--- a/src/landscape.h	Thu Apr 19 14:48:10 2007 +0000
+++ b/src/landscape.h	Tue Jun 12 11:56:35 2007 +0000
@@ -2,6 +2,9 @@
 
 /** @file landscape.h */
 
+#ifndef LANDSCAPE_H
+#define LANDSCAPE_H
+
 enum {
 	SNOW_LINE_MONTHS = 12,
 	SNOW_LINE_DAYS   = 32,
@@ -17,3 +20,42 @@
 byte GetSnowLine(void);
 byte HighestSnowLine(void);
 void ClearSnowLine(void);
+
+bool IsValidTile(TileIndex tile);
+
+uint GetPartialZ(int x, int y, Slope corners);
+uint GetSlopeZ(int x, int y);
+
+static inline Point RemapCoords(int x, int y, int z)
+{
+	Point pt;
+	pt.x = (y - x) * 2;
+	pt.y = y + x - z;
+	return pt;
+}
+
+static inline Point RemapCoords2(int x, int y)
+{
+	return RemapCoords(x, y, GetSlopeZ(x, y));
+}
+
+void DrawFoundation(TileInfo *ti, uint f);
+
+void DoClearSquare(TileIndex tile);
+void RunTileLoop();
+
+uint32 GetTileTrackStatus(TileIndex tile, TransportType mode);
+void GetAcceptedCargo(TileIndex tile, AcceptedCargo ac);
+void ChangeTileOwner(TileIndex tile, PlayerID old_player, PlayerID new_player);
+void AnimateTile(TileIndex tile);
+void ClickTile(TileIndex tile);
+void GetTileDesc(TileIndex tile, TileDesc *td);
+
+void InitializeLandscape();
+void GenerateLandscape(byte mode);
+
+void ConvertGroundTilesIntoWaterTiles();
+
+TileIndex AdjustTileCoordRandomly(TileIndex a, byte rng);
+
+#endif /* LANDSCAPE_H */