private void updateBob(float deltaTime, float accelX) {
   if (local_bob.state != Bob.BOB_STATE_HIT && local_bob.position.y <= 0.5f)
     local_bob.hitPlatform();
   if (local_bob.state != Bob.BOB_STATE_HIT)
     local_bob.velocity.x = -accelX / 10 * Bob.BOB_MOVE_VELOCITY;
   local_bob.update(deltaTime);
   heightSoFar = Math.max(local_bob.position.y, heightSoFar);
 }