package org.cctv2;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class RaceMap extends JPanel implements Runnable
{
private int x=0,y=0; //bt的位置，也即控制的小方块的位置
private int w=15,h=15; //bt的宽，高
private int direction=0; //方向
private boolean tag=true; //结束标示符
JButton bt; //控制的小方块
Thread th; //线程，获得此线程，方便对象调用此线程
private double speed=1; //速度
private Color color=Color.BLACK; //中间框的颜色
//Icon icon;
RaceMap()
{
//this.setSize(400, 400);
setLayout(null);//要将布局管理器设为空，才能对里面的控件地方做设置
setBackground(Color.WHITE);
bt=new JButton();
//bt.setIcon(icon);
add(bt);
bt.setBackground(Color.RED); //设置背景
//setBounds(100,100,400,400);
bt.setBounds(0, 0, w, h); //设置初始地方
bt.addKeyListener(new KeyAdapter() //添加键盘监听，控制方向
{
public void keyPressed(KeyEvent e)
{
if(e.getKeyCode()==KeyEvent.VK_UP) //上
{
if(direction==0) //本身为向上时，加速
speed+=0.1;
else if(direction==1) //本身为向下时，减速
{
speed-=0.1;
if(speed<=1) //减速到1时，反向向上
direction=0;
}
else //本身为向左或向右时，仅改变方向
direction=0;
}
else if(e.getKeyCode()==KeyEvent.VK_DOWN) //下
direction=1;
else if(e.getKeyCode()==KeyEvent.VK_LEFT) //左
direction=2;
else if(e.getKeyCode()==KeyEvent.VK_RIGHT) //右
direction=3;
}
});
th=new Thread(this);//获得此线程，方便下面对象直接启动此线程
} //要有继承Runnable或Thread才能用此，也即要有自己的线程
public void makeRun()
{
tag=true;
Graphics g=getGraphics();
g.setColor(Color.MAGENTA);//这样画会容易被擦掉
g.fillOval(10, 10, 50, 50);
bt.requestFocusInWindow(); //自动获得焦点，不用按TAB再获得
g.dispose();
}
public void setSpeed(double speed) //设置速度
{
this.speed=speed;
bt.requestFocusInWindow(); //自动获得焦点，不用按TAB再获得
}
public void setFillRectColor(String st) //设置中间矩形的颜色
{
if(st.equals("蓝色"))
color=Color.BLUE;
else if(st.equals("绿色"))
color=Color.GREEN;
else
color=Color.BLACK;
repaint();
bt.requestFocusInWindow(); //自动获得焦点，不用按TAB再获得
}
public void setButtonWidthHeigth(int w,int h)
{
this.w=w;
this.h=h;
bt.setSize(w, h);
bt.requestFocusInWindow(); //自动获得焦点，不用按TAB再获得
}
public void run()
{
bt.requestFocusInWindow(); //自动获得焦点，不用按TAB再获得
while(tag)
{
if(direction==0) //向上 跟的第2句是出边框时的操作
{ //比如出上边框了就到最下面去
y-=speed;
if(y+h<=1) y=this.getHeight();
}
else if(direction==1) //向下
{
y+=speed;
if(y>=this.getHeight()) y=0;
}
else if(direction==2) //向左
{
x-=speed;
if(x+w<=1) x=this.getWidth();
}
else //向右
{
x+=speed;
if(x>=this.getWidth()) x=0;
}
bt.setLocation(x, y);
try
{
Thread.sleep(10); //控制速度
}
catch(InterruptedException e)
{}
if(x+w>130&&x<330&&y+h>130&&y<330) //判断是否与中间矩形相碰
{
tag=false;
repaint();
x=0;
y=0;
}
}
}
public void paint(Graphics g)
{
//g.setColor(Color.WHITE);
//g.fillRect(0, 0, this.getWidth()-1, this.getHeight()-1);
super.paint(g);//如果不写此，加的控件刚开始时不会显现
if(tag==true) g.setColor(color); //画笔
else g.setColor(Color.CYAN);
g.fillRect(130, 130, 200, 200); //填充矩形
//g.fillRect(40, 40, 25, 25);
if(tag==false)
{
g.setColor(Color.RED);
g.drawString("游戏结束",
this.getWidth()/2-30,this.getWidth()/2);
}
}
}
class UpPanel extends Panel
{
TextField tf; //速度
JButton bt1; //提交速度
JButton bt2; //开始
Choice ch; //指示中间框的颜色
Checkbox cb1;
Checkbox cb2;
Checkbox cb3;
CheckboxGroup cbg;
public UpPanel()
{
setLayout(new FlowLayout(FlowLayout.LEFT));
tf=new TextField(10);
bt1=new JButton("提交速度");
bt2=new JButton("点我开始");
ch=new Choice();
ch.add("黑色");
ch.add("绿色");
ch.add("蓝色");
cbg=new CheckboxGroup();
cb1=new Checkbox("小",cbg,false);
cb2=new Checkbox("中",cbg,true);
cb3=new Checkbox("大",cbg,false);
add(tf);
add(bt1);
add(bt2);
add(ch);
add(cb1);
add(cb2);
add(cb3);
//bt1.addActionListener(new myActionPerformed(tf));
}
}
public class CarRace extends JFrame
{
RaceMap rm; //主面板 下面（实际是在Frame中间）
//Button bt; //按钮 “点我开始”
UpPanel upp; //面板2 上面
//Thread th;
public CarRace()
{
super("RaceMapTest");
rm=new RaceMap();
//th=new Thread(rm);
upp=new UpPanel();
upp.bt2.addActionListener(new myActionPerformed(rm));
upp.bt1.addActionListener(new myActionPerformed(upp.tf,rm));
upp.ch.addItemListener(new myItemListener(rm,upp.ch));
upp.cb1.addItemListener(new myItemListener(rm,upp.cb1));
upp.cb2.addItemListener(new myItemListener(rm,upp.cb2));
upp.cb3.addItemListener(new myItemListener(rm,upp.cb3));
//bt=new Button("点我开始");
upp.setBackground(Color.CYAN);
//upp.add(bt);
//bt.addActionListener(this);
setBounds(100, 100, 500, 530);
setLayout(new BorderLayout());
add(upp, BorderLayout.NORTH);
add(rm,BorderLayout.CENTER);
validate();
this.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
dispose();
System.exit(0);
}
});
setVisible(true);
}
public static void main(String []args)
{
new CarRace();
}
}
class myActionPerformed implements ActionListener
{
TextField tf;
RaceMap rm;
myActionPerformed(TextField tf,RaceMap rm) //此必须加上参数RaceMap
{ //要不会抛出异常 NullPointerException
this.tf=tf;
this.rm=rm;
}
myActionPerformed(RaceMap rm)
{
this.rm=rm;
}
public void actionPerformed(ActionEvent e)
{
JButton bt=(JButton)e.getSource();
if(bt.getText().equals("提交速度"))//判断
{
String speed=tf.getText();
if(!(speed.equals("")))
{
try
{
rm.setSpeed(Double.valueOf(speed));
}
catch(NumberFormatException ee)
{
JOptionPane.showMessageDialog(rm,"输入的速度值非数字!");
}
}
else
JOptionPane.showMessageDialog(rm,"没有输入速度值!");
}
else if(bt.getText().equals("点我开始"))//判断
{
try//点击一次按钮后再点会出现IllegalThreadStateException异常
{
rm.th.start();
rm.validate();
}
catch(IllegalThreadStateException ee)
{
rm.makeRun();
}
}
}
}
class myItemListener implements ItemListener
{
RaceMap rm;
Choice ch;
Checkbox cb;
public myItemListener(RaceMap rm,Choice ch)
{
this.rm=rm;
this.ch=ch;
}
public myItemListener(RaceMap rm,Checkbox cb)
{
this.rm=rm;
this.cb=cb;
}
public void itemStateChanged(ItemEvent e)
{
if(e.getItemSelectable().equals(ch))//判断事件源是否为JComboBox
{
rm.setFillRectColor(e.getItem().toString());
//rm.setFillRectColor(ch.getSelectedItem());//这样也行
}
else if(e.getItemSelectable().equals(cb))//判断事件源是否为
{ //Checkbox
if(e.getItem().toString().equals("小"))
rm.setButtonWidthHeigth(10, 10);
else if(e.getItem().toString().equals("大"))
rm.setButtonWidthHeigth(20, 20);
else if(e.getItem().toString().equals("中"))
rm.setButtonWidthHeigth(15, 15);
}
}
}