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ef7ea7b60d
- added StateTree linker - added Link() method to tasks and evaluators - added templated item reference which makes getter code less error prone #jira none #ROBOMERGE-AUTHOR: mikko.mononen #ROBOMERGE-SOURCE: CL 17941680 in //UE5/Main/... #ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v885-17909292) #ROBOMERGE[STARSHIP]: UE5-Release-Engine-Staging Release-5.0 [CL 17941733 by mikko mononen in ue5-release-engine-test branch]
123 lines
3.5 KiB
C++
123 lines
3.5 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "Engine/DataAsset.h"
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#include "StateTreeTypes.h"
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#include "StateTreeSchema.h"
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#include "InstancedStruct.h"
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#include "StateTreePropertyBindings.h"
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#include "StateTree.generated.h"
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/**
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* StateTree asset. Contains the StateTree definition in both editor and runtime (baked) formats.
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*/
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UCLASS(BlueprintType)
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class STATETREEMODULE_API UStateTree : public UDataAsset
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{
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GENERATED_BODY()
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public:
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UStateTree(const FObjectInitializer& ObjectInitializer = FObjectInitializer::Get());
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/** @return Script Struct that can be used to instantiate the runtime storage */
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const UScriptStruct* GetRuntimeStorageStruct() const { return RuntimeStorageStruct; }
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/** @return Instance of the runtime storage that contains the default values */
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const FInstancedStruct& GetRuntimeStorageDefaultValue() const { return RuntimeStorageDefaultValue; }
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/** @return List of external items required by the state tree */
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TConstArrayView<FStateTreeExternalItemDesc> GetExternalItems() const { return ExternalItems; }
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/** @return Schema describing which inputs, evaluators, and tasks a StateTree can contain */
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const UStateTreeSchema* GetSchema() const { return Schema; }
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void SetSchema(UStateTreeSchema* InSchema) { Schema = InSchema; }
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/** @return true is the tree asset is considered valid (e.g. at least one state) */
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bool IsValidStateTree() const;
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void ResolvePropertyPaths();
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#if WITH_EDITOR
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/** Resets the baked data to empty. */
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void ResetBaked();
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#endif
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#if WITH_EDITORONLY_DATA
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// Edit time data for the StateTree, instance of UStateTreeEditorData
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UPROPERTY()
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UObject* EditorData;
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#endif
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protected:
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virtual void BeginDestroy() override;
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virtual void PostLoad() override;
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#if WITH_EDITOR
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virtual void PostEditChangeProperty(struct FPropertyChangedEvent& PropertyChangedEvent) override;
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virtual void GetAssetRegistryTags(TArray<FAssetRegistryTag>& OutTags) const override;
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#endif
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/** Initializes the types and default values related to StateTree runtime storage */
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void InitRuntimeStorage();
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/** Resolved references between data in the StateTree. */
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void Link();
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/** @return Number of items (Evaluators & Tasks) in the runtime storage. */
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int32 GetRuntimeStorageItemCount() const { return RuntimeStorageOffsets.Num(); }
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private:
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// Properties
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UPROPERTY(EditDefaultsOnly, Category = Common, Instanced)
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UStateTreeSchema* Schema = nullptr;
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/** Evaluators and Tasks that require runtime state */
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UPROPERTY()
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TArray<FInstancedStruct> RuntimeStorageItems;
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/** Script Struct that can be used to instantiate the runtime storage */
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UPROPERTY()
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UScriptStruct* RuntimeStorageStruct;
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/** Offsets into the runtime type to quickly get a struct view to a specific Task or Evaluator */
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TArray<FStateTreeRuntimeStorageItemOffset> RuntimeStorageOffsets;
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/** Instance of the runtime storage that contains the default values. */
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UPROPERTY()
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FInstancedStruct RuntimeStorageDefaultValue;
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UPROPERTY(meta = (BaseStruct = "StateTreeConditionBase", ExcludeBaseStruct))
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TArray<FInstancedStruct> Conditions;
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/** List of external items required by the state tree, creating during linking. */
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UPROPERTY(Transient)
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TArray<FStateTreeExternalItemDesc> ExternalItems;
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UPROPERTY()
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FStateTreePropertyBindings PropertyBindings;
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UPROPERTY()
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TArray<FBakedStateTreeState> States;
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UPROPERTY()
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TArray<FBakedStateTransition> Transitions;
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friend struct FStateTreeInstance;
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friend struct FStateTreeExecutionContext;
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#if WITH_EDITORONLY_DATA
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friend struct FStateTreeBaker;
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#endif
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};
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