2x take profit, move stop loss to entry.pine

Script Name: 2x take profit, move stop loss to entry
Author: fpsd4ve
Description: Two take profit targets moving stop loss to entry after first take profit hit 

This strategy shows a method to achieve the following trade management:

1) Open a position with two take profit targets
2) When first take profit is hit, move the stop loss to entry price
3) Position is closed when either second take profit is hit or position is stopped out at entry

...
PineScript code:

Pine Script™ strategy
2x take profit, move stop loss to entry
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// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © fpsd4ve
//@version=5
// Add Bollinger Bands indicator (close, 20, 2) manually to visualise trading conditions
strategy("2xTP, SL to entry", 
     overlay=false,
     pyramiding=0,
     calc_on_every_tick=false,
     default_qty_type=strategy.percent_of_equity,
     default_qty_value=25,
     initial_capital=1000,
     commission_type=strategy.commission.percent,
     commission_value=0.01
     )
// PARAMETERS
// Assumes quote currency is FIAT as with BTC/USDT pair
tp1=input.float(200, title="Take Profit 1")
tp2=input.float(500, title="Take Profit 2")
sl=input.float(200, title="Stop Loss")
stOBOS = input.bool(true, title="Use Stochastic overbought/oversold threshold")
// Colors
colorRed = #FF2052
colorGreen = #66FF00
// FUNCTIONS
// Stochastic
f_stochastic() =>
    stoch = ta.stoch(close, high, low, 14)
    stoch_K = ta.sma(stoch, 3)
    stoch_D = ta.sma(stoch_K, 3)
    stRD = ta.crossunder(stoch_K, stoch_D)
    stGD = ta.crossover(stoch_K, stoch_D)
    [stoch_K, stoch_D, stRD, stGD]
// VARIABLES
[bbMiddle, bbUpper, bbLower] = ta.bb(close, 20, 2)
[stoch_K, stoch_D, stRD, stGD] = f_stochastic()
// ORDERS
// Active Orders
// Check if strategy has open positions
inLong = strategy.position_size > 0
inShort = strategy.position_size < 0
// Check if strategy reduced position size in last bar
longClose = strategy.position_size < strategy.position_size[1]
shortClose = strategy.position_size > strategy.position_size[1]
// Entry Conditions
// Enter long when during last candle these conditions are true:
// Candle high is greater than upper Bollinger Band
// Stochastic K line crosses under D line and is oversold
longCondition = stOBOS ?
     low[1] < bbLower[1] and stGD[1] and stoch_K[1] < 25 :
     low[1] < bbLower[1] and stGD[1]
// Enter short when during last candle these conditions are true:
// Candle low is lower than lower Bollinger Band
// Stochastic K line crosses over D line and is overbought
shortCondition = stOBOS ?
     high[1] > bbUpper[1] and stRD[1] and stoch_K[1] > 75 :
     high[1] > bbUpper[1] and stRD[1]
// Exit Conditions
// Calculate Take Profit 
longTP1 = strategy.position_avg_price + tp1
longTP2 = strategy.position_avg_price + tp2
shortTP1 = strategy.position_avg_price - tp1
shortTP2 = strategy.position_avg_price - tp2
// Calculate Stop Loss
// Initialise variables
var float longSL = 0.0
var float shortSL = 0.0
// When not in position, set stop loss using close price which is the price used during backtesting
// When in a position, check to see if the position was reduced on the last bar
// If it was, set stop loss to position entry price. Otherwise, maintain last stop loss value
longSL := if inLong and ta.barssince(longClose) < ta.barssince(longCondition)
    strategy.position_avg_price
else if inLong
    longSL[1]
else
    close - sl
shortSL := if inShort and ta.barssince(shortClose) < ta.barssince(shortCondition)
    strategy.position_avg_price
else if inShort
    shortSL[1]
else
    close + sl
// Manage positions
strategy.entry("Long", strategy.long, when=longCondition)
strategy.exit("TP1/SL", from_entry="Long", qty_percent=50, limit=longTP1, stop=longSL)
strategy.exit("TP2/SL", from_entry="Long", limit=longTP2, stop=longSL)
strategy.entry("Short", strategy.short, when=shortCondition)
strategy.exit("TP1/SL", from_entry="Short", qty_percent=50, limit=shortTP1, stop=shortSL)
strategy.exit("TP2/SL", from_entry="Short", limit=shortTP2, stop=shortSL)
// DRAW
// Stochastic Chart
plot(stoch_K, color=color.blue)
plot(stoch_D, color=color.orange)
// Circles
plot(stOBOS ? stRD and stoch_K >= 75 ? stoch_D : na : stRD ? stoch_D : na, color=colorRed, style=plot.style_circles, linewidth=3)
plot(stOBOS ? stGD and stoch_K <= 25 ? stoch_D : na : stGD ? stoch_K : na, color=colorGreen, style=plot.style_circles, linewidth=3)
// Levels
hline(75, linestyle=hline.style_dotted)
hline(25, linestyle=hline.style_dotted)
Expand (120 lines)