本文实例为大家分享了基于easyx的C++实现贪吃蛇的具体代码，供大家参考，具体内容如下

本代码来自于easyx讨论群的分享

先上效果图，其实也只是画了简单的圈圈代表蛇和食物，背景就是黑色的。

#include "stdafx.h"#include <iostream>#include <stdlib.h>#include <time.h>#include <conio.h>#include <graphics.h> #define N 100 using namespace std; enum moved { UP, DOWN, LEFT, RIGHT };class Snake {private: struct { //整条蛇的信息 int x; int y; }snake[100]; struct { int life; //为1代表还活着，为0代表已经死了 int length; //代表蛇的长度，初始值为3 enum moved direction; //前进方向 }snake_head; struct { //食物的信息 int x; int y; }food;public: void display(); //显示界面 void initSnake(); //随机生成蛇 void move();//蛇移动 void boundary_check();//边界判断 void _food();//生成食物 int food_eatcheck();//检查是否吃到食物,吃到则返回1，否则返回0 int snake_eat();//判断贪吃蛇是否咬到自己，咬到则返回1，否则返回0 void run(); //主要运行函数};void Snake::display() { initgraph(800, 600); setbkcolor(WHITE); //设置背景颜色为白色 cleardevice(); //将背景颜色刷新到窗口上 setfillcolor(BLACK); //设置填充的颜色为黑色，之后话填充的图形都是这个颜色 solidrectangle(20, 560, 560, 20);//这个区域每20*20为一个单位，一共有27*27个单位}//构造函数void Snake::initSnake() { srand((unsigned)time(NULL)); //因为一开始蛇是向右走的，所以不能让蛇初始化在太靠右边的地方 int x = rand() % 22 + 3; //范围是3-24 int y = rand() % 22 + 3; //加三是因为初始的长度是3，必须让整条蛇都在范围内 this->snake[0].x = x * 20 + 10;//加十是因为要确定圆心的位置 this->snake[0].y = y * 20 + 10; //默认蛇一开始是横着的所以三段的y坐标相同 this->snake[1].y = this->snake[2].y = this->snake[0].y; this->snake[1].x = this->snake[0].x - 20; this->snake[2].x = this->snake[0].x - 40; setfillcolor(GREEN); //设置填充色为绿色 solidcircle(this->snake[0].x, this->snake[0].y, 10); //画圆 solidcircle(this->snake[1].x, this->snake[1].y, 10); solidcircle(this->snake[2].x, this->snake[2].y, 10); this->snake_head.length = 3; this->snake_head.life = 1; this->snake_head.direction = RIGHT;}void Snake::move() { char ch; if (_kbhit()) { //如果有输入的话就返回1，没有输入的话就返回0 ch = _getch();//获取输入的字符 switch (ch) { case 'w' :if (this->snake_head.direction != DOWN) this->snake_head.direction = UP; break; case 'W':if (this->snake_head.direction != DOWN) this->snake_head.direction = UP; break; case 's' :if (this->snake_head.direction != UP) this->snake_head.direction = DOWN; break; case 'S':if (this->snake_head.direction != UP) this->snake_head.direction = DOWN; break; case 'a':if (this->snake_head.direction != RIGHT) this->snake_head.direction = LEFT; break; case 'A':if (this->snake_head.direction != RIGHT) this->snake_head.direction = LEFT; break; case 'd':if (this->snake_head.direction != LEFT) this->snake_head.direction = RIGHT; break; case 'D':if (this->snake_head.direction != LEFT) this->snake_head.direction = RIGHT; break; default:break; } } //将蛇尾变成黑色 int i = this->snake_head.length - 1; setfillcolor(BLACK); solidcircle(snake[i].x, snake[i].y, 10); //接下来遍历每个身体，每个身体都更新为前一个身体，蛇头除外 for (; i > 0; i--) { this->snake[i].x = this->snake[i - 1].x; this->snake[i].y = this->snake[i - 1].y; } switch (this->snake_head.direction) { case RIGHT:this->snake[0].x += 20; break; case LEFT:this->snake[0].x -= 20; break; case UP:this->snake[0].y -= 20; break; case DOWN:this->snake[0].y += 20; break; default:break; } setfillcolor(GREEN); solidcircle(this->snake[0].x, this->snake[0].y, 10);//绘制蛇头 Sleep(1000);}void Snake::boundary_check() { if (this->snake[0].x <= 30 || this->snake[0].x >= 550 || this->snake[0].y <= 30 || this->snake[0].y >= 550) { this->snake_head.life = 0; }}void Snake::_food() { srand((unsigned)time(NULL)); int x = rand() % 21 + 3; //范围是3-23 int y = rand() % 21 + 3; this->food.x = x * 20 + 10; this->food.y = y * 20 + 10; setfillcolor(YELLOW); solidcircle(this->food.x, this->food.y, 10);}int Snake::food_eatcheck() { if (this->snake[0].x == this->food.x && this->snake[0].y == this->food.y) { //如果满足条件就是吃到食物了 this->snake_head.length++;//长度加一 setfillcolor(GREEN); solidcircle(food.x, food.y, 10); int k = this->snake_head.length; //吃到食物之后最后要在尾巴处加一个长度 switch (this->snake_head.direction) { case RIGHT:this->snake[k - 1].x = this->snake[k - 2].x - 20; this->snake[k - 1].y = this->snake[k - 2].y; break; case LEFT:this->snake[k - 1].x = this->snake[k - 2].x += 20; this->snake[k - 1].y = this->snake[k - 2].y; break; case UP:this->snake[k - 1].x = this->snake[k - 2].x; this->snake[k - 1].y = this->snake[k - 2].y + 20; break; case DOWN:this->snake[k - 1].x = this->snake[k - 2].x; this->snake[k - 1].y = this->snake[k - 2].y - 20; break; default:break; } setfillcolor(GREEN); solidcircle(this->snake[k - 1].x, this->snake[k - 1].y, 10); return 1; } return 0;}int Snake::snake_eat() { int i; for (i = 1; i < this->snake_head.length; i++) { if (this->snake[i].x == this->snake[0].x && this->snake[i].y == this->snake[0].y) { return 1; } } return 0;}void Snake::run() { display(); //显示游戏界面 initSnake(); _food(); //生成第一个食物 while (true) { move(); //蛇移动 if (snake_eat() == 1) { //自己吃到自己了，游戏失败 cout << "自己吃到自己了，游戏失败" << endl; break; } boundary_check();//判断是否撞墙 if (this->snake_head.life == 0) { //撞墙了 cout << "撞墙了，游戏结束" << endl; break; } if (food_eatcheck() == 1) { _food(); //吃到食物就重新生成一个食物 } }} int main() { Snake s; s.run(); return 0;}

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