Further restructuring of the scenery loading code.

src/Main/main.cxx

@@ -173,11 +173,12 @@ void fgReshape( int width, int height );
 
 // ssg variables
 ssgRoot *scene = NULL;
-ssgBranch *terrain = NULL;
+ssgBranch *terrain_branch = NULL;
+ssgBranch *gnd_lights_branch = NULL;
+ssgBranch *rwy_lights_branch = NULL;
 
 ssgRoot *lighting = NULL;
-ssgBranch *ground = NULL;
-ssgBranch *airport = NULL;
+// ssgBranch *airport = NULL;
 
 #ifdef FG_NETWORK_OLK
 ssgSelector *fgd_sel = NULL;
@@ -1552,18 +1553,22 @@ int mainLoop( int argc, char **argv ) {
     globals->set_mag( magvar );
 
     // Terrain branch
-    terrain = new ssgBranch;
-    terrain->setName( "Terrain" );
-    scene->addKid( terrain );
+    terrain_branch = new ssgBranch;
+    terrain_branch->setName( "Terrain" );
+    scene->addKid( terrain_branch );
 
     // Lighting
-    ground = new ssgBranch;
-    ground->setName( "Ground Lighting" );
-    lighting->addKid( ground );
+    gnd_lights_branch = new ssgBranch;
+    gnd_lights_branch->setName( "Ground Lighting" );
+    lighting->addKid( gnd_lights_branch );
 
-    airport = new ssgBranch;
-    airport->setName( "Airport Lighting" );
-    lighting->addKid( airport );
+    rwy_lights_branch = new ssgBranch;
+    rwy_lights_branch->setName( "Runway Lighting" );
+    lighting->addKid( rwy_lights_branch );
+
+    // airport = new ssgBranch;
+    // airport->setName( "Airport Lighting" );
+    // lighting->addKid( airport );
 
     // ADA
     fgLoadDCS();
@@ -1812,7 +1817,7 @@ void fgLoadDCS(void) {
 						    //dummy_tile->lightmaps_sequence->setTraversalMaskBits( SSGTRAV_HOT );
 							lightpoints_transform->addKid( dummy_tile->lightmaps_sequence );
 							lightpoints_transform->ref();
-							ground->addKid( lightpoints_transform );
+							gnd_lights_branch->addKid( lightpoints_transform );
 						} 
 					} //if in1 
                 } //if objc
@@ -1826,7 +1831,7 @@ void fgLoadDCS(void) {
 
         SG_LOG ( SG_TERRAIN, SG_ALERT, "Finished object processing." );
 
-        terrain->addKid( ship_sel ); //add selector node to root node 
+        terrain_branch->addKid( ship_sel ); //add selector node to root node 
     }
 
     return;

src/Objects/obj.cxx

@@ -930,18 +930,25 @@ bool fgBinObjLoad( const string& path, const bool is_base,
     point_list normals = obj.get_normals();
     point_list texcoords = obj.get_texcoords();
 
-    string material;
+    string material, tmp_mat;
     int_list vertex_index;
     int_list tex_index;
 
     int i;
+    bool is_lighting = false;
 
     // generate points
     string_list pt_materials = obj.get_pt_materials();
     group_list pts_v = obj.get_pts_v();
     for ( i = 0; i < (int)pts_v.size(); ++i ) {
         cout << "pts_v.size() = " << pts_v.size() << endl;
-	material = pt_materials[i];
+	tmp_mat = pt_materials[i];
+	if ( tmp_mat.substr(0, 3) == "RWY" ) {
+	    material = "LIGHTS";
+	    is_lighting = true;
+	} else {
+	    material = tmp_mat;
+	}
 	vertex_index = pts_v[i];
 	tex_index.clear();
 	ssgLeaf *leaf = gen_leaf( path, GL_POINTS, material,
@@ -949,7 +956,11 @@ bool fgBinObjLoad( const string& path, const bool is_base,
 				  vertex_index, tex_index,
 				  false, ground_lights );
 
-	geometry->addKid( leaf );
+	if ( is_lighting ) {
+	    rwy_lights->addKid( leaf );
+	} else {
+	    geometry->addKid( leaf );
+	}
     }
 
     // generate triangles

src/Scenery/hitlist.cxx

@@ -27,7 +27,7 @@
 #include "hitlist.hxx"
 
 
-extern ssgBranch *terrain;
+extern ssgBranch *terrain_branch;
 
 #if 0
 // check to see if the intersection point is
@@ -558,7 +558,7 @@ bool fgCurrentElev( sgdVec3 abs_view_pos, sgdVec3 scenery_center,
     sgdCopyVec3(orig, view_pos );
     sgdCopyVec3(dir, abs_view_pos );
 
-    hit_list->Intersect( terrain, orig, dir );
+    hit_list->Intersect( terrain_branch, orig, dir );
 
     int this_hit=0;
     Point3D geoc;

src/Scenery/newcache.cxx

@@ -183,7 +183,7 @@ bool FGNewCache::make_space() {
 // Clear all completely loaded tiles (ignores partially loaded tiles)
 void FGNewCache::clear_cache() {
     // This is a hack that should really get cleaned up at some point
-    extern ssgBranch *terrain;
+    extern ssgBranch *terrain_branch;
 
     tile_map_iterator current = tile_cache.begin();
     tile_map_iterator end = tile_cache.end();
@@ -199,7 +199,7 @@ void FGNewCache::clear_cache() {
     }
 
     // and ... just in case we missed something ... 
-    terrain->removeAllKids();
+    terrain_branch->removeAllKids();
 }
 
 

src/Scenery/tileentry.cxx

@@ -1029,6 +1029,10 @@ FGTileEntry::load( const SGPath& base, bool is_base )
 
     ssgBranch* new_tile = new ssgBranch;
 
+    // runway lights
+    rwy_lights_transform = NULL;
+    rwy_lights_range = NULL;
+
     // Check for master .stg (scene terra gear) file
     SGPath stg_name = basename;
     stg_name.concat( ".stg" );
@@ -1382,12 +1386,14 @@ FGTileEntry::load( const SGPath& base, bool is_base )
 
 
 void
-FGTileEntry::add_ssg_nodes( ssgBranch* terrain, ssgBranch* ground )
+FGTileEntry::add_ssg_nodes( ssgBranch* terrain_branch,
+			    ssgBranch* gnd_lights_branch,
+			    ssgBranch* rwy_lights_branch )
 {
     // bump up the ref count so we can remove this later without
     // having ssg try to free the memory.
     terra_transform->ref();
-    terrain->addKid( terra_transform );
+    terrain_branch->addKid( terra_transform );
 
     SG_LOG( SG_TERRAIN, SG_DEBUG,
             "connected a tile into scene graph.  terra_transform = "
@@ -1395,11 +1401,18 @@ FGTileEntry::add_ssg_nodes( ssgBranch* terrain, ssgBranch* ground )
     SG_LOG( SG_TERRAIN, SG_DEBUG, "num parents now = "
             << terra_transform->getNumParents() );
 
-    if ( gnd_lights_transform != 0 ) {
+    if ( gnd_lights_transform != NULL ) {
 	// bump up the ref count so we can remove this later without
 	// having ssg try to free the memory.
 	gnd_lights_transform->ref();
-	ground->addKid( gnd_lights_transform );
+	gnd_lights_branch->addKid( gnd_lights_transform );
+    }
+
+    if ( rwy_lights_transform != NULL ) {
+	// bump up the ref count so we can remove this later without
+	// having ssg try to free the memory.
+	rwy_lights_transform->ref();
+	rwy_lights_branch->addKid( rwy_lights_transform );
     }
 
     // ADA
@@ -1407,7 +1420,7 @@ FGTileEntry::add_ssg_nodes( ssgBranch* terrain, ssgBranch* ground )
 	// bump up the ref count so we can remove this later without
 	// having ssg try to free the memory.
 	lightmaps_transform->ref();
-	ground->addKid( lightmaps_transform );
+	gnd_lights_branch->addKid( lightmaps_transform );
     }
     // ADA
 

src/Scenery/tileentry.hxx

@@ -255,7 +255,9 @@ public:
     /**
      * Add terrain mesh and ground lighting to scene graph.
      */
-    void add_ssg_nodes( ssgBranch* terrain, ssgBranch* ground );
+    void add_ssg_nodes( ssgBranch* terrain_branch,
+			ssgBranch* gnd_lights_branch,
+			ssgBranch* rwy_lights_branch );
 
     /**
      * disconnect terrain mesh and ground lighting nodes from scene

src/Scenery/tilemgr.cxx

@@ -52,8 +52,9 @@
 #define TEST_LAST_HIT_CACHE
 
 extern ssgRoot *scene;
-extern ssgBranch *terrain;
-extern ssgBranch *ground;
+extern ssgBranch *terrain_branch;      // branch that holds world geometry
+extern ssgBranch *gnd_lights_branch;   // branch that holds ground lighting
+extern ssgBranch *rwy_lights_branch;   // branch that holds runway lighting
 
 // the tile manager
 FGTileMgr global_tile_mgr;
@@ -333,7 +334,9 @@ int FGTileMgr::update( double lon, double lat ) {
 	FGTileEntry* e = attach_queue.front();
 	attach_queue.pop();
 #endif
-	e->add_ssg_nodes( terrain, ground );
+	e->add_ssg_nodes( terrain_branch,
+			  gnd_lights_branch,
+			  rwy_lights_branch );
 	// cout << "Adding ssg nodes for "
     }