我想用Java制作俄罗斯方块游戏。
我正在使用摆动计时器来放下瓷砖。 但是问题是,当我尝试左右移动瓷砖时, 运动速度受计时器延迟值的限制。瓷砖每秒下降一次,因此,我只能在计时器重置和重新绘制时更改它们的位置。在这种情况下,如何执行独立的第二操作或任何其他可以帮助我的方法,我们将不胜感激。
package gui;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Random;
import javax.swing.ImageIcon;
import javax.swing.JPanel;
import javax.swing.Timer;
enum Shapes {
// T, S1, S2, K,L1, L2,
//above members will be left commented until other tiles are prepared
I;
public static Shapes getRandomShapes() {
Random random = new Random();
return values()[random.nextInt(values().length)];
}
}
public class Engine extends JPanel implements KeyListener, ActionListener {
private static final long serialVersionUID = 1L;
private int[] xPos = new int[800];
private int[] yPos = new int[800];
int moves = 0;
Timer timer;
int delay;
Engine() {
addKeyListener(this);
setFocusable(true);
setFocusTraversalKeysEnabled(false);
delay = 1000;
timer = new Timer(delay, this);
timer.start();
}
private boolean left;
private boolean right;
private void fall() {
yPos[0] += 30;
yPos[1] += 30;
yPos[2] += 30;
yPos[3] += 30;
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(Color.WHITE);
g.drawRect(5, 5, 482, 842);
g.setColor(Color.BLACK);
g.fillRect(7, 7, 478, 838);
if (Shapes.getRandomShapes() == Shapes.I) {
if (moves == 0) {
xPos[0] = 60;
xPos[1] = 90;
xPos[2] = 120;
xPos[3] = 150;
yPos[0] = 6;
yPos[1] = 6;
yPos[2] = 6;
yPos[3] = 6;
moves++;
}
for (int x = 0; x < 4; x++) {
ImageIcon Iimage = new ImageIcon(Engine.class.getClassLoader().getResource("images/I.png"));
Iimage.paintIcon(this, g, xPos[x], yPos[x]);
}
}
g.dispose();
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
timer.start();
fall();
if (left) {
xPos[0] -= 30;
xPos[1] -= 30;
xPos[2] -= 30;
xPos[3] -= 30;
left = false;
}
if (right) {
xPos[0] += 30;
xPos[1] += 30;
xPos[2] += 30;
xPos[3] += 30;
right = false;
}
repaint();
}
@Override
public void keyPressed(KeyEvent e) {
// TODO Auto-generated method stub
if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
right = true;
}
if (e.getKeyCode() == KeyEvent.VK_LEFT) {
left = true;
}
}
}
答案 0 :(得分:1)
将运动逻辑(向下)与计时器解耦,因此计时器可以以较高的速度跳动。
我将捕获“最后一滴”的Instant
并计算每次滴答经过的时间,当等于或大于1秒时,将其滴下
以下示例演示了使用Instant
计算经过的Duration
时间,然后根据需要执行某些操作的基本思想
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.time.Duration;
import java.time.Instant;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.Timer;
public class Drop {
public static void main(String[] args) {
new Drop();
}
public Drop() {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
JFrame frame = new JFrame();
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
private Instant lastDropTime;
private JLabel label;
public TestPane() {
setLayout(new BorderLayout());
label = new JLabel("Drop in ...");
add(label);
Timer timer = new Timer(5, new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
if (lastDropTime == null) {
lastDropTime = Instant.now();
}
// I'm using toMillis so I can display the time
// but you could just use toSeconds
Duration duration = Duration.between(lastDropTime, Instant.now());
long millis = duration.toMillis();
long seconds = duration.toSeconds();
if (seconds >= 1) {
// Drop down here...
lastDropTime = Instant.now();
millis = 1000;
}
label.setText("Drop in " + (1000 - millis));
}
});
timer.start();
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
}
}