JMF (Jackhammer Map Format)

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This page documents information about an engine not developed by Valve. This information is documented here because it has technical and/or historical relevance to Valve's engines.

The Jackhammer Map Format (JMF) is a binary file format used by J.A.C.K. to store map project data before being exported to MAP, like RMF. Unlike RMF, JMF supports objects being part of multiple visgroups, KVs longer than 15 characters, and Quake III patch meshes. Additionally, it can store paths in a slightly different manner, optimized for Jack's Path Tool.

Structs

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See the TWHL wiki page linked below.

See also

• MAP, used by the map compilers
• RMF, used by Hammer 3.x and openable by J.A.C.K.
• VMF, used by Hammer 4.x and openable by J.A.C.K.
• SMF, used by Sledge

External links

• Specification: JMF on THWL wiki
• JmfFormat.cs from MESS source code
• sledge-formats library