Use arrow keys or WASD to move and press space to paint. To change the color, hover your mouse in the top left corner. To clear, press R or click the green flag. To zoom in or out, hover your mouse over the top right corner. To save your current drawing, press J to get a save code, and load it by pressing K. Delete Blocks around you by pressing and holding E. If the project is lagging, press L to slightly reduce lag.
IF YOU WANT TO USE THIS ENGINE OR FIND OUT HOW IT WORKS, GO TO THIS LINK https://scratch.mit.edu/projects/614366409/ It is a more copy-friendly version and also explains how each part of the engine works. It also has some extra features. This is more of a project that I used to make a top-down scrolling camera. I then added a little system to save x, y, and color values into a list, along with a bunch of other features so that you could actually do something with it.