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-- smarter mesecons actionqueue
-- TODO: create PR if ot works properly
-- execute the stored functions on a globalstep
-- if however, the pos of a function is not loaded (get_node_or_nil == nil), do NOT execute the function
-- this makes sure that resuming mesecons circuits when restarting minetest works fine
-- However, even that does not work in some cases, that's why we delay the time the globalsteps
-- start to be execute by 5 seconds
local get_highest_priority = function (actions)
local highestp = -1
local highesti
for i, ac in ipairs(actions) do
if ac.priority > highestp then
highestp = ac.priority
highesti = i
end
end
return highesti
end
local m_time = 0
local resumetime = mesecon.setting("resumetime", 4)
minetest.register_globalstep(function (dtime)
m_time = m_time + dtime
-- don't even try if server has not been running for XY seconds; resumetime = time to wait
-- after starting the server before processing the ActionQueue, don't set this too low
if (m_time < resumetime) then return end
if not mesecons_debug.enabled then
return
end
local actions = mesecon.tablecopy(mesecon.queue.actions)
local actions_now={}
mesecon.queue.actions = {}
-- sort actions into two categories:
-- those toexecute now (actions_now) and those to execute later (mesecon.queue.actions)
for _, ac in ipairs(actions) do
if ac.time > 0 then
ac.time = ac.time - dtime -- executed later
table.insert(mesecon.queue.actions, ac)
else
table.insert(actions_now, ac)
end
end
if #actions_now > 30000 then
-- too much actions, purge them
return
end
local t0 = minetest.get_us_time()
while(#actions_now > 0) do -- execute highest priorities first, until all are executed
local hp = get_highest_priority(actions_now)
local action = actions_now[hp]
local t1 = minetest.get_us_time()
local diff = t1 - t0
if diff > 75000 then
-- execute remaining actions in next globalstep
table.insert(mesecon.queue.actions, 1, action)
else
mesecon.queue:execute(action)
table.remove(actions_now, hp)
end
end
end)
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