Method GetOrCreateSystemsAndLogException

GetOrCreateSystemsAndLogException(NativeList<SystemTypeIndex>, AllocatorHandle)

Creates systems from the list of types which aren't already created in the current world.

Declaration

public NativeList<SystemHandle> GetOrCreateSystemsAndLogException(NativeList<SystemTypeIndex> types, AllocatorManager.AllocatorHandle allocator)

Parameters

Type	Name	Description
NativeList<SystemTypeIndex>	types	The system types to create, in the order in which they should be created.
AllocatorManager.AllocatorHandle	allocator	The allocator to use to allocate the output system list

Returns

Type	Description
NativeList<SystemHandle>	A list of system instances

Remarks

This function creates systems in the order they are passed in, and ignores CreateBeforeAttribute and CreateAfterAttribute validity. If errors are encountered either when creating the system or when calling OnCreate, a default SystemHandle will be returned for that system.

Important: This function creates a sync point if any systems are created, which means that the EntityManager waits for all currently running Jobs to complete before creating the systems, and no additional Jobs can start before the function is finished. A sync point can cause a drop in performance because the ECS framework may not be able to make use of the processing power of all available cores.