1 files changed, 19 insertions, 0 deletions

diff --git a/src/ch/epfl/xblast/Direction.java b/src/ch/epfl/xblast/Direction.java
index 030038b..e2df042 100644
--- a/src/ch/epfl/xblast/Direction.java
+++ b/src/ch/epfl/xblast/Direction.java
@@ -68,6 +68,25 @@ public enum Direction {
     }
 
     /**
+     * T(the current and given Directions are perpendicular).
+     *
+     * @param that a Direction to compare
+     * @return T(the current and given Directions are perpendicular)
+     */
+    public boolean isPerpendicularTo(Direction that) {
+        switch (this) {
+            case N:
+            case S:
+                return that == E || that == W;
+            case E:
+            case W:
+                return that == N || that == S;
+            default:
+                return false;
+        }
+    }
+
+    /**
      * Returns the x-coordinate of the normed vector representation of the Direction.
      *
      * @return the x-coordinate