OpenCV-贪吃蛇

博主晚上闲来无事，用opencv写了一个贪吃蛇程序，以前是用dos界面写的，不太好理解，所以这次把opencv代码贴出来，供大家娱乐，哈哈。

一、测试软硬件

测试硬件：PC-Windows

测试软件：VS2013

二、测试可执行程序

可执行程序下载地址：https://download.csdn.net/download/samylee/10802993

三、操作说明

界面1：选择困难度：1（简单）、2（适中）、3（困难）

界面2：操作说明：A（向左）、W（向上）、D（向右）、S（向下）

四、代码

头文件：snake.h

#ifndef SNAKE_H
#define SNAKE_H

#include 
#include 
#include 

#include 
#include 
#include 
#include 

using namespace std;
using namespace cv;

class Snake
{
public:
	Snake();
	void Snake_Start();

private:
	vector snake_info;
	int snake_direction;

	Mat snake_bg;
	Mat snake_fg;
	Rect snake_fg_rect;
	Mat snake_square;
	Rect snake_start;
	Point snake_max;
	Rect eat_foot;
	bool eat_;
	int difficult;

	Rect Set_Random_Point();
	int Snake_Move(Rect &random_snake);
};

#endif // !SNAKE_H

源文件：snake.cpp

#include "snake.h"

Snake::Snake()
{
	snake_bg = Mat::zeros(Size(640, 480), CV_8UC3);
	putText(snake_bg, "Score: 0", Point(150, 30), 0, 0.8, Scalar(0, 255, 0), 2);
	putText(snake_bg, "Operation: A(left) W(up) D(right) S(down)", Point(60, 460), 0, 0.8, Scalar(0, 255, 0), 2);

	snake_fg = Mat(Size(520, 380), CV_8UC3, Scalar(255,255,255));
	snake_fg_rect.x = 60;
	snake_fg_rect.y = 50;
	snake_fg_rect.width = 520;
	snake_fg_rect.height = 380;

	snake_square = Mat(Size(10, 10), CV_8UC3, Scalar(255, 0, 0));
	Mat middle_color(Size(8, 8), CV_8UC3, Scalar(0, 0, 255));
	middle_color.copyTo(snake_square(Rect(1, 1, 8, 8)));
	eat_ = false;

	snake_direction = 100;

	snake_max.x = snake_fg.cols - snake_square.cols;
	snake_max.y = snake_fg.rows - snake_square.rows;

	snake_start.x = 100;
	snake_start.y = 100;
	snake_start.width = snake_square.cols;
	snake_start.height = snake_square.rows;
	snake_info.push_back(snake_start);

	snake_start.x = 90;
	snake_start.y = 100;
	snake_start.width = snake_square.cols;
	snake_start.height = snake_square.rows;
	snake_info.push_back(snake_start);

	difficult = 200;//easy
}

Rect Snake::Set_Random_Point()
{
	Rect snake_point;

	srand(time(0));
	snake_point.x = rand() % (snake_max.x / snake_square.cols);
	snake_point.y = rand() % (snake_max.y / snake_square.rows);

	snake_point.x *= snake_square.cols;
	snake_point.y *= snake_square.rows;

	snake_point.width = snake_square.cols;
	snake_point.height = snake_square.rows;

	return snake_point;
}

int Snake::Snake_Move(Rect &random_snake)
{
	while (true)
	{
		Rect insert_snake;
		switch (snake_direction)
		{
		case 97:
			snake_info.pop_back();
			insert_snake = snake_info[0];
			insert_snake.x = snake_info[0].x - snake_square.cols;
			snake_info.insert(snake_info.begin(), insert_snake);
			break;
		case 119:
			snake_info.pop_back();
			insert_snake = snake_info[0];
			insert_snake.y = snake_info[0].y - snake_square.rows;
			snake_info.insert(snake_info.begin(), insert_snake);
			break;
		case 100:
			snake_info.pop_back();
			insert_snake = snake_info[0];
			insert_snake.x = snake_info[0].x + snake_square.cols;
			snake_info.insert(snake_info.begin(), insert_snake);
			break;
		case 115:
			snake_info.pop_back();
			insert_snake = snake_info[0];
			insert_snake.y = snake_info[0].y + snake_square.rows;
			snake_info.insert(snake_info.begin(), insert_snake);
			break;
		default:
			break;
		}
		if (eat_)
		{
			snake_info.push_back(eat_foot);
			eat_ = false;
			return 1;
		}
			
		if (snake_info[0].x < 0 || snake_info[0].y < 0 || snake_info[0].x > snake_max.x || snake_info[0].y > snake_max.y)
			return -1;

		for (int i = 3; i < snake_info.size(); i++)
		{
			if (snake_info[0] == snake_info[i])
				return -2;
		}

		if (snake_info[0] == random_snake)
		{
			eat_foot = snake_info[snake_info.size() - 1];
			eat_ = true;
		}

		Mat snake_fg_move = snake_fg.clone();
		for (int i = 0; i < snake_info.size(); i++)
		{
			snake_square.copyTo(snake_fg_move(snake_info[i]));
			snake_fg_move.copyTo(snake_bg(snake_fg_rect));
		}

		imshow("SNAKE", snake_bg);
		char wait = waitKey(difficult);
		switch (wait)
		{
		case 97:
			if (snake_direction != 100)
				snake_direction = wait;
			break;
		case 119:
			if (snake_direction != 115)
				snake_direction = wait;
			break;
		case 100:
			if (snake_direction != 97)
				snake_direction = wait;
			break;
		case 115:
			if (snake_direction != 119)
				snake_direction = wait;
			break;
		default:
			break;
		}
	}
}

void Snake::Snake_Start()
{
	Mat difficult_choice = Mat::zeros(Size(640, 480), CV_8UC3);
	putText(difficult_choice, "SNAKE", Point(170, 170), 4, 3, Scalar(0, 255, 255), 2);
	putText(difficult_choice, "Choice difficulty", Point(230, 220), 0, 0.8, Scalar(0, 255, 0), 2);
	putText(difficult_choice, "1: easy", Point(230, 270), 0, 0.8, Scalar(0, 255, 0), 2);
	putText(difficult_choice, "2: moderation", Point(230, 320), 0, 0.8, Scalar(0, 255, 0), 2);
	putText(difficult_choice, "3: difficulty", Point(230, 370), 0, 0.8, Scalar(0, 255, 0), 2);
	imshow("SNAKE", difficult_choice);
	char wait = waitKey(0);
	if (wait == 49)
		difficult = 200;
	else if (wait == 50)
		difficult = 100;
	else if (wait == 51)
		difficult = 50;
	else
		difficult = 200;

	switch (difficult)
	{
	case 200:
		putText(snake_bg, "Phase: Easy", Point(320, 30), 0, 0.8, Scalar(0, 255, 0), 2);
		break;
	case 100:
		putText(snake_bg, "Phase: moderation", Point(320, 30), 0, 0.8, Scalar(0, 255, 0), 2);
		break;
	case 50:
		putText(snake_bg, "Phase: difficulty", Point(320, 30), 0, 0.8, Scalar(0, 255, 0), 2);
		break;
	default:
		break;
	}

	int score_count = 0;
	while (true)
	{
		Rect random_snake = Set_Random_Point();
		snake_square.copyTo(snake_fg(random_snake));

		int move_check = Snake_Move(random_snake);
		if (move_check == -1 || move_check == -2)
			break;
		else if (move_check == 1)
		{
			putText(snake_bg, "Score: " + to_string(score_count), Point(150, 30), 0, 0.8, Scalar(0, 0, 0), 2);
			score_count++;
			putText(snake_bg, "Score: " + to_string(score_count), Point(150, 30), 0, 0.8, Scalar(0, 255, 0), 2);
		}

		Mat snake_square_merge = Mat(Size(10, 10), CV_8UC3, Scalar(255, 255, 255));
		snake_square_merge.copyTo(snake_fg(random_snake));
	}
	putText(snake_bg, "GAME OVER!", Point(240, 240), 0, 1, Scalar(0, 0, 255), 4);
	imshow("SNAKE", snake_bg);
	waitKey(0);
}

主函数：main.cpp

#include "snake.h"

int main()
{
	Snake snake_get;
	snake_get.Snake_Start();

	return 0;
}

 

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