Day 20 part 2 - print some extra info that allowed figuring it out manually

1 files changed, 16 insertions, 4 deletions

diff --git a/2023/src/bin/day_20.rs b/2023/src/bin/day_20.rs
index 070093a..f2e955f 100644
--- a/2023/src/bin/day_20.rs
+++ b/2023/src/bin/day_20.rs
@@ -32,14 +32,19 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
                 .find(|m| m.id == ModuleId::rx())
                 .unwrap()
                 .index,
+            circuit
+                .modules
+                .iter()
+                .find(|m| m.id == ModuleId::from_short_alphanumeric("th").unwrap())
+                .unwrap()
+                .index,
         );
 
-        let mut i = 0;
         while !pulse_tracker.rx_got_a_low_pulse {
+            pulse_tracker.i += 1;
             circuit.push_the_button(&mut pulse_tracker);
-            i += 1;
         }
-        dbg!(i, pulse_tracker);
+        dbg!(pulse_tracker.i, pulse_tracker);
     }
 
     Ok(())
@@ -87,14 +92,18 @@ struct RxWatcher {
     pulses: VecDeque<Pulse>,
     rx_module_index: usize,
     rx_got_a_low_pulse: bool,
+    logging_module_index: usize,
+    i: usize,
 }
 
 impl RxWatcher {
-    fn new(rx_module_index: usize) -> Self {
+    fn new(rx_module_index: usize, logging_module_index: usize) -> Self {
         RxWatcher {
             pulses: VecDeque::default(),
             rx_module_index,
             rx_got_a_low_pulse: false,
+            logging_module_index,
+            i: 0,
         }
     }
 }
@@ -266,6 +275,9 @@ impl PulseTracker for RxWatcher {
     fn button_pulse(&mut self) {}
 
     fn push(&mut self, pulse: Pulse) {
+        if pulse.state && pulse.output == self.logging_module_index {
+            println!("{}: {} into {}", self.i, pulse.input, pulse.output);
+        }
         if !pulse.state && pulse.output == self.rx_module_index {
             self.rx_got_a_low_pulse = true;
         }