diff --git a/src/java/com/threerings/crowd/server/OccupantOp.java b/src/java/com/threerings/crowd/server/OccupantOp.java
new file mode 100644
index 000000000..b6ee5b076
--- /dev/null
+++ b/src/java/com/threerings/crowd/server/OccupantOp.java
@@ -0,0 +1,18 @@
+//
+// $Id: OccupantOp.java,v 1.1 2002/10/31 01:12:08 shaper Exp $
+
+package com.threerings.crowd.server;
+
+import com.threerings.crowd.data.OccupantInfo;
+
+/**
+ * An operation to be applied to all occupants in a location that may
+ * contain occupants, e.g., a {@link PlaceManager}.
+ */
+public interface OccupantOp
+{
+    /**
+     * Called with the occupant info for each occupant in the location.
+     */
+    public void apply (OccupantInfo info);
+}
diff --git a/src/java/com/threerings/crowd/server/PlaceManager.java b/src/java/com/threerings/crowd/server/PlaceManager.java
index df46260f5..5a584399c 100644
--- a/src/java/com/threerings/crowd/server/PlaceManager.java
+++ b/src/java/com/threerings/crowd/server/PlaceManager.java
@@ -1,10 +1,11 @@
 //
-// $Id: PlaceManager.java,v 1.39 2002/10/26 02:40:30 shaper Exp $
+// $Id: PlaceManager.java,v 1.40 2002/10/31 01:12:08 shaper Exp $
 
 package com.threerings.crowd.server;
 
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.Iterator;
 import java.util.Properties;
 
 import com.samskivert.util.HashIntMap;
@@ -102,6 +103,20 @@ public class PlaceManager
         return (OccupantInfo)_occInfo.get(bodyOid);
     }
 
+    /**
+     * Applies the supplied occupant operation to each occupant currently
+     * present in this place.
+     */
+    public void applyToOccupants (OccupantOp op)
+    {
+        if (_plobj != null) {
+            Iterator iter = _plobj.occupantInfo.entries();
+            while (iter.hasNext()) {
+                op.apply((OccupantInfo)iter.next());
+            }
+        }
+    }
+
     /**
      * Updates the occupant info for this room occupant. <em>Note:</em>
      * This must be used rather than setting the occupant info directly to