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#110: cross-pod verified BOTH ways -- the cascade replicates, and peer fire alone drives it

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Two two-node benches close the last stated gap ("no two-node run has watched a
peer's view of an arm death"), the second at the user's insistence on the REAL
field composition after the first used the self-damage scalpel:

1. mp_armchain.sh (scalpel): B self-destroys dz_rarm mid-fight.  A's screen
   receives the whole cascade -- [zone-repl] dz_rarm lvl 0->1 AND the cascaded
   dz_rgun lvl 0->1 -- plus the respawn reset coming back clean (1->0).  B's
   post-cascade AFC pushes turned out to be the RESPAWN RE-ARM, correct
   behavior, not a gate failure.  (Also confirmed: the self-damage harness
   dispatches a real Entity::TakeDamageMessage -- the identical path a peer's
   round takes, so the scalpel and the field share every line from the handler
   down.)

2. mp_armgrind.sh (the field composition): stand-off at 180, NO self-damage
   anywhere, A grinding B with real cross-pod fire for six minutes.  On B:
     * 25 incremental arm-zone hits from A's weapons via the cylinder tables
       (dz_rgun reached 1.0 from pure accumulation -- 15 cascades on rehits)
     * dz_rarm finished by B's OWN AFC bay cooking off (AmmoBinAFC100 BAY FIRE
       350, half into dz_rarm) -- itself lit by A's fire crits: peer-originated
       end to end
     * [cascade] zone 9 -> AFC100 + AmmoBinAFC100 + Condenser6 force-failed,
       fire gate refusals logged
   On A: [zone-repl] dz_rarm 0->1 and dz_rgun 0->1 -- the shooter SEES the arm
   and pod die.  B symmetrically received A's torso deaths.

Also: DamageZone::ReadUpdateRecord gets a change-only [zone-repl] diagnostic
(BT_MP_LOG) -- the probe that made the peer side measurable; mp_armgrind.sh
opens with the stale-node taskkill the other benches already had (a leftover
node from an aborted launch joined a later lobby as a third instance).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joe DiPrima
2026-08-02 09:09:49 -05:00
co-authored by Claude Opus 5
parent 614849b4a6
commit 5d6ded73f0
3 changed files with 75 additions and 0 deletions
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engine/MUNGA/DAMAGE.cpp
+12
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@@ -160,6 +160,18 @@ void
Check_Pointer(update_record);
Verify(damageZoneIndex == update_record->damageZoneIndex);
// #110 MP verification (BT): log a PEER-side zone state transition, so the
// two-node bench can prove the destruction cascade replicates. Change-only.
if (getenv("BT_MP_LOG")
&& (damageZoneGraphicState.GetState() != update_record->damageZoneGraphicState
|| (damageLevel < 1.0f && update_record->damageLevel >= 1.0f)))
{
DEBUG_STREAM << "[zone-repl] zone " << damageZoneIndex
<< " '" << (const char *)damageZoneName << "'"
<< " lvl " << damageLevel << "->" << update_record->damageLevel
<< " gstate " << damageZoneGraphicState.GetState()
<< "->" << update_record->damageZoneGraphicState << std::endl;
}
damageLevel = update_record->damageLevel;
damageZoneState.SetState(update_record->damageZoneState);
damageZoneGraphicState.SetState(update_record->damageZoneGraphicState);