Comment faire bouger une image tout en écoutant une pression sur une touche en Java
En Java, vous pouvez utiliser une combinaison de Swing Timer et Key Liaisons pour faire bouger une image tout en écoutant une pression sur une touche. Voici comment :
Exemple de code :
Voici un exemple de code qui montre comment utiliser un Swing Timer et des raccourcis clavier pour faire bouger une image tout en écoutant une pression sur une touche :
import java.awt.*; import java.awt.event.*; import javax.swing.*; public class ImageMoveOnKeyPress extends JPanel implements ActionListener { private Image image; // The image to be moved private int x, y; // The current position of the image private Timer timer; // The Swing Timer to update the image position private KeyBindings keyBindings; // The Key Bindings to detect keypresses public ImageMoveOnKeyPress() { // Load the image image = Toolkit.getDefaultToolkit().getImage("image_path"); // Set the initial position of the image x = 50; y = 50; // Create a Swing Timer to update the image position timer = new Timer(10, this); // 10 milliseconds delay timer.start(); // Create Key Bindings to detect keypresses keyBindings = new KeyBindings(); getInputMap().put(KeyEvent.VK_LEFT, "left"); getInputMap().put(KeyEvent.VK_RIGHT, "right"); getInputMap().put(KeyEvent.VK_UP, "up"); getInputMap().put(KeyEvent.VK_DOWN, "down"); getActionMap().put("left", keyBindings.new MoveLeftAction()); getActionMap().put("right", keyBindings.new MoveRightAction()); getActionMap().put("up", keyBindings.new MoveUpAction()); getActionMap().put("down", keyBindings.new MoveDownAction()); } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); g.drawImage(image, x, y, null); } @Override public void actionPerformed(ActionEvent e) { // Update the image position based on keypress if (keyBindings.isLeftPressed()) { x -= 1; } else if (keyBindings.isRightPressed()) { x += 1; } else if (keyBindings.isUpPressed()) { y -= 1; } else if (keyBindings.isDownPressed()) { y += 1; } // Repaint the panel to display the moved image repaint(); } private class KeyBindings { private boolean leftPressed, rightPressed, upPressed, downPressed; public boolean isLeftPressed() { return leftPressed; } public void setLeftPressed(boolean leftPressed) { this.leftPressed = leftPressed; } public boolean isRightPressed() { return rightPressed; } public void setRightPressed(boolean rightPressed) { this.rightPressed = rightPressed; } public boolean isUpPressed() { return upPressed; } public void setUpPressed(boolean upPressed) { this.upPressed = upPressed; } public boolean isDownPressed() { return downPressed; } public void setDownPressed(boolean downPressed) { this.downPressed = downPressed; } private class MoveLeftAction extends AbstractAction { @Override public void actionPerformed(ActionEvent e) { leftPressed = true; } } private class MoveRightAction extends AbstractAction { @Override public void actionPerformed(ActionEvent e) { rightPressed = true; } } private class MoveUpAction extends AbstractAction { @Override public void actionPerformed(ActionEvent e) { upPressed = true; } } private class MoveDownAction extends AbstractAction { @Override public void actionPerformed(ActionEvent e) { downPressed = true; } } } public static void main(String[] args) { JFrame frame = new JFrame();
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