# Physics differences between PlayerController and AIController

**URL:** <https://forums.unrealengine.com/t/physics-differences-between-playercontroller-and-aicontroller/455039>\
**Category:** World Creation\
**Tags:** playercontroller, aicontroller, unreal-engine, Physics, UE4, Blueprint, question\
**Created:** [September 8, 2019, 9:31pm UTC](https://forums.unrealengine.com/t/physics-differences-between-playercontroller-and-aicontroller/455039 "2019-09-08T21:31:21Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![zghenzi](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@zghenzi](https://forums.unrealengine.com/u/zghenzi)\
**Post date:** [September 8, 2019, 9:31pm UTC](https://forums.unrealengine.com/t/physics-differences-between-playercontroller-and-aicontroller/455039/1 "2019-09-08T21:31:21Z")

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Hello, can someone help a noob understand why does this happen?

See video: [- YouTube](https://www.youtube.com/watch?v=b3IbMREzbYY)

When my projectile interacts with any AIController class (the black mannequin one in the video), it reacts as you would expect, launching the pawn into the air. Then why doesn’t the same thing happen when I hit a pawn with a PlayerController class (the red one)?

How can I reproduce the physics of the AIController on a PlayerController pawn?

Thanks.

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**Author:** ![Shadowriver](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Shadowriver](https://forums.unrealengine.com/u/Shadowriver)\
**Post date:** [September 8, 2019, 10:05pm UTC](https://forums.unrealengine.com/t/physics-differences-between-playercontroller-and-aicontroller/455039/2 "2019-09-08T22:05:15Z")

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Controller should have nothing to do with it, but collision configuration:

> **[Collision](https://docs.unrealengine.com/5.1/en-US/collision-in-unreal-engine/)**
>
> All about collision, collision responses, and collision presets in Unreal Engine.

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**Author:** ![zghenzi](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@zghenzi](https://forums.unrealengine.com/u/zghenzi)\
**Post date:** [September 9, 2019, 5:24pm UTC](https://forums.unrealengine.com/t/physics-differences-between-playercontroller-and-aicontroller/455039/3 "2019-09-09T17:24:29Z")

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Hey I went through the collision details of Capsule Component and Character Mesh of both PlayerController and AIController characters and made them equal, but the problem reproduces the same.