Hello.
First of all i would like to thank you for providing the code for keyboard
event handling.
Your Code helped me alot.
I am only facing one problem, as mentioned by urself, while pasting that
code on java3d mailing list that
if you were to hold down the left key, there would be a split second
delay after the initial incremental move before it continuously moves left
this really effects the performance of my game.
I would highly appreciate if u (or someone else) can provde me the solution
to this problem
Thanking you in Anticipation
Fahad
I have pasted the code your code below for reference.
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.media.j3d.*;
import javax.vecmath.*;
public class KeyboardBehavior extends Behavior {
WakeupCriterion[] keyboardEvents;
WakeupOr keyboardCriterion;
TransformGroup transformGroup; // the transform group that the
viewplatform is attached to
Transform3D move;
float change;
public KeyboardBehavior(TransformGroup transformGroup)
{
super();
this.transformGroup = transformGroup;
move = new Transform3D();
change=0.5f;
}
public void initialize()
{
keyboardEvents = new WakeupCriterion[2];
// Only wake up when a key is pressed or released
keyboardEvents[0] = new
WakeupOnAWTEvent(KeyEvent.KEY_PRESSED);
keyboardEvents[1] = new
WakeupOnAWTEvent(KeyEvent.KEY_RELEASED);
keyboardCriterion = new WakeupOr(keyboardEvents);
wakeupOn (keyboardCriterion);
}
public void processStimulus (Enumeration criteria)
{
WakeupCriterion wakeup;
AWTEvent[] event;
KeyEvent evt;
while (criteria.hasMoreElements()) {
wakeup = (WakeupCriterion) criteria.nextElement();
if (wakeup instanceof WakeupOnAWTEvent) {
event =
((WakeupOnAWTEvent)wakeup).getAWTEvent();
for (int i=0; i<event.length; i++) {
evt = (KeyEvent) event[i];
if
(evt.getID()==KeyEvent.KEY_PRESSED) {
KEY_PRESSED=true;
switch(evt.getKeyCode()) {
case
KeyEvent.VK_NUMPAD4: // move left
move.set(new Vector3f(-1*change, 0, 0));
transformGroup.setTransform(move);
break;
case
KeyEvent.VK_NUMPAD6: // move right
move.set(new Vector3f(change, 0, 0));
transformGroup.setTransform(move);
break;
} // end switch
} // end if keypressed
} // end for loop that processes all events
} //end if wakeup
} // end while
wakeupOn(keyboardCriterion); // VERY IMPORTANT TO CALL
THIS AGAIN AT THE END OF THE FUNCTION
} // end process stimulus
} // end class
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