java Conway的生命图形游戏
我正在尝试制作康威的生活游戏程序，但我的JFrame上实际显示的网格有问题。当我像下面这样编写代码时，我的paintComponent工作得非常好：
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.util.Random;
public class AutomataTheoryAssignmentTesting {
public static void main(String[] args) {
RandomTrues grid = new RandomTrues(); // I know these two lines don't affect the grid added
grid.neighborAnalysis(); // to my JPanel, hence why I'm trying to find an alternative solution
MakeTotalPanel frame = new MakeTotalPanel();
frame.setTitle("Game of Life");
frame.setSize(620, 620);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
class MakeTotalPanel extends JFrame {
MakeTotalPanel() {
setLayout(new GridLayout(30, 30, 2, 2));
for(int i = 0; i < 900; i++) {
add(new RandomTrues());
}
}
}
但是，为了解决我在代码注释中所写的难题，我知道我需要做如下操作：
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.util.Random;
public class AutomataTheoryAssignmentTesting {
public static void main(String[] args) {
MakeTotalPanel frame = new MakeTotalPanel();
frame.setTitle("Game of Life");
frame.setSize(620, 620);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
class MakeTotalPanel extends JFrame {
RandomTrues grid = new RandomTrues();
MakeTotalPanel() {
grid.neighborAnalysis();
setLayout(new GridLayout(30, 30, 2, 2));
for(int i = 0; i < 900; i++) {
add(grid);
}
}
}
然而，当我这样做的时候，只有右上角的一个小正方形在作画。我剩下的代码如下。。。提前谢谢你
class RandomTrues extends JPanel {
boolean[][] gridvalues;
int rowcounter = 0;
int colcounter = 0;
public RandomTrues() {
gridvalues = new boolean[30][30];
Random generator = new Random();
double b;
for(int i=0; i<30; i++) {
for(int j=0; j<30; j++) {
b = generator.nextDouble() * 100;
if (b <= 62)
gridvalues[i][j] = true;
else
gridvalues[i][j] = false;
}
}
}
// reading the values of the grid and marking to change or not to change
void neighborAnalysis() {
int g;
int h;
boolean[][] change = new boolean[30][30];
for(int k=0; k<30; k++) {
for(int l=0; l<30; l++) {
change[k][l] = false;
}
for(g=0; g<30; g++) {
for(h=0; h<30; h++) {
if(g==0) {
if(h==0) {
if(gridvalues[g][h] == true) {
if(gridvalues[g+1][h]==false && gridvalues[g][h+1]==false) {
change[g][h]=true;
}
}
}
else if(h==29) {
if(gridvalues[g][h]==true) {
if(gridvalues[g+1][h]==false && gridvalues[g][h-1]==false) {
change[g][h]=true;
}
}
}
else {
if(gridvalues[g][h]==false) {
if(gridvalues[g+1][h]==true && gridvalues[g][h+1]==true && gridvalues[g][h-1]==true) {
change[g][h]=true;
}
}
else if(gridvalues[g][h]==true) {
if((gridvalues[g+1][h]==false && gridvalues[g][h-1]==false) || (gridvalues[g+1][h]==false && gridvalues[g][h+1]==false) || (gridvalues[g][h+1]==false && gridvalues[g][h-1]==false)) {
change[g][h]=true;
}
}
}
}
if(g==29) {
if(h==0) {
if(gridvalues[g][h]==true) {
if(gridvalues[g-1][h]==false && gridvalues[g][h+1]==false) {
change[g][h]=true;
}
}
}
else if(h==29) {
if(gridvalues[g][h]==true) {
if(gridvalues[g-1][h]==false && gridvalues[g][h-1]==false) {
change[g][h]=true;
}
}
}
else {
if(gridvalues[g][h]==false) {
if(gridvalues[g-1][h]==true && gridvalues[g][h+1]==true && gridvalues[g][h-1]==true) {
change[g][h]=true;
}
}
else if(gridvalues[g][h]==true) {
if((gridvalues[g-1][h]==false && gridvalues[g][h-1]==false) || (gridvalues[g-1][h]==false && gridvalues[g][h+1]==false) || (gridvalues[g][h+1]==false && gridvalues[g][h-1]==false)) {
change[g][h]=true;
}
}
}
}
else if(g<29 && g>0) {
if(h==0) {
if(gridvalues[g][h]==false) {
if(gridvalues[g-1][h]==true && gridvalues[g][h+1]==true && gridvalues[g+1][h]==true) {
change[g][h]=true;
}
}
else if(gridvalues[g][h]==true) {
if((gridvalues[g-1][h]==false && gridvalues[g+1][h]==false) || (gridvalues[g-1][h]==false && gridvalues[g][h+1]==false) || (gridvalues[g][h+1]==false && gridvalues[g+1][h]==false)) {
change[g][h]=true;
}
}
}
if(h==29) {
if(gridvalues[g][h]==false) {
if(gridvalues[g-1][h]==true && gridvalues[g+1][h]==true && gridvalues[g][h-1]==true) {
change[g][h]=true;
}
}
else if(gridvalues[g][h]==true) {
if((gridvalues[g-1][h]==false && gridvalues[g][h-1]==false) || (gridvalues[g-1][h]==false && gridvalues[g+1][h]==false) || (gridvalues[g+1][h]==false && gridvalues[g][h-1]==false)) {
change[g][h]=true;
}
}
}
else if(h<29 && h>0) {
if(gridvalues[g][h]==false) {
if((gridvalues[g-1][h]==true && gridvalues[g+1][h]==true && gridvalues[g][h+1]==true)||(gridvalues[g+1][h]==true && gridvalues[g][h+1]==true && gridvalues[g][h-1]==true)||(gridvalues[g][h+1]==true && gridvalues[g][h-1]==true && gridvalues[g-1][h]==true)||(gridvalues[g][h-1]==true && gridvalues[g+1][h]==true && gridvalues[g-1][h]==true)) {
change[g][h]=true;
}
}
else if(gridvalues[g][h]==true) {
if((gridvalues[g-1][h]==false && gridvalues[g+1][h]==false && gridvalues[g][h+1]==false)||(gridvalues[g+1][h]==false && gridvalues[g][h+1]==false && gridvalues[g][h-1]==false)||(gridvalues[g][h+1]==false && gridvalues[g][h-1]==false && gridvalues[g-1][h]==false)||(gridvalues[g][h-1]==false && gridvalues[g+1][h]==false && gridvalues[g-1][h]==false)) {
change[g][h]=true;
}
else if(gridvalues[g-1][h]==true && gridvalues[g+1][h]==true && gridvalues[g][h+1]==true && gridvalues[g][h-1]==true) {
change[g][h]=true;
}
}
}
}
}
}
// changing the grid values
g = 0;
h = 0;
for(g=0; g<30; g++) {
for(h=0; h<30; h++) {
if(change[g][h]==true) {
gridvalues[g][h] = !gridvalues[g][h];
change[g][h] = false;
}
}
}
}
}
//paint component
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawRect(1, 1, 30, 30);
if(gridvalues[rowcounter][colcounter] == false) {
g.setColor(Color.RED);
g.fillRect(1, 1, 30, 30);
}
else if(gridvalues[rowcounter][colcounter] == true) {
g.setColor(Color.WHITE);
g.fillRect(1, 1, 30, 30);
}
rowcounter = rowcounter + 1;
colcounter = colcounter + 1;
}
}
# 1 楼答案
这里：
您试图多次将同一组件、网格添加到GUI中，但这行不通，因为一个组件只能显示在一个容器中
你的逻辑似乎有问题，因为RandomTrues类已经拥有一个30乘30的网格，所以假设RandomTrues有效，将它添加到JFrame中一次而不是900次就足够了
如果这是我的程序，我会尝试将程序逻辑从GUI中分离出来，或者换一种方式，将模型从视图中分离出来。视图将是一个JPanel，其中包含一个单元格网格，如果需要，可以是JPanel，并带有允许外部类（控件）设置这些单元格状态的方法