Enum WorldAccess 

pub enum WorldAccess<'a> {
    None,
    Shared(&'a dyn Any),
    Exclusive(&'a mut dyn Any),
}

How an agent’s execute may reach the ECS World this frame, granted by the scheduler according to the agent’s Agent::access declaration.

The parallel executor uses this to hand a serial (Exclusive) agent a mutable world while giving concurrently-running read-only (Shared) agents a shared reference — World is Sync, so many &World readers are safe, but a mutable borrow must be exclusive.

Variants

None

No world access — the agent reads only the LaneBus and writes its deck.

Shared(&'a dyn Any)

Shared, read-only world. Multiple Shared agents may run concurrently.

Exclusive(&'a mut dyn Any)

Exclusive, mutable world. The agent runs serially.