Can't see new system in EmulationStation

hiulit

@mitu @BuZz Sorry to "open" this thread again, but could you tell me if addEmulator works inside a loop? Something like:

    for i in "${!bin_files[@]}"; do
        addEmulator ...
    done

Because it's only adding one emulator right now.

Or let me rephrase it: How can I add more than one emulator in emulators.cfg?

Thanks!

mitu

@hiulit said in Can't see new system in EmulationStation:

Or let me rephrase it: How can I add more than one emulator in emulators.cfg?

Yes, it should work. For instance

adding multiple entries for the same system (i.e. the same emulators.cfg) - xroar
adding multiple entries in multiple systems (i.e. different emulators.cfg) - lr-fbalpha.

hiulit

@mitu Ok, it works fine when adding multiple emulators "one by one", like in the examples you showed me, but not if try to add them inside a loop. And I think it's because the emulators.cfg file gets overwritten every time addEmulator is called, right?

Anyway, I did it like the examples you showed me and it works. Thanks :)

mitu

@hiulit said in Can't see new system in EmulationStation:

And I think it's because the emulators.cfg file gets overwritten every time addEmulator is called, right?

Not really, the same thing happens also in the xroar installation script and it's not a problem.

hiulit

@mitu But in the xroar there's no loop to add the emulators.

When I try to use something like:

 for i in "${!bin_files[@]}"; do
        addEmulator ...
    done

Only the last emulator gets written in emulators.cfg

mitu

@hiulit Without looking at the full code fragment, it's hard to say if it's a bug in your code or something in addEmulator.

hiulit

@mitu Well, I've already used the "one-by-one" method, but here's what I had

function configure_godot-engine() {
    mkRomDir "godot-engine"

    local bin_files

    if isPlatform "x86"; then
        bin_files=("godot-3.0-x11-x86-32.bin" "godot-3.1-x11-x86-32.bin")
    elif isPlatform "aarch64"; then
        bin_files=("frt_094_310_arm64.bin")
    elif isPlatform "rpi1"; then
        bin_files=("frt_094_310_pi1.bin")
    elif isPlatform "rpi2" || isPlatform "rpi3"; then
        bin_files=("frt_094_310_pi2.bin")
    fi

    for i in "${!bin_files[@]}"; do
        addEmulator 0 "$md_id-$i" "godot-engine" "$md_inst/${bin_files[$i]} --main-pack %ROM%"
    done

    addSystem "godot-engine" "Godot" ".pck .zip"
}

Efriim

Indirect expansion will not work in a loop, is possibly how to get only one emulator.

Try using single quotation for the variables, so that it knows the expansion is protected and invariable.

and/or without the indirect reference since it will be read like

for i in godot-3.0-x11-x86-32.bin godot-3.1-x11-x86-32.bin do
add emulator

BuZz

Ignore my previous msg. Misread (and deleted it). Run with sudo __debug=1 ./retropie_packages etc and check what's going on. Or add some debugging manually.

mitu

@hiulit The code you posted seems ok. I've scoured through the existing modules and I've found something similar to your case - Oricutrun. It adds a few emulators for the same system (i.e same emulators.cfg). Incidentally, the code has a bug (i.e. always ads a default emulator instead of using $default).
I've run the install script and the .cfg file is created correctly - has all the emulators' entries.

Just a crazy idea - remove the emulators.cfg and re-run the configure action for your module

sudo ./retropie_packages.sh godot-engine configure

and check again the .cfg file.

hiulit

@mitu @BuZz @Efriim I finally got it working! :D

    local bin_file
    local bin_files
    local default
    local id
    local index
    local version

    ... some other code ...

    for index in "${!bin_files[@]}"; do
        default=0
        [[ "$index" -eq "${#bin_files[@]}-1" ]] && default=1 # Default to the last item in 'bin_files'.
        
        version="${bin_files[$index]}"
        version="$(echo $version | cut -d'_' -f 2)"
        
        addEmulator "$default" "$md_id-$version-$id" "godot-engine" "$md_inst/${bin_files[$index]} --main-pack %ROM%"
    done

So it seems like the error had something to do with the index variable (previously it was named i). Either it needed to be initialized as a local variable or the script didn't like that it was called i... I really don't know. But I got it working :)

Another thing that I found and maybe it's worth mentioning (and correct me if I'm wrong) is that when I run:

sudo ./retropie_packages.sh godot-engine configure

the config file:

/opt/retropie/configs/godot-engine/emulators.cfg

seems to just add the new stuff on top of the previous configs that were already there. I mean, it doesn't delete the file and creates it again with the new configs.

Shouldn't "deleting the old file and creating a new one" be the "correct" thing to do?

Thanks! :)