ModemRS 2.0

local modemSides = {}
local rsSides = {}
local channels = {}
local computerType = "input"
local analog = true

local version = "2.0.1"
local i
local l
local _
local temp
local message
local rsState
local lastState = false
local stateStack = 0
local analogNumber
local lastAnalog = 0
local analogStack = 0
local bundledStates = {}
local bundledString
local lastBundled = {}
local bundledStack = {}
local bundledNumber
local modems = {}
local bundledValues = {1,2,4,8,16,32,64,128,256,512,1024,2048,4096,8192,16384,32768}
local rsData = {state,analog,bundled}

local function startup()
    term.clear()
    term.setCursorPos(1,1)
    print("Running ModemRS version "..version.." by Jyzarc27")
    for i = 1,#modemSides do
        if peripheral.getType(modemSides[i]) == "modem" then
            modems[#modems+1] = peripheral.wrap(modemSides[i])
        end
    end
    for i = 1,#modems do
        for l = 1,#channels do
            modems[i].open(channels[l])
        end
    end
    for i = 1,16 do
        lastBundled[i] = false
        bundledStack[i] = 0
    end
end

local function getState()
    rsState = false
    for i = 1,#rsSides do
        rsState = rsState or rs.getInput(rsSides[i])
    end
    temp = rsState
    if rsState == lastState then
        rsState = 0
    else
        if rsState then
            rsState = 1
        else
            rsState = -1
        end
    end
    lastState = temp
    return rsState
end

local function setState(rsState)
    if rsState == 1 then
        stateStack = stateStack + 1
    elseif rsState == -1 then
        stateStack = stateStack -1
    end
    for i = 1, #rsSides do
        if stateStack < 0 then
            stateStack = 0
        elseif stateStack > 0 then
            rs.setOutput(rsSides[i],true)
        else
            rs.setOutput(rsSides[i],false)
        end
    end
end

local function getAnalog()
    analogNumber = 0
    for i = 1,#rsSides do
        analogNumber = analogNumber + rs.getAnalogInput(rsSides[i])
    end
    temp = analogNumber
    analogNumber = analogNumber - lastAnalog
    lastAnalog = temp
    return analogNumber
end

local function setAnalog(analogNumber)
    analogStack = analogStack + analogNumber
    if analogStack < 0 then
        analogStack = 0
    end
    for i = 1,#rsSides do
        if analogStack > 15 then
            rs.setAnalogOutput(rsSides[i],15)
        else
            rs.setAnalogOutput(rsSides[i],analogStack)
        end
    end
end

local function getBundled()
    for i = 1,16 do
        bundledStates[i] = false
    end
    for i = 1,16 do
        for l = 1,#rsSides do
            bundledStates[i] = bundledStates[i] or rs.testBundledInput(rsSides[l],bundledValues[i])
        end
        temp = bundledStates[i]
        if bundledStates[i] == lastBundled[i] then
            bundledStates[i] = 0
        else
            if bundledStates[i] then
                bundledStates[i] = 1
            else
                bundledStates[i] = -1
            end
        end
        lastBundled[i] = temp
    end
    bundledString = textutils.serialize(bundledStates)
    return bundledString
end

local function setBundled(bundledString)
    bundledNumber = 0
    bundledStates = textutils.unserialize(bundledString)
    for i = 1,16 do
        if bundledStates[i] == 1 then
            bundledStack[i] = bundledStack[i] + 1
        elseif bundledStates[i] == -1 then
            bundledStack[i] = bundledStack[i] - 1
        end
        if bundledStack[i] < 0 then
            bundledStack[i] = 0
        elseif bundledStack[i] > 0 then
            bundledNumber = bundledNumber + bundledValues[i]
        end
    end
    for i = 1,#rsSides do
        rs.setBundledOutput(rsSides[i],bundledNumber)
    end
end

startup()

if computerType == "input" then
    while true do
        rsData.state = getState()
        rsData.analog = getAnalog()
        rsData.bundled = getBundled()
        message = textutils.serialize(rsData)
        for i = 1,#modems do
            for l = 1,#channels do
                modems[i].transmit(channels[l],channels[1],message)
            end
        end
        os.pullEvent("redstone")
    end
end

if computerType == "output" then
    while true do
        _,_,_,_,message = os.pullEvent("modem_message")
        rsData = textutils.unserialize(message)
        if analog then
            setAnalog(rsData.analog)
        else
            setState(rsData.state)
        end
        setBundled(rsData.bundled)
    end
end