Documentation available at:

https://action-blocks.other-realms-animation.com/en/latest/

News: https://bsky.app/profile/otrealms.bsky.social

YouTube: https://youtube.com/playlist?list=PLVs4xI-p9xLDVu0hO3wxzcHpQCLSFcUbn&si=SDkDfxz8WV2uvKH2

DemoScenes: https://ln5.sync.com/dl/02e219460#a658vwrm-6wyf73km-2uw8aqkp-p865k3sf

Addon Includes Abby demo scene.

Important Practices

• For Characters, works best when controllers are embedded in a single armature or slotted action.

• Start animations on frame 1.

• Decimate baked animations for best performance.

• Make a dedicated Root Bone when using Root Motion from mocap data, vertical pole aligned straight up recommended. (Make Root Bone, Transfer and Mixamo Conversion operators available)

• Make sure Root Bone rotations are using Euler rotations (Convert To Euler operator available).

• Include Scale keyframes to avoid zero scale errors.

• Ensure Inherit Rotation is enabled on bone relations. Otherwise they won't be affected by Root Motion.

More details: https://action-blocks.other-realms-animation.com/en/latest/#recommended-practices-and-tips

How to Mix

V2.0+ Should be installed as and extension from disk

V2.0 Nodes may not be fully compatible with older versions and is for Blender 4.0+

M/D/Y

2.0.2.2 (07/14/2026)

• NEW fcurve group filters, add a delete all operator
• FIXED GPU draw lines error on OpenGl backend
• FIXED GPU draw point size error on OpenGl backend
• FIXED Make Root bone Y Back Z Up gives incorrect Root Motion axis settings (also affects Mixamo conversion)
• FIXED action block end not scaled with time scale
• FIXED duration doesn't seem to match actual timeline
• FIXED handled error if connecting a duration socket to the wrong input type
• FIXED don't allow unsupported ops in edit mode
• UPDATE Armatures with no assigned action will be assigned the action on edit action operator despite being a bit ambiguous
• UPDATE all objects within the actor collection will have initialised animation data.
• UPDATE Closes actions operations menu when operator clicked
• UPDATE "Use total" duration option is on output duration sockets instead of inputs.
• UPDATE Improved action popup menu scaling and flow layout
• FIXED fcurve group filters, batch add selected bones, adds empty slots

2.0.2.1 hotfix3 (03/23/2026)

• FIXED missing location_keys error

• FIXED error when clicking on a operator popup panel and a frame exists

• FIXED incorrect action range and frame offsets when using root motion plus a slot with shape keys

• FIXED Action Node repeats with Action Range Start or Block Range Start giving incorrect offsets and breaking root motion offsets

• FIXED Undo directly after building animation doesn't revert hidden modifiers and objects

• FIXED Slide Removal takes no affect while adjusting slider

2.0.2.1 hotfix2

• FIXED Loading Error

2.0.2.1 hotfix1

• UPDATE Removed Hold Frames option, hold frames are always added. A Spacer node can be used to add transition time.
• UPDATE display warning when Predict Following Target doesn't find a target
• FIXED unwanted pause in-between root motion targets
• FIXED incorrect rotations in some Root offset repeats
• FIXED popup menus not always relating to the node it was clicked on
• FIXED edit at root offsets gives incorrect position

2.0.1 (16-07-2025)

• FIXED line and point width now supported for Vulkan, Blender 4.5
• FIXED zero division error on action node UI

2.0 (26-06-2025)

• NEW Actors list source scene option

• NEW Root motion target offsets, predict next target for rotation.

• NEW show block points in motion path

• UPDATE Debug, add node calculation times to interface.

• UPDATE Duration out shows frame progress

• UPDATE Filter groups, new toggle offsets button and highlight groups if they match the active pose bone

• UPDATE Filter groups, display only filters related to selected pose bones option

• FIXED Major slowdown caused by evaluating unnecessary objects, (motion path and offset targets)

• FIXED Target offset calculation error when forward vector is perfectly straight

• FIXED Filter Groups being excluded when matching names in other slots

• FIXED Filter Group displays Root offset settings when the name matches the root of another slot

• FIXED Node chain broken at Mix node

2.0 Beta2 (12-06-2025)

• NEW ABBY demo scene, provides a dummy actor, a basic action library and AB node graphs.
• NEW Normalize Quaternions operator, designed to fix quaternion values exceeding -1 to +1 range which results in extreme transitions
• NEW Root motion settings presets
• UPDATE Multiple filters can now be add from selected pose bones
• UPDATE Filter offset are clamped for quaternions
• UPDATE Blend direction available for Replace mix mode
• UPDATE Blend-Out property available for Mix Node, Replace and Mix modes
• FIXED Overlay error when no root group is assigned
• FIXED Re-assign the root bone to actor if already exists on Create Root Bone operation
• FIXED Smooth interpolation mode for root offsets uses linear interpolation on the first frame of location channels.
• FIXED edit actions only assigning action to the active object
• FIXED edit action, make the node's actor the active index
• FIXED edit action, axis conversion
• FIXED root motion targets, axis conversion

2.0 Beta (20-05-2025)

• NEW Motion Path Option, always/only when selected
• NEW option to disable 'edit with root offset'
• FIXED Pose match, cases frames overlap
• FIXED Pose Match, Avoid influence of block offsets when there isn't a pose bone source or listed bones
• FIXED Evaluate Root Vectors doesn't add missing channels
• FIXED Action range, always changes active action to 'action out'
• FIXED whenever the output action is active, update preview range
• UPDATE socket alert colour when wrong types are connected
• UPDATE Socket colour distinction between duration, int and float types
• UPDATE Display un-altered Action frame range
• UPDATE Pose Match no longer limited to pose bone mode (FK-ROT,IK-LOC), instead uses all available channels

2.0 Alpha (16-05-2025)

• NEW Documentation links (docs need updating)

• NEW calculate and update display root motion path

• NEW Filter mode MIXED, replace with filter switch.

• NEW Root Offsets and offset target feature

• NEW Edit with Root Motion, Auxiliary Root object for Editing actions at the root motion offset position for the selected block

• NEW Evaluate Root Vectors operator, results in more accurate root motion

• NEW Action Node Blending now offers blend direction (Back,Forwards and Both) with subtle bezier smoothing

• NEW Customizable motion path overlay

• NEW Make new/duplicate action button

• UPDATE Blender Extension conversion

• UPDATE Full support for reverse actions (TODO Handles)

• UPDATE Slotted cache data

• UPDATE MIX Node, improved evaluation of frames and ensures there is a frame available for blend-in

• UPDATE Mix Blend only does Blend-In for flexibility

• UPDATE Action Blend-IN and looping creates evaluated frames at blending start/end

• UPDATE Actor suffix renaming for doubles, active index to follow new or deleted index

• UPDATE Collection based Actor

• UPDATE Mix node Mix mode skips root bone and assumes input1

• UPDATE Remove invert root rot, loc. Replace with filters

• UPDATE Group filters custom mode

• UPDATE Action repeats are trimmed by block range end

• UPDATE Block Range, auto clamping and visualization as well as ensuring and first frame

• UPDATE Node activation lights

• UPDATE Moved extra parameters to node right panel

• FIXED debug error on slide removal

• FIXED Crash on undo

• FIXED Slide Removal, incorrect syntax for formula resulting in no root motion

• FIXED Slide Removal, incorrect value when combined with frame step

• FIXED Duration input sockets not updating when Use Total enabled

• FIXED Mix Node, Evaluate Range not always ensuring an end frame

• FIXED Mix Node, Evaluate Range missing in Extend mode

• FIXED Duration display when using Block Range

• FIXED MIX Node, if input2 is longer than1, remaining frames are added without evaluation

Updates

0.1.5 (02-04-2025)

• FIXED node message not refreshing

• FIXED debug error on slide removal

• FIXED slide removal, incorrect syntax for formula resulting in no root motion

0.1.4  hotfix1 (17-03-2025)

• FIXED handles when and all linear fcurve is joined with an fcurve containing bezier keyframes.
• FIXED Spacer Node update error when changing interpolation property
• FIXED Incorrect root motion when filling the last frame of an action/repeat

0.1.4  (14-03-2025)

• NEW Dedicated Mixamo conversion operator for use with root motion

• UPDATE Replace With Zero Values option for Transfer Keyframes operator

• UPDATE Disable all Action Node UI when Action node is frozen

• UPDATE 10% calculation time reduction on baked/mocap data by only calculate handles for frames with bezier interpolation

• FIXED some minor bugs and warnings relating to missing Root bone

• FIXED Freeze Action Node error

• FIXED handling of animations without fcurve groups
• FIXED missing array error, spacer node
• FIXED Mix node error when array are not matching shape

• FIXED Non-bezier detection error when appending to bezier frames

0.1.3

(16-09-2024) hotfix

• FIXED Attribute Error when using pose bones and one not found

• FIXED Action filter, missing location adjustments on armatures

(31-07-2024)

• NEW Associate actors per Out node

• NEW Value Node

• UPDATE Scale and repeat action are socket input (breaking change)

• UPDATE Edit action in timeline when using an action operator

• UPDATE Select actor plus pre-fill on all action operators

• UPDATE Update actor name button and associations on all nodes

• UPDATE Basic node reroute support for value sockets

• FIXED Mix and Replace when using 'use range' results in culling when frames are sparse. Added evaluate range option to add star and end frames.

• FIXED Scale frames issue when using mix blend mode

• FIXED Incorrect blending formula leading to mixing with 0 value

• FIXED Prevent animation keys on node properties

• FIXED Prevent Convert to Euler operation on channels without data

• FIXED Action range with repeats and scaling, causes overlap on first repeat

0.1.2

0.1.2 (21-02-2024)

• UPDATE Removed 'Trim To Fit' from Mix nodes when using 'Extend' option
  

0.1.2 (29-01-2024)

• FIXED Error when using Use Range on Mix nodes
  

0.1.2 (26-01-2024)

• FIXED Dopesheet View All Error when editing an action in Blender 4.0.2
  

0.1.2 (14-01-2024)

• FIXED Transferring Keyframes from from non-bone channels
  
• NEW added filter group location multiplier to scale fcurve amplitude
  

0.1.2 (10-01-2024)

• FIXED bug when using match pose on empty channels
  
• UPDATE Show warning if quaternion rotations are being used with root motion

0.1.2 (13-06-2023)

• FIXED error when using mix node replace , can't find 'Root motion'

• NEW Action caching, for much faster reuse of Actions and re-building animation
• FIXED Blending
  

0.1.2 Beta (08-05-2023)

• NEW Pose Matching, utilizing Pose Bones
• UPDATE Pose Bones now in Actor Settings
• UPDATE Improved Root Slide Removal
  

0.1.2 Beta (06-03-2023)

• NEW Slide removal for Root Motion, IK & FK
• NEW Mix Node, option to trim duration to input 1
• FIXED Duration calculation for muted nodes
  
• FIXED Duplicate first frame on blend-in
• FIXED Action Range trimming too much from start frame
  

0.1.2 Beta (16-02-2023)

• NEW Invert Root translation (Action Node)
• NEW Filter group blending weights (Action Node)
  
• NEW Filter group location offset (Action Node)
• UPDATE Timeline Marker names follow node label if available
• UPDATE Pressing 'Build' will make the output action active and select actor
• FIXED avoid decimal point Scale parameter from clipping last frame when using Action Range
• FIXED Update preview range on build
• FIXED Blend in/Out on Mix Node (Mix mode) respects Factor
  
  

0.1.2 Beta (03-02-2023)

• NEW Filter channels per Action node for mixing Actions
• NEW Make Root Bone operator
  
• UPDATE Convert to Euler can use the active object if Actor not assigned
• UPDATE more compact UI  for Action nodes
  
• UPDATE Renamed Mix node to Mix Action to avoid confusion
• FIXED Frozen node timing fixed
  
• FIXED Action duration not always correct

0.1.1

0.1.1 (2-11-2022)

• FIXED- Keyframe handles when Action node scale is less than 1.0
• FIXED- Keyframe handles when handle frame matches keframe due to rounding
  
• FIXED- Now removes any duplicate keyframes
• FIXED-Spacer Node bezier handle positions
• UPDATE-Blend-in on Action Node now blender forward instead of forward and back. This may become an option in the future.
  
• FIXED - Action preview timing when in Graph Editor
• FIXED - Other minor ui bugs
  

0.1.1 (28-10-2022)

• FIXED- Transfer keys, to create missing fcurves in target
• FIXED-Root motion handles recalculation
• FIXED-Keep the rotation for the first node using root motion action
• FIXED-Blending on Replace mode(Mix Node) when using ranges
  
• UPDATE-highlight edit button to show if action is being edited
• UPDATE-option to delete fcurves form source when usin Transfer Keys
• NEW- Adjistment option on Action Node, flip rotation axis
  
• + fixde other minor bugs

0.1

0.1.0 (20-10-2022)

• FIXED -Jittering on 'Mix' type on Mix Node
• UPDATE - Added Blending for Mix type
  

0.1.0 (20-10-2022)

• FIXED - Added total duration time toggle to duration inputs
  
• FIXED- handles positions on reversed animation
• FIXED- Warning when editing action without actors, should only appear once
  

0.1.0 (19-10-2022)

• FIXED -Mix node using Mix mode properly inserts needed frames from both input1 and input2
• FIXED - Prevented frozen frames from being affected by blending