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af7394cf27
#rnx #rb mikko.mononen #preflight 6273ec0f03269096abc99574 [CL 20059078 by Yoan StAmant in ue5-main branch]
93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "StateTreeReference.h"
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#include "StateTree.h"
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#include "StateTreeDelegates.h"
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#if WITH_EDITOR
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#include "Editor.h"
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#endif
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#if WITH_EDITOR
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void UStateTreeReferenceWrapper::PostEditChangeProperty(struct FPropertyChangedEvent& PropertyChangedEvent)
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{
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UObject::PostEditChangeProperty(PropertyChangedEvent);
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if (PropertyChangedEvent.MemberProperty && PropertyChangedEvent.Property)
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{
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if (PropertyChangedEvent.Property->GetFName() == GET_MEMBER_NAME_CHECKED(FStateTreeReference, StateTree))
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{
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StateTreeReference.SyncParameters();
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}
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}
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}
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void UStateTreeReferenceWrapper::PostEditChangeChainProperty(FPropertyChangedChainEvent& PropertyChangedEvent)
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{
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UObject::PostEditChangeChainProperty(PropertyChangedEvent);
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}
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void UStateTreeReferenceWrapper::PostInitProperties()
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{
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UObject::PostInitProperties();
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// Registers a delegate to be notified when the associated StateTree asset get successfully recompiled
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// to make sure that the parameters in the StateTreeReference are still valid.
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PostCompileHandle = UE::StateTree::Delegates::OnPostCompile.AddLambda([this](const UStateTree& InStateTree)
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{
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if (StateTreeReference.StateTree == &InStateTree)
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{
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if (StateTreeReference.SyncParameters())
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{
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MarkPackageDirty();
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}
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}
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});
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// Make sure any modifications to the parameters since the last sync (PostLoad) won't cause runtime issues.
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// This shouldn't be necessary if only parameters values could be modified but until that is enforce this will
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// prevent parameters inconsistencies at runtime.
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PIEHandle = FEditorDelegates::PreBeginPIE.AddLambda([this](const bool bBegan)
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{
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const bool bModified = StateTreeReference.SyncParameters();
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UE_CLOG(bModified, LogStateTree, Warning, TEXT("Parameters for StateTree '%s' stored in %s were auto-fixed to be usable at runtime."),
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*GetNameSafe(StateTreeReference.StateTree), *GetName());
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});
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}
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void UStateTreeReferenceWrapper::PostLoad()
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{
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UObject::PostLoad();
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// This might modify the object but we don't want to dirty on load
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StateTreeReference.SyncParameters();
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}
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void UStateTreeReferenceWrapper::BeginDestroy()
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{
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UObject::BeginDestroy();
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// Unregister all our delegates
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UE::StateTree::Delegates::OnPostCompile.Remove(PostCompileHandle);
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FEditorDelegates::PreBeginPIE.Remove(PIEHandle);
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}
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bool FStateTreeReference::SyncParameters()
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{
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if (StateTree == nullptr)
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{
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const bool bHadParameters = Parameters.IsValid();
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Parameters.Reset();
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return bHadParameters;
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}
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const FInstancedPropertyBag& DefaultParameters = StateTree->GetDefaultParameters();
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const bool bAreParametersSynced = DefaultParameters.GetPropertyBagStruct() == Parameters.GetPropertyBagStruct();
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if (!bAreParametersSynced)
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{
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Parameters.MigrateToNewBagInstance(DefaultParameters);
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}
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return !bAreParametersSynced;
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}
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#endif // WITH_EDITOR
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