// credit to Benoit //

#ifndef GRID_H
#define GRID_H
#include <stdbool.h>

typedef enum special {ROT_CC, ROT_CW} special ;

typedef struct linkedList {
    uint8_t coord ;         // coord%8 = x ; coord/16 = y
    char* flag ;
    struct linkedList* next ;
} linkedList ;

typedef struct template {
    uint8_t id ;
    uint8_t* lines ;         // len = 8

    bool checkCompat ;

    uint8_t eastsig ;
    uint8_t westsig ;

    linkedList* meta ;
} template ;

typedef struct chunk {
    int16_t chx ;
    int16_t chy ;

    int draw_id ;

    template chdata ;
} chunk ;

// 

typedef struct List {
    int hash;
    int x;
    int y;
    chunk* elt;
    struct List* next;
} *List;

typedef struct Grid {
    List* data;
    int capacity;
    int size;
    double loadFactor;
    void (*push)(struct Grid *grid, int x, int z, chunk* elt);
    chunk* (*pop)(struct Grid *grid, int x, int z);
    chunk* (*get)(struct Grid *grid, int x, int z);
    bool (*mem)(struct Grid *grid, int x, int z);
} *Grid;

int generate_hash(int x, int y);

Grid newGrid();
void freeGrid(Grid grid); 

void gridInsert(Grid grid, int x, int z, chunk* elt);
chunk* gridGet(Grid grid, int x, int z);
bool gridMem(Grid grid, int x, int z);
chunk* gridRemove(Grid grid, int x, int z);

chunk** gridIter(Grid grid);

typedef struct ChunkCoord {
    int x;
    int z;
} *ChunkCoord;

ChunkCoord newChunkCoord(int x, int z);
void freeChunkCoord(ChunkCoord coord);

#endif