function getCalculatedBallSpeed(value) {
  return value * ballBodyVelocityModifier;
}

function ballHits(_ball, _mainPlatform){
    var dif = 0;
    
    if (_ball.x < _mainPlatform.x)
    {
  diff = _mainPlatform.x - _ball.x;
  _ball.body.velocity.x = getCalculatedBallSpeed(-10 * diff);
    }
    else if(_ball.x > _mainPlatform.x)
  {
   diff = _ball.x - _mainPlatform.x;
   _ball.body.velocity.x = getCalculatedBallSpeed(10 * diff);
  }
    
    else
    {
  _ball.body.velocity.x = getCalculatedBallSpeed(2 + Math.random() * 8);
    }
}