x

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"

LockedAxisMode Has No Effect in C++

I am trying to constrain physics. In blueprint it works fine but I can't get it to work in C++.

I have a USphereComponent that I'm creating:

 UPROPERTY()
 TSubobjectPtr<USphereComponent> CollisionComp;

And initializing:

 CollisionComp = PCIP.CreateDefaultSubobject<USphereComponent>(this, TEXT("SphereComp"));    
 RootComponent = CollisionComp;

And configuring the physics state:

 CollisionComp->SetSimulatePhysics(true);
 CollisionComp->InitSphereRadius(0.01f);        
 CollisionComp->BodyInstance.bUseCCD = true;
 CollisionComp->BodyInstance.LockedAxisMode = ELockedAxis::Y;
 CollisionComp->SetEnableGravity(false);

The only thing that isn't working is the locked axis. Am I missing a step somewhere?

Product Version: Not Selected
Tags:
more ▼

asked Nov 10 '14 at 11:28 PM in C++ Programming

avatar image

hyperdr1ve
583 26 51 117

(comments are locked)
10|2000 characters needed characters left

1 answer: sort voted first

The LockedAxisMode stuff is all performed as part of the initialization for the FBodyInstance that is part of the USphereComponent (and other shapes). In 4.5 and earlier, you can force the locked axis mode to update by re-calling the DOF Lock initializer, for instance:

 CollisionComp->BodyInstance.LockedAxisMode = ELockedAxis::Y;
 CollisionComp->BodyInstance.CreateDOFLock();

There was a recent patch that adds a new setter function that does exactly the same thing. It will probably be in 4.6:

 CollisionComp->BodyInstance.SetLockedAxis(ELockedAxis::Y);
more ▼

answered Nov 11 '14 at 04:33 PM

avatar image

hyperdr1ve
583 26 51 117

(comments are locked)
10|2000 characters needed characters left
Your answer
toggle preview:

Up to 5 attachments (including images) can be used with a maximum of 5.2 MB each and 5.2 MB total.

Follow this question

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

Answers to this question