Pine Script → MT5 Smart-Money Indicator Port and EAs

The problem

The client sold a smart-money-concepts indicator on TradingView and wanted the same product on MetaTrader 5, plus EAs that trade it. The port had to match TradingView bar for bar: same plots, same signals, same defaults.

What I built

• Indicator port: trend line, internal and swing break of structure / change of character, order blocks, equal highs and lows, fair value gaps, multi-timeframe levels, premium/discount zones and a momentum oscillator. Every Pine input is kept with its original default.
• Rendering map:
  • plotcandle and barcolor became one colour-candles plot
  • lines, labels and boxes became chart objects, with a 500-object FIFO per type (Pine’s limits)
  • transparency is emulated by blending colours against the chart background
  • alerts are de-duplicated per bar
• Signal EA that reads the indicator through iCustom:
  • four entry sources (trend flip, oscillator signal, confluence, flip plus oscillator confirmation), an optional structure trend filter and closed-bar entries
  • stops in pips, ATR or at the last swing; targets in pips, ATR or R-multiple
  • five trailing modes, including trailing on the indicator’s own lines, with breakeven stacked on top
  • fixed lot or risk-percent sizing, a spread cap, time windows across midnight and max positions
• Fusion EA: two more Pine indicators (a SuperTrend/ADX tool and a pivot-based buy/sell tool) rebuilt inside a single EA, with no indicator install. It adds four engine modes, breakeven, fixed, ATR or SuperTrend trailing, a time-based profit exit, a max-drift check before entry, and a hedging-account check.
• Manuals in Markdown and PDF, and builds with zero compiler warnings.

Details

• Pine semantics, reproduced:
  • each call site keeps its own var state
  • EMA and RMA seeding match Pine
  • a percentile function is rebuilt with quickselect
  • known quirks in the original are kept on purpose, so signals match
• Live-bar repainting: the stateful structure engine snapshots its state after the last closed bar. On every tick it rolls back and replays the forming bar, which reproduces TradingView’s live behaviour.
• iCustom limit: MT5 passes at most 64 parameters. Inputs were reordered so every setting the EA drives fits in the first 57.
• A repainting source made tradable: the pivot-based tool repaints on TradingView, so the EA only acts on confirmed pivots. The resulting entry lag is documented for the client rather than hidden.