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4f79176477
Add validation warning if the state tree is not compiled to prevent uncompiled state tree to be submitted #rb mikko.mononen [CL 33001894 by guillaume arruda in ue5-main branch]
1027 lines
35 KiB
C++
1027 lines
35 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 "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 "StructUtilsDelegates.h"
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#include "Misc/EnumerateRange.h"
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#include "UObject/AssetRegistryTagsContext.h"
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#if WITH_EDITOR
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#include "Editor.h"
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#include "Engine/UserDefinedStruct.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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FCustomVersionRegistration GRegisterStateTreeCustomVersion(FStateTreeCustomVersion::GUID, FStateTreeCustomVersion::LatestVersion, TEXT("StateTreeAsset"));
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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 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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TSharedPtr<FStateTreeInstanceData> UStateTree::GetSharedInstanceData() const
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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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// If shared instance data for this thread exists, return it.
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{
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FReadScopeLock 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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FWriteScopeLock 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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void UStateTree::ResetCompiled()
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{
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Schema = nullptr;
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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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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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ResetLinked();
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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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// If the asset is not linked yet (or has failed), no need to link.
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if (!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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bool bShouldRelink = false;
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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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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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Structs.Add(ObjectToBeReplaced->GetClass());
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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."), *GetFullName());
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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."), *GetFullName());
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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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OnObjectsReinstancedHandle = FCoreUObjectDelegates::OnObjectsReinstanced.AddUObject(this, &UStateTree::OnObjectsReinstanced);
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OnUserDefinedStructReinstancedHandle = UE::StructUtils::Delegates::OnUserDefinedStructReinstanced.AddUObject(this, &UStateTree::OnUserDefinedStructReinstanced);
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FEditorDelegates::PreBeginPIE.AddUObject(this, &UStateTree::OnPreBeginPIE);
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}
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void UStateTree::BeginDestroy()
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{
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if (OnObjectsReinstancedHandle.IsValid())
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{
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FCoreUObjectDelegates::OnObjectsReinstanced.Remove(OnObjectsReinstancedHandle);
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OnObjectsReinstancedHandle.Reset();
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}
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if (OnUserDefinedStructReinstancedHandle.IsValid())
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{
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UE::StructUtils::Delegates::OnUserDefinedStructReinstanced.Remove(OnUserDefinedStructReinstancedHandle);
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OnUserDefinedStructReinstancedHandle.Reset();
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}
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#if WITH_EDITOR
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FEditorDelegates::PreBeginPIE.RemoveAll(this);
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#endif // WITH_EDITOR
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Super::BeginDestroy();
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}
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void UStateTree::GetAssetRegistryTags(TArray<FAssetRegistryTag>& OutTags) const
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{
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PRAGMA_DISABLE_DEPRECATION_WARNINGS;
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Super::GetAssetRegistryTags(OutTags);
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PRAGMA_ENABLE_DEPRECATION_WARNINGS;
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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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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."), *GetFullName())));
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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."), *GetFullName())));
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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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FReadScopeLock 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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#if WITH_EDITOR
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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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FStateTreeInstanceData& SourceInstanceData = NodeView.GetPtr<FStateTreeConditionBase>() != nullptr ? 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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#endif // WITH_EDITOR
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const int32 CurrentVersion = GetLinkerCustomVersion(FStateTreeCustomVersion::GUID);
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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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}
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if (CurrentVersion < FStateTreeCustomVersion::LatestVersion)
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{
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// Compiled data is in older format, try to compile the StateTree.
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if (UE::StateTree::Delegates::OnRequestCompile.IsBound())
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{
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LOG_SCOPE_VERBOSITY_OVERRIDE(LogStateTree, ELogVerbosity::Log);
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UE_LOG(LogStateTree, Log, TEXT("%s: compiled data is in older format. Trying to compile the asset..."), *GetFullName());
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UE::StateTree::Delegates::OnRequestCompile.Execute(*this);
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}
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else
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{
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ResetCompiled();
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UE_LOG(LogStateTree, Warning, TEXT("%s: compiled data is in older format. Please resave the StateTree asset."), *GetFullName());
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}
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}
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else
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{
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CompileIfChanged();
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}
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#else
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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."), *GetFullName());
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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."), *GetFullName());
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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)
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{
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Super::Serialize(Record);
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Record.GetUnderlyingArchive().UsingCustomVersion(FStateTreeCustomVersion::GUID);
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// We need to link and rebind property bindings each time a BP is compiled,
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// because property bindings may get invalid, and instance data potentially needs refreshed.
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if (Record.GetUnderlyingArchive().IsModifyingWeakAndStrongReferences())
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{
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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."), *GetName());
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}
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}
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}
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void UStateTree::ResetLinked()
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{
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bIsLinked = false;
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ExternalDataDescs.Reset();
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FWriteScopeLock WriteLock(PerThreadSharedInstanceDataLock);
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PerThreadSharedInstanceData.Reset();
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}
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bool UStateTree::Link()
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{
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// Initialize the instance data default value.
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// This data will be used to allocate runtime instance on all StateTree users.
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ResetLinked();
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// Resolves nodes references to other StateTree data
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FStateTreeLinker Linker(Schema);
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for (int32 Index = 0; Index < Nodes.Num(); Index++)
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{
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FStructView Node = Nodes[Index];
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if (FStateTreeNodeBase* NodePtr = Node.GetPtr<FStateTreeNodeBase>())
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{
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const bool bLinkSucceeded = NodePtr->Link(Linker);
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if (!bLinkSucceeded || Linker.GetStatus() == EStateTreeLinkerStatus::Failed)
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{
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UE_LOG(LogStateTree, Error, TEXT("%s: node '%s' failed to resolve its references."), *GetFullName(), *NodePtr->StaticStruct()->GetName());
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return false;
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}
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}
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}
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ExternalDataDescs = Linker.GetExternalDataDescs();
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if (States.Num() > 0 && Nodes.Num() > 0)
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{
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// Check that all nodes are valid.
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for (FConstStructView Node : Nodes)
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{
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if (!Node.IsValid())
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{
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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."), *GetFullName());
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return false;
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}
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}
|
|
}
|
|
|
|
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."), *GetFullName());
|
|
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."), *GetFullName());
|
|
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;
|
|
}
|
|
|
|
bool UStateTree::PatchBindings()
|
|
{
|
|
const TArrayView<FStateTreeBindableStructDesc> SourceStructs = PropertyBindings.SourceStructs;
|
|
const TArrayView<FStateTreePropertyCopyBatch> CopyBatches = PropertyBindings.CopyBatches;
|
|
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 (FStateTreePropertyCopyBatch& CopyBatch : CopyBatches)
|
|
{
|
|
if (const UClass* TargetClass = Cast<UClass>(CopyBatch.TargetStruct.Struct))
|
|
{
|
|
if (TargetClass->HasAnyClassFlags(CLASS_NewerVersionExists))
|
|
{
|
|
CopyBatch.TargetStruct.Struct = TargetClass->GetAuthoritativeClass();
|
|
}
|
|
}
|
|
}
|
|
|
|
auto PatchPropertyPath = [](FStateTreePropertyPath& PropertyPath)
|
|
{
|
|
for (FStateTreePropertyPathSegment& 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.
|
|
if (FStateTreeBindableStructDesc* RootParamsDesc = GetSourceStructByHandle(FStateTreeDataHandle(EStateTreeDataSourceType::GlobalParameterData)))
|
|
{
|
|
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."), *GetFullName(), *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."), *GetFullName(), *State.Name.ToString());
|
|
return false;
|
|
}
|
|
Desc->Struct = Params.Parameters.GetPropertyBagStruct();
|
|
|
|
if (State.ParameterBindingsBatch.IsValid())
|
|
{
|
|
FStateTreePropertyCopyBatch& Batch = CopyBatches[State.ParameterBindingsBatch.Get()];
|
|
Batch.TargetStruct.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."), *GetFullName(), *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."), *GetFullName(), *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."),
|
|
*GetFullName(), *State.Name.ToString(), *State.LinkedAsset->GetFullName());
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
TMap<FStateTreeDataHandle, FStateTreeDataView> DataViews;
|
|
TMap<FStateTreeIndex16, FStateTreeDataView> BindingBatchDataView;
|
|
|
|
// Tree parameters
|
|
DataViews.Add(FStateTreeDataHandle(EStateTreeDataSourceType::GlobalParameterData), 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.GetPtr<const FStateTreeConditionBase>())
|
|
{
|
|
// Conditions 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 FStateTreePropertyCopyBatch& Batch = CopyBatches[BatchIndex];
|
|
|
|
// Find data view for the binding target.
|
|
FStateTreeDataView TargetView = GetBindingBatchDataView(FStateTreeIndex16(BatchIndex));
|
|
if (!TargetView.IsValid())
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%hs: Invalid target struct when trying to bind to '%s'."), __FUNCTION__, *Batch.TargetStruct.Name.ToString());
|
|
return false;
|
|
}
|
|
|
|
FString ErrorMsg;
|
|
for (int32 Index = Batch.BindingsBegin; Index != Batch.BindingsEnd; 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: Failed to update source instance structs for property binding '%s'. Reason: %s"), __FUNCTION__, *Binding.GetTargetPath().ToString(), *ErrorMsg);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (!Binding.GetMutableTargetPath().UpdateSegmentsFromValue(TargetView, &ErrorMsg))
|
|
{
|
|
UE_LOG(LogStateTree, Error, TEXT("%hs: Failed to update target instance structs for property binding '%s'. Reason: %s"), __FUNCTION__, *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."), *GetFullName());
|
|
UE::StateTree::Delegates::OnRequestCompile.Execute(*this);
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif // WITH_EDITOR
|
|
|