所以这里是考虑了提示之后的代码。 地图被重新粉刷,keylistener已经改变,但似乎仍有问题。
问题是,左上角的小方块不会移动,这是理想的结果。
package schoolgamev2;
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Spel {
public static void main(String[] args) {
Speelveld map = new Speelveld();
map.Speelveld();
map.GenerateMap();
}
}
class Speelveld extends JPanel {
final int rijen = 16;
final int kolommen = 16;
Speler speler = new Speler();
Loopgebied loopgebied = new Loopgebied();
Blokken blok = new Blokken();
int[][] coordinaten = new int[rijen][kolommen];
public void Speelveld() {
JFrame frame = new JFrame();
frame.setSize(500, 500);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(this);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
setFocusable(true);
addKeyListener(new KeyListener(this));
}
//genereer map
public void GenerateMap() {
Random random = new Random();
int x;
int y;
for (y = 0; y < rijen; y++) { //scan langs y
for (x = 0; x < kolommen; x++) { //scan langs x
//selecteert type blok voor coordinaten x y
coordinaten[x][y] = random.nextInt(4);
//debugprint
}
//debugprint
}
coordinaten[0][0] = 4; //speler begint altijd links boven
coordinaten[15][15] = 5; //finish is altijd rechts onder
}
public int[][] getCoordinaten() {
return coordinaten;
}
public Speler getSpeler2() {
return speler;
}
public int getSpelerX() {
return speler.getX();
}
public int getSpelerY() {
return speler.getY();
}
public void setSpelerX(int x) {
speler.setX(x);
}
public void setSpelerY(int y) {
speler.setY(y);
}
//@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
int x;
int y;
for (y = 0; y < rijen; y++) { //scan langs y
System.out.println("");
for (x = 0; x < kolommen; x++) { //scan langs x
blok.setX(x);
blok.setY(y);
blok.setType(coordinaten[x][y]);
System.out.print(coordinaten[x][y] + " ");
switch (blok.getType()) {
case 0:
loopgebied.teken(g);
break;
case 4:
speler.teken(g);
/*case 5:
eindveld.teken(g);
break;*/
default:
break;
}
}
}
}
}
class Speler extends Blokken {
Blokken blok = new Blokken();
public void teken(Graphics g) {
g.drawRect(blok.getX(), blok.getY(), 10, 10);
}
}
class Loopgebied extends Blokken {
Blokken blok = new Blokken();
public void teken(Graphics g) {
g.drawRect(blok.getX() * size, blok.getY() * size, size, size);
}
}
class Blokken {
private static int x;
private static int y;
private static int type;
public int size = 16;
//setters voor x y en type
public void setX(int xIn) {
x = xIn;
}
public void setY(int yIn) {
y = yIn;
}
public void setType(int typeIn) {
type = typeIn;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
public int getType() {
return type;
}
}
class KeyListener extends KeyAdapter {
private static final int SCALE = 3;
private Speelveld speelveld;
public KeyListener(Speelveld speelveld) {
this.speelveld = speelveld;
}
@Override
public void keyPressed(KeyEvent e) {
int key = e.getKeyCode();
int deltaX = 0;
int deltaY = 0;
if (key == KeyEvent.VK_LEFT) {
deltaX = -1 * SCALE;
deltaY = 0;
} else if (key == KeyEvent.VK_UP) {
deltaX = 0;
deltaY = -1 * SCALE;
} else if (key == KeyEvent.VK_RIGHT) {
deltaX = 1 * SCALE;
deltaY = 0;
} else if (key == KeyEvent.VK_DOWN) {
deltaX = 0;
deltaY = 1 * SCALE;
} else {
return;
}
int x = speelveld.getSpelerX() + deltaX;
int y = speelveld.getSpelerY() + deltaY;
speelveld.setSpelerX(x);
speelveld.setSpelerY(y);
speelveld.repaint();
}
}
答案 0 :(得分:0)
正如评论中所提到的,你得到了你的播放器,Speler类,它扩展了JPanel并连线使用KeyListener,但请注意它没有被用作JPanel,因此KeyListener无效,因为它们仅在已添加到具有焦点的可见组件时才起作用。
建议:
public void verf(Graphics2D g2)
?或者绘制每个逻辑组件? {paint}中的public void teken(Graphics2D g2)
?)。例如,下面的简单[MCVE]不使用Swing Timer或更改速度,而是使用KeyListener仅使用一个绘图JPanel和KeyListener来更改Speler2对象的位置。如果我让它更强大和更大,我会使用Swing Timer,使用Key Bindings,并使用键绑定来改变速度。
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.image.BufferedImage;
import javax.swing.*;
public class Spel2 {
private static final int VELD_WIDTH = 500;
private static void createAndShowGui() {
Speelveld2 speelveld2 = new Speelveld2(VELD_WIDTH, VELD_WIDTH);
JFrame frame = new JFrame("Spel2");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(speelveld2);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
speelveld2.requestFocusInWindow();
}
public static void main(String[] args) {
SwingUtilities.invokeLater(() -> createAndShowGui());
}
}
class MyKeyListener extends KeyAdapter {
private static final int SCALE = 3;
private Speelveld2 speelveld2;
public MyKeyListener(Speelveld2 speelveld2) {
this.speelveld2 = speelveld2;
}
@Override
public void keyPressed(KeyEvent e) {
int key = e.getKeyCode();
int deltaX = 0;
int deltaY = 0;
if (key == KeyEvent.VK_LEFT) {
deltaX = -1 * SCALE;
deltaY = 0;
} else if (key == KeyEvent.VK_UP) {
deltaX = 0;
deltaY = -1 * SCALE;
} else if (key == KeyEvent.VK_RIGHT) {
deltaX = 1 * SCALE;
deltaY = 0;
} else if (key == KeyEvent.VK_DOWN) {
deltaX = 0;
deltaY = 1 * SCALE;
} else {
return;
}
int x = speelveld2.getSpelerX() + deltaX;
int y = speelveld2.getSpelerY() + deltaY;
speelveld2.setSpelerX(x);
speelveld2.setSpelerY(y);
speelveld2.repaint();
}
}
@SuppressWarnings("serial")
class Speelveld2 extends JPanel {
private int prefW;
private int prefH;
private Speler2 speler2 = new Speler2();
public Speelveld2(int prefW, int prefH) {
this.prefW = prefW;
this.prefH = prefH;
setFocusable(true);
addKeyListener(new MyKeyListener(this));
}
public Speler2 getSpeler2() {
return speler2;
}
public int getSpelerX() {
return speler2.getX();
}
public int getSpelerY() {
return speler2.getY();
}
public void setSpelerX(int x) {
speler2.setX(x);
}
public void setSpelerY(int y) {
speler2.setY(y);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
speler2.teken(g2);
}
@Override
public Dimension getPreferredSize() {
if (isPreferredSizeSet()) {
return super.getPreferredSize();
}
return new Dimension(prefW, prefH);
}
}
class Speler2 extends Blokken2 {
private static final int RECT_W = 10;
public Speler2() {
super(BlokkenType.SPELER);
}
@Override
public void teken(Graphics2D g2) {
int x = getX();
int y = getY();
g2.drawRect(x, y, RECT_W, RECT_W);
}
}
class Blokken2 {
private int x;
private int y;
private int velx = 0;
private int vely = 0;
private BlokkenType type;
private BufferedImage img;
public Blokken2(BlokkenType type) {
this.type = type;
}
public int getX() {
return x;
}
public void setX(int x) {
this.x = x;
}
public int getY() {
return y;
}
public void setY(int y) {
this.y = y;
}
public int getVelx() {
return velx;
}
public void setVelx(int velx) {
this.velx = velx;
}
public int getVely() {
return vely;
}
public void setVely(int vely) {
this.vely = vely;
}
public BlokkenType getType() {
return type;
}
public void setType(BlokkenType type) {
this.type = type;
}
public void setImg(BufferedImage img) {
this.img = img;
}
public BufferedImage getImg() {
return img;
}
public void teken(Graphics2D g2) {
if (img != null) {
g2.drawImage(img, x, y, null);
}
}
}
enum BlokkenType {
LOOPGEBIED, BARRICADE, MUUR, SLEUTEN, SPELER, EINDVELD
}
编辑:您的最新代码在此处出错:
class Speler extends Blokken {
Blokken blok = new Blokken();
public void teken(Graphics g) {
g.drawRect(blok.getX(), blok.getY(), 10, 10);
}
}
关于你的编辑:
现在,当您创建Speler实例时,您可以创建 TWO Blokken实例,其中是 Speler实例,因为它扩展了Blokken而另一个包含通过 Speler实例,因为它还有一个Blokken字段。
您更新第一个的x / y状态,但是您使用第二个进行绘制,这就是为什么没有显示动作的原因。解决方案很明显:使用一个或另一个但不是两个。要么让Speler扩展Blokken,要么让它包含一个Blokken实例,但不要同时执行这两个操作。