From Don Tidrow, "I added some code to assign the archive pointer in TXPnode

with the archive that ReaderWriterTXP actually loads.  I also added a
function in TXPArchive to help in manipulating the lightpoints."

src/osgPlugins/txp/ReaderWriterTXP.cpp

@@ -44,7 +44,7 @@ osgDB::ReaderWriter::ReadResult ReaderWriterTXP::local_readNode(const std::strin
             {
                 int id = _archiveId++;
                 archive->setId(id);
-                getArchive(id,osgDB::getFilePath(fileName));
+                txpNode->setArchive(getArchive(id,osgDB::getFilePath(fileName)));
             }
             return txpNode.get();
         }

src/osgPlugins/txp/TXPArchive.h

@@ -89,6 +89,8 @@ public:
     // Add light attrib
     void addLightAttribute(osgSim::LightPointNode* lpn, osg::StateSet* fallback , const osg::Vec3& attitude);
     
+    int getNumLightAttributes() { return _lights.size(); }
+
     // Get light attrib
     inline DeferredLightAttribute& getLightAttribute(unsigned int i)
     {

src/osgPlugins/txp/TXPNode.h

@@ -67,6 +67,8 @@ public:
     
     TXPArchive* getArchive();
 
+    void setArchive(TXPArchive* archive) { _archive = archive; }
+    
 protected:
 
     virtual ~TXPNode();