File diff r27850:1de405798bd9 → r27851:98395ce429bf
src/script/api/script_industry.hpp
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@@ -2,96 +2,100 @@
 
 * 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 script_industry.hpp Everything to query and build industries. */
 

	
 
#ifndef SCRIPT_INDUSTRY_HPP
 
#define SCRIPT_INDUSTRY_HPP
 

	
 
#include "script_company.hpp"
 
#include "script_date.hpp"
 
#include "script_object.hpp"
 
#include "../../industry.h"
 

	
 
/**
 
 * Class that handles all industry related functions.
 
 * @api ai game
 
 */
 
class ScriptIndustry : public ScriptObject {
 
public:
 
	/** Ways for an industry to accept a cargo. */
 
	enum CargoAcceptState {
 
		CAS_NOT_ACCEPTED, ///< The CargoID is not accepted by this industry.
 
		CAS_ACCEPTED,     ///< The industry currently accepts this CargoID.
 
		CAS_TEMP_REFUSED, ///< The industry temporarily refuses to accept this CargoID but may do so again in the future.
 
	};
 

	
 
	/**
 
	 * Control flags for industry
 
	 * @api -ai
 
	 */
 
	enum IndustryControlFlags {
 
		/**
 
		 * When industry production change is evaluated, rolls to decrease are ignored.
 
		 * This also prevents industry closure due to production dropping to the lowest level.
 
		 */
 
		INDCTL_NO_PRODUCTION_DECREASE = ::INDCTL_NO_PRODUCTION_DECREASE,
 
		/**
 
		 * When industry production change is evaluated, rolls to increase are ignored.
 
		 */
 
		INDCTL_NO_PRODUCTION_INCREASE = ::INDCTL_NO_PRODUCTION_INCREASE,
 
		/**
 
		 * Industry can not close regardless of production level or time since last delivery.
 
		 * This does not prevent a closure already announced.
 
		 */
 
		INDCTL_NO_CLOSURE             = ::INDCTL_NO_CLOSURE,
 
		/**
 
		 * Indicates that the production level of the industry is controlled by a game script.
 
		 */
 
		INDCTL_EXTERNAL_PROD_LEVEL    = ::INDCTL_EXTERNAL_PROD_LEVEL,
 
	};
 

	
 
	/**
 
	 * Gets the number of industries.
 
	 * @return The number of industries.
 
	 * @note The maximum valid IndustryID can be higher than the value returned.
 
	 */
 
	static SQInteger GetIndustryCount();
 

	
 
	/**
 
	 * Checks whether the given industry index is valid.
 
	 * @param industry_id The index to check.
 
	 * @return True if and only if the industry is valid.
 
	 */
 
	static bool IsValidIndustry(IndustryID industry_id);
 

	
 
	/**
 
	 * Get the IndustryID of a tile, if there is an industry.
 
	 * @param tile The tile to find the IndustryID of.
 
	 * @return IndustryID of the industry.
 
	 * @post Use IsValidIndustry() to see if the industry is valid.
 
	 * @note GetIndustryID will return an invalid IndustryID for the
 
	 *   station tile of industries with a dock/heliport.
 
	 */
 
	static IndustryID GetIndustryID(TileIndex tile);
 

	
 
	/**
 
	 * Get the name of the industry.
 
	 * @param industry_id The industry to get the name of.
 
	 * @pre IsValidIndustry(industry_id).
 
	 * @return The name of the industry.
 
	 */
 
	static std::optional<std::string> GetName(IndustryID industry_id);
 

	
 
	/**
 
	 * Get the construction date of an industry.
 
	 * @param industry_id The index of the industry.
 
	 * @pre IsValidIndustry(industry_id).
 
	 * @return Date the industry was constructed.
 
	 * @api -ai
 
	 */
 
	static ScriptDate::Date GetConstructionDate(IndustryID industry_id);
 

	
 
	/**
 
	 * Set the custom text of an industry, shown in the GUI.
 
	 * @param industry_id The industry to set the custom text of.
 
	 * @param text The text to set it to (can be either a raw string, or a ScriptText object). If null, or an empty string, is passed, the text will be removed.
 
	 * @pre ScriptCompanyMode::IsDeity().
 
@@ -278,51 +282,72 @@ public:
 
	 * @pre ScriptCompanyMode::IsDeity().
 
	 * @return True if the action succeeded.
 
	 * @api -ai
 
	 */
 
	static bool SetControlFlags(IndustryID industry_id, SQInteger control_flags);
 

	
 
	/**
 
	 * Find out which company currently has the exclusive rights to deliver cargo to the industry.
 
	 * @param industry_id The index of the industry.
 
	 * @pre IsValidIndustry(industry_id).
 
	 * @return The company that has the exclusive rights. The value
 
	 *         ScriptCompany::COMPANY_INVALID means that there are currently no
 
	 *         exclusive rights given out to anyone.
 
	 */
 
	static ScriptCompany::CompanyID GetExclusiveSupplier(IndustryID industry_id);
 

	
 
	/**
 
	 * Sets or resets the company that has exclusive right to deliver cargo to the industry.
 
	 * @param industry_id The index of the industry.
 
	 * @param company_id The company to set (ScriptCompany::COMPANY_INVALID to reset).
 
	 * @pre IsValidIndustry(industry_id).
 
	 * @pre ScriptCompanyMode::IsDeity().
 
	 * @return True if the action succeeded.
 
	 * @api -ai
 
	 */
 
	static bool SetExclusiveSupplier(IndustryID industry_id, ScriptCompany::CompanyID company_id);
 

	
 
	/**
 
	 * Find out which company currently has the exclusive rights to take cargo from the industry.
 
	 * @param industry_id The index of the industry.
 
	 * @pre IsValidIndustry(industry_id).
 
	 * @return The company that has the exclusive rights. The value
 
	 *         ScriptCompany::COMPANY_SPECTATOR means that there are currently no
 
	 *         exclusive rights given out to anyone.
 
	 */
 
	static ScriptCompany::CompanyID GetExclusiveConsumer(IndustryID industry_id);
 

	
 
	/**
 
	 * Sets or resets the company that has exclusive right to take cargo from the industry.
 
	 * @param industry_id The index of the industry.
 
	 * @param company_id The company to set (ScriptCompany::COMPANY_INVALID to reset).
 
	 * @pre IsValidIndustry(industry_id).
 
	 * @pre ScriptCompanyMode::IsDeity().
 
	 * @return True if the action succeeded.
 
	 * @api -ai
 
	 */
 
	static bool SetExclusiveConsumer(IndustryID industry_id, ScriptCompany::CompanyID company_id);
 

	
 
	/**
 
	 * Gets the current production level of an industry.
 
	 * @param industry_id The index of the industry.
 
	 * @api -ai
 
	 */
 
	static SQInteger GetProductionLevel(IndustryID industry_id);
 

	
 
	/**
 
	 * Sets the current production level of an industry.
 
	 * @note Setting the production level automatically sets the control flag INDCTL_EXTERNAL_PROD_LEVEL if it wasn't already set.
 
	 *     Normal production behaviour can be restored by clearing the control flag.
 
	 * @param industry_id The index of the industry.
 
	 * @param prod_level The production level to set.
 
	 * @param show_news If set to true and the production changed, generate a production change news message. If set to false, no news message is shown.
 
	 * @pre IsValidIndustry(industry_id).
 
	 * @pre ScriptCompanyMode::IsDeity().
 
	 * @pre prod_level >= 4 && prod_level <= 128.
 
	 * @return True if the action succeeded.
 
	 * @api -ai
 
	 */
 
	static bool SetProductionLevel(IndustryID industry_id, SQInteger prod_level, bool show_news);
 
};
 

	
 
#endif /* SCRIPT_INDUSTRY_HPP */