c++ 贪吃蛇小游戏（初始版）

用c++类

创建头文件

#include"coordinate.h"
struct coord//坐标
{		
	int x;
	int y;
};

1、蛇的处理

创建头文件

#include"snake.h"
#pragma once//防止头文件包含
#include<iostream>
#include<graphics.h>//图形库函数
#include<conio.h>
#include"coordinate.h"//包含坐标的头文件
#include<time.h>//随机函数头文件
using namespace std;

class Snake
{
public:
	Snake();//初始化
	coord Snake_l(int i);//返回蛇的坐标
	int Snake_s();//返回蛇的长度
	int Snake_d();//返回蛇的方向
	void Draw_Snake();//画蛇
	void Oper_Snake();//操作蛇
	void across_wall();//过墙
protected:
	coord Snake_length[100];//蛇最长为100结
	int Snake_size;//蛇的长度
	int Snake_dir;//蛇的方向
	enum
	{
		right, left, up, down
	};
};

创建.cpp文件

#include"snake.h"

Snake::Snake()
{
	this->Snake_size = 3;
	this->Snake_dir = right;
	for (int i = Snake_size-1; i >= 0; i--)
	{
		this->Snake_length[i].x=(Snake_size-i)*10;
		this->Snake_length[i].y=10;
	}
}
coord Snake::Snake_l(int i)//返回蛇的坐标
{
	return this->Snake_length[i];
}
int Snake::Snake_s()//返回蛇的长度
{
	return this->Snake_size++;
}
int Snake::Snake_d()//返回蛇的方向
{
	return this->Snake_dir;
}

void Snake::Draw_Snake()//画蛇
{
	setcolor(BLACK);
	for (int i = Snake_size-1; i > 0; i--)
	{
		this->Snake_length[i].x = this->Snake_length[i - 1].x;
		this->Snake_length[i].y = this->Snake_length[i - 1].y;
		rectangle(this->Snake_length[i].x, this->Snake_length[i].y,
			this->Snake_length[i].x + 10, this->Snake_length[i].y + 10);
	}
	switch (this->Snake_dir)
	{
	case right:
		Snake_length[0].x += 10;
		break;
	case left:
		Snake_length[0].x -= 10;
		break;
	case up:
		Snake_length[0].y -= 10;
		break;
	case down:
		Snake_length[0].y += 10;
		break;
	}
	rectangle(this->Snake_length[0].x, this->Snake_length[0].y,
		this->Snake_length[0].x + 10, this->Snake_length[0].y + 10);
}
void Snake::Oper_Snake()//操作蛇
{
	char ch=0;//按
	if (_kbhit())//按键存在
	{
		ch = _getch();//获取按键值
		switch (ch)
		{
		case 'W':
		case 'w':
		case 72://上
			if (this->Snake_dir != down)
			{
				this->Snake_dir = up;

			}
			break;
		case 'S':
		case 's':
		case 80://下
			if (Snake_dir != up)
			{
				Snake_dir = down;
			}
			break;
		case 'A':
		case 'a':
		case 75://左
			if (Snake_dir != right)
			{
				Snake_dir = left;
			}
			break;
		case 'D':
		case 'd':
		case 77://右
			if (Snake_dir != left)
			{
				Snake_dir = right;
			}
			break;		
		case 27:
		exit(0);
		break;
		}
	}
}

void Snake::across_wall()//过墙
{
	switch (Snake_dir)
	{
	case right:
		if (Snake_length[0].x > 640)
		{
			Snake_length[0].x -= 640;
		}
		break;
	case left:
		if (Snake_length[0].x <0)
		{
			Snake_length[0].x += 640;
		}
		break;
	case up:
		if (Snake_length[0].y < 0)
		{
			Snake_length[0].y += 470;
		}
		break;
	case down:
		if (Snake_length[0].y > 480)
		{
			Snake_length[0].y -= 480;
		}
		break;
	}
}

2、食物处理

食物头文件

#include"food.h"

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

class Food
{
public:
	Food();
	bool Food_e(bool);//修改食物存在信息
	void Draw_food();//画食物
	coord Food_d();//返回食物坐标
	bool Food_ex();//食物是否存在
	void Creat_food();//创建食物
protected:
	coord Food_dir;//食物的坐标
	bool Food_exist;//食物是否存在
};

.cpp文件

#include"food.h"

Food::Food()
{
//随机食物坐标
	Food_dir.x = rand() % 64 * 10;
	Food_dir.y = rand() % 48 * 10;
	Food_exist = false;
}
bool Food::Food_e(bool a)
{
	Food_exist = a;
	return a;
}
coord Food::Food_d()//返回食物的坐标
{
	return Food_dir;
}
bool Food::Food_ex()
{
	return Food_exist;
}
void Food::Creat_food()//创建食物
{
	Food_dir.x = rand() % 64 * 10;
	Food_dir.y = rand() % 48 * 10;
}
void Food::Draw_food()//画食物
{
	setcolor(RED);//设置颜色
	circle(Food_dir.x, Food_dir.y, 5);
	Food_exist = true;
}

3、主函数界面

#include"main.cpp"

#include"snake.h"
#include"food.h"

void Eat_Food(Food *pFood, Snake *pSnake)
{
	if (pFood->Food_ex())
	{
		if (pSnake->Snake_l(0).x+5 >= pFood->Food_d().x - 8 && pSnake->Snake_l(0).x+5 <= pFood->Food_d().x + 8 &&
			pSnake->Snake_l(0).y+5 >= pFood->Food_d().y - 8 && pSnake->Snake_l(0).y+5 <= pFood->Food_d().y + 8)
		{
			pSnake->Snake_s();
			pFood->Food_e(false);
		}
	}
}
int main()
{
	srand(time(NULL));//随机初始化种子
	initgraph(640, 480);//窗口化大小
	setbkcolor(WHITE);//背景色设置
	Food pFood;
	Snake pSnake;	
	pFood.Draw_food();
	while (1)
	{
		cleardevice();//刷新
		pSnake.Draw_Snake();
		pSnake.Oper_Snake();
		if (!pFood.Food_ex())
		{
			pFood.Creat_food();
		}
			pFood.Draw_food();
			Eat_Food(&pFood, &pSnake);
		pSnake.across_wall();
		Sleep(100);//延时 （ 蛇的速度）
	}

	_getch();
	return 0;
}