so im making a 3d engine and i have most parts of it finished, the only parts i have left are clipping and collisions, i cant figure out how to do the clipping, can someone help me? https://scratch.mit.edu/projects/1011896889/

You should ask here https://scratch.mit.edu/studios/347956 or here https://scratch.mit.edu/studios/32030084 they do great with this kinda stuff.