Weather.h

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// Copyright (c) 2023 FrostBit Software Lab at the Lapland University of Applied Sciences
//
// This work is licensed under the terms of the MIT license.
// For a copy, see <https://opensource.org/licenses/MIT>.
 
#pragma once
 
#include "CoreMinimal.h"
#include "GameFramework/Actor.h"
#include "Engine/World.h"
 
#include "WeatherParameters.h"
#include "Season.h"
 
#include "ROSIntegration/Public/std_msgs/String.h"
 
#include "Weather.generated.h"
 
class UROSIntegrationGameInstance;
class UTopic;
 
DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FLevelEventDelegate_WeatherChanged, FWeatherParameters, weatherParameters);
 
/*
* This Actor class handles changing simulation Weather.
* When Weather is changed, either through user interface or ROS (.json),
* an event is dispatched and Weather values are changed in BP_Weather blueprint.
*/
UCLASS(Abstract)
class AGRARSENSE_API AWeather : public AActor
{
    GENERATED_BODY()
 
public:
 
    AWeather(const FObjectInitializer& ObjectInitializer);
 
    UFUNCTION(BlueprintCallable)
    void UpdateWeather(const FWeatherParameters& WeatherParameters, bool updateToROS);
 
    /*
    * Export current Weather to JSON file.
    */
    UFUNCTION(BlueprintCallable)
    FString ExportToJSON(const FString& FileName);
 
    UFUNCTION(BlueprintCallable)
    void ResetWeather();
 
    UFUNCTION(BlueprintCallable, BlueprintPure)
    ESeason GetCurrentSeason();
 
    UFUNCTION(BlueprintCallable, BlueprintPure)
    ESeason GetSeasonForMonth(const int32 Month);
 
    UFUNCTION(BlueprintCallable)
    const FWeatherParameters& GetCurrentWeather() const
    {
        return CurrentWeather;
    }
 
    UFUNCTION(BlueprintCallable)
    const bool IsValidLeafColor(const FLinearColor& Color) const
    {
        return Color != FLinearColor(0.0f, 0.0f, 0.0f, 0.0f);
    }
 
    UPROPERTY(BlueprintAssignable)
    FLevelEventDelegate_WeatherChanged OnWeatherChanged;
 
protected:
 
    virtual void BeginPlay() override;
 
    virtual void EndPlay(const EEndPlayReason::Type EndPlayReason) override;
 
private:
 
    UFUNCTION()
    void ROSBridgeStateChanged(EROSState ROSState);
 
    void DestroyTopic();
 
    void InitializeROSTopic();
 
    void SendWeatherData(FWeatherParameters Parameters);
 
    FWeatherParameters CurrentWeather;
 
    UPROPERTY()
    UTopic* WeatherTopic = nullptr;
 
    UPROPERTY()
    UROSIntegrationGameInstance* RosInstance = nullptr;
 
    bool ROSConnected = false;
 
    UPROPERTY()
    TArray<FWeatherParameters> WeatherPresets;
 
    TSharedPtr<ROSMessages::std_msgs::String> Message;
 
    const FWeatherParameters Default = { 0.0f, 0.0f, 0.1f, 0.05f, 0.0f, 0.2f, 0.0f, 15.0f, 0.0f, 0.0f, 7, 9 };
};