C++简易贪吃蛇

贪吃蛇想必大家都玩过。

我用 chatgpt 编写了一个贪吃蛇的代码。

#include <iostream>
#include <conio.h>
#include <windows.h>

using namespace std;

bool gameOver;
const int width = 20;
const int height = 20;
int x, y, fruitX, fruitY, score;
int tailX[100], tailY[100];
int nTail;
enum eDirection { STOP = 0, LEFT, RIGHT, UP, DOWN };
eDirection dir;

void Setup() {
    gameOver = false;
    dir = STOP;
    x = width / 2;
    y = height / 2;
    fruitX = rand() % width;
    fruitY = rand() % height;
    score = 0;
}

void Draw() {
    system("cls"); // 清空屏幕

    // 顶部边界
    for (int i = 0; i < width+2; i++)
        printf("#");
    cout << "\n";

    for (int i = 0; i < height; i++) {
        for (int j = 0; j < width; j++) {
            if (j == 0)
                cout << "#";
            if (i == y && j == x)
                cout << "O"; // 蛇头
            else if (i == fruitY && j == fruitX)
                cout << "F"; // 水果
            else {
                bool print = false;
                for (int k = 0; k < nTail; k++) {
                    if (tailX[k] == j && tailY[k] == i) {
                        cout << "o"; // 蛇身
                        print = true;
                    }
                }
                if (!print)
                    cout << " ";
            }
            if (j == width - 1)
                cout << "#";
        }
        cout << endl;
    }

    // 底部边界
    for (int i = 0; i < width+2; i++)
        cout << "#";
    cout << endl;

    cout << "Score:" << score << endl;
}

void Input() {
    if (_kbhit()) {
        switch (_getch()) {
        case 'a':
            dir = LEFT;
            break;
        case 'd':
            dir = RIGHT;
            break;
        case 'w':
            dir = UP;
            break;
        case 's':
            dir = DOWN;
            break;
        case 'x':
            gameOver = true;
            break;
        }
    }
}

void Logic() {
    int prevX = tailX[0];
    int prevY = tailY[0];
    int prev2X, prev2Y;
    tailX[0] = x;
    tailY[0] = y;
    for (int i = 1; i < nTail; i++) {
        prev2X = tailX[i];
        prev2Y = tailY[i];
        tailX[i] = prevX;
        tailY[i] = prevY;
        prevX = prev2X;
        prevY = prev2Y;
    }
    switch (dir) {
    case LEFT:
        x--;
        break;
    case RIGHT:
        x++;
        break;
    case UP:
        y--;
        break;
    case DOWN:
        y++;
        break;
    default:
        break;
    }
    // 如果蛇头碰到边界，游戏结束
    if (x >= width || x < 0 || y >= height || y < 0)
        gameOver = true;
    // 如果蛇头碰到自己的身体，游戏结束
    for (int i = 0; i < nTail; i++) {
        if (tailX[i] == x && tailY[i] == y)
            gameOver = true;
    }
    // 如果蛇头吃到水果，增加分数，水果重新生成
    if (x == fruitX && y == fruitY) {
        score += 10;
        fruitX = rand() % width;
        fruitY = rand() % height;
        nTail++;
    }
}

int main() {
    Setup();
    while (!gameOver) {
        Draw();
        Input();
        Logic();
//        Sleep(10); // 添加延时，控制蛇的移动速度
    }
    return 0;
}

这个时候，发现图片闪烁严重，于是：

#include <iostream>
#include <conio.h>
#include <windows.h>

using namespace std;

bool gameOver;
const int width = 20;
const int height = 20;
int x, y, fruitX, fruitY, score;
int tailX[100], tailY[100];
int nTail;
enum eDirection { STOP = 0, LEFT, RIGHT, UP, DOWN };
eDirection dir;

void Setup() {
    gameOver = false;
    dir = STOP;
    x = width / 2;
    y = height / 2;
    fruitX = rand() % width;
    fruitY = rand() % height;
    score = 0;
}

void Draw() {
    // 设置光标位置
    COORD coord;
    coord.X = 0;
    coord.Y = 0;
    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);

    // 顶部边界
    for (int i = 0; i < width+2; i++)
        cout << "#";
    cout << endl;

    for (int i = 0; i < height; i++) {
        for (int j = 0; j < width; j++) {
            if (j == 0)
                cout << "#";
            if (i == y && j == x)
                cout << "O"; // 蛇头
            else if (i == fruitY && j == fruitX)
                cout << "F"; // 水果
            else {
                bool print = false;
                for (int k = 0; k < nTail; k++) {
                    if (tailX[k] == j && tailY[k] == i) {
                        cout << "o"; // 蛇身
                        print = true;
                    }
                }
                if (!print)
                    cout << " ";
            }
            if (j == width - 1)
                cout << "#";
        }
        cout << endl;
    }

    // 底部边界
    for (int i = 0; i < width+2; i++)
        cout << "#";
    cout << endl;

    cout << "Score:" << score << endl;
}

void Input() {
    if (_kbhit()) {
        switch (_getch()) {
        case 'a':
            dir = LEFT;
            break;
        case 'd':
            dir = RIGHT;
            break;
        case 'w':
            dir = UP;
            break;
        case 's':
            dir = DOWN;
            break;
        case 'x':
            gameOver = true;
            break;
        }
    }
}

void Logic() {
    int prevX = tailX[0];
    int prevY = tailY[0];
    int prev2X, prev2Y;
    tailX[0] = x;
    tailY[0] = y;
    for (int i = 1; i < nTail; i++) {
        prev2X = tailX[i];
        prev2Y = tailY[i];
        tailX[i] = prevX;
        tailY[i] = prevY;
        prevX = prev2X;
        prevY = prev2Y;
    }
    switch (dir) {
    case LEFT:
        x--;
        break;
    case RIGHT:
        x++;
        break;
    case UP:
        y--;
        break;
    case DOWN:
        y++;
        break;
    default:
        break;
    }
    // 如果蛇头碰到边界，游戏结束
    if (x >= width || x < 0 || y >= height || y < 0)
        gameOver = true;
    // 如果蛇头碰到自己的身体，游戏结束
    for (int i = 0; i < nTail; i++) {
        if (tailX[i] == x && tailY[i] == y)
            gameOver = true;
    }
    // 如果蛇头吃到水果，增加分数，水果重新生成
    if (x == fruitX && y == fruitY) {
        score += 10;
        fruitX = rand() % width;
        fruitY = rand() % height;
        nTail++;
    }
}

int main() {
    Setup();
    while (!gameOver) {
        Draw();
        Input();
        Logic();
        Sleep(100); // 添加延时，控制蛇的移动速度
    }
    return 0;
}

这就是最简易的贪吃蛇，你还可以用别的方式来制作它。