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 # File i\_activity.h

 Last update: 22.04.2026 

![](https://img.shields.io/badge/language-C%2B%2B-blue "C++")

**Location**: `core/lifecycle/activity/i_activity.h`

## Classes

- [simulation\_framework::core::lifecycle::IActivity](classsimulation__framework_1_1core_1_1lifecycle_1_1IActivity.md#classsimulation__framework_1_1core_1_1lifecycle_1_1IActivity)

## Namespaces

- [simulation\_framework](namespacesimulation__framework.md#namespacesimulation__framework)
- [simulation\_framework::core](namespacesimulation__framework_1_1core.md#namespacesimulation__framework_1_1core)
- [simulation\_framework::core::lifecycle](namespacesimulation__framework_1_1core_1_1lifecycle.md#namespacesimulation__framework_1_1core_1_1lifecycle)

## Includes

- core/export/simfwk\_core\_export.h
- core/scheduler/event/simulation\_settings.h
- [core/service/parameter/simulation\_parameters.h](simulation__parameters_8h.md#simulation__parameters_8h)
- [core/time/i\_clock/timestamp.h](timestamp_8h.md#timestamp_8h)
- 
- 

## Included by

- [base\_activity.h](base__activity_8h.md#base__activity_8h)
- [i\_activity\_factory.h](i__activity__factory_8h.md#i__activity__factory_8h)
- [i\_scheduler\_client.h](i__scheduler__client_8h.md#i__scheduler__client_8h)
- [i\_standalone\_activity\_creator.h](i__standalone__activity__creator_8h.md#i__standalone__activity__creator_8h)

## Source

```cpp


#ifndef SIMFWK_CORE_LIFECYCLE_ACTIVITY_IACTIVITY_H
#define SIMFWK_CORE_LIFECYCLE_ACTIVITY_IACTIVITY_H

#include "core/export/simfwk_core_export.h"
#include "core/scheduler/event/simulation_settings.h"
#include "core/service/parameter/simulation_parameters.h"
#include "core/time/i_clock/timestamp.h"
#include <chrono>
#include <string>

namespace simulation_framework
{
namespace core
{
namespace lifecycle
{

class SIMFWK_CORE_API IActivity
{
  public:
    virtual ~IActivity() = default;

    virtual void Init() = 0;

    virtual void WaitForPubSubConnection() = 0;

    virtual void Step() = 0;

    virtual void Finalize() = 0;

    virtual void Shutdown() = 0;

    virtual std::string GetName() const = 0;

    virtual time::Timestamp GetCurrentTimestamp() const = 0;

    virtual std::chrono::milliseconds GetCycleTime() const = 0;

    virtual const SimulationParameters::CustomizedParameters& GetCustomizedParameters() const = 0;

    virtual std::string GetSimulationOutputDirectory() const = 0;

    virtual void SetUpCommunication() = 0;

    virtual void SetSimulationSettings(const scheduling::SimulationSettings& sim_settings) = 0;
};

}  // namespace lifecycle
}  // namespace core
}  // namespace simulation_framework

#endif  // SIMFWK_CORE_LIFECYCLE_ACTIVITY_IACTIVITY_H

```