abstreet/docs/TODO_phase3.md

TODO for Phase 3 (Simulation)

cars

• code cleanup

  • figure out responsibility btwn agents and managers, then fix up visibility
  • things like ParkingSimState have so many methods -- some are only meant for spawner, or driving/walking to query. separate out some traits.
  • 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

• reversible sim

• be careful

  • could see if we ever have a lookahead constraint to deaccel more than what we're capable of. it might mask problems. but since things like accel_to_stop_in_dist don't have a careful notion of how much time will pass, they recommend big rates sometimes.
  • no way for an agent to request a turn and ASAP have it granted. are there cases where they might slow down unnecessarily?

bikes

• model bikes as slow cars

pedestrians

• render overlapping peds reasonably

General

• savestating a sim has nondet output due to hashes; switching to btree is kind of weird
  • 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.