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22dc383f63
Applies review comments getWorldspaceTerrain => returns a reference because never null crashfix in navigator updateLandPositions fixes naming of it const ESM4::Land* MWWorld::Store<ESM4::Land>::search(ESM::ExteriorCellLocation cellLocation) const removes useless else ExteriorCellLocation uses default initializers get terrain height returns -MAX_FLOAT when there is no esm4 terrain. applied review comments use default initlializer when possible factorise code uses pattern matching in for loop.
119 lines
3.1 KiB
C++
119 lines
3.1 KiB
C++
#ifndef OPENMW_ESM_UTIL_H
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#define OPENMW_ESM_UTIL_H
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#include <cmath>
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#include <osg/Quat>
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#include <osg/Vec2>
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#include <osg/Vec2i>
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#include <osg/Vec3f>
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#include <components/esm/refid.hpp>
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#include <components/esm3/loadcell.hpp>
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#include <components/misc/constants.hpp>
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namespace ESM
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{
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// format 0, savegames only
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struct Quaternion
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{
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float mValues[4];
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Quaternion() = default;
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Quaternion(const osg::Quat& q)
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{
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mValues[0] = q.w();
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mValues[1] = q.x();
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mValues[2] = q.y();
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mValues[3] = q.z();
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}
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operator osg::Quat() const { return osg::Quat(mValues[1], mValues[2], mValues[3], mValues[0]); }
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};
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struct Vector3
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{
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float mValues[3];
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Vector3() = default;
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Vector3(const osg::Vec3f& v)
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{
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mValues[0] = v.x();
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mValues[1] = v.y();
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mValues[2] = v.z();
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}
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operator osg::Vec3f() const { return osg::Vec3f(mValues[0], mValues[1], mValues[2]); }
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};
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struct ExteriorCellLocation
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{
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int mX = 0;
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int mY = 0;
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ESM::RefId mWorldspace = ESM::Cell::sDefaultWorldspaceId;
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ExteriorCellLocation() = default;
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ExteriorCellLocation(int x, int y, ESM::RefId worldspace)
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: mX(x)
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, mY(y)
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, mWorldspace(worldspace)
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{
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}
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bool operator==(const ExteriorCellLocation& other) const
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{
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return mX == other.mX && mY == other.mY && mWorldspace == other.mWorldspace;
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}
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bool operator<(const ExteriorCellLocation& other) const
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{
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return std::make_tuple(mX, mY, mWorldspace) < std::make_tuple(other.mX, other.mY, other.mWorldspace);
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}
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};
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inline bool isEsm4Ext(ESM::RefId worldspaceId)
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{
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return worldspaceId != ESM::Cell::sDefaultWorldspaceId;
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}
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inline int getCellSize(ESM::RefId worldspaceId)
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{
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return isEsm4Ext(worldspaceId) ? Constants::ESM4CellSizeInUnits : Constants::CellSizeInUnits;
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}
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// Vertex count of a side of a land record
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int getLandSize(ESM::RefId worldspaceId);
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inline ESM::ExteriorCellLocation positionToExteriorCellLocation(
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float x, float y, ESM::RefId worldspaceId = ESM::Cell::sDefaultWorldspaceId)
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{
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const float cellSize = getCellSize(worldspaceId);
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return { static_cast<int>(std::floor(x / cellSize)), static_cast<int>(std::floor(y / cellSize)), worldspaceId };
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}
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osg::Vec2 indexToPosition(const ESM::ExteriorCellLocation& cellIndex, bool centre = false);
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///< Convert cell numbers to position.
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}
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namespace std
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{
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template <>
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struct hash<ESM::ExteriorCellLocation>
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{
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std::size_t operator()(const ESM::ExteriorCellLocation& toHash) const
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{
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// Compute individual hash values for first,
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// second and third and combine them using XOR
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// and bit shifting:
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return ((hash<int>()(toHash.mX) ^ (hash<int>()(toHash.mY) << 1)) >> 1)
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^ (hash<ESM::RefId>()(toHash.mWorldspace) << 1);
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}
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};
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}
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#endif
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