The game is really good, even addictive, but one question that’s been keeping me up at night is, how did you do the 3D rotation with 2D sprites?
20 days ago(+2)
Heh, the game is a little insane for this, but first basically I manually made pixel art frames for each tile, to allow smoothly rotating them between the north/south/east/west camera directions. There's no detail on the tiles here - the most important part is that they cleanly tile the plane with no pixel gaps.
Then, the game just has a 3D coordinate system for everything internally, despite using a 2D renderer, and a big table of matrices for transforming the 3D coordinates to 2D locations + Z indices.