company_cmd.cpp

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/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "stdafx.h"
#include "company_base.h"
#include "company_func.h"
#include "company_gui.h"
#include "core/backup_type.hpp"
#include "town.h"
#include "news_func.h"
#include "command_func.h"
#include "network/network.h"
#include "network/network_func.h"
#include "network/network_base.h"
#include "network/network_admin.h"
#include "ai/ai.hpp"
#include "ai/ai_config.hpp"
#include "company_manager_face.h"
#include "window_func.h"
#include "strings_func.h"
#include "sound_func.h"
#include "rail.h"
#include "core/pool_func.hpp"
#include "settings_func.h"
#include "vehicle_base.h"
#include "vehicle_func.h"
#include "smallmap_gui.h"
#include "game/game.hpp"
#include "goal_base.h"
#include "story_base.h"
#include "widgets/statusbar_widget.h"
#include "company_cmd.h"
#include "timer/timer.h"
#include "timer/timer_game_economy.h"
#include "timer/timer_game_tick.h"
 
#include "table/strings.h"
 
#include "safeguards.h"
 
void ClearEnginesHiddenFlagOfCompany(CompanyID cid);
void UpdateObjectColours(const Company *c);
 
CompanyID _local_company;   
CompanyID _current_company; 
Colours _company_colours[MAX_COMPANIES];  
CompanyManagerFace _company_manager_face; 
uint _cur_company_tick_index;             
 
CompanyPool _company_pool("Company"); 
INSTANTIATE_POOL_METHODS(Company)
 
 
Company::Company(uint16_t name_1, bool is_ai)
{
  this->name_1 = name_1;
  this->location_of_HQ = INVALID_TILE;
  this->is_ai = is_ai;
  this->terraform_limit    = (uint32_t)_settings_game.construction.terraform_frame_burst << 16;
  this->clear_limit        = (uint32_t)_settings_game.construction.clear_frame_burst << 16;
  this->tree_limit         = (uint32_t)_settings_game.construction.tree_frame_burst << 16;
  this->build_object_limit = (uint32_t)_settings_game.construction.build_object_frame_burst << 16;
 
  InvalidateWindowData(WC_PERFORMANCE_DETAIL, 0, INVALID_COMPANY);
}
 
Company::~Company()
{
  if (CleaningPool()) return;
 
  CloseCompanyWindows(this->index);
}
 
void Company::PostDestructor(size_t index)
{
  InvalidateWindowData(WC_GRAPH_LEGEND, 0, (int)index);
  InvalidateWindowData(WC_PERFORMANCE_DETAIL, 0, (int)index);
  InvalidateWindowData(WC_COMPANY_LEAGUE, 0, 0);
  InvalidateWindowData(WC_LINKGRAPH_LEGEND, 0);
  /* If the currently shown error message has this company in it, then close it. */
  InvalidateWindowData(WC_ERRMSG, 0);
}
 
Money Company::GetMaxLoan() const
{
  if (this->max_loan == COMPANY_MAX_LOAN_DEFAULT) return _economy.max_loan;
  return this->max_loan;
}
 
void SetLocalCompany(CompanyID new_company)
{
  /* company could also be COMPANY_SPECTATOR or OWNER_NONE */
  assert(Company::IsValidID(new_company) || new_company == COMPANY_SPECTATOR || new_company == OWNER_NONE);
 
  /* If actually changing to another company, several windows need closing */
  bool switching_company = _local_company != new_company;
 
  /* Delete the chat window, if you were team chatting. */
  if (switching_company) InvalidateWindowData(WC_SEND_NETWORK_MSG, DESTTYPE_TEAM, _local_company);
 
  assert(IsLocalCompany());
 
  _current_company = _local_company = new_company;
 
  if (switching_company) {
    InvalidateWindowClassesData(WC_COMPANY);
    /* Delete any construction windows... */
    CloseConstructionWindows();
  }
 
  /* ... and redraw the whole screen. */
  MarkWholeScreenDirty();
  InvalidateWindowClassesData(WC_SIGN_LIST, -1);
  InvalidateWindowClassesData(WC_GOALS_LIST);
}
 
TextColour GetDrawStringCompanyColour(CompanyID company)
{
  if (!Company::IsValidID(company)) return (TextColour)_colour_gradient[COLOUR_WHITE][4] | TC_IS_PALETTE_COLOUR;
  return (TextColour)_colour_gradient[_company_colours[company]][4] | TC_IS_PALETTE_COLOUR;
}
 
void DrawCompanyIcon(CompanyID c, int x, int y)
{
  DrawSprite(SPR_COMPANY_ICON, COMPANY_SPRITE_COLOUR(c), x, y);
}
 
static bool IsValidCompanyManagerFace(CompanyManagerFace cmf)
{
  if (!AreCompanyManagerFaceBitsValid(cmf, CMFV_GEN_ETHN, GE_WM)) return false;
 
  GenderEthnicity ge   = (GenderEthnicity)GetCompanyManagerFaceBits(cmf, CMFV_GEN_ETHN, GE_WM);
  bool has_moustache   = !HasBit(ge, GENDER_FEMALE) && GetCompanyManagerFaceBits(cmf, CMFV_HAS_MOUSTACHE,   ge) != 0;
  bool has_tie_earring = !HasBit(ge, GENDER_FEMALE) || GetCompanyManagerFaceBits(cmf, CMFV_HAS_TIE_EARRING, ge) != 0;
  bool has_glasses     = GetCompanyManagerFaceBits(cmf, CMFV_HAS_GLASSES, ge) != 0;
 
  if (!AreCompanyManagerFaceBitsValid(cmf, CMFV_EYE_COLOUR, ge)) return false;
  for (CompanyManagerFaceVariable cmfv = CMFV_CHEEKS; cmfv < CMFV_END; cmfv++) {
    switch (cmfv) {
      case CMFV_MOUSTACHE:   if (!has_moustache)   continue; break;
      case CMFV_LIPS:
      case CMFV_NOSE:        if (has_moustache)    continue; break;
      case CMFV_TIE_EARRING: if (!has_tie_earring) continue; break;
      case CMFV_GLASSES:     if (!has_glasses)     continue; break;
      default: break;
    }
    if (!AreCompanyManagerFaceBitsValid(cmf, cmfv, ge)) return false;
  }
 
  return true;
}
 
void InvalidateCompanyWindows(const Company *company)
{
  CompanyID cid = company->index;
 
  if (cid == _local_company) SetWindowWidgetDirty(WC_STATUS_BAR, 0, WID_S_RIGHT);
  SetWindowDirty(WC_FINANCES, cid);
}
 
Money GetAvailableMoney(CompanyID company)
{
  if (_settings_game.difficulty.infinite_money) return INT64_MAX;
  if (!Company::IsValidID(company)) return INT64_MAX;
  return Company::Get(company)->money;
}
 
Money GetAvailableMoneyForCommand()
{
  return GetAvailableMoney(_current_company);
}
 
bool CheckCompanyHasMoney(CommandCost &cost)
{
  if (cost.GetCost() <= 0) return true;
  if (_settings_game.difficulty.infinite_money) return true;
 
  const Company *c = Company::GetIfValid(_current_company);
  if (c != nullptr && cost.GetCost() > c->money) {
    SetDParam(0, cost.GetCost());
    cost.MakeError(STR_ERROR_NOT_ENOUGH_CASH_REQUIRES_CURRENCY);
    return false;
  }
  return true;
}
 
static void SubtractMoneyFromAnyCompany(Company *c, const CommandCost &cost)
{
  if (cost.GetCost() == 0) return;
  assert(cost.GetExpensesType() != INVALID_EXPENSES);
 
  c->money -= cost.GetCost();
  c->yearly_expenses[0][cost.GetExpensesType()] += cost.GetCost();
 
  if (HasBit(1 << EXPENSES_TRAIN_REVENUE    |
             1 << EXPENSES_ROADVEH_REVENUE  |
             1 << EXPENSES_AIRCRAFT_REVENUE |
             1 << EXPENSES_SHIP_REVENUE, cost.GetExpensesType())) {
    c->cur_economy.income -= cost.GetCost();
  } else if (HasBit(1 << EXPENSES_TRAIN_RUN    |
                    1 << EXPENSES_ROADVEH_RUN  |
                    1 << EXPENSES_AIRCRAFT_RUN |
                    1 << EXPENSES_SHIP_RUN     |
                    1 << EXPENSES_PROPERTY     |
                    1 << EXPENSES_LOAN_INTEREST, cost.GetExpensesType())) {
    c->cur_economy.expenses -= cost.GetCost();
  }
 
  InvalidateCompanyWindows(c);
}
 
void SubtractMoneyFromCompany(const CommandCost &cost)
{
  Company *c = Company::GetIfValid(_current_company);
  if (c != nullptr) SubtractMoneyFromAnyCompany(c, cost);
}
 
void SubtractMoneyFromCompanyFract(CompanyID company, const CommandCost &cst)
{
  Company *c = Company::Get(company);
  byte m = c->money_fraction;
  Money cost = cst.GetCost();
 
  c->money_fraction = m - (byte)cost;
  cost >>= 8;
  if (c->money_fraction > m) cost++;
  if (cost != 0) SubtractMoneyFromAnyCompany(c, CommandCost(cst.GetExpensesType(), cost));
}
 
static constexpr void UpdateLandscapingLimit(uint32_t &limit, uint64_t per_64k_frames, uint64_t burst)
{
  limit = static_cast<uint32_t>(std::min<uint64_t>(limit + per_64k_frames, burst << 16));
}
 
void UpdateLandscapingLimits()
{
  for (Company *c : Company::Iterate()) {
    UpdateLandscapingLimit(c->terraform_limit,    _settings_game.construction.terraform_per_64k_frames,    _settings_game.construction.terraform_frame_burst);
    UpdateLandscapingLimit(c->clear_limit,        _settings_game.construction.clear_per_64k_frames,        _settings_game.construction.clear_frame_burst);
    UpdateLandscapingLimit(c->tree_limit,         _settings_game.construction.tree_per_64k_frames,         _settings_game.construction.tree_frame_burst);
    UpdateLandscapingLimit(c->build_object_limit, _settings_game.construction.build_object_per_64k_frames, _settings_game.construction.build_object_frame_burst);
  }
}
 
void SetDParamsForOwnedBy(Owner owner, TileIndex tile)
{
  SetDParam(OWNED_BY_OWNER_IN_PARAMETERS_OFFSET, owner);
 
  if (owner != OWNER_TOWN) {
    if (!Company::IsValidID(owner)) {
      SetDParam(0, STR_COMPANY_SOMEONE);
    } else {
      SetDParam(0, STR_COMPANY_NAME);
      SetDParam(1, owner);
    }
  } else {
    assert(tile != 0);
    const Town *t = ClosestTownFromTile(tile, UINT_MAX);
 
    SetDParam(0, STR_TOWN_NAME);
    SetDParam(1, t->index);
  }
}
 
 
CommandCost CheckOwnership(Owner owner, TileIndex tile)
{
  assert(owner < OWNER_END);
  assert(owner != OWNER_TOWN || tile != 0);
 
  if (owner == _current_company) return CommandCost();
 
  SetDParamsForOwnedBy(owner, tile);
  return_cmd_error(STR_ERROR_OWNED_BY);
}
 
CommandCost CheckTileOwnership(TileIndex tile)
{
  Owner owner = GetTileOwner(tile);
 
  assert(owner < OWNER_END);
 
  if (owner == _current_company) return CommandCost();
 
  /* no need to get the name of the owner unless we're the local company (saves some time) */
  if (IsLocalCompany()) SetDParamsForOwnedBy(owner, tile);
  return_cmd_error(STR_ERROR_OWNED_BY);
}
 
static void GenerateCompanyName(Company *c)
{
  if (c->name_1 != STR_SV_UNNAMED) return;
  if (c->last_build_coordinate == 0) return;
 
  Town *t = ClosestTownFromTile(c->last_build_coordinate, UINT_MAX);
 
  StringID str;
  uint32_t strp;
  std::string name;
  if (t->name.empty() && IsInsideMM(t->townnametype, SPECSTR_TOWNNAME_START, SPECSTR_TOWNNAME_LAST + 1)) {
    str = t->townnametype - SPECSTR_TOWNNAME_START + SPECSTR_COMPANY_NAME_START;
    strp = t->townnameparts;
 
verify_name:;
    /* No companies must have this name already */
    for (const Company *cc : Company::Iterate()) {
      if (cc->name_1 == str && cc->name_2 == strp) goto bad_town_name;
    }
 
    SetDParam(0, strp);
    name = GetString(str);
    if (Utf8StringLength(name) >= MAX_LENGTH_COMPANY_NAME_CHARS) goto bad_town_name;
 
set_name:;
    c->name_1 = str;
    c->name_2 = strp;
 
    MarkWholeScreenDirty();
 
    if (c->is_ai) {
      CompanyNewsInformation *cni = new CompanyNewsInformation(c);
      SetDParam(0, STR_NEWS_COMPANY_LAUNCH_TITLE);
      SetDParam(1, STR_NEWS_COMPANY_LAUNCH_DESCRIPTION);
      SetDParamStr(2, cni->company_name);
      SetDParam(3, t->index);
      AddNewsItem(STR_MESSAGE_NEWS_FORMAT, NT_COMPANY_INFO, NF_COMPANY, NR_TILE, c->last_build_coordinate.base(), NR_NONE, UINT32_MAX, cni);
    }
    return;
  }
bad_town_name:;
 
  if (c->president_name_1 == SPECSTR_PRESIDENT_NAME) {
    str = SPECSTR_ANDCO_NAME;
    strp = c->president_name_2;
    goto set_name;
  } else {
    str = SPECSTR_ANDCO_NAME;
    strp = Random();
    goto verify_name;
  }
}
 
static const byte _colour_sort[COLOUR_END] = {2, 2, 3, 2, 3, 2, 3, 2, 3, 2, 2, 2, 3, 1, 1, 1};
static const Colours _similar_colour[COLOUR_END][2] = {
  { COLOUR_BLUE,       COLOUR_LIGHT_BLUE }, // COLOUR_DARK_BLUE
  { COLOUR_GREEN,      COLOUR_DARK_GREEN }, // COLOUR_PALE_GREEN
  { INVALID_COLOUR,    INVALID_COLOUR    }, // COLOUR_PINK
  { COLOUR_ORANGE,     INVALID_COLOUR    }, // COLOUR_YELLOW
  { INVALID_COLOUR,    INVALID_COLOUR    }, // COLOUR_RED
  { COLOUR_DARK_BLUE,  COLOUR_BLUE       }, // COLOUR_LIGHT_BLUE
  { COLOUR_PALE_GREEN, COLOUR_DARK_GREEN }, // COLOUR_GREEN
  { COLOUR_PALE_GREEN, COLOUR_GREEN      }, // COLOUR_DARK_GREEN
  { COLOUR_DARK_BLUE,  COLOUR_LIGHT_BLUE }, // COLOUR_BLUE
  { COLOUR_BROWN,      COLOUR_ORANGE     }, // COLOUR_CREAM
  { COLOUR_PURPLE,     INVALID_COLOUR    }, // COLOUR_MAUVE
  { COLOUR_MAUVE,      INVALID_COLOUR    }, // COLOUR_PURPLE
  { COLOUR_YELLOW,     COLOUR_CREAM      }, // COLOUR_ORANGE
  { COLOUR_CREAM,      INVALID_COLOUR    }, // COLOUR_BROWN
  { COLOUR_WHITE,      INVALID_COLOUR    }, // COLOUR_GREY
  { COLOUR_GREY,       INVALID_COLOUR    }, // COLOUR_WHITE
};
 
static Colours GenerateCompanyColour()
{
  Colours colours[COLOUR_END];
 
  /* Initialize array */
  for (uint i = 0; i < COLOUR_END; i++) colours[i] = (Colours)i;
 
  /* And randomize it */
  for (uint i = 0; i < 100; i++) {
    uint r = Random();
    Swap(colours[GB(r, 0, 4)], colours[GB(r, 4, 4)]);
  }
 
  /* Bubble sort it according to the values in table 1 */
  for (uint i = 0; i < COLOUR_END; i++) {
    for (uint j = 1; j < COLOUR_END; j++) {
      if (_colour_sort[colours[j - 1]] < _colour_sort[colours[j]]) {
        Swap(colours[j - 1], colours[j]);
      }
    }
  }
 
  /* Move the colours that look similar to each company's colour to the side */
  for (const Company *c : Company::Iterate()) {
    Colours pcolour = c->colour;
 
    for (uint i = 0; i < COLOUR_END; i++) {
      if (colours[i] == pcolour) {
        colours[i] = INVALID_COLOUR;
        break;
      }
    }
 
    for (uint j = 0; j < 2; j++) {
      Colours similar = _similar_colour[pcolour][j];
      if (similar == INVALID_COLOUR) break;
 
      for (uint i = 1; i < COLOUR_END; i++) {
        if (colours[i - 1] == similar) Swap(colours[i - 1], colours[i]);
      }
    }
  }
 
  /* Return the first available colour */
  for (uint i = 0; i < COLOUR_END; i++) {
    if (colours[i] != INVALID_COLOUR) return colours[i];
  }
 
  NOT_REACHED();
}
 
static void GeneratePresidentName(Company *c)
{
  for (;;) {
restart:;
    c->president_name_2 = Random();
    c->president_name_1 = SPECSTR_PRESIDENT_NAME;
 
    /* Reserve space for extra unicode character. We need to do this to be able
     * to detect too long president name. */
    SetDParam(0, c->index);
    std::string name = GetString(STR_PRESIDENT_NAME);
    if (Utf8StringLength(name) >= MAX_LENGTH_PRESIDENT_NAME_CHARS) continue;
 
    for (const Company *cc : Company::Iterate()) {
      if (c != cc) {
        SetDParam(0, cc->index);
        std::string other_name = GetString(STR_PRESIDENT_NAME);
        if (name == other_name) goto restart;
      }
    }
    return;
  }
}
 
void ResetCompanyLivery(Company *c)
{
  for (LiveryScheme scheme = LS_BEGIN; scheme < LS_END; scheme++) {
    c->livery[scheme].in_use  = 0;
    c->livery[scheme].colour1 = c->colour;
    c->livery[scheme].colour2 = c->colour;
  }
 
  for (Group *g : Group::Iterate()) {
    if (g->owner == c->index) {
      g->livery.in_use  = 0;
      g->livery.colour1 = c->colour;
      g->livery.colour2 = c->colour;
    }
  }
}
 
Company *DoStartupNewCompany(bool is_ai, CompanyID company = INVALID_COMPANY)
{
  if (!Company::CanAllocateItem()) return nullptr;
 
  /* we have to generate colour before this company is valid */
  Colours colour = GenerateCompanyColour();
 
  Company *c;
  if (company == INVALID_COMPANY) {
    c = new Company(STR_SV_UNNAMED, is_ai);
  } else {
    if (Company::IsValidID(company)) return nullptr;
    c = new (company) Company(STR_SV_UNNAMED, is_ai);
  }
 
  c->colour = colour;
 
  ResetCompanyLivery(c);
  _company_colours[c->index] = c->colour;
 
  /* Scale the initial loan based on the inflation rounded down to the loan interval. The maximum loan has already been inflation adjusted. */
  c->money = c->current_loan = std::min<int64_t>((INITIAL_LOAN * _economy.inflation_prices >> 16) / LOAN_INTERVAL * LOAN_INTERVAL, _economy.max_loan);
 
  c->avail_railtypes = GetCompanyRailTypes(c->index);
  c->avail_roadtypes = GetCompanyRoadTypes(c->index);
  c->inaugurated_year = TimerGameEconomy::year;
 
  /* If starting a player company in singleplayer and a favorite company manager face is selected, choose it. Otherwise, use a random face.
   * In a network game, we'll choose the favorite face later in CmdCompanyCtrl to sync it to all clients. */
  if (_company_manager_face != 0 && !is_ai && !_networking) {
    c->face = _company_manager_face;
  } else {
    RandomCompanyManagerFaceBits(c->face, (GenderEthnicity)Random(), false, _random);
  }
 
  SetDefaultCompanySettings(c->index);
  ClearEnginesHiddenFlagOfCompany(c->index);
 
  GeneratePresidentName(c);
 
  SetWindowDirty(WC_GRAPH_LEGEND, 0);
  InvalidateWindowData(WC_CLIENT_LIST, 0);
  InvalidateWindowData(WC_LINKGRAPH_LEGEND, 0);
  BuildOwnerLegend();
  InvalidateWindowData(WC_SMALLMAP, 0, 1);
 
  if (is_ai && (!_networking || _network_server)) AI::StartNew(c->index);
 
  AI::BroadcastNewEvent(new ScriptEventCompanyNew(c->index), c->index);
  Game::NewEvent(new ScriptEventCompanyNew(c->index));
 
  return c;
}
 
TimeoutTimer<TimerGameTick> _new_competitor_timeout(0, []() {
  if (_game_mode == GM_MENU || !AI::CanStartNew()) return;
  if (_networking && Company::GetNumItems() >= _settings_client.network.max_companies) return;
 
  /* count number of competitors */
  uint8_t n = 0;
  for (const Company *c : Company::Iterate()) {
    if (c->is_ai) n++;
  }
 
  if (n >= _settings_game.difficulty.max_no_competitors) return;
 
  /* Send a command to all clients to start up a new AI.
   * Works fine for Multiplayer and Singleplayer */
  Command<CMD_COMPANY_CTRL>::Post(CCA_NEW_AI, INVALID_COMPANY, CRR_NONE, INVALID_CLIENT_ID);
});
 
void StartupCompanies()
{
  /* Ensure the timeout is aborted, so it doesn't fire based on information of the last game. */
  _new_competitor_timeout.Abort();
}
 
void InitializeCompanies()
{
  _cur_company_tick_index = 0;
}
 
bool MayCompanyTakeOver(CompanyID cbig, CompanyID csmall)
{
  const Company *c1 = Company::Get(cbig);
  const Company *c2 = Company::Get(csmall);
 
  /* Do the combined vehicle counts stay within the limits? */
  return c1->group_all[VEH_TRAIN].num_vehicle + c2->group_all[VEH_TRAIN].num_vehicle <= _settings_game.vehicle.max_trains &&
    c1->group_all[VEH_ROAD].num_vehicle     + c2->group_all[VEH_ROAD].num_vehicle     <= _settings_game.vehicle.max_roadveh &&
    c1->group_all[VEH_SHIP].num_vehicle     + c2->group_all[VEH_SHIP].num_vehicle     <= _settings_game.vehicle.max_ships &&
    c1->group_all[VEH_AIRCRAFT].num_vehicle + c2->group_all[VEH_AIRCRAFT].num_vehicle <= _settings_game.vehicle.max_aircraft;
}
 
static void HandleBankruptcyTakeover(Company *c)
{
  /* Amount of time out for each company to take over a company;
   * Timeout is a quarter (3 months of 30 days) divided over the
   * number of companies. The minimum number of days in a quarter
   * is 90: 31 in January, 28 in February and 31 in March.
   * Note that the company going bankrupt can't buy itself. */
  static const int TAKE_OVER_TIMEOUT = 3 * 30 * Ticks::DAY_TICKS / (MAX_COMPANIES - 1);
 
  assert(c->bankrupt_asked != 0);
 
  /* We're currently asking some company to buy 'us' */
  if (c->bankrupt_timeout != 0) {
    c->bankrupt_timeout -= MAX_COMPANIES;
    if (c->bankrupt_timeout > 0) return;
    c->bankrupt_timeout = 0;
 
    return;
  }
 
  /* Did we ask everyone for bankruptcy? If so, bail out. */
  if (c->bankrupt_asked == MAX_UVALUE(CompanyMask)) return;
 
  Company *best = nullptr;
  int32_t best_performance = -1;
 
  /* Ask the company with the highest performance history first */
  for (Company *c2 : Company::Iterate()) {
    if (c2->bankrupt_asked == 0 && // Don't ask companies going bankrupt themselves
        !HasBit(c->bankrupt_asked, c2->index) &&
        best_performance < c2->old_economy[1].performance_history &&
        MayCompanyTakeOver(c2->index, c->index)) {
      best_performance = c2->old_economy[1].performance_history;
      best = c2;
    }
  }
 
  /* Asked all companies? */
  if (best_performance == -1) {
    c->bankrupt_asked = MAX_UVALUE(CompanyMask);
    return;
  }
 
  SetBit(c->bankrupt_asked, best->index);
 
  c->bankrupt_timeout = TAKE_OVER_TIMEOUT;
 
  AI::NewEvent(best->index, new ScriptEventCompanyAskMerger(c->index, c->bankrupt_value));
  if (IsInteractiveCompany(best->index)) {
    ShowBuyCompanyDialog(c->index, false);
  }
}
 
void OnTick_Companies()
{
  if (_game_mode == GM_EDITOR) return;
 
  Company *c = Company::GetIfValid(_cur_company_tick_index);
  if (c != nullptr) {
    if (c->name_1 != 0) GenerateCompanyName(c);
    if (c->bankrupt_asked != 0) HandleBankruptcyTakeover(c);
  }
 
  if (_new_competitor_timeout.HasFired() && _game_mode != GM_MENU && AI::CanStartNew()) {
    int32_t timeout = _settings_game.difficulty.competitors_interval * 60 * Ticks::TICKS_PER_SECOND;
    /* If the interval is zero, start as many competitors as needed then check every ~10 minutes if a company went bankrupt and needs replacing. */
    if (timeout == 0) {
      /* count number of competitors */
      uint8_t n = 0;
      for (const Company *cc : Company::Iterate()) {
        if (cc->is_ai) n++;
      }
 
      for (auto i = 0; i < _settings_game.difficulty.max_no_competitors; i++) {
        if (_networking && Company::GetNumItems() >= _settings_client.network.max_companies) break;
        if (n++ >= _settings_game.difficulty.max_no_competitors) break;
        Command<CMD_COMPANY_CTRL>::Post(CCA_NEW_AI, INVALID_COMPANY, CRR_NONE, INVALID_CLIENT_ID);
      }
      timeout = 10 * 60 * Ticks::TICKS_PER_SECOND;
    }
    /* Randomize a bit when the AI is actually going to start; ranges from 87.5% .. 112.5% of indicated value. */
    timeout += ScriptObject::GetRandomizer(OWNER_NONE).Next(timeout / 4) - timeout / 8;
 
    _new_competitor_timeout.Reset(std::max(1, timeout));
  }
 
  _cur_company_tick_index = (_cur_company_tick_index + 1) % MAX_COMPANIES;
}
 
static IntervalTimer<TimerGameEconomy> _economy_companies_yearly({TimerGameEconomy::YEAR, TimerGameEconomy::Priority::COMPANY}, [](auto)
{
  /* Copy statistics */
  for (Company *c : Company::Iterate()) {
    /* Move expenses to previous years. */
    std::rotate(std::rbegin(c->yearly_expenses), std::rbegin(c->yearly_expenses) + 1, std::rend(c->yearly_expenses));
    c->yearly_expenses[0] = {};
    SetWindowDirty(WC_FINANCES, c->index);
  }
 
  if (_settings_client.gui.show_finances && _local_company != COMPANY_SPECTATOR) {
    ShowCompanyFinances(_local_company);
    Company *c = Company::Get(_local_company);
    if (c->num_valid_stat_ent > 5 && c->old_economy[0].performance_history < c->old_economy[4].performance_history) {
      if (_settings_client.sound.new_year) SndPlayFx(SND_01_BAD_YEAR);
    } else {
      if (_settings_client.sound.new_year) SndPlayFx(SND_00_GOOD_YEAR);
    }
  }
});
 
CompanyNewsInformation::CompanyNewsInformation(const Company *c, const Company *other)
{
  SetDParam(0, c->index);
  this->company_name = GetString(STR_COMPANY_NAME);
 
  if (other != nullptr) {
    SetDParam(0, other->index);
    this->other_company_name = GetString(STR_COMPANY_NAME);
    c = other;
  }
 
  SetDParam(0, c->index);
  this->president_name = GetString(STR_PRESIDENT_NAME_MANAGER);
 
  this->colour = c->colour;
  this->face = c->face;
 
}
 
void CompanyAdminUpdate(const Company *company)
{
  if (_network_server) NetworkAdminCompanyUpdate(company);
}
 
void CompanyAdminRemove(CompanyID company_id, CompanyRemoveReason reason)
{
  if (_network_server) NetworkAdminCompanyRemove(company_id, (AdminCompanyRemoveReason)reason);
}
 
CommandCost CmdCompanyCtrl(DoCommandFlag flags, CompanyCtrlAction cca, CompanyID company_id, CompanyRemoveReason reason, ClientID client_id)
{
  InvalidateWindowData(WC_COMPANY_LEAGUE, 0, 0);
 
  switch (cca) {
    case CCA_NEW: { // Create a new company
      /* This command is only executed in a multiplayer game */
      if (!_networking) return CMD_ERROR;
 
      /* Has the network client a correct ClientIndex? */
      if (!(flags & DC_EXEC)) return CommandCost();
 
      NetworkClientInfo *ci = NetworkClientInfo::GetByClientID(client_id);
 
      /* Delete multiplayer progress bar */
      CloseWindowById(WC_NETWORK_STATUS_WINDOW, WN_NETWORK_STATUS_WINDOW_JOIN);
 
      Company *c = DoStartupNewCompany(false);
 
      /* A new company could not be created, revert to being a spectator */
      if (c == nullptr) {
        /* We check for "ci != nullptr" as a client could have left by
         * the time we execute this command. */
        if (_network_server && ci != nullptr) {
          ci->client_playas = COMPANY_SPECTATOR;
          NetworkUpdateClientInfo(ci->client_id);
        }
        break;
      }
 
      /* Send new companies, before potentially setting the password. Otherwise,
       * the password update could be sent when the company is not yet known. */
      NetworkAdminCompanyNew(c);
      NetworkServerNewCompany(c, ci);
 
      /* This is the client (or non-dedicated server) who wants a new company */
      if (client_id == _network_own_client_id) {
        assert(_local_company == COMPANY_SPECTATOR);
        SetLocalCompany(c->index);
        if (!_settings_client.network.default_company_pass.empty()) {
          NetworkChangeCompanyPassword(_local_company, _settings_client.network.default_company_pass);
        }
 
        /* In network games, we need to try setting the company manager face here to sync it to all clients.
         * If a favorite company manager face is selected, choose it. Otherwise, use a random face. */
        if (_company_manager_face != 0) Command<CMD_SET_COMPANY_MANAGER_FACE>::SendNet(STR_NULL, c->index, _company_manager_face);
 
        /* Now that we have a new company, broadcast our company settings to
         * all clients so everything is in sync */
        SyncCompanySettings();
 
        MarkWholeScreenDirty();
      }
      break;
    }
 
    case CCA_NEW_AI: { // Make a new AI company
      if (company_id != INVALID_COMPANY && company_id >= MAX_COMPANIES) return CMD_ERROR;
 
      /* For network games, company deletion is delayed. */
      if (!_networking && company_id != INVALID_COMPANY && Company::IsValidID(company_id)) return CMD_ERROR;
 
      if (!(flags & DC_EXEC)) return CommandCost();
 
      /* For network game, just assume deletion happened. */
      assert(company_id == INVALID_COMPANY || !Company::IsValidID(company_id));
 
      Company *c = DoStartupNewCompany(true, company_id);
      if (c != nullptr) {
        NetworkAdminCompanyNew(c);
        NetworkServerNewCompany(c, nullptr);
      }
      break;
    }
 
    case CCA_DELETE: { // Delete a company
      if (reason >= CRR_END) return CMD_ERROR;
 
      /* We can't delete the last existing company in singleplayer mode. */
      if (!_networking && Company::GetNumItems() == 1) return CMD_ERROR;
 
      Company *c = Company::GetIfValid(company_id);
      if (c == nullptr) return CMD_ERROR;
 
      if (!(flags & DC_EXEC)) return CommandCost();
 
      CompanyNewsInformation *cni = new CompanyNewsInformation(c);
 
      /* Show the bankrupt news */
      SetDParam(0, STR_NEWS_COMPANY_BANKRUPT_TITLE);
      SetDParam(1, STR_NEWS_COMPANY_BANKRUPT_DESCRIPTION);
      SetDParamStr(2, cni->company_name);
      AddCompanyNewsItem(STR_MESSAGE_NEWS_FORMAT, cni);
 
      /* Remove the company */
      ChangeOwnershipOfCompanyItems(c->index, INVALID_OWNER);
      if (c->is_ai) AI::Stop(c->index);
 
      CompanyID c_index = c->index;
      delete c;
      AI::BroadcastNewEvent(new ScriptEventCompanyBankrupt(c_index));
      Game::NewEvent(new ScriptEventCompanyBankrupt(c_index));
      CompanyAdminRemove(c_index, (CompanyRemoveReason)reason);
 
      if (StoryPage::GetNumItems() == 0 || Goal::GetNumItems() == 0) InvalidateWindowData(WC_MAIN_TOOLBAR, 0);
      InvalidateWindowData(WC_CLIENT_LIST, 0);
 
      break;
    }
 
    default: return CMD_ERROR;
  }
 
  InvalidateWindowClassesData(WC_GAME_OPTIONS);
  InvalidateWindowClassesData(WC_SCRIPT_SETTINGS);
  InvalidateWindowClassesData(WC_SCRIPT_LIST);
 
  return CommandCost();
}
 
CommandCost CmdSetCompanyManagerFace(DoCommandFlag flags, CompanyManagerFace cmf)
{
  if (!IsValidCompanyManagerFace(cmf)) return CMD_ERROR;
 
  if (flags & DC_EXEC) {
    Company::Get(_current_company)->face = cmf;
    MarkWholeScreenDirty();
  }
  return CommandCost();
}
 
void UpdateCompanyLiveries(Company *c)
{
  for (int i = 1; i < LS_END; i++) {
    if (!HasBit(c->livery[i].in_use, 0)) c->livery[i].colour1 = c->livery[LS_DEFAULT].colour1;
    if (!HasBit(c->livery[i].in_use, 1)) c->livery[i].colour2 = c->livery[LS_DEFAULT].colour2;
  }
  UpdateCompanyGroupLiveries(c);
}
 
CommandCost CmdSetCompanyColour(DoCommandFlag flags, LiveryScheme scheme, bool primary, Colours colour)
{
  if (scheme >= LS_END || (colour >= COLOUR_END && colour != INVALID_COLOUR)) return CMD_ERROR;
 
  /* Default scheme can't be reset to invalid. */
  if (scheme == LS_DEFAULT && colour == INVALID_COLOUR) return CMD_ERROR;
 
  Company *c = Company::Get(_current_company);
 
  /* Ensure no two companies have the same primary colour */
  if (scheme == LS_DEFAULT && primary) {
    for (const Company *cc : Company::Iterate()) {
      if (cc != c && cc->colour == colour) return CMD_ERROR;
    }
  }
 
  if (flags & DC_EXEC) {
    if (primary) {
      if (scheme != LS_DEFAULT) SB(c->livery[scheme].in_use, 0, 1, colour != INVALID_COLOUR);
      if (colour == INVALID_COLOUR) colour = c->livery[LS_DEFAULT].colour1;
      c->livery[scheme].colour1 = colour;
 
      /* If setting the first colour of the default scheme, adjust the
       * original and cached company colours too. */
      if (scheme == LS_DEFAULT) {
        UpdateCompanyLiveries(c);
        _company_colours[_current_company] = colour;
        c->colour = colour;
        CompanyAdminUpdate(c);
      }
    } else {
      if (scheme != LS_DEFAULT) SB(c->livery[scheme].in_use, 1, 1, colour != INVALID_COLOUR);
      if (colour == INVALID_COLOUR) colour = c->livery[LS_DEFAULT].colour2;
      c->livery[scheme].colour2 = colour;
 
      if (scheme == LS_DEFAULT) {
        UpdateCompanyLiveries(c);
      }
    }
 
    if (c->livery[scheme].in_use != 0) {
      /* If enabling a scheme, set the default scheme to be in use too */
      c->livery[LS_DEFAULT].in_use = 1;
    } else {
      /* Else loop through all schemes to see if any are left enabled.
       * If not, disable the default scheme too. */
      c->livery[LS_DEFAULT].in_use = 0;
      for (scheme = LS_DEFAULT; scheme < LS_END; scheme++) {
        if (c->livery[scheme].in_use != 0) {
          c->livery[LS_DEFAULT].in_use = 1;
          break;
        }
      }
    }
 
    ResetVehicleColourMap();
    MarkWholeScreenDirty();
 
    /* All graph related to companies use the company colour. */
    InvalidateWindowData(WC_INCOME_GRAPH, 0);
    InvalidateWindowData(WC_OPERATING_PROFIT, 0);
    InvalidateWindowData(WC_DELIVERED_CARGO, 0);
    InvalidateWindowData(WC_PERFORMANCE_HISTORY, 0);
    InvalidateWindowData(WC_COMPANY_VALUE, 0);
    InvalidateWindowData(WC_LINKGRAPH_LEGEND, 0);
    /* The smallmap owner view also stores the company colours. */
    BuildOwnerLegend();
    InvalidateWindowData(WC_SMALLMAP, 0, 1);
 
    /* Company colour data is indirectly cached. */
    for (Vehicle *v : Vehicle::Iterate()) {
      if (v->owner == _current_company) v->InvalidateNewGRFCache();
    }
 
    UpdateObjectColours(c);
  }
  return CommandCost();
}
 
static bool IsUniqueCompanyName(const std::string &name)
{
  for (const Company *c : Company::Iterate()) {
    if (!c->name.empty() && c->name == name) return false;
  }
 
  return true;
}
 
CommandCost CmdRenameCompany(DoCommandFlag flags, const std::string &text)
{
  bool reset = text.empty();
 
  if (!reset) {
    if (Utf8StringLength(text) >= MAX_LENGTH_COMPANY_NAME_CHARS) return CMD_ERROR;
    if (!IsUniqueCompanyName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
  }
 
  if (flags & DC_EXEC) {
    Company *c = Company::Get(_current_company);
    if (reset) {
      c->name.clear();
    } else {
      c->name = text;
    }
    MarkWholeScreenDirty();
    CompanyAdminUpdate(c);
  }
 
  return CommandCost();
}
 
static bool IsUniquePresidentName(const std::string &name)
{
  for (const Company *c : Company::Iterate()) {
    if (!c->president_name.empty() && c->president_name == name) return false;
  }
 
  return true;
}
 
CommandCost CmdRenamePresident(DoCommandFlag flags, const std::string &text)
{
  bool reset = text.empty();
 
  if (!reset) {
    if (Utf8StringLength(text) >= MAX_LENGTH_PRESIDENT_NAME_CHARS) return CMD_ERROR;
    if (!IsUniquePresidentName(text)) return_cmd_error(STR_ERROR_NAME_MUST_BE_UNIQUE);
  }
 
  if (flags & DC_EXEC) {
    Company *c = Company::Get(_current_company);
 
    if (reset) {
      c->president_name.clear();
    } else {
      c->president_name = text;
 
      if (c->name_1 == STR_SV_UNNAMED && c->name.empty()) {
        Command<CMD_RENAME_COMPANY>::Do(DC_EXEC, text + " Transport");
      }
    }
 
    MarkWholeScreenDirty();
    CompanyAdminUpdate(c);
  }
 
  return CommandCost();
}
 
int CompanyServiceInterval(const Company *c, VehicleType type)
{
  const VehicleDefaultSettings *vds = (c == nullptr) ? &_settings_client.company.vehicle : &c->settings.vehicle;
  switch (type) {
    default: NOT_REACHED();
    case VEH_TRAIN:    return vds->servint_trains;
    case VEH_ROAD:     return vds->servint_roadveh;
    case VEH_AIRCRAFT: return vds->servint_aircraft;
    case VEH_SHIP:     return vds->servint_ships;
  }
}
 
uint32_t CompanyInfrastructure::GetRoadTotal() const
{
  uint32_t total = 0;
  for (RoadType rt = ROADTYPE_BEGIN; rt != ROADTYPE_END; rt++) {
    if (RoadTypeIsRoad(rt)) total += this->road[rt];
  }
  return total;
}
 
uint32_t CompanyInfrastructure::GetTramTotal() const
{
  uint32_t total = 0;
  for (RoadType rt = ROADTYPE_BEGIN; rt != ROADTYPE_END; rt++) {
    if (RoadTypeIsTram(rt)) total += this->road[rt];
  }
  return total;
}
 
CommandCost CmdGiveMoney(DoCommandFlag flags, Money money, CompanyID dest_company)
{
  if (!_settings_game.economy.give_money) return CMD_ERROR;
 
  const Company *c = Company::Get(_current_company);
  CommandCost amount(EXPENSES_OTHER, std::min<Money>(money, 20000000LL));
 
  /* You can only transfer funds that is in excess of your loan */
  if (c->money - c->current_loan < amount.GetCost() || amount.GetCost() < 0) return_cmd_error(STR_ERROR_INSUFFICIENT_FUNDS);
  if (!Company::IsValidID(dest_company)) return CMD_ERROR;
 
  if (flags & DC_EXEC) {
    /* Add money to company */
    Backup<CompanyID> cur_company(_current_company, dest_company, FILE_LINE);
    SubtractMoneyFromCompany(CommandCost(EXPENSES_OTHER, -amount.GetCost()));
    cur_company.Restore();
 
    if (_networking) {
      SetDParam(0, dest_company);
      std::string dest_company_name = GetString(STR_COMPANY_NAME);
 
      SetDParam(0, _current_company);
      std::string from_company_name = GetString(STR_COMPANY_NAME);
 
      NetworkTextMessage(NETWORK_ACTION_GIVE_MONEY, GetDrawStringCompanyColour(_current_company), false, from_company_name, dest_company_name, amount.GetCost());
    }
  }
 
  /* Subtract money from local-company */
  return amount;
}
 
CompanyID GetFirstPlayableCompanyID()
{
  for (Company *c : Company::Iterate()) {
    if (Company::IsHumanID(c->index)) {
      return c->index;
    }
  }
 
  if (Company::CanAllocateItem()) {
    for (CompanyID c = COMPANY_FIRST; c < MAX_COMPANIES; c++) {
      if (!Company::IsValidID(c)) {
        return c;
      }
    }
  }
 
  return COMPANY_FIRST;
}