(svn r16965) -Codechange: use tile area instead of sets of variables for the station joiner code.

src/station_type.h

@@ -6,6 +6,7 @@
 #define STATION_TYPE_H
 
 #include "core/enum_type.hpp"
+#include "tile_type.h"
 
 typedef uint16 StationID;
 typedef uint16 RoadStopID;
@@ -81,4 +82,29 @@ enum {
 	MAX_LENGTH_STATION_NAME_PIXELS = 180, ///< The maximum length of a station name in pixels
 };
 
+/** Represents the covered area of e.g. a rail station */
+struct TileArea {
+	/** Just construct this tile area */
+	TileArea() {}
+
+	/**
+	 * Construct this tile area with some set values
+	 * @param tile the base tile
+	 * @param w the width
+	 * @param h the height
+	 */
+	TileArea(TileIndex tile, uint8 w, uint8 h) : tile(tile), w(w), h(h) {}
+
+	/**
+	 * Construct this tile area based on two points.
+	 * @param start the start of the area
+	 * @param end   the end of the area
+	 */
+	TileArea(TileIndex start, TileIndex end);
+
+	TileIndex tile; ///< The base tile of the area
+	uint8 w;        ///< The width of the area
+	uint8 h;        ///< The height of the area
+};
+
 #endif /* STATION_TYPE_H */