I have a simple hello world c++ plugin working, but it breaks when i include GameFramework/Actor.h with the error below. What is the correct way to define new UObjects in a plugin, what includes or build options am i missing?
[1/3] Compile Module.MyPlugin.cpp
In file included from /home/raptor/Documents/Unreal Projects/MyProject/Plugins/MyPlugin/Intermediate/Build/Linux/B4D820EA/UE4Editor/Development/MyPlugin/Module.MyPlugin.cpp:2:
In file included from /home/raptor/Documents/Unreal Projects/MyProject/Plugins/MyPlugin/Source/MyPlugin/Private/MyPlugin.cpp:6:
In file included from ../../../Documents/Unreal Projects/MyProject/Plugins/MyPlugin/Source/MyPlugin/Public/IMyPlugin.h:325:
In file included from Runtime/Engine/Classes/GameFramework/Actor.h:4:
Runtime/Engine/Public/ComponentInstanceDataCache.h:39:100: error: member access into incomplete type 'const UObject'
const UClass* GetComponentClass() const { return SourceComponentTemplate ? SourceComponentTemplate->GetClass() : nullptr; }
^
Runtime/Core/Public/Misc/Timespan.h:11:7: note: forward declaration of 'UObject'
class UObject;
^
In file included from /home/raptor/Documents/Unreal Projects/MyProject/Plugins/MyPlugin/Intermediate/Build/Linux/B4D820EA/UE4Editor/Development/MyPlugin/Module.MyPlugin.cpp:2:
In file included from /home/raptor/Documents/Unreal Projects/MyProject/Plugins/MyPlugin/Source/MyPlugin/Private/MyPlugin.cpp:6:
In file included from ../../../Documents/Unreal Projects/MyProject/Plugins/MyPlugin/Source/MyPlugin/Public/IMyPlugin.h:325:
In file included from Runtime/Engine/Classes/GameFramework/Actor.h:4:
Runtime/Engine/Public/ComponentInstanceDataCache.h:39:102: error: expected ':'
const UClass* GetComponentClass() const { return SourceComponentTemplate ? SourceComponentTemplate->GetClass() : nullptr; }
^
:
Runtime/Engine/Public/ComponentInstanceDataCache.h:39:75: note: to match this '?'
const UClass* GetComponentClass() const { return SourceComponentTemplate ? SourceComponentTemplate->GetClass() : nullptr; }
^
Runtime/Engine/Public/ComponentInstanceDataCache.h:39:102: error: use of undeclared identifier 'GetClass'
const UClass* GetComponentClass() const { return SourceComponentTemplate ? SourceComponentTemplate->GetClass() : nullptr; }
^
Runtime/Engine/Public/ComponentInstanceDataCache.h:84:8: error: use of undeclared identifier 'USceneComponent'
TMap< USceneComponent*, FTransform > InstanceComponentTransformToRootMap;
^
Runtime/Engine/Public/ComponentInstanceDataCache.h:84:24: error: expected expression
TMap< USceneComponent*, FTransform > InstanceComponentTransformToRootMap;
^
In file included from /home/raptor/Documents/Unreal Projects/MyProject/Plugins/MyPlugin/Intermediate/Build/Linux/B4D820EA/UE4Editor/Development/MyPlugin/Module.MyPlugin.cpp:2:
In file included from /home/raptor/Documents/Unreal Projects/MyProject/Plugins/MyPlugin/Source/MyPlugin/Private/MyPlugin.cpp:6:
In file included from ../../../Documents/Unreal Projects/MyProject/Plugins/MyPlugin/Source/MyPlugin/Public/IMyPlugin.h:325:
In file included from Runtime/Engine/Classes/GameFramework/Actor.h:5:
In file included from Runtime/Engine/Classes/Components/SceneComponent.h:4:
In file included from Runtime/Engine/Classes/Components/ActorComponent.h:4:
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:18:1: error: C++ requires a type specifier for all declarations
UENUM()
^
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:18:8: error: expected ';' after top level declarator
UENUM()
^
;
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:29:1: error: C++ requires a type specifier for all declarations
UENUM()
^
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:29:8: error: expected ';' after top level declarator
UENUM()
^
;
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:44:1: error: C++ requires a type specifier for all declarations
UENUM()
^
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:44:8: error: expected ';' after top level declarator
UENUM()
^
;
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:69:1: error: unknown type name 'UENUM'
UENUM(BlueprintType)
^
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:69:21: error: expected ';' after top level declarator
UENUM(BlueprintType)
^
;
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:73:15: error: missing ',' between enumerators
TG_PrePhysics UMETA(DisplayName="Pre Physics"),
^
,
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:73:21: error: expected '= constant-expression' or end of enumerator definition
TG_PrePhysics UMETA(DisplayName="Pre Physics"),
^
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:76:17: error: missing ',' between enumerators
TG_StartPhysics UMETA(Hidden, DisplayName="Start Physics"),
^
,
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:76:18: error: redefinition of enumerator 'UMETA'
TG_StartPhysics UMETA(Hidden, DisplayName="Start Physics"),
^
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:73:16: note: previous definition is here
TG_PrePhysics UMETA(DisplayName="Pre Physics"),
^
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:76:23: error: expected '= constant-expression' or end of enumerator definition
TG_StartPhysics UMETA(Hidden, DisplayName="Start Physics"),
^
Runtime/Engine/Classes/Engine/EngineBaseTypes.h:79:18: error: missing ',' between enumerators
TG_DuringPhysics UMETA(DisplayName="During Physics"),
^
,
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.