Help with moving object collision

Hello, im doing an assignment for university and i decided to do a maze game, i have done the collision detection for the walls and that works fine but i had an idea of having circle representing people that move and you have to get past them. I’ve tried puttin the circles inside the walls for the maze which applies to the collision code and it works slightly but you can go over the top of it. Can anyone help me please :smiley: