2 

     2 

     3 /** @file tunnel_map.cpp */

     3 /** @file tunnel_map.cpp */

     4 

     4 

     5 #include "stdafx.h"

     5 #include "stdafx.h"

     6 #include "openttd.h"

     6 #include "openttd.h"

     8 #include "tunnel_map.h"

     7 #include "tunnel_map.h"

     9 

    10 

    10 /**

    11 /**

    11  * Gets the other end of the tunnel. Where a vehicle would reappear when it

    12  * Gets the other end of the tunnel. Where a vehicle would reappear when it

    12  * enters at the given tile.

    13  * enters at the given tile.

    13  * @param tile the tile to search from.

    14  * @param tile the tile to search from.

    14  * @return the tile of the other end of the tunnel.

    15  * @return the tile of the other end of the tunnel.

    15  */

    16  */

    16 TileIndex GetOtherTunnelEnd(TileIndex tile)

    17 TileIndex GetOtherTunnelEnd(TileIndex tile)

    17 {

    18 {

    19 	TileIndexDiff delta = TileOffsByDiagDir(dir);

    20 	TileIndexDiff delta = TileOffsByDiagDir(dir);

    20 	uint z = GetTileZ(tile);

    21 	uint z = GetTileZ(tile);

    21 

    22 

    22 	dir = ReverseDiagDir(dir);

    23 	dir = ReverseDiagDir(dir);

    23 	do {

    24 	do {

    24 		tile += delta;

    25 		tile += delta;

    25 	} while (

    26 	} while (

    26 		!IsTunnelTile(tile) ||

    27 		!IsTunnelTile(tile) ||

    28 		GetTileZ(tile) != z

    29 		GetTileZ(tile) != z

    29 	);

    30 	);

    30 

    31 

    31 	return tile;

    32 	return tile;

    32 }

    33 }

    50 	} while (z < height);

    51 	} while (z < height);

    51 

    52 

    52 	return

    53 	return

    53 		z == height &&

    54 		z == height &&

    54 		IsTunnelTile(tile) &&

    55 		IsTunnelTile(tile) &&

    56 }

    57 }

    57 

    58 

    58 /**

    59 /**

    59  * Is there a tunnel in the way in any direction?

    60  * Is there a tunnel in the way in any direction?

    60  * @param tile the tile to search from.

    61  * @param tile the tile to search from.