I'm using Box2D.
I think it's something to do with wall's fixture definition, but when a ball goes toward a wall at a 45 degree angle, I would expect it to bounce off at 135 degrees, but it always goes 90 degrees against wall. Why would this be?
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2 Answers
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2 I was setting a large restitution value (greater than 1), that caused the problem.
- \$\begingroup\$ Even if it seems silly, you should mark this the answer to your problem. \$\endgroup\$William– William2012-01-16 03:44:58 +00:00Commented Jan 16, 2012 at 3:44
- 1\$\begingroup\$ @MindWorX I understand that but system does not allow me to do it until two days after writing the question. \$\endgroup\$Tae-Sung Shin– Tae-Sung Shin2012-01-16 04:37:36 +00:00Commented Jan 16, 2012 at 4:37
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I know this is an old question, but I've just come across this solution and found that making sure restitution is not above 1 is not enough. friction also caused differentiation in the angle of which it bounces off. so setting friction to 0 allowed me to bounce a ball up against a 45* wall and get the expected perpendicular reaction.
