D10: Added opposite to Direction enum.

sraaphorst · sraaphorst · commit b88b1b35ae9e · 2024-12-10T18:35:17.000-05:00
diff --git a/src/main/kotlin/common/intpos2d/intpos2d.kt b/src/main/kotlin/common/intpos2d/intpos2d.kt
@@ -36,4 +36,11 @@ enum class Direction(val delta: IntPos2D) {
         SOUTH -> EAST
         EAST -> NORTH
     }
+
+    fun opposite(): Direction = when (this) {
+        NORTH -> SOUTH
+        EAST -> WEST
+        SOUTH -> NORTH
+        WEST -> EAST
+    }
 }

Original file line number	Diff line number	Diff line change
`@@ -36,4 +36,11 @@ enum class Direction(val delta: IntPos2D) {`
`36`	`36`	`SOUTH -> EAST`
`37`	`37`	`EAST -> NORTH`
`38`	`38`	`}`
	`39`	`+`
	`40`	`+ fun opposite(): Direction = when (this) {`
	`41`	`+ NORTH -> SOUTH`
	`42`	`+ EAST -> WEST`
	`43`	`+ SOUTH -> NORTH`
	`44`	`+ WEST -> EAST`
	`45`	`+ }`
`39`	`46`	`}`