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create random maps and walk around in 2d and 3d
WIP - bare minimum to get started. motion and 3d projection and very rudimentary map making
changelog
0001.PRE: tiles are clickable (in both 2D and 3D!) to toggle emptiness
0002.PRE: whole 30*8 x 17*8 map space can be used, wraps around modulo
0003.PRE: made a "queue" (array, sorted by z-order - could be optimized by using a more appropriate data structure) to get okay-ish z-ordering of rectangles not matter which way we're facing
0004.PRE: flyover / walk around
0005.PRE: flyover and walkblock (block player from walking into walls) settable independently; walkblock keeps the x/y component if possible to allow for smooth motion
0006.PRE: better menu handling, shows enabled options
0007.PRE: cosmetics
roadmap:
* algorithmic generation of labyrinths
* safetri will compute intersections of polygons so I can finally use tri() safely even when some points are outside the screen