Fixed a bug from class.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/common/CollisionDetector.java b/src/common/CollisionDetector.java
index a4c7b53..f193a29 100644
--- a/src/common/CollisionDetector.java
+++ b/src/common/CollisionDetector.java
@@ -18,6 +18,7 @@ import javax.media.j3d.TriangleFanArray;
 import javax.media.j3d.TriangleStripArray;

 import javax.vecmath.Matrix3f;

 import javax.vecmath.Point3f;

+import javax.vecmath.SingularMatrixException;

 import javax.vecmath.Tuple3f;

 import javax.vecmath.Vector3f;

 

@@ -387,7 +388,11 @@ public class CollisionDetector {
 			Matrix3f tmp = new Matrix3f(a.previousPosition.x - a.position.x, triangle.b.x - triangle.a.x, triangle.c.x - triangle.a.x,

 			                            a.previousPosition.y - a.position.y, triangle.b.y - triangle.a.y, triangle.c.y - triangle.a.y,

 			                            a.previousPosition.z - a.position.z, triangle.b.z - triangle.a.z, triangle.c.z - triangle.a.z);

-			tmp.invert();

+			try {

+				tmp.invert();

+			} catch (SingularMatrixException e) {

+				return EMPTY_COLLISION_LIST;

+			}

 			Vector3f intercept = new Vector3f();

 			intercept.scaleAdd(-1, triangle.a, a.previousPosition);

 			tmp.transform(intercept);