metaforce/Runtime/World/CPathFindSpline.cpp

73 lines
2.7 KiB
C++
Raw Normal View History

#include "CPathFindSearch.hpp"
namespace urde
{
bool CPathFindSearch::SegmentOver(const zeus::CVector3f& p1) const
{
if (x4_waypoints.size() > 1 && xc8_curWaypoint < x4_waypoints.size() - 1)
{
const zeus::CVector3f& wp0 = x4_waypoints[xc8_curWaypoint];
const zeus::CVector3f& wp1 = x4_waypoints[xc8_curWaypoint + 1];
const zeus::CVector3f& wp2 = x4_waypoints[std::min(u32(x4_waypoints.size()) - 1, xc8_curWaypoint + 2)];
return (p1 - wp1).dot(wp2 - wp0) >= 0.f;
}
return true;
}
void CPathFindSearch::GetSplinePoint(zeus::CVector3f& pOut, const zeus::CVector3f& p1, u32 wpIdx) const
{
if (x4_waypoints.size() > 1 && wpIdx < x4_waypoints.size() - 1)
{
zeus::CVector3f a = (wpIdx == 0) ? x4_waypoints[0] * 2.f - x4_waypoints[1] : x4_waypoints[wpIdx-1];
const zeus::CVector3f& b = x4_waypoints[wpIdx];
const zeus::CVector3f& c = x4_waypoints[wpIdx+1];
zeus::CVector3f d = (wpIdx + 2 >= x4_waypoints.size()) ?
x4_waypoints[x4_waypoints.size()-1] * 2.f - x4_waypoints[x4_waypoints.size()-2] : x4_waypoints[wpIdx+2];
zeus::CVector3f delta = c - b;
if (delta.isMagnitudeSafe())
pOut = zeus::getCatmullRomSplinePoint(a, b, c, d, (p1 - b).dot(delta) / delta.magSquared());
else
pOut = b;
}
}
void CPathFindSearch::GetSplinePoint(zeus::CVector3f& pOut, const zeus::CVector3f& p1) const
{
GetSplinePoint(pOut, p1, xc8_curWaypoint);
}
void CPathFindSearch::GetSplinePointWithLookahead(zeus::CVector3f& pOut, const zeus::CVector3f& p1,
u32 wpIdx, float lookahead) const
{
if (x4_waypoints.size() > 1 && wpIdx < x4_waypoints.size() - 1)
{
const zeus::CVector3f& wp0 = x4_waypoints[wpIdx];
const zeus::CVector3f& wp1 = x4_waypoints[wpIdx+1];
zeus::CVector3f delta = wp1 - wp0;
if (delta.isMagnitudeSafe())
{
float deltaMag = delta.magnitude();
delta = delta * (1.f / deltaMag);
float bToPtProj = (p1 - wp0).dot(delta);
if (bToPtProj + lookahead <= deltaMag)
GetSplinePoint(pOut, delta * lookahead + p1, wpIdx);
else if (wpIdx < x4_waypoints.size() - 2)
GetSplinePointWithLookahead(pOut, wp1, wpIdx + 1, lookahead - (deltaMag - bToPtProj));
else
pOut = delta * (lookahead - (deltaMag - bToPtProj)) + wp1;
}
else
{
pOut = wp1;
}
}
}
void CPathFindSearch::GetSplinePointWithLookahead(zeus::CVector3f& pOut, const zeus::CVector3f& p1,
float lookahead) const
{
GetSplinePointWithLookahead(pOut, p1, xc8_curWaypoint, lookahead);
}
}