Source code for the Learn JavaScript by playing RuneScape series on the Learn Code By Gaming YouTube channel.

This bot is for educational purposes only.

Watch the tutorial here: https://www.youtube.com/playlist?list=PL1m2M8LQlzfJjTJrovnq2lBnov_g0ZpN3

Check the output of robot.getScreenSize(). If the result you're given do not match what you expect, ie. { width: 1536, height: 864 } when you were expecting 1920x1080, you can do a few things to correct this. In the Windows display settings, if the application scaling is not 100%, try changing it to 100%. You can also sometimes change this on a per-application basis with the "Disable display scaling on high DPI settings" property. Alternatively, you can write a function to translate your coordinates:

function coordinate(x) {
    return x * (1536 / 1920);
}