Allow a particular random object to be specified when shuffling the deck.

git-svn-id: svn+ssh://src.earth.threerings.net/vilya/trunk@760 c613c5cb-e716-0410-b11b-feb51c14d237

src/java/com/threerings/parlor/card/data/Deck.java

@@ -23,6 +23,7 @@ package com.threerings.parlor.card.data;
 
 import java.util.Collections;
 import java.util.List;
+import java.util.Random;
 
 import com.threerings.util.StreamableArrayList;
 
@@ -83,6 +84,14 @@ public class Deck extends StreamableArrayList<Card>
         Collections.shuffle(this);
     }
 
+    /**
+     * Shuffles the deck.
+     */
+    public void shuffle (Random r)
+    {
+        Collections.shuffle(this, r);
+    }
+
     /**
      * Deals a hand of cards from the deck.
      *