制作一个简单的贪吃蛇游戏
1.首先做出一条蛇出来，在随机生成一个果子（可以用button）
2.让蛇动起来（可以做一个定时器 改变按钮的位置）
3.按下相应的按钮让蛇能够相应的动起来 （KeyDown事件）
4.蛇与果子相撞时–（蛇身体增长，果子消失在随机产生一个）
5.结束游戏
具体实现代码
先创建一个蛇的类
class Snake
{
//构造方法
public Snake(int maxLength, Point point)
{
this.maxLength = maxLength;
this.Body = new List();
this.Direction = 1;
//默认一个头，三个身体
Button head = new Button();
head.BackColor = Color.Black;
head.Location = point;
head.Size = new System.Drawing.Size(20, 20);
head.Enabled = false;//键盘事件侦听到这个按钮
Body.Add(head);
for (int i = 0; i < 3; i++)
{
Button body = new Button();
body.BackColor =Color.Gray;
body.Location = new Point(head.Location.X,head.Location.Y+(i+1)*20);
body.Size = new System.Drawing.Size(20, 20);
body.Enabled = false;//键盘事件侦听到这个按钮
Body.Add(body);
}
}
private int maxLength;
//蛇的最大长度
public int MaxLength
{ get => maxLength;
set {
if (value>50)
{
maxLength = 50;
}
else
{
maxLength = value;
}
}
}
public List Body { get; set; }
//方向 1上 2右 3下 4左
public int Direction { get; set; }
public void GrowUp()
{
if (this.Body.Count>this.maxLength)
{
return;
}
Button body = new Button();
body.Size = new Size(20,20);
body.Location = this.Body[0].Location;
body.BackColor = Color.Gray;
body.Enabled = false;
Body.Add(body);
}
}
界面代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsSnake
{
public partial class Form1 : Form
{
//声明分数
int score;
Snake snake;
Button fruit;
Random r = new Random();
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//缓存
this.DoubleBuffered = true;
//初始化蛇的位置
snake = new Snake(50,new Point(100,100));
//初始化水果
InitFruit();
DrawGame();
}
/// <summary>
/// 绘制蛇和水果
/// </summary>
public void DrawGame()
{
this.Controls.Clear();
this.Controls.AddRange(snake.Body.ToArray());
this.Controls.Add(fruit);
}
/// <summary>
/// 初始化水果
/// </summary>
public void InitFruit()
{
int randomX = r.Next(0,this.ClientSize.Width/20)*20;
int randomY = r.Next(0, this.ClientSize.Height / 20) * 20;
//初始化水果
fruit = new Button();
fruit.Size = new Size(20, 20); ;
fruit.Location = new Point(randomX,randomY);//随机位置
fruit.BackColor = Color.Red;
fruit.Enabled = false;
}
private void timer1_Tick(object sender, EventArgs e)
{
//蛇动起来
UpdateGame();
//绘制界面
DrawGame();
//结束游戏
GameEnd();
}
public void UpdateGame()
{
//身体变化
for (int i = snake.Body.Count-1; i > 0; i--)
{
//后面一个身体跟着前面一个身体走
int bodyX = snake.Body[i].Location.X;
int bodyY = snake.Body[i].Location.Y;
bodyX = snake.Body[i - 1].Location.X;
bodyY = snake.Body[i - 1].Location.Y;
snake.Body[i].Location = new Point(bodyX,bodyY);
}
//蛇头变化
int headX = snake.Body[0].Location.X;
int headY = snake.Body[0].Location.Y;
switch (snake.Direction)
{
case 1://上
headY -= 20;
break;
case 2://右
headX += 20;
break;
case 3://下.
headY += 20;
break;
case 4://左
headX -= 20;
break;
}
snake.Body[0].Location = new Point(headX, headY);
//吃水果
if (snake.Body[0].Location == fruit.Location)//蛇头和水果位置一致
{
//累积得分
score += 10;
//果子被吃，在随机出现
int randomX = r.Next(0, this.ClientSize.Width / 20) * 20;
int randomY = r.Next(0, this.ClientSize.Height / 20) * 20;
fruit.Location = new Point(randomX, randomY);
//蛇的身体增加
snake.GrowUp();
}
else
{
if (HitSelf())
{
this.timer1.Stop();
MessageBox.Show("游戏结束,得分：" + score, "系统提示");
}
}
}
/// <summary>
/// 键盘控制
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Form1_KeyDown(object sender, KeyEventArgs e)
{
switch (e.KeyCode)
{
case Keys.Up:
if (snake.Direction!=3)
{
snake.Direction = 1;
}
break;
case Keys.Right:
if (snake.Direction != 4)
{
snake.Direction = 2;
}
break;
case Keys.Down:
if (snake.Direction != 1)
{
snake.Direction = 3;
}
break;
case Keys.Left:
if (snake.Direction != 2)
{
snake.Direction = 4;
}
break;
}
}
public void GameEnd()
{
//蛇撞墙
if (snake.Body[0].Location.X<20||snake.Body[0].Location.X>500|| snake.Body[0].Location.Y < 20 || snake.Body[0].Location.Y > 500)
{
this.timer1.Stop();
MessageBox.Show("游戏结束,得分："+score, "系统提示");
}
}
public bool HitSelf()
{
//获取头部位置
int x = snake.Body[0].Location.X;
int y = snake.Body[0].Location.Y;
for (int i = 3; i < this.snake.Body.Count; i++)
{
if ((x == this.snake.Body[i].Location.X) && (y == this.snake.Body[i].Location.Y))
{
return true;
}
}
return false;
}
}
}