# Collision event not working. (One specific object)

**URL:** <https://forums.unrealengine.com/t/collision-event-not-working-one-specific-object/478053>\
**Category:** World Creation\
**Tags:** event-hit, unreal-engine, Physics, Collision, question\
**Created:** [January 31, 2021, 3:11pm UTC](https://forums.unrealengine.com/t/collision-event-not-working-one-specific-object/478053 "2021-01-31T15:11:43Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![anonymous\_user\_77bfa3251](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_77bfa3251](https://forums.unrealengine.com/u/anonymous_user_77bfa3251)\
**Post date:** [January 31, 2021, 3:11pm UTC](https://forums.unrealengine.com/t/collision-event-not-working-one-specific-object/478053/1 "2021-01-31T15:11:43Z")

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Like the title says, I have all my hit & overlap events working.  
The only Hit event that will not trigger is the hit event between the player & the environment.  
If I change to overlap instead of hit & use the overlap event it works.  
Collision with all the other set types also works (Enemy & EnemeyBullet.)

I cant for the life of me figure out what exactly I am doing wrong here.

 ![328505-colision-issue.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/2/5/d25fdaac01bc6a3403855dce3d3e0464b058286d.png)

 ![328506-colision-issue2.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/c/c/5/cc58e7789db5b1ace98feb9f85899542c91b9775.jpeg)

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**Author:** ![chrudimer](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/chrudimer/32/918651_2.png) [@chrudimer](https://forums.unrealengine.com/u/chrudimer)\
**Post date:** [January 31, 2021, 3:58pm UTC](https://forums.unrealengine.com/t/collision-event-not-working-one-specific-object/478053/2 "2021-01-31T15:58:01Z")

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Hi, you need to check “Simulation Generates Hit Events” if you want a Hit Event triggered in blueprints. If you don’t do this, it will still collide, but you won’t get any event in blueprints.

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**Author:** ![anonymous\_user\_77bfa3251](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_77bfa3251](https://forums.unrealengine.com/u/anonymous_user_77bfa3251)\
**Post date:** [January 31, 2021, 4:26pm UTC](https://forums.unrealengine.com/t/collision-event-not-working-one-specific-object/478053/3 "2021-01-31T16:26:07Z")

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That does not change anything for me.  
But other Event hit work also without “Simulation Generates Hit events” checked.

 ![328513-thisworksfine.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/5/b/0/5b0b8db6d174b53c48c0990f8c9a73573eef32d2.png)

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<div class="post-metadata">

**Author:** ![anonymous\_user\_77bfa3251](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_77bfa3251](https://forums.unrealengine.com/u/anonymous_user_77bfa3251)\
**Post date:** [January 31, 2021, 4:27pm UTC](https://forums.unrealengine.com/t/collision-event-not-working-one-specific-object/478053/4 "2021-01-31T16:27:16Z")

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The collision between Enemy & the environment work just fine. & hit event with player as wel.

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<div class="post-metadata">

**Author:** ![anonymous\_user\_77bfa3251](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_77bfa3251](https://forums.unrealengine.com/u/anonymous_user_77bfa3251)\
**Post date:** [February 1, 2021, 5:34pm UTC](https://forums.unrealengine.com/t/collision-event-not-working-one-specific-object/478053/5 "2021-02-01T17:34:08Z")

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Ok after quit some more testing I actually would need to rephrase the question.

The thing I cant figure out is how to get the “On component hit” event to fire while it is not the root.  
On overlap will fire just fine. only the hit will not trigger.