2022 Day 15, part 1 complete

Going home from C&C

helpers/coordinate.go

@@ -118,7 +118,7 @@ func (c Coordinate) String() string {
 }
 
 func (c Coordinate) Distance(t Coordinate) int {
-	return AbsInt(c.X-t.X) + AbsInt(c.Y-t.Y)
+	return ManhattanDistance(c.X, c.Y, t.X, t.Y)
 }
 
 func (c Coordinate) Equals(c2 Coordinate) bool {

helpers/helpers.go

@@ -416,3 +416,7 @@ func Sum(l, h int) int {
 	}
 	return ret
 }
+
+func ManhattanDistance(x1, y1, x2, y2 int) int {
+	return AbsInt(x1-x2) + AbsInt(y1-y2)
+}