贪吃蛇(C/CPP)实现

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效果如下图所展示：

/*
	贪吃蛇
	snake.cpp
	涉及内容：结构体、控制语句、循环、+easyx图形库
*/
#include<stdio.h>
#include<graphics.h>
#include<conio.h>	
#include<mmsystem.h>	//播放音乐
#pragma comment(lib,"winmm.lib")	//播放音乐
#define WIN_WIDTH 640
#define WIN_HEIGHT 480
#define MAX_SNAKE 100	//蛇的最大节数
enum DIR	//蛇的方向
{
	UP,
	DOWN,
	LEFT,
	RIGHT,
};
struct Snake_tlg	//蛇的结构体
{
	int num;
	int dir;//蛇的方向
	int size;//蛇的宽度和高度
	int score;
	POINT coor[MAX_SNAKE];
	/*
	typedef struct tagPOINT
	{
		LONG x;
		LONG y;
	}POINT;
	*/
}snake;
struct Food_tlg
{
	POINT fd;
	int flag;
	DWORD color;
}food;
void GameInit()
{
	srand(GetTickCount());
	//初始化蛇
	snake.num = 3;
	snake.dir = RIGHT;
	snake.score = 0;
	snake.size = 10;
	snake.coor[2].x = 0;
	snake.coor[2].y = 0;
	snake.coor[1].x = snake.size;
	snake.coor[1].y = 0;
	snake.coor[0].x = 2 * snake.size;
	snake.coor[0].y = 0;
	//初始化食物
	food.fd.x = rand() % (WIN_WIDTH/10)*10;
	food.fd.y = rand() % (WIN_HEIGHT/10)*10;
	food.flag = 1;
	food.color = RGB(rand() % 256, rand() % 256, rand() % 256);
	mciSendString("open BANG.mp3 alias a", 0, 0, 0);	//播放音乐
	mciSendString("play a repeat", 0, 0, 0);	//播放音乐
}
void GameDraw()
{
	//设置背景颜色
	setbkcolor(RGB(105,160,141));
	cleardevice();
	//画蛇
	for (int i = 0; i < snake.num; i++)
	{
		setlinecolor(BLACK);
		setfillcolor(YELLOW);
		fillrectangle(snake.coor[i].x, snake.coor[i].y, snake.coor[i].x+snake.size, snake.coor[i].y+snake.size);
		printf("%d%d\n", snake.coor[i].x, snake.coor[i].x);
	}
	//画食物
	if (food.flag == 1)
	{
		setfillcolor(food.color);
		fillellipse(food.fd.x, food.fd.y, food.fd.x + 10, food.fd.y + 10);
	}
	//显示分数
	char temp[20] = "";
	sprintf(temp, "分数: %d", snake.score);
	setbkmode(TRANSPARENT);
	outtextxy(20, 20, temp);
}
void SnakeMove()
{
	for (int i = snake.num - 1; i > 0; i--) //从最后一节开始，每一节蛇都等于前一节蛇的上一次坐标
	{
		snake.coor[i].x = snake.coor[i - 1].x;
		snake.coor[i].y = snake.coor[i - 1].y;
	}
	switch (snake.dir)
	{
	case UP:
		snake.coor[0].y -= 10;
		if (snake.coor[0].y + 10 <= 0)
		{
			snake.coor[0].y = WIN_HEIGHT;
		}
		break;
	case DOWN:
		snake.coor[0].y += 10;
		if (snake.coor[0].y - 10 >= WIN_HEIGHT)
		{
			snake.coor[0].y = 0;
		}
		break;
	case LEFT:
		snake.coor[0].x -= 10;
		if (snake.coor[0].x + 10 <= 0)
		{
			snake.coor[0].x = WIN_WIDTH;
		}
		break;
	case RIGHT:
		snake.coor[0].x += 10;
		if (snake.coor[0].x - 10 >= WIN_WIDTH)
		{
			snake.coor[0].x = 0;
		}
		break;
	default:
		break;
	}
}
void KeyControl()
{
	//使用win32API获取键盘信息
	if (GetAsyncKeyState(VK_UP)&& snake.dir!=DOWN)
	{
		snake.dir = UP;
	}
	if (GetAsyncKeyState(VK_DOWN) && snake.dir != UP)
	{
		snake.dir = DOWN;
	}
	if (GetAsyncKeyState(VK_LEFT) && snake.dir != RIGHT)
	{
		snake.dir = LEFT;
	}
	if (GetAsyncKeyState(VK_RIGHT) && snake.dir != LEFT)
	{
		snake.dir = RIGHT;
	}
}
void EatFood()
{
	if (snake.coor[0].x == food.fd.x&&snake.coor[0].y == food.fd.y&&food.flag ==1)
	{
		snake.num++;
		snake.score += 10;
		food.flag = 0;
	}
	if (food.flag == 0)
	{
		food.fd.x = rand() % (WIN_WIDTH / 10) * 10;
		food.fd.y = rand() % (WIN_HEIGHT / 10) * 10;
		food.flag = 1;
		food.color = RGB(rand() % 256, rand() % 256, rand() % 256);
	}
}
void DontEatSelf()
{
	for (int i = 4; i < snake.num; i++)
	{
		if (snake.coor[0].x == snake.coor[i].x&&snake.coor[0].y == snake.coor[i].y)
		{
			outtextxy(200, 200, "Game Over!");
			_getch();
			exit(666);
		}
	}
}
int main()
{
	initgraph(WIN_WIDTH, WIN_HEIGHT, SHOWCONSOLE);//初始化一个图形窗口
	GameInit();
	DWORD t1, t2;
	t1 = t2 = GetTickCount();
	BeginBatchDraw();
	while (1)
	{
		if (t2 - t1 > 100)
		{
			SnakeMove();
			t1 = t2;
		}
		t2 = GetTickCount();
		GameDraw();
		EatFood();
		DontEatSelf();
		FlushBatchDraw();
		KeyControl();
	}

	getchar();
	closegraph();
	return 0;
}

源代码及其文件的分享链接：wwa.lanzous.com/ibxFPelen5c