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#108 forensics block (pre-717): ghost detector + IDs + field envs

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The night-11 instrumentation that makes the next ghost/K-D report
diagnosable instead of anecdotal:
- UNGATED [ghost] stale-replicant detector: ReadUpdateRecord stamps every
  applied record; the death-handler tick logs ONE line per starvation
  episode (>600 frames, unburied) with entity id + mode + last position,
  plus a GHOST matchlog record.  Verified both ways: zero false positives
  on a healthy 2-node session; fires on both nodes at frame 601 after a
  mid-session relay kill.
- Entity IDs on the render forensics (MakeMechRenderables / RemakeEntity /
  wreck-swap fallbacks) and the replicant un-wreck line un-gated -- ghost
  triage no longer needs players to set envs.
- players/*.bat (steam + both joins): BT_MATCHLOG/BT_SCORE_LOG/BT_DEATH_LOG
  on for every field session.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Joe DiPrima
2026-08-04 16:34:06 -05:00
co-authored by Claude Fable 5
parent c38377a6d2
commit 81dda84e9b
8 changed files with 96 additions and 10 deletions
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game/reconstructed/mechdmg.cpp
+49 -6
View File
@@ -1193,8 +1193,20 @@ extern void BTSpawnDamageEffect(Mech *mech, int effect_resource, int segment_ind
// unported "RemakeEntity" render state). Entity* param -> Mech* binds fine.
extern void BTRemakeMechModel(Entity *entity);
//
// #108 bridge: Mech::ReadUpdateRecord (mech.cpp, incomplete-type TU for the
// handler) stamps the ghost detector through this.
//
void
BTMechNoteUpdateApplied(void *mech_v)
{
Mech *m = (Mech *)mech_v;
if (m != 0 && m->DeathHandlerPtr() != 0)
((MechDeathHandler *)m->DeathHandlerPtr())->NoteUpdateApplied();
}
MechDeathHandler::MechDeathHandler(Mech *mech) // @0042a984
: owner(mech), prevMode(0)
: owner(mech), prevMode(0), ghostFrames(0), ghostLogged(0)
{
// per-zone last-damage cache, zeroed (binary this[0x10], size mech+0x11c).
int count = (mech != 0 && mech->damageZoneCount > 0) ? mech->damageZoneCount : 0;
@@ -1217,6 +1229,35 @@ void
if (owner == 0)
return;
// #108 GHOST DETECTOR (PORT, ungated -- the night-9 forensic): a visible
// REPLICANT that stops receiving update records is exactly what "everyone
// shoots thin air" looks like from the other side. ReadUpdateRecord
// stamps arrivals (NoteUpdateApplied); ~20s of silence on an unburied
// replicant logs ONE [ghost] line per episode with the identity + last
// position, then re-arms when records resume. Frame-counted (Tick has no
// dt); 600 frames ~ 10-20s at field rates.
if (owner->GetInstance() == Entity::ReplicantInstance)
{
++ghostFrames;
if (ghostFrames > 600 && !ghostLogged
&& !owner->WreckBuried()) // buried wrecks are expected-silent
{
ghostLogged = 1;
DEBUG_STREAM << "[ghost] replicant " << owner->GetEntityID()
<< " has received NO update records for " << ghostFrames
<< " frames (mode " << (int)owner->MovementMode()
<< ") last pos (" << owner->localOrigin.linearPosition.x
<< "," << owner->localOrigin.linearPosition.z
<< ") -- stale-replicant / ghost signature (#108)\n" << std::flush;
if (BTMatchLogActive())
BTMatchLog("GHOST", "mech=%d:%d frames=%d mode=%d x=%.1f z=%.1f",
BTMatchHostOf(owner->GetEntityID()), (int)owner->GetEntityID(),
ghostFrames, (int)owner->MovementMode(),
(float)owner->localOrigin.linearPosition.x,
(float)owner->localOrigin.linearPosition.z);
}
}
// REPLICANT UN-WRECK (#94): fire on the DEATH-STATE EXIT edge of the
// replicated SimulationState dial (MovementMode 9/2 are the death modes;
// they never revert except through Mech::Reset, whose SetMovementMode(0)
@@ -1251,11 +1292,13 @@ void
BTStartWarpEffect((float)owner->localOrigin.linearPosition.x,
(float)owner->localOrigin.linearPosition.y,
(float)owner->localOrigin.linearPosition.z);
if (getenv("BT_DEATH_LOG"))
DEBUG_STREAM << "[respawn] replicant un-wrecked + warp (mode "
<< oldMode << "->" << mode << ") at ("
<< owner->localOrigin.linearPosition.x << ","
<< owner->localOrigin.linearPosition.z << ")\n" << std::flush;
// #108 forensics: UNGATED -- one line per peer respawn; a field
// night's ghost triage needs these without asking players for envs.
DEBUG_STREAM << "[respawn] replicant " << owner->GetEntityID()
<< " un-wrecked + warp (mode "
<< oldMode << "->" << mode << ") at ("
<< owner->localOrigin.linearPosition.x << ","
<< owner->localOrigin.linearPosition.z << ")\n" << std::flush;
}
}