[Plugin] Leap Motion - Event Driven

[getnamo]

@Solidus569;511300

Yes, I should clarify though, this was for UE 4.10. Whatever magic was done for the 4.11 plugin has fixed the issue (it looks like mostly wrapping everything in UPROPERTY and modifying the private classes some). However in 4.10 all you have to do to replicate is:

>make a blank character
>add the leap interface
>add the “handsmoved” event node to the event graph
>from the LeapHand that is returned by the “handsmoved” node call “fingers”
>play and hold hand in front of face for ~1 minute

this should be enough to cause the crash as it happens specifically in the “setfingerlist” function when you say _private->fingers = fingers which is triggered on calling “fingers” from blueprint. If you’d like me to actually build a blueprint and post it here I can, but the steps are fairly simple.

Also, using Rift DK2 (I’ve tried plugging the leap into the headset and into the computer, doesn’t make a difference)

Thanks again!

NOTE: We’ve moved to 4.11 anyway so it doesn’t really matter anymore I suppose (last post was before that decision was made). However this may still be useful information for people stuck on the older versions.

Sounds like it was a garbage collection issue. Good to hear it’s been resolved in 4.11.

@;511431

Hi , echo_lo_L_PhysicsAsset has incorrect collision setup, there are unnecessary capsules obstructing of line trace from HMD, deleting them fixes the issue. Goodday

Nice fix, could you make a pull request with the modified asset on the page?