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frosch

(svn r21262) -Fix (r18708)[FS#4246]: Custom station foundations using the 'simple foundations'-method did not draw any sprite for WSE-slopes when there are foundations on both neighboured tiles in the north. As there must be at least one sprite to provide the correct offset for the groundsprite draw the (empty) default foundation sprite in that case.

/* $Id$ */

/*
 * 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 road_internal.h Functions used internally by the roads. */

#ifndef ROAD_INTERNAL_H
#define ROAD_INTERNAL_H

#include "tile_cmd.h"
#include "road_type.h"

/**
 * Clean up unneccesary RoadBits of a planed tile.
 * @param tile current tile
 * @param org_rb planed RoadBits
 * @return optimised RoadBits
 */
RoadBits CleanUpRoadBits(const TileIndex tile, RoadBits org_rb);

CommandCost CheckAllowRemoveRoad(TileIndex tile, RoadBits remove, Owner owner, RoadType rt, DoCommandFlag flags, bool town_check = true);

/**
 * Draw the catenary for tram road bits
 * @param ti   information about the tile (position, slope)
 * @param tram the roadbits to draw the catenary for
 */
void DrawTramCatenary(const TileInfo *ti, RoadBits tram);

#endif /* ROAD_INTERNAL_H */