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分享用程序模拟小球的下落
在控件顶部画出三个小球，用定时器刷新，显示小球逐渐垂直下落，当小球落到底部时，再将小球的Y坐标置0，希望显示小球不断从顶部落下。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
namespace WindowsFormsApp1
{
public class Ball
{
public int x;//坐标
public int y;
public int r;//半径
public int direction = 0; //方向，0表示停止，1表示向上走，2下，3左，4右
public System.Timers.Timer timer;//球的timer
//构造函数
public Ball(int x, int y, int r)
{
this.x = x;
this.y = y;
this.r = r;
timer = new System.Timers.Timer();
timer.Interval = 30;
timer.AutoReset = true;
}
public Ball() { }
//将自己画到gr上
public void Show(Graphics gr)
{
Rectangle rt = new Rectangle(x - r, y - r, 2 * r, 2 * r);
gr.FillEllipse(Brushes.Red, rt);
}
}
}
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 WindowsFormsApp1
{
public partial class Form1 : Form
{
public Ball myBall1, myBall2, myBall3; //自己
public Graphics gr1,gr2,gr3; //PicShow的Graphics对象
private void Form1_Load(object sender, EventArgs e)
{
myBall1 = new Ball(100, 0, 10);
gr1 = pictureBox1.CreateGraphics();
myBall2 = new Ball(200, 0, 10);
gr2 = pictureBox1.CreateGraphics();
myBall3 = new Ball(300, 0, 10);
gr3 = pictureBox1.CreateGraphics();
}
private void timer1_Tick(object sender, EventArgs e)
{
GameShow();
}
public void GameShow() //游戏画面画出
{
//###位图缓冲，防止画面闪烁
//创建位图
Bitmap bmp = new Bitmap(600, 600);
//位图的Graphics对象
Graphics gr1 = Graphics.FromImage(bmp);
//将位图清黑
gr1.Clear(Color.Black);
//...[...在位图上画出要画的东西
if (myBall1 != null)//自己控制的球
{
myBall1.Show(gr1);
}
else
{
myBall1 = new Ball(100, 0, 10);
gr1 = pictureBox1.CreateGraphics();
myBall1.timer.Elapsed += new System.Timers.ElapsedEventHandler(TickMyTank);
myBall1.timer.Start(); //myBall 开始受控制，wasd控制方向
timer1.Start();//游戏时钟
ball1Show();
}
if (myBall2 != null)//自己控制的球
{
myBall2.Show(gr1);
}
else
{
myBall2 = new Ball(200, 0, 10);
gr1 = pictureBox1.CreateGraphics();
myBall2.timer.Elapsed += new System.Timers.ElapsedEventHandler(TickMyTank);
myBall2.timer.Start(); //myBall 开始受控制，wasd控制方向
timer2.Start();//游戏时钟
myBall2.Show(gr1);
}
if (myBall3 != null)//自己控制的球
{
myBall3.Show(gr1);
}
else
{
myBall3 = new Ball(300, 0, 10);
gr1 = pictureBox1.CreateGraphics();
myBall3.timer.Elapsed += new System.Timers.ElapsedEventHandler(TickMyTank);
myBall3.timer.Start(); //myBall 开始受控制，wasd控制方向
timer3.Start();//游戏时钟
myBall3.Show(gr1);
}
//...]
//将位图画到窗体的PictureBox控件
Graphics gr2 = pictureBox1.CreateGraphics();
gr2.DrawImage(bmp, 0, 0);
//释放内存！！这一步必须要，不然内存会爆炸的
bmp.Dispose();
bmp = null;
gr1.Dispose();
gr1 = null;
gr2.Dispose();
gr2 = null;
//刷新积分
try
{
// SetScore(score.ToString());
}
catch (Exception ex)
{
// Console.WriteLine(ex);
}
}
private void timer2_Tick(object sender, EventArgs e)
{
GameShow();
}
private void timer3_Tick(object sender, EventArgs e)
{
GameShow();
}
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
ball1Show();
myBall1.timer.Elapsed += new System.Timers.ElapsedEventHandler(TickMyTank);
myBall1.timer.Start(); //myBall 开始受控制，wasd控制方向
timer1.Start();//游戏时钟
myBall2.timer.Elapsed += new System.Timers.ElapsedEventHandler(TickMyTank);
myBall2.timer.Start(); //myBall 开始受控制，wasd控制方向
timer2.Start();//游戏时
myBall3.timer.Elapsed += new System.Timers.ElapsedEventHandler(TickMyTank);
myBall3.timer.Start(); //myBall 开始受控制，wasd控制方向
timer3.Start();//游戏时
}
public static void Delay1(int milliSecond)
{
int start = Environment.TickCount;
while (Math.Abs(Environment.TickCount - start) < milliSecond)
{
Application.DoEvents();
}
}
private void TickMyTank(object sender, EventArgs e)//自己的myBall的时钟事件
{
myBall1.y += 5;
myBall2.y += 5;
myBall3.y += 5;
if (myBall1.y >= pictureBox1.Height)
{
myBall1.y = 0;
Delay1(2000);
}
if (myBall2.y >= pictureBox1.Height)
{
myBall2.y = 0;
Delay1(2000);
}
if (myBall3.y >= pictureBox1.Height)
{
myBall3.y = 0;
Delay1(2000);
}
}
public void ball1Show() //游戏画面画出
{
//###位图缓冲，防止画面闪烁
//创建位图
Bitmap bmp = new Bitmap(600, 600);
//位图的Graphics对象
Graphics gr1 = Graphics.FromImage(bmp);
//将位图清黑
gr1.Clear(Color.Black);
//...[...在位图上画出要画的东西
if (myBall1 != null)//自己控制的球
{
myBall1.Show(gr1);
}
else
{
myBall1 = new Ball(100, 0, 10);
gr1 = pictureBox1.CreateGraphics();
myBall1.timer.Elapsed += new System.Timers.ElapsedEventHandler(TickMyTank);
myBall1.timer.Start(); //myBall 开始受控制，wasd控制方向
timer1.Start();//游戏时钟
ball1Show();
}
if (myBall2 != null)//自己控制的球
{
myBall2.Show(gr1);
}
else
{
myBall2 = new Ball(200, 0, 10);
gr1 = pictureBox1.CreateGraphics();
myBall2.timer.Elapsed += new System.Timers.ElapsedEventHandler(TickMyTank);
myBall2.timer.Start(); //myBall 开始受控制，wasd控制方向
timer2.Start();//游戏时钟
myBall2.Show(gr1);
}
if (myBall3 != null)//自己控制的球
{
myBall3.Show(gr1);
}
else
{
myBall3 = new Ball(300, 0, 10);
gr1 = pictureBox1.CreateGraphics();
myBall3.timer.Elapsed += new System.Timers.ElapsedEventHandler(TickMyTank);
myBall3.timer.Start(); //myBall 开始受控制，wasd控制方向
timer3.Start();//游戏时钟
myBall3.Show(gr1);
}
//...]
//将位图画到窗体的PictureBox控件
Graphics gr2 = pictureBox1.CreateGraphics();
gr2.DrawImage(bmp, 0, 0);
//释放内存！！这一步必须要，不然内存会爆炸的
bmp.Dispose();
bmp = null;
gr1.Dispose();
gr1 = null;
gr2.Dispose();
gr2 = null;
//刷新积分
try
{
}
catch (Exception ex)
{
}
}
}
}
...全文
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shijies 2024-12-04
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点击button1后，在控件的顶部出现三个小球，三个小球缓慢落下后，在延迟2秒后控件的顶部再次出现，但是小球并不是出现在顶部，而是顶部偏下，且三个小球出现的高度（Y坐标）并不一致。
