Fixed UE4.27 compilation errors

Author: BenPyton

Source/ProceduralDungeon/Private/DungeonGeneratorBase.cpp

@@ -183,7 +183,7 @@ bool ADungeonGeneratorBase::AddRoomToDungeon(URoom* const& Room, const TArray<in
 
 	bool bConnected = false;
 	// Connect the doors if provided, otherwise try to connect all possible doors
-	if (DoorsToConnect.IsEmpty())
+	if (DoorsToConnect.Num() <= 0)
 	{
 		bConnected = Room->TryConnectToExistingDoors(Graph->GetAllRooms());
 	}

Source/ProceduralDungeon/Private/RoomData.cpp

@@ -86,7 +86,7 @@ bool URoomData::HasAllDoorOfType(const TArray<UDoorType*>& DoorTypes) const
 	{
 		AllDoorTypes.Remove(Door.Type);
 	}
-	return AllDoorTypes.IsEmpty();
+	return AllDoorTypes.Num() <= 0;
 }
 
 bool URoomData::HasCustomData(TSubclassOf<URoomCustomData> CustomDataClass) const

Source/ProceduralDungeon/Private/Tests/Classes/RoomCustomDataChildClasses.h

@@ -25,19 +25,19 @@
 #include "RoomCustomData.h"
 #include "RoomCustomDataChildClasses.generated.h"
 
-UCLASS(NotBlueprintable, NotBlueprintType, Hidden, meta = (HiddenNode))
+UCLASS(NotBlueprintable, NotBlueprintType, HideDropdown, meta = (HiddenNode))
 class UCustomDataA : public URoomCustomData
 {
 	GENERATED_BODY()
 };
 
-UCLASS(NotBlueprintable, NotBlueprintType, Hidden, meta = (HiddenNode))
+UCLASS(NotBlueprintable, NotBlueprintType, HideDropdown, meta = (HiddenNode))
 class UCustomDataB : public URoomCustomData
 {
 	GENERATED_BODY()
 };
 
-UCLASS(NotBlueprintable, NotBlueprintType, Hidden, meta = (HiddenNode))
+UCLASS(NotBlueprintable, NotBlueprintType, HideDropdown, meta = (HiddenNode))
 class UCustomDataC : public URoomCustomData
 {
 	GENERATED_BODY()