goal.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 <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#include "stdafx.h"
#include "company_func.h"
#include "industry.h"
#include "town.h"
#include "window_func.h"
#include "goal_base.h"
#include "core/pool_func.hpp"
#include "game/game.hpp"
#include "command_func.h"
#include "company_base.h"
#include "story_base.h"
#include "string_func.h"
#include "goal_gui.h"
#include "network/network.h"
#include "network/network_base.h"
#include "network/network_func.h"
#include "goal_cmd.h"
 
#include "safeguards.h"
 
 
GoalPool _goal_pool("Goal");
INSTANTIATE_POOL_METHODS(Goal)
 
/* static */ bool Goal::IsValidGoalDestination(CompanyID company, GoalType type, GoalTypeID dest)
{
  switch (type) {
    case GoalType::None:
      if (dest != 0) return false;
      break;
 
    case GoalType::Tile:
      if (!IsValidTile(dest)) return false;
      break;
 
    case GoalType::Industry:
      if (!Industry::IsValidID(dest)) return false;
      break;
 
    case GoalType::Town:
      if (!Town::IsValidID(dest)) return false;
      break;
 
    case GoalType::Company:
      if (!Company::IsValidID(dest)) return false;
      break;
 
    case GoalType::StoryPage: {
      if (!StoryPage::IsValidID(dest)) return false;
      CompanyID story_company = StoryPage::Get(dest)->company;
      if (company == CompanyID::Invalid() ? story_company != CompanyID::Invalid() : story_company != CompanyID::Invalid() && story_company != company) return false;
      break;
    }
 
    default: return false;
  }
  return true;
}

std::tuple<CommandCost, GoalID> CmdCreateGoal(DoCommandFlags flags, CompanyID company, GoalType type, GoalTypeID dest, const EncodedString &text)
{
  if (!Goal::CanAllocateItem()) return { CMD_ERROR, GoalID::Invalid() };
 
  if (_current_company != OWNER_DEITY) return { CMD_ERROR, GoalID::Invalid() };
  if (text.empty()) return { CMD_ERROR, GoalID::Invalid() };
  if (company != CompanyID::Invalid() && !Company::IsValidID(company)) return { CMD_ERROR, GoalID::Invalid() };
  if (!Goal::IsValidGoalDestination(company, type, dest)) return { CMD_ERROR, GoalID::Invalid() };
 
  if (flags.Test(DoCommandFlag::Execute)) {
    Goal *g = Goal::Create(type, dest, company, text);
 
    if (g->company == CompanyID::Invalid()) {
      InvalidateWindowClassesData(WindowClass::GoalList);
    } else {
      InvalidateWindowData(WindowClass::GoalList, g->company);
    }
    if (Goal::GetNumItems() == 1) InvalidateWindowData(WindowClass::MainToolbar, 0);
 
    return { CommandCost(), g->index };
  }
 
  return { CommandCost(), GoalID::Invalid() };
}

CommandCost CmdRemoveGoal(DoCommandFlags flags, GoalID goal)
{
  if (_current_company != OWNER_DEITY) return CMD_ERROR;
  if (!Goal::IsValidID(goal)) return CMD_ERROR;
 
  if (flags.Test(DoCommandFlag::Execute)) {
    Goal *g = Goal::Get(goal);
    CompanyID c = g->company;
    delete g;
 
    if (c == CompanyID::Invalid()) {
      InvalidateWindowClassesData(WindowClass::GoalList);
    } else {
      InvalidateWindowData(WindowClass::GoalList, c);
    }
    if (Goal::GetNumItems() == 0) InvalidateWindowData(WindowClass::MainToolbar, 0);
  }
 
  return CommandCost();
}

CommandCost CmdSetGoalDestination(DoCommandFlags flags, GoalID goal, GoalType type, GoalTypeID dest)
{
  if (_current_company != OWNER_DEITY) return CMD_ERROR;
  if (!Goal::IsValidID(goal)) return CMD_ERROR;
  Goal *g = Goal::Get(goal);
  if (!Goal::IsValidGoalDestination(g->company, type, dest)) return CMD_ERROR;
 
  if (flags.Test(DoCommandFlag::Execute)) {
    g->type = type;
    g->dst = dest;
  }
 
  return CommandCost();
}

CommandCost CmdSetGoalText(DoCommandFlags flags, GoalID goal, const EncodedString &text)
{
  if (_current_company != OWNER_DEITY) return CMD_ERROR;
  if (!Goal::IsValidID(goal)) return CMD_ERROR;
  if (text.empty()) return CMD_ERROR;
 
  if (flags.Test(DoCommandFlag::Execute)) {
    Goal *g = Goal::Get(goal);
    g->text = text;
 
    if (g->company == CompanyID::Invalid()) {
      InvalidateWindowClassesData(WindowClass::GoalList);
    } else {
      InvalidateWindowData(WindowClass::GoalList, g->company);
    }
  }
 
  return CommandCost();
}

CommandCost CmdSetGoalProgress(DoCommandFlags flags, GoalID goal, const EncodedString &text)
{
  if (_current_company != OWNER_DEITY) return CMD_ERROR;
  if (!Goal::IsValidID(goal)) return CMD_ERROR;
 
  if (flags.Test(DoCommandFlag::Execute)) {
    Goal *g = Goal::Get(goal);
    g->progress = text;
 
    if (g->company == CompanyID::Invalid()) {
      InvalidateWindowClassesData(WindowClass::GoalList);
    } else {
      InvalidateWindowData(WindowClass::GoalList, g->company);
    }
  }
 
  return CommandCost();
}

CommandCost CmdSetGoalCompleted(DoCommandFlags flags, GoalID goal, bool completed)
{
  if (_current_company != OWNER_DEITY) return CMD_ERROR;
  if (!Goal::IsValidID(goal)) return CMD_ERROR;
 
  if (flags.Test(DoCommandFlag::Execute)) {
    Goal *g = Goal::Get(goal);
    g->completed = completed;
 
    if (g->company == CompanyID::Invalid()) {
      InvalidateWindowClassesData(WindowClass::GoalList);
    } else {
      InvalidateWindowData(WindowClass::GoalList, g->company);
    }
  }
 
  return CommandCost();
}

CommandCost CmdGoalQuestion(DoCommandFlags flags, uint16_t uniqueid, uint32_t target, bool is_client, GoalQuestionButtons buttons, GoalQuestionType type, const EncodedString &text)
{
  static_assert(sizeof(uint32_t) >= sizeof(CompanyID));
  CompanyID company = (CompanyID)target;
  static_assert(sizeof(uint32_t) >= sizeof(ClientID));
  ClientID client = (ClientID)target;
 
  if (_current_company != OWNER_DEITY) return CMD_ERROR;
  if (text.empty()) return CMD_ERROR;
  if (is_client) {
    /* Only check during pre-flight; the client might have left between
     * testing and executing. In that case it is fine to just ignore the
     * fact the client is no longer here. */
    if (!flags.Test(DoCommandFlag::Execute) && _network_server && NetworkClientInfo::GetByClientID(client) == nullptr) return CMD_ERROR;
  } else {
    if (company != CompanyID::Invalid() && !Company::IsValidID(company)) return CMD_ERROR;
  }
  uint min_buttons = (type == GoalQuestionType::Question ? 1 : 0);
  if (!buttons.IsValid()) return CMD_ERROR;
  if (buttons.Count() < min_buttons || buttons.Count() > 3) return CMD_ERROR;
  if (type >= GoalQuestionType::End) return CMD_ERROR;
 
  if (flags.Test(DoCommandFlag::Execute)) {
    if (is_client) {
      if (client != _network_own_client_id) return CommandCost();
    } else {
      if (company == CompanyID::Invalid() && !Company::IsValidID(_local_company)) return CommandCost();
      if (company != CompanyID::Invalid() && company != _local_company) return CommandCost();
    }
    ShowGoalQuestion(uniqueid, type, buttons, text);
  }
 
  return CommandCost();
}

CommandCost CmdGoalQuestionAnswer(DoCommandFlags flags, uint16_t uniqueid, GoalQuestionButton button)
{
  if (button >= GoalQuestionButton::End) return CMD_ERROR;
 
  if (_current_company == OWNER_DEITY) {
    /* It has been requested to close this specific question on all clients */
    if (flags.Test(DoCommandFlag::Execute)) CloseWindowById(WindowClass::GoalQuestion, uniqueid);
    return CommandCost();
  }
 
  if (_networking && _local_company == _current_company) {
    /* Somebody in the same company answered the question. Close the window */
    if (flags.Test(DoCommandFlag::Execute)) CloseWindowById(WindowClass::GoalQuestion, uniqueid);
    if (!_network_server) return CommandCost();
  }
 
  if (flags.Test(DoCommandFlag::Execute)) {
    Game::NewEvent(new ScriptEventGoalQuestionAnswer(uniqueid, _current_company, static_cast<ScriptGoal::QuestionButton>(GoalQuestionButtons{button}.base())));
  }
 
  return CommandCost();
}