mapsync-cd2025/save.lua
2024-01-11 11:10:17 +01:00

98 lines
3.2 KiB
Lua

local global_env = ...
local function save_worker(ctx)
local chunk_pos = ctx.iterator()
if not chunk_pos then
-- done
minetest.chat_send_player(ctx.playername, "Async saving done with " .. ctx.count .. " chunks")
else
-- save pos
local success, err_msg = mapsync.save(chunk_pos)
if not success then
minetest.chat_send_player(
ctx.playername,
"Saving of chunk " .. minetest.pos_to_string(chunk_pos) .. "failed with: " .. err_msg
)
else
minetest.chat_send_player(
ctx.playername,
"Saving of chunk " .. minetest.pos_to_string(chunk_pos) .. " done (count: " .. ctx.count .. ")"
)
ctx.count = ctx.count + 1
-- re-schedule
minetest.after(0, save_worker, ctx)
end
end
end
minetest.register_chatcommand("mapsync_save", {
description = "saves the current chunk or a range around the current chunk (cubic)",
params = "[chunk-range]",
privs = { mapsync = true },
func = function(name, param)
local player = minetest.get_player_by_name(name)
if not player then
return
end
local range = tonumber(param) or 0
local ppos = player:get_pos()
local chunk_pos = mapsync.get_chunkpos(ppos)
local chunk_pos1 = vector.subtract(chunk_pos, range)
local chunk_pos2 = vector.add(chunk_pos, range)
if range == 0 then
-- just the one block
local success, err_msg = mapsync.save(chunk_pos)
if success then
return true, "Saved chunk: " .. minetest.pos_to_string(chunk_pos)
else
return true, "Error saving chunk: " ..
minetest.pos_to_string(chunk_pos) .. ", error: " ..
(err_msg and err_msg or "<no message>")
end
end
-- multiple blocks, execute async
minetest.after(0, save_worker, {
playername = name,
count = 0,
iterator = mapsync.pos_iterator(chunk_pos1, chunk_pos2),
})
return true, "dispatched saving to worker with range of " .. range .. " chunks around the current center"
end
})
function mapsync.save(chunk_pos)
local backend_def = mapsync.select_backend(chunk_pos)
if not backend_def then
return true, "No backend available"
end
if not backend_def.patch_path then
-- direct save
return mapsync.serialize_chunk(chunk_pos, mapsync.get_chunk_zip_path(backend_def.path, chunk_pos))
else
-- create patch file
local baseline_chunk = mapsync.parse_chunk(mapsync.get_chunk_zip_path(backend_def.path, chunk_pos))
local filename = mapsync.get_chunk_json_path(backend_def.patch_path, chunk_pos)
local f = global_env.io.open(filename, "w")
local no_diff = true
mapsync.create_diff(baseline_chunk, chunk_pos, function(changed_node)
no_diff = false
f:write(minetest.write_json(changed_node) .. '\n')
end)
f:close()
if no_diff then
-- remove empty diff file
global_env.os.remove(filename)
end
return true
end
end