Day 17 solution

My initial idea for a solution ended up working out great, but I had a hard time getting it all down on "paper," so to speak, so this is probably 200 lines of code too many, but it definitely does exactly what I envisioned (and quickly) even if it's not the most succinct.

utilities/vector.go

@@ -13,6 +13,8 @@ type Vec3[T Number] struct {
 	Z T
 }
 
+type Vec2i Vec2[int]
+
 func (v Vec2[T]) Dot(other Vec2[T]) T {
 	return (v.X * other.X) + (v.Y * other.Y)
 }