Execution order key (§39); default PRIORITY_EVENT_DISPATCH.
ReadonlysourceThe step-6 system whose tracked worlds are drained here.
The worlds whose events are dispatched, in the source's tracking order.
Nothing to release (§39 teardown).
The worlds belong to the source system, which drops its own references in
its dispose; dropping them here as well would make teardown order matter.
Dispatches every tracked world's queued events, in tracking order (§39 step 9, §6b).
Exactly the pass PhysicsSystem.fixedUpdate performs when it dispatches
its own events — same worlds, same order, same method — moved to its own
priority. Allocates nothing.
No per-registration setup is needed (§39).
Dispatches every queued physics event of a PhysicsSystem's worlds at §39's step 9.
See the module header for what the split changes and what it deliberately leaves identical.