BB RSI Strategy

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © infinityhao

//@version=4
strategy("BB RSI Strategy", overlay=true, calc_on_every_tick = true, initial_capital = 18500,
     currency = currency.USD, commission_type = strategy.commission.cash_per_order, commission_value = 30)

// Input Section
length   = input(35, minval=1, title = "BB: SMA")
mult     = input(2.0, minval=0.001, maxval=50, title = "Standard Deviation")
rsiLength= input(21, minval=1, title = "RSI length")
shortRSI = input(70, minval=1, maxval=100, title = "Short RSI percent")
longRSI  = input(40, minval=1, maxval=100, title = "Long RSI percent")
MAVisible= input(true, title = "Moving Averages Visible")

// Bollinger Bands
basis = sma(close, length)
dev = mult * stdev(close, length)
upperBand = basis + dev
lowerBand = basis - dev

// Moving Averages
ma50 = sma(close,50)
ma100 = sma(close,100)
ma150 = sma(close,150)
ma200 = sma(close,200)

// RSI
strength = rsi(close, rsiLength)

p1 = plot(upperBand, color=color.gray)
p2 = plot(lowerBand, color=color.gray)
fill(p1, p2)
p3 = plot(MAVisible?ma50:na, color=color.red)
p4 = plot(MAVisible?ma100:na, color=color.blue)
p5 = plot(MAVisible?ma150:na, color=color.green)
p6 = plot(MAVisible?ma200:na, color=color.orange)

// Order Units
amount = 0.1 * (strategy.initial_capital + strategy.netprofit) - strategy.losstrades
qty = floor(amount / close)

// Strategy Section
longCondition = close < lowerBand and strength < longRSI
shortCondition = close > upperBand and strength > shortRSI

// Order Execution Section
if (longCondition)
    strategy.order("Long", strategy.long, qty, when=strategy.position_size < qty * 5)

if (shortCondition)
    strategy.order("Short", strategy.short, qty, when=strategy.position_size > 0)

// Create alert conditions
alertcondition(longCondition and (strategy.long == true), message="BB RSI Strategy @ {{close}}")
alertcondition(shortCondition and (strategy.short == true),  message="BB RSI Strategy @ {{close}}")