1 files changed, 24 insertions, 0 deletions
diff --git a/src/main/java/bjc/esodata/DoubleSided.java b/src/main/java/bjc/esodata/DoubleSided.java
new file mode 100644
index 0000000..6ecbdcf
--- /dev/null
+++ b/src/main/java/bjc/esodata/DoubleSided.java
@@ -0,0 +1,24 @@
+package bjc.esodata;
+
+/**
+ * Interface for a double-sided object.
+ * 
+ * @author bjculkin
+ *
+ */
+public interface DoubleSided {
+	/**
+	 * Flips the object.
+	 *
+	 * The active side becomes inactive, and the inactive side becomes
+	 * active.
+	 */
+	void flip();
+
+	/**
+	 * Check which side of the object is active;
+	 *
+	 * @return True if the front side is active, false otherwise.
+	 */
+	boolean currentSide();
+}