给我一份基于qt的贪吃蛇代码

好的，以下是一份基于Qt的贪吃蛇代码：

#include <QApplication>
#include <QMainWindow>
#include <QTimer>
#include <QKeyEvent>
#include <QPainter>

class Snake : public QMainWindow {
public:
    Snake() {
        setFixedSize(400, 400);
        m_timer = new QTimer(this);
        connect(m_timer, SIGNAL(timeout()), this, SLOT(move()));
        m_timer->start(100);
        m_snake.append(QPoint(width() / 2, height() / 2));
        m_snake.append(QPoint(width() / 2, height() / 2 + 10));
        m_snake.append(QPoint(width() / 2, height() / 2 + 20));
    }

    void paintEvent(QPaintEvent *event) {
        QPainter painter(this);
        painter.fillRect(rect(), Qt::black);
        painter.setPen(Qt::white);
        painter.setBrush(Qt::green);
        for (int i = 0; i < m_snake.size(); i++) {
            painter.drawRect(m_snake[i].x(), m_snake[i].y(), 10, 10);
        }
        painter.setBrush(Qt::red);
        painter.drawRect(m_food.x(), m_food.y(), 10, 10);
    }

    void keyPressEvent(QKeyEvent *event) {
        if (event->key() == Qt::Key_Left) {
            m_direction = QPoint(-10, 0);
        } else if (event->key() == Qt::Key_Right) {
            m_direction = QPoint(10, 0);
        } else if (event->key() == Qt::Key_Up) {
            m_direction = QPoint(0, -10);
        } else if (event->key() == Qt::Key_Down) {
            m_direction = QPoint(0, 10);
        }
    }

public slots:
    void move() {
        QPoint head = m_snake.first();
        head += m_direction;
        m_snake.prepend(head);
        if (head == m_food) {
            m_food = QPoint(qrand() % (width() / 10) * 10, qrand() % (height() / 10) * 10);
        } else {
            m_snake.removeLast();
        }
        if (head.x() < 0 || head.x() >= width() || head.y() < 0 || head.y() >= height()) {
            m_timer->stop();
            QMessageBox::information(this, "Game Over", "You hit the wall!");
        }
        for (int i = 1; i < m_snake.size(); i++) {
            if (head == m_snake[i]) {
                m_timer->stop();
                QMessageBox::information(this, "Game Over", "You hit yourself!");
            }
        }
        update();
    }

private:
    QList<QPoint> m_snake;
    QPoint m_direction = QPoint(0, -10);
    QPoint m_food = QPoint(qrand() % (width() / 10) * 10, qrand() % (height() / 10) * 10);
    QTimer *m_timer;
};

int main(int argc, char *argv[]) {
    QApplication a(argc, argv);
    Snake s;
    s.show();
    return a.exec();
}

希望这份代码对你有帮助！