abstreet/docs/TODO_phase3.md

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)
  • draw stop buffer in front/behind of cars
  • draw cars in slightly different colors, to distinguish them better

• start implementing a second AORTAish driving model

  • then make cars park/unpark at the correct position

• reversible sim

bikes

• model bikes as slow cars

pedestrians

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

General

• 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
• 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.