FBX to RTM

Basic information

Author: Bohemia Interactive

Compatibility: Arma 3

Download: Part of Arma 3 Tools package on Steam

Description

Description: FBX to RTM is a simple tool to convert animations from Motion Builder FBX format into RV Engine RTM

Usage

Line call:

FBXToRTMGui.exe
Fbx2Rtm.exe [[-cfg model.xml] [-skeleton skeletonname]][-step bonename][-removestep][-bindpose bindpose.fbx][-fps framerate] [-scale scale][-log logname][-output filename.rtm] filename.fbx

• cfg XML config with skeleton definitions
• skeleton Name of skeleton definition
• step Name of root bone defining movement (Usually "Hips")
• removestep Neutralize movement (remove step)
• bindpose Fbx scene with character in bind pose. When not defined, the first animation frame is taken as bind pose.
• fps Desired animation framerate. Default 30
• scale Scale factor. Default is 0.01
• log Name of log-file
• output Output file name. Default is source name with .rtm extension

Licenses

Licensing: Bohemia Interactive End User License Agreement

Additional information

Supported formats

Input:

• FBX (Motion Builder)

Output:

• RTM (nonbinarized)

How to use it

by Zdeněk "Vespa" Vespalec

in Motionbuilder

• Use MoBu 2009. Other versions probably work too, but they are not tested. However, Mobu 2015 has been tested and does not work with FBXtoRTM.
• Open a scene, do your animation and then select "Animation - Plot all" and plot it in the same FPS you intend it to have for game. Then save.
• To match your animations on existing Arma3 ones, you can use poses from bank_20_07_2012.fbx.

export procedure using FbxToRtm:

• Run FBXToRTMGui.exe and manually set paths in fields (to bindposeman.fbx and modelbox.xml).
• Pick input file and output dir and filename.
• Make sure FPS is the same as input file FPS.
• Make sure to pick ManSkeleton and Hips as root bone.
• Check or not check step. (aka normalization) Depends what you want to achieve.
• Hit export, and it should produce an .rtm.
• Test the RTM with \p3d_skeleton\Male-light.p3d. If the rifle and launcher float (don't stick on a characters back) then you encountered so called "rifle/launcher bug". it is some voodoo in motionbuilder that nobody knows how to solve.

"fixing" rifle/launcher bug

• Open \rifle_bug_fix\AidlPercMstpSrasWrflDnon_1.fbx.
• Plot all, do not save.
• Open your actual file.
• Plot all, save.
• Try exporting and see if the bug disappeared.
• If not, the repeat the process with \rifle_bug_fix\AmovPercMrunSlowWpstDbl.fbx.
• Once you get your motionbuilder to a state when it doesn't produce weapon bugs, it will stay that way until you close it - so keep it running if you plan to work longer periods.