# Box collision not working with floating pawn movement

**URL:** <https://forums.unrealengine.com/t/box-collision-not-working-with-floating-pawn-movement/381511>\
**Category:** Programming & Scripting\
**Tags:** unreal-engine\
**Created:** [January 11, 2017, 6:11am UTC](https://forums.unrealengine.com/t/box-collision-not-working-with-floating-pawn-movement/381511 "2017-01-11T06:11:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Willard720](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Willard720](https://forums.unrealengine.com/u/Willard720)\
**Post date:** [January 11, 2017, 6:11am UTC](https://forums.unrealengine.com/t/box-collision-not-working-with-floating-pawn-movement/381511/1 "2017-01-11T06:11:45Z")

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I am trying to create an extremely simple box collider that moves down at a constant rate, however the box, even when set to “Block All” travels through everything.

This is the tick/moving of the pawn, and to the right, we can see the details of the collider.

 ![121559-floating+pawn+1.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/b/b/f/bbf3c128c047b60a94f5e99b2fe6b7eb15eee07a.png)

And as an example of what I’m doing:

 ![121560-floating+pawn+2.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/1/e/d1ebb8d94b57e94874a7a085188ed798a9d5ebb7.jpeg)

Just trying to simply move this box down and have it stop when it reaches the floor, but it keeps going through.

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**Author:** ![Dartanlla](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/dartanlla/32/724052_2.png) [@Dartanlla](https://forums.unrealengine.com/u/Dartanlla)\
**Post date:** [January 12, 2017, 3:09am UTC](https://forums.unrealengine.com/t/box-collision-not-working-with-floating-pawn-movement/381511/2 "2017-01-12T03:09:17Z")

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I replicated your issues exactly and was able to fix it by dragging the box collision onto the “DefaultSceneRoot”. For some reason the collision volume has to be the scene root to stop the box from going through the floor. I believe this is true for all movement modes when using Pawns or Characters.

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**Author:** ![Willard720](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Willard720](https://forums.unrealengine.com/u/Willard720)\
**Post date:** [January 12, 2017, 3:56am UTC](https://forums.unrealengine.com/t/box-collision-not-working-with-floating-pawn-movement/381511/3 "2017-01-12T03:56:14Z")

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Oh, wow, thanks! Works perfect!