Day 10 initial

src/day10/mod.rs

@@ -1,15 +1,74 @@
 use crate::read;
-use std::collections::HashSet;
 use itertools::Itertools;
+use std::collections::HashSet;
+use std::str::FromStr;
+
+#[derive(Debug, PartialEq, Eq, Clone, Hash)]
+enum Command {
+    AddX(i32),
+    Noop,
+}
+impl Command {
+    fn from_str(s: &str) -> Self {
+        if s == "noop" {
+            Self::Noop
+        } else {
+            let sp = s.split_once(' ').unwrap();
+            Self::AddX(sp.1.parse().unwrap())
+        }
+    }
+}
 
-//#[derive(Debug, PartialEq, Eq, Default, Clone, Hash)]
 pub fn run() {
     let input = read("10");
-    let lines = input.lines();
+    let mut lines = input.lines();
+
+    let mut cycle = 1;
+    let mut is_busy = 0;
+    let mut v: i32 = 1;
+    let mut v_new: i32 = 1;
+    let mut sig_str = vec![];
+    let mut pixels = [false; 40];
+    'outer: loop {
+        if cycle == 20 || (cycle - 20) % 40 == 0 {
+            sig_str.push(cycle * v);
+        }
+        if is_busy == 0 {
+            match lines.next() {
+                Some(s) => {
+                    let cmd = Command::from_str(s);
+                    match cmd {
+                        Command::Noop => {}
+                        Command::AddX(x) => {
+                            v_new += x;
+                            is_busy = 1;
+                        }
+                    }
+                }
+                _ => {
+                    break 'outer;
+                }
+            };
+        } else {
+            is_busy -= 1;
+        }
+        if is_busy == 0 {
+            v = v_new;
+        }
+
+        let pixel = cycle % 40;
+        let is_lit = pixel - 1 == v || pixel == v || pixel + 1 == v;
+        pixels[pixel as usize] = is_lit;
+        if pixel == 0 && cycle != 0 {
+            let row: String = pixels.map(|l| if l { '#' } else { '.' }).iter().collect();
+            println!("{}", row);
+        }
+        cycle += 1;
+    }
 
     #[cfg(feature = "part1")]
     {
-        println!("Day 10, Part 01: {}", "TODO");
+        println!("Day 10, Part 01: {}", sig_str.iter().sum::<i32>());
     }
 
     #[cfg(feature = "part2")]