403 lines
10 KiB
C++
403 lines
10 KiB
C++
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// PieceModifier.cpp
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// Implements the various classes descending from cPiece::cPieceModifier
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#include "Globals.h"
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#include "PieceModifier.h"
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#include "../Noise/Noise.h"
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// Constant that is added to seed
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static const int SEED_OFFSET = 135 * 13;
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// Emit a warning if the first param is true
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#define CONDWARNING(ShouldLog, Fmt, ...) \
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do { \
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if (ShouldLog) \
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{ \
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LOGWARNING(Fmt, __VA_ARGS__); \
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} \
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} while (false)
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////////////////////////////////////////////////////////////////////////////////
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/** A modifier which is pseudo-randomly replacing blocks to other types and metas. */
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class cPieceModifierRandomizeBlocks:
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public cPiece::cPieceModifier
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{
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public:
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cPieceModifierRandomizeBlocks(void) :
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m_Seed()
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{
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}
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virtual bool InitializeFromString(const AString & a_Params, bool a_LogWarnings) override
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{
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m_AllWeights = 0;
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AString Params = a_Params;
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/** BlocksToReplace parsing */
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auto idxPipe = Params.find('|');
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if (idxPipe != AString::npos)
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{
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AString blocksToReplaceStr = Params.substr(0, idxPipe);
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auto blocksToReplace = StringSplitAndTrim(blocksToReplaceStr, ",");
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for (size_t i = 0; i < blocksToReplace.size(); i++)
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{
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BLOCKTYPE blockType = static_cast<BLOCKTYPE>(BlockStringToType(blocksToReplace[i]));
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if ((blockType == E_BLOCK_AIR) && !NoCaseCompare(blocksToReplace[i], "Air"))
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{
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CONDWARNING(a_LogWarnings, "Cannot parse block type from string \"%s\"!", blocksToReplace[i].c_str());
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return false;
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}
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m_BlocksToReplace[blockType] = 1;
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}
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Params = Params.substr(idxPipe + 1, Params.length() - 1);
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}
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if (m_BlocksToReplace.size() == 0)
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{
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CONDWARNING(a_LogWarnings, "You must specify at least one block to replace%s!", "");
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return false;
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}
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/** Meta params parsing */
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auto idxSqBracketStart = Params.find('[');
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auto idxSqBracketStartLast = Params.find_last_of('[');
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bool isMultiMeta = false;
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if ((idxSqBracketStart != idxSqBracketStartLast) && (idxSqBracketStartLast != Params.length() - 1))
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{
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// Meta per block type
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isMultiMeta = true;
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}
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else
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{
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auto idxSqBracketEnd = Params.find(']');
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if ((idxSqBracketEnd == Params.length() - 1) && (idxSqBracketStart != AString::npos))
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{
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AString metaParamsStr = Params.substr(idxSqBracketStart + 1, Params.length() - idxSqBracketStart - 2);
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std::array<int, 4> metaParamsInt;
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if (!ParseMeta(metaParamsStr, metaParamsInt, a_LogWarnings))
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{
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return false;
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}
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m_MinMeta = metaParamsInt[0];
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m_MaxMeta = metaParamsInt[1];
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m_MinNoiseMeta = metaParamsInt[2];
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m_MaxNoiseMeta = metaParamsInt[3];
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Params = Params.substr(0, idxSqBracketStart);
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}
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}
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// BlocksToRandomize parsing
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auto BlocksToRandomize = StringSplitAndTrim(Params, ";");
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for (size_t i = 0; i < BlocksToRandomize.size(); i++)
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{
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AString block = BlocksToRandomize[i];
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cRandomizedBlock Block{};
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if (isMultiMeta)
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{
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auto sqBrStart = block.find('[');
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if (sqBrStart != AString::npos)
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{
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auto sqBrEnd = block.find(']');
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if (sqBrEnd != block.size() - 1)
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{
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CONDWARNING(a_LogWarnings, "If present, block meta params must be at the end of block to randomize definition \"%s\"!", block.c_str());
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return false;
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}
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AString metaParamsStr = block.substr(sqBrStart + 1, block.size() - sqBrStart - 2);
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std::array<int, 4> metaParamsInt;
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if (!ParseMeta(metaParamsStr, metaParamsInt, a_LogWarnings))
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{
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return false;
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}
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Block.m_MinMeta = metaParamsInt[0];
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Block.m_MaxMeta = metaParamsInt[1];
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Block.m_MinNoiseMeta = metaParamsInt[2];
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Block.m_MaxNoiseMeta = metaParamsInt[3];
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block = block.substr(0, sqBrStart);
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}
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// No meta randomization for this block
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}
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auto BlockParams = StringSplitAndTrim(block, ",");
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if (BlockParams.size() < 2)
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{
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CONDWARNING(a_LogWarnings, "Block weight is required param \"%s\"!", BlockParams[0].c_str());
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return false;
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}
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BLOCKTYPE BlockType = static_cast<BLOCKTYPE>(BlockStringToType(BlockParams[0]));
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int BlockWeight = 0;
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if ((BlockType != E_BLOCK_AIR) && !NoCaseCompare(BlockParams[0], "Air"))
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{
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// Failed to parse block type
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CONDWARNING(
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a_LogWarnings, "Cannot parse block type from string \"%s\"!",
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BlockParams[0].c_str());
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return false;
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}
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if (!StringToInteger(BlockParams[1], BlockWeight))
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{
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// Failed to parse the crop weight:
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CONDWARNING(
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a_LogWarnings,
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"Cannot parse block weight from string \"%s\"!",
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BlockParams[1].c_str());
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return false;
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}
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Block.m_Type = BlockType;
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Block.m_Weight = BlockWeight;
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m_AllWeights += BlockWeight;
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m_BlocksToRandomize.push_back(Block);
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}
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if (m_BlocksToRandomize.size() == 0)
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{
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CONDWARNING(a_LogWarnings, "You must specify at least one block to randomize%s!", "");
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return false;
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}
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return true;
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}
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bool ParseMeta(const AString & a_Meta, std::array<int, 4> & a_ParsedMeta, bool a_LogWarnings)
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{
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auto MetaParams = StringSplitAndTrim(a_Meta, ",");
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for (size_t i = 0; i < MetaParams.size(); i++)
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{
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int Value;
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if (!StringToInteger(MetaParams[i], Value))
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{
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// Failed to parse meta parameter from string:
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CONDWARNING(a_LogWarnings, "Cannot parse meta param from string \"%s\", meta: %s!", MetaParams[i].c_str(), a_Meta.c_str());
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return false;
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}
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if (i > 3)
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{
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CONDWARNING(a_LogWarnings, "Unsupported meta param \"%d\"!", Value);
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return false;
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}
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a_ParsedMeta[i] = Value;
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}
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if (MetaParams.size() == 1)
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{
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// Noise is not used for meta
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a_ParsedMeta[1] = a_ParsedMeta[0];
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}
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else if (MetaParams.size() == 2)
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{
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// Noise range is same as meta range
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a_ParsedMeta[2] = a_ParsedMeta[0];
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a_ParsedMeta[3] = a_ParsedMeta[1];
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}
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else if (MetaParams.size() == 3)
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{
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a_ParsedMeta[3] = a_ParsedMeta[1];
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}
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return true;
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}
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virtual void Modify(cBlockArea & a_Image, const Vector3i a_PiecePos, const int a_PieceRot) override
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{
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cNoise Noise(m_Seed);
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cNoise PieceNoise(Noise.IntNoise3DInt(a_PiecePos));
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size_t NumBlocks = a_Image.GetBlockCount();
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BLOCKTYPE * BlockTypes = a_Image.GetBlockTypes();
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BLOCKTYPE * BlockMetas = a_Image.GetBlockMetas();
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for (size_t i = 0; i < NumBlocks; i++)
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{
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if (m_BlocksToReplace.count(BlockTypes[i]))
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{
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float BlockRnd = PieceNoise.IntNoise2DInRange(a_PieceRot, static_cast<int>(i), 0, m_AllWeights);
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int weightDelta = 0;
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for (auto & blockToRnd : m_BlocksToRandomize)
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{
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weightDelta += blockToRnd.m_Weight;
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if (BlockRnd <= weightDelta)
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{
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BlockTypes[i] = blockToRnd.m_Type;
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// Per block meta params
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if (blockToRnd.m_MinMeta < blockToRnd.m_MaxMeta)
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{
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int BlockMetaRnd = std::clamp(static_cast<int>(PieceNoise.IntNoise2DInRange(a_PieceRot*2, static_cast<int>(i), blockToRnd.m_MinNoiseMeta, blockToRnd.m_MaxNoiseMeta)), blockToRnd.m_MinMeta, blockToRnd.m_MaxMeta);
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BlockMetas[i] = static_cast<NIBBLETYPE>(BlockMetaRnd);
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}
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else if ((blockToRnd.m_MaxMeta > -1) && (blockToRnd.m_MaxMeta == blockToRnd.m_MinMeta))
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{
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// Change meta if at least minimum meta was specified
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BlockMetas[i] = static_cast<NIBBLETYPE>(blockToRnd.m_MaxMeta);
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}
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break;
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}
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}
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// All blocks meta params
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if (m_MaxMeta > m_MinMeta)
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{
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int BlockMetaRnd = std::clamp(static_cast<int>(PieceNoise.IntNoise2DInRange(a_PieceRot*2, static_cast<int>(i), m_MinNoiseMeta, m_MaxNoiseMeta)), m_MinMeta, m_MaxMeta);
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BlockMetas[i] = static_cast<NIBBLETYPE>(BlockMetaRnd);
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}
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else if ((m_MaxMeta > -1) && (m_MaxMeta == m_MinMeta))
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{
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// Change meta if at least minimum meta was specified
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BlockMetas[i] = static_cast<NIBBLETYPE>(m_MaxMeta);
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}
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}
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} // for i - BlockTypes[]
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}
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virtual void AssignSeed(int a_Seed) override
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{
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m_Seed = a_Seed + SEED_OFFSET;
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}
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protected:
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int m_Seed;
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int m_AllWeights = 0;
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/** Block types of a blocks which are being replaced by this strategy */
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std::map<BLOCKTYPE, int> m_BlocksToReplace;
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/** Randomized blocks with their weights and meta params */
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cRandomizedBlocks m_BlocksToRandomize;
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/** Minimum meta to randomize */
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int m_MinMeta = 0;
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/** Maximum meta to randomize */
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int m_MaxMeta = -1;
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/** Maximum meta in noise range */
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int m_MaxNoiseMeta = 0;
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/** Minimum meta in noise range */
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int m_MinNoiseMeta = 0;
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};
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////////////////////////////////////////////////////////////////////////////////
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// CreatePieceModifierFromString:
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bool CreatePieceModifierFromString(const AString & a_Definition, std::shared_ptr<cPiece::cPieceModifiers> & a_Modifiers, bool a_LogWarnings)
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{
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auto idxCurlyStart = a_Definition.find('{');
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auto idxCurlyFirstEnd = a_Definition.find('}');
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if ((idxCurlyStart == AString::npos) && (idxCurlyFirstEnd == AString::npos))
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{
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CONDWARNING(a_LogWarnings, "Piece metadata \"Modifiers\" needs at least one valid modifier definition \"%s\"!", a_Definition.c_str());
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return false;
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}
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auto modifiersStr = StringSplitAndTrim(a_Definition, "{");
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for (size_t i = 0; i < modifiersStr.size(); i++)
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{
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AString modifierStr = TrimString(modifiersStr[i]);
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if (modifierStr.size() == 0)
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{
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continue;
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}
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auto idxCurlyEnd = modifierStr.find('}');
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if (idxCurlyEnd == AString::npos)
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{
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CONDWARNING(a_LogWarnings, "Modifier definition must end with curly bracket \"%s\"!!", modifierStr.c_str());
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return false;
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}
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modifierStr = modifierStr.substr(0, idxCurlyEnd);
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// Break apart the modifier class, the first parameter before the first pipe char:
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auto idxPipe = modifierStr.find('|');
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if (idxPipe == AString::npos)
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{
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idxPipe = modifierStr.length();
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}
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AString ModifierClass = modifierStr.substr(0, idxPipe);
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// Create a modifier class based on the class string:
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cPiece::cPieceModifierPtr Modifier;
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if (NoCaseCompare(ModifierClass, "RandomizeBlocks") == 0)
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{
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Modifier = std::make_shared<cPieceModifierRandomizeBlocks>();
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}
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if (Modifier == nullptr)
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{
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CONDWARNING(a_LogWarnings, "Unknown modifier class \"%s\" %s!", ModifierClass.c_str(), modifierStr.c_str());
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return false;
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}
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// Initialize the modifier's parameters:
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AString Params;
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if (idxPipe < modifierStr.length())
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{
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Params = modifierStr.substr(idxPipe + 1);
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}
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if (!Modifier->InitializeFromString(Params, a_LogWarnings))
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{
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CONDWARNING(a_LogWarnings, "InitializeFromString error \"%s\" -- %!", Params.c_str(), modifierStr.c_str());
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return false;
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}
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a_Modifiers->push_back(Modifier);
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}
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return true;
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}
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