Prediction Sense Doesn't Work When Character Jumps

Development Programming & Scripting AI
, ,
1

Normally, Prediction sense works quite well, but it stops working whenever the character jumps. The reason is probably that it detects the PredictedLocation at a point that’s quite far below and outside the NavMesh bounds. To solve this, I tried using the ProjectPointToNavigation function, and i even added an extra value to the Z-axis, hoping it might help, but it still didn’t work. How to solve this problem?

Here is the first code:

if (Stimulus.Type == SensePredictionID)
{
    if (Stimulus.WasSuccessfullySensed())
    {
        FVector PredictedLocation = Stimulus.StimulusLocation;

            DrawDebugSphere(GetWorld(), PredictedLocation, 30.f, 18.f, FColor::Red, false, 7.f, 0.f, 0.3f);

            BlackboardComp->SetValueAsVector(FName("PredictedLocation"), PredictedLocation);
        }
 
    }
    else
    {
        UE_LOG(LogTemp, Warning,TEXT("Prediction sense didn't work"))
    }
}

And here is the second code:

if (Stimulus.Type == SensePredictionID)
{
    if (Stimulus.WasSuccessfullySensed())
    {
        FVector PredictedLocation = Stimulus.StimulusLocation;

        //DrawDebugSphere(GetWorld(), PredictedLocation, 30.f, 18.f, FColor::Red, false, 7.f, 0.f, 0.3f);

        FNavLocation NavLocation;
        bool OnNavigationMesh = UNavigationSystemV1::GetCurrent(GetWorld())->ProjectPointToNavigation(PredictedLocation, NavLocation);
        

        if (OnNavigationMesh)
        {
            FVector Z(0.f, 0.f, 120.f);
            FVector RealPredictedLocation = NavLocation.Location + Z;

            
            DrawDebugSphere(GetWorld(), RealPredictedLocation, 30.f, 18.f, FColor::Red, false, 7.f, 0.f, 0.3f);

            BlackboardComp->SetValueAsVector(FName("PredictedLocation"), RealPredictedLocation);
        }

        
    }
    else
    {
        UE_LOG(LogTemp, Warning,TEXT("Prediction sense didn't work"))
    }
}
2

Hi. I couldn’t solve this problem in a general way, but I found a simple temporary solution that works. I thought I’d share it in case someone else runs into the same issue in the future.
The idea is simple: we just set the Z vector the PredictedLocation equal to the Z vector of our PlayerCharacter.

Code:

if (Stimulus.Type == SensePredictionID)
{
    if (Stimulus.WasSuccessfullySensed())
    {
        
        FVector PredictedLocation = Stimulus.StimulusLocation;
        FVector PlayerCharacterLoc;

        PlayerCharacterLoc = PlayerCharacter->GetActorLocation();

        PredictedLocation.Z = PlayerCharacterLoc.Z;

        DrawDebugSphere(GetWorld(), PredictedLocation, 30.f, 18.f, FColor::Red, false, 7.f, 0.f, 0.3f);
        BlackboardComp->SetValueAsVector(FName("PredictedLocation"), PredictedLocation);
    }
    else
    {
        UE_LOG(LogTemp, Warning,TEXT("Prediction sense didn't work"))
    }
}