Added the abiity to tag and retrieve any anim graph node (similar to how we could reference linked anim graph nodes previously).
Ported linked anim graph nodes to use the new system
Added the ability to reference any anim graph node by tag (via a new custom node, spawnable from the context menu, with the appearance of an actor reference in a level blueprint)
Added tag display and editing in the bottom-right of anim graph nodes
Added new override point to SGraphNodeK2Var to allow for title widget parameters to be overriden by child classes
#jira UE-126286 - Anim node functions: Add anim node references
#rb Jurre.deBaare
#ROBOMERGE-AUTHOR: thomas.sarkanen
#ROBOMERGE-SOURCE: CL 17472894 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v870-17433530)
[CL 17472913 by thomas sarkanen in ue5-release-engine-test branch]
Also fixes missing error when using a non-thread-safe function call on an anim node
Also exposes CreateNodeFunctionsWidget on base anim graph node widget so that non-derived types can use it
#jira UE-124986 - Users Can Change Anim Node Functions to Non-Thread Safe
#rb Jurre.deBaare
#ROBOMERGE-AUTHOR: thomas.sarkanen
#ROBOMERGE-SOURCE: CL 17437637 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v870-17433530)
[CL 17437664 by thomas sarkanen in ue5-release-engine-test branch]
Adds 'template' anim BP concept. These anim BPs have no TargetSkeleton and as such cannot have direct references to animations placed inside of their anim graphs
Adds function call support from anim nodes. All anim graph nodes can now call functions when initialized, updated, evaluated or when they first become relevant.
Relevancy is established using a new FAnimSubsystemInstance_NodeRelevancy which tracks nodes in a local map, per UAnimInstance, if nodes require it.
Functions are displayed on the node if bound, and in the details panel.
Added a new override point to FAnimSubsystemInstance to allow for WT init.
Moved FMemberReference customization into a public header so it can be used on anim node functions.
Wrapped functions up into FAnimNodeFunctionRef structure so they can be re-used more effectively. Converted CallFunction node to use them.
Added a couple of simple BP function libraries to demonstrate the use of the new FAnimNodeContext (this is intended to be a generic way of exposing FAnimNode_Base types to script without the node types themselves having to be known to script directly).
Added the ability to set exposed properties as 'always dynamic' so they appear in mutable data rather than being merged into constants. This allows for the anim node data API to be changed to be less strict (and more script friendly). Now values can be set in mutable data (via GET_MUTABLE_ANIM_NODE_DATA_PTR) and attempted sets to constant data can be ignored and reported to client code.
A few minor crash fixes with edge cases (inc when trying to open an asset editor fails because of a missing skeleton/cancellation).
Also fixes an issue where literal linked anim graph/control rig/custom poroperty node inputs didnt get copied
#rb Jurre.deBaare,Aaron.Cox
#ROBOMERGE-SOURCE: CL 16703644 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v835-16672529)
[CL 16703653 by thomas sarkanen in ue5-release-engine-test branch]
Added a new animation graph node that hosts its own UBlendSpaceBase. Modified UBlendSpaceBase to allow for pose links to be evaluated as the sample points.
The new blend space graphs can be spawned from existing UBlendSpace and UBlendSpace1D assets, or they can be created from scratch, or they can be converted from existing blendspace player nodes via the context menu.
Fixed anim node conversion functions so that their transactions work correctly.
Updated FBlueprintEditorUtils::IsGraphNameUnique to allow it to work with any object as the outer, not just UBlueprint. UBlueprint still has a special case for functions and events. This is to support GenerateUniqueGraphName within a scope (e.g. an outer graph).
Formalized the concept of 'node sub-graphs' (as well as the composite node pattern a little). Previously a number of known node types that contained sub-graphs (e.g. UK2Node_Composite) had special case logic for dealing with node/graph deletion etc. Now any node can opt into this behaviour via the GetSubGraphs() override.
Added status bar readouts for the blendspace grid, so we dont have to stuff the prompts into the tooltip any more.
Moved anim BP related APIs out of FBlueprintEditor. They are always used via FAnimationBlueprintEditor.
Refactored graph title bar widget creation out into a function to allow other document tab factories to create it.
Altered breadcrumb trail click callbacks and SMyBlueprint::ExecuteAction to always JumpToHyperLink rather than calling OpenDocument directly. This allows unknown (to FBlueprintEditor) document types that reference objects to be correctly jumped to using the breadcrumb trail. Derived asset editors (i.e. FAnimationBlueprintEditor) can intercept the JumpToHyperlink call to ensure that the correct document is presented (i.e. the correct tab payload is generated).
Instead of making yet another bunch of duplicated code for handling the various alpha blend options, refactored this into FAnimGraphNodeAlphaOptions (for editor code) and FAnimNodeAlphaOptions (for runtime code).
Added OnCopyTermDefaultsToDefaultObject for per-node copying of default values from editor node to runtime node, rather than another special-case in the compiler.
#rb Jurre.deBaare,Phillip.Kavan
[CL 15177316 by Thomas Sarkanen in ue5-main branch]
