Java 制作一个简单的计时器
我需要为我用java制作的“轰炸机人”风格的游戏制作一个3秒的停机计时器。我想让炸弹在3秒倒计时时爆炸,但是当我给我的脚本添加延迟时,它会延迟整个程序。(Thread.sleep()做同样的事情) 所以我需要一个非常简单的脚本示例,它运行一个主程序,另一个线程运行一个3秒计时器 我对java非常陌生,所以不要在没有解释的情况下使用太多花哨的词语Java 制作一个简单的计时器,java,multithreading,timer,Java,Multithreading,Timer,我需要为我用java制作的“轰炸机人”风格的游戏制作一个3秒的停机计时器。我想让炸弹在3秒倒计时时爆炸,但是当我给我的脚本添加延迟时,它会延迟整个程序。(Thread.sleep()做同样的事情) 所以我需要一个非常简单的脚本示例,它运行一个主程序,另一个线程运行一个3秒计时器 我对java非常陌生,所以不要在没有解释的情况下使用太多花哨的词语 import java.awt.*; import java.awt.event.*; import javax.swing.*; import ja
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.Border;
public class MainClass extends JFrame implements KeyListener{
private static final long serialVersionUID = 1L;
public MainClass(){
super("WaterBalloonWars");
JPanel panel=new JPanel(new GridLayout(width,height));
myGrid = new JPanel[width][height];
Border border=BorderFactory.createLineBorder(Color.DARK_GRAY, 1);
for(int r=0;r<width-1;r++){
for(int c=0;c<height-1;c++){
double randNum = Math.random();
myGrid[c][r] = new JPanel();
myGrid[c][r].setBackground(Color.WHITE);
myGrid[c][r].setBorder(border);
if(randNum<=0.65){
myGrid[c][r].setBackground(Color.GRAY);
}
if((r & 1)==1){
if((c & 1)==1){
myGrid[c][r].setBackground(Color.BLACK);
}
}
panel.add(myGrid[c][r]);
}
}
myGrid [0][0].setBackground(Color.BLUE);
myGrid [0][1].setBackground(Color.WHITE);
myGrid [1][0].setBackground(Color.WHITE);
myGrid [2][0].setBackground(Color.WHITE);
myGrid [0][2].setBackground(Color.WHITE);
myGrid [10][10].setBackground(Color.RED);
myGrid [10][9].setBackground(Color.WHITE);
myGrid [9][10].setBackground(Color.WHITE);
myGrid [8][10].setBackground(Color.WHITE);
myGrid [10][8].setBackground(Color.WHITE);
super.setContentPane(panel);
this.addKeyListener(new UKeyListener());
this.addKeyListener(new DKeyListener());
this.addKeyListener(new LKeyListener());
this.addKeyListener(new RKeyListener());
this.addKeyListener(new ShiftKeyListener());
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setResizable(false);
}
class ShiftKeyListener implements KeyListener{
@Override
public void keyPressed(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.VK_SHIFT) {
plantBomb(Color.red);
}
}
@Override
public void keyReleased(KeyEvent e) {
}
@Override
public void keyTyped(KeyEvent e) {
}
}
class UKeyListener implements KeyListener{
@Override
public void keyPressed(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.VK_UP) {
redMove(1);
}
}
@Override
public void keyReleased(KeyEvent e) {
}
@Override
public void keyTyped(KeyEvent e) {
}
}
class DKeyListener implements KeyListener{
@Override
public void keyPressed(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.VK_DOWN) {
redMove(2);
}
}
@Override
public void keyReleased(KeyEvent e) {
}
@Override
public void keyTyped(KeyEvent e) {
}
}
class LKeyListener implements KeyListener{
@Override
public void keyPressed(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.VK_LEFT) {
redMove(3);
}
}
@Override
public void keyReleased(KeyEvent e) {
}
@Override
public void keyTyped(KeyEvent e) {
}
}
class RKeyListener implements KeyListener{
@Override
public void keyPressed(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.VK_RIGHT) {
redMove(4);
}
}
@Override
public void keyReleased(KeyEvent e) {
}
@Override
public void keyTyped(KeyEvent e) {
}
}
public void plantBomb(Color color){
if(color.equals(Color.red)){
rbombx=rx;
rbomby=ry;
myGrid[rbombx][rbomby].setBackground(Color.orange);
redBombPlaced=true;
explode(Color.red,2,rbombx,rbomby);
}
if(color.equals(Color.blue)){
}
}
public void explode(Color color,int power,int x,int y){
import java.awt.*;
导入java.awt.event.*;
导入javax.swing.*;
导入javax.swing.border.border;
公共类MainClass扩展JFrame实现KeyListener{
私有静态最终长serialVersionUID=1L;
公共MainClass(){
超级(“水上战争”);
JPanel面板=新JPanel(新网格布局(宽度、高度));
myGrid=新的JPanel[宽度][高度];
Border Border=BorderFactory.createLineBorder(颜色为深灰色,1);
对于(int r=0;r,可以使用TimerTask在线程内创建计时器
使用线程.sleep
实际上会将主线程置于块状态
示例:
public class TimerBomb {
Toolkit toolkit;
Timer timer;
public TimerBomb(int seconds) {
toolkit = Toolkit.getDefaultToolkit();
timer = new Timer();
timer.schedule(new RemindTask (), seconds * 1000);
}
class RemindTask extends TimerTask {
public void run() {
System.out.println("3 second is up");
}
}
public static void main(String args[]) {
System.out.println("About to schedule task.");
Thread t = new Thread(new Runnable() {
@Override
public void run() {
new TimerBomb(3);
}
});
t.start();
System.out.println("Task scheduled.");
}
}
你能展示一些代码吗?你真的为计时器创建了一个单独的线程吗?更新了我原来的帖子谢谢!这真的很有帮助!
new Thread(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(3000);
bombs.explode();
} catch (InterruptedException e) {
}
}
}).start();
public class TimerBomb {
Toolkit toolkit;
Timer timer;
public TimerBomb(int seconds) {
toolkit = Toolkit.getDefaultToolkit();
timer = new Timer();
timer.schedule(new RemindTask (), seconds * 1000);
}
class RemindTask extends TimerTask {
public void run() {
System.out.println("3 second is up");
}
}
public static void main(String args[]) {
System.out.println("About to schedule task.");
Thread t = new Thread(new Runnable() {
@Override
public void run() {
new TimerBomb(3);
}
});
t.start();
System.out.println("Task scheduled.");
}
}