Is joystick mapping/trigger fully supported?

Troubleshooting General Help
1

Hi everyone and happy new year.



I would like to manage joystick inputs as mentioned here: https://wiki.jmonkeyengine.org/legacy/doku.php/jme3:advanced:input_handling but there’s 2 problems.


  1. All directions work but south/east. Both south and east work nice separately but south+east at the same time trigger north+west, and only with joystick. Is it a known issue?


  2. I didn’t find the way to use joystick buttons.



    Thanks.
2

1-For combined actions take a look at TestComboMoves.java

2-Make sure you enable the joyinput :

[java]

settings.setUseJoysticks(true);

[/java]

3

You can get a list of joysticks through InputManager.getJoysticks(), these have helper methods to map the buttons/axes to the mappings

4

thanks you guys for replies,



@glaucomardano: I guess I don’t need combo management to go down/right, it’s not a combo but a single direction and it works with keyboard, but not with explanations showed in the links above. And yes I setted setUseJoysticks() to true, otherwise no axis would work.



@Momoko_Fan: thanks to your method I was able to mapping a fire button but something strange happends:

this is the keyboard mapping:

[java]

inputManager.addMapping(“North”, new KeyTrigger(KeyInput.KEY_UP));

inputManager.addMapping(“South”, new KeyTrigger(KeyInput.KEY_DOWN));

inputManager.addMapping(“East”, new KeyTrigger(KeyInput.KEY_RIGHT));

inputManager.addMapping(“West”, new KeyTrigger(KeyInput.KEY_LEFT));

inputManager.addMapping(“Fire1”, new KeyTrigger(KeyInput.KEY_SPACE));

[/java]



and this is the joystick mapping:

[java]

joysticks = inputManager.getJoysticks();

joysticks[0].assignAxis(“North”, “South”, joysticks[0].getYAxisIndex());

joysticks[0].assignAxis(“East”, “West”, joysticks[0].getXAxisIndex());

joysticks[0].assignButton(“Fire1”, 0);

[/java]



With keyboard it’s perfect but with joystick “North” and “South” are inverted. I assume that the up direction of my joystick (gamepad cross) is Y positive right? but it’s inverted. If I switch the positive and the negative mapping it works… even South+East :slight_smile:

5

@accionmutante: The indexes of buttons and joy-axes are not always the same (I think that’s a driver issue). I have 2 gamepads and they have different indexes for most buttons and joy-axes.



So if you’re going to support joysticks/pads you’ll have to write a configuration-menu if you want to get sure that everybody can play your game.

6

Also, since I don’t know how you are mapping those to actual movement… and I don’t know how you decided that the axis is backwards, I will mention that if North, South, East, West relate to the x,z plane… the north is negative and south is positive. This is opposite of east/west where east is positive and west is negative.

7

@ceiphren: that’s what I was afraid of… thanks for the tip, I’ll think about it.



@pspeed: yes I figured it out, in my game north is managed along -z and south along positive z.



Thank you for replies.

8

Hehe the inverted axis is a common problem, that nearly every game has, cause there is no way to do it right. Every Joystick/Gamepad manufacturer uses a secret golden dice to determine wich way the axis is going.

9

And the good pads even let you switch that so you can remedy games of silly developers that don’t at least add “invert y axis” :wink: