KUDr@3900: /* $Id$ */
KUDr@3900: 
KUDr@3900: #ifndef  YAPF_COSTBASE_HPP
KUDr@3900: #define  YAPF_COSTBASE_HPP
KUDr@3900: 
KUDr@3900: struct CYapfCostBase {
KUDr@3900: 	static const TrackdirBits   c_upwards_slopes[16];
KUDr@3900: 
KUDr@3900: 	FORCEINLINE static bool stSlopeCost(TileIndex tile, Trackdir td)
KUDr@3900: 	{
KUDr@5139: 		if (IsDiagonalTrackdir(td)) {
celestar@5385: 			if (IsBridgeTile(tile)) {
KUDr@5139: 				// it is bridge ramp, check if we are entering the bridge
KUDr@5139: 				if (GetBridgeRampDirection(tile) != TrackdirToExitdir(td)) return false; // no, we are living it, no penalty
KUDr@5139: 				// we are entering the bridge
KUDr@5139: 				// if the tile slope is downwards, then bridge ramp has not upward slope
KUDr@5139: 				uint tile_slope = GetTileSlope(tile, NULL) & 0x0F;
KUDr@5139: 				if ((c_upwards_slopes[tile_slope] & TrackdirToTrackdirBits(ReverseTrackdir(td))) != 0) return false; // tile under ramp goes down, no penalty
KUDr@5139: 				// tile under ramp isn't going down, so ramp must go up
KUDr@3900: 				return true;
KUDr@5139: 			} else {
KUDr@5139: 				// not bridge ramp
KUDr@5139: 				if (IsTunnelTile(tile)) return false; // tunnel entry/exit doesn't slope
KUDr@5139: 				uint tile_slope = GetTileSlope(tile, NULL) & 0x0F;
KUDr@5139: 				if ((c_upwards_slopes[tile_slope] & TrackdirToTrackdirBits(td)) != 0) return true; // slopes uphill => apply penalty
KUDr@3900: 			}
KUDr@3900: 		}
KUDr@3900: 		return false;
KUDr@3900: 	}
KUDr@3900: };
KUDr@3900: 
KUDr@3900: struct CostRailSettings {
KUDr@3900: 	// look-ahead signal penalty
KUDr@3900: };
KUDr@3900: 
KUDr@3900: 
KUDr@3900: #endif /* YAPF_COSTBASE_HPP */