BlockCrops.h

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#pragma once

#include "BlockPlant.h"
#include "../FastRandom.h"





template <NIBBLETYPE RipeMeta>
class cBlockCropsHandler:
    public cBlockPlant<true>
{
    using super = cBlockPlant<true>;

public:

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





    virtual cItems ConvertToPickups(NIBBLETYPE a_BlockMeta, cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool) override
    {
        auto & rand = GetRandomProvider();

        // If not fully grown, drop the "seed" of whatever is growing:
        if (a_BlockMeta < RipeMeta)
        {
            switch (m_BlockType)
            {
                case E_BLOCK_BEETROOTS: return cItem(E_ITEM_BEETROOT_SEEDS, 1, 0); break;
                case E_BLOCK_CROPS:     return cItem(E_ITEM_SEEDS,          1, 0); break;
                case E_BLOCK_CARROTS:   return cItem(E_ITEM_CARROT,         1, 0); break;
                case E_BLOCK_POTATOES:  return cItem(E_ITEM_POTATO,         1, 0); break;
            }
            ASSERT(!"Unhandled block type");
            return {};
        }

        // Fully grown, drop the crop's produce:
        cItems res;
        switch (m_BlockType)
        {
            case E_BLOCK_BEETROOTS:
            {
                char SeedCount = 1 + ((rand.RandInt<char>(2) + rand.RandInt<char>(2)) / 2);  // [1 .. 3] with high preference of 2
                res.Add(E_ITEM_BEETROOT_SEEDS, SeedCount, 0);
                char BeetrootCount = 1 + ((rand.RandInt<char>(2) + rand.RandInt<char>(2)) / 2);  // [1 .. 3] with high preference of 2
                res.Add(E_ITEM_BEETROOT, BeetrootCount, 0);
                break;
            }
            case E_BLOCK_CROPS:
            {
                res.Add(E_ITEM_WHEAT, 1, 0);
                res.Add(E_ITEM_SEEDS, 1 + ((rand.RandInt<char>(2) + rand.RandInt<char>(2)) / 2), 0);  // [1 .. 3] with high preference of 2
                break;
            }
            case E_BLOCK_CARROTS:
            {
                res.Add(E_ITEM_CARROT, 1 + ((rand.RandInt<char>(2) + rand.RandInt<char>(2)) / 2), 0);  // [1 .. 3] with high preference of 2
                break;
            }
            case E_BLOCK_POTATOES:
            {
                res.Add(E_ITEM_POTATO, 1 + ((rand.RandInt<char>(2) + rand.RandInt<char>(2)) / 2), 0);  // [1 .. 3] with high preference of 2
                if (rand.RandBool(0.05))
                {
                    // With a 5% chance, drop a poisonous potato as well
                    res.emplace_back(E_ITEM_POISONOUS_POTATO, 1, 0);
                }
                break;
            }
            default:
            {
                ASSERT(!"Unhandled block type");
                break;
            }
        }  // switch (m_BlockType)
        return res;
    }





    virtual int Grow(cChunk & a_Chunk, Vector3i a_RelPos, int a_NumStages = 1) override
    {
        auto oldMeta = a_Chunk.GetMeta(a_RelPos);
        if (oldMeta >= RipeMeta)
        {
            // Already ripe
            return 0;
        }
        auto newMeta = std::min<int>(oldMeta + a_NumStages, RipeMeta);
        ASSERT(newMeta > oldMeta);
        a_Chunk.GetWorld()->SetBlock(a_Chunk.RelativeToAbsolute(a_RelPos), m_BlockType, static_cast<NIBBLETYPE>(newMeta));
        return newMeta - oldMeta;
    }





    virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, int a_RelX, int a_RelY, int a_RelZ, const cChunk & a_Chunk) override
    {
        return ((a_RelY > 0) && (a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ) == E_BLOCK_FARMLAND));
    }



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