spill_item_stack returns created entities

[Thalassicus]

It'd be helpful if LuaSurface::spill_item_stack() returned the table of items it create.

I made aliens drop loot, and I'm attempting to mark the loot for deconstruction after there's no more enemies in a certain radius. This time delay means I can't use the instantaneous deconstruction provided by spill_item_stack(). I must store the items in a list, and check the list periodically.

[Rseding91]

Ok. I didn't want to do this in the past because it would make the function a lot slower returning all the entities every time but in the meantime I created a way of only returning the results if something is actually using them.

So, calling spill_item_stack() is as cheap as before and if you do something like: local results = surface.spill_item_stack() then you pay the cost of storing all the results.

[eradicator]

in the meantime I created a way of only returning the results if something is actually using them.

Could that also be applied to returning the ghost entity (if any) in LuaEntity.die()?