NullBite
6b985f6574
It takes two functions; one is to check the state and the other is a callback to execute if the first function evaluates true. It can automatically handling deregistering functions once they are no longer needed
44 lines
1.1 KiB
Lua
44 lines
1.1 KiB
Lua
local statemonitor={}
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local callbacks={}
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local function ternary(val, t, f)
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if val then return t else return f end
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end
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--- Deregister a callback
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---@param name string Name of callback
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function statemonitor.deregister(name)
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callbacks[name] = nil
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end
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--- Register a callback to a function
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--Registers a callback to run when a check funciton evaluates to true
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---@param name string Name of callback
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---@param check function Function to evaluate
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---@param callback function Callback to run when true
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---@param frequency? integer Frequency to run the check, in ticks (default 5)
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---@param once? boolean Whether the callback should be deregistered after running once, default true
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function statemonitor.register(name, check, callback, frequency, once)
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frequency=frequency or 5
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once=ternary(once ~= nil, once, true)
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callbacks[name] = {check=check, callback=callback, f=frequency,
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deregister=once}
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end
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local function tick()
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for k, v in pairs(callbacks) do
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if world.getTimeOfDay() % v.f and v.check() then
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v.callback()
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if v.deregister then
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statemonitor.deregister(k)
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end
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end
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end
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end
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events.TICK:register(tick, "nulllib.statemonitor")
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return statemonitor
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