// ConsoleApplication3.cpp : 定义控制台应用程序的入口点。

//

#include "stdafx.h"

#include<iostream>

#include<windows.h>

#include<time.h>

#include<stdlib.h>

#include<conio.h>

#define N 21

using namespace std;

void gotoxy(int x, int y)//位置函数

{

COORD pos;

pos.X = 2 * x;

pos.Y = y;

SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);

}

void color(int a)//颜色函数

{

SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), a);

}

void init(int apple[2])//初始化函数（初始化围墙、显示信息、苹果）

{

int i, j;//初始化围墙

int wall[N + 2][N + 2] = { { 0 } };

for (i = 1; i <= N; i++)

{

for (j = 1; j <= N; j++)

wall[i][j] = 1;

}

color(11);

for (i = 0; i<N + 2; i++)

{

for (j = 0; j<N + 2; j++)

{

if (wall[i][j])

cout << "■";

else cout << "□";

}

cout << endl;

}

gotoxy(N + 3, 1);//显示信息

color(20);

cout << "按 W S A D 移动方向" << endl;

gotoxy(N + 3, 2);

color(20);

cout << "按任意键暂停" << endl;

gotoxy(N + 3, 3);

color(20);

cout << "得分：" << endl;

apple[0] = rand() % N + 1;//苹果

apple[1] = rand() % N + 1;

gotoxy(apple[0], apple[1]);

color(12);

cout << "●" << endl;

}

int main()

{

int i, j;

int** snake = NULL;

int apple[2];

int score = 0;

int tail[2];

int len = 3;

char ch = 'p';

srand((unsigned)time(NULL));

init(apple);

snake = (int**)realloc(snake, sizeof(int*)*len);

for (i = 0; i<len; i++)

snake[i] = (int*)malloc(sizeof(int) * 2);

for (i = 0; i<len; i++)

{

snake[i][0] = N / 2;

snake[i][1] = N / 2 + i;

gotoxy(snake[i][0], snake[i][1]);

color(14);

cout << "★" << endl;

}

while (1)//进入消息循环

{

tail[0] = snake[len - 1][0];

tail[1] = snake[len - 1][1];

gotoxy(tail[0], tail[1]);

color(11);

cout << "■" << endl;

for (i = len - 1; i>0; i--)

{

snake[i][0] = snake[i - 1][0];

snake[i][1] = snake[i - 1][1];

gotoxy(snake[i][0], snake[i][1]);

color(14);

cout << "★" << endl;

}

if (kbhit())

{

gotoxy(0, N + 2);

ch = getche();

}

switch (ch)

{

case 'w':snake[0][1]--; break;

case 's':snake[0][1]++; break;

case 'a':snake[0][0]--; break;

case 'd':snake[0][0]++; break;

default: break;

}

gotoxy(snake[0][0], snake[0][1]);

color(14);

cout << "★" << endl;

Sleep(abs(200 - 0.5*score));

if (snake[0][0] == apple[0] && snake[0][1] == apple[1])//吃掉苹果后蛇分数加1，蛇长加1

{

score++;

len++;

snake = (int**)realloc(snake, sizeof(int*)*len);

snake[len - 1] = (int*)malloc(sizeof(int) * 2);

apple[0] = rand() % N + 1;

apple[1] = rand() % N + 1;

gotoxy(apple[0], apple[1]);

color(12);

cout << "●" << endl;

gotoxy(N + 5, 3);

color(20);

cout << score << endl;

}

if (snake[0][1] == 0 || snake[0][1] == N || snake[0][0] == 0 || snake[0][0] == N)//撞到围墙后失败

{

gotoxy(N / 2, N / 2);

color(30);

cout << "Game over" << endl;

for (i = 0; i<len; i++)

free(snake[i]);

Sleep(INFINITE);

exit(0);

}

}

return 0;

}