A tool for viewing compiled blueprint code of Unreal Engine 4-5 games. 4.25 and later versions are supported.
Blueprint decompilation:
- Basic decompilation: done
- Loops: done
- Macros: mostly done (some built-in macros are missing)
- Timelines: done
- Input events: partially done
- Delegates: done
- Functions with multiple exec pins: not yet
- Anim BPs: not yet
References search:
- Basic asset reference search: done
- Search for unreferenced assets: done but might be inaccurate
- Search for variable or function usage: not yet
- Search inside a graph: not yet
Not sure if i will do that:
- Blueprints compilation
- Runtime blueprint debugger
To use the tool you need to create a dump from the game process using jmap_dumper.
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Download and extract jmap_dumper v0.2.0 or above.
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Make a .jmap dump file replacing 12345 with your game process id
jmap_dumper --pid 12345 output.jmap -
Launch the program and create new profile for your game. Provide a .jmap file you just generated.
Several engine's control flow nodes (including loops) are actually just BP macros, and they are getting inlined during compilation. The tool tries to find all possible macro instances in a graph and replace them with macro calls. The tool is shipped with some of the engine built-in macros. Creating your own macros is possible but very limited for now.
You can compare blueprints of two different versions of the game. To open a comparing mode settings, press "Compare" button at the top left. Diff view might be inaccurate.
Searching for reference is currently limited and possibly inaccurate. More search features will be added later.