BlockTallGrass.h

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#pragma once

#include "BlockHandler.h"
#include "ChunkInterface.h"





class cBlockTallGrassHandler:
    public cBlockHandler
{
    using super = cBlockHandler;

public:

    cBlockTallGrassHandler(BLOCKTYPE a_BlockType):
        super(a_BlockType)
    {
    }





    virtual bool DoesIgnoreBuildCollision(cChunkInterface & a_ChunkInterface, Vector3i a_Pos, cPlayer & a_Player, NIBBLETYPE a_Meta) override
    {
        return true;
    }





    virtual cItems ConvertToPickups(NIBBLETYPE a_BlockMeta, cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool) override
    {
        // If using shears, drop self:
        if ((a_Tool != nullptr) && (a_Tool->m_ItemType == E_ITEM_SHEARS))
        {
            return cItem(m_BlockType, 1, a_BlockMeta);
        }

        // Drop seeds, sometimes:
        if (GetRandomProvider().RandBool(0.125))
        {
            return cItem(E_ITEM_SEEDS);
        }
        return {};
    }





    virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
    {
        if (a_RelY <= 0)
        {
            return false;
        }

        BLOCKTYPE BelowBlock = a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ);
        return IsBlockTypeOfDirt(BelowBlock);
    }





    virtual int Grow(cChunk & a_Chunk, Vector3i a_RelPos, int a_NumStages = 1) override
    {
        if (a_RelPos.y > (cChunkDef::Height - 2))
        {
            return 0;
        }
        auto blockMeta = a_Chunk.GetMeta(a_RelPos);
        NIBBLETYPE largeFlowerMeta;
        switch (blockMeta)
        {
            case E_META_TALL_GRASS_GRASS: largeFlowerMeta = E_META_BIG_FLOWER_DOUBLE_TALL_GRASS; break;
            case E_META_TALL_GRASS_FERN:  largeFlowerMeta = E_META_BIG_FLOWER_LARGE_FERN; break;
            default:                      return 0;
        }
        a_Chunk.SetBlock(a_RelPos,           E_BLOCK_BIG_FLOWER, largeFlowerMeta);
        a_Chunk.SetBlock(a_RelPos.addedY(1), E_BLOCK_BIG_FLOWER, E_META_BIG_FLOWER_TOP);
        return 1;
    }





    virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
    {
        UNUSED(a_Meta);
        return 7;
    }
} ;