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126 lines
3.0 KiB
C++
126 lines
3.0 KiB
C++
/********************************************************************
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Minecraft: Pocket Edition - Decompilation Project
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Copyright (C) 2023 iProgramInCpp
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The following code is licensed under the BSD 1 clause license.
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SPDX-License-Identifier: BSD-1-Clause
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********************************************************************/
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#include "BiomeSource.hpp"
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#include "world/level/Level.hpp"
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BiomeSource::BiomeSource()
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{
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field_20 = new Biome*[256];
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}
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BiomeSource::BiomeSource(Level* pLevel) :
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m_Random1(pLevel->getSeed() * 9871),
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m_Random2(pLevel->getSeed() * 39811),
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m_Random3(pLevel->getSeed() * 543321)
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{
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m_pPerlinNoise[0] = new PerlinNoise(&m_Random1, 4);
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m_pPerlinNoise[1] = new PerlinNoise(&m_Random2, 4);
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m_pPerlinNoise[2] = new PerlinNoise(&m_Random3, 2);
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field_20 = new Biome*[256];
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field_4 = new float[256];
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}
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Biome* BiomeSource::getBiome(ChunkPos& pos)
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{
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// @BUG: Shifting right by 4 instead of left. In Java Edition, a shift left by 4 is performed instead.
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return getBiome(pos.x >> 4, pos.z >> 4);
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}
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Biome* BiomeSource::getBiome(int a, int b)
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{
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return *getBiomeBlock(a, b, 1, 1);
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}
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Biome** BiomeSource::getBiomeBlock(int a, int b, int c, int d)
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{
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return getBiomeBlock(field_20, a, b, c, d);
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}
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Biome** BiomeSource::getBiomeBlock(Biome** pBiomes, int a, int b, int c, int d)
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{
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field_4 = m_pPerlinNoise[0]->getRegion(field_4, a, b, c, c, 0.025f, 0.025f, 0.25f);
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field_8 = m_pPerlinNoise[1]->getRegion(field_8, a, b, c, c, 0.05f, 0.05f, 0.3333f);
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field_C = m_pPerlinNoise[2]->getRegion(field_C, a, b, c, c, 0.25f, 0.25f, 0.588f);
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int index = 0;
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for (int i = 0; i < c; i++)
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{
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for (int j = 0; j < d; j++)
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{
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float d = field_C[index] * 1.1f + 0.5f;
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float d1 = 0.01f;
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float d2 = 1.0f - d1;
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float d3 = (field_4[index] * 0.15f + 0.7f) * d2 + d * d1;
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d1 = 0.002f;
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d2 = 1.0f - d1;
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float d4 = (field_8[index] * 0.15f + 0.5f) * d2 + d * d1;
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d3 = 1.0f - (1.0f - d3) * (1.0f - d3);
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if (d3 < 0.0f) d3 = 0.0f;
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if (d4 < 0.0f) d4 = 0.0f;
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if (d3 > 1.0f) d3 = 1.0f;
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if (d4 > 1.0f) d4 = 1.0f;
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field_4[index] = d3;
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field_8[index] = d4;
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field_20[index++] = Biome::getBiome(d3, d4);
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}
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}
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return field_20;
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}
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float* BiomeSource::getTemperatureBlock(int a, int b, int c, int d)
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{
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field_4 = m_pPerlinNoise[0]->getRegion(field_4, a, b, c, d, 0.025f, 0.025f, 0.25f);
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field_C = m_pPerlinNoise[2]->getRegion(field_C, a, b, c, d, 0.25f, 0.25f, 0.588f);
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int index = 0;
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for (int i = 0; i < c; i++)
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{
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for (int j = 0; j < d; j++)
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{
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float d = field_C[index] * 1.1f + 0.5f;
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float d1 = 0.01f;
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float d2 = 1.0f - d1;
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float d3 = (field_4[index] * 0.15f + 0.7f) * d2 + d * d1;
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d3 = 1.0f - (1.0f - d3) * (1.0f - d3);
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if (d3 < 0.0f)
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d3 = 0.0f;
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if (d3 > 1.0f)
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d3 = 1.0f;
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field_4[index++] = d3;
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}
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}
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return field_4;
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}
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BiomeSource::~BiomeSource()
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{
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for (int i = 0; i < 3; i++)
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if (m_pPerlinNoise[i])
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delete m_pPerlinNoise[i];
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if (field_4)
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delete[] field_4;
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if (field_8)
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delete[] field_8;
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if (field_C)
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delete[] field_C;
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if (field_20)
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delete[] field_20;
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}
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