Support and Resistance Oscillator [CC]

// Copyright (c) 2019-present, Franklin Moormann (cheatcountry)
// Support and Resistance Oscillator [CC] script may be freely distributed under the MIT license.
// ------------------------------------------------------------------------------------------------
// Original author:  cheatcountry
// Original title:   Support and Resistance Oscillator [CC]
// Licence:          MIT (the header above is the original notice, kept verbatim)
// Pine version:     5
// Fetched:          2026-10-12
// Ported to FloScript by FloSignals; modifications under MPL-2.0.
// Converter:        @flosignals/floscript 0.1.0, strict mode, score 100/100
// ------------------------------------------------------------------------------------------------
//@floscript=1
//@version=5
indicator("Support and Resistance Oscillator [CC]", overlay=false)

requestSecurity(string _symbol, string _res, bool _repaints) =>
    repIndex = _repaints ? 0 : barstate.isrealtime ? 1 : 0
    resIndex = _repaints ? 0 : barstate.isrealtime ? 0 : 1
    [h, l, o, c] = [high[repIndex], low[repIndex], open[repIndex], close[repIndex]]
    [h[resIndex], l[resIndex], o[resIndex], c[resIndex]]

var GRP1 = "General Settings"
string res = input.timeframe(title="Resolution", defval="", group=GRP1)
int length = input.int(title="Length", defval=7, minval=2, step=1, group=GRP1)
int smoothLength = input.int(title="Smoothing Length", defval=4, minval=1, step=1, group=GRP1)
float threshold = input.float(title="Threshold Level", defval=1.0, minval=0.01, step=0.01, group=GRP1)
bool rep = input.bool(title="Allow Repainting?", defval=false, group=GRP1)
bool bar = input.bool(title="Allow Bar Color Change?", defval=true, group=GRP1)
[h, l, o, c] = requestSecurity(syminfo.tickerid, res, rep)

float tr = math.max(h - l, math.abs(h - nz(c[1])), math.abs(l - nz(c[1])))
float trh = math.max(nz(h[1]), nz(c[2]))
float trl = math.min(nz(l[1]), nz(c[2]))
float tro = math.max(o, nz(o[1]))
float trc = math.max(c, nz(c[1]))

float sro = tr != 0 ? (trh - tro + (trc - trl)) / (2 * tr) : 0
float sroSig = ta.sma(sro - nz(sro[1]), smoothLength)
float sroSm = ta.wma((sro - sroSig) * 2, length)

hline(0)
hline(threshold)
float slo = sroSm - threshold
int sig = slo > 0 ? (slo > nz(slo[1]) ? 2 : 1) : slo < 0 ? (slo < nz(slo[1]) ? -2 : -1) : 0
alertcondition(ta.crossover(sig, 1), 'Strong Buy Signal', 'Strong Bullish Change Detected')
alertcondition(ta.crossunder(sig, -1), 'Strong Sell Signal', 'Strong Bearish Change Detected')
alertcondition(ta.crossover(sig, 0), 'Buy Signal', 'Bullish Change Detected')
alertcondition(ta.crossunder(sig, 0), 'Sell Signal', 'Bearish Change Detected')
alertcondition(ta.crossover(sig, 1) or ta.crossover(sig, 0), "All Buy Signals", "Any Bullish Change Detected")
alertcondition(ta.crossunder(sig, -1) or ta.crossunder(sig, 0), "All Sell Signals", "Any Bearish Change Detected")
color sroColor = sig > 1 ? color.green : sig > 0 ? color.lime : sig < -1 ? color.maroon : sig < 0 ? color.red : na
barcolor(bar ? sroColor : na)
plot(sroSm, "SRO", sroColor, linewidth=2, style=plot.style_histogram)

This file is under the MIT License; it is a port of the original by cheatcountry, with the original licence header kept and the changes made for FloScript noted in the file.

• v22026-10-14

  Library refresh 2026-10-14

• v12026-10-12

  Library refresh 2026-10-12