/* $Id$ */

/** @file ai_cargo.hpp Everything to query about cargos */

#ifndef AI_CARGO_HPP
#define AI_CARGO_HPP

#include "ai_object.hpp"

class AICargo : public AIObject {
public:
	/**
	 * Gets the string representation of the cargo label
	 * @param cargo_type to get the string representation of
	 * @return the cargo label
	 * @note the returned cargo label must be freed
	 */
	char *GetCargoLabel(CargoID cargo_type);

	/**
	 * Checks whether the give cargo is a freight or not
	 * @param cargo_type is this cargo freight or not?
	 * @return true if and only if the cargo is freight
	 */
	bool IsFreight(CargoID cargo_type);

	/**
	 * Get the income for transporting a piece of cargo over the
	 * given distance within the specified time.
	 * @param distance        the distance the cargo travels from begin to end
	 * @param days_in_transit amount of (game) days the cargo is in transit
	 * @param cargo_type      the cargo to transport
	 * @return the amount of money that would be made by this trip
	 */
	int32 GetCargoIncome(uint32 distance, uint32 days_in_transit, CargoID cargo_type);
};

#ifdef DEFINE_SQUIRREL_CLASS
void SQAICargoRegister(Squirrel *engine) {
	DefSQClass <AICargo> SQAICargo("AICargo");
	SQAICargo.PreRegister(engine);
	SQAICargo.AddConstructor(engine);
	SQAICargo.DefSQFunction(engine, &AICargo::GetCargoLabel,  "GetCargoLabel");
	SQAICargo.DefSQFunction(engine, &AICargo::IsFreight,      "IsFreight");
	SQAICargo.DefSQFunction(engine, &AICargo::GetCargoIncome, "GetCargoIncome");
	SQAICargo.PostRegister(engine);
}
#endif /* SQUIRREL_CLASS */

#endif /* AI_CARGO_HPP */