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Location: cpp/openttd-patchpack/source/src/script/api/script_event.hpp - annotation

Rubidium
Update: nlohmann/json to 3.11.3
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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 <http://www.gnu.org/licenses/>.
 */

/** @file script_event.hpp Everything to handle events from the game. */

#ifndef SCRIPT_EVENT_HPP
#define SCRIPT_EVENT_HPP

#include "script_object.hpp"

/**
 * Class that handles all event related functions.
 * You can lookup the type, and than convert it to the real event-class.
 * That way you can request more detailed information about the event.
 * @api ai game
 */
class ScriptEvent : public ScriptObject {
public:
	/**
	 * The type of event. Needed to lookup the detailed class.
	 */
	enum ScriptEventType {
		ET_INVALID = 0,
		ET_TEST,
		ET_SUBSIDY_OFFER,
		ET_SUBSIDY_OFFER_EXPIRED,
		ET_SUBSIDY_AWARDED,
		ET_SUBSIDY_EXPIRED,
		ET_ENGINE_PREVIEW,
		ET_COMPANY_NEW,
		ET_COMPANY_IN_TROUBLE,
		ET_COMPANY_ASK_MERGER,
		ET_COMPANY_MERGER,
		ET_COMPANY_BANKRUPT,
		ET_VEHICLE_CRASHED,
		ET_VEHICLE_LOST,
		ET_VEHICLE_WAITING_IN_DEPOT,
		ET_VEHICLE_UNPROFITABLE,
		ET_INDUSTRY_OPEN,
		ET_INDUSTRY_CLOSE,
		ET_ENGINE_AVAILABLE,
		ET_STATION_FIRST_VEHICLE,
		ET_DISASTER_ZEPPELINER_CRASHED,
		ET_DISASTER_ZEPPELINER_CLEARED,
		ET_TOWN_FOUNDED,
		ET_AIRCRAFT_DEST_TOO_FAR,
		ET_ADMIN_PORT,
		ET_WINDOW_WIDGET_CLICK,
		ET_GOAL_QUESTION_ANSWER,
		ET_EXCLUSIVE_TRANSPORT_RIGHTS,
		ET_ROAD_RECONSTRUCTION,
		ET_VEHICLE_AUTOREPLACED,
		ET_STORYPAGE_BUTTON_CLICK,
		ET_STORYPAGE_TILE_SELECT,
		ET_STORYPAGE_VEHICLE_SELECT,
	};

	/**
	 * Constructor of ScriptEvent, to get the type of event.
	 * @param type The type of event to construct.
	 */
	ScriptEvent(ScriptEvent::ScriptEventType type) :
		type(type)
	{}

	/**
	 * Get the event-type.
	 * @return The @c ScriptEventType.
	 */
	ScriptEventType GetEventType() { return this->type; }

protected:
	/**
	 * The type of this event.
	 */
	ScriptEventType type;
};

/**
 * Class that handles all event related functions.
 * @api ai game
 * @note it is not needed to create an instance of ScriptEvent to access it, as
 *  all members are static, and all data is stored script instance-wide.
 */
class ScriptEventController : public ScriptObject {
public:
	/**
	 * Check if there is an event waiting.
	 * @return true if there is an event on the stack.
	 */
	static bool IsEventWaiting();

	/**
	 * Get the next event.
	 * @return a class of the event-child issues.
	 */
	static ScriptEvent *GetNextEvent();

	/**
	 * Insert an event to the queue for the company.
	 * @param event The event to insert.
	 * @api -all
	 */
	static void InsertEvent(ScriptEvent *event);

	/**
	 * Free the event pointer.
	 * @api -all
	 */
	static void FreeEventPointer();

private:
	/**
	 * Create the event pointer.
	 */
	static void CreateEventPointer();
};

#endif /* SCRIPT_EVENT_HPP */