所以我和我的两个 friend 再次为学校项目制作了一个小游戏。 我们和以前有同样的想法，但现在它都是图形化的(JPanel、JLabel 等)。 我们有基本的 GUI，但它运行起来真的很慢。 当我按下箭头键时，它会在 1-2 秒内做出响应，如果我连续快速按下，可能需要 15 秒以上。 这是代码:
主要
package game;
import java.awt.GridLayout;
import java.io.IOException;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Gui extends JFrame{
private static final long serialVersionUID = 1L;
int n = 0;
int m = 0;
static MapMake mapMake = new MapMake();
static MapRefresh mapRefresh = new MapRefresh();
static JPanel panel = new JPanel();
static Fighting fighting = null;
public static void main(String[] args) throws IOException {
Gui frame = new Gui();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setTitle("Dungeons and Dragons(and some food)");
frame.setSize(1280, 720);
mapMake.setDiscovered(0, 0, 1);
panel.setLayout(new GridLayout(10, 10, 2, 2));
mapRefresh.MapRefresh();
frame.add(panel);
frame.addKeyListener(new Listener());
frame.setVisible(true);
}
}
map 制作
package game;
public class MapMake{
static int[][] discovered = new int[10][10];
static int[][] content = new int[10][10];
static int heroX = 0;
static int heroY = 0;
public void MapMake(){
discovered[0][0] = 1;
for (int row = 0; row < 10; row++) {
for (int col = 0; col < 10; col++) {
discovered[row][col] = 0;
}
}
discovered[0][0] = 1;
int dragon1 = 3;
int dragon2 = 5;
int dragon3 = 7;
int dragon4 = 9;
int dragon5 = 1;
int food = 25; // id 6
while (dragon1 != 0) {
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 3; j++) {
int x = (int) (Math.random() * 2);
if (x != 1 && dragon1 != 0 && content[i][j] == 0
&& (i > 0 && i < 3 || j > 0 && j < 3)) {
dragon1--;
content[i][j] = 1;
}
}
}
}
while (dragon2 != 0 && food != 0) {
for (int i = 0; i < 5; i++) {
for (int j = 0; j < 5; j++) {
int x = (int) (Math.random() * 2);
if (x != 1 && dragon2 != 0 && content[i][j] == 0
&& (i > 2 && i < 5 || j > 3 && j < 5)) {
dragon2--;
content[i][j] = 2;
}
}
}
}
while (dragon3 != 0) {
for (int i = 0; i < 7; i++) {
for (int j = 0; j < 7; j++) {
int x = (int) (Math.random() * 2);
if (x != 1 && dragon3 != 0 && content[i][j] == 0
&& (i > 4 && i < 7 || j > 4 && j < 7)) {
dragon3--;
content[i][j] = 3;
}
}
}
}
while (dragon4 != 0) {
for (int i = 0; i < 9; i++) {
for (int j = 0; j < 9; j++) {
int x = (int) (Math.random() * 2);
if (x != 1 && dragon4 != 0 && content[i][j] == 0
&& (i > 6 && i < 9 || j > 6 && j < 9)) {
dragon4--;
content[i][j] = 4;
}
}
}
}
while (dragon5 != 0) {
for (int i = 0; i < 10; i++) {
for (int j = 0; j < 10; j++) {
int x = (int) (Math.random() * 2);
if (x != 1 && dragon5 != 0 && content[i][j] == 0
&& (i > 8 && i < 10 || j > 8 && j < 10)) {
dragon5--;
content[i][j] = 5;
}
}
}
}
while (food != 0) {
for (int i = 0; i < 10; i++) {
for (int j = 0; j < 10; j++) {
int x = (int) (Math.random() * 2);
if (x != 1 && food != 0 && content[i][j] == 0) {
food--;
content[i][j] = 6;
}
}
}
}
discovered[0][0] = 1;
}
public int getDiscovered(int i, int j) {
return discovered[i][j];
}
public int getContent(int i, int j) {
return content[i][j];
}
public int getHeroX() {
return heroX;
}
public int getHeroY() {
return heroY;
}
public void setDiscovered(int i, int j, int k) {
MapMake.discovered[i][j] = k;
}
public void setContent(int i, int j, int k) {
MapMake.content[i][j] = k;
}
public void setHeroX(int heroX) {
this.heroX = heroX;
}
public void setHeroY(int heroY) {
this.heroY = heroY;
}
}
map 刷新
package game;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class MapRefresh extends Gui{
static MapMake mapMake = Gui.mapMake;
@SuppressWarnings("unused")
public void MapRefresh() {
BufferedImage hall = null;
BufferedImage valge = null;
JPanel panel = Gui.panel;
for (int i = 0; i < 10; i++) {
for (int j = 0; j < 10; j++) {
// panel.add(new JButton("" + content[i][j]));
if (mapMake.getDiscovered(i, j) == 1) {
panel.add(new JLabel("hero on siin peal"));
} else if (mapMake.getDiscovered(i, j) == 0) {
try {
panel.add(new JLabel(new ImageIcon(hall = ImageIO.read(new File("C:/hall.jpg")))));
} catch (IOException e) {
} catch (NullPointerException e){
}
} else {
try {
panel.add(new JLabel(new ImageIcon(valge = ImageIO.read(new File("C:/valge.jpg")))));
} catch (IOException e) {
} catch (NullPointerException e){
}
}
}
}
}
}
和监听器
package game;
import java.awt.event.*;
import javax.swing.JPanel;
public class Listener extends Gui implements KeyListener{
static MapRefresh mapRefresh = new MapRefresh();
static MapMake mapMake = Gui.mapMake;
static JPanel panel = Gui.panel;
static Fighting fighting = null;
@Override
public void keyPressed(KeyEvent e) {
}
@Override
public void keyReleased(KeyEvent e) {
int x = mapMake.getHeroX();
int y = mapMake.getHeroY();
if (e.getKeyCode() == 37 && y > 0){
mapMake.setDiscovered(x, y-1, 1);
mapMake.setDiscovered(x, y, 2);
mapMake.setHeroY(y - 1);
} else if(e.getKeyCode() == 38 && x > 0){
mapMake.setDiscovered(x-1, y, 1);
mapMake.setDiscovered(x, y, 2);
mapMake.setHeroX(x - 1);
} else if (e.getKeyCode() == 39 && y < 9){
mapMake.setDiscovered(x, y+1, 1);
mapMake.setDiscovered(x, y, 2);
mapMake.setHeroY(y + 1);
} else if (e.getKeyCode() == 40 && x < 9){
mapMake.setDiscovered(x+1, y, 1);
mapMake.setDiscovered(x, y, 2);
mapMake.setHeroX(x + 1);
}
int z = mapMake.getContent(x, y);
panel.removeAll();
System.out.println(e.getKeyCode());
mapRefresh.MapRefresh();
panel.validate();
panel.repaint();
}
@Override
public void keyTyped(KeyEvent e) {
}
}
我读到“Try Catch”正在减慢它的速度。是吗？如果是这样，我怎样才能让它变得更好？或者这完全是垃圾？
请记住，这是我们的第一个学期! 这也是它的一个 pastebin 副本 http://pastebin.com/VM1cTvyX
最佳答案
在您的 MapRefresh 类中，每次调用 MapRefresh 方法时，您都会加载一张图像多达 100 次——2 个嵌套循环，每个循环 10 次迭代。这听起来像是你行动迟缓的根源。我只会加载这两个图像一次，也许是在构造函数中，并在以后需要时引用它们。
关于java - GUI运行真的很慢JAVA，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16091187/