//@version=6
// SPDX-License-Identifier: Apache-2.0
// Copyright 2026 PineForge
// PineForge Corporate Strategy: Rivet Calc Fill
// Fill-triggered recalculation attaches risk only after a position exists.
strategy("PineForge — Rivet Calc Fill", 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=true, calc_on_order_fills=true)
fastLength = input.int(11, "Fast EMA", minval=2, group="Signal")
slowLength = input.int(37, "Slow EMA", minval=3, group="Signal")
atrLength = input.int(15, "ATR Length", minval=2, group="Risk")
stopAtr = input.float(1.7, "Stop ATR", minval=0.5, step=0.1, group="Risk")
targetAtr = input.float(2.2, "Target ATR", minval=0.5, step=0.1, group="Risk")
fastEma = ta.ema(close, fastLength)
slowEma = ta.ema(close, slowLength)
atrValue = ta.atr(atrLength)
if ta.crossover(fastEma, slowEma) and strategy.position_size == 0
strategy.entry("Rivet Long", strategy.long)
if strategy.position_size > 0
strategy.exit("Rivet Attached Risk", from_entry="Rivet Long",
stop=strategy.position_avg_price - atrValue * stopAtr,
limit=strategy.position_avg_price + atrValue * targetAtr)
plot(fastEma, "Fast EMA", color=color.aqua)
plot(slowEma, "Slow EMA", color=color.orange)