diff --git a/assets/scripts/tilemap/generator.toy b/assets/scripts/tilemap/generator.toy
index c9dbe1d..060325b 100644
--- a/assets/scripts/tilemap/generator.toy
+++ b/assets/scripts/tilemap/generator.toy
@@ -33,6 +33,20 @@ var themes: [string] const = [
 ];
 
 
+//constants for generating maps
+var ROOM_MIN_WIDTH: int const = 4; //minimum safe value 4
+var ROOM_MIN_HEIGHT: int const = 4;
+
+var ROOM_MAX_WIDTH: int const = 12;
+var ROOM_MAX_HEIGHT: int const = 12;
+
+var CELL_WIDTH: int const = 16; //minimum safe value ROOM_MAX_* + 4
+var CELL_HEIGHT: int const = 16;
+
+var CELL_COUNT_X: int const = 3;
+var CELL_COUNT_Y: int const = 3;
+
+
 //raw string data
 var tilemap: [int] = null;