mirror of https://github.com/AxioDL/metaforce.git
208 lines
7.7 KiB
C++
208 lines
7.7 KiB
C++
#include "COBBTree.hpp"
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#include "CCollidableOBBTreeGroup.hpp"
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namespace urde {
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/* This is exactly what retro did >.< */
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u32 verify_deaf_babe(CInputStream& in) { return in.readUint32Big(); }
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/* This is exactly what retro did >.< */
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u32 verify_version(CInputStream& in) { return in.readUint32Big(); }
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COBBTree::COBBTree(CInputStream& in)
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: x0_magic(verify_deaf_babe(in))
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, x4_version(verify_version(in))
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, x8_memsize(in.readUint32())
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, x18_indexData(in)
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, x88_root(new CNode(in)) {}
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static const u8 DefaultEdgeMaterials[] = {
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2, 0, 0, 0, 0, 2, 0, 0, 0, 0, 2, 0, 0, 2, 0, 0, 2, 2
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};
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static const u8 DefaultSurfaceMaterials[] = {
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1
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};
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static const CCollisionEdge DefaultEdges[] = {
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{4, 1}, {1, 5}, {5, 4}, {4, 0}, {0, 1}, {7, 2}, {2, 6}, {6, 7}, {7, 3},
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{3, 2}, {6, 0}, {4, 6}, {2, 0}, {5, 3}, {7, 5}, {1, 3}, {6, 5}, {0, 3}
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};
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static const u16 DefaultSurfaceIndices[] = {
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0, 1, 2, 0, 3, 4, 5, 6, 7, 5, 8, 9, 10, 3, 11, 10, 6, 12, 13,
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8, 14, 13, 1, 15, 16, 14, 7, 16, 11, 2, 17, 15, 4, 17, 12, 9
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};
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std::unique_ptr<COBBTree> COBBTree::BuildOrientedBoundingBoxTree(const zeus::CVector3f& extent,
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const zeus::CVector3f& center) {
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zeus::CAABox aabb(extent * -0.5f + center, extent * 0.5f + center);
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std::unique_ptr<COBBTree> ret = std::make_unique<COBBTree>();
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COBBTree::SIndexData& idxData = ret->x18_indexData;
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idxData.x0_materials.reserve(3);
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idxData.x0_materials.push_back(0x40180000);
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idxData.x0_materials.push_back(0x42180000);
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idxData.x0_materials.push_back(0x41180000);
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idxData.x10_vertMaterials = std::vector<u8>(8, u8(0));
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idxData.x20_edgeMaterials = std::vector<u8>(std::begin(DefaultEdgeMaterials), std::end(DefaultEdgeMaterials));
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idxData.x30_surfaceMaterials = std::vector<u8>(std::begin(DefaultSurfaceMaterials), std::end(DefaultSurfaceMaterials));
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idxData.x40_edges = std::vector<CCollisionEdge>(std::begin(DefaultEdges), std::end(DefaultEdges));
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idxData.x50_surfaceIndices = std::vector<u16>(std::begin(DefaultSurfaceIndices), std::end(DefaultSurfaceIndices));
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idxData.x60_vertices.reserve(8);
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for (int i = 0; i < 8; ++i)
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idxData.x60_vertices.push_back(aabb.getPoint(i));
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std::vector<u16> surface;
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surface.reserve(12);
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for (int i = 0; i < 12; ++i)
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surface.push_back(i);
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ret->x88_root = std::make_unique<CNode>(zeus::CTransform::Translate(center), extent * 0.5f,
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std::unique_ptr<CNode>{}, std::unique_ptr<CNode>{}, std::make_unique<CLeafData>(std::move(surface)));
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return ret;
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}
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CCollisionSurface COBBTree::GetSurface(u16 idx) const {
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int surfIdx = idx * 3;
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CCollisionEdge e0 = x18_indexData.x40_edges[x18_indexData.x50_surfaceIndices[surfIdx]];
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CCollisionEdge e1 = x18_indexData.x40_edges[x18_indexData.x50_surfaceIndices[surfIdx + 1]];
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u16 vert1 = e0.GetVertIndex1();
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u16 vert2 = e0.GetVertIndex2();
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u16 vert3 = e1.GetVertIndex1();
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if (vert3 == vert1 || vert3 == vert2)
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vert3 = e1.GetVertIndex2();
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u32 mat = x18_indexData.x0_materials[x18_indexData.x30_surfaceMaterials[idx]];
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if ((mat & 0x2000000) != 0) {
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return CCollisionSurface(x18_indexData.x60_vertices[vert2], x18_indexData.x60_vertices[vert1],
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x18_indexData.x60_vertices[vert3], mat);
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}
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return CCollisionSurface(x18_indexData.x60_vertices[vert1], x18_indexData.x60_vertices[vert2],
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x18_indexData.x60_vertices[vert3], mat);
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}
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void COBBTree::GetTriangleVertexIndices(u16 idx, u16 indicesOut[3]) const {
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const CCollisionEdge& e0 = x18_indexData.x40_edges[x18_indexData.x50_surfaceIndices[idx * 3]];
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const CCollisionEdge& e1 = x18_indexData.x40_edges[x18_indexData.x50_surfaceIndices[idx * 3 + 1]];
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indicesOut[2] = (e1.GetVertIndex1() != e0.GetVertIndex1() && e1.GetVertIndex1() != e0.GetVertIndex2())
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? e1.GetVertIndex1()
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: e1.GetVertIndex2();
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u32 material = x18_indexData.x0_materials[x18_indexData.x30_surfaceMaterials[idx]];
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if (material & 0x2000000) {
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indicesOut[0] = e0.GetVertIndex2();
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indicesOut[1] = e0.GetVertIndex1();
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} else {
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indicesOut[0] = e0.GetVertIndex1();
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indicesOut[1] = e0.GetVertIndex2();
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}
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}
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CCollisionSurface COBBTree::GetTransformedSurface(u16 idx, const zeus::CTransform& xf) const {
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int surfIdx = idx * 3;
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CCollisionEdge e0 = x18_indexData.x40_edges[x18_indexData.x50_surfaceIndices[surfIdx]];
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CCollisionEdge e1 = x18_indexData.x40_edges[x18_indexData.x50_surfaceIndices[surfIdx + 1]];
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u16 vert1 = e0.GetVertIndex1();
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u16 vert2 = e0.GetVertIndex2();
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u16 vert3 = e1.GetVertIndex1();
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if (vert3 == vert1 || vert3 == vert2)
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vert3 = e1.GetVertIndex2();
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u32 mat = x18_indexData.x0_materials[x18_indexData.x30_surfaceMaterials[idx]];
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if ((mat & 0x2000000) != 0) {
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return CCollisionSurface(xf * x18_indexData.x60_vertices[vert2], xf * x18_indexData.x60_vertices[vert1],
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xf * x18_indexData.x60_vertices[vert3], mat);
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}
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return CCollisionSurface(xf * x18_indexData.x60_vertices[vert1], xf * x18_indexData.x60_vertices[vert2],
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xf * x18_indexData.x60_vertices[vert3], mat);
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}
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zeus::CAABox COBBTree::CalculateLocalAABox() const { return CalculateAABox(zeus::CTransform::Identity()); }
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zeus::CAABox COBBTree::CalculateAABox(const zeus::CTransform& xf) const {
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if (x88_root)
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return x88_root->GetOBB().calculateAABox(xf);
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return zeus::CAABox::skInvertedBox;
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}
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COBBTree::SIndexData::SIndexData(CInputStream& in) {
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u32 count = in.readUint32Big();
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x0_materials.reserve(count);
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for (u32 i = 0; i < count; i++)
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x0_materials.push_back(in.readUint32Big());
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count = in.readUint32Big();
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for (u32 i = 0; i < count; i++)
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x10_vertMaterials.push_back(in.readUByte());
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count = in.readUint32Big();
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for (u32 i = 0; i < count; i++)
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x20_edgeMaterials.push_back(in.readUByte());
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count = in.readUint32Big();
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for (u32 i = 0; i < count; i++)
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x30_surfaceMaterials.push_back(in.readUByte());
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count = in.readUint32Big();
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for (u32 i = 0; i < count; i++)
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x40_edges.push_back(in);
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count = in.readUint32Big();
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for (u32 i = 0; i < count; i++)
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x50_surfaceIndices.push_back(in.readUint16Big());
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count = in.readUint32Big();
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for (u32 i = 0; i < count; i++)
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x60_vertices.push_back(zeus::CVector3f::ReadBig(in));
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}
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COBBTree::CNode::CNode(const zeus::CTransform& xf, const zeus::CVector3f& point,
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std::unique_ptr<CNode>&& left, std::unique_ptr<CNode>&& right,
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std::unique_ptr<CLeafData>&& leaf)
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: x0_obb(xf, point)
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, x3c_isLeaf(leaf.operator bool())
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, x40_left(std::move(left))
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, x44_right(std::move(right))
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, x48_leaf(std::move(leaf)) {}
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COBBTree::CNode::CNode(CInputStream& in) {
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x0_obb = zeus::COBBox::ReadBig(in);
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x3c_isLeaf = in.readBool();
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if (x3c_isLeaf)
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x48_leaf.reset(new CLeafData(in));
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else {
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x40_left.reset(new CNode(in));
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x44_right.reset(new CNode(in));
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}
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}
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size_t COBBTree::CNode::GetMemoryUsage() const {
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size_t ret = 0;
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if (x3c_isLeaf)
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ret = x48_leaf->GetMemoryUsage() + /*sizeof(CNode)*/ 80;
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else {
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if (x40_left)
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ret = x40_left->GetMemoryUsage() + /*sizeof(CNode)*/ 80;
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if (x44_right)
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ret += x44_right->GetMemoryUsage();
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}
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return (ret + 3) & ~3;
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}
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COBBTree::CLeafData::CLeafData(std::vector<u16>&& surface) : x0_surface(std::move(surface)) {}
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const std::vector<u16>& COBBTree::CLeafData::GetSurfaceVector() const { return x0_surface; }
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size_t COBBTree::CLeafData::GetMemoryUsage() const {
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size_t ret = (x0_surface.size() * 2) + /*sizeof(CLeafData)*/ 16;
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return (ret + 3) & ~3;
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}
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COBBTree::CLeafData::CLeafData(CInputStream& in) {
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u32 edgeCount = in.readUint32Big();
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for (u32 i = 0; i < edgeCount; i++)
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x0_surface.push_back(in.readUint16Big());
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}
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} // namespace urde
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