--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/road_map.cpp Wed Jan 10 18:12:09 2007 +0000
@@ -0,0 +1,54 @@
+/* $Id$ */
+
+#include "stdafx.h"
+#include "openttd.h"
+#include "bridge_map.h"
+#include "functions.h"
+#include "road_map.h"
+#include "station.h"
+#include "tunnel_map.h"
+#include "station_map.h"
+#include "depot.h"
+
+
+RoadBits GetAnyRoadBits(TileIndex tile)
+{
+ switch (GetTileType(tile)) {
+ case MP_STREET:
+ switch (GetRoadTileType(tile)) {
+ default:
+ case ROAD_TILE_NORMAL: return GetRoadBits(tile);
+ case ROAD_TILE_CROSSING: return GetCrossingRoadBits(tile);
+ case ROAD_TILE_DEPOT: return DiagDirToRoadBits(GetRoadDepotDirection(tile));
+ }
+
+ case MP_STATION:
+ if (!IsRoadStopTile(tile)) return 0;
+ return DiagDirToRoadBits(GetRoadStopDir(tile));
+
+ case MP_TUNNELBRIDGE:
+ if (IsTunnel(tile)) {
+ if (GetTunnelTransportType(tile) != TRANSPORT_ROAD) return 0;
+ return DiagDirToRoadBits(ReverseDiagDir(GetTunnelDirection(tile)));
+ } else {
+ if (GetBridgeTransportType(tile) != TRANSPORT_ROAD) return 0;
+ return DiagDirToRoadBits(ReverseDiagDir(GetBridgeRampDirection(tile)));
+ }
+
+ default: return 0;
+ }
+}
+
+
+TrackBits GetAnyRoadTrackBits(TileIndex tile)
+{
+ uint32 r;
+
+ // Don't allow local authorities to build roads through road depots or road stops.
+ if ((IsTileType(tile, MP_STREET) && IsTileDepotType(tile, TRANSPORT_ROAD)) || IsTileType(tile, MP_STATION)) {
+ return 0;
+ }
+
+ r = GetTileTrackStatus(tile, TRANSPORT_ROAD);
+ return (byte)(r | (r >> 8));
+}