: Place your new assets via UndertaleModTool and control their behavior via your injected DLL. 3. Build and Package UnderminersTeam/UndertaleModTool: The most ... - GitHub
For a "complete feature" that requires new logic (e.g., a new boss or mechanic), you cannot use the internal code editor. Instead, use a companion tool like YYToolkit.
Serious logic changes in YYC require editing the machine code (Assembly) using external tools like x64dbg or Ghidra, then using UTMT to ensure the data file stays synchronized. Using UndertaleModTool with YYC Files
To understand the feature, you must understand the target. undertalemodtool yyc
rely on UndertaleModTool for editing YYC builds. Use it as a read-only explorer. For actual modding, get the standard data.win version.
Because YYC strips variable names, the tool automatically tries to map variables based on usage context.
: YYToolkit allows you to inject C++ code directly into a running YYC game. : Place your new assets via UndertaleModTool and
You can still easily swap sprites, sounds, and backgrounds since these are handled the same way as VM games.
A specific feature within the tool relevant to YYC is the script. For a YYC game, running this script will:
Because the actual logic resides in the game's .exe or a separate .dll file (like libSGM.so on Android or code.bin on consoles), UTMT cannot simply "re-type" the code for you. Modifying these games requires a different set of strategies: - GitHub For a "complete feature" that requires
: Access built-in scripts like EnableDebug.csx to test your changes in-game. 2. Bypass Code Limitations
⚡ If you are trying to mod a game and the "Scripts" tab is empty, you are dealing with a YYC export. Your first step should be checking if a "VM" version of the game exists (e.g., an older version on Steam), as modding that will be 10x easier. If you'd like to dive deeper, let me know: Are you trying to change sprites or rewrite game logic ? What specific game are you working on?
UndertaleModTool employs a sophisticated pipeline to handle YYC games, centered around a custom .