- changed shadowmap setup so that the AABB tree is owned and controlled by the map, not the renderer.

Needed to properly separate game logic from backend implementation, the shadowmap had both in the same object thanks to the old setup.

src/maploader/maploader.cpp

@@ -3239,5 +3239,7 @@ void MapLoader::LoadLevel(MapData *map, const char *lumpname, int position)
 	PO_Init();				// Initialize the polyobjs
 	if (!Level->IsReentering())
 		Level->FinalizePortals();	// finalize line portals after polyobjects have been initialized. This info is needed for properly flagging them.
+
+	Level->aabbTree = new DoomLevelAABBTree(Level);
 }