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华容道java代码解释 华容道程序( 五 )

IT技术button


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; i10; 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 。

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