# yapf_costbase.hpp

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    00001 /* $Id: yapf_costbase.hpp 17248 2009-08-21 20:21:05Z 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  YAPF_COSTBASE_HPP
    00013 #define  YAPF_COSTBASE_HPP
    00014
    00015 struct CYapfCostBase {
    00016   FORCEINLINE static bool stSlopeCost(TileIndex tile, Trackdir td)
    00017   {
    00018     if (IsDiagonalTrackdir(td)) {
    00019       if (IsBridgeTile(tile)) {
    00020         /* it is bridge ramp, check if we are entering the bridge */
    00021         if (GetTunnelBridgeDirection(tile) != TrackdirToExitdir(td)) return false; // no, we are leaving it, no penalty
    00022         /* we are entering the bridge */
    00023         Slope tile_slope = GetTileSlope(tile, NULL);
    00024         Axis axis = DiagDirToAxis(GetTunnelBridgeDirection(tile));
    00025         return !HasBridgeFlatRamp(tile_slope, axis);
    00026       } else {
    00027         /* not bridge ramp */
    00028         if (IsTunnelTile(tile)) return false; // tunnel entry/exit doesn't slope
    00029         Slope tile_slope = GetTileSlope(tile, NULL);
    00030         return IsUphillTrackdir(tile_slope, td); // slopes uphill => apply penalty
    00031       }
    00032     }
    00033     return false;
    00034   }
    00035 };
    00036
    00037 struct CostRailSettings {
    00038   /* look-ahead signal penalty */
    00039 };
    00040
    00041
    00042 #endif /* YAPF_COSTBASE_HPP */