ActorWithRandomEngine.h

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// Copyright (c) 2017 Computer Vision Center (CVC) at the Universitat Autonoma
// de Barcelona (UAB).
//
// This work is licensed under the terms of the MIT license.
// For a copy, see <https://opensource.org/licenses/MIT>.
 
#pragma once
 
#include "GameFramework/Actor.h"
 
#include "ActorWithRandomEngine.generated.h"
 
class URandomEngine;
 
/// Base class for actors containing a random engine with a fixed seed.
UCLASS(Abstract)
class CARLA_API AActorWithRandomEngine : public AActor
{
  GENERATED_BODY()
 
public:
 
  AActorWithRandomEngine(const FObjectInitializer& ObjectInitializer);
 
protected:
 
  virtual void OnConstruction(const FTransform &Transform) override;
 
#if WITH_EDITOR
  virtual void PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent) override;
#endif // WITH_EDITOR
 
public:
 
  UFUNCTION(BlueprintCallable)
  URandomEngine *GetRandomEngine()
  {
    return RandomEngine;
  }
 
  UFUNCTION(BlueprintCallable)
  int32 GetSeed() const
  {
    return Seed;
  }
 
  UFUNCTION(BlueprintCallable)
  void SetSeed(int32 InSeed);
 
private:
 
  /** Set a random seed. */
  UPROPERTY(Category = "Random Engine", EditAnywhere)
  bool bGenerateRandomSeed = false;
 
  /** Seed of the pseudo-random engine. */
  UPROPERTY(Category = "Random Engine", EditAnywhere)
  int32 Seed = 123456789;
 
  UPROPERTY()
  URandomEngine *RandomEngine;
};