PineForge Cascade MTF Tuple

//@version=6
// SPDX-License-Identifier: Apache-2.0
// Copyright 2026 PineForge
// PineForge Corporate Strategy: Cascade MTF Tuple
// A tuple materializes higher-timeframe center and volatility from one request.
strategy("PineForge — Cascade MTF Tuple", overlay=true,
     initial_capital=100000,
     default_qty_type=strategy.fixed, default_qty_value=2,
     pyramiding=0, commission_type=strategy.commission.percent,
     commission_value=0.05, slippage=1,
     margin_long=100, margin_short=100,
     process_orders_on_close=false, calc_on_order_fills=false)

higherTimeframe = input.timeframe("240", "Higher Timeframe", group="Signal")
centerLength = input.int(27, "Higher EMA", minval=3, group="Signal")
atrLength = input.int(15, "Higher ATR", minval=2, group="Signal")
entryDistance = input.float(0.35, "Entry Distance ATR", minval=0, step=0.05, group="Signal")
stopAtr = input.float(2.0, "Stop Higher ATR", minval=0.5, step=0.1, group="Risk")

[higherCenter, higherAtr] = request.security(syminfo.tickerid, higherTimeframe,
     [ta.ema(close, centerLength), ta.atr(atrLength)],
     gaps=barmerge.gaps_off, lookahead=barmerge.lookahead_off)
entryLine = higherCenter + higherAtr * entryDistance

if ta.crossover(close, entryLine)
    strategy.entry("Cascade Long", strategy.long)
if strategy.position_size > 0 and close < higherCenter
    strategy.close("Cascade Long", comment="Higher center lost")
if strategy.position_size > 0
    strategy.exit("Cascade Guard", from_entry="Cascade Long",
         stop=strategy.position_avg_price - higherAtr * stopAtr)

plot(higherCenter, "Higher Center", color=color.blue)
plot(entryLine, "Tuple Entry Line", color=color.green)