Skip to content

title: machine_var(name)

machine_var(name)

This is an MPF Event

The content on this page is technical documentation for an MPF Event.

Posted when a machine variable is added or changes value. (Machine variables are like player variables, except they're maintained machine-wide instead of per-player or per-game.)

Keyword arguments

(See the Conditional Events guide for details for how to create entries in your config file that only respond to certain combinations of the arguments below.)

change

: If the machine variable just changed, this will be the amount of the change. If it's not possible to determine a numeric change (for example, if this machine variable is a list), then this change value will be set to the boolean True.

prev_value

: The previous value of this machine variable, e.g. what it was before the current value.

value

: The new value of this machine variable.

Event is posted by machine_vars:

Something missing or wrong? You can fix it!

This website is edited by people like you! Is something wrong or missing? Is something out of date, or can you explain it better?

Please help us! You can fix it yourself and be an official "open source" contributor!

It's easy! See our Beginner's guide to editing the docs.

Page navigation via the keyboard: < >

You can navigate this site via the keyboard. There are two modes:

General navigation, when search is not focused:

  • F , S , / : open search dialog
  • P , , : go to previous page
  • N , . : go to next page

While using the search function:

  • Down , Up : select next / previous result
  • Esc , Tab : close search
  • Enter : go to highlighted page in the results