day 14 puzzle 2

src/day14/puzzle1.typ

@@ -6,11 +6,8 @@
   return calc.rem-euclid(v0 + dv * steps, max)
 }
 
-#let solve(w: 0, h: 0, steps: 100, input) = {
-  assert(w != 0, message: "Width must be != 0")
-  assert(h != 0, message: "Height must be != 0")
-
-  let bots = input.split("\n").map(b => {
+#let parse-input(input) = {
+  return input.split("\n").map(b => {
     let m = b.match(regexp)
     return (
       pos: (
@@ -23,6 +20,13 @@
       )
     )
   })
+}
+
+#let solve(w: 0, h: 0, steps: 100, input) = {
+  assert(w != 0, message: "Width must be != 0")
+  assert(h != 0, message: "Height must be != 0")
+
+  let bots = parse-input(input)
 
   let quadrants = (
     tl: 0,

src/day14/puzzle2.typ

@@ -0,0 +1,33 @@
+#import "/src/utils.typ": *
+#import "@preview/cetz:0.3.1": canvas, draw
+#import "puzzle1.typ": parse-input, simulate
+
+#let input = get-input(14)
+#let bots = parse-input(input)
+#let res = 8270
+#let (width, height) = (101, 103)
+#let sim-x = simulate.with(max: width, steps: res)
+#let sim-y = simulate.with(max: height, steps: res)
+#let size = 0.1
+
+#figure(
+  canvas({
+    draw.rect(
+      (0, 0),
+      (width * size, -height * size)
+    )
+    for bot in bots {
+      let x = sim-x(bot.pos.x, bot.vel.x)
+      let y = sim-y(bot.pos.y, bot.vel.y)
+      draw.rect(
+        (x * size, -y * size),
+        ((x + 1) * size, -(y + 1) * size),
+        stroke: none,
+        fill: black
+      )
+    }
+  }),
+  caption: "Christmas tree easter egg"
+)
+
+#show-result(res)