-- lua/plugins/repeatUtil.lua

-- author expwnent

-- tools for registering callbacks periodically

-- vaguely based on a script by Putnam

local _ENV = mkmodule("repeat-util")

repeating = repeating or {}

dfhack.onStateChange.repeatUtilStateChange = function(code)

if code == SC_WORLD_UNLOADED then

repeating = {}

end

end

function cancel(name)

if not repeating[name] then

return false

end

if repeating[name] ~= -1 then

dfhack.timeout_active(repeating[name],nil)

end

repeating[name] = nil

return true

end

function scheduleEvery(name,time,timeUnits,func)

cancel(name)

local function helper()

func()

if repeating[name] then

repeating[name] = dfhack.timeout(time,timeUnits,helper)

end

end

repeating[name] = -1

helper()

end

function scheduleUnlessAlreadyScheduled(name,time,timeUnits,func)

if repeating[name] then

return

end

scheduleEvery(name,time,timeUnits,func)

end

return _ENV