Search in
Sort by:

Question Status:

Search help

  • Simple searches use one or more words. Separate the words with spaces (cat dog) to search cat,dog or both. Separate the words with plus signs (cat +dog) to search for items that may contain cat but must contain dog.
  • You can further refine your search on the search results page, where you can search by keywords, author, topic. These can be combined with each other. Examples
    • cat dog --matches anything with cat,dog or both
    • cat +dog --searches for cat +dog where dog is a mandatory term
    • cat -dog -- searches for cat excluding any result containing dog
    • [cats] —will restrict your search to results with topic named "cats"
    • [cats] [dogs] —will restrict your search to results with both topics, "cats", and "dogs"

[Closed] Unwelded components collide within actor


We're having big issues with UE right now. We are working on big vehicles with turrets, and collisions are becoming a problem.

  • Turrets can move around, so we can't use the auto-weld feature. Doing so results in very large CPU time because of unwelding and welding at each movement, it's way too expensive - 2ms per tick per object.

  • If we don't use auto-welding, we encounter an even bigger problem : self-collision. Components within the actor collide with each other - we're getting NotifyHit() calls with a root mesh and a turret mesh.

The first thing is probably fine - auto weld doesn't have to be fast, it's understandable.

But the second problem is proving difficult : the only fix we have right now is to remove turret collision alltogether, which is a big problem for us.

Is there a workaround ?

Product Version: UE 4.12
more ▼

asked Jun 19 '16 at 02:50 PM in Bug Reports

avatar image

589 53 63 131

avatar image Adam Davis STAFF Jun 20 '16 at 06:00 PM

Hi Gwenn,

Have you tried creating a custom collision component or having the actor ignore collision>self on NotifyHit?

(comments are locked)
10|2000 characters needed characters left
Viewable by all users

The question has been closed Sep 08 '16 at 09:14 AM by StrangerGwenn for the following reason:

Duplicate Question

1 answer: sort voted first

Hi Gwenn,

We have not heard from you in several days. I am marking this as answered for tracking purposes. If you are still experiencing this error, please comment with the requested information.

more ▼

answered Jun 23 '16 at 09:29 PM

(comments are locked)
10|2000 characters needed characters left
Viewable by all users

Follow this question

Once you sign in you will be able to subscribe for any updates here

Answers to this question