Small changes to the cluster services: cluster information is published in

the scene object; clusters are centered within their group of occupants; a
player must start a cluster with another player rather than by themselves.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2278 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/whirled/spot/data/Cluster.java

@@ -0,0 +1,38 @@
+//
+// $Id: Cluster.java,v 1.1 2003/02/13 21:55:22 mdb Exp $
+
+package com.threerings.whirled.spot.data;
+
+import com.threerings.presents.dobj.DSet;
+
+/**
+ * Contains information on clusters.
+ */
+public class Cluster
+    implements DSet.Entry
+{
+    /** A unique identifier for this cluster (also the distributed object
+     * id of the cluster chat object). */
+    public int clusterOid;
+
+    /** The x-coordinate of the cluster in the scene. */
+    public int x;
+
+    /** The y-coordinate of the cluster in the scene. */
+    public int y;
+
+    /** The number of occupants in this cluster. */
+    public int occupants;
+
+    // documentation inherited
+    public Comparable getKey ()
+    {
+        if (_key == null) {
+            _key = new Integer(clusterOid);
+        }
+        return _key;
+    }
+
+    /** Used for {@link #geyKey}. */
+    protected transient Integer _key;
+}