(svn r11663) -Codechange: moving of the road related types and functions.

src/road_internal.h

@@ -0,0 +1,34 @@
+/* $Id$ */
+
+/** @file road_internal.h Functions used internally by the roads. */
+
+#ifndef ROAD_INTERNAL_H
+#define ROAD_INTERNAL_H
+
+/**
+ * Clean up unneccesary RoadBits of a planed tile.
+ * @param tile current tile
+ * @param org_rb planed RoadBits
+ * @return optimised RoadBits
+ */
+RoadBits CleanUpRoadBits(const TileIndex tile, RoadBits org_rb);
+
+/**
+ * Is it allowed to remove the given road bits from the given tile?
+ * @param tile      the tile to remove the road from
+ * @param remove    the roadbits that are going to be removed
+ * @param owner     the actual owner of the roadbits of the tile
+ * @param edge_road are the removed bits from a town?
+ * @param rt        the road type to remove the bits from
+ * @return true when it is allowed to remove the road bits
+ */
+bool CheckAllowRemoveRoad(TileIndex tile, RoadBits remove, Owner owner, bool *edge_road, RoadType rt);
+
+/**
+ * Draw the catenary for tram road bits
+ * @param ti   information about the tile (position, slope)
+ * @param tram the roadbits to draw the catenary for
+ */
+void DrawTramCatenary(TileInfo *ti, RoadBits tram);
+
+#endif /* ROAD_INTERNAL_H */