acity = this.checked ? "1" : "0";
            }
          });
        }

        function initializeGUI() {
          /* GUI Controls */
          if (typeof lil !== "undefined" && asciiEffect) {
            // Clean up existing GUI instance if it exists
            if (guiInstance) {
              guiInstance.destroy();
              guiInstance = null;
            }

            const gui = new lil.GUI();
            guiInstance = gui; // Store reference to prevent duplicates
            const folder = gu