No interactions after erasing body

[Anton Gladky]

Hi all,

I've got a fairly simple script to build some ballistic aggregates which I will use in later simulations. I basically started with a seed particle at the origin, which has dynamic=False and then create particles and fire them randomly towards the aggregate. When contact is detected (O.interactions.countReal() increases in my collision checking callback) I freeze that particle (setting dynamic = False) and create a new one.

This basically works OK. But I have to check for particles that miss the aggregate. So in my collision checking callback, if there has been no increase in interactions, and if I am far from the seed particle, I erase the particle with O.bodies.erase.

This is where things seem to behave unexpectedly. I erase the particle, and a few timesteps later create a new one. This takes the same ID as the deleted one. But now, no interactions are ever detected - even when the particles pass through each other! Does O.bodies.erase not do what I think it does?

Any suggestions welcome!

Thanks, Mark

[Anton Gladky (gladky-anton)]

Fixed in b92389065