Redirecting Runcommand

BoxDrop

Is there a way to modify Runcommand's launch parameters within the runcommand-onstart script? Specifically, to modify the path parameter ($3) to point to a different location? Alternatively, is there a way to prevent runcommand from starting from within runcommand-onstart, and then invoke it again using different parameters?

I ask because I have some dummy roms in my SNES main folder. When one of those roms is launched, I'd like onstart to detect it and change the path to a different folder completely outside of the snes system folder, where the actual rom is being stored. I've looked into having snes launch specific shell scripts and also into using symbolic links, and neither meets my needs.

mitu

@boxdrop What's your use case ? Why can't you copy the ROMs in the SNES folder to be run as normal ?

BoxDrop

@mitu They're msu patched roms that need their own folders with additional files. I dislike having to go into (or even seeing) those additional folders in the snes gamelist.

Edit: I'm doing some digging and seeing potential in the runcustom script method that is shown here, so that might be a good alternative if onstart doesn't have the ability to do this on its own.

mitu

@boxdrop I think you're best bet is to create a custom system - as you found in the topic you referenced - and write a script wrapper over the Runcommand, where you can control how to run it.

cloudlink

Could you just use a symlink to the rom? It's like a shortcut file.

ln -s /folderorfile/link/will/point/to /name/of/the/link

BoxDrop

@cloudlink I don't think so, though admittedly I haven't tried it. The emulator will look for the files at the path where runcommand tells it the rom is, and probably won't even see that the rom is symlinked.

BoxDrop

Okay, I'm running with the custom system idea. I've written up my first bash script for that purpose. Is there a bash guru who can take a look at it and let me know if it looks all right, or if there is a cleaner way to handle it?

"#!/usr/bin/env bash

if [[ $1 = "/home/pi/RetroPie/roms/snes/act2_msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Act Raiser 2 MSU v1 Kurrono, Conn 2018-03-25/act2_msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/actraiser_msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Actraiser - Abyss Rebirth OST, MSU v1 Darkshock/actraiser_msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/axe_msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Axelay MSU v1 PepilloPEV 2018-04-01/axe_msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/chrono_msu.smc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Chrono Trigger Remastered+FMV Beta v1.1 Resume FLAC Dracula9AntiChapel, Darkshock, Qwertymodo Audio Fix/chrono_msu.smc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/dc_msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Demon Crest Remastered ArcadeTV MIDI MSU v1 RedScorpion, ArcadeTV, Conn 2018-03-23/dc_msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/drs_msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Death and Return of Superman MSU v2 Conn, Kurrono 2017-11-3/drs_msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/ewj2-msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Earthworm Jim 2 Sega Saturn OST MSU v1.1 PepilloPEV 2018-04-01/ewj2-msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/ff3.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Final Fantasy VI Balance and Ruin - Covarr, Qwertymodo Audio Fix/ff3.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/g3-msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Gradius MSU Kurrono Kai Mix MSU v1.4b PepilloPEV, Conn/g3-msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/iog_msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Illusion of Gaia MSU Conn v1 2018-01-31/iog_msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/jm_msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Joe and Mac MSU v1 Kurrono/jm_msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/lk_msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Lion King Film OST v2 kurrono 2018-03-24/lk_msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/lmn_msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Legend of the Mystical Ninja MSU v1 Kurrono, Conn/lmn_msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/mm-msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Mickey Mania Sega Saturn OST MSU v1 PepilloPEV 2018-04-01/mm-msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/pf_msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Pilotwings MSU v4 Kurrono 2017-12-30/pf_msu1.sfc"
elif [[ $1 = "/home/pi/RetroPie/roms/snes/pw_msu1.sfc" ]]
then
	rom="/home/pi/RetroPie/roms/msu/Pitfall MSU v1 Kurrono, pepilloPev, Conn 2018-03-22/pw_msu1.sfc"
else
	rom="$1"
fi

/opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ snes "$rom"

mitu

I'd probably rewrite it like

#!/usr/bin/env bash

ROMDIR=/home/pi/RetroPie/roms/snes
MSUROMDIR=/home/pi/RetroPie/roms/msu

rom=$1

if [[ $rom == *"act2_msu1.sfc" ]]; then
        rom="${MSUROMDIR}/Act Raiser 2 MSU v1 Kurrono, Conn 2018-03-25/act2_msu1.sfc"
fi

if [[ $rom =~ *"actraiser_msu1.sfc" ]]; then
        rom="${MSUROMDIR}/Actraiser - Abyss Rebirth OST, MSU v1 Darkshock/actraiser_msu1.sfc"
fi

# and all other roms...


/opt/retropie/supplementary/runcommand/runcommand.sh 0 _SYS_ snes "$rom"