It is a pen that allows you to draw on paper as if ink had smeared on it.
I am drawing a translucent square while changing its orientation. By changing the direction of the square, it creates a bleeding atmosphere.
The squares are oriented towards the sprites that follow the mouse a little later. We make full use of the “Move () step” block to draw rectangles with different orientations.
If you draw early, the lines will be cut off, so draw slowly.