note in trip panel when a path isnt possible anymore

docs/dev.md

@@ -91,6 +91,8 @@ You can rerun specific stages of the importer:
 - By default, Seattle is assumed as the city. You have to specify otherwise:
   `./import.sh --city=los_angeles --map downtown_la`.
 
+You can also make the importer [import a new city](new_city.md).
+
 ## Understanding stuff
 
 The docs listed at

game/src/info/trip.rs

@@ -368,6 +368,7 @@ fn make_timeline(
     let mut timeline = Vec::new();
     let num_phases = phases.len();
     let mut elevation = Vec::new();
+    let mut path_impossible = false;
     for (idx, p) in phases.into_iter().enumerate() {
         let color = match p.phase_type {
             TripPhaseType::Driving => app.cs.unzoomed_car,
@@ -495,6 +496,8 @@ fn make_timeline(
                     ),
                 );
             }
+        } else if p.has_path_req {
+            path_impossible = true;
         }
     }
 
@@ -552,6 +555,9 @@ fn make_timeline(
         ])
         .margin_above(5),
     ];
+    if path_impossible {
+        col.push("Map edits have disconnected the path taken before".draw_text(ctx));
+    }
     // TODO This just needs too much more work
     if false {
         col.extend(elevation);

sim/src/analytics.rs

@@ -441,6 +441,7 @@ impl Analytics {
                     map.pathfind(req.clone())
                         .map(|path| (req.start.dist_along(), path))
                 }),
+                has_path_req: maybe_req.is_some(),
                 phase_type: *phase_type,
             })
         }
@@ -449,7 +450,7 @@ impl Analytics {
 
     pub fn get_all_trip_phases(&self) -> BTreeMap<TripID, Vec<TripPhase>> {
         let mut trips = BTreeMap::new();
-        for (t, id, _, phase_type) in &self.trip_log {
+        for (t, id, maybe_req, phase_type) in &self.trip_log {
             let phases: &mut Vec<TripPhase> = trips.entry(*id).or_insert_with(Vec::new);
             if let Some(ref mut last) = phases.last_mut() {
                 last.end_time = Some(*t);
@@ -467,6 +468,7 @@ impl Analytics {
                 end_time: None,
                 // Don't compute any paths
                 path: None,
+                has_path_req: maybe_req.is_some(),
                 phase_type: *phase_type,
             })
         }
@@ -611,6 +613,7 @@ pub struct TripPhase {
     pub end_time: Option<Time>,
     // Plumb along start distance
     pub path: Option<(Distance, Path)>,
+    pub has_path_req: bool,
     pub phase_type: TripPhaseType,
 }