refactor

resources/buildings/building.gd

@@ -0,0 +1,13 @@
+class_name Building
+extends Resource
+
+enum Type { FLOOR, WALL, DOOR, ROOF }
+
+@export var building_id: StringName = &""
+@export var display_name: String = ""
+@export var type: Type = Type.WALL
+@export var size: Vector3 = Vector3(1, 1, 1)
+@export var color: Color = Color.GRAY
+@export var icon: Texture2D
+@export var material_item: Item
+@export var material_cost: int = 1