Move direction enum to own file.

2024/src/main/kotlin/Direction.kt

@@ -0,0 +1,21 @@
+enum class Direction {
+    North,
+    East,
+    South,
+    West;
+
+    fun turnClockwise() = when(this) {
+        North -> East
+        East -> South
+        South -> West
+        West -> North
+    }
+}
+
+fun Grid.Coordinate.step(direction: Direction) =
+    when (direction) {
+        Direction.North -> copy(y = y - 1)
+        Direction.East -> copy(x = x + 1)
+        Direction.South -> copy(y = y + 1)
+        Direction.West -> copy(x = x - 1)
+    }

2024/src/main/kotlin/day6.kt

@@ -1,25 +1,3 @@
-enum class Direction {
-    North,
-    East,
-    South,
-    West;
-
-    fun turnClockwise() = when(this) {
-        North -> East
-        East -> South
-        South -> West
-        West -> North
-    }
-}
-
-fun Grid.Coordinate.step(direction: Direction) =
-    when (direction) {
-        Direction.North -> copy(y = y - 1)
-        Direction.East -> copy(x = x + 1)
-        Direction.South -> copy(y = y + 1)
-        Direction.West -> copy(x = x - 1)
-    }
-
 fun main() {
     val grid = CharGrid.read("day6.txt")