Carla Settings added to the plugin preferences. New section for quality added in the settings file.

Docs/Example.CarlaSettings.ini

@@ -105,3 +105,7 @@ PositionZ=140
 RotationPitch=0
 RotationYaw=0
 RotationRoll=0
+
+
+[CARLA/QualitySettings]
+DefaultLevel=Epic

Unreal/CarlaUE4/Config/DefaultEngine.ini

@@ -13,11 +13,10 @@ GameInstanceClass=/Script/Carla.CarlaGameInstance
 TransitionMap=/Game/Maps/Town01.Town01
 
 [/Script/Engine.RendererSettings]
-r.DefaultFeature.MotionBlur=False
+r.DefaultFeature.MotionBlur=0
-r.AllowStaticLighting=True
+r.AllowStaticLighting=1
-r.DiscardUnusedQuality=True
+r.DiscardUnusedQuality=1
-r.DefaultFeature.Bloom=False
+r.DefaultFeature.Bloom=0
-r.DefaultFeature.AmbientOcclusion=True
 r.DefaultFeature.AmbientOcclusion=0
 r.AmbientOcclusionLevels=0
 r.DefaultFeature.AmbientOcclusionStaticFraction=0

Unreal/CarlaUE4/Config/DefaultGame.ini

@@ -36,3 +36,6 @@ bSkipEditorContent=False
 bNativizeBlueprintAssets=False
 bNativizeOnlySelectedBlueprints=False
 
+[/Script/Carla.CarlaSettings]
+LowLightFadeDistance=1000.000000
+

Unreal/CarlaUE4/Plugins/Carla/Source/Carla/Carla.cpp

@@ -1,6 +1,10 @@
 // Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.
 
 #include "Carla.h"
+#include "ISettingsModule.h"
+#include "ISettingsSection.h"
+#include "ISettingsContainer.h"
+#include "Settings/CarlaSettings.h"
 
 #define LOCTEXT_NAMESPACE "FCarlaModule"
 
@@ -9,13 +13,73 @@ DEFINE_LOG_CATEGORY(LogCarlaServer);
 
 void FCarlaModule::StartupModule()
 {
-	// This code will execute after your module is loaded into memory; the exact timing is specified in the .uplugin file per-module
+	RegisterSettings();
 }
 
 void FCarlaModule::ShutdownModule()
 {
-	// This function may be called during shutdown to clean up your module.  For modules that support dynamic reloading,
+	if (UObjectInitialized())
-	// we call this function before unloading the module.
+	{
+		UnregisterSettings();
+	}
+}
+
+void FCarlaModule::RegisterSettings()
+{
+	// Registering some settings is just a matter of exposing the default UObject of
+	// your desired class, add here all those settings you want to expose
+	// to your LDs or artists.
+ 
+	if (ISettingsModule* SettingsModule = FModuleManager::GetModulePtr<ISettingsModule>("Settings"))
+	{
+		// Create the new category
+		ISettingsContainerPtr SettingsContainer = SettingsModule->GetContainer("Project");
+ 
+		SettingsContainer->DescribeCategory("CARLASettings",
+			LOCTEXT("RuntimeWDCategoryName", "CARLA Settings"),
+			LOCTEXT("RuntimeWDCategoryDescription", "CARLA plugin settings"));
+ 
+		// Register the settings
+		ISettingsSectionPtr SettingsSection = SettingsModule->RegisterSettings("Project", "CARLASettings", "General",
+			LOCTEXT("RuntimeGeneralSettingsName", "General"),
+			LOCTEXT("RuntimeGeneralSettingsDescription", "General configuration for the CARLA plugin"),
+			GetMutableDefault<UCarlaSettings>()
+		);
+ 
+		// Register the save handler to your settings, you might want to use it to
+		// validate those or just act to settings changes.
+		if (SettingsSection.IsValid())
+		{
+			SettingsSection->OnModified().BindRaw(this, &FCarlaModule::HandleSettingsSaved);
+		}
+	}
+}
+ 
+void FCarlaModule::UnregisterSettings()
+{
+	// Ensure to unregister all of your registered settings here, hot-reload would
+	// otherwise yield unexpected results.
+ 
+	if (ISettingsModule* SettingsModule = FModuleManager::GetModulePtr<ISettingsModule>("Settings"))
+	{
+		SettingsModule->UnregisterSettings("Project", "CustomSettings", "General");
+	}
+}
+
+bool FCarlaModule::HandleSettingsSaved()
+{
+	UCarlaSettings* Settings = GetMutableDefault<UCarlaSettings>();
+	bool ResaveSettings = false;
+ 
+	// Put any validation code in here and resave the settings in case an invalid
+	// value has been entered
+ 
+	if (ResaveSettings)
+	{
+		Settings->SaveConfig();
+	}
+ 
+	return true;
 }
 
 #undef LOCTEXT_NAMESPACE

Unreal/CarlaUE4/Plugins/Carla/Source/Carla/Carla.h

@@ -14,7 +14,7 @@ DECLARE_LOG_CATEGORY_EXTERN(LogCarlaServer, Log, All);
 // Options to compile with extra debug log.
 #if WITH_EDITOR
 // #define CARLA_AI_VEHICLES_EXTRA_LOG
-#define CARLA_AI_WALKERS_EXTRA_LOG
+// #define CARLA_AI_WALKERS_EXTRA_LOG
 // #define CARLA_ROAD_GENERATOR_EXTRA_LOG
 // #define CARLA_SERVER_EXTRA_LOG
 // #define CARLA_TAGGER_EXTRA_LOG
@@ -22,9 +22,15 @@ DECLARE_LOG_CATEGORY_EXTERN(LogCarlaServer, Log, All);
 
 class FCarlaModule : public IModuleInterface
 {
+	void RegisterSettings();
+	void UnregisterSettings();
+	bool HandleSettingsSaved();
+
+
 public:
 
 	/** IModuleInterface implementation */
 	virtual void StartupModule() override;
 	virtual void ShutdownModule() override;
+	
 };

Unreal/CarlaUE4/Plugins/Carla/Source/Carla/Settings/CarlaSettings.cpp

@@ -11,14 +11,22 @@
 #include "Settings/CameraDescription.h"
 #include "Settings/LidarDescription.h"
 #include "Util/IniFile.h"
-
+#include "Package.h"
 #include "CommandLine.h"
 #include "UnrealMathUtility.h"
+#include "Engine/Engine.h"
+#include "Kismet/GameplayStatics.h"
+#include "Engine/DirectionalLight.h"
+#include "Engine/PointLight.h"
+#include "Landscape.h"
+#include "Components/StaticMeshComponent.h"
+
 
 // INI file sections.
 #define S_CARLA_SERVER                 TEXT("CARLA/Server")
 #define S_CARLA_LEVELSETTINGS          TEXT("CARLA/LevelSettings")
 #define S_CARLA_SENSOR                 TEXT("CARLA/Sensor")
+#define S_CARLA_QUALITYSETTINGS        TEXT("CARLA/QualitySettings")
 
 // =============================================================================
 // -- Static methods -----------------------------------------------------------
@@ -104,6 +112,16 @@ static void LoadSettingsFromConfig(
   ConfigFile.GetInt(S_CARLA_LEVELSETTINGS, TEXT("WeatherId"), Settings.WeatherId);
   ConfigFile.GetInt(S_CARLA_LEVELSETTINGS, TEXT("SeedVehicles"), Settings.SeedVehicles);
   ConfigFile.GetInt(S_CARLA_LEVELSETTINGS, TEXT("SeedPedestrians"), Settings.SeedPedestrians);
+
+  // QualitySettings.
+  FString sDefaultLevel;
+  ConfigFile.GetString(S_CARLA_QUALITYSETTINGS, TEXT("DefaultLevel"), sDefaultLevel);
+  if(!Settings.SetQualitySettingsLevel(FQualitySettings::FromString(sDefaultLevel)))
+  {
+	  //ERROR! @TODO : fix settings
+  }
+
+
   // Sensors.
   FString Sensors;
   ConfigFile.GetString(S_CARLA_SENSOR, TEXT("Sensors"), Sensors);
@@ -135,6 +153,162 @@ static bool GetSettingsFilePathFromCommandLine(FString &Value)
 // -- UCarlaSettings -----------------------------------------------------------
 // =============================================================================
 
+EQualitySettingsLevel FQualitySettings::FromString(const FString& SQualitySettingsLevel)
+{
+	if(SQualitySettingsLevel.Equals("Low")) return EQualitySettingsLevel::Low;
+	if(SQualitySettingsLevel.Equals("Medium")) return EQualitySettingsLevel::Medium;
+	if(SQualitySettingsLevel.Equals("High")) return EQualitySettingsLevel::High;
+	if(SQualitySettingsLevel.Equals("Epic")) return EQualitySettingsLevel::Epic;
+
+	return EQualitySettingsLevel::None;
+}
+
+FString FQualitySettings::ToString(EQualitySettingsLevel QualitySettingsLevel)
+{
+  const UEnum* ptr = FindObject<UEnum>(ANY_PACKAGE, TEXT("EQualitySettingsLevel"), true);
+  if(!ptr)
+    return FString("Invalid");
+  return ptr->GetNameStringByIndex(static_cast<int32>(QualitySettingsLevel));
+}
+
+bool UCarlaSettings::SetQualitySettingsLevel(EQualitySettingsLevel newDefaultLevel)
+{
+	if(newDefaultLevel==EQualitySettingsLevel::None)
+	{
+		UE_LOG(LogCarla ,Warning, TEXT("Quality Settings Level not set!"));
+		return false;
+	}
+
+	/*if(newDefaultLevel!=DefaultQualitySettingsLevel)
+	{
+		return true;
+	}*/
+	UWorld *world = GetWorld();
+	
+	//set the quality settings now
+	switch(newDefaultLevel)
+	{
+	  case EQualitySettingsLevel::Low: {//r.SSR.qualitylaunch commands to lower quality settings
+		world->Exec(world,TEXT("r.DefaultFeature.MotionBlur 0"));
+		world->Exec(world,TEXT("r.DefaultFeature.Bloom 0"));
+		world->Exec(world,TEXT("r.DefaultFeature.AmbientOcclusion 0"));
+		world->Exec(world,TEXT("r.AmbientOcclusionLevels 0"));
+		world->Exec(world,TEXT("r.DefaultFeature.AmbientOcclusionStaticFraction 0"));
+		world->Exec(world,TEXT("r.DefaultFeature.AutoExposure 0"));
+		world->Exec(world,TEXT("r.RHICmdBypass 0"));
+		world->Exec(world,TEXT("r.DefaultFeature.AntiAliasing 2"));
+		world->Exec(world,TEXT("r.Streaming.PoolSize 2000"));
+		world->Exec(world,TEXT("r.HZBOcclusion 0"));
+		world->Exec(world,TEXT("r.MinScreenRadiusForLights 0.01"));
+		world->Exec(world,TEXT("r.SeparateTranslucency 0"));
+		world->Exec(world,TEXT("r.FinishCurrentFrame 1"));
+		world->Exec(world,TEXT("r.MotionBlurQuality 0"));
+		world->Exec(world,TEXT("r.PostProcessAAQuality 0"));
+		world->Exec(world,TEXT("r.BloomQuality 1"));
+		world->Exec(world,TEXT("r.SSR.Quality 0"));
+		world->Exec(world,TEXT("r.DepthOfFieldQuality 0"));
+		world->Exec(world,TEXT("r.SceneColorFormat 2"));
+		world->Exec(world,TEXT("r.TranslucencyVolumeBlur 0"));
+		world->Exec(world,TEXT("r.TranslucencyLightingVolumeDim 4"));
+		world->Exec(world,TEXT("r.MaxAnisotropy 8"));
+		world->Exec(world,TEXT("r.LensFlareQuality 0"));
+		world->Exec(world,TEXT("r.SceneColorFringeQuality 0"));
+		world->Exec(world,TEXT("r.FastBlurThreshold 0"));
+		world->Exec(world,TEXT("r.SSR.MaxRoughness 0.1"));
+		world->Exec(world,TEXT("r.AllowOcclusionQueries 1"));
+		world->Exec(world,TEXT("r.SSR 0"));
+		world->Exec(world,TEXT("r.StencilForLODDither 1"));
+		world->Exec(world,TEXT("r.EarlyZPass 1"));
+		world->Exec(world,TEXT("r.EarlyZPassMovable 1"));
+		world->Exec(world,TEXT("r.Foliage.DitheredLOD 0"));
+		world->Exec(world,TEXT("r.ForwardShading 0"));
+		world->Exec(world,TEXT("sg.PostProcessQuality 0"));
+	    world->Exec(world,TEXT("r.ViewDistanceScale 0.1"));
+		world->Exec(world,TEXT("sg.ShadowQuality 0"));
+		world->Exec(world,TEXT("sg.TextureQuality 0"));
+		world->Exec(world,TEXT("sg.EffectsQuality 0"));
+		world->Exec(world,TEXT("FoliageQuality 0"));
+		world->Exec(world,TEXT("foliage.DensityScale 0"));
+		world->Exec(world,TEXT("grass.DensityScale 0"));
+
+		//world->Exec(world,TEXT("r.DetailMode 0")); //-->will change to lods 0
+		//iterate all vehicles and people, set the draw distance 
+	    TArray<AActor*> actors;
+		int32 i;
+
+		//iterate all terrain, deactivate the actor
+		/*UGameplayStatics::GetAllActorsOfClass(world, ALandscape::StaticClass(), actors);
+		for(i=0; i<actors.Num(); i++)
+		{
+			ALandscape* landscape = Cast<ALandscape>(actors[i]);
+			if(landscape)
+			{
+				landscape->DisableComponentsSimulatePhysics();
+				landscape->bUseLandscapeForCullingInvisibleHLODVertices=true;
+				
+			}
+		}*/
+
+	    //iterate all lights, deactivate shadows
+		UGameplayStatics::GetAllActorsOfClass(world, ALight::StaticClass(), actors);
+		for(i=0;i<actors.Num();i++)
+		{
+			ALight *light = Cast<ALight>(actors[i]);
+			if(light)
+			{
+				//disable all lights shadows
+				light->SetCastShadows(false);
+
+				//tweak directional lights
+				ADirectionalLight* directionallight = Cast<ADirectionalLight>(light);
+				if(directionallight)
+				{
+					directionallight->SetLightFunctionFadeDistance(LowLightFadeDistance);
+				}
+
+				//disable point lights
+				APointLight* pointlight = Cast<APointLight>(light);
+				if(pointlight)
+				{
+					actors[i]->SetActorHiddenInGame(true);
+				}
+			}
+			
+		}
+		
+	    //Set all the roads the low quality material
+		/*UGameplayStatics::GetAllActorsWithTag(world, FName("CARLA_ROAD"),actors);
+		for(i=0; i<actors.Num(); i++)
+		{
+			TArray<UActorComponent*> components = actors[i]->GetComponentsByClass(UStaticMeshComponent::StaticClass());
+			for(int32 j=0; j<components.Num(); j++)
+			{
+				UStaticMeshComponent* staticmesh = Cast<UStaticMeshComponent>(components[j]);
+				if(staticmesh)
+				{
+					for(int32 k=0; k<staticmesh->GetNumMaterials(); k++)
+					{
+						if(!RoadMaterials.IsValidIndex(k)) break;
+						staticmesh->SetMaterial(k, Cast<UMaterialInterface>(RoadMaterials[k]));
+					}
+				}
+			}
+		}*/
+
+
+		break;
+	  }
+	  case EQualitySettingsLevel::Medium: break;
+	  case EQualitySettingsLevel::High: break;
+	  case EQualitySettingsLevel::Epic: break;
+	  
+	  default: ;
+	}
+	DefaultQualitySettingsLevel = newDefaultLevel;
+
+	return true;
+}
+
 void UCarlaSettings::LoadSettings()
 {
   CurrentFileName = TEXT("");
@@ -209,13 +383,18 @@ void UCarlaSettings::LogSettings() const
   UE_LOG(LogCarla, Log, TEXT("Seed Vehicle Spawner = %d"), SeedVehicles);
   UE_LOG(LogCarla, Log, TEXT("Seed Pedestrian Spawner = %d"), SeedPedestrians);
   UE_LOG(LogCarla, Log, TEXT("Found %d available weather settings."), WeatherDescriptions.Num());
-  for (auto i = 0; i < WeatherDescriptions.Num(); ++i) {
+  for (auto i = 0; i < WeatherDescriptions.Num(); ++i)
+  {
     UE_LOG(LogCarla, Log, TEXT("  * %d - %s"), i, *WeatherDescriptions[i].Name);
   }
+  UE_LOG(LogCarla, Log, TEXT("[%s]"), S_CARLA_QUALITYSETTINGS);
+  UE_LOG(LogCarla, Log, TEXT("Default Quality Settings = %s"), *FQualitySettings::ToString(DefaultQualitySettingsLevel));
+
   UE_LOG(LogCarla, Log, TEXT("[%s]"), S_CARLA_SENSOR);
   UE_LOG(LogCarla, Log, TEXT("Added %d sensors."), SensorDescriptions.Num());
   UE_LOG(LogCarla, Log, TEXT("Semantic Segmentation = %s"), EnabledDisabled(bSemanticSegmentationEnabled));
-  for (auto &&Sensor : SensorDescriptions) {
+  for (auto &&Sensor : SensorDescriptions) 
+  {
     check(Sensor.Value != nullptr);
     Sensor.Value->Log();
   }

Unreal/CarlaUE4/Plugins/Carla/Source/Carla/Settings/CarlaSettings.h

@@ -12,15 +12,44 @@
 
 #include "CarlaSettings.generated.h"
 
-class USensorDescription;
+UENUM(BlueprintType)
+enum class EQualitySettingsLevel : uint8
+{
+  None    UMETA(DisplayName = "Not set"),
+  Low     UMETA(DisplayName = "Low"),
+  Medium  UMETA(DisplayName = "Medium"),
+  High    UMETA(DisplayName = "High"),
+  Epic    UMETA(DisplayName = "Epic") ,
+	
+};
 
-/// Global settings for CARLA.
+class CARLA_API FQualitySettings 
-UCLASS()
+{
+public:
+ using uint_type = typename std::underlying_type<EQualitySettingsLevel>::type;
+ static EQualitySettingsLevel FromString(const FString &SQualitySettingsLevel);
+ static FString ToString(EQualitySettingsLevel QualitySettingsLevel);
+ static constexpr uint_type ToUInt(EQualitySettingsLevel quality_settings_level)
+ {
+   return static_cast<uint_type>(quality_settings_level);
+ }
+};
+
+class USensorDescription;
+class UMaterial;
+/** Global settings for CARLA.
+ * Setting object used to hold both config settings and editable ones in one place
+ * To ensure the settings are saved to the specified config file make sure to add
+ * props using the globalconfig or config meta.
+ */
+UCLASS(config = Game, defaultconfig)
 class CARLA_API UCarlaSettings : public UObject
 {
   GENERATED_BODY()
 
 public:
+  /** Sets the new quality settings level and make changes in the game related to it. Returns the reuslt of the operation */
+  bool SetQualitySettingsLevel(EQualitySettingsLevel newDefaultLevel);
 
   /** Load the settings based on the command-line arguments and the INI file if provided. */
   void LoadSettings();
@@ -64,7 +93,8 @@ private:
   UPROPERTY(Category = "CARLA Settings|Debug", VisibleAnywhere)
   FString CurrentFileName;
 
-  // ===========================================================================
+
+	// ===========================================================================
   /// @name CARLA Server
   // ===========================================================================
   /// @{
@@ -127,7 +157,29 @@ public:
   UPROPERTY(Category = "Level Settings", VisibleAnywhere)
   int32 SeedVehicles = 123456789;
 
+  
   /// @}
+
+  // ===========================================================================
+  /// @name Quality Settings
+  // ===========================================================================
+  /// @{
+public:
+  /** Quality Settings level. */
+  UPROPERTY(Category = "Quality Settings", VisibleAnywhere)
+  EQualitySettingsLevel DefaultQualitySettingsLevel = EQualitySettingsLevel::None;
+
+
+  //UPROPERTY(Category = "Quality Settings", EditAnywhere, config)
+  //TArray<UMaterial*> RoadMaterials;
+
+  //distances
+  UPROPERTY(Category = "Quality Settings/Low", EditAnywhere, config)
+  float LowLightFadeDistance;
+
+
+  /// @}
+
   // ===========================================================================
   /// @name Sensors
   // ===========================================================================