.MACT File Extension
Modifiable Action Tree
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What is a MACT file?
A MACT file is an action tree data file used by community-developed modding tools for Bully (released as Canis Canem Edit in some regions). It contains character behavior and AI-related data that controls how characters react to events, perform actions, and interact with the game world. MACT files store plain text that modders can read and modify more easily than the game's native .CAT files.
More Information
You will most likely only encounter MACT files when modding Bully. The game stores its action trees in compiled CAT files, which are optimized for use by the game engine. Modding tools, such as Marcdred's bully-mact-tool, can convert these CAT files into MACT files, allowing users to examine and edit the underlying behavior data.
After completing their modifications, they can convert MACT files back into CAT files for use in the game. This workflow allows modders to customize character behaviors, experiment with gameplay mechanics, and create new modifications.
How to open a MACT file
You can open MACT files with any text editor, including Notepad++ and Microsoft Visual Studio Code. Simple text editors, such as Microsoft Notepad and Apple TextEdit, can also open and modify MACT files.
How to convert a MACT file
Marcdred's bully-mact-tool can convert MACT files to CAT files. Modders often convert CAT files from Bully to MACT files to edit them. After finishing their modifications, they convert the MACT files back to CAT files.