I wrote a BTTaskNode that worked correctly with one character in my scene. However, after I added another character of the same class to my scene, everything broke. One character just stands still and does nothing, while the other character goes in a different direction than I indicated. I tried logging the start and target character positions, and they are calculated correctly. After that, I tried to rewrite my node, and instead of moving, it simply teleported by using SetActorLocation. However, after this, both of my characters teleported to the same place and much further than I indicated. I tried asking ChatGPT and searching for a solution in forums, but I couldn’t find a case similar to mine.
Original code:
// Fill out your copyright notice in the Description page of Project Settings.
include “BTTask_MoveToWithoutRotation.h”
include “Math/UnrealMathUtility.h”
include “BehaviorTree/BlackboardComponent.h”
include “AIController.h”
UBTTask_MoveToWithoutRotation::UBTTask_MoveToWithoutRotation()
{
NodeName = “Move to target without changing rotation”;
bNotifyTick = true;
}
EBTNodeResult::Type UBTTask_MoveToWithoutRotation::ExecuteTask(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory)
{
Super::ExecuteTask(OwnerComp, NodeMemory);
OwnerAIController = OwnerComp.GetAIOwner();
OwnerPawn = OwnerAIController->GetPawn();
if (OwnerPawn == nullptr || OwnerAIController == nullptr)
{
return EBTNodeResult::Failed;
}
return EBTNodeResult::InProgress;
}
void UBTTask_MoveToWithoutRotation::TickTask(UBehaviorTreeComponent& OwnerComp, uint8* NodeMemory, float DeltaSeconds)
{
Super::TickTask(OwnerComp, NodeMemory, DeltaSeconds);
FVector CurrentLocation = OwnerPawn->GetActorLocation();
FVector TargetLocation = OwnerComp.GetBlackboardComponent()->GetValueAsVector(GetSelectedBlackboardKey());
FVector ToSetLocation = FMath::VInterpConstantTo(CurrentLocation,
TargetLocation,
DeltaSeconds,
MovingSpeed
);
if (FVector::Dist(CurrentLocation, TargetLocation) <= 1)
{
FinishLatentTask(OwnerComp, EBTNodeResult::Succeeded);
}
OwnerPawn->SetActorLocation(ToSetLocation);
}