From ea72d125660666de3d85703d936893a4b5fa0f16 Mon Sep 17 00:00:00 2001
From: Parnic <github@parnic.com>
Date: Thu, 15 Dec 2022 14:47:00 -0600
Subject: [PATCH] Quick perf improvement

Day 15 part 2 is now ~300ms on my PC with my dataset in Release (~1s in Debug, which is...striking).
---
 src/Util/Vec2.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Util/Vec2.cs b/src/Util/Vec2.cs
index 6ed9296..b2a48f8 100644
--- a/src/Util/Vec2.cs
+++ b/src/Util/Vec2.cs
@@ -37,7 +37,7 @@ public struct ivec2 : IEquatable<ivec2>, IComparable<ivec2>, IComparable
     public float Length => MathF.Sqrt(LengthSquared);
 
     public int ManhattanDistance => Abs(this).Sum;
-    public int ManhattanDistanceTo(ivec2 other) => (this - other).ManhattanDistance;
+    public int ManhattanDistanceTo(ivec2 other) => System.Math.Abs(x - other.x) + System.Math.Abs(y - other.y);
 
     public ivec2 GetBestDirectionTo(ivec2 p)
     {