distinguish parked cars that have a trip scheduled or not

game/src/render/map.rs

@@ -457,7 +457,12 @@ impl AgentColorScheme {
                         CarStatus::Debug => cs.get_def("debug car", Color::BLUE.alpha(0.8)),
                         CarStatus::Moving => cs.get_def("moving car", Color::CYAN),
                         CarStatus::Stuck => cs.get_def("stuck car", Color::rgb(222, 184, 135)),
-                        CarStatus::Parked => cs.get_def("parked car", Color::rgb(180, 233, 76)),
+                        CarStatus::ParkedWithoutTrip => {
+                            cs.get_def("parked car without trip", Color::rgb(200, 233, 176))
+                        }
+                        CarStatus::ParkedWithTrip => {
+                            cs.get_def("parked car with trip", Color::rgb(180, 233, 76))
+                        }
                     }
                 }
             }
@@ -472,7 +477,7 @@ impl AgentColorScheme {
                 // TODO Hard to see on the greenish bike lanes? :P
                 CarStatus::Moving => cs.get_def("moving bike", Color::GREEN),
                 CarStatus::Stuck => cs.get_def("stuck bike", Color::RED),
-                CarStatus::Parked => panic!("Can't have a parked bike {}", input.id),
+                CarStatus::ParkedWithoutTrip | CarStatus::ParkedWithTrip => unreachable!(),
             },
             _ => self.by_metadata(&input.metadata),
         }

sim/src/mechanics/car.rs

@@ -154,10 +154,10 @@ impl Car {
                 CarState::WaitingToAdvance => CarStatus::Stuck,
                 CarState::Crossing(_, _) => CarStatus::Moving,
                 // Eh they're technically moving, but this is a bit easier to spot
-                CarState::Unparking(_, _, _) => CarStatus::Parked,
-                CarState::Parking(_, _, _) => CarStatus::Parked,
+                CarState::Unparking(_, _, _) => CarStatus::ParkedWithTrip,
+                CarState::Parking(_, _, _) => CarStatus::ParkedWithTrip,
                 // Changing color for idling buses is helpful
-                CarState::Idling(_, _) => CarStatus::Parked,
+                CarState::Idling(_, _) => CarStatus::ParkedWithTrip,
             },
             on: self.router.head(),
             label: if self.vehicle.vehicle_type == VehicleType::Bus {

sim/src/mechanics/parking.rs

@@ -1,4 +1,6 @@
-use crate::{AgentMetadata, CarID, CarStatus, DrawCarInput, ParkedCar, ParkingSpot, Vehicle};
+use crate::{
+    AgentMetadata, CarID, CarStatus, DrawCarInput, ParkedCar, ParkingSpot, TripManager, Vehicle,
+};
 use abstutil::{
     deserialize_btreemap, deserialize_multimap, serialize_btreemap, serialize_multimap, MultiMap,
 };
@@ -142,27 +144,37 @@ impl ParkingSimState {
         self.dynamically_reserved_cars.remove(&p.vehicle.id);
     }
 
-    pub fn get_draw_cars(&self, id: LaneID, map: &Map) -> Vec<DrawCarInput> {
+    pub fn get_draw_cars(&self, id: LaneID, map: &Map, trips: &TripManager) -> Vec<DrawCarInput> {
         let mut cars = Vec::new();
         if let Some(ref lane) = self.onstreet_lanes.get(&id) {
             for spot in lane.spots() {
                 if let Some(car) = self.occupants.get(&spot) {
-                    cars.push(self.get_draw_car(*car, map).unwrap());
+                    cars.push(self.get_draw_car(*car, map, trips).unwrap());
                 }
             }
         }
         cars
     }
 
-    pub fn get_draw_car(&self, id: CarID, map: &Map) -> Option<DrawCarInput> {
+    pub fn get_draw_car(&self, id: CarID, map: &Map, trips: &TripManager) -> Option<DrawCarInput> {
         let p = self.parked_cars.get(&id)?;
         match p.spot {
             ParkingSpot::Onstreet(lane, idx) => {
                 let front_dist = self.onstreet_lanes[&lane].dist_along_for_car(idx, &p.vehicle);
+                // TODO Is this expensive to do constantly?
+                let status = if let Some(b) = p.vehicle.owner {
+                    if trips.find_trip_using_car(id, b).is_some() {
+                        CarStatus::ParkedWithTrip
+                    } else {
+                        CarStatus::ParkedWithoutTrip
+                    }
+                } else {
+                    CarStatus::ParkedWithoutTrip
+                };
                 Some(DrawCarInput {
                     id: p.vehicle.id,
                     waiting_for_turn: None,
-                    status: CarStatus::Parked,
+                    status,
                     on: Traversable::Lane(lane),
                     label: None,
                     metadata: AgentMetadata {
@@ -182,18 +194,20 @@ impl ParkingSimState {
     }
 
     // There's no DrawCarInput for cars parked offstreet, so we need this.
-    pub fn canonical_pt(&self, id: CarID, map: &Map) -> Option<Pt2D> {
+    pub fn canonical_pt(&self, id: CarID, map: &Map, trips: &TripManager) -> Option<Pt2D> {
         let p = self.parked_cars.get(&id)?;
         match p.spot {
-            ParkingSpot::Onstreet(_, _) => self.get_draw_car(id, map).map(|c| c.body.last_pt()),
+            ParkingSpot::Onstreet(_, _) => {
+                self.get_draw_car(id, map, trips).map(|c| c.body.last_pt())
+            }
             ParkingSpot::Offstreet(b, _) => Some(map.get_b(b).label_center),
         }
     }
 
-    pub fn get_all_draw_cars(&self, map: &Map) -> Vec<DrawCarInput> {
+    pub fn get_all_draw_cars(&self, map: &Map, trips: &TripManager) -> Vec<DrawCarInput> {
         self.parked_cars
             .keys()
-            .filter_map(|id| self.get_draw_car(*id, map))
+            .filter_map(|id| self.get_draw_car(*id, map, trips))
             .collect()
     }
 

sim/src/render.rs

@@ -46,7 +46,8 @@ pub struct DrawCarInput {
 pub enum CarStatus {
     Moving,
     Stuck,
-    Parked,
+    ParkedWithoutTrip,
+    ParkedWithTrip,
     Debug,
 }
 

sim/src/sim.rs

@@ -296,7 +296,7 @@ impl GetDrawAgents for Sim {
     fn get_draw_cars(&self, on: Traversable, map: &Map) -> Vec<DrawCarInput> {
         if let Traversable::Lane(l) = on {
             if map.get_l(l).is_parking() {
-                return self.parking.get_draw_cars(l, map);
+                return self.parking.get_draw_cars(l, map, &self.trips);
             }
         }
         self.driving
@@ -315,7 +315,7 @@ impl GetDrawAgents for Sim {
         let mut result = self
             .driving
             .get_all_draw_cars(self.time, map, &self.transit);
-        result.extend(self.parking.get_all_draw_cars(map));
+        result.extend(self.parking.get_all_draw_cars(map, &self.trips));
         result
     }
 
@@ -884,7 +884,7 @@ impl Sim {
         match id {
             AgentID::Car(id) => self
                 .parking
-                .canonical_pt(id, map)
+                .canonical_pt(id, map, &self.trips)
                 .or_else(|| Some(self.get_draw_car(id, map)?.body.last_pt())),
             AgentID::Pedestrian(id) => Some(self.get_draw_ped(id, map)?.pos),
         }