How to implement a joystick?

Engines, Libraries and Tools Java 3D
#1

Hi
I wanna programm a helicopter-simulator controlled by joystick. For the joystick, I use te JXInput package (www.hardcode.de) which returns me a value between -1 and 1 for each axis, depending on where the stick is.

Now, I’m not sure what to use: Behavior or Listener. And how can I implement translations/rotations using the Alpha/Interpolator-Classes together with this -1 to 1 -value ?

Really thanks for help !
Flavio

#2

Excellent choice! ;D

What I do is having a Behavior that forms kind of a gameloop with a WakeUpOnElapsedFrames.

During the processStimulus I update the controller and use the values to control the motion. This in turn directly influences a TransformGroup where the helicopter is.
Of course this is encapsulated in dozens of classes, so I cannot post them here. Maybe the classes you need are

  • HeliController (update(), getPitch(), getTailRotor(), getLeftRight(), getForwardBackward())

  • HeliMotion (setHeliController(), update())

No Alpha/Interpolator stuff.

I have a PlaneController in place that additionally lets you use keyboard or mouse, depending on whats used latest. If you like to see it…

#3

Hi,
first of all, thanks for responding. I’m now a little bit further … but still have problems:

I get the value from JXInput (-1 to 1) which I wanna use for the translation/rotation.
How can I transform this value in a value which is compatible with the Transform3D-class (a Matrix4d object), which I us for doing the translation/rotation?

Would it be possible to take a look in your code, especially the Behavior-Class and the Class where you handle the value from JXInput?

Thanks
Flavio