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Config file section
|Valid in machine config files||YES|
|Valid in mode config files||YES|
config: section of your configuration files allows you to
specify additional configuration files that will be read in after
the current file is loaded. Here’s an example:
config: - machine.yaml - devices.yaml - game.yaml - textstrings.yaml - keymap.yaml
Note that each file is on its own line, which starts with a minus, then a space, then the file. (The space is important.) Also note that you can (optionally) specify a path, like this:
- config\machine.yaml - config/my_game/machine.yaml
MPF will attempt to convert relative and absolute paths based on your OS, and it can deal with slashes in either direction.
MPF will then open those files one-by-one and merge their settings into the master configuration dictionary. The settings are merged together in the order the files are listed, so if multiple files specify the same configuration option then whichever one comes later in the list will overwrite any options that have already been specified.
You can also have
config: sections in other config files, meaning
that one config file can call another which will call another, etc.
Whenever MPF encounters a new config file, it will add it to
the end of the list. And since files are processed in order, if there
are any conflicting settings then the last file on the list will
“win.” Also note that the framework will attempt to load the file from
the current working directory (containing the config file that
entry is from. If that fails then it will try the last
known good directory that worked for a config file.