Separate our scene graph into user interface and geometry, reflect that in

the services we make available via the context. Added a sprite and path
framework not wildly unlike that in media but based around the JME
primitives.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3532 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/jme/sprite/Path.java

@@ -0,0 +1,51 @@
+//
+// $Id$
+//
+// Narya library - tools for developing networked games
+// Copyright (C) 2002-2005 Three Rings Design, Inc., All Rights Reserved
+// http://www.threerings.net/code/narya/
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.jme.sprite;
+
+import com.jme.scene.Controller;
+
+/**
+ * Defines a framework for moving sprites around and notifying interested
+ * parties when the sprite has completed its path or if the path has been
+ * cancelled.
+ */
+public abstract class Path extends Controller
+{
+    /**
+     * Creates and initializes this path with the sprite it will be
+     * manipulating.
+     */
+    protected Path (Sprite sprite)
+    {
+        _sprite = sprite;
+    }
+
+    /**
+     * Called when this path is removed from its sprite (either due to
+     * completion or cancellation).
+     */
+    public void wasRemoved ()
+    {
+    }
+
+    protected Sprite _sprite;
+}