C语言+easyX界面库实现贪吃蛇

梦里梦外; 2022-06-16 00:40 200阅读 0赞

问题描述：  
实现贪吃蛇游戏，有等级，分数，并且会保存最高等级和最高分

easysnake.h代码：

#pragma once
    
    #include <stdio.h>
    #include <graphics.h>
    #include <windows.h>
    #include <mmsystem.h>
    #include <time.h>
    #include <conio.h>
    #include "resource.h"
    #pragma comment(lib, "winmm.lib")
    
    #define SNAKE_DRAW_SIZE     15
    
    #define WND_WIDTH           1000
    #define WND_HEIGHT          600
    
    #define REGION_WIDTH        600
    #define REGION_HEIGHT       600
    
    #define RIGHT_EDGE_WIDTH    10
    
    #define HEADLINE_POSX       265
    #define HEADLINE_POSY       120
    
    #define TEXT_TIME_POSX      670
    #define TEXT_TIME_POSY      100
    
    #define TEXT_LEVEL_POSX     670
    #define TEXT_LEVEL_POSY     100
    
    #define TEXT_SCORE_POSX     670
    #define TEXT_SCORE_POSY     200
    
    #define TEXT_LEN_POSX       670
    #define TEXT_LEN_POSY       300
    
    #define TEXT_HIGHSCORE_POSX 670
    #define TEXT_HIGHSCORE_POSY 400
    
    #define TEXT_HIGHLEVEL_POSX 670
    #define TEXT_HIGHLEVEL_POSY 500
    
    #define SNAKE_INIT_PT_X     (REGION_WIDTH / SNAKE_DRAW_SIZE / 5)
    #define SNAKE_INIT_PT_Y     (REGION_HEIGHT / SNAKE_DRAW_SIZE / 2)
    
    #define FIRST_ITEM_POSX     375
    #define FIRST_ITEM_POSY     250
    #define FIRST_ITEM_WIDTH    220
    #define FIRST_ITEM_HEIGHT   30
    
    #define SECOND_ITEM_POSX    375
    #define SECOND_ITEM_POSY    350
    #define SECOND_ITEM_WIDTH   220
    #define SECOND_ITEM_HEIGHT  30
    
    #define THIRD_ITEM_POSX     375
    #define THIRD_ITEM_POSY     450
    #define THIRD_ITEM_WIDTH    220
    #define THIRD_ITEM_HEIGHT   30
    
    #define BIGFOOD_SHOWTIME    6000
    #define BIGFOOD_STEPTIME    100
    
    #define FOOD_SCORE          1
    #define BIG_FOOD_SCORE      5
    
    #define INIT_SPEED          110
    #define MINUS_SPEED         10
    
    #define TOTAL_TIME          100
    
    #define SNAKE_MAX ((REGION_WIDTH / SNAKE_DRAW_SIZE) * (REGION_HEIGHT / SNAKE_DRAW_SIZE))
    #define BREAKTHROUGHAPPNAME L"BreakThrough"
    #define BREAKTHROUGHSCORE   L"HighScore"
    #define BREAKTHROUGHLEVEL   L"HighLevel"
    
    #define TIMELIMITEDAPPNAME  L"TimeLimited"
    #define TIMELIMITEDSCORE    L"HighScore"
    
    int arrScore[] = { 0, 8, 16, 24, 32, 40, 48, 60, 72, 85, 95, 118, 130, 155, 170, 190, 210, 230, 250, 270, 300, 350, 400,
    460, 500, 550, 600, 650, 700, 750, 810, 880, 950, 1000, 1100,
    1250, 1400, 1600, 1850, 2100, 2400, 2700, 3000, 3400, 3800, 4200, 4600, 5000,
    5500, 5900, 6300, 6800, 7500, 8000, 8500, 9000, 9500, 10000 };
    
    enum EmPattern
    {
        emBreakThroughPattern = 1,
        emTimeLimitedPattern,
        emIntelligencePattern,
    };
    
    enum EmStage
    {
        emChooseStage = 1,
        emPlayStage,
    };
    
    enum EmDir
    {
        emDirUp = 72,
        emDirDown = 80,
        emDirLeft = 75,
        emDirRight = 77,
    };
    
    struct Point
    {
        int x;
        int y;
    };
    
    struct Snake
    {
        int nCount;
        Point pt[SNAKE_MAX];
        EmDir dir;
    };
    
    struct Food
    {
        Point fpt;
        char isEat;
    };
    
    struct BigFood
    {
        Point fpt;
        char isEat;
    };
    
    EmStage stage = EmStage::emChooseStage;
    EmPattern pattern = EmPattern::emBreakThroughPattern;
    Snake snake;
    Food food;
    BigFood bigFood;
    int nBigFoodTimer = 0;
    int nCurLevel = 1;
    int nCurScore = 0;
    int nSnakeLen = 3;
    int nHighLevel = 0;
    int nHighScore = 0;
    int nCurSpeed = INIT_SPEED;
    int nRemainTime = TOTAL_TIME;
    int nTimePast = 0;
    
    void SetMouseNormal();
    void SetMouseHand();
    void SetLevelText();
    void SetHoverStyle();
    void SetNormalStyle();
    void TackleMouseMove(int x, int y);
    void TackleLeftButtonDown(int x, int y);
    void TackleMouseAction();
    void InitFirstScene();
    void InitSecondBackGround();
    void InitSecondScene();
    void GameInit();
    void PlayGame();
    int IsFoodPosOk(int x, int y);
    void ProduceFood();
    void DrawFood();
    int ProduceBigFood();
    void DrawBigFood();
    int IsEatBigFood();
    void EatFood();
    void LevelUp();
    void DrawSnake();
    void SnakeMove();
    void ChangeDir();
    void BreakSnake();
    void WriteRecord();
    void BigFoodDisappear();
    void TimeEclipse();
    void DecideHeadDirection();
    void DrawSnakeHead(int nIndex);
    void DecideCornerDirection(int idx);
    void DrawCorner(int nIndex, int idx);
    void DecideBodyDirection(int idx);
    void DrawBody(int nIndex, int idx);
    void DecideTailDirection(int idx);
    void DrawTail(int nIndex, int idx);
    void BreakThroughPattern();
    void TimeLimitedPattern();

easysnake.cpp

#include "easysnake.h"
    
    BOOL KExpandEnvironmentString(IN LPCTSTR lpEnvironmentString, OUT LPTSTR lpExpandString, IN ULONG ulExpandStringLength)
    {
        BOOL bResult = FALSE;
    
        LPTSTR lpBuffer = NULL;
        ULONG ulRetLength = 0;
    
        if (!lpEnvironmentString || !lpExpandString || 1 > ulExpandStringLength)
        {
            goto _abort;
        }
    
        ulRetLength = ::ExpandEnvironmentStrings(lpEnvironmentString, NULL, 0);
        if (1 > ulRetLength || ulRetLength > ulExpandStringLength - 1)
        {
            goto _abort;
        }
    
        __try
        {
            lpBuffer = new TCHAR[ulRetLength];
            if (!lpBuffer)
            {
                goto _abort;
            }
    
            ::RtlZeroMemory(lpBuffer, sizeof(TCHAR)* ulRetLength);
    
            ulRetLength = ::ExpandEnvironmentStrings(lpEnvironmentString, lpBuffer, ulRetLength);
            if (ulRetLength && ulRetLength <= ulExpandStringLength - 1)
            {
                _tcsncpy_s(lpExpandString, ulExpandStringLength - 1, lpBuffer, ulRetLength);
                bResult = TRUE;
            }
        }
        __except (EXCEPTION_EXECUTE_HANDLER)
        {
            bResult = FALSE;
        }
    
    _abort:
    
        if (lpBuffer)
        {
            delete[] lpBuffer;
            lpBuffer = NULL;
        }
    
        return bResult;
    }
    
    void SetMouseNormal()
    {
        HCURSOR hcur = LoadCursor(NULL, IDC_ARROW);
        HWND hwnd = GetHWnd();
        SetClassLong(hwnd, GCL_HCURSOR, (long)hcur);
    }
    
    void SetMouseHand()
    {
        HCURSOR hcur = LoadCursor(NULL, MAKEINTRESOURCE(32649));
        HWND hwnd = GetHWnd();
        SetClassLong(hwnd, GCL_HCURSOR, (long)hcur);
    }
    
    void SetLevelText()
    {
        switch (pattern)
        {
        case EmPattern::emBreakThroughPattern:
            outtextxy(FIRST_ITEM_POSX, FIRST_ITEM_POSY, L"闯关模式");
            break;
        case EmPattern::emTimeLimitedPattern:
            outtextxy(SECOND_ITEM_POSX, SECOND_ITEM_POSY, L"限时模式");
            break;
        case EmPattern::emIntelligencePattern:
            outtextxy(THIRD_ITEM_POSX, THIRD_ITEM_POSY, L"智能模式");
            break;
        default:
            break;
        }
    }
    
    void SetHoverStyle()
    {
        settextcolor(RGB(255, 0, 119));
        SetLevelText();
        SetMouseHand();
    }
    
    void SetNormalStyle()
    {
        settextcolor(BROWN);
        SetLevelText();
        SetMouseNormal();
    }
    
    void TackleMouseMove(int x, int y)
    {
        if (stage == EmStage::emPlayStage)
            return;
    
        if (x > FIRST_ITEM_POSX && x < FIRST_ITEM_POSX + FIRST_ITEM_WIDTH && y >FIRST_ITEM_POSY && y < FIRST_ITEM_POSY + FIRST_ITEM_HEIGHT)
        {
            pattern = EmPattern::emBreakThroughPattern;
            SetHoverStyle();
            return;
        }
        else
        {
            pattern = EmPattern::emBreakThroughPattern;
            SetNormalStyle();
        }
    
        if (x > SECOND_ITEM_POSX && x < SECOND_ITEM_POSX + SECOND_ITEM_WIDTH && y > SECOND_ITEM_POSY && y < SECOND_ITEM_POSY + SECOND_ITEM_HEIGHT)
        {
            pattern = EmPattern::emTimeLimitedPattern;
            SetHoverStyle();
            return;
        }
        else
        {
            pattern = EmPattern::emTimeLimitedPattern;
            SetNormalStyle();
        }
    
        if (x > THIRD_ITEM_POSX && x < THIRD_ITEM_POSX + THIRD_ITEM_WIDTH && y > THIRD_ITEM_POSY && y < THIRD_ITEM_POSY + THIRD_ITEM_HEIGHT)
        {
            pattern = EmPattern::emIntelligencePattern;
            SetHoverStyle();
        }
        else
        {
            pattern = EmPattern::emIntelligencePattern;
            SetNormalStyle();
        }
    }
    
    void TimeLimitedPattern()
    {
        settextstyle(20, 20, L"楷体", 0, 0, 900, 0, 0, 0);
        setbkmode(TRANSPARENT);
        settextcolor(RGB(255, 0, 0));
    
        WCHAR szCurRemainTime[32];
        WCHAR szCurScore[32];
        WCHAR szSnakeLen[32];
        WCHAR szHighScore[32];
    
        swprintf_s(szCurRemainTime, L"剩余时间: %d", nRemainTime);
        swprintf_s(szCurScore, L"当前得分: %d", nCurScore);
        swprintf_s(szSnakeLen, L"蛇身长度: %d", snake.nCount);
        swprintf_s(szHighScore, L"最高分数: %d", nHighScore);
    
        outtextxy(TEXT_TIME_POSX, TEXT_TIME_POSY, szCurRemainTime);
        outtextxy(TEXT_SCORE_POSX, TEXT_SCORE_POSY, szCurScore);
        outtextxy(TEXT_LEN_POSX, TEXT_LEN_POSY, szSnakeLen);
        outtextxy(TEXT_HIGHSCORE_POSX, TEXT_HIGHSCORE_POSY, szHighScore);
    }
    
    void BreakThroughPattern()
    {
        settextstyle(20, 20, L"楷体", 0, 0, 900, 0, 0, 0);
        setbkmode(TRANSPARENT);
        settextcolor(RGB(255, 0, 0));
    
        WCHAR szCurLevel[32];
        WCHAR szCurScore[32];
        WCHAR szSnakeLen[32];
        WCHAR szHighLevel[32];
        WCHAR szHighScore[32];
    
        swprintf_s(szCurLevel, L"当前级别: %d", nCurLevel);
        swprintf_s(szCurScore, L"当前得分: %d", nCurScore);
        swprintf_s(szSnakeLen, L"蛇身长度: %d", snake.nCount);
        swprintf_s(szHighLevel, L"最高级别: %d", nHighLevel);
        swprintf_s(szHighScore, L"最高分数: %d", nHighScore);
    
        outtextxy(TEXT_LEVEL_POSX, TEXT_LEVEL_POSY, szCurLevel);
        outtextxy(TEXT_SCORE_POSX, TEXT_SCORE_POSY, szCurScore);
        outtextxy(TEXT_LEN_POSX, TEXT_LEN_POSY, szSnakeLen);
        outtextxy(TEXT_HIGHSCORE_POSX, TEXT_HIGHSCORE_POSY, szHighLevel);
        outtextxy(TEXT_HIGHLEVEL_POSX, TEXT_HIGHLEVEL_POSY, szHighScore);
    }
    
    void TackleLeftButtonDown(int x, int y)
    {
        if (x > FIRST_ITEM_POSX && x < FIRST_ITEM_POSX + FIRST_ITEM_WIDTH && y >FIRST_ITEM_POSY && y < FIRST_ITEM_POSY + FIRST_ITEM_HEIGHT)
        {
            pattern = EmPattern::emBreakThroughPattern;
            InitSecondScene();
        }
    
        if (x > SECOND_ITEM_POSX && x < SECOND_ITEM_POSX + SECOND_ITEM_WIDTH && y > SECOND_ITEM_POSY && y < SECOND_ITEM_POSY + SECOND_ITEM_HEIGHT)
        {
            pattern = EmPattern::emTimeLimitedPattern;
            InitSecondScene();
        }
    
    
        if (x > THIRD_ITEM_POSX && x < THIRD_ITEM_POSX + THIRD_ITEM_WIDTH && y > THIRD_ITEM_POSY && y < THIRD_ITEM_POSY + THIRD_ITEM_HEIGHT)
        {
            pattern = EmPattern::emIntelligencePattern;
            InitSecondScene();
        }
    }
    
    void TackleMouseAction()
    {
        MOUSEMSG msg;
        while (1)
        {
            msg = GetMouseMsg();//获取鼠标信息
            switch (msg.uMsg)
            {
            case WM_LBUTTONDOWN://处理鼠标的左键点击消息
                TackleLeftButtonDown(msg.x, msg.y);
                break;
            case WM_MOUSEMOVE://处理鼠标的左键点击消息
                TackleMouseMove(msg.x, msg.y);
                break;
            default:
                break;
            }
        }
    }
    
    void InitFirstScene()
    {
        cleardevice();
        stage = EmStage::emChooseStage;
    
        IMAGE img;
        for (int i = 0; i < 22; i++)
        {
            loadimage(&img, L"jpg", MAKEINTRESOURCE(IDR_JPG1), SNAKE_DRAW_SIZE * 3, SNAKE_DRAW_SIZE * 3);
            putimage(4 + SNAKE_DRAW_SIZE * 3 * i, 0, &img);
        }
    
        settextstyle(38, 38, L"楷体", 0, 0, 1000, 0, 0, 0);
        setbkmode(TRANSPARENT);
        settextcolor(RGB(255, 0, 0));
        outtextxy(HEADLINE_POSX, HEADLINE_POSY, L"贪吃蛇大作战");
    
        settextstyle(28, 28, L"楷体", 0, 0, 1000, 0, 0, 0);
        setbkmode(TRANSPARENT);
        pattern = EmPattern::emBreakThroughPattern;
        SetNormalStyle();
        pattern = EmPattern::emTimeLimitedPattern;
        SetNormalStyle();
        pattern = EmPattern::emIntelligencePattern;
        SetNormalStyle();
        pattern = EmPattern::emBreakThroughPattern;
        TackleMouseAction();
    }
    
    void InitSecondBackGround()
    {
        setlinecolor(RED);
        setlinestyle(PS_SOLID, RIGHT_EDGE_WIDTH);
        line(REGION_WIDTH + 4, 0, REGION_WIDTH + 4, REGION_HEIGHT);
        if (EmPattern::emBreakThroughPattern == pattern)
            BreakThroughPattern();
        else if (EmPattern::emTimeLimitedPattern == pattern)
            TimeLimitedPattern();
        else if (EmPattern::emIntelligencePattern == pattern)
            BreakThroughPattern();
    }
    
    void InitSecondScene()
    {
        cleardevice();
        stage = EmStage::emPlayStage;
    
        GameInit();
        InitSecondBackGround();
        PlayGame();
    }
    
    void GameInit()
    {
        snake.dir = EmDir::emDirRight;
        snake.nCount = 3;
        for (int i = 0; i < snake.nCount; i++)
        {
            snake.pt[i].x = SNAKE_INIT_PT_X - i;
            snake.pt[i].y = SNAKE_INIT_PT_Y;
        }
        food.isEat = 1;
        bigFood.isEat = 1;
        nBigFoodTimer = 0;
    
        WCHAR szTempPath[MAX_PATH] = { 0 };
        WCHAR szIniPath[MAX_PATH] = { 0 };
        KExpandEnvironmentString(L"%TEMP%", szTempPath, MAX_PATH);
        swprintf_s(szIniPath, L"%s\\record.ini", szTempPath);
        nCurSpeed = INIT_SPEED;
        nCurLevel = 1;
        nCurScore = 0;
        nSnakeLen = 3;
        nRemainTime = TOTAL_TIME;
        nTimePast = 0;
        nHighLevel = ::GetPrivateProfileInt(BREAKTHROUGHAPPNAME, BREAKTHROUGHLEVEL, 1, szIniPath);
        if (pattern == EmPattern::emTimeLimitedPattern)
            nHighScore = ::GetPrivateProfileInt(TIMELIMITEDAPPNAME, TIMELIMITEDSCORE, 0, szIniPath);
        else
            nHighScore = ::GetPrivateProfileInt(BREAKTHROUGHAPPNAME, BREAKTHROUGHSCORE, 0, szIniPath);
    }
    
    void PlayGame()
    {
        while (1)
        {
            while (!_kbhit())
            {
                ProduceFood();
                BigFoodDisappear();
                TimeEclipse();
                BeginBatchDraw();
                cleardevice();
                InitSecondBackGround();
                DrawFood();
                DrawBigFood();
                EatFood();
                SnakeMove();
                DrawSnake();
                Sleep(nCurSpeed);
                EndBatchDraw();
                BreakSnake();
            }
            ChangeDir();
        }
    }
    
    void TimeEclipse()
    {
        if (pattern != EmPattern::emTimeLimitedPattern)
            return;
    
        nTimePast += nCurSpeed;
        nRemainTime = TOTAL_TIME - nTimePast / 1000;
        nCurSpeed = INIT_SPEED - nTimePast / 1000;
        if (nRemainTime < 0)
        {
            WCHAR szScore[32] = { 0 };
            swprintf_s(szScore, L"你的得分是: %d", nCurScore);
            ::MessageBox(0, szScore, L"时间到", 0);
            WriteRecord();
            InitFirstScene();
        }
    }
    
    void BigFoodDisappear()
    {
        if (1 == bigFood.isEat)
            return;
    
        nBigFoodTimer += BIGFOOD_STEPTIME;//大食物定时消失
        if (nBigFoodTimer >= BIGFOOD_SHOWTIME)
        {
            bigFood.isEat = 1;
            nBigFoodTimer = 0;
        }
    }
    
    void WriteRecord()
    {
        WCHAR szTempPath[MAX_PATH] = { 0 };
        WCHAR szIniPath[MAX_PATH] = { 0 };
        WCHAR szHighScore[8] = { 0 };
        WCHAR szHighLevel[8] = { 0 };
        KExpandEnvironmentString(L"%TEMP%", szTempPath, MAX_PATH);
        swprintf_s(szIniPath, L"%s\\record.ini", szTempPath);
    
        if (pattern == EmPattern::emBreakThroughPattern)
        {
            nHighLevel = ::GetPrivateProfileInt(BREAKTHROUGHAPPNAME, BREAKTHROUGHLEVEL, 1, szIniPath);
            nHighScore = ::GetPrivateProfileInt(BREAKTHROUGHAPPNAME, BREAKTHROUGHSCORE, 0, szIniPath);
            if (nCurScore > nHighScore)
            {
                swprintf_s(szHighScore, L"%d", nCurScore);
                WritePrivateProfileString(BREAKTHROUGHAPPNAME, BREAKTHROUGHSCORE, szHighScore, szIniPath);
            }
            if (nCurLevel > nHighLevel)
            {
                swprintf_s(szHighLevel, L"%d", nCurLevel);
                WritePrivateProfileString(BREAKTHROUGHAPPNAME, BREAKTHROUGHLEVEL, szHighLevel, szIniPath);
            }
        }
        else if (pattern == EmPattern::emTimeLimitedPattern)
        {
            nHighScore = ::GetPrivateProfileInt(TIMELIMITEDAPPNAME, TIMELIMITEDSCORE, 0, szIniPath);
            if (nCurScore > nHighScore)
            {
                swprintf_s(szHighScore, L"%d", nCurScore);
                WritePrivateProfileString(TIMELIMITEDAPPNAME, TIMELIMITEDSCORE, szHighScore, szIniPath);
            }
        }
    }
    
    void BreakSnake()
    {
        if (snake.pt[0].x < 0 || snake.pt[0].x > REGION_WIDTH / SNAKE_DRAW_SIZE - 1 || snake.pt[0].y < 0 || snake.pt[0].y > REGION_HEIGHT / SNAKE_DRAW_SIZE - 1)
        {
            ::MessageBox(0, L"你撞墙了", L"游戏失败", 0);
            WriteRecord();
            InitFirstScene();
        }
    
        for (int i = snake.nCount - 2; i > 0; i--)
        {
            if (snake.pt[i].x == snake.pt[0].x && snake.pt[i].y == snake.pt[0].y)
            {
                ::MessageBox(0, L"你咬到尾巴了", L"游戏失败", 0);
                WriteRecord();
                InitFirstScene();
            }
        }
    }
    
    void ChangeDir()
    {
        int dir = _getch();
        switch (dir)
        {
        case EmDir::emDirUp:
            if (snake.dir != EmDir::emDirDown)
                snake.dir = EmDir::emDirUp;
            break;
        case EmDir::emDirDown:
            if (snake.dir != EmDir::emDirUp)
                snake.dir = EmDir::emDirDown;
            break;
        case EmDir::emDirLeft:
            if (snake.dir != EmDir::emDirRight)
                snake.dir = EmDir::emDirLeft;
            break;
        case EmDir::emDirRight:
            if (snake.dir != EmDir::emDirLeft)
                snake.dir = EmDir::emDirRight;
            break;
        default:
            break;
        }
    }
    
    void SnakeMove()
    {
        for (int i = snake.nCount; i > 0; i--)
        {
            snake.pt[i].x = snake.pt[i - 1].x;
            snake.pt[i].y = snake.pt[i - 1].y;
        }
        switch (snake.dir)
        {
        case EmDir::emDirUp:
            snake.pt[0].y--;
            break;
        case EmDir::emDirDown:
            snake.pt[0].y++;
            break;
        case EmDir::emDirLeft:
            snake.pt[0].x--;
            break;
        case EmDir::emDirRight:
            snake.pt[0].x++;
            break;
        default:
            break;
        }
    }
    
    void DecideHeadDirection()
    {
        if (snake.pt[0].y == snake.pt[1].y && snake.pt[0].x > snake.pt[1].x)//头往右走
            DrawSnakeHead(0);
        else if (snake.pt[0].y == snake.pt[1].y && snake.pt[0].x < snake.pt[1].x)//头往左走
            DrawSnakeHead(1);
        else if (snake.pt[0].x == snake.pt[1].x && snake.pt[0].y < snake.pt[1].y)//头往上走
            DrawSnakeHead(2);
        else if (snake.pt[0].x == snake.pt[1].x && snake.pt[0].y > snake.pt[1].y)//头往下走
            DrawSnakeHead(3);
    }
    
    void DrawSnakeHead(int nIndex)
    {
        IMAGE img;
        loadimage(&img, L"jpg", MAKEINTRESOURCE(IDR_JPG2 + nIndex), SNAKE_DRAW_SIZE, SNAKE_DRAW_SIZE);
        putimage(snake.pt[0].x * SNAKE_DRAW_SIZE, snake.pt[0].y * SNAKE_DRAW_SIZE, &img);
    }
    
    void DecideCornerDirection(int idx)
    {
        if (snake.pt[idx].y > snake.pt[idx - 1].y && snake.pt[idx].x == snake.pt[idx - 1].x && snake.pt[idx].y == snake.pt[idx + 1].y && snake.pt[idx].x > snake.pt[idx + 1].x)
            DrawCorner(0, idx);//右->上
        else if (snake.pt[idx].y == snake.pt[idx - 1].y && snake.pt[idx].x > snake.pt[idx - 1].x && snake.pt[idx].y > snake.pt[idx + 1].y && snake.pt[idx].x == snake.pt[idx + 1].x)
            DrawCorner(0, idx);//下->左
    
        else if (snake.pt[idx].y > snake.pt[idx - 1].y && snake.pt[idx].x == snake.pt[idx - 1].x && snake.pt[idx].y == snake.pt[idx + 1].y && snake.pt[idx].x < snake.pt[idx + 1].x)
            DrawCorner(1, idx);//左->上
        else if (snake.pt[idx].y == snake.pt[idx - 1].y && snake.pt[idx].x < snake.pt[idx - 1].x && snake.pt[idx].y > snake.pt[idx + 1].y && snake.pt[idx].x == snake.pt[idx + 1].x)
            DrawCorner(1, idx);//下->右
    
        else if (snake.pt[idx].y < snake.pt[idx - 1].y && snake.pt[idx].x == snake.pt[idx - 1].x && snake.pt[idx].y == snake.pt[idx + 1].y && snake.pt[idx].x > snake.pt[idx + 1].x)
            DrawCorner(2, idx);//右->下
        else if (snake.pt[idx].y == snake.pt[idx - 1].y && snake.pt[idx].x > snake.pt[idx - 1].x && snake.pt[idx].y < snake.pt[idx + 1].y && snake.pt[idx].x == snake.pt[idx + 1].x)
            DrawCorner(2, idx);//上->左
    
        else if (snake.pt[idx].y < snake.pt[idx - 1].y && snake.pt[idx].x == snake.pt[idx - 1].x && snake.pt[idx].y == snake.pt[idx + 1].y && snake.pt[idx].x < snake.pt[idx + 1].x)
            DrawCorner(3, idx);//左->下
        else if (snake.pt[idx].y == snake.pt[idx - 1].y && snake.pt[idx].x < snake.pt[idx - 1].x && snake.pt[idx].y < snake.pt[idx + 1].y && snake.pt[idx].x == snake.pt[idx + 1].x)
            DrawCorner(3, idx);//上->右
        else
            DecideBodyDirection(idx);//不是corner的情况在考虑body
    }
    
    void DrawCorner(int nIndex, int idx)
    {
        IMAGE img;
        loadimage(&img, L"jpg", MAKEINTRESOURCE(IDR_JPG6 + nIndex), SNAKE_DRAW_SIZE, SNAKE_DRAW_SIZE);
        putimage(snake.pt[idx].x * SNAKE_DRAW_SIZE, snake.pt[idx].y * SNAKE_DRAW_SIZE, &img);
    }
    
    void DecideBodyDirection(int idx)
    {
        if (snake.pt[idx].x == snake.pt[idx - 1].x || snake.pt[idx].x == snake.pt[idx + 1].x)//上下
            DrawBody(0, idx);
        else if (snake.pt[idx].y == snake.pt[idx - 1].y || snake.pt[idx].y == snake.pt[idx + 1].y)//左右
            DrawBody(1, idx);
    }
    
    void DrawBody(int nIndex, int idx)
    {
        IMAGE img;
        loadimage(&img, L"jpg", MAKEINTRESOURCE(IDR_JPG10 + nIndex), SNAKE_DRAW_SIZE, SNAKE_DRAW_SIZE);
        putimage(snake.pt[idx].x * SNAKE_DRAW_SIZE, snake.pt[idx].y * SNAKE_DRAW_SIZE, &img);
    }
    
    void DecideTailDirection()
    {
        int idx = snake.nCount - 1;
        if (snake.pt[idx].y == snake.pt[idx - 1].y && snake.pt[idx].x < snake.pt[idx - 1].x)//往右
            DrawTail(0, idx);
        else if (snake.pt[idx].y == snake.pt[idx - 1].y && snake.pt[idx].x > snake.pt[idx - 1].x)//往左
            DrawTail(1, idx);
        else if (snake.pt[idx].y > snake.pt[idx - 1].y && snake.pt[idx].x == snake.pt[idx - 1].x)//往上
            DrawTail(2, idx);
        else if (snake.pt[idx].y < snake.pt[idx - 1].y && snake.pt[idx].x == snake.pt[idx - 1].x)//往下
            DrawTail(3, idx);
    }
    
    void DrawTail(int nIndex, int idx)
    {
        IMAGE img;
        loadimage(&img, L"jpg", MAKEINTRESOURCE(IDR_JPG12 + nIndex), SNAKE_DRAW_SIZE, SNAKE_DRAW_SIZE);
        putimage(snake.pt[idx].x * SNAKE_DRAW_SIZE, snake.pt[idx].y * SNAKE_DRAW_SIZE, &img);
    }
    
    void DrawSnake()
    {
        for (int i = 0; i < snake.nCount; i++)
        {
            if (0 == i)
                DecideHeadDirection();
            else if (i == snake.nCount - 1)
                DecideTailDirection();
            else
                DecideCornerDirection(i);
        }
    }
    
    int IsEatBigFood()
    {
        if (1 == bigFood.isEat)
            return 0;
    
        for (int i = bigFood.fpt.x; i < bigFood.fpt.x + 3; i++)
        {
            for (int j = bigFood.fpt.y; j < bigFood.fpt.y + 3; j++)
            {
                if (snake.pt[0].x == i && snake.pt[0].y == j)
                    return 1;
            }
        }
        return 0;
    }
    
    void LevelUp()
    {
        if (pattern == EmPattern::emTimeLimitedPattern)
            return;
    
        WCHAR szLevelUp[32];
        if (nCurScore > arrScore[nCurLevel])
        {
            swprintf_s(szLevelUp, L"恭喜你，升到第%d级", nCurLevel + 1);
            ::MessageBox(0, szLevelUp, L"升级啦", 0);
            nCurLevel++;
            if (nCurSpeed > 0)
                nCurSpeed -= MINUS_SPEED;
        }
    }
    
    void EatFood()
    {
        if (snake.pt[0].x == food.fpt.x && snake.pt[0].y == food.fpt.y)
        {
            nCurScore += FOOD_SCORE;
            snake.nCount++;
            food.isEat = 1;
            ProduceBigFood();
        }
    
        if (IsEatBigFood())
        {
            nCurScore += BIG_FOOD_SCORE;
            snake.nCount++;
            bigFood.isEat = 1;
        }
    
        LevelUp();
    }
    
    int IsFoodPosOk(int x, int y)
    {
        for (int i = 0; i < snake.nCount; i++)
        {
            if (snake.pt[i].x == x && snake.pt[i].y == y)
                return 0;
        }
    
        if (0 == bigFood.isEat)
        {
            for (int i = bigFood.fpt.x; i < bigFood.fpt.x + 3; i++)
            {
                for (int j = bigFood.fpt.y; j < bigFood.fpt.y + 3; j++)
                {
                    if (x == i && y == j)
                        return 0;
                }
            }
        }
        return 1;
    }
    
    int IsBigFoodPosOk(int x, int y)
    {
        for (int i = x; i < x + 3; i++)
        {
            for (int j = y; j < y + 3; j++)
            {
                if (i < 0 || i > REGION_WIDTH / SNAKE_DRAW_SIZE - 1 || j < 0 || j > REGION_HEIGHT / SNAKE_DRAW_SIZE - 1)
                    return 0;
    
                for (int k = 0; k < snake.nCount; k++)
                {
                    if (snake.pt[k].x == i && snake.pt[k].y == j)
                        return 0;
                }
            }
        }
        return 1;
    }
    
    void ProduceFood()
    {
        if (0 == food.isEat)
            return;
    
        while (1)
        {
            food.fpt.x = rand() % (REGION_WIDTH / SNAKE_DRAW_SIZE);
            food.fpt.y = rand() % (REGION_HEIGHT / SNAKE_DRAW_SIZE);
            if (IsFoodPosOk(food.fpt.x, food.fpt.y))
                break;
        }
        food.isEat = 0;
    }
    
    void DrawFood()
    {
        IMAGE img;
        loadimage(&img, L"jpg", MAKEINTRESOURCE(IDR_JPG1), SNAKE_DRAW_SIZE, SNAKE_DRAW_SIZE);
        putimage(food.fpt.x * SNAKE_DRAW_SIZE, food.fpt.y * SNAKE_DRAW_SIZE, &img);
    }
    
    int ProduceBigFood()
    {
        if (0 == bigFood.isEat)//大食物没被吃掉，不产生
            return 0;
    
        if (rand() % 2 == 0)
        {
            while (1)
            {
                bigFood.fpt.x = rand() % (REGION_WIDTH / SNAKE_DRAW_SIZE);
                bigFood.fpt.y = rand() % (REGION_HEIGHT / SNAKE_DRAW_SIZE);
                if (IsBigFoodPosOk(bigFood.fpt.x, bigFood.fpt.y))
                    break;
            }
            bigFood.isEat = 0;
            return 1;
        }
        return 0;
    }
    
    void DrawBigFood()
    {
        if (1 == bigFood.isEat)
            return;
    
        IMAGE img;
        loadimage(&img, L"jpg", MAKEINTRESOURCE(IDR_JPG1), SNAKE_DRAW_SIZE * 3, SNAKE_DRAW_SIZE * 3);
        putimage(bigFood.fpt.x * SNAKE_DRAW_SIZE, bigFood.fpt.y * SNAKE_DRAW_SIZE, &img);
    }
    
    int main()
    {
        HWND hWnd = GetConsoleWindow();
        SendMessage(hWnd, WM_SETICON, ICON_SMALL, (LPARAM)LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(IDI_ICON1)));
        initgraph(WND_WIDTH, WND_HEIGHT);
    
        srand((unsigned int)time(NULL));
        InitFirstScene();
    
        getchar();
        closegraph();
        return 0;
    }

resource.h

#define IDI_ICON1                       101
    #define IDR_JPG1                        108
    #define IDR_JPG2                        110
    #define IDR_JPG3                        111
    #define IDR_JPG4                        112
    #define IDR_JPG5                        113
    #define IDR_JPG6                        114
    #define IDR_JPG7                        115
    #define IDR_JPG8                        116
    #define IDR_JPG9                        117
    #define IDR_JPG10                       118
    #define IDR_JPG11                       119
    #define IDR_JPG12                       120
    #define IDR_JPG13                       121
    #define IDR_JPG14                       122
    #define IDR_JPG15                       123

运行结果：  
![这里写图片描述][SouthEast]

![这里写图片描述][SouthEast 1]

![这里写图片描述][SouthEast 2]

![这里写图片描述][SouthEast 3]

[SouthEast]: /images/20220616/801b4491134d49cb832df78f9768ad4f.png
[SouthEast 1]: /images/20220616/e2906148cff247b2a24f7abac8951ab9.png
[SouthEast 2]: /images/20220616/210d102f0e2645c884456660e98bb1e6.png
[SouthEast 3]: /images/20220616/ddb2d3db1af14feba667a87763f36e3d.png