sequential conditions to define a strategy

[Danilod]

I am just starting as a programmer using C# in Ninja Script and was wondering, what is the best way for creating a sequence of conditions that must be verified to.... eg: automatically close an open long order. The logic could be something like this:

In order to close a long order I want that:
1) First and foremost a long order must be open
2) RSI Crossed above 70
3) RSI Crossed below 70
4) RSI Crossed above 70.

For 2) to happen, 1) must have happened first;
for 3) to happen, 2) must have happened before;
for 4) to happen, 3) must have happened before;

Only when the 4 conditions happen the action of closing the order is triggered.

I've tried to create a logic using bool variables for each step that I activate / deactivate but it doesn't seem to work like I was expecting.
Is there any more elegant way of doing this?

SideNote: This is a simplified silly example and not an actually strategy that I tested; All i want is understand the logic of how would be an elegant and effective way of programming it.

Thanks in advance for all your help,

[NinjaTrader_ChrisL]

Hi Danilod, thanks for posting.

You will use boolean variables to do this. The process would be: Calculate, OnBarClose: Check the first condition, if true, set first boolean to true then return; from OnBarUpdate. The code structure would be:

bool flag1, flag2 = false;

protected override void OnBarUpdate()
{
if(!flag1 && Some Condition1)
{
flag1 = true;
return;
}
if(!flag2 && flag1 && Some Condition2)
{
flag2 = true;
//do something here, or retrun and continue the process further. 
}
}

If the script is running OnEachTick or OnPriceChange, some additional logic would be needed to track the CurrentBar property to make the conditions wait 1 bar after checking the condition.

Kind regards,
-ChrisL

[Danilod]

Thanks for your help. And one more question. I read about how

State.SetDefaults
IsInstantiatedOnEachOptimizationIteration = false;

could speed up optimization process. Do you think this could have any implication on the result of the code like the one you proposed. I am wondering if the bool variables will be reseted on each iteration.

Thanks.

[NinjaTrader_ChrisL]

Hi Danilod, thanks for your reply.

You would need to make sure the booleans are reset back to their original value within State.SetDefault or State.Configure.

Kind regards,
-ChrisL