X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Frender%2Fscene.h;fp=source%2Frender%2Fscene.h;h=305bf62aefd5a2ed3fb4748bf9258772643eb52b;hb=83ab54cf1339fcac560daa90496e6d4e956f7367;hp=639a467fa849cb526c19ac31744b957f820af7ea;hpb=05b77ce8469134f6dd6fad497f3ab21cdd4129b1;p=libs%2Fgl.git

diff --git a/source/render/scene.h b/source/render/scene.h
index 639a467f..305bf62a 100644
--- a/source/render/scene.h
+++ b/source/render/scene.h
@@ -2,6 +2,7 @@
 #define MSP_GL_SCENE_H_
 
 #include <vector>
+#include <msp/core/typeregistry.h>
 #include <msp/datafile/objectloader.h>
 #include "matrix.h"
 #include "renderable.h"
@@ -17,7 +18,7 @@ InstancedScene and OrderedScene.
 */
 class Scene: public Renderable
 {
-public:
+protected:
 	class Loader: public DataFile::CollectionObjectLoader<Scene>
 	{
 	public:
@@ -36,6 +37,38 @@ public:
 		void object_tagged(const std::string &, const std::string &);
 	};
 
+public:
+	class GenericLoader: public DataFile::Loader
+	{
+	private:
+		template<typename T>
+		struct CreateScene
+		{
+			void operator()(const std::string &, GenericLoader &) const;
+		};
+
+		DataFile::Collection &coll;
+		Scene *scene;
+		Loader *scene_loader;
+
+		static ActionMap shared_actions;
+
+	public:
+		GenericLoader(DataFile::Collection &);
+		~GenericLoader();
+
+		Scene *get_scene() { Scene *s = scene; scene = 0; return s; }
+	private:
+		virtual void init_actions();
+
+		void type(const DataFile::Symbol &);
+
+		friend class Scene;
+	};
+
+private:
+	typedef TypeRegistry<GenericLoader::CreateScene, GenericLoader &> SceneRegistry;
+
 protected:
 	// XXX If a loaded renderable is removed from the scene it needs to be removed from here as well
 	std::vector<Renderable *> owned_data;
@@ -55,8 +88,32 @@ public:
 protected:
 	bool setup_frustum(const Renderer &) const;
 	bool frustum_cull(const Renderable &) const;
+
+public:
+	template<typename T>
+	static void register_type(const std::string &);
+private:
+	static SceneRegistry &get_scene_registry();
 };
 
+template<typename T>
+void Scene::register_type(const std::string &kw)
+{
+	get_scene_registry().register_type<T>(kw);
+}
+
+template<typename T>
+void Scene::GenericLoader::CreateScene<T>::operator()(const std::string &, GenericLoader &ldr) const
+{
+	if(ldr.scene)
+		throw std::logic_error("Scene type was already specified");
+
+	T *scene = new T;
+	ldr.scene = scene;
+	ldr.scene_loader = new typename T::Loader(*scene, ldr.coll);
+	ldr.add_auxiliary_loader(*ldr.scene_loader);
+}
+
 } // namespace GL
 } // namespace Msp