UObjects

Add a button to the editor details panel

Using CallInEditor with UNFUNCTION allows you to put a button in the editor details panel.

UFUNCTION(CallInEditor, Category = "Ship")
void apply_asset_configuration();
A UFunction button in an actor's details panel
A UFunction button in an actor's details panel

Interfaces

I couldnā€™t make interfaces show up in the editor i.e.

UPROPERTY(EditAnywhere, Category = "Ship")
TScriptInterface<ITestEntity> target_ship{nullptr};

I tried to use a constrained AActor* using ObjectMustImplement however the filtering didnā€™t seem to work.

UPROPERTY(EditAnywhere,
          meta = (ObjectMustImplement = "/Script/Sandbox.TestEntity"),
          Category = "Ship")
TObjectPtr<AActor> target_ship{nullptr};

It seems using AActor* properties and CastChecked is the simplest solution.

auto const* const target_entity_interface{CastChecked<ITestEntity>(target)};
auto const target_handle{target_entity_interface->get_entity_handle()};

CastChecked

CastChecked<T> is a useful function.

It is equivalent to

auto foo{Cast<T>(bar)};
check(foo);