রেইনবো অসিলেটর ট্রেডিং কৌশল

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

//@version=5
strategy("Rainbow Oscillator [Strategy]", overlay=false, margin_long=100, margin_short=100, initial_capital = 2000)

bool trendFilter = input.bool(true, 'Use trend filter')
float w1 = input.float(0.33, 'RSI Weight', 0, 1, 0.01)
float w2 = input.float(0.33, 'CCI Weight', 0, 1, 0.01)
float w3 = input.float(0.33, 'Stoch Weight', 0, 1, 0.01)
int fastPeriod = input.int(16, 'Ocillograph Fast Period', 4, 60, 1)
int slowPeriod = input.int(22, 'Ocillograph Slow Period', 4, 60, 1)
int oscillographSamplePeriod = input.int(8, 'Oscillograph Samples Period', 1, 30, 1)
int oscillographSamplesCount = input.int(2, 'Oscillograph Samples Count', 0, 4, 1)
string oscillographMAType = input.string("RMA", "Oscillograph Samples Type", options = ["EMA", "SMA", "RMA", "WMA"])
int levelPeriod = input.int(26, 'Level Period', 2, 100)
int levelOffset = input.int(0, 'Level Offset', 0, 200, 10)
float redunant = input.float(0.5, 'Level Redunant', 0, 1, 0.01)
int levelSampleCount = input.int(2, 'Level Smooth Samples', 0, 4, 1)
string levelType = input.string("RMA", "Level MA type", options = ["EMA", "SMA", "RMA", "WMA"])

perc(current, prev) => ((current - prev) / prev) * 100

smooth(value, type, period) =>
    float ma = switch type
        "EMA" => ta.ema(value, period)
        "SMA" => ta.sma(value, period)
        "RMA" => ta.rma(value, period)
        "WMA" => ta.wma(value, period)
        =>
            runtime.error("No matching MA type found.")
            float(na)

getSample(value, samples, type, period) =>
    float ma = switch samples
        0 => value
        1 => smooth(value, type, period)
        2 => smooth(smooth(value, type, period), type, period)
        3 => smooth(smooth(smooth(value, type, period), type, period), type, period)
        4 => smooth(smooth(smooth(smooth(value, type, period), type, period), type, period), type, period)

float takeProfit = input.float(5, "% Take profit", 0.8, 100, step = 0.1)  / 100
float stopLoss = input.float(2, "% Stop Loss", 0.8, 100, step = 0.1) / 100
float magicFast = w2 * ta.cci(close, fastPeriod) + w1 * (ta.rsi(close, fastPeriod) - 50) + w3 * (ta.stoch(close, high, low, fastPeriod) - 50)
float magicSlow = w2 * ta.cci(close, slowPeriod) + w1 * (ta.rsi(close, slowPeriod) - 50) + w3 * (ta.stoch(close, high, low, slowPeriod) - 50)
float sampledMagicFast = getSample(magicFast, oscillographSamplesCount, oscillographMAType, oscillographSamplePeriod)
float sampledMagicSlow = getSample(magicSlow, oscillographSamplesCount, oscillographMAType, oscillographSamplePeriod)
float lastUpperValue = 0
float lastLowerValue = 0

if (magicFast > 0)
    lastUpperValue := math.max(magicFast, magicFast[1])
else 
    lastUpperValue := math.max(0, lastUpperValue[1]) * redunant

    
if (magicFast <= 0)
    lastLowerValue := math.min(magicFast, magicFast[1])
else
    lastLowerValue := math.min(0, lastLowerValue[1]) * redunant

float level1up = getSample( (magicFast >= 0 ? magicFast : lastUpperValue) / 4, levelSampleCount, levelType, levelPeriod) + levelOffset
float level2up = getSample( (magicFast >= 0 ? magicFast : lastUpperValue) / 2, levelSampleCount, levelType, levelPeriod) + levelOffset
float level3up = getSample( magicFast >= 0 ? magicFast : lastUpperValue, levelSampleCount, levelType, levelPeriod) + levelOffset
float level4up = getSample( (magicFast >= 0 ? magicFast : lastUpperValue) * 2, levelSampleCount, levelType, levelPeriod) + levelOffset

float level1low = getSample( (magicFast <= 0 ? magicFast : lastLowerValue) / 4, levelSampleCount, levelType, levelPeriod) - levelOffset
float level2low = getSample( (magicFast <= 0 ? magicFast : lastLowerValue) / 2, levelSampleCount, levelType, levelPeriod) - levelOffset
float level3low = getSample( magicFast <= 0 ? magicFast : lastLowerValue, levelSampleCount, levelType, levelPeriod) - levelOffset
float level4low = getSample( (magicFast <= 0 ? magicFast : lastLowerValue) * 2, levelSampleCount, levelType, levelPeriod) - levelOffset

var transparent = color.new(color.white, 100)
var overbough4Color = color.new(color.red, 75)
var overbough3Color = color.new(color.orange, 75)
var overbough2Color = color.new(color.yellow, 75)

var oversold4Color = color.new(color.teal, 75)
var oversold3Color = color.new(color.blue, 75)
var oversold2Color = color.new(color.aqua, 85)

upperPlotId1 = plot(level1up, 'Upper1', transparent)
upperPlotId2 = plot(level2up, 'Upper2', transparent)
upperPlotId3 = plot(level3up, 'Upper3', transparent)
upperPlotId4 = plot(level4up, 'Upper4', transparent)

fastColor = color.new(color.teal, 60)
slowColor = color.new(color.red, 60)
fastPlotId = plot(sampledMagicFast, 'fast', color = fastColor)
slowPlotId = plot(sampledMagicSlow, 'slow', color = slowColor)

lowerPlotId1 = plot(level1low, 'Lower1', transparent)
lowerPlotId2 = plot(level2low, 'Lower2', transparent)
lowerPlotId3 = plot(level3low, 'Lower3', transparent)
lowerPlotId4 = plot(level4low, 'Lower4', transparent)

fill(upperPlotId4, upperPlotId3, overbough4Color)
fill(upperPlotId3, upperPlotId2, overbough3Color)
fill(upperPlotId2, upperPlotId1, overbough2Color)

fill(lowerPlotId4, lowerPlotId3, oversold4Color)
fill(lowerPlotId3, lowerPlotId2, oversold3Color)
fill(lowerPlotId2, lowerPlotId1, oversold2Color)

upTrend = sampledMagicFast > sampledMagicFast[1]
buySignal = ((upTrend or not trendFilter) and ta.crossunder(sampledMagicSlow, sampledMagicFast)) ? sampledMagicSlow : na
sellSignal = ((not upTrend or not trendFilter) and ta.crossover(sampledMagicSlow, sampledMagicFast)) ? sampledMagicSlow : na
diff = sampledMagicSlow - sampledMagicFast

fill(fastPlotId, slowPlotId, upTrend ? fastColor : slowColor)
plot(buySignal, color = color.aqua, style = plot.style_circles, linewidth = 4)
plot(sellSignal, color = color.red, style = plot.style_circles, linewidth = 4)


// longCondition = upTrend != upTrend[1] and upTrend
long_take_level = strategy.position_avg_price * (1 + takeProfit)
long_stop_level = strategy.position_avg_price * (1 - stopLoss)

short_take_level = strategy.position_avg_price * (1 - takeProfit)
short_stop_level = strategy.position_avg_price * (1 + stopLoss)

strategy.close(id="Long", when=sellSignal, comment = "Exit")
strategy.close(id="Short", when=buySignal, comment = "Exit")

strategy.entry("Long", strategy.long, when=buySignal)
strategy.entry("Short", strategy.short, when=sellSignal)

strategy.exit("Take Profit/ Stop Loss","Long", stop=long_stop_level, limit=long_take_level)
strategy.exit("Take Profit/ Stop Loss","Short", stop=short_stop_level, limit=short_take_level)


// plot(long_stop_level, color=color.red, overlay=true)
// plot(long_take_level, color=color.green)