I havent worked on that project for a while at this point, mostly because I wanted to make into different projects. For more info, check out this topic.
Well, sorry, but this (Newer SMB Arcade) is not being developed anymore currently, although I did release the physics engine (and finished it, including the ability to add more platforms easily, the ability to make differently-shaped walls and ceilings, and more!) in a separate topic called “Advanced Platforming Collision Engine” (which I would link to, but it hasn’t been approved yet at the time of me writing this.) I hope you like it and can use it, it’s not a huge project, so I think someone …