45 lines
1.0 KiB
Lua
45 lines
1.0 KiB
Lua
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---Yields the current thread until a non-nil value is returned by the function.
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---@generic T
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---@param cb fun(): T?
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---@param errMessage string?
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---@param timeout number? Error out after `~x` ms. Defaults to 1000, unless set to `false`.
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---@return T?
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---@async
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function lib.waitFor(cb, errMessage, timeout)
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local value = cb()
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if value ~= nil then return value end
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if timeout or timeout == nil then
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if type(timeout) ~= 'number' then timeout = 1000 end
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if IsDuplicityVersion() then
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timeout /= 50;
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else
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timeout -= GetFrameTime() * 1000;
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end
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end
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local start = GetGameTimer()
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local i = 0
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while value == nil do
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if timeout then
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i += 1
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if i > timeout then
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return error(('%s (waited %.1fms)'):format(errMessage or 'failed to resolve callback', (GetGameTimer() - start) / 1000), 2)
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end
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end
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Wait(0)
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value = cb()
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end
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return value
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end
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return lib.waitFor
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