C#编程-[“贪吃蛇”小游戏].docx

C#编程 [“贪吃蛇”小游戏]
一、项目内容及要求
编程实现一个“贪吃蛇”小游戏，具体要求如下：
1）程序启动后，蛇身默认向右移动，直到用户按下方向键改变运动方向。
2）玩家通过键盘上的上、下、左、右四个方向键控制蛇在地图上寻找豆，蛇吃下豆后，蛇身加长一节。
3）界面上任意时刻同时会有三个豆，豆的位置随机生成，定时刷新。
4）在游戏过程中，若蛇头碰到场地边界或自己的身体，则游戏失败。

二、算法分析
一、控件设计
1）主菜单控件 MenuStrip
2）面板控件 Panel：背景色为黄色
3）标签控件 Label1、Label2
二、类设计
1）Game类，入口主窗体、游戏界面类。Game类的主要功能包括控制游戏的开始与暂停、选择游戏关卡、声明并创建蛇的行为及豆的行为线程，启动线程。
2）Block类：代表蛇和豆一个节点的块类，游戏中需要绘制的块分为以下三种情况：（1）蛇头：红色椭圆（2）蛇身：红色矩形 （3）豆：绿色椭圆
添加类的属性：块的颜色、是否蛇头、是否豆，横坐标X、纵坐标Y
添加类的行为：绘制块draw（）方法，构造函数（判断是否豆），重载构造函数
3）Snake类：定义游戏中的蛇。其属性包括蛇移动的方向以及蛇身的集合（泛型集合List<>）；其行为成员包括蛇吃豆、吃过豆之后蛇身增长、蛇身移动以及判断蛇是否死亡等。
4）Beans类：定义游戏中的豆。其属性包括3个豆组成的列表（List<>）；其行为成员包括定时刷新豆的集合以及移除某个豆。

三、界面及运行过程

四、关键代码
（代码要求注释完整，例如：变量的作用，语句的作用，方法的功能等都要加注释说明）
namespace 项目5
{
public partial class Form1 : Form
{
Food food = new Food();
Snake snake = new Snake();
private int score;
public Form1()
{
InitializeComponent();
timer1.Enabled = false;//timer是否可用
timer1.Interval = snake.Speed; //蛇初始速度
score = 0;

}
Point[] body = new Point[1000]; //蛇最大长度
private void 操作ToolStripMenuItem_Click(object sender, EventArgs e)
{

}
protected override bool ProcessDialogKey(Keys keyData)
{
switch (keyData)
{
case Keys.Up:
if (snake.Direction != Direction.down)
{
snake.Direction = Direction.up;
}
break;
case Keys.Down:
if (snake.Direction != Direction.up)
{
snake.Direction = Direction.down;
}
break;
case Keys.Left:
if (snake.Direction != Direction.right)
{
snake.Direction = Direction.left;
}
break;
case Keys.Right:
if (snake.Direction != Direction.left)
{
snake.Direction = Direction.right;
}
break;
}
return base.ProcessDialogKey(keyData);

}
private void menuStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{

}

private void 开始游戏ToolStripMenuItem_Click(object sender, EventArgs e)
{
label2.Text = "0";
score = 0;
timer1.Enabled = true;
if (snake.Live == false)
{
snake = new Snake();
snake.resetSnake();
label2.Text = "0";
score = 0;
timer1.Enabled = true;
}

}

private void 关卡设定ToolStripMenuItem_Click(object sender, EventArgs e)
{

}

private void 暂停游戏ToolStripMenuItem_Click(object sender, EventArgs e)
{
if (暂停游戏ToolStripMenuItem.Text == "暂停游戏")
{
timer1.Enabled = false;
暂停游戏ToolStripMenuItem.Text = "继续";
}
else
{
timer1.Enabled = true;
暂停游戏ToolStripMenuItem.Text = "暂停游戏";
}
}

private void 退出游戏ToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Close();
}

private void 第一关ToolStripMenuItem_Click(object sender, EventArgs e)
{
timer1.Interval = 200;
}

private void 第二关ToolStripMenuItem_Click(object sender, EventArgs e)
{
timer1.Interval = 150;
}

private void 第三关ToolStripMenuItem_Click(object sender, EventArgs e)
{
timer1.Interval = 100;
}

private void 第四关ToolStripMenuItem_Click(object sender, EventArgs e)
{
timer1.Interval = 50;
}

private void 第五关ToolStripMenuItem_Click(object sender, EventArgs e)
{
timer1.Interval = 30;
}

private void timer1_Tick(object sender, EventArgs e)
{
snake.Move();
panel1.Invalidate();//蛇运动后，把picturebox1当前界面设为无效，并引发paint事件，重新绘制界面

}

private void panel1_Paint(object sender, PaintEventArgs e)
{
Graphics g = e.Graphics;
snake.Draw(g);//画蛇
if (snake.live == false)
{
timer1.Enabled = false;//timer1不可用
}
if (snake.Body[0].X == food.Position.X && snake.Body[0].Y == food.Position.Y)
{
snake.Eat(food);
food.Exist = false;
score += 10;
label2.Text = score.ToString();
}
if (food.Exist)
{
food.Draw(g);
}
else
{
food.Position = food.createdFood();//重新创造绘制食物
food.Exist = true;
food.Draw(g);
}
}
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.ComponentModel;
using System.Data;
using System.Drawing;

using System.Windows.Forms;
using System.Media;
using System.IO;
namespace 项目5
{

class Block
{

}

public enum Direction
{
up, down, left, right,
}
class Snake
{
public int score;
public const int side = 10;//蛇身每个节点长度
Point[] body = new Point[600];//蛇身最大长度
Direction direction;//蛇初始移动方向
public bool live;//蛇存活状态
int number;//蛇身节点个数
int speed = 120;//蛇的初始速度
public int Speed//Speed属性
{
get
{
return speed;
}
set
{
speed = value;
}
}
public Direction Direction//Direction的属性
{
get
{
return direction;
}
set
{
direction = value;
}
}
public bool Live//Live的属性
{
get
{
return live;
}
set
{
live = value;
}
}
public Point[] Body//Body属性
{
get
{
return body;
}
}
public Snake()//蛇类的构造器初始值
{
Point node1 = new Point(100, 50);
Point node2 = new Point(90, 50);
body[0] = node1;
body[1] = node2;
number = 2;
direction = Direction.right;
live = true;
}
public void Move()//蛇的移动
{
for (int i = this.number - 1; i > 0; i--)//蛇移动的方式
{
body[i] = body[i - 1];
}
switch (this.direction)//蛇移动的方向
{
case Direction.up:
body[0].Y -= side;
break;
case Direction.down:
body[0].Y += side;
break;
case Direction.left:
body[0].X -= side;
break;
case Direction.right:
body[0].X += side;
break;
}
if (body[0].X < 10 || body[0].X > 537 || body[0].Y < 10 || body[0].Y > 346)//蛇撞四壁挂
{
this.live = false;
}
for (int i = 1; i <= number - 1; i++)
{
if (body[0].X == body[i].X && body[0].Y == body[i].Y)
{
this.live = false;
}
}
}

public void Eat(Food food)//蛇吃食物
{
Label label2 = new Label();
body[number] = food.Position;
this.number++;//长度加
score += 2;
label2.Text = Convert.ToString(score);
}
public void Draw(Graphics g)//绘制蛇
{
SolidBrush RedBrush = new SolidBrush(Color.Red);
g.DrawEllipse(Pens.Red, body[0].X, body[0].Y, side, side);
g.FillEllipse(RedBrush, body[0].X, body[0].Y, side, side);
for (int i = 1; i <= number - 1; i++)
{
g.DrawRectangle(Pens.Red, body[i].X, body[i].Y, side, side);
g.FillRectangle(RedBrush, body[i].X, body[i].Y, side, side);
}
if (this.live == false)
{
g.DrawString("Game Over!", new Font("宋体", 36, FontStyle.Bold), RedBrush, new Point(100, 150));
}
}
public void resetSnake()//重新设置蛇
{
Point node1 = new Point(100, 320);
Point node2 = new Point(90, 320);
body[1] = node1;
body[0] = node2;
number = 2;
direction = Direction.right;
live = true;
}
}

class Food
{
Point position;//食物位置
Boolean exist;//判断失误是否存在
public Food()
{
position = this.createdFood();
exist = true;
}
public Point Position//Position的属性
{
get
{
return position;
}
set
{
position = value;
}
}
public Boolean Exist//Exist属性
{
get
{
return exist;
}
set
{
exist = value;
}
}
public Point createdFood()//随机产生食物
{
Point position = new Point();
Random ran = new Random();
position.X = ran.Next(1, 30) * 10;
position.Y = ran.Next(1, 30) * 10;
return position;
}
public void Draw(Graphics g)//绘制食物
{
SolidBrush greenBrush = new SolidBrush(Color.Green);

g.FillEllipse(greenBrush, position.X, position.Y, 10, 10);

}

}
}