C语言实现贪吃蛇代码

C语言实现贪吃蛇，有点难写啊。

我是用VS写的

代码里有注释

我就不多说了

大家也可以直接去下载我的可执行文件

#include<stdio.h>
#include<time.h>
#include<windows.h>
#include<conio.h>
#include<stdlib.h>
#define mapheight 25
#define mapwidth 60
#define snakesize 50
struct {
	int x, y;
}food, fan[100];
struct {
	int x[snakesize];
	int y[snakesize];
	int len;
	int speed;
}snake;
int key = 'a', pre;
int changeflag = 0,sum=0;
bool predog=0 ,dog = 0;
//辅助函数：光标移动
void gotoxy(int x, int y) {
	HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE);//找到控制台的窗口
	COORD coord; //设置光标
	coord.X = x;
	coord.Y = y;
	SetConsoleCursorPosition(handle, coord);
}
void drawmap() {
	//1.圈地  2.画蛇 3.画食物 
	//○食物  □蛇身 
	srand((unsigned int)time(NULL));
	//左右边框
	for (int i = 0; i <= mapheight; i++) {
		gotoxy(0, i);
		printf("■");
		gotoxy(mapwidth, i);
		printf("■");
	}
	//上下边框
	for (int i = 0; i <= mapwidth; i +=2) {
		gotoxy(i, 0);
		printf("■");
		gotoxy(i, mapheight);
		printf("■ ");
	}
	//随机食物
	food.x = rand() % (mapwidth - 4) + 2;
	if (food.x & 1) food.x++;
	food.x = min(56, food.x);
	food.y = rand() % (mapheight - 2) + 1;
	gotoxy(food.x, food.y);
	printf("●");
	//画蛇
	snake.len = 3;
	snake.speed = 500;
	snake.x[0] = mapwidth / 2;
	snake.y[0] = mapheight / 2;
	gotoxy(snake.x[0], snake.y[0]);
	printf("@");
	for (int k = 1; k < snake.len; k++) {
		snake.x[k] = snake.x[k - 1] + 2;
		snake.y[k] = snake.y[k - 1];
		printf("#");
	}
}
void keydown() {
	//无按键
	pre = key;
	if (_kbhit()) {
		fflush(stdin);
		key = _getch();
	}
	if (!changeflag) {
		gotoxy(snake.x[snake.len - 1], snake.y[snake.len - 1]);
		printf("  ");
	}
	for (int i = snake.len - 1; i > 0; i--) {
		snake.x[i] = snake.x[i - 1];
		snake.y[i] = snake.y[i - 1];
	}
	gotoxy(snake.x[0], snake.y[0]);
	printf("#");
	if (key == 224) {
		key = _getch();
		switch (key) {
		case 72:  key = 'w'; break;
		case 80: key = 's'; break;
		case 77:key = 'd'; break;
		case 75:key = 'a'; break;
		}
	}
	if (key != 'w' && key != 's' && key != 'a' && key != 'd') key = pre;
	if (abs(key - pre) <= 4) key = pre;
	if (key != pre) {dog = dog ^ predog; predog = 0;}
	if (!dog) {
		switch (key) {
		case 'w':snake.y[0]--; break;
		case 's':snake.y[0]++; break;
		case 'a':snake.x[0] -= 2; break;
		case'd':snake.x[0] += 2; break;
		}
	}
	else {
		switch (key) {
		case 's':snake.y[0]--; break;
		case 'w':snake.y[0]++; break;
		case 'd':snake.x[0] -= 2; break;
		case'a':snake.x[0] += 2; break;
		}
	}
	gotoxy(snake.x[0], snake.y[0]);
	printf("@");
	changeflag = 0;
	gotoxy(mapheight + 2, 0);
//	gotoxy(mapwidth / 2, mapheight / 2);
//	printf("%d", key);
}
void createfood() {
	if (snake.x[0] == food.x && snake.y[0] == food.y) {
		srand((unsigned int)time(NULL));
		while (1) {
			int flag = 1;
			food.x = rand() % (mapwidth - 4) + 2;
			if (food.x & 1) food.x++;
			food.x = min(56, food.x);
			food.y = rand() % (mapheight - 2) + 1;
			for (int k = 0; k < snake.len; k++)
				if (snake.x[k] == food.x && snake.y[k] == food.y) {
					flag = 0;
					break;
				}
			if (flag) break;
		}
		gotoxy(food.x, food.y);
		printf("●");
		snake.len++;
		changeflag = 1;
	}
	for (int k = 1; k <= sum; k++)
		if (snake.x[0] == fan[k].x && snake.y[0] == fan[k].y) {
			predog ^= 1;
			break;
		}
}
int snakestatus() {
	if (!snake.x[0] || snake.y[0] == mapheight || !snake.y[0] || snake.x[0] == mapwidth) return 0;
	for (int k = 1; k < snake.len; k++)
		if (snake.x[0] == snake.x[k] && snake.y[0] == snake.y[k])
			return 0;
	return 1;
}
int main() {
	bool pd;
	gotoxy(mapwidth, mapheight + 2);
	printf("made by 罗旅洲\n");
	drawmap();
	getchar();
	while (1) {
		createfood();
		srand((unsigned int)time(NULL));
		//生成标志
		if (rand() % 2 == 0) {
			pd = 1;
			fan[++sum].x = rand() % (mapwidth - 4) + 2;
			if (fan[sum].x & 1) fan[sum].x++;
			fan[sum].x = min(56, fan[sum].x);
			fan[sum].y = rand() % (mapheight - 2) + 1;
			if (fan[sum].x == food.x && fan[sum].y == food.y)  pd = 0;
			else {
				for (int k = 0; k < snake.len; k++)
					if (snake.x[k] == fan[sum].x && snake.y[k] == fan[sum].y) {
						pd = 0;
						break;
					}
				for(int k=1;k<sum;k++)
					if (fan[sum].x == fan[k].x && fan[sum].y == fan[k].y) {
						pd = 0;
						break;
					}
			}
			if (pd) {
				gotoxy(fan[sum].x, fan[sum].y);
				printf("反");
			}
			else --sum;
		}
		snake.speed = 50;
		Sleep(snake.speed);
		keydown();
		if (!snakestatus()) break;
	}
	gotoxy(mapwidth / 2, mapheight / 2);
	printf("Gameover");
	system("pause");
	return 0;
}
/*
		for (int k = 1; k <= sum; k++)
			if (snake.x[0] == fan[k].x && snake.y[0] == fan[k].y) {
				dog = 1;
				break;
			}
*/