scene_graph.hpp

/*
    Entity Component System: Base Scene Graph.
    Copyright (C) 2015 Denis BOURGE

    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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
    USA
*/

#ifndef HX3D_ECS_SCENEGRAPH
#define HX3D_ECS_SCENEGRAPH

#include "hx3d/utils/ptr.hpp"
#include "hx3d/graphics/base_batch.hpp"
#include "hx3d/ecs/engine.hpp"

#include <string>
#include <set>
#include <map>

namespace hx3d {
namespace ecs {

class Node;

class SceneGraph {
public:
  SceneGraph();
  ~SceneGraph();

  template <class T, class... Args>
  Ptr<T> createAtRoot(Args... args);

  template <class T, class... Args>
  Ptr<T> create(const std::string path, Args... args);

  void remove(const std::string path);

  template <class T>
  Ptr<T> fetch(const std::string path);

  Ptr<Node> getRoot();

  unsigned int getNodeCount();

  void showIndices();

  void draw(graphics::BaseBatch& batch);

  void update(const float delta);

  void setEntityMode(bool enabled);

protected:
  Ptr<Node> _root;
  std::map<std::string, Ptr<Node>> _indices;
  Engine _engine;
  bool _entityEnabled;

  void addIndex(const Ptr<Node>& object);

  Ptr<Node> pathExists(const std::string path);

  void internalRemove(const Ptr<Node>& node);

  template <class T, class... Args>
  Ptr<T> createNodeChild(const Ptr<Node>& container, Args... args);
};

} /* ecs */
} /* hx3d */

#include "hx3d/ecs/_inline/scene_graph.inl.hpp"

#endif