130 lines
3.4 KiB
Lua
130 lines
3.4 KiB
Lua
-- Storage disks
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holostorage.disks = {}
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holostorage.disks.memcache = {}
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local function inv_to_table(inv)
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local t = {}
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for listname, list in pairs(inv:get_lists()) do
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local size = inv:get_size(listname)
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if size then
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t[listname] = {}
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for i = 1, size, 1 do
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t[listname][i] = inv:get_stack(listname, i):to_table()
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end
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end
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end
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return t
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end
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local function table_to_inv(inv, t)
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for listname, list in pairs(t) do
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for i, stack in pairs(list) do
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inv:set_stack(listname, i, stack)
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end
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end
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end
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function holostorage.disks.register_disk(index, desc, capacity)
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local mod = minetest.get_current_modname()
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minetest.register_craftitem(mod..":storage_disk"..index, {
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description = desc.."\nStores "..capacity.." Stacks",
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inventory_image = "holostorage_disk"..index..".png",
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groups = {holostorage_disk = 1},
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holostorage_capacity = capacity,
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holostorage_name = "disk"..index,
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stack_max = 1,
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on_secondary_use = function (itemstack, user, pointed_thing)
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return stack
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end
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})
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end
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local function create_invref(ptr, capacity)
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local inv = minetest.create_detached_inventory(ptr, {})
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inv:set_size("main", capacity)
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return inv
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end
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function holostorage.disks.ensure_disk_inventory(stack, pstr)
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local meta = stack:get_meta()
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local tag = meta:get_string("storage_tag")
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local cap = minetest.registered_items[stack:get_name()].holostorage_capacity
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if not tag or tag == "" then
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local rnd = PseudoRandom(os.clock())
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local rndint = rnd.next(rnd)
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local diskid = "d"..pstr.."-"..rndint
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meta:set_string("storage_tag", diskid)
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holostorage.disks.memcache[diskid] = create_invref(diskid, cap)
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end
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return stack
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end
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function holostorage.disks.load_disk_from_file(stack, diskptr)
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local world = minetest.get_worldpath()
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local directory = world.."/holostorage"
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local cap = minetest.registered_items[stack:get_name()].holostorage_capacity
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local inv = create_invref(diskptr, cap)
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minetest.mkdir(directory)
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local filetag = minetest.sha1(diskptr)..".invref"
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local file = io.open(directory.."/"..filetag)
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if not file then
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holostorage.disks.memcache[diskptr] = inv
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return diskptr
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end
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local str = ""
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for line in file:lines() do
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str = str..line
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end
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file:close()
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table_to_inv(inv, minetest.deserialize(str))
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holostorage.disks.memcache[diskptr] = inv
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return diskptr
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end
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function holostorage.disks.save_disk_to_file(diskptr)
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if not holostorage.disks.memcache[diskptr] then return nil end
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local world = minetest.get_worldpath()
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local directory = world.."/holostorage"
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local filetag = minetest.sha1(diskptr)..".invref"
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minetest.mkdir(directory)
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local inv = holostorage.disks.memcache[diskptr]
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local data = minetest.serialize(inv_to_table(inv))
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minetest.safe_file_write(directory.."/"..filetag, data)
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return diskptr
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end
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function holostorage.disks.save_disks_to_file()
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for diskptr in pairs(holostorage.disks.memcache) do
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holostorage.disks.save_disk_to_file(diskptr)
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end
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end
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-- Make sure stack is disk
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function holostorage.disks.is_valid_disk(stack)
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local stack_name = stack:get_name()
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return minetest.get_item_group(stack_name, "holostorage_disk") > 0
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end
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-- Save disks on shutdown
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minetest.register_on_shutdown(function ()
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holostorage.disks.save_disks_to_file()
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end)
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local capacities = {1000, 8000, 16000, 32000, 64000}
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local descriptions = {"1K Disk", "8K Disk", "16K Disk", "32K Disk", "64K Disk"}
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for i = 1, 5 do
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holostorage.disks.register_disk(i, descriptions[i], capacities[i])
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end
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