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#pragma once
#include "BlockPlant.h"
#include "../FastRandom.h"
/** Common class that takes care of beetroots, carrots, potatoes and wheat */
template <NIBBLETYPE RipeMeta> class cBlockCropsHandler final : public cBlockPlant<true>
{
using Super = cBlockPlant<true>;
public:
using Super::Super;
private:
/** Calculate the number of seeds to drop when the crop is broken. */
static char CalculateSeedCount(char a_Min, char a_BaseRolls, unsigned char a_FortuneLevel)
{
std::binomial_distribution<> Binomial(a_BaseRolls + a_FortuneLevel, 0.57);
return static_cast<char>(a_Min + Binomial(GetRandomProvider().Engine()));
}
virtual cItems ConvertToPickups(const NIBBLETYPE a_BlockMeta, const cItem * const a_Tool) const 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);
case E_BLOCK_CROPS: return cItem(E_ITEM_SEEDS);
case E_BLOCK_CARROTS: return cItem(E_ITEM_CARROT);
case E_BLOCK_POTATOES: return cItem(E_ITEM_POTATO);
}
ASSERT(!"Unhandled block type");
return {};
}
// Fully grown, drop the crop's produce:
cItems Res;
switch (m_BlockType)
{
case E_BLOCK_BEETROOTS:
{
const auto SeedCount = CalculateSeedCount(0, 3, ToolFortuneLevel(a_Tool));
Res.Add(E_ITEM_BEETROOT_SEEDS, SeedCount);
Res.Add(E_ITEM_BEETROOT);
break;
}
case E_BLOCK_CROPS:
{
// https://minecraft.wiki/w/Seeds_(Wheat)
Res.Add(E_ITEM_WHEAT);
const auto SeedCount = CalculateSeedCount(1, 3, ToolFortuneLevel(a_Tool));
Res.Add(E_ITEM_SEEDS, SeedCount);
break;
}
case E_BLOCK_CARROTS:
{
// https://minecraft.wiki/w/Carrot#Breaking
const auto CarrotCount = CalculateSeedCount(1, 4, ToolFortuneLevel(a_Tool));
Res.Add(E_ITEM_CARROT, CarrotCount);
break;
}
case E_BLOCK_POTATOES:
{
// https://minecraft.wiki/w/Potato#Breaking
const auto PotatoCount = CalculateSeedCount(2, 3, ToolFortuneLevel(a_Tool));
Res.Add(E_ITEM_POTATO, PotatoCount);
if (rand.RandBool(0.02))
{
// https://minecraft.wiki/w/Poisonous_Potato#Obtaining
// With a 2% chance, drop a poisonous potato as well:
Res.Add(E_ITEM_POISONOUS_POTATO);
}
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) const override
{
const auto OldMeta = a_Chunk.GetMeta(a_RelPos);
const auto NewMeta = std::clamp<NIBBLETYPE>(static_cast<NIBBLETYPE>(OldMeta + a_NumStages), 0, RipeMeta);
a_Chunk.SetMeta(a_RelPos, NewMeta);
return NewMeta - OldMeta;
}
virtual bool CanBeAt(const cChunk & a_Chunk, const Vector3i a_Position, const NIBBLETYPE a_Meta) const override
{
return (a_Position.y > 0) && (a_Chunk.GetBlock(a_Position.addedY(-1)) == E_BLOCK_FARMLAND);
}
virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) const override
{
UNUSED(a_Meta);
return 7;
}
};
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