我正在尝试使用swing制作生命游戏的复制品，我承认我已经使用了来自其他人的代码，因为我正试图绕过它，然后继续我自己的实现。我对他们的代码有一些了解，但我想为他们的代码实现2个额外的功能。然而，我发现它的编写方式带来了问题，因为我想添加一个MouseListener（单击时使单元格生效）和WindowListener（要创建一个开始，暂停和恢复按钮）。
我确实理解它们在某种程度上如何运作，但我需要你的帮助来解决它。
以下是代码：
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.beans.Transient;
import java.util.Random;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.Timer;
@SuppressWarnings("serial")
public class ConwaysGameOfLife extends JPanel implements MouseListener{
private int[][] cellsGrid; // grid is the size of the 2d array
private static final Random rnd = new Random(); // make a new random generator
private int generationCounter; // counter for the generation
public ConwaysGameOfLife(int width, int height) {
this.cellsGrid = new int[width / 4][height / 4];// divides by 4 whatever the width and height set is
setupGrid();
}// new method for creating the game with input sizes for the size of the game window
/*The grid consists fully of cells, the grid size is divided by 4 to make the cells
* setupGrid makes the grid of cells
*
* */
private void setupGrid() {
for (int[] row : cellsGrid) {
for (int j = 0; j < row.length; j++) {
if (rnd.nextDouble() < 0.92)
continue;
row[j] = rnd.nextInt(2);
//
}
}
}
/*
* applies the rule to the existing cells changing their state depending on the position to neighbors set in the rules
* */
public void updateGrid() {
for (int i = 0; i < cellsGrid.length; i++) {
for (int j = 0; j < cellsGrid[i].length; j++) {
applyRule(i, j);
}
}
}
// Rules of game of life cells iterations
private void applyRule(int i, int j) {
int left = 0, right = 0, up = 0, down = 0;
int dUpperLeft = 0, dUpperRight = 0, dLowerLeft = 0, dLowerRight = 0;
//this shows the 8 possible neighbors in terms of position
if (j < cellsGrid.length - 1) {
right = cellsGrid[i][j + 1];
if(i>0)
dUpperRight = cellsGrid[i - 1][j + 1];
if (i < cellsGrid.length - 1)
dLowerRight = cellsGrid[i + 1][j + 1];
}
if (j > 0) {
left = cellsGrid[i][j - 1];
if (i > 0)
dUpperLeft = cellsGrid[i - 1][j - 1];
if (i< cellsGrid.length-1)
dLowerLeft = cellsGrid[i + 1][j - 1];
}
if (i > 0)
up = cellsGrid[i - 1][j];
if (i < cellsGrid.length - 1)
down = cellsGrid[i + 1][j];
int sum = left + right + up + down + dUpperLeft + dUpperRight
+ dLowerLeft
+ dLowerRight;
if (cellsGrid[i][j] == 1) {
if (sum < 2)
cellsGrid[i][j] = 0;
if (sum > 3)
cellsGrid[i][j] = 0;
}
else {
if (sum == 3)
cellsGrid[i][j] = 1;
}
}
@Override
@Transient
public Dimension getPreferredSize() {
return new Dimension(cellsGrid.length * 4, cellsGrid[0].length * 4);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Color gColor = g.getColor();
g.drawString("Generation: " + generationCounter++, 0, 10);
for (int i = 0; i < cellsGrid.length; i++) {
for (int j = 0; j < cellsGrid[i].length; j++) {
if (cellsGrid[i][j] == 1) {
g.setColor(Color.black); // change colour
g.fillRect(j * 8, i * 8, 8, 8); // change size of cells
}
}
}
g.setColor(gColor);
//paint the cells to a colour
}
public static void main(String[] args) {
final ConwaysGameOfLife c = new ConwaysGameOfLife(800, 800);
JFrame frame = new JFrame();
frame.getContentPane().add(c);
frame.pack();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocationByPlatform(true);
frame.setVisible(true);
JButton start=new JButton("START");
/* This method specifies the location and size
* of button. In method setBounds(x, y, width, height)
* x,y) are cordinates from the top left
* corner and remaining two arguments are the width
* and height of the button.
*/
start.setBounds(80,0,80,20);
//Adding button onto the frame
//frame.add(start);
new Timer(100, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
frame.add(start);
c.updateGrid();
c.repaint();
}
}).start();
}
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
}
首先，按钮闪烁，只有在用鼠标悬停时才会出现，仍然会闪烁。然后我希望迭代在按下开始按钮后开始，暂停按钮暂停它，然后恢复（有一个好主意如何工作，但不知道如何使用此代码中完成的swing结构实现它。 ）
其次，我希望细胞在用鼠标按下时生出来，但是，我不确定如何实现mouseListener来实现这一点。
我尝试过像gridGrid [i] [j] = 1;当鼠标点击但我得到错误，这是由于我对cellGrid的实现缺乏了解。
我不期待问题的解决方案，我想要一些指导，以更好地理解听众，也许如何让我更容易理解。谢谢：）
答案 0 :(得分：1)
您的模拟有一个模型，它是一个单元格网格;它有一个视图，它绘制一个8 x 8的正方形来表示网格中的一个单元格。根据建议here，您可以使用linear interpolation映射模型和视图坐标。特别是，给定以下比例，您可以交叉乘法并求解缺失的坐标。
view.x : panelWidthInPixels :: model.x : modelXRange
view.y : panelHeightInPixels :: model.y : modelYRange
作为参考，这个完整的example将鼠标坐标映射到图像中的像素坐标。引用John Conway’s Game of Life in Java Swing的完整示例here。