PineForge — Terrace Pyramid

//@version=6
// SPDX-License-Identifier: Apache-2.0
// Copyright 2026 PineForge
// PineForge Corporate Strategy: Terrace Pyramid
// Three explicit one-contract terraces stage exposure only in a rising trend.
strategy("PineForge — Terrace Pyramid", overlay=true,
     initial_capital=100000,
     default_qty_type=strategy.fixed, default_qty_value=1,
     pyramiding=3, 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)

trendLength = input.int(42, "Trend EMA", minval=5, group="Signal")
atrLength = input.int(16, "ATR Length", minval=2, group="Signal")
firstPullback = input.float(0.25, "First Terrace ATR", minval=0, step=0.05, group="Execution")
secondPullback = input.float(0.70, "Second Terrace ATR", minval=0.1, step=0.05, group="Execution")
stopAtr = input.float(2.8, "Portfolio Stop ATR", minval=0.5, step=0.1, group="Risk")

trend = ta.ema(close, trendLength)
atrValue = ta.atr(atrLength)
risingTrend = trend > trend[1] and close > trend
firstTerrace = trend + atrValue * firstPullback
secondTerrace = trend - atrValue * secondPullback

if risingTrend and ta.crossover(close, firstTerrace)
    strategy.entry("Terrace One", strategy.long, qty=1)
if risingTrend and strategy.position_size == 1 and ta.crossunder(close, trend)
    strategy.entry("Terrace Two", strategy.long, qty=1)
if risingTrend and strategy.position_size == 2 and ta.crossunder(close, secondTerrace)
    strategy.entry("Terrace Three", strategy.long, qty=1)

if strategy.position_size > 0
    strategy.exit("Terrace Guard", stop=strategy.position_avg_price - atrValue * stopAtr)
if strategy.position_size > 0 and trend < trend[1]
    strategy.close("Terrace One")
    strategy.close("Terrace Two")
    strategy.close("Terrace Three")

plot(trend, "Trend EMA", color=color.blue)
plot(secondTerrace, "Deep Terrace", color=color.orange)