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Use minetest.hash_node_position for searches.

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Previously, Digilines used concatenations of X/Y/Z coordinates into
strings as keys to check for repeatedly visiting the same node during a
graph search. Replace them with integer keys generated by
`minetest.hash_node_position`, which should be more efficient.
This commit is contained in:
Christopher Head 2017-02-19 15:15:00 -08:00 committed by Auke Kok
parent 25ea72270d
commit 84133a10df
2 changed files with 2 additions and 2 deletions
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2
init.lua
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@ -9,7 +9,7 @@ dofile(modpath .. "/wire_std.lua")
function digiline:receptor_send(pos, rules, channel, msg)
local checked = {}
checked[tostring(pos.x).."_"..tostring(pos.y).."_"..tostring(pos.z)] = true -- exclude itself
checked[minetest.hash_node_position(pos)] = true -- exclude itself
for _,rule in ipairs(rules) do
if digiline:rules_link(pos, digiline:addPosRule(pos, rule)) then
digiline:transmit(digiline:addPosRule(pos, rule), channel, msg, checked)

2
internal.lua
View File

@ -105,7 +105,7 @@ function digiline:transmit(pos, channel, msg, checked)
for _, rule in ipairs(rules) do
local nextPos = digiline:addPosRule(curPos, rule)
if digiline:rules_link(curPos, nextPos) then
local checkedID = tostring(nextPos.x) .. "_" .. tostring(nextPos.y) .. "_" .. tostring(nextPos.z)
local checkedID = minetest.hash_node_position(nextPos)
if not checked[checkedID] then
checked[checkedID] = true
queue_enqueue(queue, nextPos)