2018 Day 22 Complete

2018/day22/coord.go

@@ -0,0 +1,19 @@
+package main
+
+type coord struct {
+	x, y int
+}
+
+func (c coord) neighbors() []coord {
+	n := []coord{
+		{c.x + 1, c.y},
+		{c.x, c.y + 1},
+	}
+	if c.x > 0 {
+		n = append(n, coord{c.x - 1, c.y})
+	}
+	if c.y > 0 {
+		n = append(n, coord{c.x, c.y - 1})
+	}
+	return n
+}