mirror of https://github.com/OpenTTD/OpenTTD.git
52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
/*
|
|
* 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 autoslope.h Functions related to autoslope. */
|
|
|
|
#ifndef AUTOSLOPE_H
|
|
#define AUTOSLOPE_H
|
|
|
|
#include "company_func.h"
|
|
#include "depot_func.h"
|
|
#include "tile_map.h"
|
|
|
|
/**
|
|
* Autoslope check for tiles with an entrance on an edge.
|
|
* E.g. depots and non-drive-through-road-stops.
|
|
*
|
|
* The test succeeds if the slope is not steep and at least one corner of the entrance edge is on the TileMaxZ() level.
|
|
*
|
|
* @note The test does not check if autoslope is enabled at all.
|
|
*
|
|
* @param tile The tile.
|
|
* @param z_new New TileZ.
|
|
* @param tileh_new New TileSlope.
|
|
* @param entrance Entrance edge.
|
|
* @return true iff terraforming is allowed.
|
|
*/
|
|
inline bool AutoslopeCheckForEntranceEdge(TileIndex tile, int z_new, Slope tileh_new, DiagDirection entrance)
|
|
{
|
|
if (GetTileMaxZ(tile) != z_new + GetSlopeMaxZ(tileh_new)) return false;
|
|
return ((tileh_new == SLOPE_FLAT) || CanBuildDepotByTileh(entrance, tileh_new));
|
|
}
|
|
|
|
/**
|
|
* Tests if autoslope is enabled for _current_company.
|
|
*
|
|
* Autoslope is disabled for town/industry construction.
|
|
*
|
|
* @return true iff autoslope is enabled.
|
|
*/
|
|
inline bool AutoslopeEnabled()
|
|
{
|
|
return (_settings_game.construction.autoslope &&
|
|
(_current_company < MAX_COMPANIES ||
|
|
(_current_company == OWNER_NONE && _game_mode == GM_EDITOR)));
|
|
}
|
|
|
|
#endif /* AUTOSLOPE_H */
|