Credit to @CodingBio for engine and to @-Rex-Test- and @Geotale for triangle filler. ENGINE TUTORIAL: https://scratch.mit.edu/studios/32152322 TRIANGLE FILLER: https://scratch.mit.edu/projects/509029922/ Move with WASD. Rotate camera with mouse. This is still not finished. And by the way, going through a shape flips the controls. Flip them back by re-going-through.