139 lines
3.0 KiB
C++
139 lines
3.0 KiB
C++
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#pragma once
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#include "BlockPlant.h"
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#include "../FastRandom.h"
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/** Common class that takes care of beetroots, carrots, potatoes and wheat */
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template <NIBBLETYPE RipeMeta>
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class cBlockCropsHandler final :
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public cBlockPlant<true>
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{
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using Super = cBlockPlant<true>;
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public:
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using Super::Super;
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private:
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/** Calculate the number of seeds to drop when the crop is broken. */
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static char CalculateSeedCount(char a_Min, char a_BaseRolls, unsigned char a_FortuneLevel)
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{
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std::binomial_distribution<> Binomial(a_BaseRolls + a_FortuneLevel, 0.57);
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return static_cast<char>(a_Min + Binomial(GetRandomProvider().Engine()));
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}
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virtual cItems ConvertToPickups(NIBBLETYPE a_BlockMeta, const cEntity * a_Digger, const cItem * a_Tool) const override
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{
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auto & rand = GetRandomProvider();
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// If not fully grown, drop the "seed" of whatever is growing:
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if (a_BlockMeta < RipeMeta)
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{
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switch (m_BlockType)
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{
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case E_BLOCK_BEETROOTS: return cItem(E_ITEM_BEETROOT_SEEDS);
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case E_BLOCK_CROPS: return cItem(E_ITEM_SEEDS);
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case E_BLOCK_CARROTS: return cItem(E_ITEM_CARROT);
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case E_BLOCK_POTATOES: return cItem(E_ITEM_POTATO);
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}
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ASSERT(!"Unhandled block type");
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return {};
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}
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// Fully grown, drop the crop's produce:
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cItems res;
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switch (m_BlockType)
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{
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case E_BLOCK_BEETROOTS:
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{
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const auto SeedCount = CalculateSeedCount(0, 3, ToolFortuneLevel(a_Tool));
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res.Add(E_ITEM_BEETROOT_SEEDS, SeedCount);
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res.Add(E_ITEM_BEETROOT);
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break;
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}
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case E_BLOCK_CROPS:
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{
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res.Add(E_ITEM_WHEAT);
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const auto SeedCount = CalculateSeedCount(1, 3, ToolFortuneLevel(a_Tool));
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res.Add(E_ITEM_SEEDS, SeedCount);
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break;
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}
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case E_BLOCK_CARROTS:
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{
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const auto CarrotCount = CalculateSeedCount(1, 4, ToolFortuneLevel(a_Tool));
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res.Add(E_ITEM_CARROT, CarrotCount);
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break;
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}
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case E_BLOCK_POTATOES:
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{
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const auto PotatoCount = CalculateSeedCount(2, 3, ToolFortuneLevel(a_Tool));
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res.Add(E_ITEM_POTATO, PotatoCount);
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if (rand.RandBool(0.02))
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{
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// With a 2% chance, drop a poisonous potato as well
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res.Add(E_ITEM_POISONOUS_POTATO);
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}
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break;
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}
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default:
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{
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ASSERT(!"Unhandled block type");
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break;
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}
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} // switch (m_BlockType)
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return res;
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}
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virtual int Grow(cChunk & a_Chunk, Vector3i a_RelPos, int a_NumStages = 1) const override
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{
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auto oldMeta = a_Chunk.GetMeta(a_RelPos);
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if (oldMeta >= RipeMeta)
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{
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// Already ripe
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return 0;
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}
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auto newMeta = std::min<int>(oldMeta + a_NumStages, RipeMeta);
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ASSERT(newMeta > oldMeta);
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a_Chunk.GetWorld()->SetBlock(a_Chunk.RelativeToAbsolute(a_RelPos), m_BlockType, static_cast<NIBBLETYPE>(newMeta));
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return newMeta - oldMeta;
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}
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virtual bool CanBeAt(cChunkInterface & a_ChunkInterface, const Vector3i a_RelPos, const cChunk & a_Chunk) const override
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{
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return ((a_RelPos.y > 0) && (a_Chunk.GetBlock(a_RelPos.addedY(-1)) == E_BLOCK_FARMLAND));
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}
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virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) const override
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{
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UNUSED(a_Meta);
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return 7;
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}
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} ;
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