Rally RaidNavigator

• ES module extraction — all physics isolated in src/physics/
• Real gravity (G = −9.81 m/s²) with full Landy re-tune
• Surface contract C6: surfaceAt() returns {grip, roll, label}
• 5×5 km proving ground with 6 surface zones
• Rapier3D rigid body vehicle: chassis + 4 wheels, suspension springs (springK 62000)
• Timer-driven render loop (hidden-tab safe — setInterval + rAF)

Gate probes: static sag 32.9%, corner roll 24°, jump airtime 0.18s, top speed ~151 km/h

• Wired modular physics (P1) into game entry point
• Le Terrible drives autonomously; player navigates
• PilotAI mood state machine: calm → fast chatter → drift → panic
• Navigator waypoint system with cone meshes (yellow/gold/brown) + nudge rings
• Dialogue system: voice line triggers on game events (obstacles, speed, finish)
• Camera follow with velocity-damped yaw, shake accumulation, FOV breathing

• Full instrument panel: Smiths-style gauges (SVG, 240° sweep), Halda tripmeter
• Vehicle systems simulation: water temp, oil temp/pressure, voltage, fuel consumption
• Roadbook scroll with tulip SVGs, hazard labels, distance cones, altitude
• 7 warning lamps (oil, water, fuel, battery, brake, alternator, overheat)
• 5 toggle switches + CTIS panel + compass heading
• Overheat cuts engine power; damage model (engine, radiator, brakes, electrical, steering, suspension)

• Screen system: registerScreen() / gotoScreen() with CSS fade transitions
• SVG Paper Map: grid, corridor, features, start/finish, compass, scale bar
• Tap-to-place waypoints on the map → waypoints feed Nav directly (no RECON step)
• Flow: Splash → Planning (map) → Stage (3D boot deferred until needed)
• Corridor fallback when 0 waypoints placed

• Surface authoring: plateau (grip 0.95), sable (0.84), oued (0.72), roche (0.55), fech-fech (0.38)
• Water fording: wadiDepthAt() with closest-point-on-segment, quadratic blend, drowning ramp
• Bush brush-through: tagged props (no collider), velocity damping on contact
• Distribution: ~69% sand, ~21% plateau, ~8% fech-fech, plus STAGE feature overrides

• Waveguide physical modelling via AudioWorklet — V8 8-cylinder synthesis
• RPM derived from vehicle gear + speed (unified gear ladder per vehicle type)
• Fallback chain: AudioWorklet → sample ladder (25 WAVs) → procedural oscillators
• LPF at 3200 Hz, shift blip envelope on upshift
• Surface crunch, wind, impact, backfire layers coded (disabled pending tuning)

• Camera preset system: Classic, Rally (h24/b18/fov48), Overview (h38/b22/fov42)
• Speed-reactive FOV, airtime hold, velocity-damped yaw follow
• Time-of-day wiring (?tod=0..1, 0=dawn, 0.5=noon, 1=sunset)
• Forge Gate 1 audit pass: trunk palette lift v1 → v2

W1 — R4 Sinpar Hero Vehicle

• CONFIG.r4: mass 820, springK 25500, enginePower 7000, gearKmh [2,16,38,65,95]
• Vehicle selector via ?veh= URL param

W2 — Jump/Landing + Rollover Recovery

• Landing damper: extra rebound after >0.4s airtime
• Air auto-level: body-up → world-up alignment, input-gated per axis
• Flop recovery: stuck-on-side detect (75°, 3s), _rightCar() uprights in place

W3 — Deep Sand + STUCK Machine

• Sand physics: vFloat 45 km/h, dragK 0.30, fesh-fech ×2
• State machine: FREE → BOGGED (rocking) → DIGGING (E-hold, 75s cooldown)

W4 — 31-Team Field Simulation

• All 31 NPC crews from the 1977 Engagés bulletin, racing in real-time (2 Hz seeded tick)
• Staggered starts (12s × number order), encounter HUD (<60m), E=AIDER rescue
• Standings by net time, relations tracked both ways

W5 — Pilot Behavior

• Dune commit, crest discipline, rookie errors, morale/obedience systems

W6 — Incidents

• OVERHEAT, LOST, STUCK, TOW + camion-balai ASA fallback

Vehicle Fleet Overhaul (Session 3)

• 7 vehicles remapped to all-low-poly GLBs (40 MB photogrammetry scans retired)
• livery.js palette-driven vertex-color bake pipeline
• Per-vehicle .vehicle.json canonical specs with real gravity (9.81)
• NPC 180° heading fix (all models face −Z at identity)
• Truck STL Z-up orientation fix (Y-longest-axis detection)

Deep Audit (∼30 findings fixed)

• Double frame loop eliminated (interval yields when rAF alive)
• Field: rescuer-ahead teleport fixed, divert self-release (240s), seeded RNG per team-tick
• Vehicle: sand-drag clamped, brake scales with input, landing damper rebound-only
• HUD: digitStrip built once + mutates on change (was ~3000 nodes/s), roadbook cached

• Two voice packs: VF (Le Terrible — Michou/NAV, fr-FR) and VQ (Abitibi Express — Ti-Guy/Réal, fr-CA with ?crew=vq)
• Dialogue engine rewritten: mood gates [calm/hot/panic/fatigue], trust gates (>0.6 / <0.4)
• Draw-without-replacement per pool, reset per stage, one live bubble per side
• BD phylactères: white ovals (Nunito 700/900), SHOUT = Bangers starburst (two-layer clip-path star), sulky = dashed border
• Pilot-LEFT / nav-RIGHT positioning, projected each frame to hug the car
• Reading time: max(3.5s, 1.5s + 65ms/char)
• Set-pieces: roman-photo overlay, click-to-advance, trust deltas on exit
• bold markdown parsing → <b> tags

• Five specials: SS1 Nfis (22 km), SS2 Azzadene (38 km), SS3 Tichka (28 km), SS4 Gorges-Reg (48 km), SS5 Hamada (32 km)
• Per-day terrain overrides applied to both config objects (two-config trap: height.js reads src/config.js)
• Rally state in localStorage: per-day times, penalties, relations, incidents, parts (3), carried damage, pilot learning
• Bivouac screen: étape + général classifications, repair spending parts, journal entries
• Day 5 → ARRIVÉE FINALE + rank + NOUVEAU RALLYE (clearRally())
• Real DEM landscapes for all 5 stages (276 SRTM tiles): J1 datum 846m, J5 datum 1441m, vScale 0.5–0.65
• Boot shows « Chargement du relief réel… »; procedural fallback on failure
• Hero default = r4 (Chastel 4L Sirocco, équipage n° 22)

• 5 stage datasets boot-verified (SS3 fech-fech zone, SS4 21 roadbook rows, SS5 crisis + flat hamada)
• Roadbook/tulip fix: nearestFeature read f.x/f.z (always NaN — hazards NEVER fired since P3) → featurePos() helpers
• Narrative beats: J1 tutorial overheat (km 16.5), J5 mechanical crisis (km 26 → OVERHEAT = stop+cool vs press-on)
• Set-pieces wired once-per-rally: pas_perdus on first DIGGING, gue_de_trop on drowned, pourquoi at bivouac J2, réconciliation at bivouac J4 if day rank ≤12
• Goat gag seeded per stage (60–240s, stage-stable)
• Canon update: pilot = Jean-Michel « Michou », NPC n° 22 = Lemoine/Davoust, player = n° 34 (VF) or n° 36 (VQ)

M1 — Shell + Rocks

• Forge UI: tabs (rocks | vegetation | ruins | vehicles | scatter), OrbitControls viewport
• Rock generators: boulder, scree, mesa, arch — all deterministic, validator-green
• Seeded RNG (mulberry32), recipe format, GLB export pipeline
• Gate 1: 7 findings, all closed (validator --regen, bbox ±1%, arch caps)

M2 — Vegetation + Ruins

• Palm (408 tris, phyllotaxis), acacia (228 tris), scrub (60 tris), tuft (7 tris)
• Ruins: wall slab, archway, column, crenellated, plank bridge (60–300 tris each)
• Gate 2: 6 findings, all closed (erodeTop fix, umbrella W/H, palette v2 lift)

M2.5b — Full Reference Import

• 120 imported entries (17 Quaternius + 62 BV + 41 CP) + 13 procedural
• DAE parser (Collada, Z-up), FBX parser, height-based trunk/canopy coloring
• 30/30 --regen green on palette atlas-v2

• 4 archetypes: twobox, roundedHatch, pickup, cabover
• Loft algorithm: cross-section polygon → swept surface
• Accessories: roofRack, spare, jerryCans, lampPods, bullBar, sandLadders, flag, exhaustStack
• Livery zones: body paint, stripe band, glass, bumper, roof
• Contract: .vehicle.json stub export, registerSplitVehicle() round-trip