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How do I get actor velocity before the collision triggering NotifyHit?

When I override the NotifyHit in my custom character class and have it print out the character's GetVelocity() it is the velocity after the collision.

To verify this I shot one character downward onto the top of another character. The falling character's velocity in the XY plane was negligible and it had moving very quickly in the -Z direction, however when NotifyHit prints the velocity it consistently has a positive Z and movement in the XY plane of a comparable size to the Z movement, clearly being the velocity after the character has bounced off the character.

I need to get the velocity of the falling character immediately before the collision and I would like to not to have to keep an FVector that I update every frame. Am I hooking into the wrong function? How can I do this cleanly?

Product Version: UE 4.9
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asked Jun 04 '16 at 08:27 PM in C++ Programming

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