Univerxel/src/contouring/FlatSurroundingBox.hpp

#pragma once

#include "AbstractFlat.hpp"
#include "surrounding.hpp"

#include "../data/safe_queue.hpp"
#include "../data/safe_priority_queue.hpp"
#include "../data/circular_buffer.hpp"
#include "../render/buffer/ShortIndexedBuffer.hpp"
#include <thread>

#define REPORT_BUFFER_SIZE 128

namespace contouring {
    class FlatSurroundingBox: public AbstractFlat {
    public:
        FlatSurroundingBox(const std::string&);
        virtual ~FlatSurroundingBox();

        void update(const camera_pos&) override;

        void onGui() override;

        /// Chunk data change
        void onUpdate(const chunk_pos &, const robin_hood::unordered_map<chunk_pos, std::shared_ptr<Chunk>> &, Faces) override;
        /// Chunk existante ping
        /// @note notify for chunks entering view while moving
        void onNotify(const chunk_pos &, const robin_hood::unordered_map<chunk_pos, std::shared_ptr<Chunk>> &) override;

    protected:
        safe_priority_queue_map<chunk_pos, surrounding::chunks, int> loadQueue;
        safe_queue<std::pair<chunk_pos, ShortIndexedBuffer::Data>> loadedQueue;

        struct report {
            circular_buffer<float> count = circular_buffer<float>(REPORT_BUFFER_SIZE, 0); // MAYBE: store int
            circular_buffer<float> load = circular_buffer<float>(REPORT_BUFFER_SIZE, 0);
            circular_buffer<float> loaded = circular_buffer<float>(REPORT_BUFFER_SIZE, 0);
        } reports;

        bool running = true;
        std::vector<std::thread> workers;

        void enqueue(const chunk_pos &, const robin_hood::unordered_map<chunk_pos, std::shared_ptr<Chunk>> &);

    private:
        static inline bool isTransparent(const surrounding::chunks &surrounding, const std::pair<ushort, ushort> &idx);
        static void render(const surrounding::chunks &surrounding, std::vector<VertexData> &vertices);
    };
}