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Original file line number | Diff line number | Diff line change |
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-- Prevent anyone else accessing those functions | ||
local forceload_block = minetest.forceload_block | ||
local forceload_free_block = minetest.forceload_free_block | ||
minetest.forceload_block = nil | ||
minetest.forceload_free_block = nil | ||
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||
local blocks_forceloaded | ||
local total_forceloaded = 0 | ||
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||
local BLOCKSIZE = 16 | ||
local function get_blockpos(pos) | ||
return { | ||
x = math.floor(pos.x/BLOCKSIZE), | ||
y = math.floor(pos.y/BLOCKSIZE), | ||
z = math.floor(pos.z/BLOCKSIZE)} | ||
end | ||
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||
function minetest.forceload_block(pos) | ||
local blockpos = get_blockpos(pos) | ||
local hash = minetest.hash_node_position(blockpos) | ||
if blocks_forceloaded[hash] ~= nil then | ||
blocks_forceloaded[hash] = blocks_forceloaded[hash] + 1 | ||
return true | ||
else | ||
if total_forceloaded >= (minetest.setting_get("max_forceloaded_blocks") or 16) then | ||
return false | ||
end | ||
total_forceloaded = total_forceloaded+1 | ||
blocks_forceloaded[hash] = 1 | ||
forceload_block(blockpos) | ||
return true | ||
end | ||
end | ||
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||
function minetest.forceload_free_block(pos) | ||
local blockpos = get_blockpos(pos) | ||
local hash = minetest.hash_node_position(blockpos) | ||
if blocks_forceloaded[hash] == nil then return end | ||
if blocks_forceloaded[hash] > 1 then | ||
blocks_forceloaded[hash] = blocks_forceloaded[hash] - 1 | ||
else | ||
total_forceloaded = total_forceloaded-1 | ||
blocks_forceloaded[hash] = nil | ||
forceload_free_block(blockpos) | ||
end | ||
end | ||
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-- Keep the forceloaded areas after restart | ||
local wpath = minetest.get_worldpath() | ||
local function read_file(filename) | ||
local f = io.open(filename, "r") | ||
if f==nil then return {} end | ||
local t = f:read("*all") | ||
f:close() | ||
if t=="" or t==nil then return {} end | ||
return minetest.deserialize(t) | ||
end | ||
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local function write_file(filename, table) | ||
local f = io.open(filename, "w") | ||
f:write(minetest.serialize(table)) | ||
f:close() | ||
end | ||
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blocks_forceloaded = read_file(wpath.."/force_loaded.txt") | ||
for _, __ in pairs(blocks_forceloaded) do | ||
total_forceloaded = total_forceloaded + 1 | ||
end | ||
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minetest.after(5, function() | ||
for hash, _ in pairs(blocks_forceloaded) do | ||
local blockpos = minetest.get_position_from_hash(hash) | ||
forceload_block(blockpos) | ||
end | ||
end) | ||
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minetest.register_on_shutdown(function() | ||
write_file(wpath.."/force_loaded.txt", blocks_forceloaded) | ||
end) |
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