Transformer un dessin de voiture en jeu 3D avec GPT-6 Astra

Turn this hand-drawn sports car into a clean silver GT3 design while preserving the low roofline, long side silhouette, large wheels, wide rear arches and oversized rear wing. Show the entire car in a neutral studio, three-quarter rear-left view, centered with generous margin. Metallic silver paint, dark windows, black wheels, realistic automotive proportions, soft even lighting, plain light-gray background, no text, no logo, no floor reflections.

You are building a complete browser game for me in one go. Produce every file in full, with no placeholders and no “add later” comments. Make sensible decisions when something is ambiguous and keep working until the game is playable.

Build a French browser game called “Néon Poursuite · GT3 Édition Argent”. It is a third-person night racing game set in Tokyo. The player drives a silver GT3 inspired by my approved reference image, escapes the police, weaves through traffic, avoids crashes and survives as long as possible while the score increases.

LANGUAGE
Write this prompt response and all technical explanations in English, but make every visible part of the game French: menus, buttons, tutorial, HUD, missions, pause screen and game-over screen.

TECHNICAL FORMAT
Use vanilla JavaScript and Three.js with ES modules. No framework, bundler or physics engine. Keep all libraries, fonts and game assets local so the finished folder can be hosted as a static website. Provide index.html, style.css, client.js and separate modules for simulation, cars, world, road and audio. Include a small local launch script and a README in French.

PLAYER CAR
Load the approved Higgsfield model from models/player.glb. The game must wait for this model before enabling the start button. Do not replace the player with a generic procedural sports car. Normalize the model on load: align its longest horizontal axis with the road, scale it to about 4.6 metres long, place its wheels on the ground and correct its direction if necessary. Preserve its silver paint and PBR textures. Add separate taillights, underglow and boost flames only when they improve readability.

CONTROLS AND SPEED
Arrow Up or W/Z accelerates. Arrow Down or S brakes. Left and Right or A/Q/D steer. Space activates boost. Escape pauses. Enter starts or restarts. Start the run at 144 km/h, reach about 259 km/h at normal top speed and 360 km/h on boost. Widen the field of view with speed, add subtle camera shake, road streaks and stronger audio so normal speed already feels fast.

GAMEPLAY
Use six traffic lanes. Keep traffic dense but always leave a possible route. Reward high-speed near misses with points, a combo and a little boost. A collision slows the player, resets the combo and lets the police close the gap. Add three police cars behind the player, a visible arrest meter and escalating pressure. The meter should rise mainly when the player is slow and a police car is close. Reaching 100 percent ends the run.

Add curved road sections, three visually distinct Tokyo districts, roadblocks that leave three lanes open and short missions for near misses, cleared roadblocks and survival time. Clearing a roadblock should give points, boost and distance from the police. The score should continuously increase with distance and speed. Store the best score locally.

WORLD AND FEEL
Create a night Tokyo city with wet asphalt, neon signs, buildings, streetlights, rain and distant skyline shapes. Use a treadmill world: keep the player near the origin and recycle the road, traffic and city. Use restrained bloom so only real light sources glow. Generate engine, boost, collision, near-miss and siren sounds with WebAudio after the first user interaction.

PERFORMANCE
Cap the pixel ratio, pool repeated objects, use instancing where useful and avoid creating objects every frame. Add three quality modes in the French options menu: Fluide, Équilibré and Détaillé. Fluide should reduce resolution and expensive effects. Pause automatically when the tab loses focus.

SCREENS
Create a game-native title screen with the silver GT3 visible immediately, the title, a short French description, controls and a clear “Démarrer” button. Add a readable HUD for score, speed, boost, mission and police pressure. The game-over screen must show score, distance and best score with a “Rejouer” button.

VERIFICATION
Write meaningful tests for acceleration, braking, road limits, boost, collisions, near misses, traffic spacing, police pressure, roadblocks, missions and pause. Run them. Then run the game and verify that the real GLB loads, the first screen is usable, keyboard controls respond and no console error blocks play. Finish by listing every created file and the exact command to launch the game locally.