5.贪吃蛇项目

Snake.h

#pragma once
#include <stdio.h>
#include <graphics.h>
#include <mmsystem.h>
#include <stdlib.h>
#include <time.h>
#pragma comment(lib,"winmm.lib")

#define WINDOW_WIDTH 640//窗口的宽
#define WINDOW_HEIGHT 640//窗口的高
#define MAXNUM 100//蛇的最大节数
#define SNAKESIZE 10 //蛇的大小

typedef enum CH{ up = 72, down = 80, left = 75, right = 77 }CH;
typedef struct Coor
{
    int x;
    int y;
}COOR;
//蛇的类型,当前有多少节,蛇的方向,蛇的坐标
typedef struct Snake
{
    COOR sCor[MAXNUM];//蛇的坐标(包含100节)
    int n;//当前的节数
    CH ch;//蛇的方向
}SNAKE;

typedef struct Food
{
    Coor fCor;
    int isEat;
}FOOD;

SNAKE snake;//把蛇定义出来
FOOD food;

void GameInit();
void SnakeMove();
void SnakeDraw();
void SnakeChange();
void FoodDraw();
void FoodCoor();
void FoodEat();
BOOL SnakeBreak();

main.cpp

/**********************************************************
文件名称:main.cpp
文件描述:C语言+图形界面库实现人工智能版的贪吃蛇
编译环境:VS2013
最后修改:
<2017年1月15日> <创建工程> <池国维>
***********************************************************/
#include "Snake.h"
#include "conio.h"

//主函数
int main()
{
    initgraph(WINDOW_HEIGHT,WINDOW_WIDTH);//初始化图形界面(窗口)

    GameInit();

    while (1)
    {
        //如果没有键盘按下
        while (!_kbhit())
        {
            if (SnakeBreak())
            {
                MessageBoxA(0, "游戏结束", "提示", 1);
                break;
            }
            cleardevice();
            if (food.isEat == 0)
            {
                FoodCoor();
            }
            FoodDraw();
            FoodEat();
            SnakeMove();
            Sleep(100);
        }

        SnakeChange();
    }

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

void GameInit()
{
    setbkcolor(LIGHTGRAY);
    //播放音乐
    mciSendString(L"open ./甩葱歌.mp3 alias backmusic", 0, 0, 0);
    mciSendString(L"play backmusic repeat", 0, 0, 0);

    //初始化一条蛇
    rectangle(0, 0, SNAKESIZE, SNAKESIZE);
    snake.ch = down;//方向
    snake.n = 1;//节数
    snake.sCor[0].x = 0;//第一节蛇的坐标
    snake.sCor[0].y = 0;

    food.isEat = 0; //被吃掉
}

//让蛇移动
void SnakeMove()
{
    //不断交换相邻节的坐标
    for (int i = snake.n - 1; i > 0; i--)
    {
        snake.sCor[i].x = snake.sCor[i - 1].x;
        snake.sCor[i].y = snake.sCor[i - 1].y;
    }

    switch (snake.ch)
    {
    case up:
        snake.sCor[0].y -= SNAKESIZE;
        break;
    case down:
        snake.sCor[0].y += SNAKESIZE;
        break;
    case left:
        snake.sCor[0].x -= SNAKESIZE;    
        break;
    case right:
        snake.sCor[0].x += SNAKESIZE;
        break;
    }
    //蛇的绘制
    SnakeDraw();
}

//蛇的绘制
void SnakeDraw()
{
    for (int i = 0; i < snake.n; i++)
    {
        rectangle(snake.sCor[i].x, snake.sCor[i].y, snake.sCor[i].x + SNAKESIZE, snake.sCor[i].y + SNAKESIZE);
    }
}

//改变方向
void SnakeChange()
{
    char  move;

    move = _getch();  //getchar()显示回文 enter键完成 getch()不显示回文 接受键盘的字符

    switch (move)
    {
    case up:
        if (snake.ch != down)
            snake.ch = up;
        break;
    case down:
        if (snake.ch != up)
            snake.ch = down;
        break;
    case left:
        if (snake.ch != right)
            snake.ch = left;
        break;
    case right:
        if (snake.ch != left)
            snake.ch = right;
        break;
    }
}

//画食物
void FoodDraw()
{
    roundrect(food.fCor.x, food.fCor.y, food.fCor.x + SNAKESIZE, food.fCor.y + SNAKESIZE, 10, 10);
}

//得到食物的坐标
void FoodCoor()
{
    food.fCor.x = rand() % (WINDOW_WIDTH / SNAKESIZE) * SNAKESIZE;
    food.fCor.y = rand() % (WINDOW_HEIGHT / SNAKESIZE) * SNAKESIZE;

    food.isEat = 1;
}

//判断食物
void FoodEat()
{
    if (snake.sCor[0].x == food.fCor.x && snake.sCor[0].y == food.fCor.y)
    {
        snake.n++;

        food.isEat = 0;
    }
}

//撞墙判断 
//撞到自己 for去遍历数组 判定蛇头的坐标有没有和蛇的身上某一节蛇身重合
BOOL SnakeBreak()
{
    if (snake.sCor[0].x<0 || snake.sCor[0].x > WINDOW_WIDTH || 
        snake.sCor[0].y<0 || snake.sCor[0].y > WINDOW_HEIGHT)
    {
        //结束
        //MessageBoxA(0, "游戏结束", "提示",1);
        return TRUE;
    }

    //撞到自己
    for (int i = snake.n - 1; i > 0; i--)
    {
        if (snake.sCor[0].x == snake.sCor[i].x &&
            snake.sCor[0].y == snake.sCor[i].y)
        {
            return TRUE;
            //MessageBoxA(0, "游戏结束", "提示", 1);
        }
    }

    return FALSE;
}