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Save forceloaded blocks file periodically (#8535)

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saves the forceloaded blocks periodically.
checks every 10 seconds if the forceloaded blocks got changed in-game
and persists them on-disk if that's the case
This commit is contained in:
Thomas Rudin 2019-06-10 02:07:33 +02:00 committed by rubenwardy
parent a687efa6df
commit 9a07792f4d
1 changed files with 33 additions and 2 deletions
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35
builtin/game/forceloading.lua
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@ -8,6 +8,9 @@ local blocks_forceloaded
local blocks_temploaded = {}
local total_forceloaded = 0
-- true, if the forceloaded blocks got changed (flag for persistence on-disk)
local forceload_blocks_changed = false
local BLOCKSIZE = core.MAP_BLOCKSIZE
local function get_blockpos(pos)
return {
@ -31,6 +34,9 @@ local function get_relevant_tables(transient)
end
function core.forceload_block(pos, transient)
-- set changed flag
forceload_blocks_changed = true
local blockpos = get_blockpos(pos)
local hash = core.hash_node_position(blockpos)
local relevant_table, other_table = get_relevant_tables(transient)
@ -51,6 +57,9 @@ function core.forceload_block(pos, transient)
end
function core.forceload_free_block(pos, transient)
-- set changed flag
forceload_blocks_changed = true
local blockpos = get_blockpos(pos)
local hash = core.hash_node_position(blockpos)
local relevant_table, other_table = get_relevant_tables(transient)
@ -95,6 +104,28 @@ core.after(5, function()
end
end)
core.register_on_shutdown(function()
-- persists the currently forceloaded blocks to disk
local function persist_forceloaded_blocks()
write_file(wpath.."/force_loaded.txt", blocks_forceloaded)
end)
end
-- periodical forceload persistence
local function periodically_persist_forceloaded_blocks()
-- only persist if the blocks actually changed
if forceload_blocks_changed then
persist_forceloaded_blocks()
-- reset changed flag
forceload_blocks_changed = false
end
-- recheck after some time
core.after(10, periodically_persist_forceloaded_blocks)
end
-- persist periodically
core.after(5, periodically_persist_forceloaded_blocks)
-- persist on shutdown
core.register_on_shutdown(persist_forceloaded_blocks)