This tool automatically updates sprites in your GameMaker Studio 2.3+ project when the matching Aseprite file is changed on disk!

In some way it can be seen as successor to lazyload, except without Topher's tasteful UI or much other polish.

Update: There's a frontend for the tool now that you can use.

• GameMaker Studio 2.3 or higher (tested with 2.3.4)
• Aseprite (this tool uses Aseprite CLI to get frame data)
• Adequate backups/version control (in case something breaks)

• Create a sprite called spr_asebase.
  This will be used as the template for newly added sprites.
  If you don't want to use frame delays from Aseprite, set the animation type to "frame per game frame".
• Arrange your Aseprite sprites into a directory.
  If there are subdirectories, these will become as resource tree folders.
• Run the tool, give it your project path and aseprite directory path.
  (on Windows, just run the exe, on Mac/Linux install Neko VM runtime and run the tool from terminal via neko AseSync.n)
• Edit some [ase]sprites!
  The tool will automatically update the frames in existing sprites and add new ones as necessary.

The tool can be ran from CLI with additional parameters, like so:

AseSync <YYP path> <sprites directory> [...additional parameters]

Supported parameters:

• --folder <path>: Allows to specify the resource tree folder to dump new sprites in.
  Defaults to Sprites, but can be Sprites/subfolder, etc.
• --base <name>: Specifies the sprite to use as a template.
  Defaults to spr_asebase, failing that will pick the first sprite in project.
• --sync: Goes over all of the sprites in directory on startup.
  This is good if you've received a bunch of new sprites and would rather not open-save each of them.
• --once: Goes over all of the sprites in directory and then quits.
  (without watching for changes)
• --consent: Forces backup/source control consent without waiting for input.
  (so you can run this tool completely automated, but still, use source control)
• --aseprite <path>: Overrides Aseprite path for a session.

Initial setup:

haxelib git yyjson https://github.com/YAL-Haxe/yyjson
haxelib install haxe-files
haxelib install format

Neko build:

haxe -lib yyjson -lib haxe-files -lib format -cp . -neko bin/AseSync.n -main AseSync

C# build:

haxe -debug -lib yyjson -lib haxe-files -lib format -cp . -cs bin/cs -main AseSync
copy /Y bin\cs\bin\AseSync-Debug.exe bin\AseSync.exe