嗨我在假期里一直用Java制作一个刽子手游戏。我几乎完成了，但我在重新绘制/更新窗口时遇到了一些问题。
所以，当生命失去时，我正在移除面板然后添加另一个面板，但由于某种原因，它会一直向左移动或有时向右移动，这意味着我的一些线条不在重绘。
编辑：我仍然遇到麻烦，我想我现在就离开它，除非其他人有其他建议。
import java.awt.*;
import java.awt.event.*;
import java.util.ArrayList;
import javax.swing.*;
/** class to display a JFrame object using border layout */
public class HangmanJFrame extends JFrame implements ActionListener {
private JPanel centerPanel;
private JPanel southPanel;
private JTextField textField;
private LinePanel line;
private String [] wordList = {"computer","java","activity","alaska","appearance","article",
"automobile","basket","birthday","canada","central","character","chicken","chosen",
"cutting","daily","darkness","diagram","disappear","driving","effort","establish","exact",
"establishment","fifteen","football","foreign","frequently","frighten","function","gradually",
"hurried","identity","importance","impossible","invented","italian","journey","lincoln",
"london","massage","minerals","outer","paint","particles","personal","physical","progress",
"quarter","recognise","replace","rhythm","situation","slightly","steady","stepped",
"strike","successful","sudden","terrible","traffic","unusual","volume","yesterday" };
public ArrayList<String> usedLetters = new ArrayList(); // list of used letter by user
public ArrayList<String> correctLetters = new ArrayList();
public String userInput = "";
private int numLives = 6; // number of lives
public String theWord; // the wrong which is chosen
JButton exitButton;
JButton playAgain;
// no-argument constructor
public HangmanJFrame() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
theWord = pickWord();
correctLetters = new ArrayList(theWord.length());
setSize(600,500);
setLocation(100, 100);
setTitle("Hangman Game");
setLayout(new BorderLayout());
centerPanel = new JPanel();
line = new LinePanel(15,theWord,usedLetters);
centerPanel.setSize(500,500);
centerPanel.setBackground(Color.WHITE);
centerPanel.add(line);
add(centerPanel, BorderLayout.CENTER);
textField = new JTextField(20);
textField.addActionListener(this);
playAgain = new JButton("Play Again");
exitButton = new JButton("Exit");
exitButton.addActionListener(this);
playAgain.addActionListener(this);
southPanel = new JPanel();
southPanel.setBackground(Color.BLACK);
southPanel.setLayout(new GridLayout(0,3));
southPanel.add(playAgain);
southPanel.add(textField);
southPanel.add(exitButton);
add(southPanel, BorderLayout.SOUTH);
}
// Picks a word, latter it will be picked randomly.
private String pickWord(){
return wordList[0];
}
// This method check wither the input is valid
// i.e. its in the alphabet.
private boolean checkInput(String s){
String [] alphabet = {"a","b","c","d","e","f",
"g","h","i","j","k","l","m","n","o","p",
"q","r","s","t","u","v","w","x","y","z"};
for (int i = 0; i < alphabet.length; i++){
if (s.equals(alphabet[i]) && s.length() <= 1){
return true;
}
}
return false;
}
/**
*
*/
public void Play(){
if (numLives > 0){
if (userInput.length() == 1 && usedLetters.contains(userInput) == false &&
checkInput(userInput) == true){
usedLetters.add(userInput);
if (theWord.contains(userInput) == true){
correctLetters.add(userInput);
centerPanel.removeAll();
line = new LinePanel(20,theWord,correctLetters);
centerPanel.add(line);
centerPanel.revalidate();
}
else{
numLives = numLives - 1;
centerPanel.removeAll();
line = new LinePanel(numLives,theWord,correctLetters);
centerPanel.add(line);
centerPanel.revalidate();
}
}
else if (userInput.length() > 1)
System.out.println("Enter a valid letter");
else if (userInput.length() == 1 && checkInput(userInput) == true && theWord.contains(userInput)){
correctLetters.add(userInput);
}
centerPanel.removeAll();
line = new LinePanel(20,theWord,usedLetters);
centerPanel.add(line);
centerPanel.revalidate();
}
}
// return true if the word and the correctly used letters list match
public boolean checkWord(String s, ArrayList<String> t){
String temp = "";
for (int i = 0; i < s.length(); i++){
if ( t.contains(s.substring(i, i+1)) == true){
temp += s.substring(i, i+1);
}
}
if (s.equals(temp)){
return true;
}
return false;
}
public void actionPerformed(ActionEvent evt) {
String temp = textField.getText();
if (temp.length() == 1){
userInput = temp;
}
textField.selectAll();
if (checkWord(theWord, correctLetters) != true){
Play();
}
if (evt.getSource() == exitButton){
System.exit(0);
}
// if (evt.getSource() == playAgain){
// removeAll();
// repaint();
//
// }
}
}
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Line2D;
import java.util.ArrayList;
import javax.swing.JPanel;
public class LinePanel extends JPanel {
int x = 5;
String theWord = "";
ArrayList<String> letterList;
public LinePanel(int num, String t, ArrayList<String> s) {
super(); // 300,350
setPreferredSize(new Dimension(400,400));
setBackground(Color.RED);
this.x = num;
this.theWord = t;
letterList = cloneList(s);
}
private ArrayList<String> cloneList(ArrayList<String> aList) {
ArrayList<String> clonedList = new ArrayList<String>(aList.size());
for (String letter : aList)
clonedList.add(letter);
return clonedList;
}
public int getX() {
return x;
}
public void setX(int x) {
this.x = x;
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
if (x == 15 || x != 15){
Line2D line = new Line2D.Double(0, 250, 80, 250); // Creates base
Line2D line2 = new Line2D.Double(40, 50, 40, 250); // Creates vertical line
Line2D line3 = new Line2D.Double(40, 50, 150, 50); // Creates horizontal line
Line2D line4 = new Line2D.Double(150, 50, 150, 80); // Creates small line to hang the man
g2.setStroke(new BasicStroke(5.0f)); // Line thickness
g2.setColor(Color.BLACK); // Line colour
//draw shape of line
g2.draw(line);
g2.draw(line2);
g2.draw(line3);
g2.draw(line4);
int x1 = 0; int y = 320;
for (int i = 0; i < theWord.length();i++){
g2.drawLine(x1, y, x1 + 20, y);
x1 += 50;
}
}
// head
if (x == 5 || x < 5){
System.out.println("uheuheuha");
g2.setStroke(new BasicStroke(5.0f));
g2.drawOval(135, 85, 35, 35);
}
// body
if (x == 4 || x < 4){
g2.drawLine(150, 120, 150, 190);
}
// left arm
if (x == 3 || x < 3){
g2.drawLine(150, 140, 125, 155);
}
// right arm
if (x == 2 || x < 2){
g2.drawLine(150, 140, 175, 155);
}
// left leg and foot
if (x == 1 || x < 1){
g2.drawLine(150, 190, 125, 200); // leg
g2.drawLine(125, 200, 120, 190); // foot
}
// right leg and foot
if (x == 0){
g2.drawLine(150, 190, 175, 200); // leg
g2.drawLine(175, 200, 180, 190); // foot
}
// Show whole word on screen
if (x == 20){
int x1 = 3; int y = 317;
String temp = "";
for (int i = 0; i < theWord.length(); i++){
if ( letterList.contains(theWord.substring(i, i+1)) == true){
temp += theWord.substring(i, i+1);
}
else{
temp += " ";
}
}
for (int i = 0; i < temp.length() ;i++){
g2.setColor(Color.BLACK);
Font font = new Font("Arial", Font.PLAIN, 25);
g2.setFont(font);
g2.drawString(temp.substring(i, i+1), x1, y);
x1 += 50;
}
x1 = 3; y = 370;
for (int i = 0; i < letterList.size() ;i++){
if (theWord.contains(letterList.get(i)) == false){
g2.drawString(letterList.get(i), x1, y );
x1 += 50;
}
}
}
}
}
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.Line2D;
import java.util.ArrayList;
import javax.swing.JPanel;
public class LinePanel extends JPanel {
int x = 5;
String theWord = "";
ArrayList<String> letterList;
public LinePanel(int num, String t, ArrayList<String> s) {
super(); // 300,350
setPreferredSize(new Dimension(400,400));
setBackground(Color.RED);
this.x = num;
this.theWord = t;
letterList = cloneList(s);
}
private ArrayList<String> cloneList(ArrayList<String> aList) {
ArrayList<String> clonedList = new ArrayList<String>(aList.size());
for (String letter : aList)
clonedList.add(letter);
return clonedList;
}
public int getX() {
return x;
}
public void setX(int x) {
this.x = x;
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
if (x == 15 || x != 15){
Line2D line = new Line2D.Double(0, 250, 80, 250); // Creates base
Line2D line2 = new Line2D.Double(40, 50, 40, 250); // Creates vertical line
Line2D line3 = new Line2D.Double(40, 50, 150, 50); // Creates horizontal line
Line2D line4 = new Line2D.Double(150, 50, 150, 80); // Creates small line to hang the man
g2.setStroke(new BasicStroke(5.0f)); // Line thickness
g2.setColor(Color.BLACK); // Line colour
//draw shape of line
g2.draw(line);
g2.draw(line2);
g2.draw(line3);
g2.draw(line4);
int x1 = 0; int y = 320;
for (int i = 0; i < theWord.length();i++){
g2.drawLine(x1, y, x1 + 20, y);
x1 += 50;
}
}
// head
if (x == 5 || x < 5){
g2.setStroke(new BasicStroke(5.0f));
g2.drawOval(135, 85, 35, 35);
}
// body
if (x == 4 || x < 4){
g2.drawLine(150, 120, 150, 190);
}
// left arm
if (x == 3 || x < 3){
g2.drawLine(150, 140, 125, 155);
}
// right arm
if (x == 2 || x < 2){
g2.drawLine(150, 140, 175, 155);
}
// left leg and foot
if (x == 1 || x < 1){
g2.drawLine(150, 190, 125, 200); // leg
g2.drawLine(125, 200, 120, 190); // foot
}
// right leg and foot
if (x == 0){
g2.drawLine(150, 190, 175, 200); // leg
g2.drawLine(175, 200, 180, 190); // foot
}
// Show whole word on screen
if (x == 20){
int x1 = 3; int y = 317;
String temp = "";
for (int i = 0; i < theWord.length(); i++){
if ( letterList.contains(theWord.substring(i, i+1)) == true){
temp += theWord.substring(i, i+1);
}
else{
temp += " ";
}
}
for (int i = 0; i < temp.length() ;i++){
g2.setColor(Color.BLACK);
Font font = new Font("Arial", Font.PLAIN, 25);
g2.setFont(font);
g2.drawString(temp.substring(i, i+1), x1, y);
x1 += 50;
}
x1 = 3; y = 370;
for (int i = 0; i < letterList.size() ;i++){
if (theWord.contains(letterList.get(i)) == false){
g2.drawString(letterList.get(i), x1, y );
x1 += 50;
}
}
}
}
}
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
public class PlayHangman {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
HangmanJFrame window = new HangmanJFrame();
window.setVisible(true);
}
}
答案 0 :(得分：4)
请勿移除并添加面板。只需更改存储生命的变量并强制重新绘制。
答案 1 :(得分：1)
虽然我无法使用您的代码进行测试，但我有两个模糊的想法：
请记住，swing和/或awt组件的更新应始终在正确的线程中执行。考虑使用invokeLater进行一些测试：
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
// do your display modifications here
}
});
您可以尝试在面板上使用invalidate / validate，这可能有助于Java意识到某些事情发生了变化。
我希望这有助于解决您的问题 - 祝您好运！