# tunnelbridge.h

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    00001 /* $Id: tunnelbridge.h 18809 2010-01-15 16:41:15Z rubidium $ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * 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.
    00006  * 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.
    00007  * 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/>.
    00008  */
    00009
    00012 #ifndef TUNNELBRIDGE_H
    00013 #define TUNNELBRIDGE_H
    00014
    00015 #include "map_func.h"
    00016
    00021 static inline uint GetTunnelBridgeLength(TileIndex begin, TileIndex end)
    00022 {
    00023   int x1 = TileX(begin);
    00024   int y1 = TileY(begin);
    00025   int x2 = TileX(end);
    00026   int y2 = TileY(end);
    00027
    00028   return abs(x2 + y2 - x1 - y1) - 1;
    00029 }
    00030
    00031 extern TileIndex _build_tunnel_endtile;
    00032
    00033 #endif /* TUNNELBRIDGE_H */