databasechange.h

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/*
* Copyright 2016 Autodesk, Inc. All rights reserved.
* Use of this software is subject to the terms of the Autodesk license agreement and any attachments or Appendices thereto provided at the time of installation or download,
* or which otherwise accompanies this software in either electronic or hard copy form, or which is signed by you and accepted by Autodesk.
*/

#pragma once

#include "gwnavruntime/navmesh/navmeshtypes.h"
#include "gwnavruntime/containers/kyarray.h"
#include "gwnavruntime/kernel/SF_RefCount.h"

namespace Kaim
{

class NavData;


class DatabaseChangeIdx
{
public:
    DatabaseChangeIdx();
    KyUInt32 m_navMeshChangeIdx;       // incremented if NavMesh changed during Database::Update()
    KyUInt32 m_navGraphChangeIdx;      // incremented if NavGraphs were added/removed during Database::Update()
    KyUInt32 m_abstractGraphChangeIdx; // incremented if NavGraphs changed during Database::Update()
    KyUInt32 m_anyChangeIdx;
};


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

    void ClearChange();

    // ChangeCellBoxes
    const CellBox& GetAddRemoveNavMeshChangeCellBox()   const { return m_addRemoveNavMeshChangeCellBox; }
    const CellBox& GetTagVolumeNavMeshChangeCellBox()   const { return m_tagVolumeNavMeshChangeCellBox; }
    const CellBox& GetNavMeshChangeCellBox()            const { return m_navMeshChangeCellBox; }
    const CellBox& GetNavGraphChangeCellBox()           const { return m_navGraphChangeCellBox; }
    const CellBox& GetAbstractGraphChangeCellBox()      const { return m_abstractGraphChangeCellBox; }
    const CellBox& GetAnyChangeCellBox()                const { return m_anyChangeCellBox; }

    // ChangeIdx
    KyUInt32 GetNavMeshChangeIdx()       const { return m_changeIdx.m_navMeshChangeIdx; }
    KyUInt32 GetNavGraphChangeIdx()      const { return m_changeIdx.m_navGraphChangeIdx; }
    KyUInt32 GetAbstractGraphChangeIdx() const { return m_changeIdx.m_abstractGraphChangeIdx; }
    KyUInt32 GetAnyChangeIdx()           const { return m_changeIdx.m_anyChangeIdx; }

    // IsChanged
    bool IsAddRemoveNavMeshChanged()       const { return m_addRemoveNavMeshChanged; }
    bool IsTagVolumeNavMeshChangeCellBox() const { return m_tagVolumeNavMeshChanged; }
    bool IsNavMeshChanged()                const { return m_navMeshChanged; }
    bool IsNavGraphChanged()               const { return m_navGraphChanged; }
    bool IsAbstractGraphChanged()          const { return m_abstractGraphChanged; }
    bool IsAnyChanged()                    const { return m_anyChanged; }

    const KyArray<Ptr<NavData> >& GetAddedNavDatas()   const { return m_addedNavDatas;   }
    const KyArray<Ptr<NavData> >& GetRemovedNavDatas() const { return m_removedNavDatas; }

protected:
    DatabaseChangeIdx m_changeIdx;

    // navMesh changes
    CellBox m_addRemoveNavMeshChangeCellBox;
    CellBox m_tagVolumeNavMeshChangeCellBox;
    CellBox m_navMeshChangeCellBox;
    CellBox m_navGraphChangeCellBox;
    CellBox m_abstractGraphChangeCellBox;
    CellBox m_anyChangeCellBox;

    bool m_addRemoveNavMeshChanged;
    bool m_tagVolumeNavMeshChanged;
    bool m_navMeshChanged;
    bool m_navGraphChanged;
    bool m_abstractGraphChanged;
    bool m_anyChanged;

    KyArray<Ptr<NavData> > m_addedNavDatas;
    KyArray<Ptr<NavData> > m_removedNavDatas;

    friend class DatabaseChangeInProgress;
};

class IDatabaseChangeListener : public RefCountBase<IDatabaseChangeListener, MemStat_WorldFwk>
{
public:
    virtual ~IDatabaseChangeListener() {}
    virtual void OnDatabaseChange(const DatabaseChange& change) = 0;
};

// DatabaseChangeInProgress and DatabaseChange could be the same class
// but it's more clear to have a dedicated class to the InProgress use case
class DatabaseChangeInProgress : public DatabaseChange
{
public:
    // Add NavMesh change
    void AddRemoveNavMeshChange(const CellBox& cellBox);
    void TagVolumeNavMeshChange(const CellBox& cellBox);

    void NavMeshChange(const CellBox& cellBox);
    //void NavMeshChange();

    // Add NavGraph change
    void NavGraphChange(const CellBox& cellBox);
    void NavGraphChange();

    // Add AbstractGraph change
    void AbstractGraphChange(const CellBox& cellBox);
    void AbstractGraphChange();

    void PushAddedNavData(Ptr<NavData>& navData);
    void PushRemovedNavData(Ptr<NavData>& navData);
    void ComputeAnyChangeCellBox();

    void CopyChangeIdxTo(DatabaseChangeIdx& changeIdx) const { changeIdx = m_changeIdx; }

    void AggregateTo(DatabaseChange& change) const;

private:
    void AnyChange(const CellBox& cellBox);
    void AnyChange();
};




}