mirror of https://github.com/AxioDL/metaforce.git
403 lines
12 KiB
C++
403 lines
12 KiB
C++
#include "AROTBuilder.hpp"
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namespace DataSpec
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{
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logvisor::Module Log("AROTBuilder");
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#define AROT_MAX_LEVEL 7
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static const uint32_t AROTChildCounts[] = { 0, 2, 2, 4, 2, 4, 4, 8 };
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size_t AROTBuilder::BitmapPool::addIndices(const std::set<int>& indices)
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{
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for (size_t i=0 ; i<m_pool.size() ; ++i)
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if (m_pool[i] == indices)
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return i;
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m_pool.push_back(indices);
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return m_pool.size() - 1;
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}
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bool AROTBuilder::Node::addChild(int level, const zeus::CAABox& curAabb, const zeus::CAABox& childAabb, int idx)
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{
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if (childAabb.intersects(curAabb))
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{
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childIndices.insert(idx);
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if (!curAabb.inside(childAabb) && level < AROT_MAX_LEVEL)
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{
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childNodes.resize(8);
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zeus::CAABox X[2];
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curAabb.splitX(X[0], X[1]);
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bool inX[2] = {};
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for (int i=0 ; i<2 ; ++i)
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{
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zeus::CAABox Y[2];
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X[i].splitY(Y[0], Y[1]);
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bool inY[2] = {};
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for (int j=0 ; j<2 ; ++j)
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{
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zeus::CAABox Z[2];
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Y[j].splitZ(Z[0], Z[1]);
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bool inZ[2] = {};
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inZ[0] = childNodes[i*4 + j*2].addChild(level + 1, Z[0], childAabb, idx);
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inZ[1] = childNodes[i*4 + j*2 + 1].addChild(level + 1, Z[1], childAabb, idx);
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if (inZ[0] ^ inZ[1])
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flags |= 0x4;
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if (inZ[0] | inZ[1])
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inY[j] = true;
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}
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if (inY[0] ^ inY[1])
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flags |= 0x2;
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if (inY[0] | inY[1])
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inX[i] = true;
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}
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if (inX[0] ^ inX[1])
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flags |= 0x1;
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if (!flags)
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childNodes.clear();
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}
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return true;
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}
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return false;
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}
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void AROTBuilder::Node::nodeCount(size_t& sz, size_t& idxRefs, BitmapPool& bmpPool, size_t& curOff)
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{
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if (childIndices.size())
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{
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sz += 1;
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poolIdx = bmpPool.addIndices(childIndices);
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if (poolIdx > 65535)
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Log.report(logvisor::Fatal, "AROT bitmap exceeds 16-bit node addressing; area too complex");
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uint32_t childCount = AROTChildCounts[flags];
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nodeOff = curOff;
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nodeSz = childCount * 2 + 4;
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curOff += nodeSz;
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if (childNodes.size())
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{
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for (int i=0 ; i < 1 + ((flags & 0x1) != 0) ; ++i)
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{
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for (int j=0 ; j < 1 + ((flags & 0x2) != 0) ; ++j)
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{
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for (int k=0 ; k < 1 + ((flags & 0x4) != 0) ; ++k)
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{
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childNodes[i*4 + j*2 + k].nodeCount(sz, idxRefs, bmpPool, curOff);
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}
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}
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}
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idxRefs += childCount;
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}
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}
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}
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void AROTBuilder::Node::writeIndirectionTable(athena::io::MemoryWriter& w)
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{
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if (childIndices.size())
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{
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w.writeUint32Big(nodeOff);
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if (childNodes.size())
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{
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for (int i=0 ; i < 1 + ((flags & 0x1) != 0) ; ++i)
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{
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for (int j=0 ; j < 1 + ((flags & 0x2) != 0) ; ++j)
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{
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for (int k=0 ; k < 1 + ((flags & 0x4) != 0) ; ++k)
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{
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childNodes[i*4 + j*2 + k].writeIndirectionTable(w);
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}
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}
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}
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}
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}
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}
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void AROTBuilder::Node::writeNodes(athena::io::MemoryWriter& w, int nodeIdx)
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{
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if (childIndices.size())
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{
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w.writeUint16Big(poolIdx);
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w.writeUint16Big(flags);
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if (childNodes.size())
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{
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int curIdx = nodeIdx + 1;
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if (curIdx > 65535)
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Log.report(logvisor::Fatal, "AROT node exceeds 16-bit node addressing; area too complex");
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int childIndices[8];
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for (int i=0 ; i < 1 + ((flags & 0x1) != 0) ; ++i)
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{
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for (int j=0 ; j < 1 + ((flags & 0x2) != 0) ; ++j)
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{
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for (int k=0 ; k < 1 + ((flags & 0x4) != 0) ; ++k)
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{
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int ch = i*4 + j*2 + k;
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w.writeUint16Big(curIdx);
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childIndices[ch] = curIdx;
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childNodes[ch].advanceIndex(curIdx);
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}
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}
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}
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for (int i=0 ; i < 1 + ((flags & 0x1) != 0) ; ++i)
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{
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for (int j=0 ; j < 1 + ((flags & 0x2) != 0) ; ++j)
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{
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for (int k=0 ; k < 1 + ((flags & 0x4) != 0) ; ++k)
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{
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int ch = i*4 + j*2 + k;
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childNodes[ch].writeNodes(w, childIndices[ch]);
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}
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}
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}
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}
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}
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}
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void AROTBuilder::Node::advanceIndex(int& nodeIdx)
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{
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if (childIndices.size())
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{
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++nodeIdx;
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if (childNodes.size())
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{
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for (int i=0 ; i < 1 + ((flags & 0x1) != 0) ; ++i)
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{
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for (int j=0 ; j < 1 + ((flags & 0x2) != 0) ; ++j)
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{
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for (int k=0 ; k < 1 + ((flags & 0x4) != 0) ; ++k)
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{
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childNodes[i*4 + j*2 + k].advanceIndex(nodeIdx);
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}
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}
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}
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}
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}
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}
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void AROTBuilder::Node::colSize(size_t& totalSz)
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{
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if (childIndices.size())
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{
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nodeOff = totalSz;
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if (childNodes.empty())
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{
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totalSz += 26 + childIndices.size() * 2;
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}
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else
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{
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totalSz += 36;
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for (int i=0 ; i < 1 + ((flags & 0x1) != 0) ; ++i)
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{
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for (int j=0 ; j < 1 + ((flags & 0x2) != 0) ; ++j)
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{
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for (int k=0 ; k < 1 + ((flags & 0x4) != 0) ; ++k)
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{
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childNodes[i*4 + j*2 + k].colSize(totalSz);
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}
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}
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}
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}
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}
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}
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void AROTBuilder::Node::writeColNodes(uint8_t*& ptr, const zeus::CAABox& curAABB)
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{
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if (childIndices.size())
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{
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if (childNodes.empty())
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{
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float* aabbOut = reinterpret_cast<float*>(ptr);
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aabbOut[0] = hecl::SBig(curAABB.min[0]);
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aabbOut[1] = hecl::SBig(curAABB.min[1]);
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aabbOut[2] = hecl::SBig(curAABB.min[2]);
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aabbOut[3] = hecl::SBig(curAABB.max[0]);
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aabbOut[4] = hecl::SBig(curAABB.max[1]);
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aabbOut[5] = hecl::SBig(curAABB.max[2]);
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athena::io::MemoryWriter w(ptr + 24, INT32_MAX);
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w.writeUint16Big(childIndices.size());
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for (int idx : childIndices)
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w.writeUint16Big(idx);
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ptr += 26 + childIndices.size() * 2;
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}
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else
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{
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uint16_t* pflags = reinterpret_cast<uint16_t*>(ptr);
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uint32_t* offsets = reinterpret_cast<uint32_t*>(ptr + 4);
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memset(pflags, 0, sizeof(uint32_t) * 9);
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for (int i=0 ; i < 1 + ((flags & 0x1) != 0) ; ++i)
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{
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for (int j=0 ; j < 1 + ((flags & 0x2) != 0) ; ++j)
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{
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for (int k=0 ; k < 1 + ((flags & 0x4) != 0) ; ++k)
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{
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int idx = i*4 + j*2 + k;
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uint32_t thisOffset;
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uint16_t thisFlags = childNodes[idx].getColRef(thisOffset);
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if (thisFlags)
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{
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*pflags |= thisFlags << (idx * 2);
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offsets[idx] = hecl::SBig(uint32_t(thisOffset - nodeOff - 36));
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}
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}
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}
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}
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*pflags = hecl::SBig(*pflags);
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ptr += 36;
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zeus::CAABox X[2];
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if (flags & 0x1)
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curAABB.splitX(X[0], X[1]);
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else
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{
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X[0] = curAABB;
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X[1] = curAABB;
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}
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for (int i=0 ; i < 1 + ((flags & 0x1) != 0) ; ++i)
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{
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zeus::CAABox Y[2];
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if (flags & 0x2)
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X[i].splitY(Y[0], Y[1]);
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else
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{
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Y[0] = X[i];
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Y[1] = X[i];
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}
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for (int j=0 ; j < 1 + ((flags & 0x2) != 0) ; ++j)
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{
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zeus::CAABox Z[2];
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if (flags & 0x4)
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Y[j].splitZ(Z[0], Z[1]);
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else
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{
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Z[0] = Y[j];
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Z[1] = Y[j];
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}
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for (int k=0 ; k < 1 + ((flags & 0x4) != 0) ; ++k)
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{
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int idx = i*4 + j*2 + k;
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childNodes[idx].writeColNodes(ptr, Z[k]);
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}
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}
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}
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}
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}
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}
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uint16_t AROTBuilder::Node::getColRef(uint32_t& offset)
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{
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if (childIndices.size())
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{
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offset = nodeOff;
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if (childNodes.empty())
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return 2;
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else
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return 1;
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}
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return 0;
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}
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void AROTBuilder::build(std::vector<std::vector<uint8_t>>& secs, const zeus::CAABox& fullAabb,
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const std::vector<zeus::CAABox>& meshAabbs, const std::vector<DNACMDL::Mesh>& meshes)
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{
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for (int i=0 ; i<meshAabbs.size() ; ++i)
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{
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const zeus::CAABox& aabb = meshAabbs[i];
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rootNode.addChild(0, fullAabb, aabb, i);
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}
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size_t totalNodeCount = 0;
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size_t idxRefCount = 0;
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size_t curOff = 0;
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rootNode.nodeCount(totalNodeCount, idxRefCount, bmpPool, curOff);
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size_t bmpWordCount = ROUND_UP_32(meshes.size()) / 32;
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size_t arotSz = 64 + bmpWordCount * bmpPool.m_pool.size() * 4 + totalNodeCount * 8 + idxRefCount * 2;
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secs.emplace_back(arotSz, 0);
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athena::io::MemoryWriter w(secs.back().data(), secs.back().size());
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w.writeUint32Big('AROT');
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w.writeUint32Big(1);
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w.writeUint32Big(bmpPool.m_pool.size());
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w.writeUint32Big(meshes.size());
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w.writeUint32Big(totalNodeCount);
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w.writeVec3fBig(fullAabb.min);
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w.writeVec3fBig(fullAabb.max);
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w.seekAlign32();
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std::vector<uint32_t> bmpWords;
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bmpWords.reserve(bmpWordCount);
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for (const std::set<int>& bmp : bmpPool.m_pool)
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{
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bmpWords.clear();
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bmpWords.resize(bmpWordCount);
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auto bmpIt = bmp.cbegin();
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if (bmpIt != bmp.cend())
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{
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int curIdx = 0;
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for (int w=0 ; w<bmpWordCount ; ++w)
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{
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for (int b=0 ; b<32 ; ++b)
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{
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if (*bmpIt == curIdx)
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{
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bmpWords[w] |= 1 << b;
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++bmpIt;
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if (bmpIt == bmp.cend())
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break;
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}
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++curIdx;
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}
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if (bmpIt == bmp.cend())
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break;
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}
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}
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for (uint32_t word : bmpWords)
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w.writeUint32Big(word);
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}
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rootNode.writeIndirectionTable(w);
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rootNode.writeNodes(w, 0);
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}
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std::pair<std::unique_ptr<uint8_t[]>, uint32_t> AROTBuilder::buildCol(const ColMesh& mesh, BspNodeType& rootOut)
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{
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zeus::CAABox fullAabb;
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for (const auto& vert : mesh.verts)
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fullAabb.accumulateBounds(zeus::CVector3f(vert));
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int t = 0;
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for (const ColMesh::Triangle& tri : mesh.trianges)
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{
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zeus::CAABox aabb;
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for (int e=0 ; e<3 ; ++e)
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{
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const ColMesh::Edge& edge = mesh.edges[tri.edges[e]];
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for (int v=0 ; v<2 ; ++v)
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{
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const auto& vert = mesh.verts[edge.verts[v]];
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aabb.accumulateBounds(zeus::CVector3f(vert));
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}
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}
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rootNode.addChild(0, fullAabb, aabb, t);
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++t;
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}
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size_t totalSize = 0;
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rootNode.colSize(totalSize);
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std::unique_ptr<uint8_t[]> ret(new uint8_t[totalSize]);
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uint32_t dummy;
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rootOut = BspNodeType(rootNode.getColRef(dummy));
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uint8_t* ptr = ret.get();
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rootNode.writeColNodes(ptr, fullAabb);
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return {std::move(ret), totalSize};
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}
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}
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