1509 lines
51 KiB
C++
1509 lines
51 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "StateTree.h"
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#include "Misc/PackageName.h"
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#include "StateTreeLinker.h"
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#include "StateTreeTaskBase.h"
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#include "StateTreeEvaluatorBase.h"
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#include "StateTreeConditionBase.h"
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#include "StateTreeConsiderationBase.h"
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#include "AssetRegistry/AssetData.h"
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#include "Misc/ScopeRWLock.h"
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#include "StateTreeDelegates.h"
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#include "Logging/LogScopedVerbosityOverride.h"
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#include "Misc/DataValidation.h"
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#include "Misc/EnumerateRange.h"
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#include "UObject/AssetRegistryTagsContext.h"
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#include "StateTreePropertyFunctionBase.h"
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#include "AutoRTFM.h"
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#include <atomic>
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#if WITH_EDITOR
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#include "Editor.h"
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#include "StateTreeModuleImpl.h"
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#include "StructUtils/UserDefinedStruct.h"
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#include "Templates/GuardValueAccessors.h"
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#include "UObject/LinkerLoad.h"
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#endif
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#include UE_INLINE_GENERATED_CPP_BY_NAME(StateTree)
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const FGuid FStateTreeCustomVersion::GUID(0x28E21331, 0x501F4723, 0x8110FA64, 0xEA10DA1E);
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namespace UE::StateTree::Private
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{
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FCustomVersionRegistration GRegisterStateTreeCustomVersion(FStateTreeCustomVersion::GUID, FStateTreeCustomVersion::LatestVersion, TEXT("StateTreeAsset"));
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}
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bool UStateTree::IsReadyToRun() const
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{
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// Valid tree must have at least one state and valid instance data.
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return States.Num() > 0 && bIsLinked && PropertyBindings.IsValid();
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}
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FConstStructView UStateTree::GetNode(const int32 NodeIndex) const
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{
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return Nodes.IsValidIndex(NodeIndex) ? Nodes[NodeIndex] : FConstStructView();
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}
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FStateTreeIndex16 UStateTree::GetNodeIndexFromId(const FGuid Id) const
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{
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const FStateTreeNodeIdToIndex* Entry = IDToNodeMappings.FindByPredicate([Id](const FStateTreeNodeIdToIndex& Entry){ return Entry.Id == Id; });
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return Entry != nullptr ? Entry->Index : FStateTreeIndex16::Invalid;
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}
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FGuid UStateTree::GetNodeIdFromIndex(const FStateTreeIndex16 NodeIndex) const
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{
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const FStateTreeNodeIdToIndex* Entry = NodeIndex.IsValid()
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? IDToNodeMappings.FindByPredicate([NodeIndex](const FStateTreeNodeIdToIndex& Entry){ return Entry.Index == NodeIndex; })
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: nullptr;
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return Entry != nullptr ? Entry->Id : FGuid();
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}
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const FCompactStateTreeFrame* UStateTree::GetFrameFromHandle(const FStateTreeStateHandle StateHandle) const
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{
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return Frames.FindByPredicate([StateHandle](const FCompactStateTreeFrame& Frame)
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{
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return Frame.RootState == StateHandle;
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});
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}
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const FCompactStateTreeState* UStateTree::GetStateFromHandle(const FStateTreeStateHandle StateHandle) const
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{
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return States.IsValidIndex(StateHandle.Index) ? &States[StateHandle.Index] : nullptr;
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}
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FStateTreeStateHandle UStateTree::GetStateHandleFromId(const FGuid Id) const
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{
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const FStateTreeStateIdToHandle* Entry = IDToStateMappings.FindByPredicate([Id](const FStateTreeStateIdToHandle& Entry){ return Entry.Id == Id; });
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return Entry != nullptr ? Entry->Handle : FStateTreeStateHandle::Invalid;
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}
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FGuid UStateTree::GetStateIdFromHandle(const FStateTreeStateHandle Handle) const
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{
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const FStateTreeStateIdToHandle* Entry = IDToStateMappings.FindByPredicate([Handle](const FStateTreeStateIdToHandle& Entry){ return Entry.Handle == Handle; });
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return Entry != nullptr ? Entry->Id : FGuid();
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}
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const FCompactStateTransition* UStateTree::GetTransitionFromIndex(const FStateTreeIndex16 TransitionIndex) const
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{
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return TransitionIndex.IsValid() && Transitions.IsValidIndex(TransitionIndex.Get()) ? &Transitions[TransitionIndex.Get()] : nullptr;
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}
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FStateTreeIndex16 UStateTree::GetTransitionIndexFromId(const FGuid Id) const
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{
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const FStateTreeTransitionIdToIndex* Entry = IDToTransitionMappings.FindByPredicate([Id](const FStateTreeTransitionIdToIndex& Entry){ return Entry.Id == Id; });
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return Entry != nullptr ? Entry->Index : FStateTreeIndex16::Invalid;
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}
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FGuid UStateTree::GetTransitionIdFromIndex(const FStateTreeIndex16 Index) const
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{
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const FStateTreeTransitionIdToIndex* Entry = IDToTransitionMappings.FindByPredicate([Index](const FStateTreeTransitionIdToIndex& Entry){ return Entry.Index == Index; });
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return Entry != nullptr ? Entry->Id : FGuid();
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}
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UE_AUTORTFM_ALWAYS_OPEN
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static int32 GetThreadIndexForSharedInstanceData()
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{
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// Create a unique index for each thread.
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static std::atomic_int ThreadIndexCounter {0};
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static thread_local int32 ThreadIndex = INDEX_NONE; // Cannot init directly on WinRT
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if (ThreadIndex == INDEX_NONE)
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{
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ThreadIndex = ThreadIndexCounter.fetch_add(1);
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}
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return ThreadIndex;
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}
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TSharedPtr<FStateTreeInstanceData> UStateTree::GetSharedInstanceData() const
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{
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int32 ThreadIndex = GetThreadIndexForSharedInstanceData();
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// If shared instance data for this thread exists, return it.
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{
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UE::TReadScopeLock ReadLock(PerThreadSharedInstanceDataLock);
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if (ThreadIndex < PerThreadSharedInstanceData.Num())
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{
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return PerThreadSharedInstanceData[ThreadIndex];
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}
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}
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// Not initialized yet, create new instances up to the index.
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UE::TWriteScopeLock WriteLock(PerThreadSharedInstanceDataLock);
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// It is possible that multiple threads are waiting for the write lock,
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// which means that execution may get here so that 'ThreadIndex' is already in valid range.
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// The loop below is organized to handle that too.
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const int32 NewNum = ThreadIndex + 1;
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PerThreadSharedInstanceData.Reserve(NewNum);
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UStateTree* NonConstThis = const_cast<UStateTree*>(this);
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for (int32 Index = PerThreadSharedInstanceData.Num(); Index < NewNum; Index++)
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{
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TSharedPtr<FStateTreeInstanceData> SharedData = MakeShared<FStateTreeInstanceData>();
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SharedData->CopyFrom(*NonConstThis, SharedInstanceData);
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PerThreadSharedInstanceData.Add(SharedData);
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}
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return PerThreadSharedInstanceData[ThreadIndex];
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}
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bool UStateTree::HasCompatibleContextData(const UStateTree& Other) const
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{
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if (ContextDataDescs.Num() != Other.ContextDataDescs.Num())
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{
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return false;
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}
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const int32 Num = ContextDataDescs.Num();
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for (int32 Index = 0; Index < Num; Index++)
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{
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const FStateTreeExternalDataDesc& Desc = ContextDataDescs[Index];
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const FStateTreeExternalDataDesc& OtherDesc = Other.ContextDataDescs[Index];
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if (!OtherDesc.Struct
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|| !OtherDesc.Struct->IsChildOf(Desc.Struct))
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{
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return false;
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}
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}
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return true;
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}
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#if WITH_EDITOR
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namespace UE::StateTree::Compiler
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{
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void RenameObjectToTransientPackage(UObject* ObjectToRename)
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{
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const ERenameFlags RenFlags = REN_DoNotDirty | REN_DontCreateRedirectors;
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ObjectToRename->SetFlags(RF_Transient);
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ObjectToRename->ClearFlags(RF_Public | RF_Standalone | RF_ArchetypeObject);
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// Rename will remove the renamed object's linker when moving to a new package so invalidate the export beforehand
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FLinkerLoad::InvalidateExport(ObjectToRename);
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ObjectToRename->Rename(nullptr, GetTransientPackage(), RenFlags);
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}
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}
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void UStateTree::ResetCompiled()
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{
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Schema = nullptr;
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Frames.Reset();
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States.Reset();
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Transitions.Reset();
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Nodes.Reset();
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DefaultInstanceData.Reset();
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SharedInstanceData.Reset();
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ContextDataDescs.Reset();
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PropertyBindings.Reset();
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Parameters.Reset();
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ParameterDataType = EStateTreeParameterDataType::GlobalParameterData;
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IDToStateMappings.Reset();
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IDToNodeMappings.Reset();
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IDToTransitionMappings.Reset();
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EvaluatorsBegin = 0;
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EvaluatorsNum = 0;
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GlobalTasksBegin = 0;
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GlobalTasksNum = 0;
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bHasGlobalTransitionTasks = false;
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bHasGlobalTickTasks = false;
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bHasGlobalTickTasksOnlyOnEvents = false;
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bCachedRequestGlobalTick = false;
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bCachedRequestGlobalTickOnlyOnEvents = false;
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bScheduledTickAllowed = false;
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ResetLinked();
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// Remove objects created from last compilation.
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{
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TArray<UObject*, TInlineAllocator<32>> Children;
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const bool bIncludeNestedObjects = false;
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ForEachObjectWithOuter(this, [&Children, EditorData = EditorData.Get()](UObject* Child)
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{
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if (Child != EditorData)
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{
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Children.Add(Child);
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}
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}, bIncludeNestedObjects);
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for (UObject* Child : Children)
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{
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UE::StateTree::Compiler::RenameObjectToTransientPackage(Child);
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}
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}
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}
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void UStateTree::OnObjectsReinstanced(const FReplacementObjectMap& ObjectMap)
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{
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if (ObjectMap.IsEmpty())
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{
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return;
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}
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bool bShouldRelink = false;
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// Relink if one of the out of date objects got reinstanced.
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if (OutOfDateStructs.Num() > 0)
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{
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for (FObjectKey OutOfDateObjectKey : OutOfDateStructs)
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{
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if (const UObject* OutOfDateObject = OutOfDateObjectKey.ResolveObjectPtr())
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{
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if (ObjectMap.Contains(OutOfDateObject))
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{
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bShouldRelink = true;
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break;
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}
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}
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}
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}
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// If the asset is not linked yet (or has failed), no need to link.
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if (!bShouldRelink && !bIsLinked)
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{
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return;
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}
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// Relink only if the reinstantiated object belongs to this asset,
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// or anything from the property binding refers to the classes of the reinstantiated object.
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if (!bShouldRelink)
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{
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for (TMap<UObject*, UObject*>::TConstIterator It(ObjectMap); It; ++It)
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{
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if (const UObject* ObjectToBeReplaced = It->Value)
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{
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if (ObjectToBeReplaced->IsInOuter(this))
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{
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bShouldRelink = true;
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break;
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}
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}
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}
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}
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if (!bShouldRelink)
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{
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TSet<const UStruct*> Structs;
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for (TMap<UObject*, UObject*>::TConstIterator It(ObjectMap); It; ++It)
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{
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if (const UObject* ObjectToBeReplaced = It->Value)
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{
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// It's a UClass or a UScriptStruct
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if (const UStruct* StructToReplaced = Cast<const UStruct>(ObjectToBeReplaced))
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{
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Structs.Add(StructToReplaced);
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}
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else
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{
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Structs.Add(ObjectToBeReplaced->GetClass());
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}
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}
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}
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bShouldRelink |= PropertyBindings.ContainsAnyStruct(Structs);
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}
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if (bShouldRelink)
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{
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if (!Link())
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{
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UE_LOG(LogStateTree, Error, TEXT("%s failed to link after Object reinstantiation. Take a look at the asset for any errors. Asset will not be usable at runtime."), *GetPathName());
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}
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}
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}
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void UStateTree::OnUserDefinedStructReinstanced(const UUserDefinedStruct& UserDefinedStruct)
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{
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// Struct utils handle reinstancing the struct values (instanced struct, property bag, etc).
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// We will need to update the property binding.
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TSet<const UStruct*> Structs;
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Structs.Add(&UserDefinedStruct);
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if (PropertyBindings.ContainsAnyStruct(Structs))
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{
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if (!Link())
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{
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UE_LOG(LogStateTree, Error, TEXT("%s failed to link after Struct reinstantiation. Take a look at the asset for any errors. Asset will not be usable at runtime."), *GetPathName());
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}
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}
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}
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void UStateTree::PostInitProperties()
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{
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Super::PostInitProperties();
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if (!HasAnyFlags(RF_ClassDefaultObject))
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{
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OnObjectsReinstancedHandle = FStateTreeModule::OnObjectsReinstanced.AddUObject(this, &UStateTree::OnObjectsReinstanced);
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OnUserDefinedStructReinstancedHandle = FStateTreeModule::OnUserDefinedStructReinstanced.AddUObject(this, &UStateTree::OnUserDefinedStructReinstanced);
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OnPreBeginPIEHandle = FStateTreeModule::OnPreBeginPIE.AddUObject(this, &UStateTree::OnPreBeginPIE);
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}
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}
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void UStateTree::BeginDestroy()
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{
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FStateTreeModule::OnObjectsReinstanced.Remove(OnObjectsReinstancedHandle);
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FStateTreeModule::OnUserDefinedStructReinstanced.Remove(OnUserDefinedStructReinstancedHandle);
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FStateTreeModule::OnPreBeginPIE.Remove(OnPreBeginPIEHandle);
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Super::BeginDestroy();
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}
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void UStateTree::PostDuplicate(EDuplicateMode::Type DuplicateMode)
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{
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Super::PostDuplicate(DuplicateMode);
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ResetCompiled();
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}
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void UStateTree::GetAssetRegistryTags(FAssetRegistryTagsContext Context) const
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{
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const FString SchemaClassName = Schema ? Schema->GetClass()->GetPathName() : TEXT("");
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Context.AddTag(FAssetRegistryTag(UE::StateTree::SchemaTag, SchemaClassName, FAssetRegistryTag::TT_Alphabetical));
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if (Schema)
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{
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Schema->GetAssetRegistryTags(Context);
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}
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Super::GetAssetRegistryTags(Context);
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}
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void UStateTree::ThreadedPostLoadAssetRegistryTagsOverride(FPostLoadAssetRegistryTagsContext& Context) const
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{
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Super::ThreadedPostLoadAssetRegistryTagsOverride(Context);
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static const FName SchemaTag(TEXT("Schema"));
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const FString SchemaTagValue = Context.GetAssetData().GetTagValueRef<FString>(SchemaTag);
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if (!SchemaTagValue.IsEmpty() && FPackageName::IsShortPackageName(SchemaTagValue))
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{
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const FTopLevelAssetPath SchemaTagClassPathName = UClass::TryConvertShortTypeNameToPathName<UStruct>(SchemaTagValue, ELogVerbosity::Warning, TEXT("UStateTree::ThreadedPostLoadAssetRegistryTagsOverride"));
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if (!SchemaTagClassPathName.IsNull())
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{
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Context.AddTagToUpdate(FAssetRegistryTag(SchemaTag, SchemaTagClassPathName.ToString(), FAssetRegistryTag::TT_Alphabetical));
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}
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}
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}
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EDataValidationResult UStateTree::IsDataValid(FDataValidationContext& Context) const
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{
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// Don't warn user that the tree they just saved is not compiled. Only for submit or manual validation
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if (Context.GetValidationUsecase() != EDataValidationUsecase::Save)
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{
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if (UE::StateTree::Delegates::OnRequestEditorHash.IsBound())
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{
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const uint32 CurrentHash = UE::StateTree::Delegates::OnRequestEditorHash.Execute(*this);
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if (CurrentHash != LastCompiledEditorDataHash)
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{
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Context.AddWarning(FText::FromString(FString::Printf(TEXT("%s is not compiled. Please recompile the State Tree."), *GetPathName())));
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return EDataValidationResult::Invalid;
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}
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}
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}
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if (!const_cast<UStateTree*>(this)->Link())
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{
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Context.AddError(FText::FromString(FString::Printf(TEXT("%s failed to link. Please recompile the State Tree for more details errors."), *GetPathName())));
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return EDataValidationResult::Invalid;
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}
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return Super::IsDataValid(Context);
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}
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#endif // WITH_EDITOR
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void UStateTree::AddReferencedObjects(UObject* InThis, FReferenceCollector& Collector)
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{
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Super::AddReferencedObjects(InThis, Collector);
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const UStateTree* StateTree = Cast<UStateTree>(InThis);
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check(StateTree);
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UE::TReadScopeLock ReadLock(StateTree->PerThreadSharedInstanceDataLock);
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for (const TSharedPtr<FStateTreeInstanceData>& InstanceData : StateTree->PerThreadSharedInstanceData)
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{
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if (InstanceData.IsValid())
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{
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Collector.AddPropertyReferencesWithStructARO(FStateTreeInstanceData::StaticStruct(), InstanceData.Get(), StateTree);
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}
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}
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}
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void UStateTree::PostLoad()
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{
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Super::PostLoad();
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for (int32 NodeIndex = 0; NodeIndex < Nodes.Num(); ++NodeIndex)
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{
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FStructView NodeView = Nodes[NodeIndex];
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if (FStateTreeNodeBase* Node = NodeView.GetPtr<FStateTreeNodeBase>())
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{
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if (Node->InstanceTemplateIndex.IsValid())
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{
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const bool bIsUsingSharedInstanceData = NodeView.GetScriptStruct()->IsChildOf<FStateTreeConditionBase>()
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|| NodeView.GetScriptStruct()->IsChildOf<FStateTreeConsiderationBase>()
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|| NodeView.GetScriptStruct()->IsChildOf<FStateTreePropertyFunctionBase>();
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FStateTreeInstanceData& SourceInstanceData = bIsUsingSharedInstanceData ? SharedInstanceData : DefaultInstanceData;
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if (SourceInstanceData.IsObject(Node->InstanceTemplateIndex.Get()))
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{
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Node->PostLoad(SourceInstanceData.GetMutableObject(Node->InstanceTemplateIndex.Get()));
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}
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else
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{
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Node->PostLoad(SourceInstanceData.GetMutableStruct(Node->InstanceTemplateIndex.Get()));
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}
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}
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}
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}
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#if WITH_EDITOR
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if (EditorData)
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{
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// Make sure all the fix up logic in the editor data has had chance to happen.
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EditorData->ConditionalPostLoad();
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TGuardValueAccessors<bool> IsEditorLoadingPackageGuard(UE::GetIsEditorLoadingPackage, UE::SetIsEditorLoadingPackage, true);
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Compile();
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}
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#else
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const int32 CurrentVersion = GetLinkerCustomVersion(FStateTreeCustomVersion::GUID);
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if (CurrentVersion < FStateTreeCustomVersion::LatestVersion)
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{
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UE_LOG(LogStateTree, Error, TEXT("%s: compiled data is in older format. Please recompile the StateTree asset."), *GetPathName());
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return;
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}
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#endif
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if (!Link())
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{
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UE_LOG(LogStateTree, Log, TEXT("%s failed to link. Asset will not be usable at runtime."), *GetPathName());
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}
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}
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#if WITH_EDITORONLY_DATA
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void UStateTree::DeclareConstructClasses(TArray<FTopLevelAssetPath>& OutConstructClasses, const UClass* SpecificSubclass)
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{
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Super::DeclareConstructClasses(OutConstructClasses, SpecificSubclass);
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TArray<UClass*> SchemaClasses;
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GetDerivedClasses(UStateTreeSchema::StaticClass(), SchemaClasses);
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for (UClass* SchemaClass : SchemaClasses)
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{
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if (!SchemaClass->HasAnyClassFlags(CLASS_Abstract | CLASS_Transient))
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{
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OutConstructClasses.Add(FTopLevelAssetPath(SchemaClass));
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}
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}
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}
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#endif
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|
|
void UStateTree::Serialize(const FStructuredArchiveRecord Record)
|
|
{
|
|
Super::Serialize(Record);
|
|
|
|
Record.GetUnderlyingArchive().UsingCustomVersion(FStateTreeCustomVersion::GUID);
|
|
|
|
// We need to link and rebind property bindings each time a BP is compiled,
|
|
// because property bindings may get invalid, and instance data potentially needs refreshed.
|
|
if (Record.GetUnderlyingArchive().IsModifyingWeakAndStrongReferences())
|
|
{
|
|
if (!Link() && !HasAnyFlags(RF_ClassDefaultObject))
|
|
{
|
|
UE_LOG(LogStateTree, Log, TEXT("%s failed to link. Asset will not be usable at runtime."), *GetName());
|
|
}
|
|
}
|
|
}
|
|
|
|
void UStateTree::ResetLinked()
|
|
{
|
|
bIsLinked = false;
|
|
ExternalDataDescs.Reset();
|
|
|
|
#if WITH_EDITOR
|
|
OutOfDateStructs.Reset();
|
|
#endif
|
|
|
|
UE::TWriteScopeLock WriteLock(PerThreadSharedInstanceDataLock);
|
|
PerThreadSharedInstanceData.Reset();
|
|
}
|
|
|
|
bool UStateTree::ValidateInstanceData()
|
|
{
|
|
bool bResult = true;
|
|
for (FConstStructView NodeView : Nodes)
|
|
{
|
|
const FStateTreeNodeBase* Node = NodeView.GetPtr<const FStateTreeNodeBase>();
|
|
if (Node && Node->InstanceTemplateIndex.IsValid())
|
|
{
|
|
const UStruct* CurrentInstanceDataType = nullptr;
|
|
{
|
|
const bool bUseSharedInstanceData = NodeView.GetPtr<const FStateTreeConditionBase>() || NodeView.GetPtr<const FStateTreeConsiderationBase>() || NodeView.GetPtr<const FStateTreePropertyFunctionBase>();
|
|
const FStateTreeInstanceData& SourceInstanceData = bUseSharedInstanceData ? SharedInstanceData : DefaultInstanceData;
|
|
if (SourceInstanceData.IsObject(Node->InstanceTemplateIndex.Get()))
|
|
{
|
|
const UObject* InstanceObject = SourceInstanceData.GetObject(Node->InstanceTemplateIndex.Get());
|
|
CurrentInstanceDataType = InstanceObject ? InstanceObject->GetClass() : nullptr;
|
|
}
|
|
else
|
|
{
|
|
CurrentInstanceDataType = SourceInstanceData.GetStruct(Node->InstanceTemplateIndex.Get()).GetScriptStruct();
|
|
}
|
|
}
|
|
|
|
if (CurrentInstanceDataType == nullptr)
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: node '%s' failed. Missing instance value, possibly due to Blueprint class or C++ class/struct template deletion."), *GetPathName(), *WriteToString<64>(Node->StaticStruct()->GetFName()));
|
|
|
|
bResult = false;
|
|
continue;
|
|
}
|
|
|
|
auto HasNewerVersionExists = [](const UStruct* InstanceDataType)
|
|
{
|
|
// Is the class/scriptstruct a blueprint that got replaced by another class.
|
|
bool bHasNewerVersionExists = InstanceDataType->HasAnyFlags(RF_NewerVersionExists);
|
|
if (!bHasNewerVersionExists)
|
|
{
|
|
if (const UClass* InstanceDataClass = Cast<UClass>(InstanceDataType))
|
|
{
|
|
bHasNewerVersionExists = InstanceDataClass->HasAnyClassFlags(CLASS_NewerVersionExists);
|
|
}
|
|
else if (const UScriptStruct* InstanceDataStruct = Cast<UScriptStruct>(InstanceDataType))
|
|
{
|
|
bHasNewerVersionExists = (InstanceDataStruct->StructFlags & STRUCT_NewerVersionExists) != 0;
|
|
}
|
|
}
|
|
return bHasNewerVersionExists;
|
|
};
|
|
|
|
if (HasNewerVersionExists(CurrentInstanceDataType))
|
|
{
|
|
bool bLogError = true;
|
|
#if WITH_EDITOR
|
|
OutOfDateStructs.Add(CurrentInstanceDataType);
|
|
bLogError = false;
|
|
#endif
|
|
|
|
if (bLogError)
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: node '%s' failed. The source Instance Data type '%s' has a newer version."), *GetPathName(), *WriteToString<64>(Node->StaticStruct()->GetFName()), *WriteToString<64>(CurrentInstanceDataType->GetFName()));
|
|
}
|
|
|
|
bResult = false;
|
|
}
|
|
|
|
{
|
|
const UStruct* DesiredInstanceDataType = Node->GetInstanceDataType();
|
|
// The FMyInstance::StaticStruct doesn't get a notification like the other objects when reinstanced.
|
|
const bool bDesiredHasNewerVersion = HasNewerVersionExists(DesiredInstanceDataType);
|
|
|
|
// Use strict testing so that the users will have option to initialize data mismatch if the type changes (even if potentially compatible).
|
|
if (CurrentInstanceDataType != DesiredInstanceDataType
|
|
&& !bDesiredHasNewerVersion)
|
|
{
|
|
bool bLogError = true;
|
|
#if WITH_EDITOR
|
|
const UClass* CurrentInstanceDataClass = Cast<UClass>(CurrentInstanceDataType);
|
|
const UClass* DesiredInstanceDataClass = Cast<UClass>(DesiredInstanceDataType);
|
|
if (CurrentInstanceDataClass && DesiredInstanceDataClass)
|
|
{
|
|
// Because of the loading order. It's possible that the OnObjectsReinstanced did not completed.
|
|
if (CurrentInstanceDataClass->ClassGeneratedBy == DesiredInstanceDataClass->ClassGeneratedBy)
|
|
{
|
|
OutOfDateStructs.Add(CurrentInstanceDataType);
|
|
bLogError = false;
|
|
}
|
|
}
|
|
#endif
|
|
if (bLogError)
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: node '%s' failed. The source Instance Data type '%s' does not match '%s'"), *GetPathName(), *WriteToString<64>(Node->StaticStruct()->GetFName()), *GetNameSafe(CurrentInstanceDataType), *GetNameSafe(DesiredInstanceDataType));
|
|
}
|
|
bResult = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return bResult;
|
|
}
|
|
|
|
bool UStateTree::Link()
|
|
{
|
|
// Initialize the instance data default value.
|
|
// This data will be used to allocate runtime instance on all StateTree users.
|
|
ResetLinked();
|
|
|
|
// Validate that all the source instance data types matches the node instance data types
|
|
if (!ValidateInstanceData())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (States.Num() > 0 && Nodes.Num() > 0)
|
|
{
|
|
// Check that all nodes are valid.
|
|
for (FConstStructView Node : Nodes)
|
|
{
|
|
if (!Node.IsValid())
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: State Tree asset was not properly loaded (missing node). See log for loading failures, or recompile the StateTree asset."), *GetPathName());
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Resolves nodes references to other StateTree data
|
|
{
|
|
FStateTreeLinker Linker(Schema);
|
|
|
|
for (int32 Index = 0; Index < Nodes.Num(); Index++)
|
|
{
|
|
FStructView Node = Nodes[Index];
|
|
FStateTreeNodeBase* NodePtr = Node.GetPtr<FStateTreeNodeBase>();
|
|
if (ensure(NodePtr))
|
|
{
|
|
const bool bLinkSucceeded = NodePtr->Link(Linker);
|
|
if (!bLinkSucceeded || Linker.GetStatus() == EStateTreeLinkerStatus::Failed)
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: node '%s' failed to resolve its references."), *GetPathName(), *NodePtr->StaticStruct()->GetName());
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Schema)
|
|
{
|
|
const bool bSchemaLinkSucceeded = Schema->Link(Linker);
|
|
if (!bSchemaLinkSucceeded || Linker.GetStatus() == EStateTreeLinkerStatus::Failed)
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: schema failed to resolve its references."), *GetPathName());
|
|
return false;
|
|
}
|
|
}
|
|
|
|
ExternalDataDescs = Linker.GetExternalDataDescs();
|
|
}
|
|
|
|
UpdateRuntimeFlags();
|
|
|
|
if (!DefaultInstanceData.AreAllInstancesValid())
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: State Tree asset was not properly loaded (missing instance data). See log for loading failures, or recompile the StateTree asset."), *GetPathName());
|
|
return false;
|
|
}
|
|
|
|
if (!SharedInstanceData.AreAllInstancesValid())
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: State Tree asset was not properly loaded (missing shared instance data). See log for loading failures, or recompile the StateTree asset."), *GetPathName());
|
|
return false;
|
|
}
|
|
|
|
if (!PatchBindings())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Resolves property paths used by bindings a store property pointers
|
|
if (!PropertyBindings.ResolvePaths())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Link succeeded, setup tree to be ready to run
|
|
bIsLinked = true;
|
|
|
|
return true;
|
|
}
|
|
|
|
void UStateTree::UpdateRuntimeFlags()
|
|
{
|
|
// Set the tick flags at runtime instead of compilation.
|
|
//This is to support hotfix (when we only modify cpp code).
|
|
|
|
for (FCompactStateTreeState& State : States)
|
|
{
|
|
// Update the state task flags.
|
|
State.bHasTickTasks = false;
|
|
State.bHasTickTasksOnlyOnEvents = false;
|
|
State.bHasTransitionTasks = false;
|
|
State.bCachedRequestTick = false;
|
|
State.bCachedRequestTickOnlyOnEvents = false;
|
|
for (int32 TaskIndex = State.TasksBegin; TaskIndex < (State.TasksBegin + State.TasksNum); ++TaskIndex)
|
|
{
|
|
const FStateTreeTaskBase& Task = Nodes[TaskIndex].Get<const FStateTreeTaskBase>();
|
|
if (Task.bTaskEnabled)
|
|
{
|
|
State.bHasTickTasks |= Task.bShouldCallTick;
|
|
State.bHasTickTasksOnlyOnEvents |= Task.bShouldCallTickOnlyOnEvents;
|
|
State.bHasTransitionTasks |= Task.bShouldAffectTransitions;
|
|
if (Task.bConsideredForScheduling)
|
|
{
|
|
State.bCachedRequestTick |= Task.bShouldCallTick || Task.bShouldAffectTransitions;
|
|
State.bCachedRequestTickOnlyOnEvents |= Task.bShouldCallTickOnlyOnEvents;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Update the global task flags.
|
|
{
|
|
bHasGlobalTickTasks = false;
|
|
bHasGlobalTickTasksOnlyOnEvents = false;
|
|
bHasGlobalTransitionTasks = false;
|
|
bCachedRequestGlobalTick = false;
|
|
bCachedRequestGlobalTickOnlyOnEvents = false;
|
|
for (int32 TaskIndex = GlobalTasksBegin; TaskIndex < (GlobalTasksBegin + GlobalTasksNum); ++TaskIndex)
|
|
{
|
|
const FStateTreeTaskBase& Task = Nodes[TaskIndex].Get<const FStateTreeTaskBase>();
|
|
if (Task.bTaskEnabled)
|
|
{
|
|
bHasGlobalTickTasks |= Task.bShouldCallTick;
|
|
bHasGlobalTickTasksOnlyOnEvents |= Task.bShouldCallTickOnlyOnEvents;
|
|
bHasGlobalTransitionTasks |= Task.bShouldAffectTransitions;
|
|
if (Task.bConsideredForScheduling)
|
|
{
|
|
bCachedRequestGlobalTick |= Task.bShouldCallTick || Task.bShouldAffectTransitions;
|
|
bCachedRequestGlobalTickOnlyOnEvents |= Task.bShouldCallTickOnlyOnEvents;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bScheduledTickAllowed = Schema ? Schema->IsScheduledTickAllowed() : false;
|
|
}
|
|
|
|
bool UStateTree::PatchBindings()
|
|
{
|
|
const TArrayView<FStateTreeBindableStructDesc> SourceStructs = PropertyBindings.SourceStructs;
|
|
TArrayView<FPropertyBindingCopyInfoBatch> CopyBatches = PropertyBindings.GetMutableCopyBatches();
|
|
const TArrayView<FStateTreePropertyPathBinding> PropertyPathBindings = PropertyBindings.PropertyPathBindings;
|
|
|
|
// Make mapping from data handle to source struct.
|
|
TMap<FStateTreeDataHandle, int32> SourceStructByHandle;
|
|
for (TConstEnumerateRef<FStateTreeBindableStructDesc> SourceStruct : EnumerateRange(SourceStructs))
|
|
{
|
|
SourceStructByHandle.Add(SourceStruct->DataHandle, SourceStruct.GetIndex());
|
|
}
|
|
|
|
auto GetSourceStructByHandle = [&SourceStructByHandle, &SourceStructs](const FStateTreeDataHandle DataHandle) -> FStateTreeBindableStructDesc*
|
|
{
|
|
if (int32* Index = SourceStructByHandle.Find(DataHandle))
|
|
{
|
|
return &SourceStructs[*Index];
|
|
}
|
|
return nullptr;
|
|
};
|
|
|
|
// Reconcile out of date classes.
|
|
for (FStateTreeBindableStructDesc& SourceStruct : SourceStructs)
|
|
{
|
|
if (const UClass* SourceClass = Cast<UClass>(SourceStruct.Struct))
|
|
{
|
|
if (SourceClass->HasAnyClassFlags(CLASS_NewerVersionExists))
|
|
{
|
|
SourceStruct.Struct = SourceClass->GetAuthoritativeClass();
|
|
}
|
|
}
|
|
}
|
|
for (FPropertyBindingCopyInfoBatch& CopyBatch : CopyBatches)
|
|
{
|
|
if (const UClass* TargetClass = Cast<UClass>(CopyBatch.TargetStruct.Get().Struct))
|
|
{
|
|
if (TargetClass->HasAnyClassFlags(CLASS_NewerVersionExists))
|
|
{
|
|
CopyBatch.TargetStruct.GetMutable<>().Struct = TargetClass->GetAuthoritativeClass();
|
|
}
|
|
}
|
|
}
|
|
|
|
auto PatchPropertyPath = [](FPropertyBindingPath& PropertyPath)
|
|
{
|
|
for (FPropertyBindingPathSegment& Segment : PropertyPath.GetMutableSegments())
|
|
{
|
|
if (const UClass* InstanceStruct = Cast<UClass>(Segment.GetInstanceStruct()))
|
|
{
|
|
if (InstanceStruct->HasAnyClassFlags(CLASS_NewerVersionExists))
|
|
{
|
|
Segment.SetInstanceStruct(InstanceStruct->GetAuthoritativeClass());
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
for (FStateTreePropertyPathBinding& PropertyPathBinding : PropertyPathBindings)
|
|
{
|
|
PatchPropertyPath(PropertyPathBinding.GetMutableSourcePath());
|
|
PatchPropertyPath(PropertyPathBinding.GetMutableTargetPath());
|
|
}
|
|
|
|
// Update property bag structs before resolving binding.
|
|
const EStateTreeDataSourceType GlobalParameterDataType = UE::StateTree::CastToDataSourceType(ParameterDataType);
|
|
if (FStateTreeBindableStructDesc* RootParamsDesc = GetSourceStructByHandle(FStateTreeDataHandle(GlobalParameterDataType)))
|
|
{
|
|
RootParamsDesc->Struct = Parameters.GetPropertyBagStruct();
|
|
}
|
|
|
|
// Refresh state parameter descs and bindings batches.
|
|
for (const FCompactStateTreeState& State : States)
|
|
{
|
|
// For subtrees and linked states, the parameters must exists.
|
|
if (State.Type == EStateTreeStateType::Subtree
|
|
|| State.Type == EStateTreeStateType::Linked
|
|
|| State.Type == EStateTreeStateType::LinkedAsset)
|
|
{
|
|
if (!State.ParameterTemplateIndex.IsValid())
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: Data for state '%s' is malformed. Please recompile the StateTree asset."), *GetPathName(), *State.Name.ToString());
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (State.ParameterTemplateIndex.IsValid())
|
|
{
|
|
// Subtree is a bind source, update bag struct.
|
|
const FCompactStateTreeParameters& Params = DefaultInstanceData.GetMutableStruct(State.ParameterTemplateIndex.Get()).Get<FCompactStateTreeParameters>();
|
|
FStateTreeBindableStructDesc* Desc = GetSourceStructByHandle(State.ParameterDataHandle);
|
|
if (!Desc)
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: Data for state '%s' is malformed. Please recompile the StateTree asset."), *GetPathName(), *State.Name.ToString());
|
|
return false;
|
|
}
|
|
Desc->Struct = Params.Parameters.GetPropertyBagStruct();
|
|
|
|
if (State.ParameterBindingsBatch.IsValid())
|
|
{
|
|
FPropertyBindingCopyInfoBatch& Batch = CopyBatches[State.ParameterBindingsBatch.Get()];
|
|
Batch.TargetStruct.GetMutable().Struct = Params.Parameters.GetPropertyBagStruct();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check linked state property bags consistency
|
|
for (const FCompactStateTreeState& State : States)
|
|
{
|
|
if (State.Type == EStateTreeStateType::Linked && State.LinkedState.IsValid())
|
|
{
|
|
const FCompactStateTreeState& LinkedState = States[State.LinkedState.Index];
|
|
|
|
if (State.ParameterTemplateIndex.IsValid() == false
|
|
|| LinkedState.ParameterTemplateIndex.IsValid() == false)
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: Data for state '%s' is malformed. Please recompile the StateTree asset."), *GetPathName(), *State.Name.ToString());
|
|
return false;
|
|
}
|
|
|
|
// Check that the bag in linked state matches.
|
|
const FCompactStateTreeParameters& Params = DefaultInstanceData.GetMutableStruct(State.ParameterTemplateIndex.Get()).Get<FCompactStateTreeParameters>();
|
|
const FCompactStateTreeParameters& LinkedStateParams = DefaultInstanceData.GetMutableStruct(LinkedState.ParameterTemplateIndex.Get()).Get<FCompactStateTreeParameters>();
|
|
|
|
if (LinkedStateParams.Parameters.GetPropertyBagStruct() != Params.Parameters.GetPropertyBagStruct())
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: The parameters on state '%s' does not match the linked state parameters in state '%s'. Please recompile the StateTree asset."), *GetPathName(), *State.Name.ToString(), *LinkedState.Name.ToString());
|
|
return false;
|
|
}
|
|
}
|
|
else if (State.Type == EStateTreeStateType::LinkedAsset && State.LinkedAsset)
|
|
{
|
|
// Check that the bag in linked state matches.
|
|
const FInstancedPropertyBag& TargetTreeParameters = State.LinkedAsset->Parameters;
|
|
const FCompactStateTreeParameters& Params = DefaultInstanceData.GetMutableStruct(State.ParameterTemplateIndex.Get()).Get<FCompactStateTreeParameters>();
|
|
|
|
if (TargetTreeParameters.GetPropertyBagStruct() != Params.Parameters.GetPropertyBagStruct())
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%s: The parameters on state '%s' does not match the linked asset parameters '%s'. Please recompile the StateTree asset."),
|
|
*GetPathName(), *State.Name.ToString(), *State.LinkedAsset->GetPathName());
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
TMap<FStateTreeDataHandle, FStateTreeDataView> DataViews;
|
|
TMap<FStateTreeIndex16, FStateTreeDataView> BindingBatchDataView;
|
|
|
|
// Tree parameters
|
|
DataViews.Add(FStateTreeDataHandle(GlobalParameterDataType), Parameters.GetMutableValue());
|
|
|
|
// Setup data views for context data. Since the external data is passed at runtime, we can only provide the type.
|
|
for (const FStateTreeExternalDataDesc& DataDesc : ContextDataDescs)
|
|
{
|
|
DataViews.Add(DataDesc.Handle.DataHandle, FStateTreeDataView(DataDesc.Struct, nullptr));
|
|
}
|
|
|
|
// Setup data views for state parameters.
|
|
for (FCompactStateTreeState& State : States)
|
|
{
|
|
if (State.ParameterDataHandle.IsValid())
|
|
{
|
|
FCompactStateTreeParameters& Params = DefaultInstanceData.GetMutableStruct(State.ParameterTemplateIndex.Get()).Get<FCompactStateTreeParameters>();
|
|
DataViews.Add(State.ParameterDataHandle, Params.Parameters.GetMutableValue());
|
|
if (State.ParameterBindingsBatch.IsValid())
|
|
{
|
|
BindingBatchDataView.Add(State.ParameterBindingsBatch, Params.Parameters.GetMutableValue());
|
|
}
|
|
}
|
|
}
|
|
|
|
// Setup data views for all nodes.
|
|
for (FConstStructView NodeView : Nodes)
|
|
{
|
|
const FStateTreeNodeBase& Node = NodeView.Get<const FStateTreeNodeBase>();
|
|
|
|
FStateTreeInstanceData* SourceInstanceData = &DefaultInstanceData;
|
|
if (NodeView.GetScriptStruct()->IsChildOf<FStateTreeConditionBase>()
|
|
|| NodeView.GetScriptStruct()->IsChildOf<FStateTreeConsiderationBase>()
|
|
|| NodeView.GetScriptStruct()->IsChildOf<FStateTreePropertyFunctionBase>())
|
|
{
|
|
// Conditions, Considerations, and PropertyFunctions are stored in shared instance data.
|
|
SourceInstanceData = &SharedInstanceData;
|
|
}
|
|
|
|
FStateTreeDataView NodeDataView = Node.InstanceDataHandle.IsObjectSource()
|
|
? FStateTreeDataView(SourceInstanceData->GetMutableObject(Node.InstanceTemplateIndex.Get()))
|
|
: FStateTreeDataView(SourceInstanceData->GetMutableStruct(Node.InstanceTemplateIndex.Get()));
|
|
|
|
DataViews.Add(Node.InstanceDataHandle, NodeDataView);
|
|
|
|
if (Node.BindingsBatch.IsValid())
|
|
{
|
|
BindingBatchDataView.Add(Node.BindingsBatch, NodeDataView);
|
|
}
|
|
}
|
|
|
|
auto GetDataSourceView = [&DataViews](const FStateTreeDataHandle Handle) -> FStateTreeDataView
|
|
{
|
|
if (const FStateTreeDataView* ViewPtr = DataViews.Find(Handle))
|
|
{
|
|
return *ViewPtr;
|
|
}
|
|
return FStateTreeDataView();
|
|
};
|
|
|
|
auto GetBindingBatchDataView = [&BindingBatchDataView](const FStateTreeIndex16 Index) -> FStateTreeDataView
|
|
{
|
|
if (const FStateTreeDataView* ViewPtr = BindingBatchDataView.Find(Index))
|
|
{
|
|
return *ViewPtr;
|
|
}
|
|
return FStateTreeDataView();
|
|
};
|
|
|
|
|
|
for (int32 BatchIndex = 0; BatchIndex < CopyBatches.Num(); ++BatchIndex)
|
|
{
|
|
const FPropertyBindingCopyInfoBatch& Batch = CopyBatches[BatchIndex];
|
|
|
|
// Find data view for the binding target.
|
|
FStateTreeDataView TargetView = GetBindingBatchDataView(FStateTreeIndex16(BatchIndex));
|
|
if (!TargetView.IsValid())
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%hs: '%s' Invalid target struct when trying to bind to '%s'")
|
|
, __FUNCTION__
|
|
, *GetPathName()
|
|
, *Batch.TargetStruct.Get().Name.ToString());
|
|
return false;
|
|
}
|
|
|
|
FString ErrorMsg;
|
|
for (int32 Index = Batch.BindingsBegin.Get(); Index != Batch.BindingsEnd.Get(); Index++)
|
|
{
|
|
FStateTreePropertyPathBinding& Binding = PropertyPathBindings[Index];
|
|
|
|
const EStateTreeDataSourceType Source = Binding.GetSourceDataHandle().GetSource();
|
|
const bool bIsSourceEvent = Source == EStateTreeDataSourceType::TransitionEvent || Source == EStateTreeDataSourceType::StateEvent;
|
|
|
|
if(!bIsSourceEvent)
|
|
{
|
|
FStateTreeDataView SourceView = GetDataSourceView(Binding.GetSourceDataHandle());
|
|
|
|
if (!Binding.GetMutableSourcePath().UpdateSegmentsFromValue(SourceView, &ErrorMsg))
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%hs: '%s' Failed to update source instance structs for property binding '%s'. Reason: %s")
|
|
, __FUNCTION__
|
|
, *GetPathName()
|
|
, *Binding.GetTargetPath().ToString()
|
|
, *ErrorMsg);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (!Binding.GetMutableTargetPath().UpdateSegmentsFromValue(TargetView, &ErrorMsg))
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%hs: '%s' Failed to update target instance structs for property binding '%s'. Reason: %s")
|
|
, __FUNCTION__
|
|
, *GetPathName()
|
|
, *Binding.GetTargetPath().ToString()
|
|
, *ErrorMsg);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
#if WITH_EDITOR
|
|
|
|
void FStateTreeMemoryUsage::AddUsage(const FConstStructView View)
|
|
{
|
|
if (const UScriptStruct* ScriptStruct = View.GetScriptStruct())
|
|
{
|
|
EstimatedMemoryUsage = Align(EstimatedMemoryUsage, ScriptStruct->GetMinAlignment());
|
|
EstimatedMemoryUsage += ScriptStruct->GetStructureSize();
|
|
}
|
|
}
|
|
|
|
void FStateTreeMemoryUsage::AddUsage(const UObject* Object)
|
|
{
|
|
if (Object != nullptr)
|
|
{
|
|
check(Object->GetClass());
|
|
EstimatedMemoryUsage += Object->GetClass()->GetStructureSize();
|
|
}
|
|
}
|
|
|
|
TArray<FStateTreeMemoryUsage> UStateTree::CalculateEstimatedMemoryUsage() const
|
|
{
|
|
TArray<FStateTreeMemoryUsage> MemoryUsages;
|
|
TArray<TPair<int32, int32>> StateLinks;
|
|
|
|
if (!bIsLinked
|
|
|| States.IsEmpty()
|
|
|| !Nodes.IsValid())
|
|
{
|
|
return MemoryUsages;
|
|
}
|
|
|
|
const int32 TreeMemUsageIndex = MemoryUsages.Emplace(TEXT("State Tree Max"));
|
|
const int32 InstanceMemUsageIndex = MemoryUsages.Emplace(TEXT("Instance Overhead"));
|
|
const int32 EvalMemUsageIndex = MemoryUsages.Emplace(TEXT("Evaluators"));
|
|
const int32 GlobalTaskMemUsageIndex = MemoryUsages.Emplace(TEXT("GlobalTask"));
|
|
const int32 SharedMemUsageIndex = MemoryUsages.Emplace(TEXT("Shared Data"));
|
|
|
|
auto GetRootStateHandle = [this](const FStateTreeStateHandle InState) -> FStateTreeStateHandle
|
|
{
|
|
FStateTreeStateHandle Result = InState;
|
|
while (Result.IsValid() && States[Result.Index].Parent.IsValid())
|
|
{
|
|
Result = States[Result.Index].Parent;
|
|
}
|
|
return Result;
|
|
};
|
|
|
|
auto GetUsageIndexForState = [&MemoryUsages, this](const FStateTreeStateHandle InStateHandle) -> int32
|
|
{
|
|
check(InStateHandle.IsValid());
|
|
|
|
const int32 FoundMemUsage = MemoryUsages.IndexOfByPredicate([InStateHandle](const FStateTreeMemoryUsage& MemUsage) { return MemUsage.Handle == InStateHandle; });
|
|
if (FoundMemUsage != INDEX_NONE)
|
|
{
|
|
return FoundMemUsage;
|
|
}
|
|
|
|
const FCompactStateTreeState& CompactState = States[InStateHandle.Index];
|
|
|
|
return MemoryUsages.Emplace(TEXT("State ") + CompactState.Name.ToString(), InStateHandle);
|
|
};
|
|
|
|
// Calculate memory usage per state.
|
|
TArray<FStateTreeMemoryUsage> TempStateMemoryUsages;
|
|
TempStateMemoryUsages.SetNum(States.Num());
|
|
|
|
for (int32 Index = 0; Index < States.Num(); Index++)
|
|
{
|
|
const FStateTreeStateHandle StateHandle((uint16)Index);
|
|
const FCompactStateTreeState& CompactState = States[Index];
|
|
const FStateTreeStateHandle ParentHandle = GetRootStateHandle(StateHandle);
|
|
const int32 ParentUsageIndex = GetUsageIndexForState(ParentHandle);
|
|
|
|
FStateTreeMemoryUsage& MemUsage = CompactState.Parent.IsValid() ? TempStateMemoryUsages[Index] : MemoryUsages[GetUsageIndexForState(StateHandle)];
|
|
|
|
MemUsage.NodeCount += CompactState.TasksNum;
|
|
|
|
if (CompactState.Type == EStateTreeStateType::Linked)
|
|
{
|
|
const int32 LinkedUsageIndex = GetUsageIndexForState(CompactState.LinkedState);
|
|
StateLinks.Emplace(ParentUsageIndex, LinkedUsageIndex);
|
|
}
|
|
|
|
if (CompactState.ParameterTemplateIndex.IsValid())
|
|
{
|
|
MemUsage.NodeCount++;
|
|
MemUsage.AddUsage(DefaultInstanceData.GetStruct(CompactState.ParameterTemplateIndex.Get()));
|
|
}
|
|
|
|
for (int32 TaskIndex = CompactState.TasksBegin; TaskIndex < (CompactState.TasksBegin + CompactState.TasksNum); TaskIndex++)
|
|
{
|
|
if (const FStateTreeTaskBase* Task = Nodes[TaskIndex].GetPtr<const FStateTreeTaskBase>())
|
|
{
|
|
if (Task->InstanceDataHandle.IsObjectSource())
|
|
{
|
|
MemUsage.NodeCount++;
|
|
MemUsage.AddUsage(DefaultInstanceData.GetObject(Task->InstanceTemplateIndex.Get()));
|
|
}
|
|
else
|
|
{
|
|
MemUsage.NodeCount++;
|
|
MemUsage.AddUsage(DefaultInstanceData.GetStruct(Task->InstanceTemplateIndex.Get()));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Combine max child usage to parents. Iterate backwards to update children first.
|
|
for (int32 Index = States.Num() - 1; Index >= 0; Index--)
|
|
{
|
|
const FStateTreeStateHandle StateHandle((uint16)Index);
|
|
const FCompactStateTreeState& CompactState = States[Index];
|
|
|
|
FStateTreeMemoryUsage& MemUsage = CompactState.Parent.IsValid() ? TempStateMemoryUsages[Index] : MemoryUsages[GetUsageIndexForState(StateHandle)];
|
|
|
|
int32 MaxChildStateMem = 0;
|
|
int32 MaxChildStateNodes = 0;
|
|
|
|
for (uint16 ChildState = CompactState.ChildrenBegin; ChildState < CompactState.ChildrenEnd; ChildState = States[ChildState].GetNextSibling())
|
|
{
|
|
const FStateTreeMemoryUsage& ChildMemUsage = TempStateMemoryUsages[ChildState];
|
|
if (ChildMemUsage.EstimatedMemoryUsage > MaxChildStateMem)
|
|
{
|
|
MaxChildStateMem = ChildMemUsage.EstimatedMemoryUsage;
|
|
MaxChildStateNodes = ChildMemUsage.NodeCount;
|
|
}
|
|
}
|
|
|
|
MemUsage.EstimatedMemoryUsage += MaxChildStateMem;
|
|
MemUsage.NodeCount += MaxChildStateNodes;
|
|
}
|
|
|
|
// Accumulate linked states.
|
|
for (int32 Index = StateLinks.Num() - 1; Index >= 0; Index--)
|
|
{
|
|
FStateTreeMemoryUsage& ParentUsage = MemoryUsages[StateLinks[Index].Get<0>()];
|
|
const FStateTreeMemoryUsage& LinkedUsage = MemoryUsages[StateLinks[Index].Get<1>()];
|
|
const int32 LinkedTotalUsage = LinkedUsage.EstimatedMemoryUsage + LinkedUsage.EstimatedChildMemoryUsage;
|
|
if (LinkedTotalUsage > ParentUsage.EstimatedChildMemoryUsage)
|
|
{
|
|
ParentUsage.EstimatedChildMemoryUsage = LinkedTotalUsage;
|
|
ParentUsage.ChildNodeCount = LinkedUsage.NodeCount + LinkedUsage.ChildNodeCount;
|
|
}
|
|
}
|
|
|
|
// Evaluators
|
|
FStateTreeMemoryUsage& EvalMemUsage = MemoryUsages[EvalMemUsageIndex];
|
|
for (int32 EvalIndex = EvaluatorsBegin; EvalIndex < (EvaluatorsBegin + EvaluatorsNum); EvalIndex++)
|
|
{
|
|
const FStateTreeEvaluatorBase& Eval = Nodes[EvalIndex].Get<const FStateTreeEvaluatorBase>();
|
|
if (Eval.InstanceDataHandle.IsObjectSource())
|
|
{
|
|
EvalMemUsage.AddUsage(DefaultInstanceData.GetObject(Eval.InstanceTemplateIndex.Get()));
|
|
}
|
|
else
|
|
{
|
|
EvalMemUsage.AddUsage(DefaultInstanceData.GetStruct(Eval.InstanceTemplateIndex.Get()));
|
|
}
|
|
EvalMemUsage.NodeCount++;
|
|
}
|
|
|
|
// Global Tasks
|
|
FStateTreeMemoryUsage& GlobalTaskMemUsage = MemoryUsages[GlobalTaskMemUsageIndex];
|
|
for (int32 TaskIndex = GlobalTasksBegin; TaskIndex < (GlobalTasksBegin + GlobalTasksNum); TaskIndex++)
|
|
{
|
|
const FStateTreeTaskBase& Task = Nodes[TaskIndex].Get<const FStateTreeTaskBase>();
|
|
if (Task.InstanceDataHandle.IsObjectSource())
|
|
{
|
|
GlobalTaskMemUsage.AddUsage(DefaultInstanceData.GetObject(Task.InstanceTemplateIndex.Get()));
|
|
}
|
|
else
|
|
{
|
|
GlobalTaskMemUsage.AddUsage(DefaultInstanceData.GetStruct(Task.InstanceTemplateIndex.Get()));
|
|
}
|
|
GlobalTaskMemUsage.NodeCount++;
|
|
}
|
|
|
|
// Estimate highest combined usage.
|
|
FStateTreeMemoryUsage& TreeMemUsage = MemoryUsages[TreeMemUsageIndex];
|
|
|
|
// Exec state
|
|
TreeMemUsage.AddUsage(DefaultInstanceData.GetStruct(0));
|
|
TreeMemUsage.NodeCount++;
|
|
|
|
TreeMemUsage.EstimatedMemoryUsage += EvalMemUsage.EstimatedMemoryUsage;
|
|
TreeMemUsage.NodeCount += EvalMemUsage.NodeCount;
|
|
|
|
TreeMemUsage.EstimatedMemoryUsage += GlobalTaskMemUsage.EstimatedMemoryUsage;
|
|
TreeMemUsage.NodeCount += GlobalTaskMemUsage.NodeCount;
|
|
|
|
FStateTreeMemoryUsage& InstanceMemUsage = MemoryUsages[InstanceMemUsageIndex];
|
|
// FStateTreeInstanceData overhead.
|
|
InstanceMemUsage.EstimatedMemoryUsage += sizeof(FStateTreeInstanceData);
|
|
// FInstancedStructContainer overhead.
|
|
InstanceMemUsage.EstimatedMemoryUsage += TreeMemUsage.NodeCount * FInstancedStructContainer::OverheadPerItem;
|
|
|
|
TreeMemUsage.EstimatedMemoryUsage += InstanceMemUsage.EstimatedMemoryUsage;
|
|
|
|
int32 MaxSubtreeUsage = 0;
|
|
int32 MaxSubtreeNodeCount = 0;
|
|
|
|
for (const FStateTreeMemoryUsage& MemUsage : MemoryUsages)
|
|
{
|
|
if (MemUsage.Handle.IsValid())
|
|
{
|
|
const int32 TotalUsage = MemUsage.EstimatedMemoryUsage + MemUsage.EstimatedChildMemoryUsage;
|
|
if (TotalUsage > MaxSubtreeUsage)
|
|
{
|
|
MaxSubtreeUsage = TotalUsage;
|
|
MaxSubtreeNodeCount = MemUsage.NodeCount + MemUsage.ChildNodeCount;
|
|
}
|
|
}
|
|
}
|
|
|
|
TreeMemUsage.EstimatedMemoryUsage += MaxSubtreeUsage;
|
|
TreeMemUsage.NodeCount += MaxSubtreeNodeCount;
|
|
|
|
FStateTreeMemoryUsage& SharedMemUsage = MemoryUsages[SharedMemUsageIndex];
|
|
SharedMemUsage.NodeCount = SharedInstanceData.Num();
|
|
SharedMemUsage.EstimatedMemoryUsage = SharedInstanceData.GetEstimatedMemoryUsage();
|
|
|
|
return MemoryUsages;
|
|
}
|
|
|
|
void UStateTree::OnPreBeginPIE(const bool bIsSimulating)
|
|
{
|
|
CompileIfChanged();
|
|
}
|
|
|
|
void UStateTree::CompileIfChanged()
|
|
{
|
|
if (UE::StateTree::Delegates::OnRequestCompile.IsBound() && UE::StateTree::Delegates::OnRequestEditorHash.IsBound())
|
|
{
|
|
const uint32 CurrentHash = UE::StateTree::Delegates::OnRequestEditorHash.Execute(*this);
|
|
if (LastCompiledEditorDataHash != CurrentHash)
|
|
{
|
|
UE_LOG(LogStateTree, Log, TEXT("%s: Editor data has changed. Recompiling state tree."), *GetPathName());
|
|
UE::StateTree::Delegates::OnRequestCompile.Execute(*this);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ResetCompiled();
|
|
UE_LOG(LogStateTree, Warning, TEXT("%s: could not compile. Please resave the StateTree asset."), *GetPathName());
|
|
}
|
|
}
|
|
|
|
void UStateTree::Compile()
|
|
{
|
|
if (UE::StateTree::Delegates::OnRequestCompile.IsBound())
|
|
{
|
|
UE_LOG(LogStateTree, Log, TEXT("%s: Editor data has changed. Recompiling state tree."), *GetPathName());
|
|
UE::StateTree::Delegates::OnRequestCompile.Execute(*this);
|
|
}
|
|
else
|
|
{
|
|
ResetCompiled();
|
|
UE_LOG(LogStateTree, Warning, TEXT("%s: could not compile. Please resave the StateTree asset."), *GetPathName());
|
|
}
|
|
}
|
|
#endif //WITH_EDITOR
|
|
|
|
#if WITH_EDITOR || WITH_STATETREE_DEBUG
|
|
FString UStateTree::DebugInternalLayoutAsString() const
|
|
{
|
|
FStringBuilderBase DebugString;
|
|
DebugString << TEXT("StateTree (asset: '");
|
|
GetFullName(DebugString);
|
|
DebugString << TEXT("')\n");
|
|
|
|
auto PrintObjectNameSafe = [&DebugString](int32 Index, const UObject* Obj)
|
|
{
|
|
DebugString << TEXT(" (");
|
|
DebugString << Index;
|
|
DebugString << TEXT(")");
|
|
if (Obj)
|
|
{
|
|
DebugString << Obj->GetFName();
|
|
}
|
|
else
|
|
{
|
|
DebugString << TEXT("null");
|
|
}
|
|
DebugString << TEXT('\n');
|
|
};
|
|
auto PrintViewNameSafe = [&DebugString](int32 Index, const FConstStructView& View)
|
|
{
|
|
DebugString << TEXT(" (");
|
|
DebugString << Index;
|
|
DebugString << TEXT(")");
|
|
if (View.IsValid())
|
|
{
|
|
DebugString << View.GetScriptStruct()->GetFName();
|
|
}
|
|
else
|
|
{
|
|
DebugString << TEXT("null");
|
|
}
|
|
DebugString << TEXT('\n');
|
|
};
|
|
|
|
// Tree items (e.g. tasks, evaluators, conditions)
|
|
DebugString.Appendf(TEXT("\nNodes(%d)\n"), Nodes.Num());
|
|
for (int32 Index = 0; Index < Nodes.Num(); Index++)
|
|
{
|
|
const FConstStructView Node = Nodes[Index];
|
|
PrintViewNameSafe(Index, Node);
|
|
}
|
|
|
|
// Instance InstanceData data (e.g. tasks)
|
|
DebugString.Appendf(TEXT("\nInstance Data(%d)\n"), DefaultInstanceData.Num());
|
|
for (int32 Index = 0; Index < DefaultInstanceData.Num(); Index++)
|
|
{
|
|
if (DefaultInstanceData.IsObject(Index))
|
|
{
|
|
const UObject* Data = DefaultInstanceData.GetObject(Index);
|
|
PrintObjectNameSafe(Index, Data);
|
|
}
|
|
else
|
|
{
|
|
const FConstStructView Data = DefaultInstanceData.GetStruct(Index);
|
|
PrintViewNameSafe(Index, Data);
|
|
}
|
|
}
|
|
|
|
// External data (e.g. fragments, subsystems)
|
|
DebugString.Appendf(TEXT("\nExternal Data(%d)\n"), ExternalDataDescs.Num());
|
|
if (ExternalDataDescs.Num())
|
|
{
|
|
DebugString.Appendf(TEXT(" [ (Idx) | %-40s | %-8s | %15s ]\n"), TEXT("Name"), TEXT("Optional"), TEXT("Handle"));
|
|
for (int32 DataDescIndex = 0; DataDescIndex < ExternalDataDescs.Num(); ++DataDescIndex)
|
|
{
|
|
const FStateTreeExternalDataDesc& Desc = ExternalDataDescs[DataDescIndex];
|
|
DebugString.Appendf(TEXT(" | (%3d) | %-40s | %8s | %15s |\n"),
|
|
DataDescIndex,
|
|
Desc.Struct ? *Desc.Struct->GetName() : TEXT("null"),
|
|
*UEnum::GetDisplayValueAsText(Desc.Requirement).ToString(),
|
|
*Desc.Handle.DataHandle.Describe());
|
|
}
|
|
}
|
|
|
|
// Bindings
|
|
#if WITH_PROPERTYBINDINGUTILS_DEBUG
|
|
DebugString << PropertyBindings.DebugAsString();
|
|
#endif
|
|
|
|
// States
|
|
DebugString.Appendf(TEXT("\nStates(%d)\n"), States.Num());
|
|
if (States.Num())
|
|
{
|
|
DebugString.Appendf(TEXT(" [ (Idx) | %-30s | %15s | %5s [%3s:%-3s[ | Begin Idx : %4s %4s %4s %4s | Num : %4s %4s %4s %4s ]\n"),
|
|
TEXT("Name"), TEXT("Parent"), TEXT("Child"), TEXT("Beg"), TEXT("End"),
|
|
TEXT("Cond"), TEXT("Tr"), TEXT("Tsk"), TEXT("Uti"), TEXT("Cond"), TEXT("Tr"), TEXT("Tsk"), TEXT("Uti"));
|
|
for (int32 StateIndex = 0; StateIndex < States.Num(); ++StateIndex)
|
|
{
|
|
const FCompactStateTreeState& State = States[StateIndex];
|
|
DebugString.Appendf(TEXT(" | (%3d) | %-30s | %15s | %5s [%3d:%-3d[ | %9s %4d %4d %4d %4d | %3s %4d %4d %4d %4d |\n"),
|
|
StateIndex,
|
|
*State.Name.ToString(),
|
|
*State.Parent.Describe(),
|
|
TEXT(" "), State.ChildrenBegin, State.ChildrenEnd,
|
|
TEXT(" "), State.EnterConditionsBegin, State.TransitionsBegin, State.TasksBegin, State.UtilityConsiderationsBegin,
|
|
TEXT(" "), State.EnterConditionsNum, State.TransitionsNum, State.TasksNum, State.UtilityConsiderationsNum);
|
|
}
|
|
}
|
|
|
|
// Transitions
|
|
DebugString.Appendf(TEXT("\nTransitions(%d)\n"), Transitions.Num());
|
|
if (Transitions.Num())
|
|
{
|
|
DebugString.Appendf(TEXT(" [ (Idx) | %-3s | %15s | %-20s | %-40s | %-40s | %-8s ]\n")
|
|
, TEXT("Idx"), TEXT("State"), TEXT("Transition Trigger"), TEXT("Transition Event Tag"), TEXT("Transition Event Payload"), TEXT("Cond:Num"));
|
|
for (int32 TransitionIndex = 0; TransitionIndex < Transitions.Num(); ++TransitionIndex)
|
|
{
|
|
const FCompactStateTransition& Transition = Transitions[TransitionIndex];
|
|
DebugString.Appendf(TEXT(" | (%3d) | %3d | %15s | %-20s | %-40s | %-40s | %4d:%3d |\n"),
|
|
TransitionIndex,
|
|
Transition.ConditionsBegin,
|
|
*Transition.State.Describe(),
|
|
*UEnum::GetDisplayValueAsText(Transition.Trigger).ToString(),
|
|
*Transition.RequiredEvent.Tag.ToString(),
|
|
Transition.RequiredEvent.PayloadStruct ? *Transition.RequiredEvent.PayloadStruct->GetName() : TEXT("None"),
|
|
Transition.ConditionsBegin,
|
|
Transition.ConditionsNum);
|
|
}
|
|
}
|
|
|
|
// Evaluators
|
|
DebugString.Appendf(TEXT("\nEvaluators(%d)\n"), EvaluatorsNum);
|
|
if (EvaluatorsNum)
|
|
{
|
|
DebugString.Appendf(TEXT(" [ (Idx) | %-30s | %8s | %10s ]\n"),
|
|
TEXT("Name"), TEXT("Bindings"), TEXT("Struct Idx"));
|
|
for (int32 EvalIndex = EvaluatorsBegin; EvalIndex < (EvaluatorsBegin + EvaluatorsNum); EvalIndex++)
|
|
{
|
|
const FStateTreeEvaluatorBase& Eval = Nodes[EvalIndex].Get<const FStateTreeEvaluatorBase>();
|
|
DebugString.Appendf(TEXT(" | (%3d) | %-30s | %8d | %10s |\n"),
|
|
EvalIndex,
|
|
*Eval.Name.ToString(),
|
|
Eval.BindingsBatch.Get(),
|
|
*Eval.InstanceDataHandle.Describe());
|
|
}
|
|
}
|
|
|
|
// Tasks
|
|
DebugString.Appendf(TEXT("\nTasks\n [ (Idx) | %-30s | %-30s | %8s | %10s ]\n"),
|
|
TEXT("State"), TEXT("Name"), TEXT("Bindings"), TEXT("Struct Idx"));
|
|
for (const FCompactStateTreeState& State : States)
|
|
{
|
|
if (State.TasksNum)
|
|
{
|
|
for (int32 TaskIndex = State.TasksBegin; TaskIndex < (State.TasksBegin + State.TasksNum); TaskIndex++)
|
|
{
|
|
const FStateTreeTaskBase& Task = Nodes[TaskIndex].Get<const FStateTreeTaskBase>();
|
|
DebugString.Appendf(TEXT(" | (%3d) | %-30s | %-30s | %8d | %10s |\n"),
|
|
TaskIndex,
|
|
*State.Name.ToString(),
|
|
*Task.Name.ToString(),
|
|
Task.BindingsBatch.Get(),
|
|
*Task.InstanceDataHandle.Describe());
|
|
}
|
|
}
|
|
}
|
|
for (int32 TaskIndex = GlobalTasksBegin; TaskIndex < (GlobalTasksBegin + GlobalTasksNum); TaskIndex++)
|
|
{
|
|
const FStateTreeTaskBase& Task = Nodes[TaskIndex].Get<const FStateTreeTaskBase>();
|
|
DebugString.Appendf(TEXT(" | (%3d) | %-30s | %-30s | %8d | %10s |\n"),
|
|
TaskIndex,
|
|
TEXT("Global"),
|
|
*Task.Name.ToString(),
|
|
Task.BindingsBatch.Get(),
|
|
*Task.InstanceDataHandle.Describe());
|
|
}
|
|
|
|
// Conditions
|
|
DebugString.Appendf(TEXT("\nConditions\n [ (Idx) | %-30s | %8s | %12s | %10s ]\n"),
|
|
TEXT("Name"), TEXT("Operand"), TEXT("Evaluation"), TEXT("Struct Idx"));
|
|
{
|
|
for (int32 Index = 0; Index < Nodes.Num(); ++Index)
|
|
{
|
|
if(const FStateTreeConditionBase* Cond = Nodes[Index].GetPtr<const FStateTreeConditionBase>())
|
|
{
|
|
DebugString.Appendf(TEXT(" | (%3d) | %-30s | %8s | %12s | %10s |\n"),
|
|
Index,
|
|
*Cond->Name.ToString(),
|
|
*UEnum::GetDisplayValueAsText(Cond->Operand).ToString(),
|
|
*UEnum::GetDisplayValueAsText(Cond->EvaluationMode).ToString(),
|
|
*Cond->InstanceDataHandle.Describe());
|
|
}
|
|
}
|
|
}
|
|
|
|
return DebugString.ToString();
|
|
}
|
|
#endif // WITH_EDITOR || WITH_STATETREE_DEBUG
|
|
|