More work on Actor components

Plugins/UEWingman/Source/UEWingman/Handlers/ActorComponent_Remove.h

@@ -1,12 +1,10 @@
 #pragma once
 
 #include "CoreMinimal.h"
-#include "WingServer.h"
 #include "WingHandler.h"
 #include "WingFetcher.h"
-#include "WingUtils.h"
-#include "Engine/SCS_Node.h"
-#include "Engine/SimpleConstructionScript.h"
+#include "WingServer.h"
+#include "WingActorComponent.h"
 #include "ActorComponent_Remove.generated.h"
 
 
@@ -31,25 +29,11 @@ public:
 	virtual void Handle() override
 	{
 		WingFetcher F;
-		USCS_Node* Node = F.Walk(Component).Cast<USCS_Node>();
-		if (!Node) return;
+		UWingComponentReference* CompRef = F.Walk(Component).Cast<UWingComponentReference>();
+		if (!CompRef) return;
 
-		USimpleConstructionScript* SCS = Node->GetSCS();
-		if (!SCS) return;
+		if (!CompRef->DeleteComponent()) return;
 
-		// Prevent removing a root component that has children
-		const TArray<USCS_Node*>& RootNodes = SCS->GetRootNodes();
-		if (RootNodes.Contains(Node) && Node->GetChildNodes().Num() > 0)
-		{
-			UWingServer::Printf(TEXT("ERROR: Cannot remove '%s' — it is a root component with %d children. "
-				"Remove or re-parent the children first.\n"),
-				*WingUtils::FormatName(Node),
-				Node->GetChildNodes().Num());
-			return;
-		}
-
-		FString RemovedName = WingUtils::FormatName(Node);
-		SCS->RemoveNodeAndPromoteChildren(Node);
-		UWingServer::Printf(TEXT("Removed component %s.\n"), *RemovedName);
+		UWingServer::Printf(TEXT("Removed component.\n"));
 	}
 };

Plugins/UEWingman/Source/UEWingman/Private/WingActorComponent.cpp

@@ -40,6 +40,16 @@ UWingComponentReference::FoundComponent UWingComponentReference::FindComponent(U
 	return Result;
 }
 
+bool UWingComponentReference::CheckExists(UWingComponentReference::FoundComponent FC)
+{
+	if ((FC.SCS == nullptr) && (FC.Native == nullptr))
+	{
+		UWingServer::Printf(TEXT("Cannot find component: %s\n"), *WingUtils::SanitizeName(FC.Name));
+		return false;
+	}
+	return true;
+}
+
 bool UWingComponentReference::CheckValidParent(UWingComponentReference::FoundComponent FC)
 {
 	if (FC.SCS && FC.Native)
@@ -74,6 +84,28 @@ bool UWingComponentReference::CheckNoSuchComponent(FoundComponent FC)
 	return true;
 }
 
+bool UWingComponentReference::CheckNotNative(FoundComponent FC, const TCHAR *Action)
+{
+	if (FC.Native != nullptr)
+	{
+		UWingServer::Printf(TEXT("Component %s is native, cannot %s native components"),
+			*WingUtils::SanitizeName(FC.Name), Action);
+		return false;
+	}
+	return true;
+}
+
+bool UWingComponentReference::CheckOwnedByBlueprint(FoundComponent FC, UBlueprint *BP)
+{
+	if ((FC.SCS == nullptr) || (FC.SCS->GetSCS() != BP->SimpleConstructionScript))
+	{
+		UWingServer::Printf(TEXT("Component %s belongs to blueprint %s, edit that blueprint instead"),
+			*WingUtils::SanitizeName(FC.Name), *WingUtils::FormatName(FC.SCS->GetSCS()->GetBlueprint()));
+		return false;
+	}
+	return true;
+}
+
 bool UWingComponentReference::CheckValidComponentClass(UClass *Class)
 {
 	if (!Class->IsChildOf(UActorComponent::StaticClass()))
@@ -85,6 +117,7 @@ bool UWingComponentReference::CheckValidComponentClass(UClass *Class)
 	return true;
 }
 
+
 void UWingComponentReference::AddChildNode(UBlueprint *BP, USCS_Node *NewNode, FoundComponent Parent)
 {
 	if (Parent.SCS)
@@ -131,18 +164,10 @@ bool UWingComponentReference::ReparentComponent(UWingComponentReference *Parent)
 	FoundComponent ParentComponent = FindComponent(BP, Parent->VariableName);
 	if (!CheckValidParent(ParentComponent)) return false;
 	FoundComponent ThisComponent = FindComponent(BP, VariableName);
+	if (!CheckExists(ThisComponent)) return false;
+	if (!CheckNotNative(ThisComponent, TEXT("reparent"))) return false;
+	if (!CheckOwnedByBlueprint(ThisComponent, BP)) return false;
 
-	if (ThisComponent.SCS == nullptr)
-	{
-		UWingServer::Printf(TEXT("Cannot reparent native components."));
-		return false;
-	}
-	if (ThisComponent.SCS->GetSCS() != BP->SimpleConstructionScript)
-	{
-		UWingServer::Printf(TEXT("Component belongs to blueprint %s, edit that blueprint to reparent it."),
-			*WingUtils::FormatName(ThisComponent.SCS->GetSCS()->GetBlueprint()));
-		return false;
-	}
 	if (ParentComponent.SCS && ParentComponent.SCS->IsChildOf(ThisComponent.SCS))
 	{
 		UWingServer::Printf(TEXT("Cannot parent a component to itself or its own child."));
@@ -154,6 +179,16 @@ bool UWingComponentReference::ReparentComponent(UWingComponentReference *Parent)
 	return true;
 }
 
+bool UWingComponentReference::DeleteComponent()
+{
+	FoundComponent ThisComponent = FindComponent(BP, VariableName);
+	if (!CheckExists(ThisComponent)) return false;
+	if (!CheckNotNative(ThisComponent, TEXT("delete"))) return false;
+	if (!CheckOwnedByBlueprint(ThisComponent, BP)) return false;
+	BP->SimpleConstructionScript->RemoveNodeAndPromoteChildren(ThisComponent.SCS);
+	return true;
+}
+
 TMap<FName, FName> UWingComponentReference::CalculateParentNames(USimpleConstructionScript *Script)
 {
 	TMap<FName, FName> ParentNames;

Plugins/UEWingman/Source/UEWingman/Public/WingActorComponent.h

@@ -60,7 +60,10 @@ private:
 	static USCS_Node* FindSCSNodeByName(UBlueprint *BP, FName VariableName);
 	static FoundComponent FindComponent(UBlueprint *BP, FName Name);
 	static bool CheckValidParent(FoundComponent FC);
+	static bool CheckExists(FoundComponent FC);
 	static bool CheckNoSuchComponent(FoundComponent FC);
+	static bool CheckNotNative(FoundComponent FC, const TCHAR *Action);
+	static bool CheckOwnedByBlueprint(FoundComponent FC, UBlueprint *BP);
 	static void AddChildNode(UBlueprint *BP, USCS_Node *Node, FoundComponent Parent);
 	static TMap<FName, FName> CalculateParentNames(USimpleConstructionScript *Script);
 };