It was very difficult, tiresome, and admittedly painful, I had to make multiple versions implemented differently, and they all sucked at something different. This one was not the last, I just figured out how to fix it from another one.
It’s still very buggy but it works.
Feel free to use it but I don’t recommend making 2.5D platformer games with GDevelop for now
vote for a 25d platformer engine behavior please 
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