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migrate ALMOST everything from source tree into client
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riall
GitHub
188
source/client/renderer/LightUpdate.cpp
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188
source/client/renderer/LightUpdate.cpp
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/********************************************************************
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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 "LightUpdate.hpp"
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#include "Level.hpp"
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void LightUpdate::update(Level* pLevel)
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{
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int newBr, oldBr, newBrN, x2, x6, x7, x14, x13, x10, v24, x21, x17_1, v27, x9, x10_1, x8, x7_1, x3, x4, x1, x20;
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int x19, x18, x17, x16, x5, x1_1;
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bool x11;
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if ((m_z2 - m_z1 + 1) * (m_x2 + 1 - m_x1 + (m_y2 - m_y1) * (m_x2 + 1 - m_x1)) > 32768)
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return;
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if (m_x2 < m_x1)
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return;
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x1 = m_x1 + 1;
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for (int i = m_x1 - 1; ; ++i)
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{
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x2 = x1 - 1;
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if (m_z2 < m_z1)
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{
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x1_1 = x1;
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goto LABEL_53;
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}
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x1_1 = x1;
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x3 = m_z1 + 1;
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x4 = m_z1 - 1;
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do
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{
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x6 = x3 - 1;
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if (!pLevel->hasChunksAt(x2, 0, x3 - 1, 1)
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|| pLevel->getChunk(x2 >> 4, x6 >> 4)->isEmpty())
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{
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x5 = x3;
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}
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else
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{
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if (m_y1 < 0) m_y1 = 0;
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if (m_y2 > 127) m_y2 = 127;
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if (m_y1 <= m_y2)
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{
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x7 = m_y1 + 1;
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x8 = m_y1 - 1;
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x5 = x3;
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while (1)
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{
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oldBr = pLevel->getBrightness(*this->m_lightLayer, x2, x7 - 1, x6);
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x13 = pLevel->getTile(x2, x7 - 1, x6);
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x14 = Tile::lightBlock[x13];
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if (!x14)
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x14 = 1;
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if (m_lightLayer == &LightLayer::Sky)
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break;
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if (m_lightLayer != &LightLayer::Block)
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goto LABEL_30;
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x10 = Tile::lightEmission[x13];
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x11 = x10 == 0;
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LABEL_31:
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if (x14 > 14)
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v24 = x11;
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else
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v24 = 0;
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if (!v24)
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{
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LABEL_35:
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x10_1 = x10;
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x16 = pLevel->getBrightness(*m_lightLayer, i, x7 - 1, x6);
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x17 = pLevel->getBrightness(*m_lightLayer, x1, x7 - 1, x6);
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x7_1 = x7;
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x18 = pLevel->getBrightness(*m_lightLayer, x2, x8, x6);
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x19 = pLevel->getBrightness(*m_lightLayer, x2, x7, x6);
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x20 = pLevel->getBrightness(*m_lightLayer, x2, x7 - 1, x4);
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x21 = pLevel->getBrightness(*m_lightLayer, x2, x7 - 1, x3);
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x17_1 = x17;
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if (x17 < x16)
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x17_1 = x16;
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if (x17_1 < x18)
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x17_1 = x18;
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if (x17_1 < x19)
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x17_1 = x19;
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if (x17_1 < x20)
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x17_1 = x20;
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if (x17_1 < x21)
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v27 = x21 - x14;
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else
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v27 = x17_1 - x14;
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newBr = v27;
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if (newBr < 0)
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newBr = 0;
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if (newBr < x10_1)
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newBr = x10_1;
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goto LABEL_18;
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}
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newBr = 0;
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x7_1 = x7;
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LABEL_18:
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if (newBr != oldBr)
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{
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pLevel->setBrightness(*m_lightLayer, x2, x7 - 1, x6, newBr);
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newBrN = newBr - 1;
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if (newBrN < 0)
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newBrN = 0;
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pLevel->updateLightIfOtherThan(*m_lightLayer, i, x7 - 1, x6, newBrN);
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pLevel->updateLightIfOtherThan(*m_lightLayer, x2, x8, x6, newBrN);
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pLevel->updateLightIfOtherThan(*m_lightLayer, x2, x7 - 1, x4, newBrN);
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if (m_x2 <= x1)
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pLevel->updateLightIfOtherThan(*m_lightLayer, x1, x7 - 1, x6, newBrN);
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if (m_y2 <= x7)
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pLevel->updateLightIfOtherThan(*m_lightLayer, x2, x7, x6, newBrN);
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if (m_z2 <= x3)
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pLevel->updateLightIfOtherThan(*m_lightLayer, x2, x7 - 1, x3, newBrN);
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}
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++x7;
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++x8;
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if (m_y2 < x7_1)
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goto LABEL_8;
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}
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x9 = pLevel->isSkyLit(x2, x7 - 1, x6);
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x10 = 15;
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if (x9)
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goto LABEL_35;
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LABEL_30:
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x11 = 1;
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x10 = 0;
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goto LABEL_31;
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}
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x5 = x3;
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}
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LABEL_8:
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m_z2 = this->m_z2;
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++x3;
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++x4;
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} while (x5 <= m_z2);
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m_x2 = this->m_x2;
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LABEL_53:
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++x1;
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if (x1_1 > m_x2)
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break;
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m_z1 = this->m_z1;
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}
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}
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bool LightUpdate::expandToContain(int x1, int y1, int z1, int x2, int y2, int z2)
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{
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if (m_x1 <= x1 &&
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m_y1 <= y1 &&
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m_z1 <= z1 &&
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m_x2 >= x2 &&
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m_y2 >= y2 &&
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m_z2 >= z2)
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return true;
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if (x1 < m_x1 - 1) return false;
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if (y1 < m_y1 - 1) return false;
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if (z1 < m_z1 - 1) return false;
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if (x2 > m_x2 + 1) return false;
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if (y2 > m_y2 + 1) return false;
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if (z2 > m_z2 + 1) return false;
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if (y1 >= m_y1) y1 = m_y1;
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if (x1 >= m_x1) x1 = m_x1;
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if (y2 < m_y2) y2 = m_y2;
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if (z1 >= m_z1) z1 = m_z1;
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if (x2 < m_x2) x2 = m_x2;
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if (z2 < m_z2) z2 = m_z2;
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// If trying to add more than 2 tiles, we can't do that
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if ((z2 - z1) * (x2 - x1) * (y2 - y1) - (m_z2 - m_z1) * (m_x2 - m_x1) * (m_y2 - m_y1) > 2)
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return false;
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m_x1 = x1;
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m_y1 = y1;
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m_x2 = x2;
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m_y2 = y2;
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m_z1 = z1;
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m_z2 = z2;
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return true;
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}
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