package 华容道;
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import java.awt.*;
import java.awt.event.*;
//主函数
public class Main {
public static void main(String[] args) {
new Hua_Rong_Road();
}
}
//人物按钮颜色
class Person extends Button implements FocusListener{
int number;
Color c=new Color(255,245,170);
Person(int number,String s)
{
super(s);
setBackground(c);//人物的颜色背景是黄色
this.number=number;
c=getBackground();
addFocusListener(this);//好像是焦点监听器
}
public void focusGained(FocusEvent e)
{
setBackground(Color.red);//只要单击该按钮则按钮变颜色
}
public void focusLost(FocusEvent e) {
setBackground(c);//上一个按钮回复原先的颜色
}
}
//华容道总类
class Hua_Rong_Road extends Frame implements MouseListener,KeyListener,ActionListener{
Person person[] = new Person[10];
Button left,right,above,below;
Button restart = new Button("Start");//重新开始按钮
public Hua_Rong_Road()
{
init();
setBounds(100,100,320,360);
setVisible(true);//设置Frame为可见，默认为不可见
validate();
addWindowListener(
new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
}
);
}
public void init()
{
setLayout(null);
add(restart);
restart.setBounds(100, 320, 120, 25);
restart.addActionListener(this);
String name[]={"我","陆逊","姜维","陈宫","许攸","邓艾","周瑜","庞统","诸葛亮","贾诩"};
for(int k=0;kname.length;k++)
{
person[k]=new Person(k,name[k]);
person[k].addMouseListener(this);
person[k].addKeyListener(this);
add(person[k]);
}//为所有的按钮注册所需的东西
person[0].setBounds(104, 54, 100, 100);
person[1].setBounds(104,154, 100, 50);
person[2].setBounds(54, 154, 50, 100);
person[3].setBounds(204, 154, 50, 100);
person[4].setBounds(54, 54, 50, 100);
person[5].setBounds(204, 54, 50, 100);
person[6].setBounds(54, 254,50, 50);
person[7].setBounds(204, 254, 50, 50);
person[8].setBounds(104, 204, 50, 50);
person[9].setBounds(154, 204, 50, 50);
//初始化按钮的位子
person[0].requestFocus();
left=new Button();
right=new Button();
above=new Button();
below=new Button();
left.setBounds(49,49,5,260);
right.setBounds(254,49,5,260);
above.setBounds(49,49,210,5);
below.setBounds(49,304,210,5);
validate();
}
public void keyTyped(KeyEvent e){}
public void keyReleased(KeyEvent e){}
public void keyPressed(KeyEvent e)
{
Person man=(Person)e.getSource();
if(e.getKeyCode()==KeyEvent.VK_DOWN)
{
go(man,below);
}
if(e.getKeyCode()==KeyEvent.VK_UP)
{
go(man,above);
}
if(e.getKeyCode()==KeyEvent.VK_LEFT)
{
go(man,left);
}
if(e.getKeyCode()==KeyEvent.VK_RIGHT)
{
go(man,right);
}
}
public void mousePressed(MouseEvent e)
{
Person man =(Person)e.getSource();
int x=-1,y=-1;
x=e.getX();
y=e.getY();
int w=man.getBounds().width;
int h=man.getBounds().height;
if(yh/2)
{
go(man,below);
}
if(yh/2)
{
go(man,above);
}
if(xw/2)
{
go(man,left);
}
if(xw/2)
{
go(man,right);
}
}
public void mouseReleased(MouseEvent e){}
public void mouseEntered(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void mouseClicked(MouseEvent e){}
public void go(Person man,Button direction)
{
boolean move=true;
Rectangle manRect=man.getBounds();
int x=man.getBounds().x;
int y=man.getBounds().y;
if(direction==below)
y=y+50;
else if(direction==above)
y=y-50;
else if(direction==left)
x=x-50;
else if(direction==right)
x=x+50;
manRect.setLocation(x,y);
Rectangle directionRect=direction.getBounds();
for(int k=0;k10;k++)
{
Rectangle personRect=person[k].getBounds();
if((manRect.intersects(personRect))(man.number!=k))
{
move=false;
}
}
if(manRect.intersects(directionRect))
{
move=false;
}
if(move==true)
{
man.setLocation(x,y);
}
}
public void actionPerformed(ActionEvent e)
{
dispose();
new Hua_Rong_Road();
}
}
一楼的说的够全面了,不过稍有误解.
再来表示抱歉,我对编程语言中的中文名词非常不了解,所以如果以下的回复对你的阅读或者理解造成困难,请见谅.
1.首先,要明白这个问题的答案,需要了解call (pass) by value 和 call (pass) by reference 的区别.简单来说:
call by value通常是复制这个parameter的值去另外一块内存里,然后传给function, 所以在method/function里边对这个变量的所有变更,实际上都是对复制过来的镜像进行操作,不会对原本的variable有任何影响.
call by reference是将parameter的reference传给function,简单点理解就是直接把variable传给function.所以说这个variable的值是可以被function改变的.这个用法在c/c++中非常常见,用法是variable_name.
2.再来,在Java里边,你可以很简单的理解为: Java中只有call by value, 也就是说,所以所有传给function的parameter本身都不会被改变. (这是最简单直白的理解,当然也有另一种常从sun的人那边听到的说法:Java是call by value + call by reference by value)
3.那么现在的问题就是为什么第二个结果是2了. 首先说一下sun官方的解释: 对于reference type在作为parameter/argument的时候,也是call by value, 但是在你拥有足够权限时(比方说那个变量是public的, 不是final的等等各种符合的情况),可以修改这个object中fields的值(也就是属于这个object(严谨点讲是an instance of the object) 内部的变量, 在你的例子中, ko 里边的 a 就是一个field, 所以update(ko)会使ko.a变成2).
4.如果你是一个有过c/c++学习经验的人或者你以上的解释很难理解,以下这种说法或许更适合你 (当然了,这只是大多包括我在内有c经验的人的一种理解方式)
这里可以引入一个新的概念,pointer. 这是一种比较特殊的变量,它内部所储存的东西,其实只是另外一个变量的内存地址. 如果对内存没有概念,你可以把它简单理解为是风筝的线轴,虽然看它本身看不出什么端倪,但是顺着摸过去总会找到风筝,看到它是什么样子. 以pointer方式理解Java的人,通常会说: Type variable = new Type(); 这个过程中,最后生成的这个variable其实就是一个pointer,而不是instance本身.
在Java中, 有c/c++经验的人通常认为Java是call by value.同时,当一个变量用在储存reference type的时候,实际上储存的是它的pointer,这也一样可以解释为什么ko.a会有2这个结果,因为虽然pointer被传到function里边时,本身是call by value,无法被改变.但这并不影响function本身对这个pointer指向的object的内容做任何改变. 当然,再次声明,这只是一种帮助有c/c++经验的人理解的方法. Sun本身严正声明Java里边没有pointer这个东西的存在.
5. 再来解释一下为什么说楼上所说的(或者说楼上引用的)理解略有偏差.
引用"我们上面刚学习了JAVA的数据类型，则有：值类型就是按值传递的，而引用类型是按引用传递的" 这句话很明显的有两点错误. 第一点,如果我上面所说的,Java是没有call by reference的.
第二点,暂且假设Java里边是有call by reference的, 这句话依然不成立.
Java中的变量有两种类型: primitive types 和 reference type.
primitive type包括byte, short, int, long, char, boolean, float和double.
而这8种之外的所有的,都是reference type.
下面是一段对你的贴上来的code的一点延伸,希望可以帮助你更好的理解Java中的argument / parameter到底是如何运作的.
public class Test {
public static void main(String[] args) {
int a = 1;
Koo koo = new Koo();
Object o = new Integer(1);
Koo newKoo = new Koo();
update(a);
update(koo);
update(o);
update(newKoo);
newUpdate(newKoo);
System.out.println(a);
System.out.println(koo.a);
System.out.println(o);
System.out.println(newKoo.a);
}
static void update(int a) {
a++;
}
static void update(Koo koo) {
koo.a++;
}
static void update(Object o) {
o = (int) (Integer.parseInt(o.toString()) + 1);
}
static void newUpdate(Koo koo) {
koo = new Koo();
}
}
class Koo {
int a = 1;
}
/*
o = (int) (Integer.parseInt(o.toString()) + 1); 这一行中的(int)纯粹是多余的,是否有这个casting对code本身没有任何影响. 如果你高兴也可以用
o = new Integer(Integer.parseInt(o.toString()) + 1);
或者干脆
o = Integer.parseInt(o.toString()) + 1;
*/
以上这些code运行之后会得到1 2 1 2的结果. 后面两个结果可以很好的说明, 即使对objects (reference type variables) 来看, Java所应用的也并不是call by reference. 否则的话,以上code运行结果应该是1 2 2 1
希望你可以真正理解这个新的例子中,产生1212这个结果的原因,从而对Java中的arguments有一个系统全面的认识.
图片是相关资料的链接,知道里貌似不能加网址
import java.awt.*;
import java.awt.event.*;
public class MoveExample //主类
{
public static void main(String args[]) //定义主方法
{
new Hua_Rong_Road(); //创建对象
}
}
class Person extends Button implements FocusListener
{
int number;
Color c = new Color(128,128,128);
Person(int number,String s)//构造方法
{
super(s);//调用父类s的构造方法
setBackground(c);//设置组件的背景色
this.number = number;//调用当前的number
c = getBackground();
addFocusListener(this);//添加焦点事件监听器
}
public void focusGained(FocusEvent e)//焦点事件触发
{
setBackground(Color.blue);
}
public void focusLost(FocusEvent e)//焦点事件失去
{
setBackground(c);
}
}
class Hua_Rong_Road extends Frame implements MouseListener,KeyListener,ActionListener
{
Person person[] = new Person[10];//person类的数组
Button left,right,above,below;
Button restart = new Button("重新开始");
public Hua_Rong_Road() //华容道的构造方法
{
init(); //初始化
setBounds(100,100,320,360);//设置窗口在屏幕上出现位置，和窗口大小
setVisible(true);//设置窗口可见
setResizable(true);//设置窗口可调节
validate();//刷新
addWindowListener( new WindowAdapter()//获得窗口事件监视器
{
public void windowClosing(WindowEvent e)//窗口正在被关闭时，窗口监视器调用该方法
{
System.exit(0);
}
}
);
}
public void init()
{
setLayout(null);//设置默认布局
add(restart);//添加重新开始
restart.setBounds(100,320,120,25);//重新开始按钮大小
restart.addActionListener(this);//事件源获得监视器
String name[] = {"曹操","关羽","张飞","刘备","赵云","黄忠","兵","兵","兵","兵"};
for(int k = 0;kname.length;k++)
{
person[k] = new Person(k,name[k]);//给按钮添加名字
person[k].addMouseListener(this);//每个按钮都注册鼠标事件
person[k].addKeyListener(this);//每个按钮都注册键盘事件
add(person[k]);//添加人物
}
person[0].setBounds(104,54,100,100);
person[1].setBounds(104,154,100,50);
person[2].setBounds(54,154,50,100);
person[3].setBounds(204,154,50,100);
person[4].setBounds(54,54,50,100);
person[5].setBounds(204,54,50,100);
person[6].setBounds(54,254,50,50);
person[7].setBounds(204,254,50,50);
person[8].setBounds(104,204,50,50);
person[9].setBounds(154,204,50,50);//为每个人物按钮设置位置和大小
person[9].requestFocus();//把焦点先设置在这个按钮上
left = new Button();//画出游戏界面边框，并用定义的left，right，above，below控制大小
right = new Button();
above = new Button();
below = new Button();
add(left);
add(right);
add(above);
add(below);
left.setBounds(49,49,5,260);
right.setBounds(254,49,5,260);
above.setBounds(49,49,210,5);
below.setBounds(49,304,210,5);
validate();//刷新
} //完成界面布局
public void keyTyped(KeyEvent e){}
public void keyReleased(KeyEvent e){}
public void keyPressed(KeyEvent e)//响应键盘事件，按键，释放键，按下和释放组合
{
Person man = (Person)e.getSource();//获得事件源
if(e.getKeyCode()==KeyEvent.VK_DOWN)//响应用户按下方向光标的操作；用KeyEvent类中的getkeycode（）判断哪个键被按下
{
go(man,below); //go方法控制移动
}
if(e.getKeyCode()==KeyEvent.VK_UP)
{
go(man,above);
}
if(e.getKeyCode()==KeyEvent.VK_LEFT)
{
go(man,left);
}
if(e.getKeyCode()==KeyEvent.VK_RIGHT)
{
go(man,right);
}
}
public void mousePressed(MouseEvent e)
{
Person man = (Person)e.getSource();
int x = -1,y = -1;
x = e.getX();
y = e.getY();
int w = man.getBounds().width;
int h = man.getBounds().height;
if(yh/2)
{
go(man,below);
}
if(yh/2)
{
go(man,above);
}
if(xw/2)
{
go(man,left);
}
if(xw/2)
{
go(man,right);
}
}
public void mouseReleased(MouseEvent e){}//鼠标事件
public void mouseEntered(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void mouseClicked(MouseEvent e){}
public void go(Person man,Button direction)
{
boolean move = true;
Rectangle manRect = man.getBounds();
int x = man.getBounds().x;
int y = man.getBounds().y;
if(direction==below)//向各个方向移动
{
y = y+50;
}
else if(direction==above)
{
y = y-50;
}
else if(direction==left)
{
x = x-50;
}
else if(direction==right)
{
x = x+50;
}
manRect.setLocation(x,y);
Rectangle directionRect = direction.getBounds();
for(int k = 0;k10;k++)
{
Rectangle personRect = person[k].getBounds();
if((manRect.intersects(personRect))(man.number!=k))//如果覆盖就不移动
{
move = false;
}
}
if(manRect.intersects(directionRect))
{
move = false;
}
if(move==true)
{
man.setLocation(x,y);
}
}
public void actionPerformed(ActionEvent e)
{
dispose();
new Hua_Rong_Road();
}
}
import java.awt.*;
import java.awt.event.*;
public class MoveExample
{
public static void main(String args[])
{
new Hua_Rong_Road();
}
}
class Person extends Button implements FocusListener
{
int number;
Color c = new Color(255,245,170);
Person(int number,String s)
{
super(s);
setBackground(c);
this.number = number;
c = getBackground();
addFocusListener(this);
}
public void focusGained(FocusEvent e)
{
setBackground(Color.red);
}
public void focusLost(FocusEvent e)
{
setBackground(c);
}
}
class Hua_Rong_Road extends Frame implements MouseListener,KeyListener,ActionListener
{
Person person[] = new Person[10];
Button left,right,above,below;
Button restart = new Button("重新开始");
public Hua_Rong_Road()
{
init();
setBounds(100,100,320,360);
setVisible(true);
validate();
addWindowListener( new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
}
);
}
public void init()
{
setLayout(null);
add(restart);
restart.setBounds(100,320,120,25);
restart.addActionListener(this);
String name[] = {"曹操","关羽","张飞","刘备","赵云","黄忠","兵","兵","兵","兵"};
for(int k = 0;kname.length;k++)
{
person[k] = new Person(k,name[k]);
person[k].addMouseListener(this);
person[k].addKeyListener(this);
add(person[k]);
}
person[0].setBounds(104,54,100,100);
person[1].setBounds(104,154,100,50);
person[2].setBounds(54,154,50,100);
person[3].setBounds(204,154,50,100);
person[4].setBounds(54,54,50,100);
person[5].setBounds(204,54,50,100);
person[6].setBounds(54,254,50,50);
person[7].setBounds(204,254,50,50);
person[8].setBounds(104,204,50,50);
person[9].setBounds(154,204,50,50);
person[9].requestFocus();
left = new Button();
right = new Button();
above = new Button();
below = new Button();
add(left);
add(right);
add(above);
add(below);
left.setBounds(49,49,5,260);
right.setBounds(254,49,5,260);
above.setBounds(49,49,210,5);
below.setBounds(49,304,210,5);
validate();
}
public void keyTyped(KeyEvent e){}
public void keyReleased(KeyEvent e){}
public void keyPressed(KeyEvent e)
{
Person man = (Person)e.getSource();
if(e.getKeyCode()==KeyEvent.VK_DOWN)
{
go(man,below);
}
if(e.getKeyCode()==KeyEvent.VK_UP)
{
go(man,above);
}
if(e.getKeyCode()==KeyEvent.VK_LEFT)
{
go(man,left);
}
if(e.getKeyCode()==KeyEvent.VK_RIGHT)
{
go(man,right);
}
}
public void mousePressed(MouseEvent e)
{
Person man = (Person)e.getSource();
int x = -1,y = -1;
x = e.getX();
y = e.getY();
int w = man.getBounds().width;
int h = man.getBounds().height;
if(yh/2)
{
go(man,below);
}
if(yh/2)
{
go(man,above);
}
if(xw/2)
{
go(man,left);
}
if(xw/2)
{
go(man,right);
}
}
public void mouseReleased(MouseEvent e){}
public void mouseEntered(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void mouseClicked(MouseEvent e){}
public void go(Person man,Button direction)
{
boolean move = true;
Rectangle manRect = man.getBounds(); //什么意思??
int x = man.getBounds().x; //又不懂了
int y = man.getBounds().y;
if(direction==below)
{
y = y+50;
}
else if(direction==above)
{
y = y-50;
}
else if(direction==left)
{
x = x-50;
}
else if(direction==right)
{
x = x+50;
}
manRect.setLocation(x,y);
Rectangle directionRect = direction.getBounds();
for(int k = 0;k10;k++)
{
Rectangle personRect = person[k].getBounds();
if((manRect.intersects(personRect))(man.number!=k))
{
move = false;
}
}
if(manRect.intersects(directionRect))
{
move = false;
}
if(move==true)
{
man.setLocation(x,y);
}
}
public void actionPerformed(ActionEvent e)
{
dispose();
new Hua_Rong_Road();
}
}
这是我们课本上的，颜色不一样，其他的都差不多，不过是用awt组件写的，你应该是要用swing写的吧，照这个改改吧...
这个我试了的没有任务问题，稀望对你有点帮助,记得类名要改为Hua_Rong_Road ，因为只有Hua_Rong_Road 这个类是公开的.另外包名也改下package xxxx(你自己建的包名),玩游戏时移动人物，用键盘（上下左右 ,--,--,上,下）操作,鼠标是不能移动 人物的，照着我说的做，应该是没什么问题的:
package baidu.testfive;
import java.applet.Applet;
import java.awt.Button;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
class People extends Button implements FocusListener // 代表华容道人物的类。
{
Rectangle rect = null;
int left_x, left_y;// 按扭的左上角坐标.
int width, height; // 按扭的宽和高.
String name;
int number;
People(int number, String s, int x, int y, int w, int h, Hua_Rong_Road road)// 构造函数
{
super(s);
name = s;
this.number = number;
left_x = x;
left_y = y;
width = w;
height = h;
setBackground(Color.orange);
road.add(this);
addKeyListener(road);
setBounds(x, y, w, h);
addFocusListener(this);
rect = new Rectangle(x, y, w, h);
}
public void focusGained(FocusEvent e) {
setBackground(Color.red);
}
public void focusLost(FocusEvent e) {
setBackground(Color.orange);
}
}
public class Hua_Rong_Road extends Applet implements KeyListener,
ActionListener {
People people[] = new People[10];
Rectangle left, right, above, below;// 华容道的边界 .
Button restart = new Button("重新开始");
public void init() {
setLayout(null);
add(restart);
restart.setBounds(5, 5, 80, 25);
restart.addActionListener(this);
people[0] = new People(0, "曹操", 104, 54, 100, 100, this);// 构造曹操
people[1] = new People(1, "关羽", 104, 154, 100, 50, this);// 构造关羽
people[2] = new People(2, "张飞", 54, 154, 50, 100, this);
people[3] = new People(3, "刘备", 204, 154, 50, 100, this);
people[4] = new People(4, "张辽", 54, 54, 50, 100, this);
people[5] = new People(5, "曹仁", 204, 54, 50, 100, this);
people[6] = new People(6, "兵 ", 54, 254, 50, 50, this);
people[7] = new People(7, "兵 ", 204, 254, 50, 50, this);
people[8] = new People(8, "兵 ", 104, 204, 50, 50, this);
people[9] = new People(9, "兵 ", 154, 204, 50, 50, this);
people[9].requestFocus();
left = new Rectangle(49, 49, 5, 260);
people[0].setForeground(Color.white);
right = new Rectangle(254, 49, 5, 260);
above = new Rectangle(49, 49, 210, 5);
below = new Rectangle(49, 304, 210, 5);
}
public void paint(Graphics g) {// 画出华容道的边界:
g.setColor(Color.cyan);
g.fillRect(49, 49, 5, 260);// left.
g.fillRect(254, 49, 5, 260);// right.
g.fillRect(49, 49, 210, 5); // above.
g.fillRect(49, 304, 210, 5);// below.
// 提示曹操逃出位置和按键规则:
g.drawString("点击相应的人物,然后按键盘上的上下左右箭头移动", 100, 20);
g.setColor(Color.red);
g.drawString("曹操到达该位置", 110, 300);
}
public void keyPressed(KeyEvent e) {
People man = (People) e.getSource();// 获取事件源.
man.rect.setLocation(man.getBounds().x, man.getBounds().y);
if (e.getKeyCode() == KeyEvent.VK_DOWN) {
man.left_y = man.left_y + 50; // 向下前进50个单位。
man.setLocation(man.left_x, man.left_y);
man.rect.setLocation(man.left_x, man.left_y);
// 判断是否和其它人物或下边界出现重叠,如果出现重叠就退回50个单位距离。
for (int i = 0; i 10; i++) {
if ((man.rect.intersects(people[i].rect)) (man.number != i)) {
man.left_y = man.left_y - 50;
man.setLocation(man.left_x, man.left_y);
man.rect.setLocation(man.left_x, man.left_y);
}
}
if (man.rect.intersects(below)) {
man.left_y = man.left_y - 50;
man.setLocation(man.left_x, man.left_y);
man.rect.setLocation(man.left_x, man.left_y);
}
}
if (e.getKeyCode() == KeyEvent.VK_UP) {
man.left_y = man.left_y - 50; // 向上前进50个单位。
man.setLocation(man.left_x, man.left_y);
man.rect.setLocation(man.left_x, man.left_y);
// 判断是否和其它人物或上边界出现重叠,如果出现重叠就退回50个单位距离。
for (int i = 0; i 10; i++) {
if ((man.rect.intersects(people[i].rect)) (man.number != i)) {
man.left_y = man.left_y + 50;
man.setLocation(man.left_x, man.left_y);
man.rect.setLocation(man.left_x, man.left_y);
}
}
if (man.rect.intersects(above)) {
man.left_y = man.left_y + 50;
man.setLocation(man.left_x, man.left_y);
man.rect.setLocation(man.left_x, man.left_y);
}
}
if (e.getKeyCode() == KeyEvent.VK_LEFT) {
man.left_x = man.left_x - 50; // 向左前进50个单位。
man.setLocation(man.left_x, man.left_y);
man.rect.setLocation(man.left_x, man.left_y);
// 判断是否和其它人物或左边界出现重叠,如果出现重叠就退回50个单位距离。
for (int i = 0; i 10; i++) {
if ((man.rect.intersects(people[i].rect)) (man.number != i)) {
man.left_x = man.left_x + 50;
man.setLocation(man.left_x, man.left_y);
man.rect.setLocation(man.left_x, man.left_y);
}
}
if (man.rect.intersects(left)) {
man.left_x = man.left_x + 50;
man.setLocation(man.left_x, man.left_y);
man.rect.setLocation(man.left_x, man.left_y);
}
}
if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
man.left_x = man.left_x + 50; // 向右前进50个单位。
man.setLocation(man.left_x, man.left_y);
man.rect.setLocation(man.left_x, man.left_y);
// 判断是否和其它人物或右边界出现重叠,如果出现重叠就退回50个单位距离。
for (int i = 0; i 10; i++) {
if ((man.rect.intersects(people[i].rect)) (man.number != i)) {
man.left_x = man.left_x - 50;
man.setLocation(man.left_x, man.left_y);
man.rect.setLocation(man.left_x, man.left_y);
}
}
if (man.rect.intersects(right)) {
man.left_x = man.left_x - 50;
man.setLocation(man.left_x, man.left_y);
man.rect.setLocation(man.left_x, man.left_y);
}
}
}
public void keyTyped(KeyEvent e) {
}
public void keyReleased(KeyEvent e) {
}
public void actionPerformed(ActionEvent e) {
this.removeAll();
this.init();
}
}
1:
import java.io.IOException;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;
// 华容道原理的拼图游戏。 利用轻组建的套用。
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Choice;
import java.awt.Color;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
public class MyMainFrame extends JFrame implements ActionListener {
/**
*
*/
private static final long serialVersionUID = 1L;
MyCanvas myCanvas;
JPanel panelNorth,panelPreview;
Button start,preview,set;
Container container;
public MyMainFrame() {//初使化
container=this.getContentPane();
start=new Button("开始");
start.addActionListener(this);
preview=new Button("预览");
preview.addActionListener(this);
set = new Button("设置");
set.addActionListener(this);
panelPreview=new JPanel();
panelPreview.setLayout(null);
Icon icon=new ImageIcon ("images/pic_"+MyCanvas.pictureID+".jpg");
JLabel label=new JLabel(icon);
label.setBounds(0,0,400,400);
panelPreview.add(label);
panelNorth=new JPanel();
panelNorth.setBackground(Color.yellow);
panelNorth.add(start);
panelNorth.add(preview);
panelNorth.add(set);
myCanvas=new MyCanvas();
container.add(myCanvas,BorderLayout.CENTER);
container.add(panelNorth,BorderLayout.NORTH);
this.setTitle("成型拼图小游戏-1212");
this.setLocation(300,200);
this.setSize(408,465);
this.setResizable(false);
this.setVisible(true);
this.setDefaultCloseOperation(3);
} //end of 初始化 构造函数
public void actionPerformed(ActionEvent e) {
Button button=(Button)e.getSource();
if(button==start){
myCanvas.Start();
}else if(button==preview){
if(button.getLabel()=="预览"){
container.remove(myCanvas);
container.add(panelPreview);
panelPreview.updateUI();
container.repaint();
button.setLabel("返回");
}else{
container.remove(panelPreview);
container.add(myCanvas);
container.repaint();
button.setLabel("预览");
}
}else if(button==set){
Choice pic = new Choice();
//pic.add("QQ");
pic.add("美女");
int i=JOptionPane.showConfirmDialog(this,pic,"选择图片", JOptionPane.OK_CANCEL_OPTION);
//使用选择对话框来进行选择图片。
if(i==JOptionPane.YES_OPTION){
MyCanvas.pictureID=pic.getSelectedIndex()+5;
myCanvas.reLoadPictrue();
Icon icon=new ImageIcon("images/pic_"+MyCanvas.pictureID+".jpg");
JLabel label=new JLabel(icon);
label.setBounds(0,0,400,400);
panelPreview.removeAll();
panelPreview.add(label);
panelPreview.repaint();
}
}
}
public static void main(String[] args) throws UnsupportedAudioFileException, LineUnavailableException, IOException
{
new MyMainFrame();
} //end of main
}
2:
import java.awt.Rectangle;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
public class MyCanvas extends JPanel implements MouseListener
{
/**
*
*/
private static final long serialVersionUID = 1L;
boolean hasAddActionListener=false;//设置方格的动作监听器的标志位，TRUE为已经添加上动作事件
Cell cell[];//定义方格
Rectangle cellNull;//定义空方格区域 是一个矩形类
public static int pictureID=4;// 当前选择的图片代号
public MyCanvas() {
this.setLayout(null);
this.setSize(400,400);
cellNull=new Rectangle(300,300,100,100);//空方格区域在第三行每三列
cell=new Cell[16];
Icon icon;
for (int i = 0; i 4; i++) {
for(int j=0;j4;j++){
icon=new ImageIcon("images/pic_"+pictureID+"_"+(i*4+j+1)+".jpg");
cell[i*4+j]=new Cell(icon);
cell[i*4+j].setLocation(j*100,i*100);
this.add(cell[i*4+j]);
}
}
this.remove(cell[15]);//移除最后一个多余的方格
} //放置9张小图片并且移调最后一张
public void reLoadPictrue(){//当选择其它图形进行拼图时，需重新加载新图片
Icon icon;
for (int i = 0; i 4; i++) {
for(int j=0;j4;j++){
icon=new ImageIcon("images/pic_"+pictureID+"_"+(i*4+j+1)+".jpg");
cell[i*4+j].setIcon(icon);
}
}
}
public boolean isFinish(){//判断是否拼合成功
for(int i=0;i15;i++)
{ int x=cell[i].getBounds().x;
int y=cell[i].getBounds().y;
if(y/100*4+x/100!=i)
return false;
} //end of for
return true;
}
public void Start(){//对方格进行重新排列，打乱顺序
while(cell[0].getBounds().x=100cell[0].getBounds().y=100){//当第一个方格距左上角较近时
int x=cellNull.getBounds().x;
int y=cellNull.getBounds().y;
int direction=(int)(Math.random()*4);//产生0-4，对应空方格的上下左右移动
if(direction==0){//空方格左移动，与左侧方格互换位置，左侧方格右移动
x-=100;
if(test(x,y)){
for(int j=0;j15;j++){
if((cell[j].getBounds().x==x)(cell[j].getBounds().y==y)){//依次寻找左侧的按钮
cell[j].move("RIGHT",100);
cellNull.setLocation(x,y);
break;//找到后跳出for循环
}
}
}
}else if(direction==1){//RIGHT
x+=100;
if(test(x,y)){
for(int j=0;j15;j++){
if((cell[j].getBounds().x==x)(cell[j].getBounds().y==y)){
cell[j].move("LEFT",100);
cellNull.setLocation(x,y);
break;
}
}
}
}else if(direction==2){//UP
y-=100;
if(test(x,y)){
for(int j=0;j15;j++){
if((cell[j].getBounds().x==x)(cell[j].getBounds().y==y)){
cell[j].move("DOWN",100);
cellNull.setLocation(x,y);
break;
}
}
}
}else{//DOWN
y+=100;
if(test(x,y)){
for(int j=0;j15;j++){
if((cell[j].getBounds().x==x)(cell[j].getBounds().y==y)){
cell[j].move("UP",100);
cellNull.setLocation(x,y);
break;
}
}
}
}
}
if(!hasAddActionListener)//如果尚未添加动作事件，则添加
for(int i=0;i15;i++)//为第个方格添加动作事件，这样单击按钮就能移动了
cell[i].addMouseListener(this);
hasAddActionListener=true;
}
private boolean test(int x,int y){
if((x=0x=200)||(y=0y=200))
return true;
else
return false;
}
public void mouseClicked(MouseEvent e) { }
public void mouseEntered(MouseEvent e) { }
public void mouseExited(MouseEvent e) { }
public void mouseReleased(MouseEvent e) { }
public void mousePressed(MouseEvent e) {
//方格的鼠标事件，因为用到了MyCanvas中的一些方法，因此没有在Cell类中处理鼠标事件
Cell button=(Cell)e.getSource();
int x1=button.getBounds().x;//得到所单击方格的坐标
int y1=button.getBounds().y;
int x2=cellNull.getBounds().x;//得到空方格的坐标
int y2=cellNull.getBounds().y;
if(x1==x2y1-y2==100)//进行比较，如果满足条件则进行交换
button.move("UP",100);
else if(x1==x2y1-y2==-100)
button.move("DOWN",100);
else if(x1-x2==100y1==y2)
button.move("LEFT",100);
else if(x1-x2==-100y1==y2)
button.move("RIGHT",100);
else
return;//不满足就不进行任何处理
cellNull.setLocation(x1,y1);
this.repaint();
if(this.isFinish()){//进行是否完成的判断
JOptionPane.showMessageDialog(this,"景锋恭喜你完成拼图,加油！想继续下一关么？");
for(int i=0;i15;i++)
cell[i].removeMouseListener(this);//如果已完成，撤消鼠标事件，鼠标单击方格不在起作用
hasAddActionListener=false;
}
}
}
3:
import javax.swing.Icon;
import javax.swing.JButton;
public class Cell extends JButton {
/**
*
*/
private static final long serialVersionUID = 1L;
Cell(Icon icon){//实际为ICON
super(icon);
this.setSize(100,100);
}
public void move(String direction,int sleep){//方格的移动
if(direction=="UP"){
this.setLocation(this.getBounds().x,this.getBounds().y-100);
}else if(direction=="DOWN"){
this.setLocation(this.getBounds().x,this.getBounds().y+100);
}else if(direction=="LEFT"){
this.setLocation(this.getBounds().x-100,this.getBounds().y);
}else{
this.setLocation(this.getBounds().x+100,this.getBounds().y);
}
}
}