# Actor doesn\`t register hit from other actor on high velocity

**URL:** <https://forums.unrealengine.com/t/actor-doesn-t-register-hit-from-other-actor-on-high-velocity/472624>\
**Category:** World Creation\
**Tags:** event-hit, unreal-engine, Physics, hit-event, Collision, question\
**Created:** [October 8, 2020, 9:19pm UTC](https://forums.unrealengine.com/t/actor-doesn-t-register-hit-from-other-actor-on-high-velocity/472624 "2020-10-08T21:19:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![\_o\_170](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@\_o\_170](https://forums.unrealengine.com/u/_o_170)\
**Post date:** [October 8, 2020, 9:19pm UTC](https://forums.unrealengine.com/t/actor-doesn-t-register-hit-from-other-actor-on-high-velocity/472624/1 "2020-10-08T21:19:06Z")

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Hi, i have an actor(wall) and a bullet. Wall must print “hello” when something hits it, but it doesn`t respond to a hit from a bullet, while bullet responds(spawns decal). Bullet is on high velocity (very high). Both actors have collision mesh, ccd, simulation generates hit events enabled. Collision perset is BlockAll. Wall responds with small chance if i reduce bullet speed. I am new to unreal, so sorry if my question is stupid.

Bullet bp:

 ![317872-bp-bullet-09102020-11-54-08.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/4/f/5/4f5217666eb28139575017c0175ad882201a1ba1.png)

Wall bp:

 ![317873-bp-tree-09102020-11-42-47.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/9/0/390e80d36ee8bb91eb425cd45c27c81af3b4aae7.png)

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**Author:** ![Rev0verDrive](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/rev0verdrive/32/907214_2.png) [@Rev0verDrive](https://forums.unrealengine.com/u/Rev0verDrive)\
**Post date:** [October 8, 2020, 10:35pm UTC](https://forums.unrealengine.com/t/actor-doesn-t-register-hit-from-other-actor-on-high-velocity/472624/2 "2020-10-08T22:35:43Z")

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Post your wall code and collision settings

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**Author:** ![\_o\_170](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@\_o\_170](https://forums.unrealengine.com/u/_o_170)\
**Post date:** [October 9, 2020, 8:57am UTC](https://forums.unrealengine.com/t/actor-doesn-t-register-hit-from-other-actor-on-high-velocity/472624/3 "2020-10-09T08:57:20Z")

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i`ve edited my question