Java Game Development(28) - Final Keyboard Input

import java.awt.*;

import java.awt.event.*;

public class KeyTest extends Core implements KeyListener { → 是從鍵盤的監聽器

public static void main(String[] args) {

new KeyTest().run();

}

private String mess = "";

//init also call init from super class

public void init() {

super.init(); → 調用init()(core java)

Window w = s.getFullScreenWindow();

w.setFocusTraversalKeysEnabled(false); → 鍵盤設置普通按鈕

w.addKeyListener(this); → 等待鍵盤輸入

mess = "Press escape to exit";

}

//按下的鍵

public void keyPressed(KeyEvent e) { → 當有人按鍵調用此方法

int keyCode = e.getKeyCode();

if (keyCode == KeyEvent.VK_ESCAPE) { → 當按下ESC

stop(); → 調用stop()方法(in Core.java)

} else {

mess = "Pressed: " + KeyEvent.getKeyText(keyCode); → 按哪個鍵

e.consume(); → 等待一些鍵入組合(例子:ALT + F2)

}

}

//釋放鍵

public void keyReleased(KeyEvent e) {

int keyCode = e.getKeyCode();

mess = "Released: " + KeyEvent.getKeyText(keyCode);

e.consume();

}

//當按鍵

public void keyTyped(KeyEvent e) {

e.consume();

}

//繪製

public synchronized void draw(Graphics2D g) {

Window w = s.getFullScreenWindow();

g.setColor(w.getBackground());

g.fillRect(0, 0, s.getWidth(), s.getHeight());

g.setColor(w.getForeground());

g.drawString(mess, 30, 30);

}

}

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