#ifndef CHUNK_H__
#define CHUNK_H__
#include "define.h"
#include "array3d.h"
#include "array2d.h"
#include "vertexbuffer.h"
#include "blockinfo.h"
#include "perlin.h"
#include "opensimplex.h"

class World;

class Chunk {
    private:
        Array3d<BlockType> m_blocks = Array3d<BlockType>(CHUNK_SIZE_X, CHUNK_SIZE_Y, CHUNK_SIZE_Z);
        VertexBuffer m_vertexBuffer;
        bool m_isDirty = true;
        bool m_isModified = false;

        unsigned int m_posX; // Position du chunk dans l'array constituant le monde.
        unsigned int m_posY;

        VertexBuffer::VertexData* m_vd;
        int m_vcount;

        void AddBlockToMesh(VertexBuffer::VertexData* vd, int& count, BlockType bt, int x, int y, int z, float u, float v, float s, World* world);

    public:
        Chunk(unsigned int x, unsigned int y);
        ~Chunk();

        void RemoveBlock(int x, int y, int z, World* world);
        void SetBlock(int x, int y, int z, BlockType type, World* world);
        BlockType GetBlock(int x, int y, int z);
        void CheckNeighbors(unsigned int x, unsigned int z, World* world);
        void GetPosition(unsigned int& x, unsigned int& y) const;


        void Update(BlockInfo* blockinfo[BTYPE_LAST], World* world);
        void FlushMeshToVBO();

        void FlushVBO();
        
        void Render() const;
        bool IsDirty() const;
        void MakeDirty();
        void MakeModified();
};

#endif // CHUNK_H__