Select button issues with LSDJ (Demo) on GB

johne79

LSDJ the music chiptune composing app on Gameboy uses button combinations like SELECT+RIGHT to switch between screens (such as Pattern Editor, Song Editor, etc).

When I try this it doesn't work but will just give me a little yellow message on the bottom that it changed save state slots. I CAN use rshift+left/right to change screens.

I'm very new to RetroPie and I was just wondering how to change the behavior appropriately for this specific ROM on Gameboy. I'm using a USB NES gamepad for my gamepad. So I want to use SELECT+(RIGHT/LEFT/UP/DOWN) during the game and remap the change save slot behaviors to keyboard keys.

Started looking through the docs and retroarch.cfg but only have a vague idea how I might do this.

backstander

@johne79
You can over-ride the default RetroArch/libretro Hotkey behavior for a specific game by putting your custom configuration in a file named <ROM filename>.zip.cfg in the same directory as your ROM.

For example:
If your ROM file is named lsdj3_1_9_demo.zip in ~/RetroPie/roms/gb/ then you would make a file named ~/RetroPie/roms/gb/lsdj3_1_9_demo.zip.cfg.

Now I'm not sure of the information you need to put in this file because I've never tried this and I'm not at my RPi.

backstander

@johne79
Okay I experimented with this over my lunch break and this is what I discovered!

From my understanding input_enable_hotkey is for a keyboard and input_enable_hotkey_btn is for a game controller but I had to set both to the same keyboard key before it would work.

Here is an example of my <ROM filename>.zip.cfg:

# Hotkey button
input_enable_hotkey = "del"
input_enable_hotkey_btn = "del"
# Exit emulator
input_exit_emulator = "Z"
input_exit_emulator_btn = "Z"
# Reset ROM
input_reset = "X"
input_reset_btn = "X"

Also Hotkey + B button on game controller to save state and Hotkey + X button on game controller to load state. So with my "Hotkey" set to the Delete key on the keyboard, I was able to hold down the Delete key on my keyboard and then press the B button on game controller to successfully save and X to load.

johne79

Bless you backstander, it works! ^_^

I had to make sure the input_state_slot_increase_btn = "S" and input_state_slot_decrease_btn = "A" were set (I used Z/X, and Q/W for Exit/Reset ROM).

itscherrybomb

@johne79
Hellooo, I try to do this on my rasppberry pi, but nothing happen, I have my room with lsdj.gb, pls, how i can do it?