mirror of https://github.com/AxioDL/metaforce.git
246 lines
8.1 KiB
C++
246 lines
8.1 KiB
C++
#include "Runtime/Collision/COBBTree.hpp"
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#include <array>
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#include "Runtime/Collision/CCollidableOBBTreeGroup.hpp"
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namespace metaforce {
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namespace {
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constexpr std::array<u8, 18> 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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constexpr std::array<u8, 12> 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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constexpr std::array<CCollisionEdge, 18> DefaultEdges{{
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{4, 1},
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{1, 5},
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{5, 4},
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{4, 0},
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{0, 1},
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{7, 2},
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{2, 6},
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{6, 7},
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{7, 3},
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{3, 2},
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{6, 0},
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{4, 6},
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{2, 0},
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{5, 3},
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{7, 5},
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{1, 3},
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{6, 5},
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{0, 3},
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}};
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constexpr std::array<u16, 36> DefaultSurfaceIndices{
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0, 1, 2, 0, 3, 4, 5, 6, 7, 5, 8, 9, 10, 3, 11, 10, 6, 12,
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13, 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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/* This is exactly what retro did >.< */
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u32 verify_deaf_babe(CInputStream& in) { return in.ReadLong(); }
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/* This is exactly what retro did >.< */
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u32 verify_version(CInputStream& in) { return in.ReadLong(); }
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} // Anonymous namespace
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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.ReadLong())
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, x18_indexData(in)
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, x88_root(std::make_unique<CNode>(in)) {}
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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>(DefaultEdgeMaterials.cbegin(), DefaultEdgeMaterials.cend());
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idxData.x30_surfaceMaterials = std::vector<u8>(DefaultSurfaceMaterials.cbegin(), DefaultSurfaceMaterials.cend());
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idxData.x40_edges = std::vector<CCollisionEdge>(DefaultEdges.cbegin(), DefaultEdges.cend());
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idxData.x50_surfaceIndices = std::vector<u16>(DefaultSurfaceIndices.cbegin(), DefaultSurfaceIndices.cend());
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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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}
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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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}
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ret->x88_root = std::make_unique<CNode>(zeus::CTransform::Translate(center), extent * 0.5f, nullptr, nullptr,
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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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const auto surfIdx = size_t{idx} * 3;
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const CCollisionEdge e0 = x18_indexData.x40_edges[x18_indexData.x50_surfaceIndices[surfIdx]];
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const CCollisionEdge e1 = x18_indexData.x40_edges[x18_indexData.x50_surfaceIndices[surfIdx + 1]];
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const u16 vert1 = e0.GetVertIndex1();
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const 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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}
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const 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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std::array<u16, 3> COBBTree::GetTriangleVertexIndices(u16 idx) const {
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const auto surfIdx = size_t{idx} * 3;
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const CCollisionEdge& e0 = x18_indexData.x40_edges[x18_indexData.x50_surfaceIndices[surfIdx]];
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const CCollisionEdge& e1 = x18_indexData.x40_edges[x18_indexData.x50_surfaceIndices[surfIdx + 1]];
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std::array<u16, 3> indices{};
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indices[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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const u32 material = x18_indexData.x0_materials[x18_indexData.x30_surfaceMaterials[idx]];
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if ((material & 0x2000000) != 0) {
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indices[0] = e0.GetVertIndex2();
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indices[1] = e0.GetVertIndex1();
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} else {
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indices[0] = e0.GetVertIndex1();
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indices[1] = e0.GetVertIndex2();
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}
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return indices;
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}
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CCollisionSurface COBBTree::GetTransformedSurface(u16 idx, const zeus::CTransform& xf) const {
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const auto surfIdx = size_t{idx} * 3;
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const CCollisionEdge e0 = x18_indexData.x40_edges[x18_indexData.x50_surfaceIndices[surfIdx]];
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const CCollisionEdge e1 = x18_indexData.x40_edges[x18_indexData.x50_surfaceIndices[surfIdx + 1]];
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const u16 vert1 = e0.GetVertIndex1();
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const 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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}
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const 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()); }
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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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}
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return zeus::CAABox();
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}
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COBBTree::SIndexData::SIndexData(CInputStream& in) {
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u32 count = in.ReadLong();
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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.emplace_back(in.ReadLong());
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}
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count = in.ReadLong();
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for (u32 i = 0; i < count; i++) {
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x10_vertMaterials.emplace_back(in.ReadUint8());
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}
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count = in.ReadLong();
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for (u32 i = 0; i < count; i++) {
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x20_edgeMaterials.emplace_back(in.ReadUint8());
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}
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count = in.ReadLong();
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for (u32 i = 0; i < count; i++) {
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x30_surfaceMaterials.emplace_back(in.ReadUint8());
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}
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count = in.ReadLong();
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for (u32 i = 0; i < count; i++) {
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x40_edges.emplace_back(in);
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}
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count = in.ReadLong();
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for (u32 i = 0; i < count; i++) {
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x50_surfaceIndices.emplace_back(in.ReadShort());
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}
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count = in.ReadLong();
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for (u32 i = 0; i < count; i++) {
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x60_vertices.emplace_back(in.Get<zeus::CVector3f>());
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}
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}
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COBBTree::CNode::CNode(const zeus::CTransform& xf, const zeus::CVector3f& point, std::unique_ptr<CNode>&& left,
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std::unique_ptr<CNode>&& right, std::unique_ptr<CLeafData>&& leaf)
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: x0_obb(xf, point)
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, x3c_isLeaf(leaf != nullptr)
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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 = in.Get<zeus::COBBox>();
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x3c_isLeaf = in.ReadBool();
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if (x3c_isLeaf)
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x48_leaf = std::make_unique<CLeafData>(in);
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else {
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x40_left = std::make_unique<CNode>(in);
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x44_right = std::make_unique<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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const 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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const u32 edgeCount = in.ReadLong();
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for (u32 i = 0; i < edgeCount; i++) {
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x0_surface.emplace_back(in.ReadShort());
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}
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}
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} // namespace metaforce
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