local mod_storage = minetest.get_mod_storage();

-- The API object
cartographer = {
    scan_queue = {},
};
_cartographer = {
    CHUNK_SIZE = 16,

    biome_lookup = {},
    marker_count = 0,
    marker_lookup = {},
    maps = minetest.deserialize(mod_storage:get_string("maps")) or {},
    next_map_id = mod_storage:get_int("next_map_id"),

    materials_by_name = {},
    materials_by_group = {},
};

if _cartographer.next_map_id == 0 then
    _cartographer.next_map_id = 1;
end

data = {
    generated = minetest.deserialize(mod_storage:get_string("map")) or {},
}

local function save()
    mod_storage:set_string("maps", minetest.serialize(_cartographer.maps));
    mod_storage:set_int("next_map_id", _cartographer.next_map_id);
    mod_storage:set_string("map", minetest.serialize(data.generated));
end
minetest.register_on_shutdown(save);
minetest.register_on_leaveplayer(save);

local function periodic_save()
    save();
    minetest.after(60, periodic_save);
end
minetest.after(60, periodic_save);

function tochunk(coord)
    return math.floor(coord / _cartographer.CHUNK_SIZE);
end

function fromchunk(coord)
    return math.floor(coord * _cartographer.CHUNK_SIZE);
end

-- The path to this mod, for including files
local modpath = minetest.get_modpath("cartographer");

-- Includes
dofile(modpath .. "/commands.lua");
dofile(modpath .. "/scanner.lua");
dofile(modpath .. "/skin_api.lua");
dofile(modpath .. "/map_api.lua");
dofile(modpath .. "/map_formspec.lua");
dofile(modpath .. "/marker_formspec.lua");
dofile(modpath .. "/items.lua");
dofile(modpath .. "/table.lua");