Getting price in relation to a sma that’s moved forward

I have a system that is like to backtest that uses alligator Williams lines. My issue is getting price in relation to the sma line that’s moved forward by 8 bars. I’ve done some googling but couldn’t really find an idea they fits. 

Basically I want to know if price is above or below an sma line that’s been moved forward. Is this possible? I have a custom indicator coded in mt4 but I’m having a hell of a time reworking it. 

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Please correct me if I am wrong, but it seems like at time t you need to access the the SMA at time t-8 (since we need an sma line moved forward by 8 bars).

If this is the case we can calculate the SMA everyday and store the data in a Rolling Window. A rolling window,  is an array of data that allows for reverse list access semantics. In order to access the correct SMA, we can access the 7th index, since the rolling window has 0-based indexing. 

Note: In order to make sure the rolling windows are properly populated, we can warm-up the algorithm. There is also an SMA helper method, so that you will not need to keep calculating the values.


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