c语言写贪吃蛇小游戏代码

贪吃蛇是一种经典的小游戏，以下是C语言实现贪吃蛇小游戏的代码：

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <windows.h>

#define WIDTH 30
#define HEIGHT 20
#define SNAKE_MAX_LENGTH 100

int score = 0;
int speed = 200;

typedef struct _COORD {
    int x;
    int y;
} COORD;

typedef struct _SNAKE {
    COORD body[SNAKE_MAX_LENGTH];
    int length;
    int direction;
} SNAKE;

typedef struct _FOOD {
    COORD position;
} FOOD;

void gotoxy(int x, int y) {
    COORD pos = {x, y};
    HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
    SetConsoleCursorPosition(hOut, pos);
}

void drawBorder() {
    int i;
    for (i = 0; i < WIDTH + 2; i++) {
        printf("#");
    }
    printf("\n");

    for (i = 0; i < HEIGHT; i++) {
        printf("#");
        gotoxy(WIDTH + 1, i + 1);
        printf("#");
    }

    printf("\n");
    for (i = 0; i < WIDTH + 2; i++) {
        printf("#");
    }
    printf("\n");
}

void initSnake(SNAKE *snake) {
    snake->length = 3;
    snake->direction = 'd';
    snake->body[0].x = 5;
    snake->body[0].y = 3;
    snake->body[1].x = 4;
    snake->body[1].y = 3;
    snake->body[2].x = 3;
    snake->body[2].y = 3;
}

void drawSnake(SNAKE *snake) {
    int i;
    for (i = 0; i < snake->length; i++) {
        gotoxy(snake->body[i].x, snake->body[i].y);
        printf("*");
    }
}

void moveSnake(SNAKE *snake) {
    int i;
    for (i = snake->length - 1; i > 0; i--) {
        snake->body[i].x = snake->body[i - 1].x;
        snake->body[i].y = snake->body[i - 1].y;
    }

    switch (snake->direction) {
        case 'w':
            snake->body[0].y--;
            break;        case 's':
            snake->body[0].y++;
            break;
        case 'a':
            snake->body[0].x--;
            break;
        case 'd':
            snake->body[0].x++;
            break;
    }
}

void generateFood(FOOD *food, SNAKE *snake) {
    int x, y;
    do {
        x = rand() % WIDTH + 1;
        y = rand() % HEIGHT + 1;
    } while (isSnake(snake, x, y));

    food->position.x = x;
    food->position.y = y;
}

void drawFood(FOOD *food) {
    gotoxy(food->position.x, food->position.y);
    printf("@");
}

int isSnake(SNAKE *snake, int x, int y) {
    int i;
    for (i = 0; i < snake->length; i++) {
        if (snake->body[i].x == x && snake->body[i].y == y) {
            return 1;
        }
    }
    return 0;
}

int isHitWall(SNAKE *snake) {
    if (snake->body[0].x == 0 || snake->body[0].x == WIDTH + 1 || snake->body[0].y == 0 || snake->body[0].y == HEIGHT + 1) {
        return 1;
    }
    return 0;
}

int isEatFood(SNAKE *snake, FOOD *food) {
    if (snake->body[0].x == food->position.x && snake->body[0].y == food->position.y) {
        return 1;
    }
    return 0;
}

void updateScore() {
    gotoxy(WIDTH + 5, 5);
    printf("Score: %d", score);
}

void updateSpeed() {
    gotoxy(WIDTH + 5, 6);
    printf("Speed: %d", speed);
}

void gameOver() {
    system("cls");
    printf("Game Over!\n");
    printf("Your score is %d\n", score);
    exit(0);
}

int main() {
    SNAKE snake;
    FOOD food;

    srand(time(NULL));

    initSnake(&snake);
    generateFood(&food, &snake);

    drawBorder();
    drawSnake(&snake);
    drawFood(&food);

    while (1) {
        if (_kbhit()) {
            char ch = _getch();
            switch (ch) {
                case 'w':
                case 's':
                case 'a':
                case 'd':
                    if (abs(ch - snake.direction) != 2) {
                        snake.direction = ch;
                    }
                    break;
                case 'q':
                    gameOver();
                    break;
            }
        }

        moveSnake(&snake);

        if (isHitWall(&snake) || isSnake(&snake, snake.body[0].x, snake.body[0].y)) {
            gameOver();
        }

        if (isEatFood(&snake, &food)) {
            snake.length++;
            score += 10;
            speed -= 10;
            if (speed < 50) {
                speed = 50;
            }
            generateFood(&food, &snake);
            updateScore();
            updateSpeed();
        }

        system("cls");
        drawBorder();
        drawSnake(&snake);
        drawFood(&food);

        Sleep(speed);
    }

    return 0;
}