[SOLVED] Help! What is that attribute that only run a system with all its queries?

I remember there is a new API, as @5argon mentioned at some place, which only allow system to run with all its queries return results.
I'm not lazy! I try my best to search the packages, documents and forum, with those key words: "update", "attribute", "dis", but nothing found.. Any one know about that?

 

You need to set your IComponents to a specific WriteGroup then in your query you filter it with Options = EntityQueryOptions.FilterWriteGroup
Also have a closer look at the Transform System because it use it.

 

Thanks for your help! I think WriterGroup is to exclude those component without explicitly declared in query. What I'm trying is to make system only run with queryA AND queryB, not OR.

 

Thanks @GilCat , I found it! It is under the ComponentSystemBase with comments!

public void RequireForUpdate(EntityQuery query)

 

Note that this will override all prior update criteria behaviour as well. For example previously you have 2 EQs working on a system with GetEntityQuery, so if one of the 2 EQs got a query then it is an Update. But if you use RequireForUpdate once with a new 3rd EQ then the prior 2 EQs doesn't matter anymore. It is either you got a query in that 3rd EQ and get an update, or no update.

 

Yeah, right I was on the phone and replied too quickly
I believe you can combine all your EntityQueryDesc and make that combined query a requirement:

Code (CSharp):

1.       var combineQuery = GetEntityQuery(queryDesc1, queryDesc2, queryDesc3);
2.       RequireForUpdate(combineQuery);

Haven't tested it tho.