fix area under curve on jump-to-time when active agents isnt 0 at end of day. also... fail loudly when we make it to the end of the day and too many active agents are left. at some point lakeslice broke and I didnt notice. :( ... but actually it's just a crowd of people waiting on a bus that isnt managing to spawn.

game/src/challenges.rs

@@ -3,7 +3,7 @@ use crate::game::{State, Transition};
 use crate::managed::{Callback, ManagedGUIState, WrappedComposite};
 use crate::sandbox::gameplay::Tutorial;
 use crate::sandbox::{GameplayMode, SandboxMode, TutorialState};
-use abstutil::Timer;
+use abstutil::{prettyprint_usize, Timer};
 use ezgui::{hotkey, Btn, Color, Composite, EventCtx, Key, Line, Text, TextExt, Widget};
 use geom::{Duration, Time};
 use map_model::Map;
@@ -381,8 +381,19 @@ fn prebake(map: &Map, scenario: Scenario, time_limit: Option<Duration>, timer: &
         abstutil::path_prebaked_results(&scenario.map_name, &scenario.scenario_name),
         sim.get_analytics(),
     );
+    let agents_left = sim.num_agents().sum();
+    timer.note(format!("{} agents left by end of day", agents_left));
     timer.stop(format!(
         "prebake for {} / {}",
         scenario.map_name, scenario.scenario_name
     ));
+
+    // TODO Ah, it's people waiting on a bus that never spawned. Woops.
+    if agents_left > 500 && false {
+        panic!(
+            "{} agents left by end of day on {}; seems bad",
+            prettyprint_usize(agents_left),
+            scenario.map_name
+        );
+    }
 }

game/src/sandbox/mod.rs

@@ -306,24 +306,24 @@ impl AgentMeter {
             Widget::custom_row(vec![
                 Widget::custom_row(vec![
                     Widget::draw_svg(ctx, "system/assets/meters/pedestrian.svg").margin_right(5),
-                    prettyprint_usize(by_type[&AgentType::Pedestrian]).draw_text(ctx),
+                    prettyprint_usize(by_type.get(AgentType::Pedestrian)).draw_text(ctx),
                 ]),
                 Widget::custom_row(vec![
                     Widget::draw_svg(ctx, "system/assets/meters/bike.svg").margin_right(5),
-                    prettyprint_usize(by_type[&AgentType::Bike]).draw_text(ctx),
+                    prettyprint_usize(by_type.get(AgentType::Bike)).draw_text(ctx),
                 ]),
                 Widget::custom_row(vec![
                     Widget::draw_svg(ctx, "system/assets/meters/car.svg").margin_right(5),
-                    prettyprint_usize(by_type[&AgentType::Car]).draw_text(ctx),
+                    prettyprint_usize(by_type.get(AgentType::Car)).draw_text(ctx),
                 ]),
                 Widget::custom_row(vec![
                     Widget::draw_svg(ctx, "system/assets/meters/bus.svg").margin_right(5),
-                    prettyprint_usize(by_type[&AgentType::Bus] + by_type[&AgentType::Train])
+                    prettyprint_usize(by_type.get(AgentType::Bus) + by_type.get(AgentType::Train))
                         .draw_text(ctx),
                 ]),
                 Widget::custom_row(vec![
                     Widget::draw_svg(ctx, "system/assets/meters/passenger.svg").margin_right(5),
-                    prettyprint_usize(by_type[&AgentType::TransitRider]).draw_text(ctx),
+                    prettyprint_usize(by_type.get(AgentType::TransitRider)).draw_text(ctx),
                 ]),
             ])
             .centered(),

game/src/sandbox/speed.rs

@@ -744,6 +744,7 @@ fn area_under_curve(raw: Vec<(Time, usize)>, width: f64, height: f64) -> Polygon
     for pt in lttb::lttb(pts, 100) {
         downsampled.push(Pt2D::new(pt.x, pt.y));
     }
+    downsampled.push(Pt2D::new(width, height));
     downsampled.push(downsampled[0]);
     Polygon::new(&downsampled)
 }

sim/src/sim.rs

@@ -8,7 +8,7 @@ use crate::{
     UnzoomedAgent, Vehicle, VehicleSpec, VehicleType, WalkingSimState, BUS_LENGTH,
     LIGHT_RAIL_LENGTH, MIN_CAR_LENGTH,
 };
-use abstutil::{Parallelism, Timer};
+use abstutil::{Counter, Parallelism, Timer};
 use derivative::Derivative;
 use geom::{Distance, Duration, PolyLine, Pt2D, Speed, Time};
 use instant::Instant;
@@ -871,7 +871,7 @@ impl Sim {
     pub fn num_trips(&self) -> (usize, usize) {
         self.trips.num_trips()
     }
-    pub fn num_agents(&self) -> BTreeMap<AgentType, usize> {
+    pub fn num_agents(&self) -> Counter<AgentType> {
         self.trips.num_agents(&self.transit)
     }
     // (total number of people, just in buildings, just off map)

sim/src/trips.rs

@@ -829,7 +829,7 @@ impl TripManager {
             self.unfinished_trips,
         )
     }
-    pub fn num_agents(&self, transit: &TransitSimState) -> BTreeMap<AgentType, usize> {
+    pub fn num_agents(&self, transit: &TransitSimState) -> Counter<AgentType> {
         let mut cnt = Counter::new();
         for a in self.active_trip_mode.keys() {
             cnt.inc(a.to_type());
@@ -837,10 +837,7 @@ impl TripManager {
         let (buses, trains) = transit.active_vehicles();
         cnt.add(AgentType::Bus, buses);
         cnt.add(AgentType::Train, trains);
-        AgentType::all()
+        cnt
-            .into_iter()
-            .map(|k| (k, cnt.get(k)))
-            .collect()
     }
     pub fn num_ppl(&self) -> (usize, usize, usize) {
         let mut ppl_in_bldg = 0;