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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 ai_accounting.hpp Everything to handle AI accounting things. */
#ifndef AI_ACCOUNTING_HPP
#define AI_ACCOUNTING_HPP
#include "ai_object.hpp"
/**
* Class that keeps track of the costs, so you can request how much a block of
* commands did cost in total. Works in both Execute as in Test mode.
* Example:
* <pre>
* {
* local costs = AIAccounting();
* BuildRoad(from_here, to_here);
* BuildRoad(from_there, to_there);
* print("Costs for route is: " + costs.GetCosts());
* }
* </pre>
*/
class AIAccounting : public AIObject {
public:
/**
* Creating instance of this class starts counting the costs of commands
* from zero. Saves the current value of GetCosts so we can return to
* the old value when the instance gets deleted.
*/
AIAccounting();
/**
* Restore the AIAccounting that was on top when we created this instance.
* So basically restore the value of GetCosts to what it was before we
* created this instance.
*/
~AIAccounting();
/**
* Get the current value of the costs.
* @return The current costs.
* @note when nesting AIAccounting instances all instances' GetCosts
* will always return the value of the 'top' instance.
*/
Money GetCosts();
/**
* Reset the costs to zero.
* @note when nesting AIAccounting instances all instances' ResetCosts
* will always effect on the 'top' instance.
*/
void ResetCosts();
private:
Money last_costs; ///< The last cost we did return.
};
#endif /* AI_ACCOUNTING_HPP */
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