EXTCMD



extcmd( string , [param1], [param2] )

Some of the commands accept parameters (shown as "param1" and "param2" above).


Command Strings Simple
"pause" request the pause menu be opened
"reset" request a cart reset
"go_back" return to the previous cart if there is one
"label" set cart label
"shutdown" quit cartridge (from exported binary)
"folder" open current working folder on the host operating system
"audio_rec" start recording audio
"rec" set .gif video start point (F8)
"rec_frames" set video start point in frames mode


Command Strings with Parameters param1 param2
"screen" save a screenshot (F6) number, scaling factor save location, 0 = desktop, 1 = current folder
"video" save a .gif to desktop (F9) number, scaling factor save location, 0 = desktop, 1 = current folder
"audio_end" save recorded audio to desktop (no supported from web) save location, 0 = desktop, 1 = current folder  
"set_filename" set the filename for screenshots / gifs / audio recordings "filename"  
"set_title" set the host window title "title"  

Here is an example of how to use extcmd() with appropriate parameters.

extcmd("video", 4 , 1)

This will record a .gif, with a scaling factor of 4 (512x512 pixels), and save to the currently opened carts folder (user data). Useful for adding an easy button in the game for players to save a gif of the last things that happened in your game without teaching players what keyboard buttons to press, or for players who aren't using a keyboard.


Images in this Guide by NerdyTeachers is licensed under CC BY-SA 4.0

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31 May 2025

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