1 /* $Id$ */

     2 

     3 /** @file road_internal.h Functions used internally by the roads. */

     4 

     5 #ifndef ROAD_INTERNAL_H

     6 #define ROAD_INTERNAL_H

     7 

     8 #include "tile_cmd.h"

     9 

    10 /**

    11  * Clean up unneccesary RoadBits of a planed tile.

    12  * @param tile current tile

    13  * @param org_rb planed RoadBits

    14  * @return optimised RoadBits

    15  */

    16 RoadBits CleanUpRoadBits(const TileIndex tile, RoadBits org_rb);

    17 

    18 /**

    19  * Is it allowed to remove the given road bits from the given tile?

    20  * @param tile      the tile to remove the road from

    21  * @param remove    the roadbits that are going to be removed

    22  * @param owner     the actual owner of the roadbits of the tile

    23  * @param edge_road are the removed bits from a town?

    24  * @param rt        the road type to remove the bits from

    25  * @return true when it is allowed to remove the road bits

    26  */

    27 bool CheckAllowRemoveRoad(TileIndex tile, RoadBits remove, Owner owner, bool *edge_road, RoadType rt);

    28 

    29 /**

    30  * Draw the catenary for tram road bits

    31  * @param ti   information about the tile (position, slope)

    32  * @param tram the roadbits to draw the catenary for

    33  */

    34 void DrawTramCatenary(TileInfo *ti, RoadBits tram);

    35 

    36 #endif /* ROAD_INTERNAL_H */