GridEmitter2.h

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/*************************************************************************
> File Name: GridEmitter2.h
> Project Name: CubbyFlow
> Author: Chan-Ho Chris Ohk
> Purpose: Abstract base class for 2-D grid-based emitters.
> Created Time: 2017/08/06
> Copyright (c) 2018, Chan-Ho Chris Ohk
*************************************************************************/
#ifndef CUBBYFLOW_GRID_EMITTER2_H
#define CUBBYFLOW_GRID_EMITTER2_H

#include <functional>
#include <memory>

namespace CubbyFlow
{
    class GridEmitter2
    {
    public:
        using OnBeginUpdateCallback = std::function<void(GridEmitter2*, double, double)>;

        GridEmitter2();

        virtual ~GridEmitter2();

        void Update(double currentTimeInSeconds, double timeIntervalInSeconds);

        void SetOnBeginUpdateCallback(const OnBeginUpdateCallback& callback);

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

        void CallOnBeginUpdateCallback(double currentTimeInSeconds, double timeIntervalInSeconds);

    private:
        OnBeginUpdateCallback m_onBeginUpdateCallback;
    };

    using GridEmitter2Ptr = std::shared_ptr<GridEmitter2>;
}

#endif