#ifndef TC_BLOCK_H
#define TC_BLOCK_H

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

#include <glad/glad.h>

#define TC_BLOCK_OPAQUE_BIT (1 << 31)

typedef struct tc_cube_side_mesh
{
    uint32_t                    num_vertices;
    
    float                      *allocation;
    
    float                      *uv;
    float                      *xyz;
    
} tc_cube_side_mesh_s;

typedef struct tc_block_attribute
{
    char                       *name;
    
    union {
        void                       *pointer;
        char                       *string;
        int64_t                     integer;
    } value;
    
} tc_block_attribute_s;

typedef struct tc_block_entry
{
    char                       *name;
    uint32_t                    identifier;
    
    uint32_t                    attributes_capacity;
    uint32_t                    num_attributes;
    tc_block_attribute_s       *attributes;
    
} tc_block_entry_s;

typedef struct tc_block_registry
{
    uint32_t                    blocks_capacity;
    uint32_t                    num_blocks;
    tc_block_entry_s           **blocks;
    
} tc_block_registry_s;



tc_block_entry_s *          tc_new_block_entry              (char *name);
void                        tc_add_attribute_to_block_entry
    (tc_block_entry_s *entry, tc_block_attribute_s attribute);
tc_block_attribute_s *      tc_block_resolve_name_to_attribute      (tc_block_entry_s *block, char *name);

tc_block_entry_s *          tc_get_block                    (char *name);
tc_block_entry_s *          tc_resolve_id_to_block_entry    (uint32_t id);

tc_block_registry_s         tc_init_blocks                  ();



typedef struct tc_cube_info
{
    char                       *name;
    
    uint32_t                    identifier;
    
    uint32_t                    texture_top;
    uint32_t                    texture_bottom;
    uint32_t                    texture_east;
    uint32_t                    texture_west;
    uint32_t                    texture_back;
    uint32_t                    texture_front;
    
} tc_cube_info_s;

tc_cube_info_s              tc_gen_unitexture_cube_info
    (char *name, uint32_t identifier, uint32_t texture);

tc_block_entry_s *          tc_new_cube_block                       (tc_cube_info_s info);
void                        tc_create_blocks                        ();

// tc_premesh_cube: Creates a cube's mesh in advance so it is faster when generating a chunk.
//  This is already being done by tc_new_cube_block.
void                        tc_premesh_cube                         (tc_block_entry_s *entry);

#endif