# \[Flash8\] How to make MC's unabe to pass eachother

**URL:** https://forum.kirupa.com/t/flash8-how-to-make-mcs-unabe-to-pass-eachother/196024
**Category:** flash
**Created:** [August 4, 2006, 5:45pm UTC](https://forum.kirupa.com/t/flash8-how-to-make-mcs-unabe-to-pass-eachother/196024 "2006-08-04T17:45:17Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![xytor](https://avatars.discourse-cdn.com/v4/letter/x/90ced4/32.png) [@xytor](https://forum.kirupa.com/u/xytor)
#### Post date: [August 4, 2006, 5:45pm UTC](https://forum.kirupa.com/t/flash8-how-to-make-mcs-unabe-to-pass-eachother/196024/1 "2006-08-04T17:45:17Z")

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Hi, I have 2 objects, a bouncing ball and a barrier. How do i make it so that the ball may not pass the barrier? It seems that no matter what I do, there are circumstances in which the ball does pass the barrier…