links:

• JSONLiveLink - unreal plugin
• ThirdPersonExampleMap_LL.RsScn - sample scene contains all the following objects
• Cone_LL.RsObj - sample transform
• Camera_LL.RsObj - sample camera
• Spotlight_LL.RsObj - sample light
• ActorImported_LL.RsObj - sample character

Pre-Installation for UE4.24 and up

1. create a new c++ project
2. close the project
3. add a folder to the project named "Plugins"
4. copy the JSONLiveLink folder to the Plugins folder
5. open the project
6. will get "attempt to load" message - answer yes

7. will get "rebuild now" message - answer yes

8. close the project

Installation:

1. copy the JSONLiveLink
   • If unreal engine v4.23 - Unzip the JSONLiveLink.zip into the unreal plugins folder: C:\Program Files\Epic Games\UE_4.23\Engine\Plugins
   • otherwise copy the JSONLiveLink folder from the Pre-Installation above into C:\Program Files\Epic Games\UE_4.xx\Engine\Plugins where xx is the engine version
2. start the unreal editor
3. edit > plugins
4. enable JSONLiveLinkEnhanced

5. under Built-in > Animation - enable Live Link
6. restart the editor
7. install rsx plugin in truespace

left to right - transform, camera, light, character

hook watch dog to the transform node, angle and color for lights, fov for camera, connect to mesh for characters

Usage:

• setup plugin in unreal
• window > livelink
• +Source > JSONLiveLink - type in the ip address and port number - do not press enter, click the ok button
• add livelink nodes in tS connecting to watch dog nodes
• check "FirstRun" and run to send subject data to unreal
• uncheck FirstRun for animation data transfer
• unreal editor - choose item in the level and press +Add Component button, type live to search for LiveLink Component, choose the subject from the list
• move item in truespace and it moves in the scene
• to move a skeletal mesh in a level, rt click it in the content browser and choose Create > Anim Blueprint
• right click inside the anim bp editor, type live to search for Live Link Pose, choose the subject, compile and add the anim blueprint to the level
• to preview skeletal mesh in the animation editor - change preview controller from Default to Live Link Preview Controller, select the subject in the dropdown
• to preview skeletal mesh with the camera, choose Enable Camera Sync, add a connection to an item in truespace with the subject name set as "EditorActiveCamera"
• the live link camera node can also be added to the EyeCamera found in the D3DView node to follow the viewport

Notes:

• github page - https://github.com/clintonman/JSONLiveLink/tree/enhanced
• camera does not send aspect ratio
• rsx plugin contains code for sending data over udp sockets used by the livelink plugin

back to the trueSpace Animation Plugins and Scripts list