C++加EasyX简单贪吃蛇游戏

游戏规则就不多说了

新建一个C++控制台应用，项目结构如下

snake.h包含了用到的所有方法的定义
snake.cpp包含了所有方法的实现

snake.h代码如下

#pragma once
#include <iostream>
#include<graphics.h>
#include<time.h>
#include<conio.h>
#include<vector>
using namespace std;


void initSnaker();//初始化????
void drawSnake();//画????
void  moveSnaker();//移动????
void keyDown();//键盘事件
void  initFood(int num);//初始化食物
void drawFood();//画食物
void eatFood();//吃食物
void showGrade();//显示分数
bool gameOver();//判断是否挂掉

snake.cpp代码如下

#include "snake.h"


//坐标
struct  point
{
    int x;
    int y;
};

//????
struct snaker
{
    vector<point> xy;	// 每节坐标
    point next; //下一节预留位置
    vector<COLORREF> color;//每一节的颜色
    int num;//长度
    int position;//方向
}snaker;

//食物
struct Food
{
    point fxy[10];//食物座标
    int grade;//分数
    int num = 1;//食物总数
    COLORREF color[10];//实物颜色
}food;

//蛇的方向
enum  position
{
    u,
    d,
    l,
    r
};
//初始化????
void initSnaker()
{
    point xy;
    xy.x = 20;
    xy.y = 0;
    snaker.xy.push_back(xy);
    snaker.color.push_back(RGB(rand() % 256, rand() % 256, rand() % 256));
    xy.x = 10;
    xy.y = 0;
    snaker.xy.push_back(xy);
    snaker.color.push_back(RGB(rand() % 256, rand() % 256, rand() % 256));
    xy.x = 0;
    xy.y = 0;
    snaker.xy.push_back(xy);
    snaker.color.push_back(RGB(rand() % 256, rand() % 256, rand() % 256));
    snaker.num = 3;
    snaker.position = r;
}


//画????
void drawSnake()
{
    for (int i = 0; i < snaker.num; i++)
    {
        setfillcolor(snaker.color[i]);
        fillrectangle(snaker.xy[i].x, snaker.xy[i].y, snaker.xy[i].x + 10, snaker.xy[i].y + 10);
    }
}

//移动蛇
void  moveSnaker()
{
    snaker.next = snaker.xy[snaker.num - 1];
    //除蛇头以外其他都移动到前一个位置
    for (int i = snaker.num - 1; i >= 1; i--)
    {
        snaker.xy[i] = snaker.xy[i - 1];
    }
    //移动蛇头
    switch (snaker.position)
    {
    case u:
        snaker.xy[0].y -= 10;
        break;
    case d:
        snaker.xy[0].y += 10;
        break;
    case l:
        snaker.xy[0].x -= 10;
        break;
    case r:
        snaker.xy[0].x += 10;
        break;
    default:
        break;
    }
}

void keyDown()
{
    char key = _getch();
    if (key == -32)//方向键判断
    {
        key = -_getch();//具体的方向键
    }
    switch (key)
    {
    case 'w':
    case 'W':
    case -72:
        if (snaker.position != d)
            snaker.position = u;
        break;
    case 's':
    case 'S':
    case -80:
        if (snaker.position != u)
            snaker.position = d;
        break;
    case 'a':
    case 'A':
    case -75:
        if (snaker.position != r)
            snaker.position = l;
        break;
    case 'd':
    case 'D':
    case -77:
        if (snaker.position != l)
            snaker.position = r;
        break;
    }
}
//初始化实物
void  initFood(int num)//食物编号
{
    food.fxy[num].x = rand() % 80 * 10;
    food.fxy[num].y = rand() % 60 * 10;
    for (int i = 0; i < snaker.num; i++)
    {
        if (food.fxy[num].x == snaker.xy[i].x && food.fxy[num].y == snaker.xy[i].y) //判断食物是否再????身上
        {
            food.fxy[num].x = rand() % 80 * 10;
            food.fxy[num].y = rand() % 600 * 10;
        }
    }
}
//画食物
void drawFood()
{
    for (int i = 0; i <= food.num - 1; i++)
    {
        setfillcolor(food.color[i] = RGB(rand() % 256, rand() % 253, rand() % 256));
        fillrectangle(food.fxy[i].x, food.fxy[i].y, food.fxy[i].x + 10, food.fxy[i].y + 10);
    }
}

//吃食物
void eatFood()
{
    for (int i = 0; i <= food.num - 1; i++)
    {
        if (snaker.xy[0].x == food.fxy[i].x && snaker.xy[0].y == food.fxy[i].y)
        {
            snaker.num += 1;
            snaker.xy.push_back(snaker.next);//新增的放大蛇尾
            snaker.color.push_back(food.color[i]);//新增的颜色等于吃掉的食物的颜色
            food.grade += 100;//吃掉一个食物得100分
            initFood(i);
            if (food.num < 10 && food.grade % 500 == 0 && food.grade > 0)
            {
                food.num++;									// 每得 500 分，增加一个食物，但食物总数不超过 10 个
                initFood(food.num - 1);						// 初始化新增加的食物
            }
        }
    }
}

//显示分数
void showGrade()
{
    wchar_t g[20] = L"";
    swprintf_s(g, L"分数：%d", food.grade);
    outtextxy(650, 50, g);
}


//游戏结束
bool gameOver()
{
    //撞墙 分为四个方向
    if (snaker.position == l && snaker.xy[0].x < -10) return true;
    if (snaker.position == r && snaker.xy[0].x > 810) return  true;
    if (snaker.position == u && snaker.xy[0].y < -10)return true;
    if (snaker.position == d && snaker.xy[0].y > 610)return true;

    //撞自己 不包括蛇头 分为四个方向
    for (int i = 1; i < snaker.num; i++)
    {
        if (snaker.xy[0].x <= snaker.xy[i].x + 10 && snaker.xy[0].x >= snaker.xy[i].x && snaker.xy[0].y == snaker.xy[i].y && snaker.position == l)
            return true;
        if (snaker.xy[0].x + 10 >= snaker.xy[i].x && snaker.xy[0].x + 10 <= snaker.xy[i].x + 10 && snaker.xy[0].y == snaker.xy[i].y && snaker.position == r)
            return true;
        if (snaker.xy[0].y <= snaker.xy[i].y + 10 && snaker.xy[0].y >= snaker.xy[i].y && snaker.xy[0].x == snaker.xy[i].x && snaker.position == u)
            return true;
        if (snaker.xy[0].y + 10 >= snaker.xy[i].y && snaker.xy[0].y + 10 <= snaker.xy[i].y + 10 && snaker.xy[0].x == snaker.xy[i].x && snaker.position == d)
            return true;
    }
    return false;


}

主程序代码如下

// 简单贪吃蛇.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
//

#include <iostream>
#include<graphics.h>
#include<time.h>
#include<conio.h>
#include<vector>
#include "snake.h"
using namespace std;


int main()
{
    initgraph(800, 600);   
    setbkcolor(RGB(95, 183, 72));
    cleardevice();
    srand((unsigned)time(NULL));
    initSnaker();
    drawSnake();
    initFood(0);
    while (!gameOver())
    {
        Sleep(150);
        BeginBatchDraw();			// 开始批量绘图，作用是避免闪烁
        cleardevice();
        if (_kbhit()) keyDown();
        moveSnaker();
        eatFood();
        drawFood();
        drawSnake();
        showGrade();
        EndBatchDraw();				// 结束批量绘图
    }
     outtextxy(330, 300, L"游戏结束，按任意键继续");
    _getch();						// 按任意键退出
    return 0;
}

运行效果如图