diff --git a/src/java/com/threerings/miso/client/DisplayMisoScene.java b/src/java/com/threerings/miso/client/DisplayMisoScene.java
index a3cad01a2..d2318a310 100644
--- a/src/java/com/threerings/miso/client/DisplayMisoScene.java
+++ b/src/java/com/threerings/miso/client/DisplayMisoScene.java
@@ -1,5 +1,5 @@
 //
-// $Id: DisplayMisoScene.java,v 1.2 2001/11/27 22:17:42 mdb Exp $
+// $Id: DisplayMisoScene.java,v 1.3 2002/01/30 18:28:32 mdb Exp $
 
 package com.threerings.miso.scene;
 
@@ -32,4 +32,12 @@ public interface DisplayMisoScene
      * This layer is read-only and not to be modified.
      */
     public ObjectTileLayer getObjectLayer ();
+
+    /**
+     * Returns the action associated with the object tile at the specified
+     * column and row. Null is returned if no object tile exists at that
+     * column and row or if the object tile that does exist does not have
+     * an associated action.
+     */
+    public String getObjectAction (int column, int row);
 }
diff --git a/src/java/com/threerings/miso/client/DisplayMisoSceneImpl.java b/src/java/com/threerings/miso/client/DisplayMisoSceneImpl.java
index 8752d9dfb..489a57e67 100644
--- a/src/java/com/threerings/miso/client/DisplayMisoSceneImpl.java
+++ b/src/java/com/threerings/miso/client/DisplayMisoSceneImpl.java
@@ -1,8 +1,11 @@
 //
-// $Id: DisplayMisoSceneImpl.java,v 1.48 2001/12/05 07:29:06 mdb Exp $
+// $Id: DisplayMisoSceneImpl.java,v 1.49 2002/01/30 18:28:32 mdb Exp $
 
 package com.threerings.miso.scene;
 
+import com.samskivert.util.HashIntMap;
+import com.samskivert.util.StringUtil;
+
 import com.threerings.media.tile.NoSuchTileException;
 import com.threerings.media.tile.NoSuchTileSetException;
 import com.threerings.media.tile.ObjectTile;
@@ -73,6 +76,19 @@ public class DisplayMisoSceneImpl
         _base = new BaseTileLayer(new BaseTile[swid*shei], swid, shei);
         _fringe = new TileLayer(new Tile[swid*shei], swid, shei);
         _object = new ObjectTileLayer(new ObjectTile[swid*shei], swid, shei);
+
+        // create a mapping for the action strings and populate it
+        _actions = new HashIntMap();
+        for (int i = 0; i < model.objectActions.length; i++) {
+            String action = model.objectActions[i];
+            // skip null or blank actions
+            if (StringUtil.blank(action)) {
+                continue;
+            }
+            // the key is the composite of the column and row
+            _actions.put(objectKey(model.objectTileIds[3*i],
+                                   model.objectTileIds[3*i+1]), action);
+        }
     }
 
     /**
@@ -175,6 +191,16 @@ public class DisplayMisoSceneImpl
         return _object;
     }
 
+    // documentation inherited from interface
+    public String getObjectAction (int column, int row)
+    {
+        if (_actions != null) {
+            return (String)_actions.get(objectKey(column, row));
+        } else {
+            return null;
+        }
+    }
+
     /**
      * Return a string representation of this Miso scene object.
      */
@@ -211,6 +237,15 @@ public class DisplayMisoSceneImpl
         // ", sy=" + y + ", ex=" + endx + ", ey=" + endy + "].");
     }
 
+    /**
+     * Computes the action table key for the object at the specified
+     * column and row.
+     */
+    protected static int objectKey (int column, int row)
+    {
+        return (column << 15) + row;
+    }
+
     /** The tile manager from which we load tiles. */
     protected TileManager _tmgr;
 
@@ -225,4 +260,7 @@ public class DisplayMisoSceneImpl
 
     /** The object layer of tiles. */
     protected ObjectTileLayer _object;
+
+    /** A map from object tile coordinates to action string. */
+    protected HashIntMap _actions;
 }
diff --git a/src/java/com/threerings/miso/data/MisoSceneModel.java b/src/java/com/threerings/miso/data/MisoSceneModel.java
index 61bb1fd6e..4f0249064 100644
--- a/src/java/com/threerings/miso/data/MisoSceneModel.java
+++ b/src/java/com/threerings/miso/data/MisoSceneModel.java
@@ -1,5 +1,5 @@
 //
-// $Id: MisoSceneModel.java,v 1.4 2001/12/12 02:47:17 mdb Exp $
+// $Id: MisoSceneModel.java,v 1.5 2002/01/30 18:28:32 mdb Exp $
 
 package com.threerings.miso.scene;
 
@@ -7,6 +7,9 @@ import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.IOException;
 
+import java.nio.ByteBuffer;
+import java.nio.IntBuffer;
+
 import com.samskivert.util.StringUtil;
 
 /**
@@ -35,25 +38,43 @@ public class MisoSceneModel
      * the object layer in (x, y, tile id) format. */
     public int[] objectTileIds;
 
+    /** The action strings associated with the object tiles in the order
+     * that the tiles are specified in the {@link #objectTileIds} array.
+     * Elements of this array may be null but will be converted to the
+     * empty string during serialization. */
+    public String[] objectActions;
+
     // documentation inherited
     public void writeTo (DataOutputStream out)
         throws IOException
     {
-        out.writeInt(width);
-        out.writeInt(height);
-
-        // write out the base and fringe layers
         int tcount = width*height;
-        for (int i = 0; i < tcount; i++) {
-            out.writeInt(baseTileIds[i]);
-            out.writeInt(fringeTileIds[i]);
-        }
-
-        // write out the object layer
         int otc = objectTileIds.length;
-        out.writeInt(otc);
-        for (int i = 0; i < otc; i++) {
-            out.writeInt(objectTileIds[i]);
+
+        // write everything into a ByteBuffer, viewed as an IntBuffer and
+        // then write the bytes from those operations out to the output
+        // stream
+        ByteBuffer bbuf = ByteBuffer.allocate(8*tcount + 4*otc + 4*3);
+        IntBuffer ibuf = bbuf.asIntBuffer();
+
+        // insert the dimensions
+        ibuf.put(width);
+        ibuf.put(height);
+        ibuf.put(otc);
+
+        // insert the layer data
+        ibuf.put(baseTileIds);
+        ibuf.put(fringeTileIds);
+        ibuf.put(objectTileIds);
+
+        // now write the binary data out to the output stream
+        out.write(bbuf.array());
+
+        // next write out the object action strings
+        int acount = otc/3;
+        for (int i = 0; i < acount; i++) {
+            String action = objectActions[i];
+            out.writeUTF((action == null) ? "" : action);
         }
     }
 
@@ -61,24 +82,37 @@ public class MisoSceneModel
     public void readFrom (DataInputStream in)
         throws IOException
     {
+        // we can read these directly because the byte order of the byte
+        // buffer we created to write out the data is big endian which is
+        // what the data input stream expects
         width = in.readInt();
         height = in.readInt();
+        int otc = in.readInt();
 
-        // read in the base and fringe layers
+        // read in the base layer
         int tcount = width*height;
         baseTileIds = new int[tcount];
-        fringeTileIds = new int[tcount];
         for (int i = 0; i < tcount; i++) {
             baseTileIds[i] = in.readInt();
+        }
+
+        // read in the fringe layer
+        fringeTileIds = new int[tcount];
+        for (int i = 0; i < tcount; i++) {
             fringeTileIds[i] = in.readInt();
         }
 
         // read in the object layer
-        int otc = in.readInt();
         objectTileIds = new int[otc];
         for (int i = 0; i < otc; i++) {
             objectTileIds[i] = in.readInt();
         }
+
+        // read in the object action strings
+        objectActions = new String[otc/3];
+        for (int i = 0; i < otc/3; i++) {
+            objectActions[i] = in.readUTF();
+        }
     }
 
     /**
@@ -89,7 +123,8 @@ public class MisoSceneModel
         return "[width=" + width + ", height=" + height +
             ", baseTileIds=" + StringUtil.toString(baseTileIds) +
             ", fringeTileIds=" + StringUtil.toString(fringeTileIds) +
-            ", objectTileIds=" + StringUtil.toString(objectTileIds) + "]";
+            ", objectTileIds=" + StringUtil.toString(objectTileIds) +
+            ", objectActions=" + StringUtil.toString(objectActions) + "]";
     }
 
     /**
@@ -102,6 +137,7 @@ public class MisoSceneModel
         model.baseTileIds = (int[])baseTileIds.clone();
         model.fringeTileIds = (int[])fringeTileIds.clone();
         model.objectTileIds = (int[])objectTileIds.clone();
+        model.objectActions = (String[])objectActions.clone();
         return model;
     }
 
@@ -138,5 +174,6 @@ public class MisoSceneModel
         model.baseTileIds = new int[width*height];
         model.fringeTileIds = new int[width*height];
         model.objectTileIds = new int[0];
+        model.objectActions = new String[0];
     }
 }
diff --git a/src/java/com/threerings/miso/tools/EditableMisoScene.java b/src/java/com/threerings/miso/tools/EditableMisoScene.java
index 68d25d50f..24cd4e3d6 100644
--- a/src/java/com/threerings/miso/tools/EditableMisoScene.java
+++ b/src/java/com/threerings/miso/tools/EditableMisoScene.java
@@ -1,5 +1,5 @@
 //
-// $Id: EditableMisoScene.java,v 1.9 2001/12/05 07:29:06 mdb Exp $
+// $Id: EditableMisoScene.java,v 1.10 2002/01/30 18:28:32 mdb Exp $
 
 package com.threerings.miso.tools.scene;
 
@@ -77,6 +77,14 @@ public interface EditableMisoScene
      */
     public void setObjectTile (int x, int y, ObjectTile tile, int fqTileId);
 
+    /**
+     * Sets the action string for the object tile at the specified
+     * coordinates. It may be assumed by the implementation that an object
+     * tile exists in the scene at the specified coordinates, thus callers
+     * should be sure only to call this method accordingly.
+     */
+    public void setObjectAction (int x, int y, String action);
+
     /**
      * Clears out the tile at the specified location in the base layer.
      */
@@ -92,6 +100,14 @@ public interface EditableMisoScene
      */
     public void clearObjectTile (int x, int y);
 
+    /**
+     * Clears the action string for the object tile at the specified
+     * coordinates. It may be assumed by the implementation that an object
+     * tile exists in the scene at the specified coordinates, thus callers
+     * should be sure only to call this method accordingly.
+     */
+    public void clearObjectAction (int x, int y);
+
     /**
      * Returns a reference to the miso scene model that reflects the
      * changes that have been made to this editable miso scene.
diff --git a/src/java/com/threerings/miso/tools/EditableMisoSceneImpl.java b/src/java/com/threerings/miso/tools/EditableMisoSceneImpl.java
index 336333a1e..af995e5bf 100644
--- a/src/java/com/threerings/miso/tools/EditableMisoSceneImpl.java
+++ b/src/java/com/threerings/miso/tools/EditableMisoSceneImpl.java
@@ -1,5 +1,5 @@
 //
-// $Id: EditableMisoSceneImpl.java,v 1.6 2001/12/05 07:29:06 mdb Exp $
+// $Id: EditableMisoSceneImpl.java,v 1.7 2002/01/30 18:28:32 mdb Exp $
 
 package com.threerings.miso.tools.scene;
 
@@ -109,6 +109,12 @@ public class EditableMisoSceneImpl
         // the default tiles
     }
 
+    // documentation inherited from interface
+    public void setObjectAction (int x, int y, String action)
+    {
+        _actions.put(objectKey(x, y), action);
+    }
+
     // documentation inherited
     public void clearBaseTile (int x, int y)
     {
@@ -137,6 +143,14 @@ public class EditableMisoSceneImpl
         }
         // clear it out in our non-sparse array
         _objectTileIds[_model.width*y + x] = 0;
+        // clear out any action for this tile as well
+        _actions.remove(objectKey(x, y));
+    }
+
+    // documentation inherited from interface
+    public void clearObjectAction (int x, int y)
+    {
+        _actions.remove(objectKey(x, y));
     }
 
     // documentation inherited
@@ -155,9 +169,10 @@ public class EditableMisoSceneImpl
             }
         }
 
-        // now create and populate the new tileid array
+        // now create and populate the new tileid and actions arrays
         int[] otids = new int[otileCount*3];
-        int otidx = 0;
+        String[] actions = new String[otileCount];
+        int otidx = 0, actidx = 0;
         for (int r = 0; r < rows; r++) {
             for (int c = 0; c < cols; c++) {
                 int tsid = _objectTileIds[_model.width*r + c];
@@ -167,11 +182,13 @@ public class EditableMisoSceneImpl
                 otids[otidx++] = c;
                 otids[otidx++] = r;
                 otids[otidx++] = tsid;
+                actions[actidx++] = (String)_actions.get(objectKey(c, r));
             }
         }
 
-        // stuff the new array into the model
+        // stuff the new arrays into the model
         _model.objectTileIds = otids;
+        _model.objectActions = actions;
 
         // and we're ready to roll
         return _model;
diff --git a/src/java/com/threerings/miso/tools/xml/MisoSceneRuleSet.java b/src/java/com/threerings/miso/tools/xml/MisoSceneRuleSet.java
index d3309ebd4..ffe044852 100644
--- a/src/java/com/threerings/miso/tools/xml/MisoSceneRuleSet.java
+++ b/src/java/com/threerings/miso/tools/xml/MisoSceneRuleSet.java
@@ -1,5 +1,5 @@
 //
-// $Id: MisoSceneRuleSet.java,v 1.4 2001/11/29 19:31:12 mdb Exp $
+// $Id: MisoSceneRuleSet.java,v 1.5 2002/01/30 18:28:32 mdb Exp $
 
 package com.threerings.miso.tools.scene.xml;
 
@@ -56,6 +56,8 @@ public class MisoSceneRuleSet extends RuleSetBase
                          new SetFieldRule(digester, "fringeTileIds"));
         digester.addRule(_prefix + "/object",
                          new SetFieldRule(digester, "objectTileIds"));
+        digester.addRule(_prefix + "/actions",
+                         new SetFieldRule(digester, "objectActions"));
     }
 
     /** The prefix at which me match our scenes. */
diff --git a/src/java/com/threerings/miso/tools/xml/MisoSceneWriter.java b/src/java/com/threerings/miso/tools/xml/MisoSceneWriter.java
index e75f8c3f7..82f21906c 100644
--- a/src/java/com/threerings/miso/tools/xml/MisoSceneWriter.java
+++ b/src/java/com/threerings/miso/tools/xml/MisoSceneWriter.java
@@ -1,5 +1,5 @@
 //
-// $Id: MisoSceneWriter.java,v 1.3 2001/11/29 06:36:28 mdb Exp $
+// $Id: MisoSceneWriter.java,v 1.4 2002/01/30 18:28:32 mdb Exp $
 
 package com.threerings.miso.tools.scene.xml;
 
@@ -44,5 +44,7 @@ public class MisoSceneWriter
                            StringUtil.toString(model.fringeTileIds, "", ""));
         writer.dataElement("object",
                            StringUtil.toString(model.objectTileIds, "", ""));
+        writer.dataElement("actions",
+                           StringUtil.joinEscaped(model.objectActions));
     }
 }