- Added ability for tasks to request transitions
- Added buffered transition requests
- Added callback method to FStateTreeTaskBase which is called during transition triggering
- Allow FStateTreeStateLink to be added to tasks and conditions (resolved automatically during compile)
#jira UE-174250
#preflight 63ca7ee8977c62635603afcb
[CL 23815873 by mikko mononen in ue5-main branch]
- Calling GetStateTreeRunStatus() on unintialized instance is not error anymore, returns failed
- Made UStateTreeComponent::GetStateTreeRunStatus() to return failed instead of unset to be consistent with FStateTreeExecutionContext
- Allow to access execution state directly from instance data without exec context
- Do no crete exec context in UStateTreeComponent when sending events
#jira UE-173207
#preflight 63bfec4af02e72c08cab1811
[CL 23661828 by mikko mononen in ue5-main branch]
- added class picker style new node picker with search box and categories
#rb Mieszko.Zielinski
#preflight 63be76206e6e8d4662c637fb
[CL 23643504 by mikko mononen in ue5-main branch]
- Added global tasks which are run at tree level similar to evals (will replace evals)
- allows initial state selection to rely in calculated data (e.g. world conditions)
- allows better reuse of existing logic
- Call evaluator stop in reverse order
- Use some uses of mutable instanced structs
- Copy bindings along with ST nodes
- Remove bindings when removing a ST node, so that undo can restore them
#rb Yoan.StAmant
#preflight 63bd2c7968068a8bd6395d2c
[CL 23632408 by mikko mononen in ue5-main branch]
List of optimizations and changes:
* Token stream structure
* Split token stream into strong-only and a mixed (weak+strong) stream
* Split token stream into a builder and a tighter view class which reduces sizeof(UClass)
* Implemented ref-counted token stream view sharing
* Removed Class and Outer from token stream
* Allow empty token streams (enabled by removing Class/Outer) to avoid touching token stream data
* Placed ARO (AddReferencedObjects) last to reduce per object cache thrashing, improve control flow predicability and avoid reading the last EndOfPointer and EndOfStream tokens
* FPrefetchingObjectIterator that bring in Class/Outer, class' tokenstream view and the first token data ahead of time
* Decode token bitfield once and ahead of time
* Reference queues and batch processing
* Introduced bounded queues: ref arrays -> unvalidated refs -> validated (non-null / non-permanent) refs
* Split all these queues for killable vs immutable references
* Stack-living references still handled synchronously. With removal of Class/Outer (prefetched ahead of time) few instances remain outside of ARO calls.
* Outer queues hold 32 items and get flushed when full.
* AddReferencedObjects (ARO) optimizations
* Misc optimizations in many ARO implementations
* New FReferenceCollector API to queue up ARO references (AddStableReference), old sync API (HandleObjectReference) still available
* New AddPropertyReferences traversal that replaces SerializeBin and PropertyValueIterator
* 4.5x faster than PropertyValueIterator
* Uses CLASSCAST dispatch instead of virtual SerializeItem dispatch.
* Step towards new unified token stream replacement shared by class token processing, structs and ARO
* Replaced StructUtil::AddReferencedObjects with AddPropertyReferences traversal, ~8x speedup and collects more references for CitySample
* Parallelism
* Single long-running task per worker
* Improved work-stealing / load-balancing, workers can steal full blocks, ARO calls and initial references
* Queue up slow ARO calls to improve load balancing and avoid late stragglers. Motivated by certain ARO calls taking over 2ms for a few specific objects.
* Kick tasks manually to avoid ParallelFor end synchronization
* FGCObject
* Initial reference collector runs in parallel with mark phase
* New FGCObject constructor API (AddStableNativeReferencesOnly) to opt-in to initial reference collection, used by StreamableManager
* Same constructor API allows FGCObjects to defer registration until they become active (RegisterLater), reduces number of active GCObjects
* Reduced memory usage
* Allocate reached objects in scratch pages (FWorkBlock) and reuse processed blocks, instead of swapping two big TArray<UObject*> per worker
* Reduced sizeof(UClass)
* Shareable token streams
* Misc optimizations
* New API to test if an object is in the permanent object pool. Old API read two global pointers for every visited reference.
* Fixed signed integer usage in GUObjectArray lookup that led to bad codegen
* FPropertyIterator optimizations
* SerializeBin optimizations
* Other changes
* Moved many helpers into UE::GC namespace
* Replaced TFastReferenceCollector API with simplified CollectReferences call. Needed to break this API any way.
* Introduced FGCInternals to avoid forward-declaring TFastReferenceCollector and depend on the options enum in common headers
* Moved and outlined code from GarbageCollection.h / FastReferenceCollector.h to GarbageCollection.cpp
* Moved GC History and Garbage Reference Tracking into a synchronous TDebugReachabilityProcessor
* Removed PersistentGarbage flag since it wasn't used in practice
* Improved const correctness
#rb robert.millar,robert.manuszewski,pj.kack
#preflight 63945bf45624e6da5ec85f88
#jira UE-169791
[CL 23475562 by johan torp in ue5-main branch]
- cache event queue for the whole active duration of the nodes
- this allows events to be sent outside tick (e.g. from delegate callbacks)
#preflight 638deb98c0652bbec2df9368
[CL 23389834 by mikko mononen in ue5-main branch]
- Try to convert to latest version when duplicating data
- Convert property binding source/target classes to latest version on link
- Handle BP reference replace in instanced structs
#rb Mieszko.Zielinski
#preflight 638d97e0303395f6c97629fd
[CL 23387730 by mikko mononen in ue5-main branch]
- Removed gated delay (transition will be delayed until it has been "pressed" for N seconds)
- Delay now triggers after the delay duration has passed (single trigger, not "pressed", works with events too)
- Added random variation for the delay
- Tick/Event transitions has precedence over completion transitions (that is, they are handled before completion transitions)
- Removed delay and blocking from completion transitions
- Small improvements for transitions UI
#rb Mieszko.Zielinski
#preflight 6389e0b435192facc1b95cdb
[CL 23371519 by mikko mononen in ue5-main branch]
- Use hierarchical GamplayTag match when matchin transition event tags
- When returning succeed/failed fomr a subtree, handle it as if the linked state was completed
- Call Stop() before initializing the instance data on Start() to avoid the instance data to be overritten by Stop()
- Early out Stop() if the tree is not running
- Fixed failed transition not setting OutTransition.CurrentActiveStates correctly
#preflight 637e12ee8b12eb83a71bb694
[CL 23248889 by mikko mononen in ue5-main branch]
- record the first completed state on EnterState() and TickTasks()
- returning succeeded on any node in EnterState() now behaves the same as returning succeeded on Tick()
#rb Mieszko.Zielinski
#preflight 637caf2df514e1ded9f280e4
[CL 23233890 by mikko mononen in ue5-main branch]
- Added explicit bShouldCallTick and not make the tick based on of the event is implemented
- This fixes the cases where we are using the BP task class to implement UObject based tasks in C++
#preflight 637c9ea3170bc34a9370bb0b
[CL 23233007 by mikko mononen in ue5-main branch]
- Added a pass during compilation when node and instance data can be checked and adjusted by the node
- Changed blueprint based task to copy flags to the node in Compile()
- Changed relevant gameplay interaction tasks to check tags during Compile()
#rb Mieszko.Zielinski
#preflight 6377724cf514e1ded9a5ff44
[CL 23193668 by mikko mononen in ue5-main branch]
