Java keypress detection help
I created a keysystem which records which keys have been pressed which I use at another point in my program. The problem is, I can't get it to tell if the key has been pressed after already having been released. It worked for me in c# xna game studio, but in Java it detects like 100 presses before stopping detection because it is already down.
Here's my code:
Key.java
Code:
package Controls;
public class Key
{
private int keycode;
protected boolean isdown;
protected boolean isdownafterrelease;
protected boolean released;
protected long previoustime;
protected long timebetween;
public enum KeyEvent { Press, Released };
public Key(int code, long timeBetween)
{
keycode = code;
isdown = false;
isdownafterrelease = false;
released = true;
timebetween = timeBetween;
previoustime = 0;
}
public Key(int code)
{
this(code, 0);
}
public int getKeyCode()
{ return keycode; }
public boolean isDown()
{ return isdown; }
public boolean isDownAfterRelease()
{ return isdownafterrelease; }
public void Update(KeyEvent e)
{
if (e == KeyEvent.Press)
{
if (System.currentTimeMillis() - previoustime > timebetween)
{
if (released)
isdownafterrelease = true;
else
isdownafterrelease = false;
isdown = true;
released = false;
previoustime = System.currentTimeMillis();
}
}
else
{
isdown = false;
isdownafterrelease = false;
released = true;
}
}
}
KeySystem.java
Code:
package Controls;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
public class KeySystem implements KeyListener
{
private Key[] keys;
public KeySystem(long timeBetween)
{
keys = new Key[5];
keys[0] = new Key(KeyEvent.VK_W);
keys[1] = new Key(KeyEvent.VK_A);
keys[2] = new Key(KeyEvent.VK_S);
keys[3] = new Key(KeyEvent.VK_D);
keys[4] = new Key(KeyEvent.VK_SPACE);
}
public KeySystem()
{
this(0);
}
private Key getKey(int code)
{
for (Key k : keys)
if (k.getKeyCode() == code)
return k;
return null;
}
public void keyPressed(KeyEvent e)
{
Key temp = getKey(e.getKeyCode());
if (temp != null)
temp.Update(Key.KeyEvent.Press);
}
public void keyTyped(KeyEvent e)
{
}
public void keyReleased(KeyEvent e)
{
Key temp = getKey(e.getKeyCode());
if (temp != null)
temp.Update(Key.KeyEvent.Released);
}
public ArrayList<Key> pressedKeys()
{
ArrayList<Key> temp = new ArrayList<Key>();
for (Key k : keys)
if (k.isDown())
temp.add(k);
return temp;
}
public static boolean isKeyDown(int code)
{
return IControllableObject.system.getKey(code).isDown();
}
public static boolean isKeyDownAfterRelease(int code)
{
return IControllableObject.system.getKey(code).isDownAfterRelease();
}
}
