From d0703fcedf05a95e850b3e9f30fa2ec15349a723 Mon Sep 17 00:00:00 2001
From: Elijah Voigt <elijah.caine.mv@gmail.com>
Date: Tue, 14 Jul 2026 15:25:47 -0700
Subject: [PATCH] Disable last selected note to avoid crash when no notes
 selected

---
 life/src/main.rs | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/life/src/main.rs b/life/src/main.rs
index 9c65054..5976035 100644
--- a/life/src/main.rs
+++ b/life/src/main.rs
@@ -86,6 +86,7 @@ fn main() {
                 update_material,
                 update_debug_info_cell_count,
                 update_debug_info_coordinates,
+                update_note_interactivity,
             ),
         )
         .add_systems(Update, cell_lifecycle.run_if(on_message::<Lifecycle>))
@@ -311,7 +312,7 @@ fn primary_ui() -> impl Scene {
             // TODO: if last selected note and de-selected, undo that move please
             let this_note = notes.get(change.source).unwrap();
             pitch_map.set_note(this_note, change.value);
-            info!("(note {:?}) Updated pitch map: {:#?}", this_note, pitch_map);
+            debug!("(note {:?}) Updated pitch map: {:#?}", this_note, pitch_map);
         }
     }
 
@@ -497,7 +498,7 @@ fn primary_ui() -> impl Scene {
                                 on(|value_change: On<ValueChange<f32>>, mut pitch_map: ResMut<PitchMap>| {
                                     if value_change.is_final {
                                         pitch_map.octaves_up = value_change.value as usize;
-                                        info!("(octave up) Updated pitch map: {:#?}", pitch_map);
+                                        debug!("(octave up) Updated pitch map: {:#?}", pitch_map);
                                     }
                                 })
                                 on(slider_self_update),
@@ -507,7 +508,7 @@ fn primary_ui() -> impl Scene {
                                 on(|value_change: On<ValueChange<f32>>, mut pitch_map: ResMut<PitchMap>| {
                                     if value_change.is_final {
                                         pitch_map.octaves_down = value_change.value as usize;
-                                        info!("(octave down) Updated pitch map: {:#?}", pitch_map);
+                                        debug!("(octave down) Updated pitch map: {:#?}", pitch_map);
                                     }
                                 })
                                 on(slider_self_update),
@@ -1163,10 +1164,10 @@ impl PitchMap {
 
 /// When the pitch map changes, update all cells to use the correct pitch (note + octave)
 fn reassign_cell_pitch(mut query: Query<(&mut CellPitch, &Coordinates)>, pitch_map: Res<PitchMap>) {
-    info!("query size: {:?}", query.iter().len());
+    debug!("query size: {:?}", query.iter().len());
     query.iter_mut().for_each(|(mut cell_pitch, c)| {
         *cell_pitch = pitch_map.coordinates_cell_pitch(c);
-        info!("Updating cell pitch for {:?}", c);
+        debug!("Updating cell pitch for {:?}", c);
     });
 }
 
@@ -1212,3 +1213,18 @@ fn update_debug_info_coordinates(
             *t = Text::new(format!("{},{}", coordinates.0.x, coordinates.0.y));
         });
 }
+
+fn update_note_interactivity(
+    checked: Query<Entity, (With<Note>, With<Checkbox>, With<Checked>)>,
+    mut commands: Commands,
+) {
+    if checked.iter().len() == 1 {
+        checked.iter().for_each(|e| {
+            commands.entity(e).insert(InteractionDisabled);
+        });
+    } else {
+        checked.iter().for_each(|e| {
+            commands.entity(e).remove::<InteractionDisabled>();
+        });
+    }
+}