IJobForEachWithEntity: Access ComponentData from another entity

Unity Engine
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1

Is there any way to access the ComponentData from another entity inside IJobForEachWithEntity? From my understanding, currently there is no way to do that.

2

Hi just use:

ComponentDataFromEntity<MyData>
BufferFromEntity<MyBuffer>

you get both from JobComponentSystem

GetComponentDataFromEntity<MyData>()
GetBufferFromEntity<MyBuffer>()

access is then:

ComponentDataFromEntity<MyData> compdataFromEntity;
BufferFromEntity<MyBuffer> bufferFromEntity;

MyData data = compdataFromEntity[someEntity];
DynamicBuffer<MyBuffer> buffer = bufferFromEntity[someEntity];

you can set components this way:

compdataFromEntity[someEntity] = data;

but you have to add the attribute NativeDisableParallelForRestrictionAttribute to the member:

[NativeDisableParallelForRestriction] ComponentDataFromEntity<MyData>
3

Thanks for the replying. Unfortunately, what I want to achieve is access entity from another archetype chunk. Seems like GetComponentDataFromEntity only able to get entity from the current archetype chunk.

4

No, you can do that!

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5

Incorrect. CDFE it’s lookup form all entities in current EM, it get’s data by type index from all types dictionary.

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