ParticleEmitter2.hpp

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// This code is based on Jet framework.
// Copyright (c) 2018 Doyub Kim
// CubbyFlow is voxel-based fluid simulation engine for computer games.
// Copyright (c) 2020 CubbyFlow Team
// Core Part: Chris Ohk, Junwoo Hwang, Jihong Sin, Seungwoo Yoo
// AI Part: Dongheon Cho, Minseo Kim
// We are making my contributions/submissions to this project solely in our
// personal capacity and are not conveying any rights to any intellectual
// property of any third parties.

#ifndef CUBBYFLOW_PARTICLE_EMITTER2_HPP
#define CUBBYFLOW_PARTICLE_EMITTER2_HPP

#include <Core/Particle/ParticleSystemData.hpp>

namespace CubbyFlow
{
class ParticleEmitter2
{
 public:
    using OnBeginUpdateCallback =
        std::function<void(ParticleEmitter2*, double, double)>;

    ParticleEmitter2() = default;

    ParticleEmitter2(const ParticleEmitter2&) = default;

    ParticleEmitter2(ParticleEmitter2&&) noexcept = default;

    virtual ~ParticleEmitter2() = default;

    ParticleEmitter2& operator=(const ParticleEmitter2&) = default;

    ParticleEmitter2& operator=(ParticleEmitter2&&) noexcept = default;

    void Update(double currentTimeInSeconds, double timeIntervalInSeconds);

    [[nodiscard]] const ParticleSystemData2Ptr& GetTarget() const;

    void SetTarget(const ParticleSystemData2Ptr& particles);

    [[nodiscard]] bool GetIsEnabled() const;

    void SetIsEnabled(bool enabled);

    void SetOnBeginUpdateCallback(const OnBeginUpdateCallback& callback);

 protected:
    virtual void OnSetTarget(const ParticleSystemData2Ptr& particles);

    virtual void OnUpdate(double currentTimeInSeconds,
                          double timeIntervalInSeconds) = 0;

 private:
    ParticleSystemData2Ptr m_particles;
    OnBeginUpdateCallback m_onBeginUpdateCallback;
    bool m_isEnabled = true;
};

using ParticleEmitter2Ptr = std::shared_ptr<ParticleEmitter2>;
}  // namespace CubbyFlow

#endif