diff -r 5ba7f20a14ca -r 2c84ed52709d yapf/yapf_costbase.hpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/yapf/yapf_costbase.hpp	Sat May 27 16:12:16 2006 +0000
@@ -0,0 +1,26 @@
+/* $Id$ */
+
+#ifndef  YAPF_COSTBASE_HPP
+#define  YAPF_COSTBASE_HPP
+
+struct CYapfCostBase {
+	static const TrackdirBits   c_upwards_slopes[16];
+
+	FORCEINLINE static bool stSlopeCost(TileIndex tile, Trackdir td)
+	{
+		if (IsDiagonalTrackdir(td)) {
+			uint tile_slope = GetTileSlope(tile, NULL) & 0x0F;
+			if ((c_upwards_slopes[tile_slope] & TrackdirToTrackdirBits(td)) != 0) {
+				return true;
+			}
+		}
+		return false;
+	}
+};
+
+struct CostRailSettings {
+	// look-ahead signal penalty
+};
+
+
+#endif /* YAPF_COSTBASE_HPP */