NSDT HAMA Candles Strategy

15 hours ago

//version=5
strategy("NSDT HAMA Candles Strategy", overlay=true, default_qty_type=strategy.percent_of_equity, default_qty_value=10, initial_capital=10000, currency=currency.USD)

// -----------------------------
// Gradient Function
// -----------------------------
f_c_gradientAdvDecPro(_source, _center, _steps, _c_bearWeak, _c_bearStrong, _c_bullWeak, _c_bullStrong) =>
var float _qtyAdvDec = 0.0
var float _maxSteps = math.max(1, _steps)
bool _xUp = ta.crossover(_source, _center)
bool _xDn = ta.crossunder(_source, _center)
float _chg = ta.change(_source)
bool _up = _chg > 0
bool _dn = _chg < 0
bool _srcBull = _source > _center
bool _srcBear = _source < _center
_qtyAdvDec :=
_srcBull ? (_xUp ? 1 : _up ? math.min(_maxSteps, _qtyAdvDec + 1) : _dn ? math.max(1, _qtyAdvDec - 1) : _qtyAdvDec) :
_srcBear ? (_xDn ? 1 : _dn ? math.min(_maxSteps, _qtyAdvDec + 1) : _up ? math.max(1, _qtyAdvDec - 1) : _qtyAdvDec) :
_qtyAdvDec
var color _return = na
_return :=
_srcBull ? color.new(color.lime, 0) :
_srcBear ? color.new(color.red, 0) :
color.new(color.yellow, 0) // Neutral color as yellow
_return

// -----------------------------
// MA Calculation Function
// -----------------------------
mat(source, length, type) =>
switch type
"SMA" => ta.sma(source, length)
"EMA" => ta.ema(source, length)
"RMA" => ta.rma(source, length)
"WMA" => ta.wma(source, length)
"VWMA" => ta.vwma(source, length)
"HMA" => ta.hma(source, length)
"TMA" => ta.sma(ta.sma(source, length), length)
=> na

// -----------------------------
// Inputs
// -----------------------------
bull = input.color(color.new(color.green, 0), title = "Bull Color")
bear = input.color(color.new(color.red, 0), title = "Bear Color")
neutral = input.color(color.new(color.yellow, 0), title = "Neutral Color")
show_ma = input.bool(true, title = "Show MA")
ma_type = input.string("WMA", title = "MA Type", options=["SMA", "EMA", "RMA", "WMA", "VWMA", "HMA", "TMA"])
ma_source = input.source(close, title = "MA Source")
ma_length = input.int(55, title = "MA Length", minval=1)
UseGradient = input.bool(true, title = "Use Gradient Colors")
stepn = input.int(5, title = "Max Gradient Steps", minval=1)

// Calculate MA and Gradient Color
ma = mat(ma_source, ma_length, ma_type)
col = f_c_gradientAdvDecPro(ma, ta.ema(ma, 3), stepn, neutral, bear, neutral, bull)

// -----------------------------
// MA Info Inputs
// -----------------------------
WickColor = input.color(color.new(color.gray, 80), title = "Wick Color", tooltip="Suggest Full Transparency.")
OpenLength = input.int(25, minval=1, title="Length Open", inline="Open")
OpenType = input.string('EMA', title='Type', options=['EMA', 'SMA', 'WMA'], inline="Open")
HighLength = input.int(20, minval=1, title="Length High", inline="High")
HighType = input.string('EMA', title='Type', options=['EMA', 'SMA', 'WMA'], inline="High")
LowLength = input.int(20, minval=1, title="Length Low", inline="Low")
LowType = input.string('EMA', title='Type', options=['EMA', 'SMA', 'WMA'], inline="Low")
CloseLength = input.int(20, minval=1, title="Length Close", inline="Close")
CloseType = input.string('EMA', title='Type', options=['EMA', 'SMA', 'WMA'], inline="Close")
LengthMA = input.int(55, minval=1, title="MA Line Length", inline="MA Info")
MAType = input.string('EMA', title='MA Line Type', options=['EMA', 'SMA', 'WMA'], inline="MA Info")
MASource = input.source(hl2, title="MA Source")

// Function to Calculate Moving Averages
funcCalcMA1(type1, src1, len1) =>
switch type1
"EMA" => ta.ema(src1, len1)
"SMA" => ta.sma(src1, len1)
"WMA" => ta.wma(src1, len1)
=> na

funcCalcOpen(type_open, src_open, len_open) =>
switch type_open
"EMA" => ta.ema(src_open, len_open)
"SMA" => ta.sma(src_open, len_open)
"WMA" => ta.wma(src_open, len_open)
=> na

funcCalcHigh(type_high, src_high, len_high) =>
switch type_high
"EMA" => ta.ema(src_high, len_high)
"SMA" => ta.sma(src_high, len_high)
"WMA" => ta.wma(src_high, len_high)
=> na

funcCalcLow(type_low, src_low, len_low) =>
switch type_low
"EMA" => ta.ema(src_low, len_low)
"SMA" => ta.sma(src_low, len_low)
"WMA" => ta.wma(src_low, len_low)
=> na

funcCalcClose(type_close, src_close, len_close) =>
switch type_close
"EMA" => ta.ema(src_close, len_close)
"SMA" => ta.sma(src_close, len_close)
"WMA" => ta.wma(src_close, len_close)
=> na

// Calculate MA and Candle Components
MA1 = funcCalcMA1(MAType, MASource, LengthMA)
CandleOpen = funcCalcOpen(OpenType, (open[1] + close[1])/2, OpenLength)
CandleHigh = funcCalcHigh(HighType, math.max(high, close), HighLength)
CandleLow = funcCalcLow(LowType, math.min(low, close), LowLength)
CandleClose = funcCalcClose(CloseType, (open + high + low + close)/4, CloseLength)

// Determine Candle Body Color
BodyColor = CandleOpen > CandleOpen[1] ? color.green : color.red

// Apply Colors to Candles and MA Line
barcolor(UseGradient ? col : BodyColor)
plotcandle(CandleOpen, CandleHigh, CandleLow, CandleClose, color=UseGradient ? col : BodyColor, title="HAMA Candles", wickcolor=WickColor, bordercolor=na)
plot(show_ma ? MA1 : na, title="MA Line", color=UseGradient ? col : BodyColor, style=plot.style_line, linewidth=2)

// -----------------------------
// Alerts
// -----------------------------

// Existing Alerts
alertcondition(ta.rising(MA1, 2), title="MA Rising", message="MA Rising")
alertcondition(ta.falling(MA1, 2), title="MA Falling", message="MA Falling")
alertcondition(ta.crossover(high, MA1), title="High Crossing MA", message="High Crossing MA")
alertcondition(ta.crossunder(low, MA1), title="Low Crossing MA", message="Low Crossing MA")

// Custom Alert: Yellow Candle Followed by Higher/Lower Open with Additional Conditions
yellowCandle = (UseGradient ? col == color.new(color.yellow, 0) : BodyColor == color.yellow)
yellowCandleDetected = yellowCandle[1] // Previous candle was yellow

// New Conditions based on user requirements
// For Buy: Previous yellow candle's close < close of candle before yellow candle, and current open > open of yellow candle
previousYellowClose = CandleClose[1] // Close of yellow candle
previousCloseBeforeYellow = close[2] // Close of the candle before yellow candle
currentOpen = open
openOfYellowCandle = CandleOpen[1] // Open of yellow candle

buyCondition = yellowCandleDetected and (previousYellowClose < previousCloseBeforeYellow) and (currentOpen > openOfYellowCandle)
alertcondition(buyCondition, title="Buy Signal", message="Buy signal: A yellow candle was followed by a candle with a higher open and the yellow candle's close was lower than the previous candle's close.")

// For Sell: Previous yellow candle's close > close of candle before yellow candle, and current open < open of yellow candle
sellCondition = yellowCandleDetected and (previousYellowClose > previousCloseBeforeYellow) and (currentOpen < openOfYellowCandle)
alertcondition(sellCondition, title="Sell Signal", message="Sell signal: A yellow candle was followed by a candle with a lower open and the yellow candle's close was higher than the previous candle's close.")

// Additional Alerts When a Yellow Candle Appears
alertcondition(yellowCandle, title="Yellow Candle Appeared", message="A yellow candle has appeared on the chart.")

// -----------------------------
// Strategy Entry and Exit
// -----------------------------

// Strategy Entry based on Buy and Sell Conditions
if (buyCondition)
strategy.entry("Buy", strategy.long)

if (sellCondition)
strategy.entry("Sell", strategy.short)

// Example Exit Conditions (Bạn có thể tùy chỉnh thêm)
exitLongCondition = ta.crossunder(ma, ta.ema(ma, 3)) // Exit long when MA crosses under its EMA
if (exitLongCondition)
strategy.close("Buy")

exitShortCondition = ta.crossover(ma, ta.ema(ma, 3)) // Exit short when MA crosses over its EMA
if (exitShortCondition)
strategy.close("Sell")

// -----------------------------
// Watermark
// -----------------------------
var table Watermark = table.new(position.bottom_left, 1, 1, border_width = 0)
if barstate.islast
table.cell(Watermark, 0, 0, text="North Star Day Trading - NSDT HAMA Candles Strategy", text_color=color.new(color.white, 95), text_size=size.small, bgcolor=color.new(color.black, 100))