Plugin development

[obsidian]

Hi all,

I wanted to create a hacked-up version of Hacktarux' input plugin that supports joysticks/pads. My main problem strangely isn't the joypad stuff, but the C code in the plugin header file :sly:

I first started by compiling Hacktarux' input plugin from source. My gcc didn't like it I have gcc version 2.95.4 20011002 (Debian prerelease).

The union BUTTONS contains an unnamed struct to directly set the buttons and a placeholder called Value. This doesn't work with my gcc - it issues a nice warning

Controller_#1.1.h:77: warning: unnamed struct/union that defines no instances

(which is of course correct) and then won't allow the variables inside the struct to be accessed. So I had a look around the net and saw that this violates the ANSI/ISO C standard anyway. Under http://www.gdconf.com/archives/proce...001/kreimeier/
they even call it an evil MS-VC practice

So, what shall we do? Isn't it better to stick with conformance and change this into a double word which is manipulated bitwise through logical AND and OR? This would ensure binary compability with the VC approach.

I didn't post this into the plugins forum because I'm not sure if I'm right or wrong.

Cheers,

Obsidian

PS: Hacktarux, keep it up! 0.04 works great.

[Hacktarux]

unnamed struct are handled correctly by gcc 2.96 and gcc 3.0. Now that you say that i remember that i had problems with that on gcc 2.95.

You can make it like you said it will work. You have to keep binary compatibility but of course feel free to modify the specs for your compiler.

[obsidian]

Hacktarux,

thanks for the swift answer! I tried it with gcc 3.0 and it compiled out of the box

I hacked at the plugin and I can press Start in Mario64 with the joypad. The rest of the buttons has to wait till there's a graphical button configuration utility. Does anybody have a picture of a N64 pad, preferably seen straight from above? I'd include it in the config box...

G'night

Obsidian

[Martin]

Sweet to hear, obsidian!
I'm glad to see that there's interest for Linux emulation as well.
(going to install RedHat 7.3 whenever I've got time. )

[obsidian]

Hi all,

here's a preview of the ugly config dialog. Could anybody please comment on the C buttons. Are they in the right order? Or rathermore, how are they labeled on the N64?

Cheers,

Obsidian

[mesman00]

uhh??? if u meant to attach an image, its not here!

[obsidian]

Thanks for the hint...

Here it is, somehow I can't upload attachments to posts



Cheers,

Obsidian

[The Khan Artist]

--^--
<--->
--v--


It's just arrows on the N64 pad. You could do like I did, or do something like

--CU--
CL--CR
--CD--



I guess it's up to you since you're designing it.

BTW, the hyphens are just there to make it line up.

[obsidian]

Hi folks,

I finished the first version. It emulates the analog minijoystick and the buttons. Tomorrow I'll buy a joypad that has an analog joystick and digital directional pad, so I can implement the second axis. Please read the README file.

You can download it here: http://www.blutsuppe.de/n64pad-0.1.tar.gz

The axes are hardcoded for now. If you have more than one, you should try both. It is hardcoded to acces /dev/js0 at the moment, too. If your joystick has another device, either change the order of module loading, or look in the source for /dev/js0

Cheers,

Obsidian

PS: Khan, thanks for the hint. It'll change in the next release

[Hacktarux]

Thanks for your help Obsidian !

I can't test it because i don't have a joystick here but it seems nice !