Java 在我的代码中实现mouseClicked
这是我第一次用Java编写游戏。我正在制作一个RPG游戏。我已经成功地使用KeyListener功能用箭头键移动了我的角色。但是，当鼠标在窗口中单击时，我一直试图将角色移向鼠标。我发现可以使用mouseClicked函数来实现，但我似乎无法在代码中实现它。我一直在试图理解正确的布局方法，但互联网上所有不同的代码让我越来越困惑。我正在上传我的播放器类和mouseAdapter上的小代码。如有任何帮助，我们将不胜感激Java 在我的代码中实现mouseClicked,java,mouseclick-event,game-development,Java,Mouseclick Event,Game Development,这是我第一次用Java编写游戏。我正在制作一个RPG游戏。我已经成功地使用KeyListener功能用箭头键移动了我的角色。但是，当鼠标在窗口中单击时，我一直试图将角色移向鼠标。我发现可以使用mouseClicked函数来实现，但我似乎无法在代码中实现它。我一直在试图理解正确的布局方法，但互联网上所有不同的代码让我越来越困惑。我正在上传我的播放器类和mouseAdapter上的小代码。如有任何帮助，我们将不胜感激 import java.awt.Graphics; import java.awt
import java.awt.Graphics;
import java.awt.event.KeyListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseAdapter;
public class Player implements KeyListener {
private int x,y;
private SpriteSheet ss;
private boolean up = false, down = false, left= false, right = false;
public boolean mouseActive = false; // mouse
public Point mouse; // mouse
private final int SPEED = 3;
public Player( int x, int y, SpriteSheet ss) {
this.x = x;
this.y = y;
this.ss = ss;
}
public void tick() {
if(up) {
y-=SPEED;
}
if (down) {
y+=SPEED;
}
if (left){
x-=SPEED;
}
if (right) {
x+=SPEED;
}
}
public void render( Graphics g) {
g.drawImage(ss.crop(0,0,16,16), x, y, 16* Game.SCALE, 16* Game.SCALE, null);
}
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_UP) {
up = true;
}
if (e.getKeyCode() == KeyEvent.VK_DOWN) {
down = true;
}
if (e.getKeyCode() == KeyEvent.VK_LEFT) {
left = true;
}
if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
right = true;
}
if (e.getKeyCode() == KeyEvent.VK_M) { // mouse
mouseActive = true;
}
}
public void keyReleased(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_UP) {
up = false;
}
if (e.getKeyCode() == KeyEvent.VK_DOWN) {
down = false;
}
if (e.getKeyCode() == KeyEvent.VK_LEFT) {
left = false;
}
if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
right = false;
}
if (e.getKeyCode() == KeyEvent.VK_M) {
mouseActive = false;
}
}
// this is where I have been trying to add mouseClicked function to my code
addMouseListener( new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
mouse = new Point(e.getX(), e.getY() - 25);
if(e.getButton() == MouseEvent.BUTTON1 && !mouseActive) {
x = mouse.x;
y = mouse.y;
}
}
});
}
位置：职业球员这是概念证明。在这种情况下，角色将始终试图朝着给定的点移动 键盘控制元件设计用于在按下目标时将目标移动到距离当前玩家位置规定的距离 鼠标控制元素简单地将目标移动到鼠标单击的位置 主引擎只是试图将角色驱动到该点 在本例中，键盘操作覆盖鼠标操作
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.swing.AbstractAction;
import javax.swing.ActionMap;
import javax.swing.InputMap;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.KeyStroke;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class MoveMe {
public static void main(String[] args) {
new MoveMe();
}
public MoveMe() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new Surface());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public enum KeyControl {
UP, DOWN, LEFT, RIGHT
}
public class Surface extends JPanel {
private Character character;
private Point target;
private int xDelta = 2;
private int yDelta = 2;
private Set<KeyControl> keyControls;
public Surface() {
keyControls = new HashSet<>(4);
character = new Character(new Rectangle(95, 95, 10, 10));
Timer timer = new Timer(40, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
processKeyCommands();
if (target != null) {
Rectangle bounds = character.getBounds();
Point cp = new Point(bounds.getLocation());
cp.x += bounds.width / 2;
cp.y += bounds.height / 2;
if (!cp.equals(target)) {
if (cp.x != target.x) {
if (target.x < cp.x) {
cp.x -= xDelta;
if (cp.x < target.x) {
cp.x = target.x;
}
} else {
cp.x += xDelta;
if (cp.x > target.x) {
cp.x = target.x;
}
}
}
if (target.y != cp.y) {
if (target.y < cp.y) {
cp.y -= yDelta;
if (cp.y < target.y) {
cp.y = target.y;
}
} else {
cp.y += yDelta;
if (cp.y > target.y) {
cp.y = target.y;
}
}
}
bounds.x = cp.x - bounds.width / 2;
bounds.y = cp.y - bounds.height / 2;
if (bounds.x < 0) {
bounds.x = 0;
} else if (bounds.x + bounds.width > getWidth()) {
bounds.x = getWidth() - bounds.width;
}
if (bounds.y < 0) {
bounds.y = 0;
} else if (bounds.y + bounds.height > getHeight()) {
bounds.y = getHeight() - bounds.height;
}
} else {
target = null;
}
}
repaint();
}
});
timer.start();
addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
target = e.getPoint();
}
});
InputMap im = getInputMap(WHEN_IN_FOCUSED_WINDOW);
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0, false), "pressUp");
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0, false), "pressDown");
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, 0, false), "pressLeft");
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT, 0, false), "pressRight");
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_UP, 0, true), "releaseUp");
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0, true), "releaseDown");
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, 0, true), "releaseLeft");
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT, 0, true), "releaseRight");
ActionMap am = getActionMap();
am.put("pressUp", new KeyStateAction(keyControls, KeyControl.UP, true));
am.put("pressDown", new KeyStateAction(keyControls, KeyControl.DOWN, true));
am.put("pressLeft", new KeyStateAction(keyControls, KeyControl.LEFT, true));
am.put("pressRight", new KeyStateAction(keyControls, KeyControl.RIGHT, true));
am.put("releaseUp", new KeyStateAction(keyControls, KeyControl.UP, false));
am.put("releaseDown", new KeyStateAction(keyControls, KeyControl.DOWN, false));
am.put("releaseLeft", new KeyStateAction(keyControls, KeyControl.LEFT, false));
am.put("releaseRight", new KeyStateAction(keyControls, KeyControl.RIGHT, false));
}
protected Point createTargetBasedOnCharacter() {
target = new Point();
Rectangle bounds = character.getBounds();
target.x = bounds.x + bounds.width / 2;
target.y = bounds.y + bounds.height / 2;
return target;
}
protected void processKeyCommands() {
if (keyControls.contains(KeyControl.UP)) {
Point target = createTargetBasedOnCharacter();
target.y -= xDelta;
} else if (keyControls.contains(KeyControl.DOWN)) {
Point target = createTargetBasedOnCharacter();
target.y += xDelta;
}
if (keyControls.contains(KeyControl.LEFT)) {
Point target = createTargetBasedOnCharacter();
target.x -= xDelta;
} else if (keyControls.contains(KeyControl.RIGHT)) {
Point target = createTargetBasedOnCharacter();
target.x += xDelta;
}
}
@Override
public Dimension getPreferredSize() {
return new Dimension(200, 200);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g.create();
if (target != null) {
g2d.setColor(Color.RED);
g2d.fillOval(target.x - 5, target.y - 5, 10, 10);
}
character.render(g2d);
g2d.dispose();
}
}
public class Character {
private Rectangle bounds;
public Character(Rectangle bounds) {
this.bounds = bounds;
}
public Rectangle getBounds() {
return bounds;
}
public void render(Graphics2D g) {
g.setColor(Color.BLUE);
g.fill(getBounds());
}
}
public class KeyStateAction extends AbstractAction {
private final Set<KeyControl> keyControls;
private final KeyControl keyControl;
private final boolean pressed;
private KeyStateAction(Set<KeyControl> keyControls, KeyControl keyControl, boolean pressed) {
this.keyControls = keyControls;
this.keyControl = keyControl;
this.pressed = pressed;
}
@Override
public void actionPerformed(ActionEvent e) {
if (pressed) {
keyControls.add(keyControl);
} else {
keyControls.remove(keyControl);
}
}
}
}
我还将实体角色与控件解耦。这是，键盘和鼠标控制和管理的表面，因为，IMHO，球员实体应该没有概念。这将集中控制，意味着可以通过您想要添加的任何输入来移动角色…它甚至会移动吗？如果在x=mouse.x部件之前将某些内容打印到控制台，会发生什么情况？你在标准输出上看到了吗？我的程序运行得很好，在我添加了关于单击功能的代码之前，角色用箭头键移动。带有mouseClicked部分的代码未编译。它给出了该部分几乎每个单词的“找不到”符号错误。可能是您需要更改方法。将角色移向x/y位置，而不是根据关键点的状态移动角色。因此，击键会将角色的位置设置为与角色当前位置的偏移量，鼠标将是绝对位置…@MadProgrammer我想这就是OP想要实现的，用户，你能发布你得到的编译错误吗？这很可能是大括号的问题。您的Player类实现了KeyListener，并使用addKeyListener添加到某个对象中。让它实现MouseListener，并使用addMouseListener添加它，方法相同。