/* $Id$ */

/*
 * 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.cpp Implementation of ScriptViewport. */

#include "../../stdafx.h"
#include "script_error.hpp"
#include "script_viewport.hpp"
#include "script_game.hpp"
#include "script_map.hpp"
#include "../script_instance.hpp"
#include "../../viewport_func.h"

#include "../../safeguards.h"

/* static */ void ScriptViewport::ScrollTo(TileIndex tile)
{
	if (ScriptGame::IsMultiplayer()) return;
	if (!ScriptMap::IsValidTile(tile)) return;

	ScrollMainWindowToTile(tile);
}

/* static */ bool ScriptViewport::ScrollEveryoneTo(TileIndex tile)
{
	EnforcePrecondition(false, ScriptObject::GetCompany() == OWNER_DEITY);
	EnforcePrecondition(false, ScriptMap::IsValidTile(tile));

	return ScriptObject::DoCommand(tile, VST_EVERYONE, 0, CMD_SCROLL_VIEWPORT);
}

/* static */ bool ScriptViewport::ScrollCompanyClientsTo(ScriptCompany::CompanyID company, TileIndex tile)
{
	EnforcePrecondition(false, ScriptObject::GetCompany() == OWNER_DEITY);
	EnforcePrecondition(false, ScriptMap::IsValidTile(tile));

	company = ScriptCompany::ResolveCompanyID(company);
	EnforcePrecondition(false, company != ScriptCompany::COMPANY_INVALID);

	return ScriptObject::DoCommand(tile, VST_COMPANY, company, CMD_SCROLL_VIEWPORT);
}

/* static */ bool ScriptViewport::ScrollClientTo(ScriptClient::ClientID client, TileIndex tile)
{
	EnforcePrecondition(false, ScriptGame::IsMultiplayer());
	EnforcePrecondition(false, ScriptObject::GetCompany() == OWNER_DEITY);
	EnforcePrecondition(false, ScriptMap::IsValidTile(tile));

	client = ScriptClient::ResolveClientID(client);
	EnforcePrecondition(false, client != ScriptClient::CLIENT_INVALID);

	return ScriptObject::DoCommand(tile, VST_CLIENT, client, CMD_SCROLL_VIEWPORT);
}