minecraft.h

/*
minecraft.h

Extension module header file
*/

#ifndef PARAMETERS
#define PARAMETERS

// Buffer sizes
#define SMALL_DEFLATE_MAX   10000;
#define SMALL_INFLATE_MAX   20000;
#define CHUNK_DEFLATE_MAX   1000000;
#define CHUNK_INFLATE_MAX   1000000;

#define MAX_CHUNKS              101
#define MAX_REGIONS             8
#define NEW_REGION_BUFFER_SIZE  2000000
#define REGION_BUFFER_PADDING   10000

#endif

// structs
typedef struct TagType{
    char *name;
    int id;
    bool empty_byte_list;
    unsigned char sub_tag_id; // Optional, for List tag
} TagType;

typedef struct {
    PyObject_HEAD
    unsigned short id;
    unsigned char data, blocklight, skylight;
} Block;

typedef struct {
    PyObject_HEAD
    PyObject *world, *dict;
    int x, z;
} Chunk;

typedef struct {
    unsigned char *buffer;
    int x, z, buffer_size, current_size;
    struct Region *next; // Meant to function as a linked list, as part of the World
} Region;

typedef struct {
    PyObject_HEAD
    PyObject *level; // level.dat dictionary
    char *path;      // path to the world
    Region *regions;

    // Chunk holding code, probably will be moved
    PyObject **chunks;
} World;

// block.c
PyTypeObject minecraft_BlockType;
int Block_init( Block *self, PyObject *args, PyObject *kwds );

// chunk.c
PyTypeObject minecraft_ChunkType;
int Chunk_init( Chunk *self, PyObject *args, PyObject *kwds );
PyObject *Chunk_get_block( Chunk *self, PyObject *args );
PyObject *Chunk_put_block( Chunk *self, PyObject *args );

// generator.c
PyTypeObject minecraft_GeneratorType;

// nbt.c
long swap_endianness( unsigned char *buffer, int bytes );
void swap_endianness_in_memory( unsigned char *buffer, int bytes );
void dump_buffer( unsigned char *buffer, int count );
int inf( unsigned char *dst, unsigned char *src, int bytes, int mode );
int def( unsigned char *dst, unsigned char *src, int bytes, int mode, int *size );
PyObject *get_tag( unsigned char *tag, char tag_id, int *moved );
int write_tags( unsigned char *dst, PyObject *dict, TagType tags[] );

// region.c
int update_region( Region *region, Chunk *chunk );
int save_region( Region *region, char *path );
int unload_region( Region *region, char *path );
void print_region_info( Region *region );

// world.c
PyTypeObject minecraft_WorldType;
Region *load_region( World *self, int x, int z );