first commit

.clang-format

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+---
+# clang-format version : 16.0.2
+# 从不用tab，使用空格
+UseTab: Never
+# 所有的括号都展开到下一行
+BreakBeforeBraces: Allman
+# 行的宽限制
+ColumnLimit: 100
+# 参数对齐
+AlignAfterOpenBracket: Align
+# 赋值数组左对齐
+AlignArrayOfStructures: Left 
+# 下面两行要搭配使用
+# 换行运算符对齐
+AlignOperands: AlignAfterOperator
+BreakBeforeBinaryOperators: NonAssignment
+# 注释对齐
+AlignTrailingComments:
+  Kind: Always
+  OverEmptyLines: 0
+# 每个参数占一行,下面两行都是这个意思，一个是声明的一个是用的
+AllowAllArgumentsOnNextLine: false
+AllowAllParametersOfDeclarationOnNextLine: false
+# 作用域东西太少也不用合并,下面两行都是这个意思
+AllowShortFunctionsOnASingleLine: None
+AllowShortLambdasOnASingleLine: None 
+#  这个是中继返回值的
+AlwaysBreakAfterReturnType : None
+# template分行
+AlwaysBreakTemplateDeclarations: Yes
+# 参行分行，下面两行都是这个意思
+BinPackArguments: false 
+BinPackParameters: false
+# 要看官网了
+BreakAfterAttributes: Always
+# 初始化的时候，值的左右添加空格
+Cpp11BracedListStyle: false 
+# class 中的 public private 等等将有缩进
+IndentAccessModifiers: true 
+# case 将有缩进
+IndentCaseLabels: true 
+# 头文件的等号将有缩进
+IndentPPDirectives: BeforeHash 
+# requires 分行
+IndentRequiresClause: false 
+# 缩进的宽度
+IndentWidth: 4
+# namespace 将有缩进
+NamespaceIndentation: All
+# obc block 将有缩进
+ObjCBlockIndentWidth: 4
+# constructor init 将单独一行
+# PackConstructorInitializers: Never
+# 不同块之间添加一行空白行
+SeparateDefinitionBlocks: Always 

.gitignore

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+build

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.5)
+
+project(SnakeGame VERSION 0.1 LANGUAGES CXX)
+
+set(CMAKE_AUTOUIC ON)
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets Network)
+find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets Network)
+
+set(PROJECT_SOURCES
+        main.cpp
+        GameShowWidget.h
+        SnakeGameWidget.h
+)
+
+if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
+    qt_add_executable(SnakeGame
+        MANUAL_FINALIZATION
+        ${PROJECT_SOURCES}
+    )
+# Define target properties for Android with Qt 6 as:
+#    set_property(TARGET SnakeGame APPEND PROPERTY QT_ANDROID_PACKAGE_SOURCE_DIR
+#                 ${CMAKE_CURRENT_SOURCE_DIR}/android)
+# For more information, see https://doc.qt.io/qt-6/qt-add-executable.html#target-creation
+else()
+    if(ANDROID)
+        add_library(SnakeGame SHARED
+            ${PROJECT_SOURCES}
+        )
+# Define properties for Android with Qt 5 after find_package() calls as:
+#    set(ANDROID_PACKAGE_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/android")
+    else()
+        add_executable(SnakeGame
+            ${PROJECT_SOURCES}
+        )
+    endif()
+endif()
+
+target_link_libraries(SnakeGame PRIVATE Qt${QT_VERSION_MAJOR}::Widgets Qt${QT_VERSION_MAJOR}::Network)
+
+# Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1.
+# If you are developing for iOS or macOS you should consider setting an
+# explicit, fixed bundle identifier manually though.
+if(${QT_VERSION} VERSION_LESS 6.1.0)
+  set(BUNDLE_ID_OPTION MACOSX_BUNDLE_GUI_IDENTIFIER com.example.SnakeGame)
+endif()
+set_target_properties(SnakeGame PROPERTIES
+    ${BUNDLE_ID_OPTION}
+    MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
+    MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
+    MACOSX_BUNDLE TRUE
+    # WIN32_EXECUTABLE FALSE
+    WIN32_EXECUTABLE TRUE
+)
+
+include(GNUInstallDirs)
+install(TARGETS SnakeGame
+    BUNDLE DESTINATION .
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)
+
+if(QT_VERSION_MAJOR EQUAL 6)
+    qt_finalize_executable(SnakeGame)
+endif()
+
+message("QT_VERSION_MAJOR: ${QT_VERSION_MAJOR}")
+message("QT_VERSION: ${QT_VERSION}")
+message("BUILD_ID_OPTION: ${BUNDLE_ID_OPTION}")

GameShowWidget.h

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+
+#pragma once
+
+#include <QLabel>
+#include <QLineEdit>
+#include <QMessageBox>
+#include <QPushButton>
+#include <QStackedWidget>
+#include <QVBoxLayout>
+#include <QWidget>
+#include <qgridlayout.h>
+
+#include "SnakeGameWidget.h"
+
+class GameShowWidget : public QWidget
+{
+        Q_OBJECT;
+
+    public:
+        GameShowWidget(QWidget *parent = nullptr) : QWidget(parent)
+        {
+            layout = new QVBoxLayout();
+
+            gameTopLayout = new QHBoxLayout();
+            gameScoreNameLabel = new QLabel("得分:");
+            gameScoreNumLabel = new QLabel("0");
+            gameStartGameButton = new QPushButton("开始游戏");
+            gameSettingButton = new QPushButton("游戏设置");
+            gameHelpButton = new QPushButton("帮助");
+
+            // 取消键盘焦点
+            gameStartGameButton->setFocusPolicy(Qt::NoFocus);
+            gameSettingButton->setFocusPolicy(Qt::NoFocus);
+            gameHelpButton->setFocusPolicy(Qt::NoFocus);
+
+            gameTopLayout->addWidget(gameScoreNameLabel);
+            gameTopLayout->addWidget(gameScoreNumLabel);
+            gameTopLayout->addStretch();
+            gameTopLayout->addWidget(gameStartGameButton);
+            gameTopLayout->addWidget(gameSettingButton);
+            gameTopLayout->addWidget(gameHelpButton);
+
+            gameArea = new SnakeGameWidget(this);
+            layout->addLayout(gameTopLayout);
+            layout->addWidget(gameArea);
+
+            connect(gameStartGameButton,
+                    &QPushButton::clicked,
+                    this,
+                    [=]()
+                    {
+                        QString str = gameStartGameButton->text();
+                        if (str == "开始游戏")
+                        {
+                            changeGameMode(0);
+                        }
+                        else
+                        {
+                            changeGameMode(1);
+                        }
+                    });
+            connect(gameHelpButton,
+                    &QPushButton::clicked,
+                    this,
+                    [=]()
+                    {
+                        QMessageBox::information(
+                            this,
+                            "帮助",
+                            "按方向键控制蛇的移动，吃到食物得分，撞到墙壁或者自己结束游戏\n游戏开始"
+                            "前请调整合适的窗口大小，游戏布局随窗口大小变化\n游戏设置可以设置速度大小");
+                    });
+
+            connect(gameSettingButton,
+                    &QPushButton::clicked,
+                    [=]()
+                    {
+                        changeGameMode(1);
+                        QDialog dialog(this);
+
+                        QGridLayout dialogGridLayout;
+
+                        QLabel dialogBottomLabel("游戏速度(1-1000):");
+                        QLineEdit dialogBottomLineEdit;
+                        dialogBottomLineEdit.setText(QString::number(gameArea->getSpeed()));
+                        dialogGridLayout.addWidget(&dialogBottomLabel, 0, 0);
+                        dialogGridLayout.addWidget(&dialogBottomLineEdit, 0, 1);
+
+                        QPushButton dialogEnsureButton("确定");
+                        QPushButton dialogCancelButton("取消");
+                        dialogGridLayout.addWidget(&dialogEnsureButton, 1, 0);
+                        dialogGridLayout.addWidget(&dialogCancelButton, 1, 1);
+
+                        connect(&dialogEnsureButton,
+                                &QPushButton::clicked,
+                                [&]()
+                                {
+                                    bool ok;
+                                    int speed = dialogBottomLineEdit.text().toInt(&ok);
+                                    if (!ok)
+                                    {
+                                        QMessageBox::warning(this, "警告", "速度请输入数字");
+                                        return;
+                                    }
+
+                                    if (!(speed <= 1000 && speed >= 1))
+                                    {
+                                        QMessageBox::warning(this, "警告", "速度范围为1-1000");
+                                        return;
+                                    }
+                                    gameArea->setSpeed(speed);
+                                    dialog.close();
+                                });
+
+                        connect(&dialogCancelButton,
+                                &QPushButton::clicked,
+                                [&]()
+                                {
+                                    dialog.close();
+                                });
+
+                        dialog.setLayout(&dialogGridLayout);
+
+                        dialog.exec();
+                    });
+
+            connect(gameArea,
+                    &SnakeGameWidget::gameOver,
+                    this,
+                    [=]()
+                    {
+                        changeGameMode(1);
+                    });
+            connect(gameArea,
+                    &SnakeGameWidget::getScore,
+                    [=](int score)
+                    {
+                        gameScoreNumLabel->setText(QString::number(score));
+                    });
+
+            setLayout(layout);
+        }
+
+        ~GameShowWidget()
+        {
+        }
+
+        void changeGameMode(int mode = 0)
+        {
+            // qDebug() << "chageGameMode";
+            QString str = gameStartGameButton->text();
+            // qDebug() << str;
+            if (mode == 0)
+            {
+                if (str == "开始游戏")
+                {
+                    gameStartGameButton->setText("结束游戏");
+                    gameArea->start();
+                    gameScoreNumLabel->setText("0");
+                }
+            }
+            else if (mode == 1)
+            {
+                if (str == "结束游戏")
+                {
+                    // qDebug() << gameStartGameButton->text();
+                    gameStartGameButton->setText("开始游戏");
+                    gameArea->end();
+
+                    // 吃完全部食物
+                    QString score = gameScoreNumLabel->text();
+                    if (score.toInt()
+                        == gameArea->getWidgetAllBlockWidth() * gameArea->getWidgetAllBlockHeight()
+                               - 1)
+                    {
+                        QMessageBox::warning(this,
+                                             "游戏结束",
+                                             "恭喜你吃完全部食物!",
+                                             QMessageBox::Ok);
+                    }
+                    else
+                    {
+                        QMessageBox::warning(this,
+                                             "游戏结束",
+                                             "得分:" + gameScoreNumLabel->text(),
+                                             QMessageBox::Ok);
+                    }
+                }
+            }
+        }
+
+        // 键盘监听上下左右
+        void keyPressEvent(QKeyEvent *event)
+        {
+            if (event->key() == Qt::Key_Up)
+            {
+                gameArea->setSnakeDirection("u");
+            }
+            else if (event->key() == Qt::Key_Down)
+            {
+                gameArea->setSnakeDirection("d");
+            }
+            else if (event->key() == Qt::Key_Left)
+            {
+                gameArea->setSnakeDirection("l");
+            }
+            else if (event->key() == Qt::Key_Right)
+            {
+                gameArea->setSnakeDirection("r");
+            }
+        }
+
+    private:
+        QVBoxLayout *layout;
+        QHBoxLayout *gameTopLayout;
+        QLabel *gameScoreNameLabel;
+        QLabel *gameScoreNumLabel;
+        QPushButton *gameStartGameButton;
+        QPushButton *gameSettingButton;
+        SnakeGameWidget *gameArea;
+        QPushButton *gameHelpButton;
+};

README.md

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+# 介绍
+
+## 控制蛇的方向
+
+> 使用键盘的上下左右键来控制蛇的方向
+
+![](img/SnakeDirection.gif)
+
+## 蛇的活动空间
+
+> 蛇的活动空间随着窗口的变化而变化
+
+![](img/SnakeMoveSpace.gif)
+
+## 蛇的移动
+
+> 通过`游戏设置`可以设置蛇的移动速度（默认：100ms）
+
+![](img/SnakeMoveSpeed.gif)