贪吃蛇小游戏完善中。。。 - C# 论坛

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using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace snake
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
enum Direction {east,west,north,south};
public class Form1 : System.Windows.Forms.Form
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
Keys direction;//蛇行进的方向
Size s;
ArrayList snake;
Brush b_p;
Brush b_s;
Brush b_sh;
Brush b_b;
Point bean;//豆子
int speed;
int acc_speed
{
get
{
return speed;
}
set
{
if(value>=0&&value<9)
speed=value;
}
}
Direction dr;
private System.Windows.Forms.Timer timer1;
private System.ComponentModel.IContainer components;

public Form1()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
s=new Size(29,29);
Initialize_snake();
b_p=new SolidBrush(Color.Gold);
b_s=new SolidBrush(Color.BlueViolet);
b_sh=new SolidBrush(Color.Red);
b_b=new SolidBrush(Color.Silver);
direction =Keys.Right;//初始化方向为向右
bean=new Point();
Generate_bean();
acc_speed=0;
// dr=Direction.east;
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
private void Initialize_snake()
{
snake = new ArrayList();
snake.Add(new Point(0, 0));
// snake.Add(new Point(0, 30));
// snake.Add(new Point(0, 60));
// snake.Add(new Point(0, 90));
// snake.Add(new Point(0, 120));
}
private void Generate_bean()
{
Random r=new Random();
do
{
int x=r.Next(10);//随机生成大于等于0小于10的整数
int y=r.Next(10);
bean.X=x*30;
bean.Y=y*30;
}while(point_in_snake(bean));//判断豆子在不在蛇上
}
private bool point_in_snake(Point p)//p——豆子的点坐标
{
for(int i=0;i<snake.Count;i++)
{
if(p.Equals(snake[i]))
return true;
}
return false;
}
private void draw_bean(Graphics g)
{
draw_rec(bean,g,b_b);
}

/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.timer1 = new System.Windows.Forms.Timer(this.components);
//
// timer1
//
this.timer1.Enabled = true;
this.timer1.Interval = 1000;
this.timer1.Tick += new System.EventHandler(this.timer1_Tick);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.BackColor = System.Drawing.SystemColors.WindowText;
this.ClientSize = new System.Drawing.Size(296, 300);
this.MaximizeBox = false;
this.MaximumSize = new System.Drawing.Size(304, 330);
this.Name = "Form1";
this.Text = "Form1";
this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.Form1_KeyDown);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);

}
#endregion

/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}

private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
draw_panel(e.Graphics);
draw_snake(e.Graphics);
draw_bean(e.Graphics);
}
private bool point_valid(Point p)
{
if(p.X<0||p.X>=300||p.Y<0||p.Y>=300||point_in_snake(p))
return false;
else
return true;
}

private void Form1_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
if(e.KeyCode==Keys.Right||e.KeyCode==Keys.Left||
e.KeyCode==Keys.Up||e.KeyCode==Keys.Down)
{
draw(e.KeyCode);
direction=e.KeyCode;
}
}
private void draw(Keys direct)
{
Graphics g_key=this.CreateGraphics();
draw_panel(g_key);
find_snake_d(direct);
if(valid_sanke())//如果蛇的新位置合法，判断蛇是否吃到豆
{
if(point_in_snake(bean))//吃到豆子
{
snake_add();//使蛇长长
draw_snake(g_key);//画长长的新蛇
Generate_bean();//重新生成豆子
draw_bean(g_key);//画豆子
}
else//没吃到豆子
{
draw_snake(g_key);//画蛇
g_key.FillRectangle(new SolidBrush(Color.Silver),
bean.X,bean.Y,
29,29);//画豆子
}
}
else
{
timer1.Enabled=false;
MessageBox.Show("you are lost!");
Initialize_snake();
Generate_bean();
draw_snake(g_key);
draw_bean(g_key);
direction=Keys.Right;
timer1.Enabled=true;
}
g_key.Dispose();
}
private void snake_add()
{
Point p1=(Point)snake[snake.Count-1];
Point p;
if(point_valid(new Point(p1.X-30,p1.Y)))
{
p=new Point(p1.X-30,p1.Y);
snake.Add(p);
return;
}
else if(point_valid(new Point(p1.X+30,p1.Y)))
{
p=new Point(p1.X+30,p1.Y);
snake.Add(p);
return;
}
else if(point_valid(new Point(p1.X,p1.Y-30)))
{
p=new Point(p1.X,p1.Y-30);
snake.Add(p);
return;
}
else if(point_valid(new Point(p1.X,p1.Y+30)))
{
p=new Point(p1.X,p1.Y+30);
snake.Add(p);
return;
}
else
Initialize_snake();
}
private bool valid_sanke()
{
Point p=(Point)snake[0];
if((p.X<0)||(p.X>=300)||(p.Y<0)||(p.Y>=300))
return false;
if(headinsnake())
return false;
else
return true;
}
private bool headinsnake()
{
Point p=(Point)snake[0];
for(int i=1;i<snake.Count;i++)
{
Point pc=(Point)snake[i];
if(p.Equals(pc))
return true;
}
return false;
}
private void find_snake_d(Keys key)
{
int l = snake.Count;
for (int i = l - 1; i > 0; i--)
snake[i] = snake[i - 1];
Point p0 = (Point)snake[0];
switch (key)
{
case Keys.Down: p0.Y += 30; break;
case Keys.Up: p0.Y -= 30; break;
case Keys.Left: p0.X -= 30; break;
case Keys.Right: p0.X += 30; break;
default:break;
}
snake[0] = p0;

}
private void draw_panel(Graphics g)
{
for (int i = 0; i < 10; i++)
for (int j = 0; j < 10; j++)
{
Point p = new Point(i * 30, j * 30);
draw_rec(p, g, b_p);
}
}
private void draw_snake(Graphics g)
{
foreach (Point snake_i in snake)
{
draw_rec(snake_i, g, b_s);
}
Point p=(Point)snake[0];
draw_rec(p,g,b_sh);
}
private void draw_rec(Point p,Graphics g,Brush b)
{
g.FillRectangle(b,new Rectangle(p,s));
}

private void timer1_Tick(object sender, System.EventArgs e)
{
Graphics g_key=this.CreateGraphics();
draw_panel(g_key);
find_snake_d(direction);
if(valid_sanke())//如果蛇的新位置合法，判断蛇是否吃到豆
{
if(point_in_snake(bean))//吃到豆子
{
snake_add();//使蛇长长
draw_snake(g_key);//画长长的新蛇
Generate_bean();//重新生成豆子
draw_bean(g_key);//画豆子
}
else//没吃到豆子
{
draw_snake(g_key);//画蛇
g_key.FillRectangle(new SolidBrush(Color.Silver),
bean.X,bean.Y,
29,29);//画豆子
}
}
else
{
timer1.Enabled=false;
MessageBox.Show("you are lost!");
Initialize_snake();
Generate_bean();
draw_snake(g_key);
draw_bean(g_key);
timer1.Enabled=true;
}
g_key.Dispose();

}

}
}