Hull MA Ribbon Indicator

-- Author: Fogg
-- Hull MA Ribbon indicator inspired by Inisilico's Hull Suite
-- Original Hull Suite here: https://www.tradingview.com/script/hg92pFwS-Hull-Suite/
-- Select following MAs for Original Hull Suite types: Inisilico HMA = WMA type, Insilico EHMA = EMA Type, no equivalent for Insilico THMA
-- Get creative with the other MA types
-- Generates continuous Buy/Sell signals based on ribbon status


-- Definitions
DefineCommand('HULLMA_RIBBON', 'HMA Indicator Ribbon')
local chartIndex = DefineParameter(NumberType, 'chartIndex', 'Index to plot Hull Ribbon', true, 0, 'Number')
local length = DefineParameter(NumberType, 'HMA Length', 'HMA Length', true, 50, 'HMA Length - 10-50 for fast HMA, 100-200 for longer swings')
local interval = DefineParameter(NumberType, 'interval', '', false, CurrentInterval(), 'Number, InputInterval')

--INPUT
InputGroupHeader('HULL MA Type')
local hmatype = InputMaTypes('MA Type', WmaType, 'MA Type use to calculate Hull MA.  For baseline HMA choose Wma. NOTE - Tema and T3 will return depth limit errors if the Length is too long')

--PRICES
local c = ClosePrices(interval)


local fast, slow = OptimizedForInterval(
    interval, function()

-- HMA
    local hma =  CC_HMA(c, length, hmatype)

--Plots
    local FHULL = hma[1]
    local SHULL = hma[3]
    local h1 = Plot(0, 'FHULL', FHULL, Green)
    local h2 = Plot(0, 'SHULL', SHULL, Red)
    PlotCloud(h1, h2, 50)
    return FHULL, SHULL
end)

-- Signal Conditions
local signal = GetAboveBelowSignal(fast, slow)


--PlotSignalEnum(-2, signal)
DefineOutput(EnumType, signal, 'HMA Signal')