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389d2b116f
Upgrades to SplineNavModifierComponent: - Now updates any time any sibling USplineComponent changes in a meaningful way such as changes to: bIsLooping, moving/adding/removing spline points, modifying component transform, adding/removing USplineComponents from the actor - Now lets the user assign a spline instead of arbitrarily finding the first spline referenced on a the object #rb Yoan.StAmant #jira UE-202492 #changelist validated #virtualized [CL 32230423 by robert seiver in ue5-main branch]
84 lines
3.1 KiB
C++
84 lines
3.1 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "NavModifierComponent.h"
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#include "SplineNavModifierComponent.generated.h"
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#define INVALID_SPLINE_VERSION MIN_int32
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struct FNavigationRelevantData;
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UENUM()
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enum class ESubdivisionLOD
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{
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Low,
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Medium,
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High,
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Ultra,
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};
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/**
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* Used to assign a chosen NavArea to the nav mesh in the vicinity of a chosen spline.
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* A tube is constructed around the spline and intersected with the nav mesh. Set its dimensions with StrokeWidth and StrokeHeight.
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*/
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UCLASS(Blueprintable, MinimalAPI, Meta = (BlueprintSpawnableComponent), hidecategories = (Variable, Tags, Cooking, Collision))
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class USplineNavModifierComponent : public UNavModifierComponent
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{
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GENERATED_BODY()
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/**
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* If true, any changes to Spline Components on this actor will cause this component to update the nav mesh.
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* This will be slow if the spline has many points, or the nav mesh is sufficiently large.
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*/
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UPROPERTY(EditAnywhere, Category = Navigation)
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bool bUpdateNavDataOnSplineChange = true;
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/** The SplineComponent which will modify the nav mesh; it must also be attached to this component's owner actor */
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UPROPERTY(EditAnywhere, Category = Navigation, Meta = (UseComponentPicker, AllowedClasses = "/Script/Engine.SplineComponent", DisplayName = "Nav Modifier Spline"))
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FComponentReference AttachedSpline;
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/** Cross-sectional width of the tube enclosing the spline */
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UPROPERTY(EditAnywhere, Category = Navigation, Meta=(UIMin="10", ClampMin="10"))
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double StrokeWidth = 500.0f;
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/** Cross-sectional height of the tube enclosing the spline */
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UPROPERTY(EditAnywhere, Category = Navigation, Meta=(UIMin="10", ClampMin="10"))
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double StrokeHeight = 500.0f;
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/** Higher LOD will capture finer details in the spline */
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UPROPERTY(EditAnywhere, Category = Navigation)
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ESubdivisionLOD SubdivisionLOD = ESubdivisionLOD::Medium;
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USplineNavModifierComponent(const FObjectInitializer& ObjectInitializer);
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/**
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* Recalculates bounds, then re-computes the NavModifierVolumes and re-marks the nav mesh.
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* Disable UpdateNavDataOnSplineChange and use this to manually update when either the spline or nav mesh is too large to handle rapid updates.
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*
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* Does nothing in non-editor builds
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*/
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UFUNCTION(CallInEditor, Category = Navigation, Meta=(DisplayName="UpdateNavigationData"))
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NAVIGATIONSYSTEM_API void UpdateNavigationWithComponentData();
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protected:
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#if WITH_EDITORONLY_DATA
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virtual void TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction) override;
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virtual bool IsComponentTickEnabled() const override;
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#endif // WITH_EDITORONLY_DATA
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virtual void CalculateBounds() const override;
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virtual void GetNavigationData(FNavigationRelevantData& Data) const override;
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float GetSubdivisionThreshold() const;
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private:
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#if WITH_EDITORONLY_DATA
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// Used to check against attached spline's version each tick for changes
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uint32 SplineVersion = INVALID_SPLINE_VERSION;
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#endif // WITH_EDITORONLY_DATA
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// Used for bounds calculation and to check against attached spline's transform each tick for changes
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FTransform SplineTransform = FTransform();
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};
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