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cBoundingBox: Only forward collisions are calculated.

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This commit is contained in:
madmaxoft
2013-09-02 19:51:13 +02:00
parent a884fbb919
commit f5e0c8c77e
2 changed files with 16 additions and 6 deletions
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20
source/BoundingBox.cpp
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@@ -239,42 +239,50 @@ bool cBoundingBox::CalcLineIntersection(const Vector3d & a_Line1, const Vector3d
bool cBoundingBox::CalcLineIntersection(const Vector3d & a_Min, const Vector3d & a_Max, const Vector3d & a_Line1, const Vector3d & a_Line2, double & a_LineCoeff, char & a_Face)
{
if (IsInside(a_Min, a_Max, a_Line1))
{
// The starting point is inside the bounding box.
a_LineCoeff = 0;
a_Face = BLOCK_FACE_YM; // Make it look as the top face was hit, although none really are.
return true;
}
char Face = 0;
double Coeff = Vector3d::NO_INTERSECTION;
// Check each individual bbox face for intersection with the line, remember the one with the lowest coeff
double c = a_Line1.LineCoeffToXYPlane(a_Line2, a_Min.z);
if ((c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c))
if ((c >= 0) && (c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c))
{
Face = (a_Line1.z > a_Line2.z) ? BLOCK_FACE_ZP : BLOCK_FACE_ZM;
Coeff = c;
}
c = a_Line1.LineCoeffToXYPlane(a_Line2, a_Max.z);
if ((c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c))
if ((c >= 0) && (c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c))
{
Face = (a_Line1.z > a_Line2.z) ? BLOCK_FACE_ZP : BLOCK_FACE_ZM;
Coeff = c;
}
c = a_Line1.LineCoeffToXZPlane(a_Line2, a_Min.y);
if ((c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c))
if ((c >= 0) && (c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c))
{
Face = (a_Line1.y > a_Line2.y) ? BLOCK_FACE_YP : BLOCK_FACE_YM;
Coeff = c;
}
c = a_Line1.LineCoeffToXZPlane(a_Line2, a_Max.y);
if ((c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c))
if ((c >= 0) && (c >= 0) && (c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c))
{
Face = (a_Line1.y > a_Line2.y) ? BLOCK_FACE_YP : BLOCK_FACE_YM;
Coeff = c;
}
c = a_Line1.LineCoeffToYZPlane(a_Line2, a_Min.x);
if ((c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c))
if ((c >= 0) && (c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c))
{
Face = (a_Line1.x > a_Line2.x) ? BLOCK_FACE_XP : BLOCK_FACE_XM;
Coeff = c;
}
c = a_Line1.LineCoeffToYZPlane(a_Line2, a_Max.x);
if ((c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c))
if ((c >= 0) && (c < Coeff) && IsInside(a_Min, a_Max, a_Line1 + (a_Line2 - a_Line1) * c))
{
Face = (a_Line1.x > a_Line2.x) ? BLOCK_FACE_XP : BLOCK_FACE_XM;
Coeff = c;