linux-wallpaperengine-kde/src/WallpaperEngine/Core/Objects/Particles/CEmitter.h

#pragma once

#include "WallpaperEngine/Core/Core.h"

namespace WallpaperEngine::Core::Objects::Particles
{
    using json = nlohmann::json;

    /**
     * Particle emitter, controls the area where the particles have to be created
     */
    class CEmitter
    {
    public:
        static CEmitter* fromJSON (json data);

        /**
         * @return The ID of the emitter
         */
        [[nodiscard]] uint32_t getId () const;
        /**
         * @return The name of the emitter, indicates what type of emission to do
         */
        [[nodiscard]] const std::string& getName () const;
        /**
         * @return The maximum distance a particle can travel before being dead
         */
        [[nodiscard]] const uint32_t getDistanceMax () const;
        /**
         * @return The minimum distance a particle can travel before being dead
         */
        [[nodiscard]] const uint32_t getDistanceMin () const;
        /**
         * @return The direction a particle should move to
         */
        [[nodiscard]] const glm::vec3& getDirections () const;
        /**
         * @return The center of the particle emission
         */
        [[nodiscard]] const glm::vec3& getOrigin () const;
        /**
         * @return The rate of particle emission
         */
        [[nodiscard]] const double getRate () const;

    protected:
        CEmitter (
            const glm::vec3& directions, uint32_t distancemax, uint32_t distancemin, uint32_t id, std::string name,
            const glm::vec3& origin, double rate
        );

    private:
        /** Direction the particles should move to */
        glm::vec3 m_directions;
        /** Maximum distance before the particle is dead */
        uint32_t m_distancemax;
        /** Minimum distance before the particle is dead */
        uint32_t m_distancemin;
        /** ID of the emitter */
        uint32_t m_id;
        /** Name of the emitter, indicates the type of emitter */
        std::string m_name;
        /** The center of the emitter */
        glm::vec3 m_origin;
        /** The rate of emission */
        double m_rate;
    };
}