The replacement technique was already explained and illustrated in the previous tutorial. This one shows both how to use it with objects that have random parameters, and also with a 2D grid structure: something I have used a lot. I chose this gif as example for this tutorial: In the gif the positions of the tiles on one axis (x-axis) never change, and it moves along another axis (y-axis). We’re going to use a 2D grid of tiles of size 70 x 4.
