Re: [Swarm-Support] Segmentation Violation

[Steve Railsback]

Alex Olivas wrote:

> I modified bug slightly to "interact" with nearest neighbor bugs.
> I would like for an individual bug's step to depend on the state
> of the bugs around it.  I defined a simple method called getRole,
>
> - (int)getRole;
> {
>  return role;
> }
>
> My code compiles just fine, but when I run it crashes in the
> bug's step method at the line...
>
>  int neighborRole = [[world getObjectAtX: xPos+deltaX Y: yPos+deltaY] 
> getRole];

One thing to check very carefully is whether (xPos+deltaX) or 
(yPos+deltaY) could ever exceed the size of world. If they do, I think 
you'll get a segmentation fault.

Steve R.

--
Lang Railsback & Associates