#ifndef TC_WORLD_H
#define TC_WORLD_H

#include <stdbool.h>
#include <stdint.h>

#include "blocks.h"
#include "utility.h"

typedef struct  tc_worldgen             tc_worldgen_s;
typedef struct  tc_block                tc_block_s;
typedef struct  tc_chunk                tc_chunk_s;
typedef struct  tc_world                tc_world_s;

struct tc_worldgen
{
    char               *name;
    bool              (*fn_generate_chunk)              (tc_worldgen_s *gen, tc_chunk_s *chunk);
    
};

struct tc_block
{
    uint32_t            type_identifier;
    tc_vec3_s           position;
    tc_vec3_s           rotation;
    tc_object_s         drawing;
    
};

struct tc_chunk
{
    tc_vec3_s                   position;
    uint32_t                    blocks[32][32][32];
    
    uint32_t                    num_vertices;
    float                      *vertex_positions;
    float                      *vertex_uvs;
    
    uint32_t                    vao;
    uint32_t                    vertex_data;
    
};

struct tc_world
{
    uint32_t                    chunks_capacity;
    uint32_t                    num_chunks;
    tc_chunk_s                **chunks;
    
    tc_worldgen_s              *worldgen;
    
};

tc_world_s          tc_init_worlds          ();
void                tc_draw_world           (tc_world_s *world);

tc_chunk_s *        tc_new_chunk            (tc_world_s *world, float x, float y, float z);

void tc_set_block_in_chunk(
    tc_chunk_s *chunk,
    uint32_t x, uint32_t y, uint32_t z,
    tc_block_s block
);

uint32_t            tc_count_chunk_vertices                 (tc_chunk_s *chunk);
void                tc_meshize_chunk                        (tc_chunk_s *chunk);

bool                tc_generate_default_terrain_chunk       (tc_worldgen_s *gen, tc_chunk_s *chunk);

#endif