Step 7. Variables in p5.js (mouseX, mouseY)

Daniel Shiffman introduces the fundamental concept of a "variable" in programming. P5 has many variables, including ones that track the mouse position. This leads to our first really cool World, where moving the mouse draws a circle at that position. Click the image to run the World. Click "Clone and Edit" and customise it. Go crazy adding objects. You cannot cause any damage!