BlockCocoaPod.h

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#pragma once

#include "BlockHandler.h"
#include "../FastRandom.h"





class cBlockCocoaPodHandler :
    public cBlockHandler
{
    using super = cBlockHandler;

public:
    cBlockCocoaPodHandler(BLOCKTYPE a_BlockType):
        super(a_BlockType)
    {
    }





    virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
    {
        eBlockFace BlockFace = MetaToBlockFace(a_Chunk.GetMeta(a_RelX, a_RelY, a_RelZ));
        AddFaceDirection(a_RelX, a_RelY, a_RelZ, BlockFace, true);

        BLOCKTYPE BlockType;
        NIBBLETYPE BlockMeta;
        a_Chunk.UnboundedRelGetBlock(a_RelX, a_RelY, a_RelZ, BlockType, BlockMeta);

        return ((BlockType == E_BLOCK_LOG) && ((BlockMeta & 0x3) == E_META_LOG_JUNGLE));
    }





    virtual void OnUpdate(cChunkInterface & cChunkInterface, cWorldInterface & a_WorldInterface, cBlockPluginInterface & a_PluginInterface, cChunk & a_Chunk, int a_RelX, int a_RelY, int a_RelZ) override
    {
        if (GetRandomProvider().RandBool(0.20))
        {
            Grow(a_Chunk, {a_RelX, a_RelY, a_RelZ});
        }
    }





    virtual cItems ConvertToPickups(NIBBLETYPE a_BlockMeta, cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool) override
    {
        // If fully grown, give 3 items, otherwise just one:
        auto growState = a_BlockMeta >> 2;
        return cItem(E_ITEM_DYE, ((growState >= 2) ? 3 : 1), E_META_DYE_BROWN);
    }





    virtual int Grow(cChunk & a_Chunk, Vector3i a_RelPos, int a_NumStages = 1) override
    {
        auto meta = a_Chunk.GetMeta(a_RelPos);
        auto typeMeta = meta & 0x03;
        auto growState = meta >> 2;

        if (growState >= 3)
        {
            return 0;
        }
        auto newState = std::min(growState + a_NumStages, 3);
        a_Chunk.SetMeta(a_RelPos, static_cast<NIBBLETYPE>(newState << 2 | typeMeta));
        return newState - growState;
    }





    static eBlockFace MetaToBlockFace(NIBBLETYPE a_Meta)
    {
        switch (a_Meta & 0x03)
        {
            case 0: return BLOCK_FACE_ZM;
            case 1: return BLOCK_FACE_XP;
            case 2: return BLOCK_FACE_ZP;
            case 3: return BLOCK_FACE_XM;
            default:
            {
                ASSERT(!"Bad meta");
                return BLOCK_FACE_NONE;
            }
        }
    }





    static NIBBLETYPE BlockFaceToMeta(eBlockFace a_BlockFace)
    {
        switch (a_BlockFace)
        {
            case BLOCK_FACE_ZM: return 0;
            case BLOCK_FACE_XM: return 3;
            case BLOCK_FACE_XP: return 1;
            case BLOCK_FACE_ZP: return 2;
            case BLOCK_FACE_NONE:
            case BLOCK_FACE_YM:
            case BLOCK_FACE_YP:
            {
                ASSERT(!"Unknown face");
                return 0;
            }
        }
        UNREACHABLE("Unsupported block face");
    }





    virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
    {
        UNUSED(a_Meta);
        return 34;
    }
} ;