Hey there! I stumbled upon this when looking for a way to implement bullets in my game. I noticed the example repository was made in Godot 3. I don't know much about Godot, is this implementation possible or necessary in Godot 4?
Hey, it's definitely possible in Godot 4, but we did make some changes when porting the game from godot 3 to godot 4.
The main difference is that rather than adding a lot of collision shapes to a single area via the physics server, we are now adding separate area instances with , so the bullets now apply their transform to their registered area id rather than a shape.
Kind of like this:
As of it being necessary, can't say for sure as Godot4 introduced a ton of performance improvements (this implementation will probably still run way faster, but it may or may not be necessary depending on your particular use case).
I'd say give it a try, specially if you wanna learn a bit more on how the physics server works, and the extra performance will definitely not hurt!