Omit trip timeline buttons to jump to the beginning/end of a trip in freeform mode. When you reset there, the sim is empty; there's no scenario. So it'll just crash, because the person doesn't exist.

game/src/info/mod.rs

@@ -288,6 +288,8 @@ pub struct Details {
     pub hyperlinks: HashMap<String, Tab>,
     pub warpers: HashMap<String, ID>,
     pub time_warpers: HashMap<String, (TripID, Time)>,
+    // It's just convenient to plumb this here
+    pub can_jump_to_time: bool,
 }
 
 impl InfoPanel {
@@ -306,6 +308,7 @@ impl InfoPanel {
             hyperlinks: HashMap::new(),
             warpers: HashMap::new(),
             time_warpers: HashMap::new(),
+            can_jump_to_time: ctx_actions.gameplay_mode().can_jump_to_time(),
         };
 
         let (mut col, main_tab) = match tab {

game/src/info/trip.rs

@@ -168,9 +168,11 @@ pub fn future(
         details
             .warpers
             .insert(format!("jump to goal of {}", id), id2);
+        if details.can_jump_to_time {
             details
                 .time_warpers
                 .insert(format!("wait for {}", id), (id, trip.departure));
+        }
 
         col.push(
             Widget::row(vec![
@@ -180,12 +182,16 @@ pub fn future(
                 )
                 .tooltip(Text::from(Line(name1)))
                 .build(ctx, format!("jump to start of {}", id), None),
+                if details.can_jump_to_time {
                     Btn::text_bg2("Wait for trip")
                         .tooltip(Text::from(Line(format!(
                             "This will advance the simulation to {}",
                             trip.departure.ampm_tostring()
                         ))))
-                    .build(ctx, format!("wait for {}", id), None),
+                        .build(ctx, format!("wait for {}", id), None)
+                } else {
+                    Widget::nothing()
+                },
                 Btn::svg(
                     "system/assets/timeline/goal_pos.svg",
                     RewriteColor::Change(Color::WHITE, app.cs.hovering),
@@ -601,7 +607,7 @@ fn make_timeline(
             },
         ]),
         Widget::row(vec![
-            {
+            if details.can_jump_to_time {
                 details.time_warpers.insert(
                     format!("jump to {}", trip.departure),
                     (trip_id, trip.departure),
@@ -618,8 +624,11 @@ fn make_timeline(
                     txt
                 })
                 .build(ctx, format!("jump to {}", trip.departure), None)
+            } else {
+                Widget::nothing()
             },
             if let Some(t) = end_time {
+                if details.can_jump_to_time {
                     details
                         .time_warpers
                         .insert(format!("jump to {}", t), (trip_id, t));
@@ -638,6 +647,9 @@ fn make_timeline(
                     .align_right()
                 } else {
                     Widget::nothing()
+                }
+            } else {
+                Widget::nothing()
             },
         ]),
     ];

game/src/sandbox/gameplay/mod.rs

@@ -154,6 +154,13 @@ impl GameplayMode {
         }
     }
 
+    pub fn can_jump_to_time(&self) -> bool {
+        match self {
+            GameplayMode::Freeform(_) => false,
+            _ => true,
+        }
+    }
+
     pub fn allows(&self, edits: &MapEdits) -> bool {
         for cmd in &edits.commands {
             match cmd {