diff options
Diffstat (limited to 'src/core/Collision.cpp')
| -rw-r--r-- | src/core/Collision.cpp | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/core/Collision.cpp b/src/core/Collision.cpp index b68214af..77e28a10 100644 --- a/src/core/Collision.cpp +++ b/src/core/Collision.cpp @@ -1801,6 +1801,21 @@ CColSphere::Set(float radius, const CVector ¢er, uint8 surf, uint8 piece) this->piece = piece; } +bool +CColSphere::IntersectRay(CVector const& from, CVector const& dir, CVector &entry, CVector &exit) +{ + CVector distToCenter = from - center; + float distToTouchSqr = distToCenter.MagnitudeSqr() - sq(radius); + float root1, root2; + + if (!CGeneral::SolveQuadratic(1.0f, DotProduct(distToCenter, dir) * 2.f, distToTouchSqr, root1, root2)) + return false; + + entry = from + dir * root1; + exit = from + dir * root2; + return true; +} + void CColBox::Set(const CVector &min, const CVector &max, uint8 surf, uint8 piece) { |