dazdadza

void MainWindow::keyPressEvent(QKeyEvent *event)
{
    switch (event->key()){
          case Qt::Key_Right:
              if(_plateform->pos().rx()<250){
                  _plateform->moveBy(10,0);
              }

     break;
          case Qt::Key_Left:
         if(_plateform->pos().rx()>-240){
             _plateform->moveBy(-10,0);
         }
     break;
    case  Qt::Key_Space:
        if( _flagBalllsMoving == false){
        this->startBallAnimation();
        }

      this->update();

 }
}