forest falcon
Hi! Can anyone tell me how to get the BuildPhysicsWorld to access the Collision World in order to make an OverlapSphere function for entities?
Added 2 pictures with the code that worked just fine in 0.51 and the new Console error after upgrading to 1.0.
odd canopy
tldr that stuff is on a singleton now in order to enable access from bursted isystems if desired
forest falcon
Thank you! I’ll check it out 
forest falcon
@odd canopy I just tried to use SystemAPI but unfortunately I can't use this in a Monobehaviour. Is there a way to do it outside a SystemBase?
odd canopy
no, systemapi doens't work outside a SystemBase or ISystem; you can use entitymanager though
forest falcon
And how can I use EntityManager to get the PhysicsWorldSingleton then?
@odd canopy I'm trying to use it entitymanager by using CreateSingleton and entityManager.World.GetExistingSystemManaged but I can't make it work
odd canopy
what are you trying to do overall? in general, i wouldn't think trying to talk to entities this much from a monobehaviour would be the best plan
forest falcon
I'm just trying to get the CollisionWorld in order to be able to do a OverlapSphere function in order to detect collisions. And I did this in 0.51 without an issue. I want to do it inside a monobehaviour because that's where I do most of the logic of what I want to do.
odd canopy
have you tried entitymanager.GetSingleton?
and have you established that this code is running after the code that creates the physics world singleton? in a system, this is easy to do with RequireForUpdate<PhysicsWorldSingleton>, but in a monobehaviour it's trickier
forest falcon
entitymanager.GetSingleton() doesn't exist in the list of options apparently
odd canopy
ehm
TIL
@runic drum how do you get a singleton from outside a system
i guess you have to manually GetEntityQuery and then assert that there's only one thing in it
forest falcon
How do I do GetEntityQuery?
I can only create it with EntityManager
Or did you mean create?
odd canopy
yeah create, but it caches it so it's secretly getorcreate
this api surface is so annoying
forest falcon
Sry for making so many questions but what do I exactly put in CreateEntityQuery?
PhysicsWorldSingleton?
forest falcon
Ok but I'm kinda confused
I'm trying this:
EntityQuery PWS = entityManager.CreateEntityQuery<PhysicsWorldSingleton>();
And it throws an error
forest falcon
Should it be like this?:
EntityQuery PWS = entityManager.CreateEntityQuery(ComponentType<PhysicsWorldSingleton>());
odd canopy
yes
forest falcon
It throws me this error:
error CS0308: The non-generic type 'ComponentType' cannot be used with type arguments
odd canopy
sorry i forgot everything
EntityQuery PWS = entityManager.CreateEntityQuery(ComponentType.ReadWrite<PhysicsWorldSingleton>());
runic drum
Keep in mind, you should remember to dipose queries yourself created with entityManager.CreateEntityQuery. So ideally use EntityQuery PWS = new EntityQueryBuilder(Allocator.Temp).WithAll<PhysicsWorldSingleton>().Build(entityManager); instead. EntityQueries created with EntityQueryBuilder is automatically disposed. For .Build(EntityManager) disposal happens on world destruction.