Implement Direction enum

1 files changed, 51 insertions, 0 deletions

diff --git a/src/ch/epfl/xblast/Direction.java b/src/ch/epfl/xblast/Direction.java
new file mode 100644
index 0000000..ea0960d
--- /dev/null
+++ b/src/ch/epfl/xblast/Direction.java
@@ -0,0 +1,51 @@
+package ch.epfl.xblast;
+
+/**
+ * A Direction.
+ *
+ * @author Pacien TRAN-GIRARD (261948)
+ */
+public enum Direction {
+
+    N, E, S, W;
+
+    /**
+     * Returns the opposite Direction.
+     *
+     * @return the opposite Direction
+     */
+    public Direction opposite() {
+        switch (this) {
+            case N:
+                return S;
+            case S:
+                return N;
+            case E:
+                return W;
+            case W:
+                return E;
+            default:
+                return null;
+        }
+    }
+
+    /**
+     * T(the Direction is horizontal to the screen (East or West)).
+     *
+     * @return T(the Direction is horizontal to the screen)
+     */
+    public boolean isHorizontal() {
+        return this == E || this == W;
+    }
+
+    /**
+     * T(the current and given Directions are parallel (identical or opposite)).
+     *
+     * @param that a Direction to compare
+     * @return T(the current and given Directions are parallel)
+     */
+    public boolean isParallelTo(Direction that) {
+        return that == this || that == this.opposite();
+    }
+
+}