这是主要代码
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.applet.Applet;
import java.applet.*;
import java.awt.image.*;
import java.util.*;
import java.net.*;
public class AlcatrazBreakout extends JApplet implements KeyListener, FocusListener {
int choice=0,curloc=0;
boolean focus = false;
boolean left=false, right=false, up=false, down=false, space=false, enter=false;
public double randNum(Graphics canvas)
{
double x;
x=Math.random()*100;
return x;
}
public void init()
{
addKeyListener(this);
addFocusListener(this);
play(getCodeBase(), "SpyHunter.mid");
}
public void paint(Graphics canvas)
{
clearScreen(canvas);
canvas.setColor(Color.BLACK); // Must do this so words will
// display on the screen
if (!focus)
{
canvas.setColor(Color.WHITE);
canvas.drawString("Welcome to Alcatraz Breakout! The objective of the game is to escape Alcatraz.",10,10);
canvas.drawString("Click the screen to begin the game.",10,30);
return;
}
else if (focus)
{
startbody(canvas);
}
}
public void showstats(Graphics canvas)
{
int hp=10,hpmax=10,defense=0,attack=0;
canvas.drawString("HP: " + hp ,1750,10);
canvas.drawString("/" + hpmax,1790,10);
canvas.drawString("Attack: " + attack,1750,30);
canvas.drawString("Defense: " + defense,1750,50);
}
public void startbody(Graphics canvas)
{
space=enter=left=right=up=down=false;
clearScreen(canvas);
canvas.setColor(Color.WHITE);
showstats(canvas);
canvas.drawString("You are in your cell.",0,10);
canvas.drawString("Left: To the Training Room.",0,30);
canvas.drawString("Right: To the Showers",0,50);
curloc=0;
makeMove(canvas,curloc, left,right,up,down);
canvas.drawString(" "+curloc,0,70);
}
public void train(Graphics canvas)
{
System.out.println("You are at train");
space=enter=left=right=up=down=false;
clearScreen(canvas);
canvas.setColor(Color.WHITE);
showstats(canvas);
canvas.drawString("You are in the training room.",0,10);
canvas.drawString("Right: To your cell.",0,30);
makeMove(canvas,curloc,left,right,up,down);
}
public void showers(Graphics canvas)
{
System.out.println("You are in the showers");
space=enter=left=right=up=down=false;
clearScreen(canvas);
canvas.setColor(Color.WHITE);
showstats(canvas);
canvas.drawString("You are in the showers.",0,10);
canvas.drawString("Left: To your cell.",0,30);
curloc=1;
makeMove(canvas,curloc, left,right,up,down);
}
public void cellBlockC(Graphics canvas)
{
space=enter=left=right=up=down=false;
clearScreen(canvas);
canvas.setColor(Color.WHITE);
canvas.drawString("You are in CellBlock C", 0, 10);
canvas.drawString("Left: Back to your cell",0,20);
canvas.drawString("Up: to security room 1", 0, 40);
curloc=2;
makeMove(canvas,curloc, left,right,up,down);
}
public void SecRoom1(Graphics canvas)
{
space=enter=left=right=up=down=false;
clearScreen(canvas);
canvas.setColor(Color.WHITE);
canvas.drawString("Your in Secrity room 1.", 0, 10);
canvas.drawString("Down: Back to Cell Block C",0,20);
canvas.drawString("Up: Left to Guard Post", 0, 40);
curloc=3;
makeMove(canvas,curloc, left,right,up,down);
}
public void tunnel(Graphics canvas)
{
space=enter=left=right=up=down=false;
clearScreen(canvas);
canvas.setColor(Color.WHITE);
canvas.drawString("Your in Secrity room 1.", 0, 10);
canvas.drawString("Down: Back to Cell Block C",0,20);
canvas.drawString("Up: Left to Guard Post", 0, 40);
curloc=7;
makeMove(canvas,curloc, left,right,up,down);
}
public void guardPost(Graphics canvas)
{
space=enter=left=right=up=down=false;
clearScreen(canvas);
canvas.setColor(Color.WHITE);
canvas.drawString("Your in the Guard Post.", 0, 10);
canvas.drawString("Left: to go to the Court Yard",0,20);
canvas.drawString("Right: to go to Security room 1", 0, 40);
canvas.drawString("Up: to go to Solitary Confinement",0,60);
curloc=4;
makeMove(canvas,curloc, left,right,up,down);
}
public void courtyard(Graphics canvas)
{
space=enter=left=right=up=down=false;
clearScreen(canvas);
canvas.setColor(Color.WHITE);
canvas.drawString("Your in the Court Yard", 0, 10);
canvas.drawString("Down: to Security Room 2.",0,20);
canvas.drawString("Up: To Guard Post", 0, 40);
curloc=8;
makeMove(canvas,curloc, left,right,up,down);
}
public void SecRoom2(Graphics canvas)
{
space=enter=left=right=up=down=false;
clearScreen(canvas);
canvas.setColor(Color.WHITE);
canvas.drawString("Your in Security Room 2.", 0, 10);
canvas.drawString("Up: To the Court Yard", 0, 40);
curloc=9;
makeMove(canvas,curloc, left,right,up,down);
}
public void fight(Graphics canvas)
{
space=enter=left=right=up=down=false;
clearScreen(canvas);
canvas.setColor(Color.WHITE);
canvas.drawString("Your at the Final Fight!!!", 0, 10);
curloc=11;
makeMove(canvas,curloc, left,right,up,down);
}
public void free(Graphics canvas)
{
space=enter=left=right=up=down=false;
clearScreen(canvas);
canvas.setColor(Color.WHITE);
canvas.drawString("You Won!!!!", 0, 10);
curloc=11;
makeMove(canvas,curloc, left,right,up,down);
}
public void solitaryConfinement(Graphics canvas)
{
space=enter=left=right=up=down=false;
clearScreen(canvas);
canvas.setColor(Color.WHITE);
canvas.drawString("Your in Solitary Confinement.", 0, 10);
canvas.drawString("Down: Guard Post",0,20);
curloc=5;
makeMove(canvas,curloc, left,right,up,down);
}
public void makeMove(Graphics canvas,int curloc,boolean left, boolean right, boolean up, boolean down )
{
if (curloc==0)
{
if(left)
{
train(canvas);
left=right=up=down=false;
}
}
}
public void delayGame(int numSecs)
{
int delayTime = 1000 * numSecs;
long startDelay = System.currentTimeMillis();
long endDelay = 0;
while (endDelay - startDelay < delayTime)
{
endDelay = System.currentTimeMillis();
}
}
public void clearScreen(Graphics g)
{
g.setColor(Color.BLACK);
g.fillRect(0,0,5000,5000);
}
public void keyPressed(KeyEvent e)
{
int key = e.getKeyCode();
if (key == KeyEvent.VK_LEFT)
{
left = true;
repaint();
}
if (key == KeyEvent.VK_DOWN)
{
down = true;
repaint();
}
if (key == KeyEvent.VK_RIGHT)
{
right = true;
repaint();
}
if (key == KeyEvent.VK_UP)
{
up = true;
repaint();
}
if (key == KeyEvent.VK_SPACE)
{
space = true;
repaint();
}
if (key == KeyEvent.VK_ENTER)
{
enter = true;
repaint();
}
}
public void focusGained(FocusEvent evt) {focus=true; repaint();}
public void focusLost(FocusEvent evt) {focus=false;}
public void keyReleased(KeyEvent e){}
public void keyTyped(KeyEvent e) {}
public void restart(Graphics g){}
}
因此，curloc的编号不会传递到makeMove中，并且程序键也无法正常工作。
谢谢
克里斯
编辑：
你在火车上
[消息重复1075次]
你在火车上
线程“ AWT-EventQueue-1”中的异常java.lang.StackOverflowError
在sun.nio.cs.SingleByteEncoder.encodeArrayLoop（未知来源）
在sun.nio.cs.SingleByteEncoder.encodeLoop（未知来源）
在java.nio.charset.CharsetEncoder.encode（未知来源）
在sun.nio.cs.StreamEncoder.implWrite（未知来源）
在sun.nio.cs.StreamEncoder.write（未知来源）
在java.io.OutputStreamWriter.write（未知源）
在java.io.BufferedWriter.flushBuffer（未知来源）
在java.io.PrintStream.write（未知源）
在java.io.PrintStream.print（未知来源）
在java.io.PrintStream.println（未知来源）
在AlcatrazBreakout.train（AlcatrazBreakout.java:75）
在AlcatrazBreakout.makeMove（AlcatrazBreakout.java:196）
在AlcatrazBreakout.train（AlcatrazBreakout.java:81）
在AlcatrazBreakout.makeMove（AlcatrazBreakout.java:196）
在AlcatrazBreakout.train（AlcatrazBreakout.java:81）
在AlcatrazBreakout.makeMove（AlcatrazBreakout.java:196）
在AlcatrazBreakout.train（AlcatrazBreakout.java:81）
在AlcatrazBreakout.makeMove（AlcatrazBreakout.java:196）
在AlcatrazBreakout.train（AlcatrazBreakout.java:81）
在AlcatrazBreakout.makeMove（AlcatrazBreakout.java:196）
在AlcatrazBreakout.train（AlcatrazBreakout.java:81）
在AlcatrazBreakout.makeMove（AlcatrazBreakout.java:196）
在AlcatrazBreakout.train（AlcatrazBreakout.java:81）
在AlcatrazBreakout.makeMove（AlcatrazBreakout.java:196）
在AlcatrazBreakout.train（AlcatrazBreakout.java:81）
在AlcatrazBreakout.makeMove（AlcatrazBreakout.java:196）
在AlcatrazBreakout.train（AlcatrazBreakout.java:81）
这是我在Eclipse中的控制台输出
最佳答案
你不应该：
重写applet的paint（）方法。通过重写JPanel的paintComponent（）方法来完成自定义绘制，然后将面板添加到小程序中。
使用紧密循环来“延迟”游戏。而是使用Swing计时器来安排游戏的下一步。