Remix this project so that the cat can't pass through the wall *until* he gets the key by touching the key first. Use sensing blocks and if-then to solve. Take a look at the "key" block to see when it changes from "no" to "yes" I've included all of the pieces you need. Next steps and challenges: *Make *another* key on the right-side of the wall, so cat needs to collect key #2 to return. (Create a new sprite that will be the key.) *hide key once it's collected *Something else you discover--be creative!
