Simple NIFTY Stochastic CE PE System PRAKASAN

//version=6
indicator(
title = "Simple NIFTY Stochastic CE PE System",
shorttitle = "Simple CE PE",
overlay = true
)

//--------------------------------------------------
// INPUTS
//--------------------------------------------------

stochLength = input.int(14, "Stochastic Length")
smoothK = input.int(3, "K Smoothing")
smoothD = input.int(3, "D Smoothing")

oversoldLevel = input.int(20, "Oversold Level")
overboughtLevel = input.int(80, "Overbought Level")

emaLength = input.int(20, "EMA Length")

useVWAP = input.bool(true, "Use VWAP Filter")
showEMA = input.bool(true, "Show EMA")
showVWAP = input.bool(true, "Show VWAP")

//--------------------------------------------------
// INDICATORS
//--------------------------------------------------

emaValue = ta.ema(close, emaLength)
vwapValue = ta.vwap(hlc3)

rawStoch = ta.stoch(close, high, low, stochLength)
stochK = ta.sma(rawStoch, smoothK)
stochD = ta.sma(stochK, smoothD)

//--------------------------------------------------
// TREND FILTER
//--------------------------------------------------

bullishTrend =
close > emaValue and
(not useVWAP or close > vwapValue)

bearishTrend =
close < emaValue and
(not useVWAP or close < vwapValue)

//--------------------------------------------------
// STOCHASTIC SIGNALS
//--------------------------------------------------

// Buy CE when Stochastic crosses upward from oversold
bullishSignal =
ta.crossover(stochK, stochD) and
stochK < 35 and
bullishTrend

// Buy PE when Stochastic crosses downward from overbought
bearishSignal =
ta.crossunder(stochK, stochD) and
stochK > 65 and
bearishTrend

//--------------------------------------------------
// TRADE STATE
//--------------------------------------------------

// 0 = waiting for CE
// 1 = CE active
// 2 = waiting for PE
// -1 = PE active

var int tradeState = 0

bool buyCE = false
bool exitCE = false
bool buyPE = false
bool exitPE = false

buyCE := false
exitCE := false
buyPE := false
exitPE := false

//--------------------------------------------------
// SIGNAL SEQUENCE
//--------------------------------------------------

// Step 1: Buy CE
if tradeState == 0 and bullishSignal
buyCE := true
tradeState := 1

// Step 2: Exit CE
if tradeState == 1 and bearishSignal
exitCE := true
tradeState := 2

// Step 3: Generate fresh Buy PE signal
else if tradeState == 2 and bearishSignal
buyPE := true
tradeState := -1

// Step 4: Exit PE
if tradeState == -1 and bullishSignal
exitPE := true
tradeState := 0

//--------------------------------------------------
// CHART SIGNALS
//--------------------------------------------------

plotshape(
buyCE,
title = "BUY CE",
text = "BUY CE",
style = shape.labelup,
location = location.belowbar,
color = color.green,
textcolor = color.white,
size = size.small
)

plotshape(
exitCE,
title = "EXIT CE",
text = "EXIT CE",
style = shape.labeldown,
location = location.abovebar,
color = color.orange,
textcolor = color.white,
size = size.small
)

plotshape(
buyPE,
title = "BUY PE",
text = "BUY PE",
style = shape.labeldown,
location = location.abovebar,
color = color.red,
textcolor = color.white,
size = size.small
)

plotshape(
exitPE,
title = "EXIT PE",
text = "EXIT PE",
style = shape.labelup,
location = location.belowbar,
color = color.blue,
textcolor = color.white,
size = size.small
)

//--------------------------------------------------
// INDICATOR LINES
//--------------------------------------------------

plot(
showEMA ? emaValue : na,
title = "EMA",
color = color.orange,
linewidth = 2
)

plot(
showVWAP ? vwapValue : na,
title = "VWAP",
color = color.purple,
linewidth = 2
)

//--------------------------------------------------
// ALERTS
//--------------------------------------------------

alertcondition(
buyCE,
title = "BUY CE Alert",
message = "BUY CE signal generated."
)

alertcondition(
exitCE,
title = "EXIT CE Alert",
message = "EXIT CE signal generated."
)

alertcondition(
buyPE,
title = "BUY PE Alert",
message = "BUY PE signal generated."
)

alertcondition(
exitPE,
title = "EXIT PE Alert",
message = "EXIT PE signal generated."
)

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