Pinescript 中的睡眠/暂停 function

Question

I have a question about pine script. I need a sleep/pause function, I need this because I have a tradingbot that has a delay of 1 sec. As in when tradingview sends the webhook notification it takes the bot 1 sec to buy on my broker. Because of this the results tradingview gives me from the past year are not accurate, and I want more accurate results. You can ignore the strategy code, that's pure to make it more specific what I want.

//@version=4
strategy("xx")
emaLong = ema(close, 50)
emaShort = ema(close, 20)

longCondition = crossover()
shortCondition = crossover()

if longCondition
     sleep/pause of 1 sec <<<<<<<<<<<<<<<<<< That's where I want a short pause.
     strategy.entry()

if shortCondition
     sleep/pause of 1 sec <<<<<<<<<<<<<<<<<< That's where I want a short pause.
     strategy.entry()

Answer 1

I don't think this can be done, because Pine processes bar per bar, and maximum execution time per bar is limited to 200ms (judging from a max loop time error I got).

The code below is an attempt at waiting 1 second, but can't get it working due to the mentioned 200ms error, but I'll leave it here for you to fiddle with it.

//@version=4
study("xx", overlay=true)

var int[] arr = array.new_int(na)
var int t = na

if barstate.islast and barstate.isconfirmed
    t := timenow
    array.push(arr, t)
    for i = 0 to 5000000
        if timenow - t >= 1000 // 1000ms = 1 second
            array.push(arr, t)
            break // get out of loop

    label.new(bar_index, high, "#elements=" + tostring(array.size(arr)))

plot(na)          

Answer 2

//@version=4
strategy("xx")
emaLong = ema(close, 50)
emaShort = ema(close, 20)

longCondition = crossover()
shortCondition = crossover()

var wait_time := 0
if wait_time>0
     wait_time = wait_time - 1

if longCondition
     wait_time = 0
     strategy.entry()

if shortCondition
     wait_time = 24
     strategy.entry()

I am thinking somethign like this. Of course, this doesn't work. But it could be something that someone may further edit.

Answer 3

Try this code:

//@Version=5

// Define the number of bars to wait:

barsToWait = 10

// Declare a variable to keep track of the last traded bar:

lastTradeBar = 0

// Get the current bar index:

currentBar = bar_index

// Check if the number of bars passed is greater than the number of bars to wait:

if currentBar > lastTradeBar + barsToWait
    // If it is, then open a trade
    strategy.entry("My Long Entry", strategy.long)
    lastTradeBar := currentBar

You can also create the barstoWait as an input, then you can quickly change it on the fly while testing strategies. I am using it like this and it works.

Like this:

barsToWait = input.int(2,"Bars to Wait for Trades",1,20,1)