Add sleeping

scripts/oven/state/cooking.gd

@@ -16,12 +16,11 @@ func enter_from(state):
 	ctx.get_node("%item_holder").remove_enabled = false
 
 	ctx.get_node("cook_timer").start()
-	ctx.get_node("%coil").set_surface_material(0, mat)
 	ctx.get_node("status_light").light_color = Color.green
 	ctx.get_node("status_light").activate()
 
 func exit_to(state):
-	ctx.get_node("%coil").set_surface_material(0, null)
+	pass
 
 func on_coin_machine_coin_requirement_met(player):
 	assert(false, "coin machine should be disabled while growing")