改良版無邊界貪吃蛇（c語言做）

#include <stdio.h>
#include <Windows.h>
#include <time.h>
#include <conio.h>
#include <stdlib.h>
#define hang 25
#define lie 50
void init();
void gotoxy(int x,int y);
void begin();
void console();
void move();
void Food();
int outside();
void through_wall();
int death();

//定義蛇的位置
struct fun {
	int x;
	int y;
}snake[1000];

//定義食物位置
struct f{
	int x;
	int y;
}food;

int len=2,choose=80,food_in=0,flag=1,speed=500;

int main()
{
	//初始化地圖
	init();
	//生成食物
	Food();
	//出蛇
	begin();
	return 0;
}

void init()
{
	for (int i = 1; i <= hang; ++i)//輸出兩列
	{
		gotoxy(1, i);
		printf("*");
		gotoxy(lie, i);
		printf("*");
	}
	for (int i = 1; i <= lie; ++i)//輸出兩行
	{
		gotoxy(i, 1);
		printf("*");
		gotoxy(i, hang);
		printf("*");
	}
}

int wherex()
{
	CONSOLE_SCREEN_BUFFER_INFO pBuffer;
	GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &pBuffer);
	return (pBuffer.dwCursorPosition.X + 1);
}

int wherey()
{
	CONSOLE_SCREEN_BUFFER_INFO pBuffer;
	GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &pBuffer);
	return (pBuffer.dwCursorPosition.Y + 1);
}

//移動游標函式
void gotoxy(int x, int y)//控制游標位置
{
	COORD c;
	c.X = x - 1;
	c.Y = y - 1;
	SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), c);
}

void begin()
{
	snake[0].x = lie / 2;
	snake[0].y = hang / 2;
	while (flag==1)
	{
		Sleep(speed);
		if (_kbhit() != 0)
		{
			//呼叫控制函式
			console();
		}
		//如果吃到食物
		if (snake[0].x == food.x && snake[0].y == food.y)
		{
			Food();
			food_in = 0;
			len++;
			if (speed > 100)
			{
				speed -= 10;//吃到食物速度加快
			}
		}
		else {
			//消去之前的尾巴
			gotoxy(snake[len - 1].x, snake[len - 1].y);
			printf(" ");
		}
		//蛇頭之后的身子向前移動
		for (int i = len-1; i>0; --i)
		{
			snake[i] = snake[i - 1];
		}
		//蛇頭移動
		move();
		//輸出蛇頭
		gotoxy(snake[0].x, snake[0].y);
		printf("@");
		//輸出蛇長
		for (int i = 1; i < len; ++i)
		{
			gotoxy(snake[i].x, snake[i].y);
			printf("*");
		}
		//輸出食物
		if (food_in == 0)
		{
			food_in = 1;
			gotoxy(food.x, food.y);
			printf("$");
		}
	}
	system("cls");
	printf("游戲失敗！");
	return;
}

void console()
{
	_getch();
	choose = _getch();
	return;
}

//蛇頭移動
void move()
{
	switch (choose)
	{
	case 72:
		snake[0].y--;
		break;
	case 75:
		snake[0].x--;
		break;
	case 77:
		snake[0].x++;
		break;
	case 80:
		snake[0].y++;
		break;
	}
	through_wall();
	if (death())
	{
		flag = 0;
	}
}

//隨機產生食物
void Food()
{
	do {
		srand((unsigned) time(NULL));
		food.x = rand() % (lie-2) + 2;
		food.y = rand() % (hang - 2) + 2;
	} while (outside());
	
}

//結合Food函式，保證食物生成在蛇的外部
int outside()
{
	for (int i = 0; i < len; ++i)
	{
		if (food.x == snake[i].x&&food.y==snake[i].y)
		{
			return 1;
		}
	}
	return 0;
}

//穿墻
void through_wall()
{
	if (snake[0].x >= lie)
	{
		snake[0].x -= lie - 2;
	}
	else if (snake[0].x <= 1)
	{
		snake[0].x += lie - 2;
	}
	else if (snake[0].y >= hang)
	{
		snake[0].y -= hang - 2;
	}
	else if (snake[0].y <= 1)
	{
		snake[0].y += hang - 2;
	}
	return;
}

int death()
{
	for (int i = 1; i < len; ++i)
	{
		if (snake[0].x == snake[i].x && snake[0].y == snake[i].y)
		{
			return 1;
		}
	}
	return 0;
}