RetroArch controller mapping
RetroArch controller mapping is very specific, before going into details, it is important to understand the general RetroArch mapping principles.
RetroArch mapping principle
Information on how RetroArch manages controls can be found here:
RetroArch has a 2-step approach with controllers mapping:
Step 1: mapping of your physical gamepad with RetroArch "RetroPad"
Step 2: mapping of the Retropad with the original console or computer game controller
The guide in this page mostly treats about the second step, as it is assumed that RetroBat is passing all your physical gamepad buttons to RetroArch (this should always be the case if you have correctly configured your controller in RetroBat).
General Binding
The mapping done in Step 1 can be found in the following section of RetroArch configuration:
General binding is stored in the "retroarch.cfg" file located in /emulators/retroarch
Remap
The remap information (step 2) can be found in the Quick Settings menu of RetroArch, while a core is running:
Remap files are saved as .rmp files in /emulators/retroarch/config/remaps folder.
How to change mapping for RetroArch when using RetroBat ?
RetroBat allows multiple ways to modify mapping of your controller in RetroArch, the wiki will guide you through the following methods:
Using a YAML core override file (remap)
Forcing a controller binding configuration (change controller binding)
Forcing a keyboard controller (such as IPAC2 or TankStick controllers)
Enabling a special controller type (for some systems/cores only)
Manually create a remap file for a game
Open RetroBat and launch the game for which you require a specific remapping.
Once in the game, press SELECT + 
buttons simultaneously to open the RetroArch menu, and select Quick Menu:
In the QUICK MENU list, you will find " Controls "
From there, proceed with the required remapping:
In this example, i have mapped the RetroPad left analog up input to the key defined for A in RetroBat (which is W on my keyboard):
Note that you can only remap the keys that have been passed by RetroBat to retroArch based on your controller.
Once the mapping is performed, exit and go back to the CONTROLS menu, then select the "Manage Remap Files" option:
In the next submenu, save the remap file for the game (it will apply to this game only)
Once saved, the new remap will now be used next time you run the game.
You cannot use the option to "save for core", as this would automatically be erased by RetroBat upon next launch.
Using a core override remap file
Read this chapter for general information.
RetroArch core remap files provided with RetroBat are located in the \system\resources\inputmapping folder of your RetroBat installation, they start with the "libretro_" prefix.
The logic RetroBat uses to find a file is the following:
Search in
\user\inputmappingfor a file named libretro_<core>_<system>.ymlSearch in
\user\inputmappingfor a file named libretro_<core>.ymlSearch in
\user\inputmappingfor a file named libretro.ymlSearch in
\system\resources\inputmappingfor a file named libretro_<core>_<system>.ymlSearch in
\system\resources\inputmappingfor a file named libretro_<core>.ymlSearch in
\system\resources\inputmappingfor a file named libretro.yml
If a yaml file is found, RetroBat reads the file and searches for a container matching the name of the game rom file:
If no container exists for the game, RetroBat tries to get the "default" container:
For arcade systems, a single game can have multiple layouts based on the option set in RetroBat interface ADVANCED SETTINGS > CONTROLS:
RetroBat will first look for the container with the selected layout, before falling back to the game specific container:
When a specific container is found, RetroBat automatically generates and modifies the core remap file when running a game, which automatically applies the selected remap:
Force a controller binding configuration
It is possible to force a controller with a specific binding in RetroArch, this is useful in case a specific controller would not be correctly configured by RetroBat or in case it is unknownn by RetroArch but working correctly when perforing a manual mapping in RetroArch binding options.
RetroBat ships with a specificfile named "retroarch_controller.json" located in the \system\resources\inputmapping folder of the RetroBat installation.
This file is a json-formatted file, it contains the exact mapping required in the retroarch.cfg file based on the controller SDL guid:
The above example is for the NSO N64 controller, the different values required in the file are the following:
Name: for information only
Guid: allows RetroBat to enable the specific mapping based on the connected controller (the SDL GUID of the controller can be found in the es_input.cfg file or in the emulatorlauncher.log after having launched a game). Multiple guids can be entered if a controller has multiple revisions.
Driver: can be used if the RetroArch mapping is different depending on the selected Joyapd Driver in RetroArch, possible values are : sdl2 (RetroBat default), xinput, dinput
Mapping: the actual mapping to be set in
retroarch.cfg file, for each button. In order to know the mapping for the controller, perform the configuration manually by running retroarch.exe, exit retroarch, and open the retroarch.cfg file, search for the lines starting with input_player1_ and ending with btn or axis.HotkeyMapping: the mapping for hotkeys for the controller
ControllerInfo: can be used to adjust analog sensitivity or for other specific purposes (ask the RetroBat team if a feature is required)
Do not hesitate to share with the RetroBat team any specific controller mapping that you have created.
Forcing a keyboard controller
Some controllers are recognized by windows as keyboards, this is the case for example for the X-Arcade Tankstick or the IPAC2.
RetroBat provides an autoconfiguration for these controller, which is forced from a YAML file located in the \system\resources\inputmapping\kbpads folder of your RetroBat installation:
The file contains the mapping to force in RetroArch for a device:
If you own one of these devices, you can enable the automatic mapping within the RetroBat MAIN MENU > GAME SETTINGS > RETROARCH OPTIONS > CONTROLS:
If you own a different controller that is recognized as a keyboard, you can share the keyboard mapping for the stick with the RetroBat team and it will be added to RetroBat.
Enable a special controller type
Look at this wiki page for more details.
Use a pre-defined layout
RetroBat does offer, for multiple systems, the ability to change the button mapping layout.
The option can usually be found in the RetroBat advanced settings > controls menu:
More information about the different layouts can be found on the page for the system.
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