reactor

local tArgs = { ... }
local function printUsage()
    print ( "Usages:" )
    print ( "reactor <inputSide> <outputSide> <onTime> <offTime>")
end
if #tArgs == 4 then
    local sIn = tArgs[1]
    local sOut = tArgs[2]
    local nOnCycle = tonumber( tArgs[3] ) or 60
    local nOffCycle = tonumber( tArgs[4] ) or 20
    local bTick = true
    while redstone.getInput( sIn ) do
        if bTick then
            io.write ( "\nOn Cycle Start\n" )
   io.write ( nOnCycle )
            redstone.setOutput( sOut, true )
            for n = 0, nOnCycle , 1 do
                if n % 5 == 0 then
                    io.write ( "\n" )
                    io.write ( n )
                    io.write ( "/" )
                    io.write ( nOnCycle )
                end
                if redstone.getInput( sIn ) == false then break end
                sleep ( 1 )
            end
            bTick = false
        else
            io.write ( "\nOff Cycle Start" )
            redstone.setOutput ( sOut, false )
            for n = 0, nOffCycle, 1 do
                if n % 5 == 0 then
                    io.write ( "\n" )
                    io.write ( n )
                    io.write ( "/" )
                    io.write ( nOffCycle )
                end
                if redstone.getInput( sIn ) == false then break end
                sleep ( 1 )
            end
            bTick = true
        end
    end
    io.write ( "\nNo redstone input from " )
    io.write ( sIn )
    io.write ( " side." )
else
    printUsage()
end