Check if Neko Project II is already running

[frank-deng]

Is it appropriate to add a feature of checking if Neko Project II is already running, so as to evade potential corruptions on disk images and floppy images?

[AZO234]

I think few of methods.

1. Selecting config file by command line.
2. Lock reading to opened image files.

There may be some players enjoying NP2 by multiple driving.
Since quality can not be perfect, we recommend to backup images on user.
If it can be implemented, I will add it.

Thanks.

[AZO234]

I implemented config file select by command line to SDL2 ver.
X11 ver already be implemented this.
libretro ver, RetroArch can drive multi window, but window activate can be only one.

Regards.

[frank-deng]

Also, is it appropriate to identify NP2 sessions by configuration files, so that only one instance of NP2 is allowed for each configuration file?

[AZO234]

It is natural that instances control files,
I think it is unnatural for a file to identify an instance.
An instance has a shorter lifecycle than a file.
(Stoic integrity is necessary?)