TODO for Phase 3 (Simulation)

cars

model cars parking
- make vanished cars just park again, when possible
- when parking is full or no parking at goal road, roam until parking is found
code cleanup
- figure out responsibility btwn agents and managers, then fix up visibility
- rng should live in a scenario spec layer, not in the sim itself
- on a lane vs turn permeates so many places
better visualization
- draw moving / blocked colors (gradually more red as they wait longer)
- make lookahead buffer follow the shape of the road and extend into other lanes and stuff
start implementing a second AORTAish driving model
- then make cars park/unpark at the correct position
reversible sim

make them start and end at buildings
- trim the sidewalk path to the edge of a building
render overlapping peds reasonably

savestating a sim has nondet output due to hashes; switching to btree is kind of weird
- unit test that two savestates of same sim are equal
- consider overriding encoding for TurnID and such, instead of remembering to stick maps everywhere
diffing two sim states is tedious no matter what; is there a nice macro-driven deep equals we could do instead?
- will need programmatic diffs later for pointing out changes to players in A/B tests
consider refactoring car/ped sim
- basic structure with actions, react, stepping is same. SimQueue, lookahead, can goto? differs.