arcattackandClaude Fable 5
8ed6184d65
The recovered system: fire channels = LBE4ControlsManager buttonGroups (0x40/0x45/0x46/0x47); default groups = the per-mech type-6 controls-map resource in BTL4.RES, installed by the T0 CreateStreamedMappings the port already called -- it needed only the TriggerState attribute (id 0x13 PINNED to the binary value; fireImpulse@0x31C is the binary's TriggerState) and an input feed. Keyboard/harness now push press/release edges into the button groups; the gBT*Trigger bypasses, per-type keyboard split and 1,0 pulse hack are retired -- weapons sharing a button fire TOGETHER (madcat Trigger = 4 weapons). Myomers @4b9550/@4b95b8 misattribution corrected (they are MechWeapon ConfigureMappables/ChooseButton). Verified 2-node: kill through the authentic chain (12 hits vs ~36 pre-groups). Config-mode session (regrouping UI) = the remaining stage, KB-scoped. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
89 lines
9.1 KiB
Markdown
89 lines
9.1 KiB
Markdown
# Direct gyro crunch kicks: mech master performance FUN_004a9b5c (@4aa254/@4aa288 = alternate-gait engage jolt; @4aa342 = engaged-gait 0.4s rumble; @4aa81e/@4aa86c = crushable-icon crunch in the ground/collide response) + ProjectileWeapon::FireWeapon @4bc104 (@4bc194 = firing recoil kick). Verified NO gyro calls in the blocking-hit branch (@4aa88a-4aab5f) and NO kick in MissileLauncher::FireWeapon @4bcc60.
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## semantics
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CONTAINER 1: FUN_004a9b5c = Mech master per-frame performance, cdecl(Mech *this[ebp+8] -> ebx, Scalar dt[ebp+0xc]). edi = *(mech+0x128) = controls-mapper subsystem (port: controlSource / controlsMapper, subsystemArray[0]). gyro = mech+0x528 (port: gyroSubsystem).
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=== BLOCK 1 (@4aa158-4aa2be): alternate-gait toggle + ENGAGE JOLT (sites @4aa254 + @4aa288) ===
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if (airborneCycleRate@0x5bc != -1.1f) { // fcomp const @0x4ab174 = 0xbf8ccccd = -1.1f; == -1.1 -> skip whole toggle ("mech has no alternate cycle rate" sentinel)
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if (legCycleSpeed@0x348 > 0.0f // fcomp @0x4ab178 = 0.0f
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&& controlsMapper->speedDemand@+0x128 < 0.0f) { // [edi+0x128] fcomp 0.0, jae -> disengage
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if (airborneSelect@0x3f4 == 0) { // RISING EDGE only
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airborneSelect = 1;
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RequestActionFlags(0x100); // FUN_004a4c54(this, 0x100)
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forwardCycleRate@0x344 = airborneCycleRate@0x5bc;
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if (gyro@0x528) {
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Scalar r = RandomUnit(); // FUN_00408050, [0,1)
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if (RandomUnit() > 0.5f) r = -r; // const @0x4ab170 = 0.5f (random sign)
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// dir = (0, 0, r) -- Z-axis, random magnitude+sign
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Gyroscope::ApplyDamageTorque (gyro, 0,0,r, 0.4f); // call @4aa254 -> 4b2de4, mag 0x3ecccccd
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Gyroscope::ApplyDamageImpulse(gyro, 0,0,r, 0.4f); // call @4aa288 -> 4b2d8c, SAME vec
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}
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}
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} else { // @4aa292 falling edge
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if (airborneSelect@0x3f4) { airborneSelect = 0; RequestActionFlags(0x100);
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forwardCycleRate@0x344 = groundCycleRate@0x5b8; }
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}
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}
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SEMANTIC FLAG [T3]: the engage gate is (cycling && speedDemand < 0); by the port's own convention (negative demand = reverse throttle, mech4.cpp:2009) 0x3f4 reads as a REVERSE-gait select, so mech.hpp's names airborneSelect@0x3f4 / airborneCycleRate@0x5bc are suspect misnomers. Mechanics above are exact [T1] regardless of the name.
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=== BLOCK 2 (@4aa2be-4aa365): ENGAGED-GAIT RUMBLE (site @4aa342) ===
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if (airborneSelect@0x3f4 && legCycleSpeed@0x348 > walkStrideLength@0x534 && gyro@0x528) {
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if (*(Scalar*)&this->0x5c4 > 0.0f) *(Scalar*)&this->0x5c4 -= dt; // countdown, [ebp+0xc]
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else { Gyroscope::ApplyDamageImpulse(gyro, 0,1,0, 0.2f); // call @4aa342, dir=(0,1,0)=up, mag 0x3e4ccccd
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*(Scalar*)&this->0x5c4 = 0.4f; } // period reset 0x3ecccccd @4aa347
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}
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FLAG: mech.hpp declares 0x5c4 as `int clipLoadGuard` -- the binary uses it here as a FLOAT rumble-period timer (mis-typed; needs a Scalar member).
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=== BLOCK 3 (@4aa76c-4aa885): CRUSHABLE-ICON CRUNCH (sites @4aa81e + @4aa86c) -- the mech4.cpp:3310 dormant comment ===
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Runs in the ground/collide response policy, ONLY on the sentinel branch:
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if (dmg.damageAmount == 0.00123f) { // fcomp const @0x4ab180 = 0x3aa137f4 (crushable-CulturalIcon walk-through sentinel)
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worldLinearVelocity = savedWorldVel; localOrigin.linearPosition = savedPos; // restore POST-SNAP saves
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MoveCollisionVolume(); // vtbl+0x34
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dmg.damageAmount = 0.0f;
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if (gyro@0x528) {
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Vector3D n = Normalize(dmg.damageForce); // FUN_004087f4 on Damage+8; damageForce = DELTA worldLinearVelocity across the bounce, filled by engine Mover::ProcessCollisionList (MOVER.cpp:1299 `damage->damageForce.Subtract(worldLinearVelocity, initial_velocity)`) -- i.e. the bounce-impulse direction ("the 0.4*normal")
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Gyroscope::ApplyDamageTorque (gyro, n.x,n.y,n.z, 0.4f); // call @4aa81e, mag 0x3ecccccd
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Gyroscope::ApplyDamageImpulse(gyro, 0,1,0, 0.2f); // call @4aa86c, up, mag 0x3e4ccccd
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}
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AlarmIndicator::SetLevel(mech+0x450 /*heatAlarm*/, 0); // FUN_0041bbd8 @4aa87d -- existing tail, not gyro
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goto end; // jmp 4aab5f
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}
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The BLOCKING branch (damageAmount > 0.0, @4aa88a-4aab5f) has NO gyro calls (verified: only 41bbd8/408440/420ea4/4a7fc4/4a4c54 crash-anim calls). Caveat: FUN_004087f4 divides by |v| UNGUARDED -- if Delta-v ~= 0 the original NaN'd too; a Small_Enough guard is a flaggable deviation.
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CONTAINER 2: ProjectileWeapon::FireWeapon @4bc104 (vtable slot 18 / +0x48 in vtable 0x51242c; `this` = weapon [ebp+8] -> ebx; owner mech = [ebx+0xd0]).
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=== BLOCK 4 (@4bc136-4bc19c): FIRING RECOIL KICK (site @4bc194) ===
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if (HeatModelActive()) // FUN_004ad7d4(this); gates ONLY the heat add
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currentHeat@0x1c8 += heatPerShot@0x3d8;
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Mech *m = owner@0xd0;
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if (damageData.damageAmount@0x3ac > 3.0f // const @0x4bc3f4 = 3.0f (Damage embedded @0x3A8: type@0x3A8, amount@0x3AC)
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&& m->gyroSubsystem@0x528) {
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Gyroscope::ApplyDamageImpulse(gyro, 0.0f, 0.6f, -1.5f, // dir consts 0x3f19999a / 0xbfc00000
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damageData.damageAmount * 0.0625f); // mag = amount/16, const @0x4bc3f8
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}
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then tracerCounter@0x408++, tracer modulo tracerInterval@0x438, matrix/muzzle spawn path... The kick precedes ammo consumption in the binary (no early-out before it). MissileLauncher::FireWeapon @4bcc60 does NOT chain to @4bc104 and has NO gyro kick (grep: no 0x528/FUN_004b2d8c refs; it uses +0x3ac only as per-missile damage).
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## call_args
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- placeholder
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## port_integration
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All target methods exist byte-exact in game/reconstructed/gyro.cpp (ApplyDamageImpulse @691, ApplyDamageTorque @706; signatures (Scalar x, Scalar y, Scalar z, Scalar magnitude) -- match the binary 5-dword cdecl frames). Access pattern: mech.hpp:422 `Subsystem *gyroSubsystem; // @0x528`; either include gyro.hpp and static_cast<Gyroscope*>, or follow the existing complete-type bridge pattern (extern GyroFrameJointWrite, declared mech4.cpp:3166, defined gyro.cpp:487) with e.g. GyroApplyDamageImpulse/Torque(Subsystem*, Scalar,Scalar,Scalar,Scalar) bridges in gyro.cpp -- the bridge avoids the databinding trap and matches house style.
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(1) CRUSHABLE-ICON CRUNCH (@4aa81e/@4aa86c) -> game/reconstructed/mech4.cpp:3304-3315, inside Mech::AuthenticGroundAndCollide's `if (dmg.damageAmount == 0.00123f)` branch, REPLACING the dormant comment at mech4.cpp:3310. Exact insertion (after `dmg.damageAmount = 0.0f;`, before the GroundLog):
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if (gyroSubsystem) {
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Vector3D n; n.Normalize(dmg.damageForce); // FUN_004087f4; damageForce already filled by engine Mover::ProcessCollisionList (engine/MUNGA/MOVER.cpp:1299)
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GyroApplyDamageTorque (gyroSubsystem, n.x, n.y, n.z, 0.4f); // @4aa81e
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GyroApplyDamageImpulse(gyroSubsystem, 0.0f, 1.0f, 0.0f, 0.2f); // @4aa86c
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}
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dmg.damageForce needs no new plumbing -- ProcessCollisionList at mech4.cpp:3302 is the engine method that writes it. Do NOT add a kick to the blocking-hit branch (mech4.cpp:3316+) -- binary-verified none exists.
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(2) ALTERNATE-GAIT ENGAGE JOLT + RUMBLE (@4aa254/@4aa288/@4aa342) -> mech4.cpp local-drive path, immediately BEFORE the channel advance at mech4.cpp:2056-2058 (`adv = AdvanceBodyAnimation(dt, 1); legAdv = AdvanceLegAnimation(dt);`) -- the binary runs these two blocks (@4aa158-4aa365) directly before its IsDisabled + AdvanceLegAnimation sequence (@4aa365-4aa399). All gate members exist in mech.hpp (airborneSelect, forwardCycleRate@0x344, legCycleSpeed@0x348, walkStrideLength@0x534, groundCycleRate@0x5b8, airborneCycleRate@0x5bc, RequestActionFlags @004a4c54); speedDemand is already read as controlsMapper->speedDemand at mech4.cpp:2008. Two fixes needed: (a) the port currently has NO writer of airborneSelect -- this block IS the authentic writer (engage: legCycleSpeed>0 && speedDemand<0 && airborneCycleRate != -1.1f, +RequestActionFlags(0x100) +forwardCycleRate switch on BOTH edges); (b) mech+0x5c4 is declared `int clipLoadGuard` in mech.hpp:662 -- the binary uses it as a Scalar rumble timer here (add/re-type a Scalar member, e.g. gyroRumbleTimer). RandomUnit exists (dmgtable.cpp:86 RandomUnit / projweap.cpp:486 UniformRandom = FUN_00408050).
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(3) FIRING RECOIL KICK (@4bc194) -> game/reconstructed/projweap.cpp:603 ProjectileWeapon::FireWeapon, at the TOP (binary order: heat add, then kick, then tracer/spawn -- i.e. insert after Check(this), before ConsumeRound()):
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if (damageData.damageAmount > 3.0f && owner) { // damageData @0x3A8 (mechweap.hpp:326), amount @0x3AC
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Subsystem *g = ((Mech *)owner)->gyroSubsystem; // owner @0xd0 -> mech+0x528
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if (g) GyroApplyDamageImpulse(g, 0.0f, 0.6f, -1.5f, damageData.damageAmount * 0.0625f);
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}
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(Placing it before ConsumeRound matches the binary exactly; the binary has no early-out before the kick.) Do NOT add the kick to MissileLauncher::FireWeapon (mislanch.cpp @4bcc60) -- binary-verified it has none. The binary's heat add ([+0x3d8] -> [+0x1c8] gated by FUN_004ad7d4/HeatModelActive) precedes the kick; if the port's FireWeapon lacks it, that is a separate (pre-existing) gap, not part of this hook.
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confidence: high
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