问题描述
我如何创建 Rectangle 循环，使其看起来像游戏中的一堵墙？
我不必分别创建和绘制每个矩形。在 Rectangle 课中，我没有找到设置坐标的 setter。
解决方法
我创造了一些东西，您可能可以将其用于我正在开发的坦克游戏。
这是图形界面
要使用此 GUI，请左键单击要放置墙的位置。如果您左键单击墙壁，墙壁部分就会消失。
在 SaveGameGridListener 类的 actionPerformed 方法中，我硬编码了文本文件输出的特定位置。你会想要改变它。
这个 GUI 的输出是一个 44 个字符的 22 行文本文件，由 0 和 1 值组成。零表示比赛场地，一表示墙壁。您可能需要为 Packman 游戏调整比赛场地的尺寸。
这是这个特定游戏板的文本文件。
00000000000000000000011000000000000000000000
00000000000000000000011000000000000000000000
00000000000000000000000000000000000000000000
00000111000000000000000000000000000011100000
00000000000000000000000000000000000000000000
00000000000001111000000000011110000000000000
00000000000001000000000000000010000000000000
00001100000000000000000000000000000000110000
00000100000000000000000000000000000000100000
00000100000000000000000000000000000000100000
00000100011000000000011000000000011000100000
00000100011000000000011000000000011000100000
00000100000000000000000000000000000000100000
00000100000000000000000000000000000000100000
00001100000000000000000000000000000000110000
00000000000001000000000000000010000000000000
00000000000001111000000000011110000000000000
00000000000000000000000000000000000000000000
00000111000000000000000000000000000011100000
00000000000000000000000000000000000000000000
00000000000000000000011000000000000000000000
00000000000000000000011000000000000000000000
现在，我的游戏板很稀疏。你的游戏板会有更多的墙，但你可以使用和我一样的原则。
- 创建一个包含零和一的文本文件来生成您的游戏板。
- 使用文本文件创建您的游戏板。
这是我使用的完整的可运行代码。我把所有的类都放在了内部类中，这样我就可以将代码作为一个块发布。该代码需要项目的 Resources 文件夹中的 grid.txt 文件。
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
import javax.swing.filechooser.FileFilter;
public class GenerateGameGrid implements Runnable {
public static void main(String[] args) {
SwingUtilities.invokeLater(new GenerateGameGrid());
}
@Override
public void run() {
new GenerateGameGridFrame(new GameGrid());
}
public class GenerateGameGridFrame {
private final GameGrid gameGrid;
private final GenerateGameGridPanel generateGameGridPanel;
private final JFrame frame;
public GenerateGameGridFrame(GameGrid gameGrid) {
this.gameGrid = gameGrid;
this.generateGameGridPanel = new GenerateGameGridPanel(this,gameGrid);
this.frame = createAndShowGUI();
}
private JFrame createAndShowGUI() {
JFrame frame = new JFrame("Generate Game Grid");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setJMenuBar(createJMenuBar());
frame.add(generateGameGridPanel,BorderLayout.CENTER);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
System.out.println(frame.getSize());
return frame;
}
private JMenuBar createJMenuBar() {
JMenuBar menuBar = new JMenuBar();
JMenu fileMenu = new JMenu("File");
JMenuItem saveItem = new JMenuItem("Save Game Grid... ");
saveItem.setAccelerator(KeyStroke.getKeyStroke("control S"));
saveItem.addActionListener(new SaveGameGridListener(this,gameGrid));
fileMenu.add(saveItem);
fileMenu.addSeparator();
JMenuItem exitItem = new JMenuItem("Exit");
exitItem.setAccelerator(KeyStroke.getKeyStroke("alt X"));
exitItem.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent event) {
frame.dispose();
System.exit(0);
}
});
fileMenu.add(exitItem);
menuBar.add(fileMenu);
return menuBar;
}
public JFrame getFrame() {
return frame;
}
public void repaint() {
generateGameGridPanel.repaint();
}
}
public class GameGrid {
private final int blockwidth;
private final int margin;
private final int[][] grid;
private final Color backgroundColor;
private final Color foregroundColor;
public GameGrid() {
this.blockwidth = 24;
this.margin = 10;
this.backgroundColor = new Color(187,71,14);
this.foregroundColor = new Color(244,192,83);
this.grid = readGrid();
}
private int[][] readGrid() {
int[][] grid = new int[22][44];
try {
readGrid(grid,"grid.txt");
} catch (IOException e) {
e.printStackTrace();
}
return grid;
}
private void readGrid(int[][] grid,String filename) throws IOException {
InputStream is = getClass().getResourceAsStream("/" + filename);
InputStreamReader streamReader = new InputStreamReader(is,StandardCharsets.UTF_8);
BufferedReader reader = new BufferedReader(streamReader);
int row = 0;
String line = reader.readLine();
while (line != null) {
char[] chars = line.toCharArray();
for (int column = 0; column < chars.length; column++) {
grid[row][column] = Integer.valueOf(Character.toString(chars[column]));
}
row++;
line = reader.readLine();
}
reader.close();
}
public int[][] getGrid() {
return grid;
}
public Color getBackgroundColor() {
return backgroundColor;
}
public Color getForegroundColor() {
return foregroundColor;
}
public int getBlockwidth() {
return blockwidth;
}
public int getMargin() {
return margin;
}
}
public class GenerateGameGridPanel extends JPanel {
private static final long serialVersionUID = 1L;
private final GameGrid gameGrid;
// private final GenerateGameGridFrame frame;
public GenerateGameGridPanel(GenerateGameGridFrame frame,GameGrid gameGrid) {
// this.frame = frame;
this.gameGrid = gameGrid;
int[][] grid = gameGrid.getGrid();
int blockwidth = gameGrid.getBlockwidth();
int margin = gameGrid.getMargin();
int height = blockwidth * (grid.length + 2) + margin + margin;
int width = blockwidth * (grid[0].length + 2) + margin + margin;
this.setBackground(gameGrid.getBackgroundColor());
this.setPreferredSize(new Dimension(width,height));
this.addMouseListener(new BlockListener(frame,gameGrid));
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(
RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
drawBorder(g2d);
drawGrid(g2d,gameGrid.getGrid());
}
private void drawBorder(Graphics2D g2d) {
int blockwidth = gameGrid.getBlockwidth();
int margin = gameGrid.getMargin();
int x = margin;
int y = margin;
int width = getWidth() - margin - margin;
int height = blockwidth;
g2d.setColor(gameGrid.getForegroundColor());
g2d.fillRect(x,y,width,height);
x = margin;
y = margin;
width = blockwidth;
height = getHeight() - margin - margin;
g2d.fillRect(x,height);
x = margin;
y = getHeight() - margin - blockwidth;
width = getWidth() - margin - margin;
height = blockwidth;
g2d.fillRect(x,height);
x = getWidth() - blockwidth - margin;
y = margin;
width = blockwidth;
height = getHeight() - margin - margin;
g2d.fillRect(x,height);
}
private void drawGrid(Graphics2D g2d,int[][] grid) {
int blockwidth = gameGrid.getBlockwidth();
int margin = gameGrid.getMargin();
g2d.setColor(gameGrid.getForegroundColor());
for (int row = 0; row < grid.length; row++) {
for (int column = 0; column < grid[row].length; column++) {
if (grid[row][column] == 1) {
int x = (column + 1) * blockwidth + margin;
int y = (row + 1) * blockwidth + margin;
g2d.fillRect(x,blockwidth,blockwidth);
}
}
}
}
}
public class BlockListener extends MouseAdapter {
private final GameGrid gameGrid;
private final GenerateGameGridFrame frame;
public BlockListener(GenerateGameGridFrame frame,GameGrid gameGrid) {
this.frame = frame;
this.gameGrid = gameGrid;
}
@Override
public void mouseReleased(MouseEvent event) {
int[][] grid = gameGrid.getGrid();
int blockwidth = gameGrid.getBlockwidth();
int margin = gameGrid.getMargin();
Point point = event.getPoint();
int row = (point.y - margin - blockwidth) / blockwidth;
int column = (point.x - margin - blockwidth) / blockwidth;
grid[row][column] = grid[row][column] ^ 1;
frame.repaint();
}
}
public class SaveGameGridListener implements ActionListener {
private final GameGrid gameGrid;
private final GenerateGameGridFrame frame;
public SaveGameGridListener(GenerateGameGridFrame frame,GameGrid gameGrid) {
this.frame = frame;
this.gameGrid = gameGrid;
}
@Override
public void actionPerformed(ActionEvent event) {
OSFileChooser fc = new OSFileChooser();
File dir = new File("D:\\Eclipse\\Eclipse-2020-workspace\\com.ggl.combat\\resources");
fc.setCurrentDirectory(dir);
fc.addChoosableFileFilter(new FileTypeFilter(
"Text","txt"));
fc.setAcceptAllFileFilterUsed(false);
int returnVal = fc.showSaveDialog(frame.getFrame());
if (returnVal == OSFileChooser.APPROVE_OPTION) {
File file = fc.getSelectedFile();
try {
writeFile(file);
} catch (IOException e) {
e.printStackTrace();
}
}
}
private void writeFile(File file) throws IOException {
int[][] grid = gameGrid.getGrid();
BufferedWriter writer = new BufferedWriter(new FileWriter(file));
for (int row = 0; row < grid.length; row++) {
StringBuilder builder = new StringBuilder();
for (int column = 0; column < grid[row].length; column++) {
builder.append(grid[row][column]);
}
builder.append(System.lineSeparator());
writer.write(builder.toString());
}
writer.close();
}
}
public class OSFileChooser extends JFileChooser {
private static final long serialVersionUID = 1L;
@Override
public void approveSelection() {
File f = getSelectedFile();
if (f.exists() && getDialogType() == SAVE_DIALOG) {
int result = JOptionPane.showConfirmDialog(this,f.getName() +
" exists,overwrite?","Existing file",JOptionPane.YES_NO_CANCEL_OPTION);
switch (result) {
case JOptionPane.YES_OPTION:
super.approveSelection();
return;
case JOptionPane.NO_OPTION:
return;
case JOptionPane.CLOSED_OPTION:
return;
case JOptionPane.CANCEL_OPTION:
cancelSelection();
return;
}
}
super.approveSelection();
}
@Override
public File getSelectedFile() {
File file = super.getSelectedFile();
if (file != null && getDialogType() == SAVE_DIALOG) {
String extension = getExtension(file);
if (extension.isEmpty()) {
FileTypeFilter filter = (FileTypeFilter) getFileFilter();
if (filter != null) {
extension = filter.getExtension();
String fileName = file.getPath();
fileName += "." + extension;
file = new File(fileName);
}
}
}
return file;
}
public String getExtension(File file) {
String extension = "";
String s = file.getName();
int i = s.lastIndexOf('.');
if (i > 0 && i < (s.length() - 1)) {
extension = s.substring(i + 1).toLowerCase();
}
return extension;
}
}
public class FileTypeFilter extends FileFilter {
private String extension;
private String description;
public FileTypeFilter(String description,String extension) {
this.extension = extension;
this.description = description;
}
@Override
public boolean accept(File file) {
if (file.isDirectory()) {
return true;
}
return file.getName().endsWith("." + extension);
}
@Override
public String getDescription() {
return description + String.format(" (*.%s)",extension);
}
public String getExtension() {
return extension;
}
}
}