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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 script_viewport.hpp Everything to manipulate the user's viewport. */

#ifndef SCRIPT_VIEWPORT_HPP
#define SCRIPT_VIEWPORT_HPP

#include "script_object.hpp"
#include "script_client.hpp"
#include "script_company.hpp"

/**
 * Class that manipulates the user's viewport.
 * @api game
 */
class ScriptViewport : public ScriptObject {
public:
	/**
	 * Scroll the viewport to the given tile, where the tile will be in the
	 *  center of the screen.
	 * @param tile The tile to put in the center of the screen.
	 * @pre ! ScriptGame::IsMultiplayer().
	 * @pre ScriptMap::IsValidTile(tile).
	 */
	static void ScrollTo(TileIndex tile);

	/**
	 * Scroll the viewport of all players to the given tile,
	 *  where the tile will be in the center of the screen.
	 * @param tile The tile to put in the center of the screen.
	 * @pre ScriptObject::GetCompany() == OWNER_DEITY
	 * @pre ScriptMap::IsValidTile(tile)
	 */
	static bool ScrollEveryoneTo(TileIndex tile);

	/**
	 * Scroll the viewports of all players in the company to the given tile,
	 *  where the tile will be in the center of the screen.
	 * @param company The company which players to scroll the viewport of.
	 * @param tile The tile to put in the center of the screen.
	 * @pre ScriptObject::GetCompany() == OWNER_DEITY
	 * @pre ScriptMap::IsValidTile(tile)
	 * @pre ResolveCompanyID(company) != COMPANY_INVALID
	 */
	static bool ScrollCompanyClientsTo(ScriptCompany::CompanyID company, TileIndex tile);

	/**
	 * Scroll the viewport of the client to the given tile,
	 *  where the tile will be in the center of the screen.
	 * @param client The client to scroll the viewport of.
	 * @param tile The tile to put in the center of the screen.
	 * @pre ScriptGame::IsMultiplayer()
	 * @pre ScriptObject::GetCompany() == OWNER_DEITY
	 * @pre ScriptMap::IsValidTile(tile)
	 * @pre ResolveClientID(client) != CLIENT_INVALID
	 */
	static bool ScrollClientTo(ScriptClient::ClientID client, TileIndex tile);
};

#endif /* SCRIPT_ADMIN_HPP */