管道游戏 - 为什么游戏对象不移动？ [英] PipeGame -Why are the game objects not moving?
问题描述
g.drawRect ，但是调用 PipeObject ，则可以绘制到JPanel >循环内部似乎并没有为我工作。我在这里做错了什么？感谢您的任何帮助或解决方案。 这是我的旧问题的更新版本，可以找到> 。 strong> UPDATE - 通过调用 pipe.move（），管道绘制正确，但不移动到左边。
游戏
import java.awt。*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing。*;
import javax.swing.JFrame;
import javax.swing.JPanel;
// import javax.swing.border.EmptyBorder;
导入javax.swing.SwingUtilities;
$ b $ public class Game {
public static void main（String [] args）{
Runnable r = new Runnable（）{
@Override
public void run（）{
//用户看到的GUI（无框架）
final CardLayout cl = new CardLayout（）;
final JPanel gui = new JPanel（cl）;
//如果不需要边框，则删除
//gui.setBorder（new EmptyBorder（10,10,10,10））;
JPanel menu = new JPanel（new GridBagLayout（））;
JButton playGame = new JButton（Play！）;
ActionListener playGameListener = new ActionListener（）{
$ b @Override
public void actionPerformed（ActionEvent e）{
cl.show（gui，game ）;
}
};
playGame.addActionListener（playGameListener）;
Insets margin = new Insets（20，50，20，50）;
playGame.setMargin（margin）;
menu.add（playGame）;
gui.add（menu）;
cl.addLayoutComponent（menu，menu）;
final JPanel pipes = new Pipes（）;
gui.add（pipes）;
cl.addLayoutComponent（pipes，game）;
JFrame f = new JFrame（PipeGame）;
f.add（gui）;
//确保框架关闭后JVM关闭，
//所有非守护线程完成
f.setDefaultCloseOperation（JFrame.DISPOSE_ON_CLOSE）;
//请参阅https://stackoverflow.com/a/7143398/418556进行演示。
f.setLocationByPlatform（true）;
//确保框架的最小尺寸为
//以显示其中的组件
f.pack（）;
//应该最后完成，以避免闪烁，移动，
//调整工件的大小。
f.setVisible（true）;
}
};
// Swing GUIs应该在EDT
上创建和更新// http://docs.oracle.com/javase/tutorial/uiswing/concurrency
SwingUtilities.invokeLater（r）;
$ b import java.util。*;
import java.awt.Graphics;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JPanel;
import javax.swing.Timer;
public class Pipes extends JPanel {
boolean gameNotOver = true;
int x1 = 754;
int y1 = setHeightVal（）;
int y2 = setHeightVal（）;
int y3 = setHeightVal（）;
List< PipeObject> pipes = new ArrayList< PipeObject>（）;
public Pipes（）{
pipes.add（new PipeObject（x1，y1））;
pipes.add（新的PipeObject（x1 + 300，y2））;
pipes.add（新的PipeObject（x1 + 600，y3））;
$ b public void drawEndlessPipes（）{
if（gameNotOver）{
定时器pipeSpeed = new Timer（10，new ActionListener（）{
@ （PipeObject pipe：pipes）{
pipe.move（）;
}
}
} public void actionPerformed（ActionEvent e）{
} ）;
pipeSpeed.start（）;
保护void paintComponent（Graphics g）{
super.paintComponent（g）; （PipeObject pipe：pipes）{
pipe.drawPipe（g）;
public int setHeightVal（）{//获取一个随机数并选择一个预设高度
int num =（int）（9 * Math。 random（）+ 1）;
int val = 0;
if（num == 9）
{
val = 295;
else if（num == 8）
{
val = 246;
else if（num == 7）
{
val = 216;
}
else if（num == 6）
{
val = 185;
}
else if（num == 5）
{
val = 156;
}
else if（num == 4）
{
val = 125;
}
else if（num == 3）
{
val = 96;
}
else if（num == 2）
{
val = 66;
}
else
{
val = 25;
}
return val;
}
public Dimension getPreferredSize（）{
return new Dimension（751,501）;
$ PipeObject
import java.awt.Graphics;
public class PipeObject {
//声明并初始化变量
int x1;
int x2 = 75; //管道宽度，总数是83
int y1 = -1; // Y应该是-1
int y2;
int gap = 130; //空隙高度
公共PipeObject（int x，int y）{
this.x1 = x;
this.y2 = y;
$ b $ public void drawPipe（Graphics g / *，int x1，int y2 * /）{
g.drawRect（x1，y1，x2，y2）; //绘制第1部分
g.drawRect（x1-3，y2-1，x2 + 6,25）; //绘制第二部分
g.drawRect（x1-3，y2 + 25 + gap，x2 + 6,25）; //绘制第3部分
g.drawRect（x1，y2 + 25 + gap + 25，x2,500-y2-49-gap）; //绘制第4部分
}
public void move（）{
x1--;
}
public int getMyX（）{//确定管道的水平位置
return x1-3;
public int getMyY（）{//确定管道的垂直位置
return y2 + 25;
$ div $解析方案
正在绘制超出面板的视觉范围的管道。 I'm wondering why my game objects are not showing. I am able to draw to the JPanel if I use This is an updated version of my old question, which can be found here. UPDATE - The pipes are drawing correctly, but not moving to the left by calling Game Pipes PipeObject
You are painting the pipes beyond the visual bounds of the panel. The dimension of 这篇关于管道游戏 - 为什么游戏对象不移动？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！ Pipes 面板的维度是 751x501 ，但管道从 x1 = 754 。尝试在 Pipes 中更改 x1 到 1 ，您应该看到三个管道。或者，您可以使框架最大化，并且您应该在右侧看到缺少的管道。 g.drawRect outside of the for-each loop, but calling PipeObject inside of the loop doesn't seem to work for me. Am I doing something wrong here? Thanks for any help or solutions.pipe.move().import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
//import javax.swing.border.EmptyBorder;
import javax.swing.SwingUtilities;
public class Game {
public static void main(String[] args) {
Runnable r = new Runnable() {
@Override
public void run() {
// the GUI as seen by the user (without frame)
final CardLayout cl = new CardLayout();
final JPanel gui = new JPanel(cl);
// remove if no border is needed
//gui.setBorder(new EmptyBorder(10,10,10,10));
JPanel menu = new JPanel(new GridBagLayout());
JButton playGame = new JButton("Play!");
ActionListener playGameListener = new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
cl.show(gui, "game");
}
};
playGame.addActionListener(playGameListener);
Insets margin = new Insets(20, 50, 20, 50);
playGame.setMargin(margin);
menu.add(playGame);
gui.add(menu);
cl.addLayoutComponent(menu, "menu");
final JPanel pipes = new Pipes();
gui.add(pipes);
cl.addLayoutComponent(pipes, "game");
JFrame f = new JFrame("PipeGame");
f.add(gui);
// Ensures JVM closes after frame(s) closed and
// all non-daemon threads are finished
f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
// See https://stackoverflow.com/a/7143398/418556 for demo.
f.setLocationByPlatform(true);
// ensures the frame is the minimum size it needs to be
// in order display the components within it
f.pack();
// should be done last, to avoid flickering, moving,
// resizing artifacts.
f.setVisible(true);
}
};
// Swing GUIs should be created and updated on the EDT
// http://docs.oracle.com/javase/tutorial/uiswing/concurrency
SwingUtilities.invokeLater(r);
}
}
import java.util.*;
import java.awt.Graphics;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JPanel;
import javax.swing.Timer;
public class Pipes extends JPanel {
boolean gameNotOver = true;
int x1 = 754;
int y1 = setHeightVal();
int y2 = setHeightVal();
int y3 = setHeightVal();
List<PipeObject> pipes = new ArrayList<PipeObject>();
public Pipes() {
pipes.add(new PipeObject(x1, y1));
pipes.add(new PipeObject(x1 + 300, y2));
pipes.add(new PipeObject(x1 + 600, y3));
}
public void drawEndlessPipes() {
if (gameNotOver) {
Timer pipeSpeed = new Timer(10, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
for (PipeObject pipe : pipes) {
pipe.move();
}
}
});
pipeSpeed.start();
}
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
for (PipeObject pipe : pipes) {
pipe.drawPipe(g);
}
}
public int setHeightVal() { //Get a random number and select a preset height
int num = (int)(9*Math.random() + 1);
int val = 0;
if (num == 9)
{
val = 295;
}
else if (num == 8)
{
val = 246;
}
else if (num == 7)
{
val = 216;
}
else if (num == 6)
{
val = 185;
}
else if (num == 5)
{
val = 156;
}
else if (num == 4)
{
val = 125;
}
else if (num == 3)
{
val = 96;
}
else if (num == 2)
{
val = 66;
}
else
{
val = 25;
}
return val;
}
public Dimension getPreferredSize() {
return new Dimension(751,501);
}
}
import java.awt.Graphics;
public class PipeObject {
//Declare and initialiaze variables
int x1;
int x2 = 75; //pipe width, total is 83
int y1 = -1; // Y should be -1
int y2;
int gap = 130; //gap height
public PipeObject(int x, int y) {
this.x1 = x;
this.y2 = y;
}
public void drawPipe(Graphics g/*, int x1, int y2*/) {
g.drawRect(x1,y1,x2,y2); //Draw part 1
g.drawRect(x1-3,y2-1,x2+6,25); //Draw part 2
g.drawRect(x1-3,y2+25+gap,x2+6,25); //Draw part 3
g.drawRect(x1,y2+25+gap+25,x2,500-y2-49-gap); //Draw part 4
}
public void move() {
x1--;
}
public int getMyX() { //To determine where the pipe is horizontally
return x1-3;
}
public int getMyY() { //To determine where the pipe is vertically
return y2+25;
}
}
Pipes panel is 751x501, but the pipes begin at x1 = 754. Try changing x1 to 1 in Pipes and you should see the three pipes. Or, you can maximize the frame, and you should see the missing pipes far on the right side.
