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#88 part 2: the central coolant pull-through -- HeatSink::DrawCoolant was a

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return-0 stub; the Reservoir BAR now drops when a damaged mech leaks

The user watched the coolant panel's level bar during the leak bench and it
never moved -- correctly: a leaking subsystem drained only its own loop,
because the slot-14 top-up (DrawCoolant) was stubbed.  Disassembled the real
base @0x4add00: the draw RECURSES UP the sink linkage, scaling by
coolantFlowScale@0x15C per hop, terminating at the Reservoir's supply
(@0x4af3b0 -- clamp to [0, coolantLevel], drain the tank, return granted --
already faithfully ported as Reservoir::DrawCoolant).  The binary's terminal
hop is the bank's slot-14 override @0x4ae8b0 resolving its reservoir
connection @0x1D8 (the port's 'helper' member -- not vestigial after all);
the port's existing Reservoir-ctor Attach + Reservoir override terminate the
same chain equivalently (the extra bank hop scales by ctor-default 1.0).

Implemented the base recursion (null-guarded -- the binary calls through the
resolved link unguarded; authored topology always links) + a BT_COOL_LOG
[resdraw] probe at the supply.

Verified live: a destroyed myomer's damage leak pulled the central tank
6.0 -> 5.58 over ~30s ([resdraw] granted lines) -- Reservoir/CoolantMass,
the cockpit coolant bar, now visibly drops as a damaged mech bleeds
coolant, and DeathReset refills it on respawn.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019Zh7PTkFy4KwTzVighLR9J
This commit is contained in:
Joe DiPrima
2026-07-31 08:47:55 -05:00
co-authored by Claude Fable 5
parent a8a0042f28
commit 31552c0444
3 changed files with 41 additions and 9 deletions
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context/subsystems.md
+12 -4
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@@ -180,10 +180,18 @@ disarmed, and the #64 full de-shadow sweep remains the long-term cleanup. Verif
rattle and weapon crits (`[critroll]`) both drive `[cool]` leak lines (draw ≈ dmg×heatLoad, level
draining, hysteresis arming). **Authored damage routing** (BTL4.RES): collision rattle targets
HeatSinkBank 0.3 / Gyro 0.35 / Torso 0.25 / Myomers 0.35 — Condenser + Reservoir are authored 0
for collisions; weapon crits select via the ZONE's crit-entry list. Remaining fidelity item:
`HeatSink::DrawCoolant` (vtable slot 14, the central-system top-up) is still a `return 0` TODO, so
a leaking subsystem drains its own loop; the pull-through to the central Reservoir gauge rides the
loop-flow machinery.
for collisions; weapon crits select via the ZONE's crit-entry list.
**The central pull-through is ALSO live (same day):** `HeatSink::DrawCoolant` was a `return 0`
stub; the real base @0x4add00 (disassembled) RECURSES UP the sink linkage — `return
resolve(linkedSinks)->DrawCoolant(requested × coolantFlowScale@0x15C)` — terminating at the
Reservoir's supply (@0x4af3b0, already faithfully ported as `Reservoir::DrawCoolant`: clamp to
[0, coolantLevel], drain, return granted). Binary terminal hop = the bank's slot-14 override
@0x4ae8b0 resolving its reservoir connection @0x1D8 (the port's `helper` member — NOT vestigial);
the port terminates equivalently via the Reservoir-ctor Attach into the bank's `linkedSinks` +
the Reservoir override (the extra bank hop scales by its ctor-default flowScale 1.0 — a no-op).
Verified live (`[resdraw]`): a destroyed myomer's leak pulled the central Reservoir tank
6.0 → 5.58 over ~30 s — **`Reservoir/CoolantMass`, the cockpit coolant BAR, now visibly drops
as a damaged mech bleeds coolant**, and DeathReset refills it on respawn.
## The coolant FLUSH (Gitea #7, 2026-07-19) — Reservoir InjectCoolant end-to-end [T2 live-verified]
The manual-p24 coolant button (coolant MFD top-right; punch or HOLD): message id **4 "InjectCoolant"**