void TWorld::ProcessShips() {
    QVector<TShip> newShips;
    newShips.reserve(Ships.size());

    for (size_t i = 0; i < (size_t)Ships.size(); ++i) {
        TShip& ship = Ships[i];
        QPointF v1 = Rule1(i);
        QPointF v2 = Rule2(i);
        QPointF v3 = Rule3(i);
        QPointF v4 = Rule4(i);
        QPointF v5 = Rule5(i);
        ship.Speed = ship.Speed + v1 + v2 + v3 + v4 + v5;
        LimitSpeed(ship.Speed);

        ship.Position += ship.Speed;
        if (!ProcessCollision(ship) &&
            ship.Position.x() >= 0 && ship.Position.x() < WORLD_WIDTH &&
            ship.Position.y() >= 0 && ship.Position.y() < WORLD_HEIGHT)
        {
            newShips.push_back(ship);
        }
    }
    Ships.swap(newShips);
}