there is no source code to start with unless you have the source code.
else if u know how the strategy works then it can be coded either yourself or programmers in the market place.
This is EA from MT4 Codebase.This one A highly profitable Ea (with source code).I am not a coder but from what I see inside the code:
So, it means - this EA was created on open bar.May be I am wrong as I am not a coder.That is why this Ea is having so good backtesting results here https://www.mql5.com/en/code/9824By the way, his backtesting results is not valid too :) - modelling quality 42.76% (and as I understand - it is not M1 timeframe where 25% may be maximum).
So, my opinion - forget about.