我正在开发一款游戏,而且前段时间我在java中进行了编程,所以我忘记了一些东西,比如如何创建一个KeyListener,以便读取java文档,并提出了这个问题但是当我按下其中一个键时,球员不会移动。KeyListener不工作
以下是我的代码。
这是Player.java
类(Player.java
延伸Entity.java
):
(速度= 1)
public void keyPressed(KeyEvent e){
if(e.getKeyChar() == 'W' | e.getKeyChar() == 'w' | e.getKeyCode() == KeyEvent.VK_UP){
yPos = -speed;
}
if(e.getKeyChar() == 'S' | e.getKeyChar() == 's' | e.getKeyCode() == KeyEvent.VK_DOWN){
yPos = speed;
}
if(e.getKeyChar() == 'A' | e.getKeyChar() == 'a' | e.getKeyCode() == KeyEvent.VK_LEFT){
xPos = -speed;
}
if(e.getKeyChar() == 'D' | e.getKeyChar() == 'd' | e.getKeyCode() == KeyEvent.VK_RIGHT){
xPos = speed;
}
}
public void keyReleased(KeyEvent e){
if(e.getKeyChar() == 'W' | e.getKeyChar() == 'w' | e.getKeyCode() == KeyEvent.VK_UP){
yPos = 0;
}
if(e.getKeyChar() == 'S' | e.getKeyChar() == 's' | e.getKeyCode() == KeyEvent.VK_DOWN){
yPos = 0;
}
if(e.getKeyChar() == 'A' | e.getKeyChar() == 'a' | e.getKeyCode() == KeyEvent.VK_RIGHT){
xPos = 0;
}
if(e.getKeyChar() == 'D' | e.getKeyChar() == 'd' | e.getKeyCode() == KeyEvent.VK_LEFT){
xPos = 0;
}
}
这是Entity.java
类:
public void move(){
x += xPos;
y += yPos;
}
这是在Entities.java
等级:
KeyAdapter playerAdapter = new KeyAdapter(){
@Override
public void keyPressed(KeyEvent e){
player.keyPressed(e);
}
@Override
public void keyReleased(KeyEvent e){
player.keyReleased(e);
}
};
public void move(){
//Player
player.move();
}
,这是在Level.java
类(Level.java
扩展JComponent的):
在级别()方法:addKeyListener(entities.playerAdapter);
在的paintComponent(图形克)方法:
if(entities.player.getState())
g2d.drawImage(entities.player.getImage(), entities.player.getX(), entities.player.getY(), this);
和int run()方法:entities.move();
那么,我在做什么错了?
什么是'getState()'? –
@ PM77-1检查玩家是否存活 –
它在测试中返回“true”吗? –