index_a, int team_index_b,
 689         entity player, bool use_score)
 690 {
 691         if (balance == NULL)
 692         {
 693                 LOG_FATAL("TeamBalance_CompareTeams: Team balance entity is NULL.");
 694         }
 695         if (balance.m_team_balance_state != TEAM_BALANCE_TEAM_COUNTS_FILLED)
 696         {
 697                 LOG_FATAL("TeamBalance_CompareTeams: "
 698                         "TeamBalance_GetTeamCounts has not been called.");
 699         }
 700         if (!Team_IsValidIndex(team_index_a))
 701         {
 702                 LOG_FATALF("TeamBalance_CompareTeams: team_index_a is invalid: %f",
 703                         team_index_a);
 704         }
 705         if (!Team_IsValidIndex(team_index_b))
 706         {
 707                 LOG_FATALF("TeamBalance_CompareTeams: team_index_b is invalid: %f",
 708                         team_index_b);
 709         }
 710         if (team_index_a == team_index_b)
 711         {
 712                 return TEAMS_COMPARE_EQUAL;
 713         }
 714         entity team_a = TeamBalance_GetTeamFromIndex(balance, team_index_a);
 715         entity team_b = TeamBalance_GetTeamFromIndex(balance, team_index_b);
 716         return TeamBalance_CompareTeamsInternal(team_a, team_b, player, use_score);
 717 }
 718
 719 void TeamBalance_AutoBalanceBots(int source_team_index,
 720         int destination_team_index)
 721 {
 722         if (!Team_IsValidIndex(source_team_index))
 723         {
 724                 LOG_WARNF("TeamBalance_AutoBalanceBots: "
 725                         "Source team index is invalid: %f", source_team_index);
 726                 return;
 727         }
 728         if (!Team_IsValidIndex(destination_team_index))
 729         {
 730                 LOG_WARNF("TeamBalance_AutoBalanceBots: "
 731                         "Destination team index is invalid: %f", destination_team_index);
 732                 return;
 733         }
 734         if (!autocvar_g_balance_teams ||
 735                 !autocvar_g_balance_teams_prevent_imbalance)
 736         {
 737                 return;
 738         }
 739         entity balance = TeamBalance_CheckAllowedTeams(NULL);
 740         TeamBalance_GetTeamCounts(balance, NULL);
 741         entity source_team = TeamBalance_GetTeamFromIndex(balance,
 742                 source_team_index);
 743         entity destination_team = TeamBalance_GetTeamFromIndex(balance,
 744                 destination_team_index);
 745         if ((source_team.m_num_bots == 0) || (source_team.m_num_players <=
 746                 destination_team.m_num_players))
 747         {
 748                 TeamBalance_Destroy(balance);
 749                 return;
 750         }
 751         TeamBalance_Destroy(balance);
 752         entity lowest_bot = NULL;
 753         if (MUTATOR_CALLHOOK(TeamBalance_GetPlayerForTeamSwitch, source_team_index,
 754                 destination_team_index, true))
 755         {
 756                 lowest_bot = M_ARGV(3, entity);
 757         }
 758         else
 759         {
 760                 float lowest_score = FLOAT_MAX;
 761                 FOREACH_CLIENT(IS_BOT_CLIENT(it) && (Entity_GetTeamIndex(it) ==
 762                         source_team_index),
 763                 {
 764                         float temp_score = PlayerScore_Get(it, SP_SCORE);
 765                         if (temp_score >= lowest_score)
 766                         {
 767                                 continue;
 768                         }
 769                         balance = TeamBalance_CheckAllowedTeams(it);
 770                         if (TeamBalance_IsTeamAllowed(balance, destination_team_index))
 771                         {
 772                                 lowest_bot = it;
 773                                 lowest_score = temp_score;
 774                         }
 775                         TeamBalance_Destroy(balance);
 776                 });
 777         }
 778         if (lowest_bot == NULL)
 779         {
 780                 return;
 781         }
 782         if (!Player_SetTeamIndex(lowest_bot, destination_team_index))
 783         {
 784                 return;
 785         }
 786         KillPlayerForTeamChange(lowest_bot);
 787 }
 788
 789 bool TeamBalance_IsTeamAllowedInternal(entity balance, int index)
 790 {
 791         return balance.m_team_balance_team[index - 1].m_num_players !=
 792                 TEAM_NOT_ALLOWED;
 793 }
 794
 795 void TeamBalance_BanTeamsExcept(entity balance, int index)
 796 {
 797         for (int i = 1; i <= NUM_TEAMS; ++i)
 798         {
 799                 if (i != index)
 800                 {
 801                         balance.m_team_balance_team[i - 1].m_num_players = TEAM_NOT_ALLOWED;
 802                 }
 803         }
 804 }
 805
 806 entity TeamBalance_GetTeamFromIndex(entity balance, int index)
 807 {
 808         if (!Team_IsValidIndex(index))
 809         {
 810                 LOG_FATALF("TeamBalance_GetTeamFromIndex: Index is invalid: %f", index);
 811         }
 812         return balance.m_team_balance_team[index - 1];
 813 }
 814
 815 entity TeamBalance_GetTeam(entity balance, int team_num)
 816 {
 817         return TeamBalance_GetTeamFromIndex(balance, Team_TeamToIndex(team_num));
 818 }
 819
 820 bool TeamBalanceTeam_IsAllowed(entity team_ent)
 821 {
 822         return team_ent.m_num_players != TEAM_NOT_ALLOWED;
 823 }
 824
 825 int TeamBalanceTeam_GetNumberOfPlayers(entity team_ent)
 826 {
 827         return team_ent.m_num_players;
 828 }
 829
 830 int TeamBalanceTeam_GetNumberOfBots(entity team_ent)
 831 {
 832         return team_ent.m_num_bots;
 833 }
 834
 835 int TeamBalance_CompareTeamsInternal(entity team_a, entity team_b,
 836         entity player, bool use_score)
 837 {
 838         if (team_a == team_b)
 839         {
 840                 return TEAMS_COMPARE_EQUAL;
 841         }
 842         if (!TeamBalanceTeam_IsAllowed(team_a) ||
 843                 !TeamBalanceTeam_IsAllowed(team_b))
 844         {
 845                 return TEAMS_COMPARE_INVALID;
 846         }
 847         int num_players_team_a = team_a.m_num_players;
 848         int num_players_team_b = team_b.m_num_players;
 849         if (IS_REAL_CLIENT(player) && bots_would_leave)
 850         {
 851                 num_players_team_a -= team_a.m_num_bots;
 852                 num_players_team_b -= team_b.m_num_bots;
 853         }
 854         if (num_players_team_a < num_players_team_b)
 855         {
 856                 return TEAMS_COMPARE_LESS;
 857         }
 858         if (num_players_team_a > num_players_team_b)
 859         {
 860                 return TEAMS_COMPARE_GREATER;
 861         }
 862         if (!use_score)
 863         {
 864                 return TEAMS_COMPARE_EQUAL;
 865         }
 866         if (team_a.m_team_score < team_b.m_team_score)
 867         {
 868                 return TEAMS_COMPARE_LESS;
 869         }
 870         if (team_a.m_team_score > team_b.m_team_score)
 871         {
 872                 return TEAMS_COMPARE_GREATER;
 873         }
 874         return TEAMS_COMPARE_EQUAL;
 875 }
 876
 877 // Called when the player connects or when they change their color with "color"
 878 // command.
 879 void SV_ChangeTeam(entity this, float _color)
 880 {
 881         //PrintToChatAll(sprintf("SV_ChangeTeam: %s, %f", this.netname, _color));
 882
 883         // in normal deathmatch we can just apply the color and we're done
 884         if(!teamplay)
 885                 SetPlayerColors(this, _color);
 886
 887         if(!IS_CLIENT(this))
 888         {
 889                 // since this is an engine function, and gamecode doesn't have any calls earlier than this, do the connecting message here
 890                 Send_Notification(NOTIF_ALL, NULL, MSG_INFO, INFO_CONNECTING, this.netname);
 891                 return;
 892         }
 893
 894         if(!teamplay)
 895                 return;
 896
 897         int source_color, destination_color;
 898         int source_team_index, destination_team_index;
 899
 900         source_color = this.clientcolors & 0x0F;
 901         destination_color = _color & 0x0F;
 902
 903         source_team_index = Team_TeamToIndex(source_color + 1);
 904         destination_team_index = Team_TeamToIndex(destination_color + 1);
 905
 906         if (destination_team_index == -1)
 907         {
 908                 return;
 909         }
 910
 911         entity balance = TeamBalance_CheckAllowedTeams(this);
 912
 913         if (destination_team_index == 1 && !TeamBalance_IsTeamAllowedInternal(
 914                 balance, 1))
 915         {
 916                 destination_team_index = 4;
 917         }
 918         if (destination_team_index == 4 && !TeamBalance_IsTeamAllowedInternal(
 919                 balance, 4))
 920         {
 921                 destination_team_index = 3;
 922         }
 923         if (destination_team_index == 3 && !TeamBalance_IsTeamAllowedInternal(
 924                 balance, 3))
 925         {
 926                 destination_team_index = 2;
 927         }
 928         if (destination_team_index == 2 && !TeamBalance_IsTeamAllowedInternal(
 929                 balance, 2))
 930         {
 931                 destination_team_index = 1;
 932         }
 933
 934         // not changing teams
 935         if (source_color == destination_color)
 936         {
 937                 SetPlayerTeam(this, destination_team_index, TEAM_CHANGE_MANUAL);
 938                 TeamBalance_Destroy(balance);
 939                 return;
 940         }
 941
 942         if((autocvar_g_campaign) || (autocvar_g_changeteam_banned && CS(this).wasplayer)) {
 943                 Send_Notification(NOTIF_ONE, this, MSG_INFO, INFO_TEAMCHANGE_NOTALLOWED);
 944                 return; // changing teams is not allowed
 945         }
 946
 947         // autocvar_g_balance_teams_prevent_imbalance only makes sense if autocvar_g_balance_teams is on, as it makes the team selection dialog pointless
 948         if (autocvar_g_balance_teams && autocvar_g_balance_teams_prevent_imbalance)
 949         {
 950                 TeamBalance_GetTeamCounts(balance, this);
 951                 if ((Team_IndexToBit(destination_team_index) &
 952                         TeamBalance_FindBestTeams(balance, this, false)) == 0)
 953                 {
 954                         Send_Notification(NOTIF_ONE, this, MSG_INFO, INFO_TEAMCHANGE_LARGERTEAM);
 955                         TeamBalance_Destroy(balance);
 956                         return;
 957                 }
 958         }
 959         TeamBalance_Destroy(balance);
 960         if (IS_PLAYER(this) && source_team_index != destination_team_index)
 961         {
 962                 // reduce frags during a team change
 963                 PlayerScore_Clear(this);
 964         }
 965         if (!SetPlayerTeam(this, destination_team_index, TEAM_CHANGE_MANUAL))
 966         {
 967                 return;
 968         }
 969         TeamBalance_AutoBalanceBots(destination_team_index, source_team_index);
 970 }