Doors run on the mission clock instead of being replicated

A door's position was an integrated countdown owned by whichever machine
the map-entity round-robin happened to deal it to. That left doors one
one-way-latency behind on every other machine, re-acquired at each state
change; drifting permanently on any frame hitch over a second, which the
old code dropped outright rather than clamping; and frozen mid-cycle,
collision volumes included, when their owning peer left, since ownership
transfer is not implemented.

Doors are clockwork with no inputs, and door/VTV physics is already local
pointer access - VTV::ProcessCollision reads door->currentVelocity off
the local object and the crush test is local VTV state - so a door does
not need an owner at all. Door::SlideDoor is now a phase function of
Application::GetMissionElapsed(), anchored so phase zero reproduces the
original DefaultState entry: fully open, starting to close. Every host
builds its own doorframe out of the map stream as a HermitInstance, the
instance kind DynamicEntityCreation does not broadcast, so nothing is
sent, nothing is received, and a peer leaving takes no doors with it.

Verified against a copy of the old integrator at 25fps with the real 10s
travel / 3s dead timings: identical 26s cycle, a constant one-frame
offset, and no drift across a 3s stall that leaves the old code
permanently 3 seconds out of phase.

Also fixes a latent bug found on the way: UpdateManager iterates the
dynamic master socket, which holds Independant and Hermit instances as
well as masters, and handed all of them to EntityUpdateReplicants, which
asserts MasterInstance.

Doorframes no longer consume a slot in the map-entity ownership cursor,
which shifts who owns every map entity dealt after them, so this cannot
share a session with an older build. The lobby publishes a simulation
revision and refuses to launch a mixed room.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

This commit is contained in:

Cyd

2026-08-07 16:25:42 -05:00

co-authored by

Claude Opus 5

parent 0e39075a20

commit 6e829f815e

8 changed files with 202 additions and 164 deletions

									
										MUNGA/DOORFRAM.cpp
									
		+8
		-1
	
												View File
												
				@@ -126,8 +126,15 @@ Logical

					}

					creation_message->classToCreate = RegisteredClass::DoorFrameClassID;

					//

					// Hermit, not Master: every host builds its own doorframe out of the map

					// stream (see the DoorFrameClassID exemption in LoadMapStream) and runs it

					// off the mission clock.  Hermit is the instance kind DynamicEntityCreation

					// does NOT broadcast, which is what stops N machines each announcing the

					// same doorframe and producing N-squared of them.

					//

					creation_message->instanceFlags =

						MasterInstance|DynamicFlag|MapFlag|TrappedFlag;

						HermitInstance|DynamicFlag|MapFlag|TrappedFlag;

					return true;

				}