1 files changed, 26 insertions, 0 deletions
diff --git a/yapf/yapf_costbase.hpp b/yapf/yapf_costbase.hpp
new file mode 100644
index 000000000..7aa141bc8
--- /dev/null
+++ b/yapf/yapf_costbase.hpp
@@ -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 */