diff --git a/src/script/api/script_tile.hpp b/src/script/api/script_tile.hpp
--- a/src/script/api/script_tile.hpp
+++ b/src/script/api/script_tile.hpp
@@ -155,9 +155,11 @@ public:
 	 * @param width The width of the rectangle.
 	 * @param height The height of the rectangle.
 	 * @pre ScriptMap::IsValidTile(tile).
+	 * @pre width >= 0.
+	 * @pre height >= 0.
 	 * @return True if it is buildable, false if not.
 	 */
-	static bool IsBuildableRectangle(TileIndex tile, uint width, uint height);
+	static bool IsBuildableRectangle(TileIndex tile, SQInteger width, SQInteger height);
 
 	/**
 	 * Checks whether the given tile is actually a sea tile.
@@ -308,7 +310,7 @@ public:
 	 * @pre ScriptMap::IsValidTile(tile).
 	 * @return The height of the lowest corner of the tile, ranging from 0 to 15.
 	 */
-	static int32 GetMinHeight(TileIndex tile);
+	static SQInteger GetMinHeight(TileIndex tile);
 
 	/**
 	 * Get the maximal height on a tile.
@@ -317,7 +319,7 @@ public:
 	 * @pre ScriptMap::IsValidTile(tile).
 	 * @return The height of the highest corner of the tile, ranging from 0 to 15.
 	 */
-	static int32 GetMaxHeight(TileIndex tile);
+	static SQInteger GetMaxHeight(TileIndex tile);
 
 	/**
 	 * Get the height of a certain corner of a tile.
@@ -327,7 +329,7 @@ public:
 	 * @pre ScriptMap::IsValidTile(tile).
 	 * @return The height of the lowest corner of the tile, ranging from 0 to 15.
 	 */
-	static int32 GetCornerHeight(TileIndex tile, Corner corner);
+	static SQInteger GetCornerHeight(TileIndex tile, Corner corner);
 
 	/**
 	 * Get the owner of the tile.
@@ -372,7 +374,7 @@ public:
 	 * @pre radius >= 0.
 	 * @return Values below 8 mean no acceptance; the more the better.
 	 */
-	static int32 GetCargoAcceptance(TileIndex tile, CargoID cargo_type, int width, int height, int radius);
+	static SQInteger GetCargoAcceptance(TileIndex tile, CargoID cargo_type, SQInteger width, SQInteger height, SQInteger radius);
 
 	/**
 	 * Checks how many producers in the radius produces this cargo.
@@ -389,7 +391,7 @@ public:
 	 * @pre radius >= 0.
 	 * @return The number of producers that produce this cargo within radius of the tile.
 	 */
-	static int32 GetCargoProduction(TileIndex tile, CargoID cargo_type, int width, int height, int radius);
+	static SQInteger GetCargoProduction(TileIndex tile, CargoID cargo_type, SQInteger width, SQInteger height, SQInteger radius);
 
 	/**
 	 * Get the manhattan distance from the tile to the tile.
@@ -397,7 +399,7 @@ public:
 	 * @param tile_to The tile to get the distance to.
 	 * @return The distance between the two tiles.
 	 */
-	static int32 GetDistanceManhattanToTile(TileIndex tile_from, TileIndex tile_to);
+	static SQInteger GetDistanceManhattanToTile(TileIndex tile_from, TileIndex tile_to);
 
 	/**
 	 * Get the square distance from the tile to the tile.
@@ -405,7 +407,7 @@ public:
 	 * @param tile_to The tile to get the distance to.
 	 * @return The distance between the two tiles.
 	 */
-	static int32 GetDistanceSquareToTile(TileIndex tile_from, TileIndex tile_to);
+	static SQInteger GetDistanceSquareToTile(TileIndex tile_from, TileIndex tile_to);
 
 	/**
 	 * Raise the given corners of the tile. The corners can be combined,
@@ -422,7 +424,7 @@ public:
 	 * @exception ScriptTile::ERR_TILE_TOO_HIGH
 	 * @return 0 means failed, 1 means success.
 	 */
-	static bool RaiseTile(TileIndex tile, int32 slope);
+	static bool RaiseTile(TileIndex tile, Slope slope);
 
 	/**
 	 * Lower the given corners of the tile. The corners can be combined,
@@ -439,7 +441,7 @@ public:
 	 * @exception ScriptTile::ERR_TILE_TOO_LOW
 	 * @return 0 means failed, 1 means success.
 	 */
-	static bool LowerTile(TileIndex tile, int32 slope);
+	static bool LowerTile(TileIndex tile, Slope slope);
 
 	/**
 	 * Level all tiles in the rectangle between start_tile and end_tile so they
@@ -489,7 +491,7 @@ public:
 	 * @game @pre Valid ScriptCompanyMode active in scope.
 	 * @return True if and only if a tree was added on any of the tiles in the rectangle.
 	 */
-	static bool PlantTreeRectangle(TileIndex tile, uint width, uint height);
+	static bool PlantTreeRectangle(TileIndex tile, SQInteger width, SQInteger height);
 
 	/**
 	 * Find out if this tile is within the rating influence of a town.