flewkey/cuberite-2a
1
0
Fork 0
Code Releases Activity

Fixed an error in cBoundingBox's line-collision algorithm.

Browse Source
This commit is contained in:
madmaxoft
2013-09-01 20:39:22 +02:00
parent 0dec48d496
commit e35402c61a
2 changed files with 12 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
source/BoundingBox.cpp
View File

@@ -202,37 +202,37 @@ bool cBoundingBox::CalcLineIntersection(const Vector3d & a_Min, const Vector3d &
// 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)
if ((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)
if ((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)
if ((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)
if ((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)
if ((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)
if ((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;
@@ -244,14 +244,6 @@ bool cBoundingBox::CalcLineIntersection(const Vector3d & a_Min, const Vector3d &
return false;
}
Vector3d Intersection = a_Line1 + (a_Line2 - a_Line1) * Coeff;
if (!IsInside(a_Min, a_Max, Intersection))
{
// The line intersects with the individual wall planes, but not within this bounding box
return false;
}
// True intersection, return all the values:
a_LineCoeff = Coeff;
a_Face = Face;
return true;