1 files changed, 6 insertions, 0 deletions
diff --git a/src/heightmap.h b/src/heightmap.h
index 1bbe197d9..c30ef0d9a 100644
--- a/src/heightmap.h
+++ b/src/heightmap.h
@@ -37,4 +37,10 @@ void LoadHeightmap(char *filename);
  */
 void FlatEmptyWorld(byte tile_height);
 
+/**
+ * This function takes care of the fact that land in OpenTTD can never differ
+ * more than 1 in height
+ */
+void FixSlopes();
+
 #endif /* HEIGHTMAP_H */