BlockWallSign.h

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#pragma once
 
#include "BlockHandler.h"
#include "../Chunk.h"
 
 
 
 
 
class cBlockWallSignHandler final :
    public cBlockHandler
{
    using Super = cBlockHandler;
 
public:
 
    using Super::Super;
 
private:
 
    virtual cItems ConvertToPickups(const NIBBLETYPE a_BlockMeta, const cItem * const a_Tool) const override
    {
        return cItem(E_ITEM_SIGN, 1, 0);
    }
 
 
 
 
 
    virtual bool CanBeAt(const cChunk & a_Chunk, const Vector3i a_Position, const NIBBLETYPE a_Meta) const override
    {
        auto NeighborPos = a_Position + GetOffsetBehindTheSign(a_Meta);
        BLOCKTYPE NeighborType;
        if (!a_Chunk.UnboundedRelGetBlockType(NeighborPos, NeighborType))
        {
            // The neighbor is not accessible (unloaded chunk), bail out without changing this
            return true;
        }
        return (NeighborType == E_BLOCK_WALLSIGN) || (NeighborType == E_BLOCK_SIGN_POST) || cBlockInfo::IsSolid(NeighborType);
    }
 
 
 
 
 
    static Vector3i GetOffsetBehindTheSign(NIBBLETYPE a_BlockMeta)
    {
        switch (a_BlockMeta)
        {
            case 2: return Vector3i( 0, 0,  1);
            case 3: return Vector3i( 0, 0, -1);
            case 4: return Vector3i( 1, 0,  0);
            case 5: return Vector3i(-1, 0,  0);
        }
        ASSERT(!"Invalid wallsign block meta");
        return Vector3i();
    }
 
 
 
 
 
    virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) const override
    {
        UNUSED(a_Meta);
        return 13;
    }
} ;