The ball catches the dog! Drag the dog and the obstacles and then watch the ball joining the space dog. Turbowarp recommended for inteligence highter than 3 link: https://turbowarp.org/1084335220?turbo&fps=240). Highter intelligence will make your ball more inteligent to pass throught obstacles but will make your project laggier. Highteer speed will make the ball's movement go quicker but will make more likely that the ball gets stuck etween two green things. On Scratch, I reccomend using the speed at 4 and the intelligence at 3.
Everything by me. I got inspired by fractals and by a tutorial that showed how a very famous chess game on Scratch does to works.