#ifndef _3D_ARRAY_CHECKER_H_
#define _3D_ARRAY_CHECKER_H_


#include <Item/ItemStructure.h>


class C3DArrayChecker
{
public:

    C3DArrayChecker(TakeType::TakeSource eTakeSource) : m_eTakeSource(eTakeSource) { }

    virtual void Set(Item::ItemPos itemPos, int nXSize, int nYSize) = 0;
    virtual bool Test(Item::ItemPos itemPos, int nXSize, int nYSize) = 0;
    virtual bool FindEmptyPos(Item::ItemPos& foundPos, int nXSize, int nYSize) = 0;

protected:

    TakeType::TakeSource m_eTakeSource;
};

template<int tX, int tY, int tZ>
class C3DItemArrayChecker : public C3DArrayChecker
{
public:

    C3DItemArrayChecker(TakeType::TakeSource eTakeSource) : C3DArrayChecker(eTakeSource)
    { 
        memset(m_Set, 0, sizeof(char) * tX * tY * tZ);
    }

    virtual void Set(Item::ItemPos itemPos, int nXSize, int nYSize)
    {
        int nZ = itemPos.GetZIndex();

        if(nZ < tZ)
        {
            int nY = itemPos.GetYIndex();
            int nX = itemPos.GetXIndex();

            int nMaxY = std::min(nY + nYSize, tY);
            int nMaxX = std::min(nX + nXSize, tX);

            for(nY = itemPos.GetYIndex(); nY < nMaxY; ++nY)
            {
                for(nX = itemPos.GetXIndex(); nX < nMaxX; ++nX) 
                { 
                    m_Set[nX][nY][nZ] = 1; 
                }
            }
        }
    }

    virtual bool Test(Item::ItemPos itemPos, int nXSize, int nYSize)
    {
        int nZ = itemPos.GetZIndex();
        int nY = itemPos.GetYIndex();
        int nX = itemPos.GetXIndex();

        int nMaxY = std::min(nY + nYSize, tY);
        int nMaxX = std::min(nX + nXSize, tX);

        if(tZ <= nZ || tY <= nMaxY || tX < nMaxX) 
        {
            return false; 
        }

        for(nY = itemPos.GetYIndex(); nY < nMaxY; ++nY)
        {
            for(nX = itemPos.GetXIndex(); nX < nMaxX; ++nX)
            {
                if(0 != m_Set[nX][nY][nZ]) 
                {
                    return false; 
                }
            }
        }

        return true;
    }

    virtual bool FindEmptyPos(Item::ItemPos& foundPos, int nXSize, int nYSize)
    {
        for(int nZ = 0; nZ < tZ; ++nZ)
        {
            for(int nY = 0; nY < tY; ++nY)
            {
                for(int nX = 0; nX < tX; ++nX)
                {                    
                    foundPos.SetPos(nX, nY, nZ);
                    if(Test(foundPos, nXSize, nYSize)) 
                    {
                        foundPos.m_cPos = static_cast<unsigned short>(m_eTakeSource);                        
                        return true; 
                    }
                }
            }
        }

        return false;
    }

private:

    char m_Set[tX][tY][tZ];
};


#endif