In this merge request, I am adding two new type of tasks: sink_ghost and sink_accretion. The ghost is an implicit task between the mergers and the accretion and the accretion is an interaction between a sink particle and a hydro particle that is done on active sink particles (not necessary active hydro).
Due to the "recent" addition of the union for the cell structure, I had to define new files for GEAR. They are simply a copy/paste from the default ones with a constant probability of creating sink particles. This is done for debugging and will change once I will start to implement the physics.
I had some issues with the sink formation tasks that were only created in top level cells that contain hydro particles. Now in order to be safer, I am creating a sink formation task for all the top level cells (but then they are not necessary active). This could be changed in the future.
I am also sharing the IACT functions between the accretion and the compute_sink_formation tasks and it might not be the most efficient way of doing it. I have added a TODO in order to mention that we could swap the loops (first hydro, then sink -> first sink, then hydro) in order to speedup a bit the code.
Here you can see the new task dependencies:
My next steps, in the order, will be to:
Implement the star formation from the sink (I will steal the star formation task and adapt the behavior depending on the policies),
Start working on the physics,
Implement the MPI.
As I am close to the end of my thesis, I am not expecting to finish everything, but I should be able to at least start with the physics.
