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-rw-r--r--src/collision/Collision.cpp21
1 files changed, 19 insertions, 2 deletions
diff --git a/src/collision/Collision.cpp b/src/collision/Collision.cpp
index 396e3b85..9d656581 100644
--- a/src/collision/Collision.cpp
+++ b/src/collision/Collision.cpp
@@ -477,8 +477,16 @@ CCollision::TestLineTriangle(const CColLine &line, const CompressedVector *verts
if(plane.CalcPoint(line.p0) * plane.CalcPoint(line.p1) > 0.0f)
return false;
+ float p0dist = DotProduct(line.p1 - line.p0, normal);
+
+#ifdef FIX_BUGS
+ // line lines in the plane, assume no collision
+ if (p0dist == 0.0f)
+ return false;
+#endif
+
// intersection parameter on line
- t = -plane.CalcPoint(line.p0) / DotProduct(line.p1 - line.p0, normal);
+ t = -plane.CalcPoint(line.p0) / p0dist;
// find point of intersection
CVector p = line.p0 + (line.p1-line.p0)*t;
@@ -1286,8 +1294,17 @@ CCollision::ProcessLineTriangle(const CColLine &line,
if(plane.CalcPoint(line.p0) * plane.CalcPoint(line.p1) > 0.0f)
return false;
+ float p0dist = DotProduct(line.p1 - line.p0, normal);
+
+#ifdef FIX_BUGS
+ // line lines in the plane, assume no collision
+ if (p0dist == 0.0f)
+ return false;
+#endif
+
// intersection parameter on line
- t = -plane.CalcPoint(line.p0) / DotProduct(line.p1 - line.p0, normal);
+ t = -plane.CalcPoint(line.p0) / p0dist;
+
// early out if we're beyond the mindist
if(t >= mindist)
return false;