[ue4] Fixed delegatepocalypse when callin InternalTick in BP functions. Added bone driver component, still freaking out like crazy.

spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/Private/SpineBoneDriverComponent.cpp

@@ -0,0 +1,33 @@
+#include "SpinePluginPrivatePCH.h"
+
+USpineBoneDriverComponent::USpineBoneDriverComponent () {
+	bWantsBeginPlay = true;
+	PrimaryComponentTick.bCanEverTick = true;
+	bTickInEditor = true;
+	bAutoActivate = true;
+}
+
+void USpineBoneDriverComponent::BeginPlay () {
+	Super::BeginPlay();
+}
+
+void USpineBoneDriverComponent::BeforeUpdateWorldTransform(USpineSkeletonComponent* skeleton) {	
+	AActor* owner = GetOwner();
+	if (owner) {		
+		skeleton->SetBoneWorldPosition(BoneName, owner->GetActorLocation() );
+	}
+}
+
+void USpineBoneDriverComponent::TickComponent (float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction) {
+	Super::TickComponent(DeltaTime, TickType, ThisTickFunction);
+
+	if (Target) {
+		USpineSkeletonComponent* skeleton = static_cast<USpineSkeletonComponent*>(Target->GetComponentByClass(USpineSkeletonComponent::StaticClass()));
+		if (skeleton != lastBoundComponent) {
+			// if (lastBoundComponent) lastBoundComponent->BeforeUpdateWorldTransform.RemoveAll(this);
+			skeleton->BeforeUpdateWorldTransform.AddDynamic(this, &USpineBoneDriverComponent::BeforeUpdateWorldTransform);
+			lastBoundComponent = skeleton;
+		}		
+	}
+}
+

spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/Private/SpineBoneFollowerComponent.cpp

@@ -11,7 +11,6 @@ void USpineBoneFollowerComponent::BeginPlay () {
 	Super::BeginPlay();
 }
 
-
 void USpineBoneFollowerComponent::TickComponent ( float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction ) {
 	Super::TickComponent( DeltaTime, TickType, ThisTickFunction );
 

spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/Private/SpinePluginPrivatePCH.h

@@ -10,3 +10,4 @@
 #include "SpineSkeletonAnimationComponent.h"
 #include "SpineSkeletonRendererComponent.h"
 #include "SpineBoneFollowerComponent.h"
+#include "SpineBoneDriverComponent.h"

spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/Private/SpineSkeletonAnimationComponent.cpp

@@ -60,15 +60,15 @@ void USpineSkeletonAnimationComponent::TickComponent(float DeltaTime, ELevelTick
 	InternalTick(DeltaTime);
 }
 
-void USpineSkeletonAnimationComponent::InternalTick(float DeltaTime) {
+void USpineSkeletonAnimationComponent::InternalTick(float DeltaTime, bool CallDelegates) {
 	CheckState();
 
 	if (state) {
 		spAnimationState_update(state, DeltaTime);
 		spAnimationState_apply(state, skeleton);
-		BeforeUpdateWorldTransform.Broadcast(this);
+		if (CallDelegates) BeforeUpdateWorldTransform.Broadcast(this);
 		spSkeleton_updateWorldTransform(skeleton);
-		AfterUpdateWorldTransform.Broadcast(this);
+		if (CallDelegates) AfterUpdateWorldTransform.Broadcast(this);
 	}
 }
 

spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/Private/SpineSkeletonComponent.cpp

@@ -26,7 +26,7 @@ FTransform USpineSkeletonComponent::GetBoneWorldTransform (const FString& BoneNa
 	if (skeleton) {
 		spBone* bone = spSkeleton_findBone(skeleton, TCHAR_TO_UTF8(*BoneName));		
 		if (!bone) return FTransform();
-		if (!bone->appliedValid) this->InternalTick(0);		
+		if (!bone->appliedValid) this->InternalTick(0, false);		
 
 		// Need to fetch the renderer component to get world transform of actor plus
 		// offset by renderer component and its parent component(s). If no renderer
@@ -57,7 +57,9 @@ FTransform USpineSkeletonComponent::GetBoneWorldTransform (const FString& BoneNa
 void USpineSkeletonComponent::SetBoneWorldPosition (const FString& BoneName, const FVector& position) {
 	CheckState();
 	if (skeleton) {
-		spBone* bone = spSkeleton_findBone(skeleton, TCHAR_TO_UTF8(*BoneName));		
+		spBone* bone = spSkeleton_findBone(skeleton, TCHAR_TO_UTF8(*BoneName));
+		if (!bone) return;
+		if (!bone->appliedValid) this->InternalTick(0, false);
 
 		// Need to fetch the renderer component to get world transform of actor plus
 		// offset by renderer component and its parent component(s). If no renderer
@@ -71,9 +73,9 @@ void USpineSkeletonComponent::SetBoneWorldPosition (const FString& BoneName, con
 		}
 
 		baseTransform = baseTransform.Inverse();
-		baseTransform.TransformVector(position);
+		FVector localPosition = baseTransform.TransformVector(position);
 		float localX = 0, localY = 0;
-		spBone_worldToLocal(bone, position.X, position.Z, &localX, &localY);
+		spBone_worldToLocal(bone, localPosition.X, localPosition.Z, &localX, &localY);
 		bone->x = localX;
 		bone->y = localY;
 	}
@@ -132,13 +134,13 @@ void USpineSkeletonComponent::TickComponent (float DeltaTime, ELevelTick TickTyp
 	InternalTick(DeltaTime);
 }
 
-void USpineSkeletonComponent::InternalTick(float DeltaTime) {
+void USpineSkeletonComponent::InternalTick(float DeltaTime, bool CallDelegates) {
 	CheckState();
 
 	if (skeleton) {
-		BeforeUpdateWorldTransform.Broadcast(this);
+		if (CallDelegates) BeforeUpdateWorldTransform.Broadcast(this);
 		spSkeleton_updateWorldTransform(skeleton);
-		AfterUpdateWorldTransform.Broadcast(this);
+		if (CallDelegates) AfterUpdateWorldTransform.Broadcast(this);
 	}
 }
 

spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/Public/SpineBoneDriverComponent.h

@@ -0,0 +1,39 @@
+#pragma once
+
+#include "Components/ActorComponent.h"
+#include "SpineBoneDriverComponent.generated.h"
+
+class USpineSkeletonComponent;
+
+UCLASS(ClassGroup=(Custom), meta=(BlueprintSpawnableComponent))
+class SPINEPLUGIN_API USpineBoneDriverComponent : public UActorComponent {
+	GENERATED_BODY()
+
+public:
+	UPROPERTY(EditAnywhere, BlueprintReadWrite)
+	AActor* Target = 0;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite)
+	FString BoneName;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite)
+	bool UsePosition = true;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite)
+	bool UseRotation = true;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite)
+	bool UseScale = true;
+	
+	USpineBoneDriverComponent();
+	
+	virtual void BeginPlay() override;
+	
+	virtual void TickComponent( float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction ) override;
+
+protected:
+	UFUNCTION()
+	void BeforeUpdateWorldTransform(USpineSkeletonComponent* skeleton);
+
+	USpineSkeletonComponent* lastBoundComponent = nullptr;
+};

spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/Public/SpineSkeletonAnimationComponent.h

@@ -238,7 +238,7 @@ public:
 	void GCTrackEntry(UTrackEntry* entry) { trackEntries.Remove(entry); }
 protected:
 	virtual void CheckState () override;
-	virtual void InternalTick(float DeltaTime) override;
+	virtual void InternalTick(float DeltaTime, bool CallDelegates = true) override;
 	virtual void DisposeState () override;
 	
 	spAnimationState* state;

spine-ue4/Plugins/SpinePlugin/Source/SpinePlugin/Public/SpineSkeletonComponent.h

@@ -77,7 +77,7 @@ public:
 	
 protected:
 	virtual void CheckState ();
-	virtual void InternalTick(float DeltaTime);
+	virtual void InternalTick(float DeltaTime, bool CallDelegates = true);
 	virtual void DisposeState ();
 
 	spSkeleton* skeleton;