所以我只是从小程序开始,当小程序加载时,我正在建造一扇敞开的门和两扇敞开的窗户的房子。当您单击这些窗户或门时,它们将关闭。不过我的问题是我需要做什么才能重新打开这些门窗。我想我需要以某种方式将布尔变量设置为 False 并重新绘制。我会在哪里做这个。我不需要你们为我写代码,我只想知道我应该做什么。
提前谢谢,
瑞克
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
/**
Rick Armstrong
Chapter 14 - House Applet
*/
public class HouseApplet extends Applet {
boolean leftWin, rightWin, door;
public void init()
{
leftWin = false;
rightWin = false;
door = false;
setBackground(Color.white);
addMouseListener(new MyMouseListener());
}
public void paint(Graphics g)
{
super.paint(g);
// Draw the house.
g.setColor(Color.black);
g.drawRect(100, 100, 200, 100);
// Draw the roof
g.drawLine(80, 100, 320, 100);
g.drawLine(80, 100, 200, 40);
g.drawLine(200, 40, 320, 100);
// Draw the left window open.
g.fillRect(120, 130, 40, 40);
// Draw the right window open.
g.fillRect(240, 130, 40, 40);
// Draw the door open.
g.fillRect(180, 130, 40, 70);
if (leftWin) {
// Draw the left window closed.
g.setColor(Color.white);
g.fillRect(120, 130, 40, 40);
g.setColor(Color.black);
g.drawRect(120, 130, 40, 40);
g.drawLine(140, 130, 140, 170);
g.drawLine(120, 150, 160, 150);
}
if (rightWin) {
// Draw the right window closed.
g.setColor(Color.white);
g.fillRect(240, 130, 40, 40);
g.setColor(Color.black);
g.drawRect(240, 130, 40, 40);
g.drawLine(260, 130, 260, 170);
g.drawLine(240, 150, 280, 150);
}
if (door) {
// Draw the door closed.
g.setColor(Color.white);
g.fillRect(180, 130, 40, 70);
g.setColor(Color.black);
g.drawRect(180, 130, 40, 70);
g.fillOval(210, 165, 07, 07);
}
}
private class MyMouseListener implements MouseListener
{
public void mousePressed(MouseEvent e)
{
}
public void mouseClicked(MouseEvent e)
{
int currentx = e.getX();
int currenty = e.getY();
boolean WindowLeft = (currentx >= 120 && currentx < 160 && currenty >= 130 && currenty <= 170);
if (WindowLeft)
{
leftWin = true;
repaint();
}
boolean WindowRight = (currentx >= 240 && currentx < 280 && currenty >= 130 && currenty <= 170);
if (WindowRight)
{
rightWin = true;
repaint();
}
boolean Door = (currentx >= 180 && currentx < 220 && currenty >= 40 && currenty <= 200);
if (Door)
{
door = true;
repaint();
}
else;
}
public void mouseReleased(MouseEvent e)
{
}
public void mouseEntered(MouseEvent e)
{
}
public void mouseExited(MouseEvent e)
{
}
}
}