贪吃蛇， 要用wsad操控，刚进去时是中文输入法，要切成英文输入法

#include <cstdlib> #include <iostream> #include <vector> #include <conio.h> #include <windows.h> #include <ctime> using namespace std;

const int WIDTH = 40; const int HEIGHT = 20; enum Direction { UP, DOWN, LEFT, RIGHT };

struct Point { int x, y; Point(int x = 0, int y = 0) : x(x), y(y) {} };

class SnakeGame { private: vector<Point> snake; Point food; Direction dir; bool gameOver; int score;

void generateFood() {
    srand(static_cast<unsigned>(time(0)));
    food.x = rand() % (WIDTH - 2) + 1;
    food.y = rand() % (HEIGHT - 2) + 1;
    
    // 修正1：使用传统循环替代范围循环
    for (size_t i = 0; i < snake.size(); ++i) {
        if (snake[i].x == food.x && snake[i].y == food.y) {
            generateFood();
            return;
        }
    }
}

void drawBoard() {
    system("cls");
    for (int i = 0; i < WIDTH; i++) cout << "#";
    cout << endl;

    for (int i = 0; i < HEIGHT; i++) {
        for (int j = 0; j < WIDTH; j++) {
            if (j == 0 || j == WIDTH - 1)
                cout << "#";
            else if (i == 0 || i == HEIGHT - 1)
                cout << "#";
            else {
                bool isSnake = false;
                // 修正2：明确迭代类型
                for (size_t k = 0; k < snake.size(); k++) {
                    if (snake[k].x == j && snake[k].y == i) {
                        // 修正3：蛇头检测逻辑
                        cout << (k == 0 ? 'O' : 'o');
                        isSnake = true;
                        break;
                    }
                }
                if (!isSnake) 
                    cout << (food.x == j && food.y == i ? 'F' : ' ');
            }
        }
        cout << endl;
    }
    cout << "Score: " << score << endl;
}

void checkCollision() {
    Point head = snake[0];  // 修正4：明确取首元素
    if (head.x <= 0 || head.x >= WIDTH - 1 || head.y <= 0 || head.y >= HEIGHT - 1)
        gameOver = true;
    for (size_t i = 1; i < snake.size(); i++) {
        if (snake[i].x == head.x && snake[i].y == head.y) {
            gameOver = true;
            break;
        }
    }
}

public: SnakeGame() : dir(RIGHT), gameOver(false), score(0) { snake.push_back(Point(WIDTH / 2, HEIGHT / 2)); snake.push_back(Point(WIDTH / 2 - 1, HEIGHT / 2)); snake.push_back(Point(WIDTH / 2 - 2, HEIGHT / 2)); generateFood(); }

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

        Point newHead = snake[0];  // 修正5：明确取首元素
        switch (dir) {
        case UP: newHead.y--; break;
        case DOWN: newHead.y++; break;
        case LEFT: newHead.x--; break;
        case RIGHT: newHead.x++; break;
        }

        snake.insert(snake.begin(), newHead);
        if (newHead.x == food.x && newHead.y == food.y) {
            score += 10;
            generateFood();
        }
        else {
            snake.pop_back();
        }

        checkCollision();
        drawBoard();
        Sleep(100);
    }
    cout << "Game Over" << endl;
}

};

int main() { SnakeGame game; game.run(); return 0; }

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