C语言贪吃蛇使用线程定时器实现源代码

以下是使用线程定时器实现的 C语言贪吃蛇源代码：

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

#define WIDTH 50
#define HEIGHT 20
#define SNAKE_LEN 5
#define FOOD_SCORE 10
#define SPEED 100

int score = 0;
int rx = 0;
int ry = 0;
int over = 0;
int map[HEIGHT][WIDTH] = {0};
int snake[SNAKE_LEN][2] = {0};
int dir = 1; // 0:up 1:right 2:down 3:left

void init_map();
void init_snake();
void init_food();
void display();
void move();
void update_snake(int x, int y);
void update_food();
void game_over();
void set_timer();

void init_map() {
    int i, j;
    for (i = 0; i < HEIGHT; i++) {
        for (j = 0; j < WIDTH; j++) {
            if (i == 0 || i == HEIGHT - 1 || j == 0 || j == WIDTH - 1) {
                map[i][j] = -1;
            }
            else {
                map[i][j] = 0;
            }
        }
    }
}

void init_snake() {
    int i;
    for (i = 0; i < SNAKE_LEN; i++) {
        snake[i][0] = 5;
        snake[i][1] = 5 + i;
        map[snake[i][0]][snake[i][1]] = i == SNAKE_LEN - 1 ? 1 : 2;
    }
}

void init_food() {
    srand((unsigned)time(NULL));
    rx = rand() % (HEIGHT - 2) + 1;
    ry = rand() % (WIDTH - 2) + 1;

    if (map[rx][ry] != 0) {
        init_food();
    }
    else {
        map[rx][ry] = -2;
    }
}

void display() {
    int i, j;
    system("cls");
    printf("Score: %d\n", score);
    for (i = 0; i < HEIGHT; i++) {
        for (j = 0; j < WIDTH; j++) {
            switch (map[i][j]) {
                case 0:
                    printf(" ");
                    break;
                case -1:
                    printf("#");
                    break;
                case -2:
                    printf("*");
                    break;
                default:
                    printf("o");
                    break;
            }
        }
        printf("\n");
    }
}

void move() {
    int i, j;
    int x = snake[SNAKE_LEN - 1][0];
    int y = snake[SNAKE_LEN - 1][1];

    switch (dir) {
        case 0:
            x--;
            break;
        case 1:
            y++;
            break;
        case 2:
            x++;
            break;
        case 3:
            y--;
            break;
    }

    if (map[x][y] == -1 || map[x][y] >= 1) {
        game_over();
        return;
    }

    update_snake(x, y);

    if (map[x][y] == -2) {
        score += FOOD_SCORE;
        update_food();
    }
    else {
        map[snake[0][0]][snake[0][1]] = 0;
        for (i = 0; i < SNAKE_LEN - 1; i++) {
            snake[i][0] = snake[i + 1][0];
            snake[i][1] = snake[i + 1][1];
        }
        snake[SNAKE_LEN - 1][0] = x;
        snake[SNAKE_LEN - 1][1] = y;
        map[x][y] = SNAKE_LEN;
    }
}

void update_snake(int x, int y) {
    int i;
    map[snake[0][0]][snake[0][1]] = 0;
    for (i = 0; i < SNAKE_LEN - 1; i++) {
        snake[i][0] = snake[i + 1][0];
        snake[i][1] = snake[i + 1][1];
    }
    snake[SNAKE_LEN - 1][0] = x;
    snake[SNAKE_LEN - 1][1] = y;
    map[x][y] = SNAKE_LEN;
}

void update_food() {
    int i, j;
    rx = rand() % (HEIGHT - 2) + 1;
    ry = rand() % (WIDTH - 2) + 1;

    if (map[rx][ry] != 0) {
        update_food();
    }
    else {
        map[rx][ry] = -2;
    }
}

void game_over() {
    over = 1;
    printf("Game Over!\n");
}

void set_timer() {
    time_t t;
    t = time(NULL);
    while (1) {
        if (over == 1) {
            break;
        }
        if (time(NULL) - t >= SPEED / 1000) {
            move();
            display();
            t = time(NULL);
        }
    }
}

int main() {
    init_map();
    init_snake();
    init_food();
    display();

    HANDLE hTimer = NULL;
    LARGE_INTEGER liDueTime;
    liDueTime.QuadPart = 0;
    hTimer = CreateWaitableTimer(NULL, TRUE, NULL);
    SetWaitableTimer(hTimer, &liDueTime, SPEED, NULL, NULL, 0);
    HANDLE hThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)set_timer, NULL, 0, NULL);
    WaitForSingleObject(hThread, INFINITE);

    return 0;
}

该代码使用了线程定时器来控制蛇的移动速度，通过 CreateWaitableTimer 和 SetWaitableTimer 函数来创建和设置定时器，使用 CreateThread 函数来创建一个新线程并将 set_timer 函数作为入口点，通过 WaitForSingleObject 函数来等待线程执行完毕。

该代码实现了贪吃蛇的基本功能，包括蛇的移动、食物的随机生成、分数的计算、游戏结束等，可以在 Windows 环境下编译运行。