diff --git a/snake.cpp b/snake.cpp
new file mode 100644
index 0000000..881c8a2
--- /dev/null
+++ b/snake.cpp
@@ -0,0 +1,302 @@
+#include "Snake.h"
+#include <stdio.h>
+#include <ctime>
+#include <graphics.h>
+#include <mutex>
+Snake::Snake()
+{
+	Point pos0(210, 210);
+	Point pos1(190, 210);
+	Point pos2(170, 210);
+
+	this->m_snakelist.push_back(pos0);
+	this->m_snakelist.push_back(pos1);
+	this->m_snakelist.push_back(pos2);
+
+	this->m_direction = Dir::DIR_RIGHT;
+	this->m_len = 3;
+	this->m_speed = this->OrgSpeed;
+}
+Snake::Snake(int x)
+{
+	Point pos0(210, x);
+	Point pos1(190, x);
+	Point pos2(170, x);
+
+	this->m_snakelist.push_back(pos0);
+	this->m_snakelist.push_back(pos1);
+	this->m_snakelist.push_back(pos2);
+
+	this->m_direction = Dir::DIR_RIGHT;
+	this->m_len = 3;
+	this->m_speed = this->OrgSpeed;
+}
+int Snake::getLen()
+{
+	return this->m_len;
+}
+
+int Snake::getSpeed()
+{
+	return this->m_speed;
+}
+
+Dir Snake::getDirection()
+{
+	return this->m_direction;
+}
+
+bool Snake::setSpeed(int speed)//设置速度
+{
+	if (speed > MaxSpeed)
+	{
+		if (m_speed != MaxSpeed)
+		{
+			m_speed = MaxSpeed;
+			return true;
+		}
+		return false;
+	}
+	else if (speed < MinSpeed)
+	{
+		if (m_speed != MinSpeed)
+		{
+			m_speed =MinSpeed;
+			return true;
+		}
+		return false;
+	}
+	else
+	{
+		m_speed = speed;
+		return true;
+	}
+}
+
+void Snake::Move()
+{
+	this->m_tail = this->m_snakelist.back();
+
+	//移除最后一个节点，复制第一个节点两份
+	this->m_snakelist.pop_back();
+	Point headPos = this->m_snakelist.front();
+	this->m_snakelist.push_front(headPos);
+
+	switch (this->m_direction)
+	{
+	case Dir::DIR_UP:
+		this->m_snakelist.begin()->y -= SNAKE_WIDTH;
+		break;
+
+	case Dir::DIR_RIGHT:
+		this->m_snakelist.begin()->x += SNAKE_WIDTH;
+		break;
+
+	case Dir::DIR_DOWN:
+		this->m_snakelist.begin()->y += SNAKE_WIDTH;
+		break;
+	case Dir::DIR_LEFT:
+		this->m_snakelist.begin()->x -= SNAKE_WIDTH;
+		break;
+	}
+}
+
+void Snake::EatFood()
+{
+	//吃到食物尾部增长
+	this->m_snakelist.push_back(this->m_tail);
+
+	this->m_len += 1;
+}
+
+void Snake::ChangeDir(Dir dir)
+{
+	switch (dir)
+	{
+	case Dir::DIR_UP:
+	case Dir::DIR_DOWN:
+		if (m_direction != Dir::DIR_UP && m_direction != Dir::DIR_DOWN)
+		{
+			m_direction = dir;
+		}
+		break;
+	case Dir::DIR_RIGHT:
+	case Dir::DIR_LEFT:
+		if (m_direction != Dir::DIR_RIGHT && m_direction != Dir::DIR_LEFT)
+		{
+			m_direction = dir;
+		}
+		break;
+	}
+}
+
+void Snake::Dead()
+{
+	//TODO
+	int x = 0;
+	int y = 0;	//x、y表示坐标的该变量
+	int z = 0;	//z表示改变方向
+
+	//使用随机函数
+	srand(time(0));
+
+	std::list<Point>::iterator it = this->m_snakelist.begin();
+	for (; it != this->m_snakelist.end(); ++it)
+	{
+		x = (rand() % 4) * SNAKE_WIDTH;
+		y = (rand() % 4) * SNAKE_WIDTH;
+		z = (rand() % 8);
+
+		switch (z)
+		{
+		case 0:
+			//右
+			(*it).x += x;
+			break;
+		case 1:
+			//下
+			(*it).y += y;
+			break;
+		case 2:
+			//左
+			(*it).x -= x;
+			break;
+
+		case 3:
+			//上
+			(*it).y -= y;
+			break;
+		case 4:
+			//右下
+			(*it).x += x;
+			(*it).y += y;
+			break;
+		case 5:
+			//左下
+			(*it).x -= x;
+			(*it).y += y;
+			break;
+		case 6:
+			//左上
+			(*it).x -= x;
+			(*it).y -= y;
+			break;
+
+		case 7:
+			//右上
+			(*it).x += x;
+			(*it).y -= y;
+			break;
+		}
+	}
+}
+
+bool Snake::ColideWall(int left, int top, int right, int bottom)
+{
+	int x = this->m_snakelist.front().x;
+	int y = this->m_snakelist.front().y;
+	return (x < left || x > right || y < top || y > bottom);
+}
+
+bool Snake::ColideSnake()
+{
+
+	if (m_len <= 3) return false;
+	std::list<Point>::iterator it = this->m_snakelist.begin();
+
+	Point pos = *it;
+	Point next_pos;
+	it++;
+
+	while (it != this->m_snakelist.end())
+	{
+		next_pos = *it;
+
+		if (pos == next_pos)
+		{
+			return true;
+		}
+
+		it++;
+	}
+	return false;
+}
+bool Snake::ColideSnake2(Snake& snake2)
+{
+	// 获取第一条蛇的头部位置
+	Point headPos = this->m_snakelist.front();
+
+	// 遍历第二条蛇的身体，与第一条蛇的头部进行比较
+	std::list<Point>::iterator it = snake2.m_snakelist.begin();
+	while (it != snake2.m_snakelist.end())
+	{
+		if (*it == headPos) {
+			return true;  // 相撞
+		}
+		it++;
+	}
+
+	return false;  // 未相撞
+}
+
+bool Snake::ColideFood(Point point)
+{
+	if (this->m_snakelist.front() == point)
+	{
+		return true;
+	}
+	return false;
+}
+
+void Snake::DrawSnake()
+{
+	std::list<Point>::iterator it = this->m_snakelist.begin();
+	for (; it != this->m_snakelist.end(); ++it)
+	{
+		DrawSnakeNode(*it);
+	}
+	DrawSnakeHead(this->m_snakelist.front());
+}
+void Snake::DrawSnake2()
+{
+	std::list<Point>::iterator it = this->m_snakelist.begin();
+	for (; it != this->m_snakelist.end(); ++it)
+	{
+		DrawSnakeNode2(*it);
+	}
+	DrawSnakeHead2(this->m_snakelist.front());
+}
+void Snake::DrawSnakeHead(Point pos)
+{
+	//紫色，全填充，无边框的正方形
+	setfillcolor(0xAA00AA);
+	setfillstyle(BS_SOLID);
+	solidrectangle(pos.x - SNAKE_RADIU, pos.y + SNAKE_RADIU, pos.x + SNAKE_RADIU, pos.y - SNAKE_RADIU);
+}
+
+void Snake::DrawSnakeNode(Point pos)
+{
+	//绿色，全填充，无边框的正方形
+	setfillcolor(GREEN);
+	setfillstyle(BS_SOLID);
+	solidrectangle(pos.x - SNAKE_RADIU, pos.y + SNAKE_RADIU, pos.x + SNAKE_RADIU, pos.y - SNAKE_RADIU);
+}
+void Snake::DrawSnakeHead2(Point pos)
+{
+	//黄色，全填充，无边框的正方形
+	setfillcolor(YELLOW);
+	setfillstyle(BS_SOLID);
+	solidrectangle(pos.x - SNAKE_RADIU, pos.y + SNAKE_RADIU, pos.x + SNAKE_RADIU, pos.y - SNAKE_RADIU);
+}
+
+void Snake::DrawSnakeNode2(Point pos)
+{
+	//红色，全填充，无边框的正方形
+	setfillcolor(RED);
+	setfillstyle(BS_SOLID);
+	solidrectangle(pos.x - SNAKE_RADIU, pos.y + SNAKE_RADIU, pos.x + SNAKE_RADIU, pos.y - SNAKE_RADIU);
+}
+std::list<Point> Snake::GetSnakeAllNode()
+{
+	return this->m_snakelist;
+}
\ No newline at end of file