VoxelForge/Source/VoxelForge/Private/Tests/VoxelForgeParameterizedGenerationTest.cpp

#if WITH_DEV_AUTOMATION_TESTS

#include "Misc/AutomationTest.h"

#include "VoxelForgeTestFixture.h"
#include "VoxelRedefinedDensityField.h"
#include "VoxelStrateMeasure.h"

IMPLEMENT_SIMPLE_AUTOMATION_TEST(
    FVoxelForgeParameterizedGenerationTraversalSeedsTest,
    "VoxelForge.ParameterizedGeneration.TraversalSeeds",
    EAutomationTestFlags::EditorContext | EAutomationTestFlags::EngineFilter)

bool FVoxelForgeParameterizedGenerationTraversalSeedsTest::RunTest(const FString& Parameters)
{
    (void)Parameters;
    struct FRestoreResearchFields
    {
        bool bWasParameterizedEnabled = VoxelForgeRedefinedDensityField::IsParameterizedEnabled();
        bool bWasRedefinedEnabled = VoxelForgeRedefinedDensityField::IsEnabled();
        int32 PreviousSet = VoxelForgeRedefinedDensityField::GetParameterSet();
        float PreviousScale = VoxelForgeRedefinedDensityField::GetDetailScale();
        ~FRestoreResearchFields()
        {
            VoxelForgeRedefinedDensityField::SetDetailScale(PreviousScale);
            VoxelForgeRedefinedDensityField::SetParameterSet(PreviousSet);
            VoxelForgeRedefinedDensityField::SetEnabled(bWasRedefinedEnabled);
            VoxelForgeRedefinedDensityField::SetParameterizedEnabled(bWasParameterizedEnabled);
        }
    } Restore;
    VoxelForgeRedefinedDensityField::SetEnabled(false);
    VoxelForgeRedefinedDensityField::SetParameterizedEnabled(true);
    VoxelForgeRedefinedDensityField::SetParameterSet(-1);
    VoxelForgeRedefinedDensityField::SetDetailScale(1.0f);

    constexpr int32 Seeds[] = {1337, 12345, 20260930};
    int32 CheckedLandings = 0;
    int32 CheckedRoutes = 0;
    int32 RoutesWithResolvedEndpoints = 0;
    for (const int32 Seed : Seeds)
    {
        VoxelForgeTest::FTestWorld World;
        World.Build(Seed, /*InGapChunks=*/2, /*InStrateHeightInChunks=*/4);
        if (!World.IsValid())
        {
            AddError(FString::Printf(
                TEXT("Seed %d: test world did not build: %s"), Seed, *World.WhyInvalid()));
            return false;
        }

        const TArray<FStrateSlot>& Layout = World.StrateManager->GetLayout();
        const TArray<FVoxelPassage>& Passages = World.StrateManager->GetPassages();
        for (const FVoxelPassage& Passage : Passages)
        {
            if (Passage.UpperStrateIndex == Passage.LowerStrateIndex)
            {
                continue;
            }
            const FVector UpperAir = Passage.UpperLanding.StandingPoint;
            const FVector LowerAir = Passage.LowerLanding.StandingPoint;
            const float UpperDensity = World.Generator->GetDensityAt(
                UpperAir.X, UpperAir.Y, UpperAir.Z);
            const float UpperFooting = World.Generator->GetDensityAt(
                UpperAir.X, UpperAir.Y, Passage.UpperLanding.FloorZ - 0.75f);
            const float LowerDensity = World.Generator->GetDensityAt(
                LowerAir.X, LowerAir.Y, LowerAir.Z);
            const float LowerFooting = World.Generator->GetDensityAt(
                LowerAir.X, LowerAir.Y, Passage.LowerLanding.FloorZ - 0.75f);
            ++CheckedLandings;
            if (!FMath::IsFinite(UpperDensity) || !FMath::IsFinite(UpperFooting)
                || !FMath::IsFinite(LowerDensity) || !FMath::IsFinite(LowerFooting)
                || UpperDensity <= 0.0f || LowerDensity <= 0.0f
                || UpperFooting >= 0.0f || LowerFooting >= 0.0f)
            {
                AddError(FString::Printf(
                    TEXT("Parameterized model seed %d: passage %d landing failed the final-field "
                         "air/floor bracket (upper %.4f/%.4f, lower %.4f/%.4f)."),
                    Seed, CheckedLandings - 1, UpperDensity, UpperFooting,
                    LowerDensity, LowerFooting));
            }
        }

        for (int32 StrateIndex = 0; StrateIndex < Layout.Num(); ++StrateIndex)
        {
            FVector Arrival = FVector::ZeroVector;
            FVector Departure = FVector::ZeroVector;
            bool bHasArrival = false;
            bool bHasDeparture = false;
            for (const FVoxelPassage& Passage : Passages)
            {
                if (Passage.UpperStrateIndex == Passage.LowerStrateIndex)
                {
                    continue;
                }
                if (Passage.LowerStrateIndex == StrateIndex && !bHasArrival)
                {
                    Arrival = Passage.LowerLanding.StandingPoint;
                    bHasArrival = true;
                }
                if (Passage.UpperStrateIndex == StrateIndex && !bHasDeparture)
                {
                    Departure = Passage.UpperLanding.StandingPoint;
                    bHasDeparture = true;
                }
            }
            if (!bHasArrival || !bHasDeparture)
            {
                continue;
            }

            FVoxelStrateMeasureSettings Settings;
            Settings.SampleStep = 4;
            Settings.RadiusInVoxels = 192;
            Settings.CenterXY = FVector2D(
                (Arrival.X + Departure.X) * 0.5f,
                (Arrival.Y + Departure.Y) * 0.5f);
            Settings.MaxCells = 4000000;
            Settings.HeadroomCells = 2;
            const FVoxelConnectivityDiagnostics Route = VF_DiagnoseConnectivity(
                *World.Generator, *World.StrateManager, StrateIndex,
                Arrival, Departure, Settings);
            ++CheckedRoutes;
            RoutesWithResolvedEndpoints += Route.bStartSnapped || Route.bGoalSnapped;
            if (!Route.bValid || Route.Result != EVoxelConnectivityResult::Connected)
            {
                AddError(FString::Printf(
                    TEXT("Parameterized model seed %d strate %d (%s): arrival-to-exit walking "
                         "route was not connected (result=%d, valid=%s, start resolved=%s, "
                         "goal resolved=%s)."),
                    Seed, StrateIndex,
                    Layout[StrateIndex].Definition
                        ? *Layout[StrateIndex].Definition->GetName() : TEXT("no definition"),
                    static_cast<int32>(Route.Result),
                    Route.bValid ? TEXT("yes") : TEXT("no"),
                    Route.bStartSnapped ? TEXT("yes") : TEXT("no"),
                    Route.bGoalSnapped ? TEXT("yes") : TEXT("no")));
            }
        }
    }

    TestTrue(TEXT("Several seeds exercised parameterized passage landings"), CheckedLandings >= 6);
    TestTrue(TEXT("Several seeds exercised parameterized arrival-to-exit walking"), CheckedRoutes >= 6);
    AddInfo(FString::Printf(
        TEXT("Parameterized generation functional sweep: %d inter-strate passage landings "
             "bracketed open air over %d seeds; %d arrival-to-exit walking routes checked; "
             "%d used a resolved coarse endpoint after the full-density segment check."),
        CheckedLandings, UE_ARRAY_COUNT(Seeds), CheckedRoutes, RoutesWithResolvedEndpoints));
    return CheckedLandings >= 6 && CheckedRoutes >= 6;
}

#endif // WITH_DEV_AUTOMATION_TESTS