Comments.

src/slide/s4_automata.rs

@@ -47,25 +47,6 @@ impl Default for Automata {
         // Unique identifier for the grid.
         life.name = "life";
 
-        // Fill grid with random cells.
-        /*
-        for y in 0..life.size_cells {
-            for x in 0..life.size_cells {
-                if rand::thread_rng().gen_bool(0.5) {
-                    life.set_fill(x, y, Color32::BLACK);
-                }
-            }
-        }
-         */
-
-        // This would replace the grid with a single oscillator.
-        /*
-        life.clear_fill();
-        life.set_fill(5, 5, Color32::BLACK);
-        life.set_fill(6, 5, Color32::BLACK);
-        life.set_fill(7, 5, Color32::BLACK);
-         */
-
         Self {
             life,
             state: AutomataState::default(),
@@ -85,6 +66,8 @@ impl Slide for Automata {
                     rules: None,
                 };
 
+                // Seeded such that we get the same pattern every time, which is important since
+                // we draw arrows to preset coordinates.
                 let mut rng = ChaCha8Rng::seed_from_u64(123456789876543216);
 
                 // Randomize grid.