# How to simulate reflexion on movable objects ?

**URL:** <https://forums.unrealengine.com/t/how-to-simulate-reflexion-on-movable-objects/391235>\
**Category:** Rendering\
**Tags:** reflection, movable, unreal-engine, Lighting, UE4, question\
**Created:** [April 18, 2017, 4:07pm UTC](https://forums.unrealengine.com/t/how-to-simulate-reflexion-on-movable-objects/391235 "2017-04-18T16:07:40Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![anonymous\_user\_52716630](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_52716630](https://forums.unrealengine.com/u/anonymous_user_52716630)\
**Post date:** [April 18, 2017, 4:07pm UTC](https://forums.unrealengine.com/t/how-to-simulate-reflexion-on-movable-objects/391235/1 "2017-04-18T16:07:40Z")

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Hi ! I’ve got this simple scene with spheres with a lot of reflexion floating around in a closed space. Unfortunatly those sphere have a very weird way to reflect their environnment. Is their any way to cheat to make them reflect their environnment ?

Thanks

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**Author:** ![anonymous\_user\_cbf8aac6](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_cbf8aac6](https://forums.unrealengine.com/u/anonymous_user_cbf8aac6)\
**Post date:** [April 18, 2017, 6:39pm UTC](https://forums.unrealengine.com/t/how-to-simulate-reflexion-on-movable-objects/391235/2 "2017-04-18T18:39:53Z")

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can you upload the project?

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**Author:** ![Raildex](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Raildex](https://forums.unrealengine.com/u/Raildex)\
**Post date:** [April 18, 2017, 8:14pm UTC](https://forums.unrealengine.com/t/how-to-simulate-reflexion-on-movable-objects/391235/3 "2017-04-18T20:14:04Z")

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That’s what Reflection Captures are for. Simply place them in your Level and specular/metallic Materials will automatically use the Reflection Spheres to feed the surfaces with an reflection.

However, the Reflection Captures are prebaked, thus you can’t “create” Reflections at runtime.

You may also look at this: [Reflection Environment | Unreal Engine Documentation](https://docs.unrealengine.com/latest/INT/Engine/Rendering/LightingAndShadows/ReflectionEnvironment/)

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<div class="post-metadata">

**Author:** ![anonymous\_user\_52716630](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_52716630](https://forums.unrealengine.com/u/anonymous_user_52716630)\
**Post date:** [April 19, 2017, 8:37am UTC](https://forums.unrealengine.com/t/how-to-simulate-reflexion-on-movable-objects/391235/4 "2017-04-19T08:37:12Z")

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Hi thanks for answering.

Project is just here :

[https://we.tl/fPGtMefszB](https://we.tl/fPGtMefszB)

So i’m feeling in pain : it’s not possible to have reflexion on movable objects ? Isn’t there a technique ?

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**Author:** ![Raildex](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Raildex](https://forums.unrealengine.com/u/Raildex)\
**Post date:** [April 19, 2017, 8:41am UTC](https://forums.unrealengine.com/t/how-to-simulate-reflexion-on-movable-objects/391235/5 "2017-04-19T08:41:22Z")

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You need to use Reflection Captures as I mentioned.  
They will automatically feed their image on reflective materials

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<div class="post-metadata">

**Author:** ![anonymous\_user\_52716630](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_52716630](https://forums.unrealengine.com/u/anonymous_user_52716630)\
**Post date:** [April 19, 2017, 8:45am UTC](https://forums.unrealengine.com/t/how-to-simulate-reflexion-on-movable-objects/391235/6 "2017-04-19T08:45:59Z")

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Yes I’ve understand. There is reflection captures (both spheres and cube) in my scene already. But my movable objects are not receiving any information from them. They receive their reflective informations from the cubemap set in skylight. Is it possible to have a skymap with a reflectioncubemap that affects my movable objects only ?

Thanks

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<div class="post-metadata">

**Author:** ![anonymous\_user\_52716630](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_52716630](https://forums.unrealengine.com/u/anonymous_user_52716630)\
**Post date:** [April 19, 2017, 11:00am UTC](https://forums.unrealengine.com/t/how-to-simulate-reflexion-on-movable-objects/391235/7 "2017-04-19T11:00:00Z")

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Well, the issue was coming from “actor hidden in game” enable for both of my reflection spheres and cube. Raildex\_ you were kinda right !! thanks