How would I detect an impact of a moving entity with the world, not another entitiy.
Or!
Does the world count as an entitiy(0)? In which case I cacn register FM_Touch
Or!
Using maths I can work out the ETA of the moving entity and the world and use a set_task to make it explode - and then FM_Touch in case it hits an entity such as a player which would block the path to the wall