// Move the mouse across the screen as a sine wave. var robot = require("robotjs"); // Speed up the mouse. robot.setMouseDelay(2); var twoPI = Math.PI * 2.0; var screenSize = robot.getScreenSize(); var height = (screenSize.height / 2) - 10; var width = screenSize.width; for (var x = 0; x < width; x++) { y = height * Math.sin((twoPI * x) / width) + height; robot.moveMouse(x, y); }