Function updateAI

examples/kart-racer/main.ts:152–171

(kart: Kart, dt: number)

}

function updateAI(kart: Kart, dt: number): void {
  if (kart.finished || !raceStarted) return;

  const target = checkpoints[kart.targetCheckpoint];
  const dx = target.x - kart.x;
  const dz = target.z - kart.z;
  const targetAngle = Math.atan2(dz, dx);

  let angleDiff = targetAngle - kart.angle;
  while (angleDiff > Math.PI) angleDiff = angleDiff - Math.PI * 2;
  while (angleDiff < -Math.PI) angleDiff = angleDiff + Math.PI * 2;

  const steer = clamp(angleDiff * 3.0 + kart.steerBias, -TURN_SPEED, TURN_SPEED);

  // AI always accelerates, brakes on sharp turns
  let accel = ACCEL * 0.85;
  if (Math.abs(angleDiff) > 0.5) accel = accel * 0.5;

  updateKartPhysics(kart, dt, accel, steer);
}

function getPlacement(): number {
  // Sort by laps then checkpoints, player is karts[0]