Grid.h

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/*
* This file is part of Project SkyFire https://www.projectskyfire.org.
* See LICENSE.md file for Copyright information
*/
 
#ifndef SKYFIRE_GRID_H
#define SKYFIRE_GRID_H
 
/*
  @class Grid
  Grid is a logical segment of the game world represented inside SkyFire.
  Grid is bind at compile time to a particular type of object which
  we call it the object of interested.  There are many types of loader,
  specially, dynamic loader, static loader, or on-demand loader.  There's
  a subtle difference between dynamic loader and on-demand loader but
  this is implementation specific to the loader class.  From the
  Grid's perspective, the loader meets its API requirement is suffice.
*/
 
#include "Define.h"
#include "TypeContainer.h"
#include "TypeContainerVisitor.h"
 
// forward declaration
template<class A, class T, class O> class GridLoader;
 
template
<
    class ACTIVE_OBJECT,
    class WORLD_OBJECT_TYPES,
    class GRID_OBJECT_TYPES
>
class Grid
{
    // allows the GridLoader to access its internals
    template<class A, class T, class O> friend class GridLoader;
public:
    ~Grid() { }

    template<class SPECIFIC_OBJECT> void AddWorldObject(SPECIFIC_OBJECT* obj)
    {
        i_objects.template insert<SPECIFIC_OBJECT>(obj);
        ASSERT(obj->IsInGrid());
    }

        //Actually an unlink is enough, no need to go through the container
        //template<class SPECIFIC_OBJECT> void RemoveWorldObject(SPECIFIC_OBJECT *obj)
        //{
        //    ASSERT(obj->GetGridRef().isValid());
        //    i_objects.template remove<SPECIFIC_OBJECT>(obj);
        //    ASSERT(!obj->GetGridRef().isValid());
        //}

            //void RefreshGrid(void) { /* TBI */}

                //void LockGrid(void) { /* TBI */ }

                    //void UnlockGrid(void) { /* TBI */ }
 
                    // Visit grid objects
    template<class T>
    void Visit(TypeContainerVisitor<T, TypeMapContainer<GRID_OBJECT_TYPES> >& visitor)
    {
        visitor.Visit(i_container);
    }
 
    // Visit world objects
    template<class T>
    void Visit(TypeContainerVisitor<T, TypeMapContainer<WORLD_OBJECT_TYPES> >& visitor)
    {
        visitor.Visit(i_objects);
    }

        //unsigned int ActiveObjectsInGrid(void) const { return i_objects.template Count<ACTIVE_OBJECT>(); }
    template<class T>
    uint32 GetWorldObjectCountInGrid() const
    {
        return i_objects.template Count<T>();
    }

    template<class SPECIFIC_OBJECT> void AddGridObject(SPECIFIC_OBJECT* obj)
    {
        i_container.template insert<SPECIFIC_OBJECT>(obj);
        ASSERT(obj->IsInGrid());
    }

        //template<class SPECIFIC_OBJECT> void RemoveGridObject(SPECIFIC_OBJECT *obj)
        //{
        //    ASSERT(obj->GetGridRef().isValid());
        //    i_container.template remove<SPECIFIC_OBJECT>(obj);
        //    ASSERT(!obj->GetGridRef().isValid());
        //}
 
        /*bool NoWorldObjectInGrid() const
        {
            return i_objects.GetElements().isEmpty();
        }
 
        bool NoGridObjectInGrid() const
        {
            return i_container.GetElements().isEmpty();
        }*/
 
private:
    TypeMapContainer<GRID_OBJECT_TYPES> i_container;
    TypeMapContainer<WORLD_OBJECT_TYPES> i_objects;
    //typedef std::set<void*> ActiveGridObjects;
    //ActiveGridObjects m_activeGridObjects;
};
#endif