Written the ImageWriter

maze/maze.go

@@ -1,8 +1,31 @@
 package maze
 
+import "math"
+
 type Coordinates struct {
 	X, Y int
 }
+
+func (c Coordinates) Distance(o Coordinates) float64 {
+	x, y := float64(o.X-c.X), float64(o.Y-c.Y)
+
+	if y == 0 {
+		if x < 0 {
+			return -x
+		}
+		return x
+	}
+
+	if x == 0 {
+		if y < 0 {
+			return -y
+		}
+		return y
+	}
+
+	return math.Sqrt(x*x + y*y)
+}
+
 type Node struct {
 	Coords      Coordinates
 	Up, Down    *Node