Trying to use AI MoveTo Node to move ai but in c++ but do not know how
i am not sure but found this function:
UAIAsyncTaskBlueprintProxy* UAIBlueprintHelperLibrary::CreateMoveToProxyObject(UObject* WorldContextObject, APawn* Pawn, FVector Destination, AActor* TargetActor, float AcceptanceRadius, bool bStopOnOverlap)
under Source\Runtime\AIModule\Private\Blueprint\AIBlueprintHelperLibrary.cpp.
And also Do Not Know how should i implement OnSuccess and OnFail Output of this function.
This blueprint function behaves differently than the c++ functions since it returns an async task. That blueprint version is blueprint internal, so you can’t use it directly in c++.
Instead, you can use any of the following. The first one is the closest function to the blueprint one, and the most powerful:
FPathFollowingRequestResult AAIController::MoveTo(const FAIMoveRequest& MoveRequest, FNavPathSharedPtr* OutPath)EPathFollowingRequestResult::Type AAIController::MoveToActor(AActor* Goal, float AcceptanceRadius, bool bStopOnOverlap, bool bUsePathfinding, bool bCanStrafe, TSubclassOf<UNavigationQueryFilter> FilterClass, bool bAllowPartialPaths)EPathFollowingRequestResult::Type AAIController::MoveToLocation(const FVector& Dest, float AcceptanceRadius, bool bStopOnOverlap, bool bUsePathfinding, bool bProjectDestinationToNavigation, bool bCanStrafe, TSubclassOf<UNavigationQueryFilter> FilterClass, bool bAllowPartialPaths)They return an enum or a struct that should have the info you need.
The enum:
UENUM(BlueprintType)
namespace EPathFollowingRequestResult
{
enum Type
{
Failed,
AlreadyAtGoal,
RequestSuccessful
};
}
The struct:
struct AIMODULE_API FPathFollowingRequestResult
{
FAIRequestID MoveId;
TEnumAsByte<EPathFollowingRequestResult::Type> Code;
FPathFollowingRequestResult() : MoveId(FAIRequestID::InvalidRequest), Code(EPathFollowingRequestResult::Failed) {}
operator EPathFollowingRequestResult::Type() const { return Code; }
};
It looks like there’s a function that gets called when a move is completed that you can use in AAIController:
virtual void OnMoveCompleted(FAIRequestID RequestID, const FPathFollowingResult& Result);
There’s also a delegate that gets fired by that function:
FAIMoveCompletedSignature ReceiveMoveCompleted
Can you please provide some example for implementing it.
This should work. Haven’t tested it though. Make sure OnAIMoveCompleted is declared as a UFUNCTION.
void AMyAIController::MoveToDestination(const FVector& DestinationLocation)
{
FAIMoveRequest MoveRequest;
MoveRequest.SetGoalLocation(DestinationLocation);
OnMoveCompleted.AddDynamic(this, &AMyAIController::OnAIMoveCompleted);
FPathFollowingRequestResult MoveResult = MoveTo(MoveRequest, nullptr);
if (MoveResult.Code == EPathFollowingRequestResult::RequestSuccessful)
{
UE_LOG(LogTemp, Warning, TEXT("MoveTo request successful!"));
}
else
{
UE_LOG(LogTemp, Error, TEXT("MoveTo request failed"));
}
}
void AMyAIController::OnAIMoveCompleted(FAIRequestID RequestID, EPathFollowingResult::Type Result)
{
if (Result == EPathFollowingResult::Success)
{
UE_LOG(LogTemp, Warning, TEXT("Move completed successfully!"));
}
else
{
UE_LOG(LogTemp, Warning, TEXT("Move completed, but failed"));
}
OnMoveCompleted.RemoveDynamic(this, &AMyAIController::OnAIMoveCompleted);
}
can you please tell me where to call MoveToDestination.
Does the AI that owns it automatically call this function?
i tried to GetController in a AI and cast it to AIController but it failed.
No, this function is one that I made.
In the above example, AMyAIController is an extended class of AAIController, and you would put the function in the extended class.
Yes, you’re right.it will leads to a situation that i have to get AI and write AI move function in AMyAIController. it should work just fine. but it feels a little weird for me to write AI logical code in AIController . hahahahha