Elevator V1

local side = "left"
local lastFloorDetection = 0
local directionIsUp = true

local requestFloor = {false, false, false}
local requestFloorColor = {colors.orange, colors.red, colors.blue}
local detectFloorColor = {colors.lightBlue, colors.green, colors.black}

function EnableColor(color)
    redstone.setBundledOutput(side, colors.combine(redstone.getBundledOutput(side), color))
end

function DisableColor(color)
    redstone.setBundledOutput(side, colors.subtract(redstone.getBundledOutput(side), color))
end

function ElevatorUp()
    print("Going up...")
    DisableColor(colors.white)
end

function ElevatorDown()
    print("Going down...")
    EnableColor(colors.white)
end

function GotoFloor(index)

end

function CheckFloors()
    for i, v in ipairs(requestFloorColor) do
        if rs.testBundledInput(side, v) then
            print("Request for floor " .. i)
            return i
        end
    end
end

function DetectFloor()
    for i, v in ipairs(detectFloorColor) do
        if rs.testBundledInput(side, v) then
            print("Detected elevator at floor " .. i)
            return i
        end
    end
end

function Calibrate()
    print("Calibration in progress...")
    ElevatorUp()
end

function RedstoneDetected()
    currentFloor = DetectFloor()

    if currentFloor ~= 0 then
        lastFloorDetection = currentFloor
    else
        floorIndex = CheckFloors()
        GotoFloor(floorIndex)
    end
end

function SimpleElevator()
    if rs.testBundledInput(side, colors.white) then
        return
    end

    print("Redstone input detected...")

    if directionIsUp then
        ElevatorDown()
        directionIsUp = false
    else
        ElevatorUp()
        directionIsUp = true
    end
end

print( "Press E to quit." )
--Main code
while true do
    local e = os.pullEvent()

    if e == "key" then
        print( "You pressed [E]. Exiting program..." )
        break
    end

    if e == "redstone" then
        SimpleElevator()
    end
end