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Location: cpp/openttd-patchpack/source/src/company_base.h

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/* $Id$ */

/*
 * 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/>.
 */

/** @file company_base.h Definition of stuff that is very close to a company, like the company struct itself. */

#ifndef COMPANY_BASE_H
#define COMPANY_BASE_H

#include "core/pool_type.hpp"
#include "road_type.h"
#include "rail_type.h"
#include "livery.h"
#include "autoreplace_type.h"
#include "economy_type.h"
#include "tile_type.h"
#include "settings_type.h"

struct CompanyEconomyEntry {
	Money income;
	Money expenses;
	int32 delivered_cargo;
	int32 performance_history; ///< company score (scale 0-1000)
	Money company_value;
};

typedef Pool<Company, CompanyByte, 1, MAX_COMPANIES> CompanyPool;
extern CompanyPool _company_pool;


/** Statically loadable part of Company pool item */
struct CompanyProperties {
	uint32 name_2; ///< Parameter of #name_1.
	uint16 name_1; ///< Name of the company
	char *name;    ///< Name of the company if the user changed it.

	uint16 president_name_1; ///< Name of the president.
	uint32 president_name_2; ///< Parameter of #president_name_1
	char *president_name;    ///< Name of the president if the user changed it.

	CompanyManagerFace face;

	Money money;         ///< Money owned by the company.
	byte money_fraction; ///< Fraction of money of the company, too small to represent in \a money.
	Money current_loan;

	byte colour;

	RailTypes avail_railtypes;

	byte block_preview;

	uint32 cargo_types; ///< which cargo types were transported the last year

	TileIndex location_of_HQ; ///< northern tile of HQ; INVALID_TILE when there is none
	TileIndex last_build_coordinate;

	OwnerByte share_owners[4]; ///< Owners of the 4 shares of the company. #INVALID_OWNER if nobody has bought them yet.

	Year inaugurated_year;     ///< Year of starting the company.

	byte quarters_of_bankruptcy;
	CompanyMask bankrupt_asked; ///< which companies were asked about buying it?
	int16 bankrupt_timeout;
	Money bankrupt_value;

	bool is_ai; ///< If \c true, the company is controlled by the computer (a NoAI program).

	Money yearly_expenses[3][EXPENSES_END];              ///< Expenses of the company for the last three years, in every #Expenses category.
	CompanyEconomyEntry cur_economy;                     ///< Economic data of the company of this year.
	CompanyEconomyEntry old_economy[MAX_HISTORY_MONTHS]; ///< Economic data of the company of the last #MAX_HISTORY_MONTHS months.
	byte num_valid_stat_ent;                             ///< Number of valid statistical entries in #old_economy.

	CompanyProperties() : name(NULL), president_name(NULL) {}

	~CompanyProperties()
	{
		free(this->name);
		free(this->president_name);
	}
};

struct Company : CompanyPool::PoolItem<&_company_pool>, CompanyProperties {
	Company(uint16 name_1 = 0, bool is_ai = false);
	~Company();

	Livery livery[LS_END];
	RoadTypes avail_roadtypes;

	class AIInstance *ai_instance;
	class AIInfo *ai_info;

	EngineRenewList engine_renew_list;
	CompanySettings settings;          ///< settings specific for each company
	uint16 *num_engines;               ///< caches the number of engines of each type the company owns (no need to save this)

	/**
	 * Is this company a valid company, controlled by the computer (a NoAI program)?
	 * @param index Index in the pool.
	 * @return \c true if it is a valid, computer controlled company, else \c false.
	 */
	static FORCEINLINE bool IsValidAiID(size_t index)
	{
		const Company *c = Company::GetIfValid(index);
		return c != NULL && c->is_ai;
	}

	/**
	 * Is this company a valid company, controlled by a human (possibly another one than the user)?
	 * @param index Index in the pool.
	 * @return \c true if it is a valid, human controlled company, else \c false.
	 * @note If you know that \a index refers to a valid company, you can use #IsHumanID() instead.
	 */
	static FORCEINLINE bool IsValidHumanID(size_t index)
	{
		const Company *c = Company::GetIfValid(index);
		return c != NULL && !c->is_ai;
	}

	/**
	 * Is this company a company controlled by a human (possibly another one than the user)?
	 * @param index Index in the pool.
	 * @return \c true if it is a human controlled company, else \c false.
	 * @pre \a index must be a valid CompanyID.
	 * @note If you don't know whether \a index refers to a valid company, you should use #IsValidHumanID() instead.
	 */
	static FORCEINLINE bool IsHumanID(size_t index)
	{
		return !Company::Get(index)->is_ai;
	}

	static void PostDestructor(size_t index);
};

#define FOR_ALL_COMPANIES_FROM(var, start) FOR_ALL_ITEMS_FROM(Company, company_index, var, start)
#define FOR_ALL_COMPANIES(var) FOR_ALL_COMPANIES_FROM(var, 0)

Money CalculateCompanyValue(const Company *c, bool including_loan = true);

extern uint _next_competitor_start;
extern uint _cur_company_tick_index;

#endif /* COMPANY_BASE_H */