(svn r3913) Move declarations to rail_map.h so rail.h is dependent on rail_map.h and not the other way round

rail_map.h

@@ -3,9 +3,73 @@
 #ifndef RAIL_MAP_H
 #define RAIL_MAP_H
 
-#include "rail.h"
+#include "direction.h"
 #include "tile.h"
-#include "waypoint.h"
+
+
+typedef enum RailTileType {
+	RAIL_TYPE_NORMAL         = 0x0,
+	RAIL_TYPE_SIGNALS        = 0x40,
+	RAIL_TYPE_UNUSED         = 0x80, /* XXX: Maybe this could become waypoints? */
+	RAIL_TYPE_DEPOT_WAYPOINT = 0xC0, /* Is really depots and waypoints... */
+	RAIL_TILE_TYPE_MASK      = 0xC0
+} RailTileType;
+
+static inline RailTileType GetRailTileType(TileIndex t)
+{
+	assert(IsTileType(t, MP_RAILWAY));
+	return _m[t].m5 & RAIL_TILE_TYPE_MASK;
+}
+
+
+/** These specify the subtype when the main rail type is
+ * RAIL_TYPE_DEPOT_WAYPOINT */
+typedef enum RailTileSubtypes {
+	RAIL_SUBTYPE_DEPOT    = 0x00,
+	RAIL_SUBTYPE_WAYPOINT = 0x04,
+	RAIL_SUBTYPE_MASK     = 0x3C
+} RailTileSubtype;
+
+
+typedef enum RailTypes {
+	RAILTYPE_RAIL   = 0,
+	RAILTYPE_MONO   = 1,
+	RAILTYPE_MAGLEV = 2,
+	RAILTYPE_END,
+	RAILTYPE_MASK   = 0x3,
+	INVALID_RAILTYPE = 0xFF
+} RailType;
+
+static inline RailType GetRailType(TileIndex t)
+{
+	return (RailType)GB(_m[t].m3, 0, 4);
+}
+
+
+/** These are used to specify a single track.
+ * Can be translated to a trackbit with TrackToTrackbit */
+typedef enum Track {
+	TRACK_X     = 0,
+	TRACK_Y     = 1,
+	TRACK_UPPER = 2,
+	TRACK_LOWER = 3,
+	TRACK_LEFT  = 4,
+	TRACK_RIGHT = 5,
+	TRACK_END,
+	INVALID_TRACK = 0xFF
+} Track;
+
+
+/** Bitfield corresponding to Track */
+typedef enum TrackBits {
+	TRACK_BIT_X     = 1U << TRACK_X,
+	TRACK_BIT_Y     = 1U << TRACK_Y,
+	TRACK_BIT_UPPER = 1U << TRACK_UPPER,
+	TRACK_BIT_LOWER = 1U << TRACK_LOWER,
+	TRACK_BIT_LEFT  = 1U << TRACK_LEFT,
+	TRACK_BIT_RIGHT = 1U << TRACK_RIGHT,
+	TRACK_BIT_MASK  = 0x3FU
+} TrackBits;
 
 
 static inline DiagDirection GetRailDepotDirection(TileIndex t)
@@ -16,7 +80,7 @@ static inline DiagDirection GetRailDepotDirection(TileIndex t)
 
 static inline TrackBits GetRailWaypointBits(TileIndex t)
 {
-	return _m[t].m5 & RAIL_WAYPOINT_TRACK_MASK ? TRACK_BIT_Y : TRACK_BIT_X;
+	return _m[t].m5 & 1 ? TRACK_BIT_Y : TRACK_BIT_X;
 }