if (keys['ArrowLeft']) car.angle -= car.turnSpeed * (car.speed / car.maxSpeed); if (keys['ArrowRight']) car.angle += car.turnSpeed * (car.speed / car.maxSpeed);

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// constants (arcade drift physics) const ENGINE_FORCE = 0.38; const BRAKE_FORCE = 0.65; const HAND_BRAKE_DRIFT = 0.92; // extra slide when handbrake const TURN_RESPONSIVENESS = 0.09; const DRIFT_TURN_FACTOR = 1.4; const FRICTION_AIR = 0.98; const FRICTION_GROUND = 0.96; const MAX_SPEED = 16.5; const REVERSE_MAX = 5.5; const DRIFT_ANGLE_THRESHOLD = 0.18; // radians (~10 deg) to count as drift const MIN_SPEED_FOR_DRIFT = 2.2;