我正在为我的电脑课做一个石头剪刀式游戏。只要生成的图像正在加载（并为您的选择，岩石，纸张或剪刀生成图像），评分就会增加1。你能查看我的代码并告诉我它有什么问题吗？谢谢！
import java.awt.*;
import java.applet.Applet;
import java.awt.event.*;
public class RockPaperScissors extends Applet implements ActionListener {
private Button rockButton;
private Button scissorsButton;
private Button paperButton;
private String buttonPressed = ""; // the label of the button pressed
private int computerValue;
private int myValue;
Image rockimg;
Image rock2img;
Image paperimg;
Image paper2img;
Image scissorsimg;
Image scissors2img;
int score;
int compscore;
int drawscore;
public void init() {
rockimg = getImage(getCodeBase(), "rock.gif");
rock2img = getImage(getCodeBase(), "rock2.gif");
paperimg = getImage(getCodeBase(), "paper.gif");
paper2img = getImage(getCodeBase(), "paper2.gif");
scissorsimg = getImage(getCodeBase(), "scissors.gif");
scissors2img = getImage(getCodeBase(), "scissors2.gif");
paperimg = paperimg.getScaledInstance(350, -1, Image.SCALE_SMOOTH);
paper2img = paper2img.getScaledInstance(350, -1, Image.SCALE_SMOOTH);
rockimg = rockimg.getScaledInstance(200, -1, Image.SCALE_SMOOTH);
rock2img = rock2img.getScaledInstance(200, -1, Image.SCALE_SMOOTH);
scissorsimg = scissorsimg
.getScaledInstance(200, -1, Image.SCALE_SMOOTH);
scissors2img = scissors2img.getScaledInstance(200, -1,
Image.SCALE_SMOOTH);
setSize(800, 600);
rockButton = new Button("Rock");
scissorsButton = new Button("Scissors");
paperButton = new Button("Paper");
add(rockButton);
add(scissorsButton);
add(paperButton);
rockButton.addActionListener(this);
scissorsButton.addActionListener(this);
paperButton.addActionListener(this);
score = 0;
compscore = 0;
drawscore = 0;
myValue = -1;
computerValue = -1;
}
Image offScreenBuffer;
@SuppressWarnings("deprecation")
public void update(Graphics g) {
Graphics gr;
if (offScreenBuffer == null
|| (!(offScreenBuffer.getWidth(this) == this.size().width && offScreenBuffer
.getHeight(this) == this.size().height))) {
offScreenBuffer = this.createImage(size().width, size().height);
}
gr = offScreenBuffer.getGraphics();
paint(gr);
g.drawImage(offScreenBuffer, 0, 0, this);
}
public void actionPerformed(ActionEvent event) {
buttonPressed = ((Button) event.getSource()).getLabel();
computerValue = randomNumber();
translator(buttonPressed);
repaint();
}
// paint is called each time a button is pressed
public void paint(Graphics g) {
g.fillRect(0, 0, getWidth(), getHeight());
computerChoice(g);
ScoreBoard(g);
winner(g);
}
// Randomly generate one of the numbers 0, 1, 2.
int randomNumber() {
return (int) (Math.random() * 3);
}
// Prints on the screen one of the strings "Rock", "Scissors", or "Paper" if
// one of the generated numbers is 0, 1, or 2
void computerChoice(Graphics g) {
if (myValue == -1) {
g.drawString("", 200, 150);
}
if (myValue == 0) {
g.setColor(Color.WHITE);
g.drawString("Your choice: Rock", getWidth() / 2 - 50, 170);
g.drawImage(rockimg, 0, 100, this);
}
if (myValue == 1) {
g.setColor(Color.WHITE);
g.drawString("Your choice: Scissors", getWidth() / 2 - 50, 170);
g.drawImage(scissorsimg, 0, 100, this);
}
if (myValue == 2) {
g.setColor(Color.WHITE);
g.drawString("Your choice: Paper", getWidth() / 2 - 50, 170);
g.drawImage(paperimg, 0, 100, this);
}
if (computerValue == 0) {
g.setColor(Color.WHITE);
g.drawString("Computer's choice: Rock", getWidth() / 2 - 50, 190);
g.drawImage(rock2img, getWidth() - 240, 100, this);
}
if (computerValue == 1) {
g.setColor(Color.WHITE);
g.drawString("Computer's choice: Scissors", getWidth() / 2 - 50,
190);
g.drawImage(scissors2img, getWidth() - 240, 100, this);
}
if (computerValue == 2) {
g.setColor(Color.WHITE);
g.drawString("Computer's choice: Paper", getWidth() / 2 - 50, 190);
g.drawImage(paper2img, getWidth() - 340, 100, this);
}
}
// Translates "Rock" to 0, "Scissors" to 1, and "Paper" to 2.
void translator(String s) {
if (s.equals("Rock")) {
myValue = 0;
} else if (s.equals("Scissors")) {
myValue = 1;
} else if (s.equals("Paper")) {
myValue = 2;
}
}
// Decides the winner.
void winner(Graphics g) {
// Before playing, nothing happens, so print nothing.
if (computerValue == -1) {
g.setColor(Color.WHITE);
g.drawString("", 200, 100);
}
// If the machine and the player have the same thing, it is a draw.
else if (computerValue == myValue) {
g.setColor(Color.WHITE);
g.drawString("Draw", getWidth() / 2 - 50, 210);
drawscore+=1;
}
// Computer beats if
// it has Rock and you have scissors, or it has scissors and you have
// paper or
// you have paper and computer has rock.
else if (computerValue == 0 && myValue == 1 || computerValue == 2
&& myValue == 0 || computerValue == 1 && myValue == 2) {
g.setColor(Color.WHITE);
g.drawString("Computer wins", getWidth() / 2 - 50, 210);
compscore+=1;
}
// You win in any other case
else {
g.setColor(Color.WHITE);
g.drawString("You win", getWidth() / 2 - 50, 210);
score+=1;
}
}
void ScoreBoard(Graphics g){
g.drawString("Computer Score:" + compscore, 300, 560);
g.drawString("Your Score:" + score, 300, 530);
g.drawString("Draws:" + drawscore, 300, 500);
}
}
答案 0 :(得分：1)
每次applet本身调用“update”时都会调用Paint。
绘制调用“赢家”，获胜者说“在每个其他情况下用户获胜”：
// You win in any other case
else {
g.setColor(Color.WHITE);
g.drawString("You win", getWidth() / 2 - 50, 210);
score+=1;
}
我会将您的得分计算代码从paint方法移动到actionPerformed方法中。这将视图与游戏逻辑分开。