From 4b61a2ed243c270f6e10c1f79fd42a7c95bfa736 Mon Sep 17 00:00:00 2001
From: Baipyrus <simon.waltemathe@gmail.com>
Date: Sat, 27 Jan 2024 23:53:01 +0100
Subject: [PATCH] prepare scanning neighbors

---
 Day17/Part1.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Day17/Part1.js b/Day17/Part1.js
index 7ad3c8d..5ebc725 100644
--- a/Day17/Part1.js
+++ b/Day17/Part1.js
@@ -33,6 +33,18 @@ while (open.length > 0) {
     const current = open.splice(record.index, 1)[0];
     closed.push(current);
     if (current === end) break;
+
+    for (let j = -1; j < 2; j++)
+        for (let i = -1; i < 2; i++) {
+            if (!(i === 0 ^ j === 0)) continue;
+
+            const nx = current.x + i;
+            const ny = current.y + j;
+
+            if (!input[ny]) continue;
+            const next = input[ny][nx];
+            if (!next || closed.includes(next)) continue;
+        }
 }
 console.log(end.g);