CC Gui menu Final

    --[[
    State is the variable representing the current menu.
    It can be anything as long as it's a string.
    It is easier if you keep the string 'state' as short as possible.
    ]]--

    --[[
    check lights
    ]]--

    l = rs.getBundledInput("back")
    print(l)

    local state = "main"
    local doorsState = "closed"
    local lightsState = "on"
    running = true

    --[[
    Here we define a table containing the options for
    the main menu and the menu on the 'info' screen.
    ]]--
    local tMainOptions = { "[ Programs ]", "[ Info ]", "[ Quit ]" }
    local tInfoOptions = { "[ Credits ]", "[ Back ]" }
    local tProgramsList = { "[ Door Control ]", "[ Lights ]", "[ Back ]" }
    local tDoorControl = { "[ Open ]", "[ Close ]", "[ Back ]" }
    local tLightsControl = { "[ On ]", "[ Off ]", "[ Back ]" }

    --[[
    The following lines of code are function definitions for the
    draw functions of the menu.
    ]]--

    local function drawMain() -- defines the drawMain function, which obviously draws the main menu
            term.clear()
            term.setCursorPos(2,1)
            term.write("Main Menu")
            for i = 1, #tMainOptions do -- starts a for loop to print all the options in the table 'tMainOptions'
                    term.setCursorPos(2,1 + (i * 2)) -- makes the cursor skip a line every time it prints an option
                    term.write(tMainOptions[i]) -- prints the menu options as a 'button'
            end
    end

    local function drawPrograms() -- defines the drawPrograms function, which draws the contents of the 'game'
            term.clear()
            term.setCursorPos(2,1)
            term.write("List of available programs")
            for i = 1, #tProgramsList do
                    term.setCursorPos(2,1 + (i * 2))
                    term.write(tProgramsList[i])
            end
    end

    local function drawDoors() -- defines the drawDoors function, which draws the contents of the 'game'
            term.clear()
            term.setCursorPos(2,1)
            term.write("Doors: " .. doorsState)
            for i = 1, #tDoorControl do
                    term.setCursorPos(2,1 + (i * 2))
                    term.write(tDoorControl[i])
            end
    end

    local function drawLights() -- defines the drawLights function, which draws the contents of the 'game'
            term.clear()
            term.setCursorPos(2,1)
            term.write("Lights: " .. lightsState)
            for i = 1, #tLightsControl do
                    term.setCursorPos(2,1 + (i * 2))
                    term.write(tLightsControl[i])
            end
    end

    local function drawInfo() -- defines the drawInfo function, which is similar to the function 'drawMain()'
            term.clear()
            term.setCursorPos(2,1)
            term.write("Info")
            for i = 1, #tInfoOptions do
                    term.setCursorPos(2,1 + (i * 2))
                    term.write(tInfoOptions[i])
            end
    end

    local function drawCredits() -- defines the drawCredits function
            term.clear()
            term.setCursorPos(2,1)
            term.write("Credits")
            term.setCursorPos(2,2)
            term.write("Chris is a Nigga    ")
            term.write("    NIGNOG")
    end

    --[[
    Here we start the menu's functionality
    ]]--
    while running do -- start an infinite loop
            if state == "main" then -- if the current menu is the main menu
                    drawMain() -- calls the drawMain() function, which draws the main menu
                    local event, button, X, Y = os.pullEvent("mouse_click") -- waits for a mouse click
                    if button == 1 then -- if the user clicks with the left button (1 is left, 2 is right)
                            for i = 1, #tMainOptions do -- some 'complicated' code to check where the mouse click was
                                    if X >= 2 and X <= #(tMainOptions[i]) + 2 and Y == 1 + (i * 2) then
                                            if i == 1 then
                                                    state = "programs"
                                            elseif i == 2 then
                                                    state = "info"
                                            elseif i == 3 then
                                                    state = "exit"
                                            end
                                    end
                            end
                    end
            elseif state == "programs" then
                    drawPrograms() -- draws the contents of the 'game'
                    local event, button, X, Y = os.pullEvent("mouse_click") -- waits for a mouse click
                    if button == 1 then
                            for i = 1, #tProgramsList do
                                    if X >= 2 and X <= #(tProgramsList[i]) + 2 and Y == 1 + (i * 2) then
                                            if i == 1 then
                                                    state = "door_control"
                                            elseif i == 2 then
                                                    state = "lights"
                                            elseif i == 3 then
                                                    state = "main"
                                            end
                                    end
                            end
                    end
            elseif state == "door_control" then
                    drawDoors() -- draws the contents of the 'lights'
                    local event, button, X, Y = os.pullEvent("mouse_click") -- waits for a mouse click
                    if button == 1 then
                            for i = 1, #tDoorControl do
                                    if X >= 2 and X <= #(tDoorControl[i]) + 2 and Y == 1 + (i * 2) then
                                            if i == 1 then
                                                    doorsState = "open"
                                            elseif i == 2 then
                                                    doorsState = "closed"
                                            elseif i == 3 then
                                                    state = "programs"
                                            end
                                    end
                            end
                    end
            elseif state == "lights" then
                    drawLights() -- draws the contents of the 'lights'
                    local event, button, X, Y = os.pullEvent("mouse_click") -- waits for a mouse click
                    if button == 1 then
                            for i = 1, #tLightsControl do
                                    if X >= 2 and X <= #(tLightsControl[i]) + 2 and Y == 1 + (i * 2) then
                                            if i == 1 then
                                                    lightsState = "on"
                                            elseif i == 2 then
                                                    lightsState = "off"
                                            elseif i == 3 then
                                                    state = "programs"
                                            end
                                    end
                            end
                    end
            elseif state == "info" then
                    drawInfo()
                    local event, button, X, Y = os.pullEvent("mouse_click") -- waits for a mouse click
                    if button == 1 then
                            for i = 1, #tInfoOptions do
                                    if X >= 2 and X <= #(tMainOptions[i]) + 2 and Y == 1 + (i * 2) then
                                            if i == 1 then
                                                    state = "credits"
                                            elseif i == 2 then
                                                    state = "main"
                                            end
                                    end
                            end
                    end
            elseif state == "credits" then
                    drawCredits() -- draw the credits
                    sleep(2) -- wait 2 seconds
                    state = "main" -- return to the main menu
            elseif state == "exit" then
                    running = false
            end

        if lightsState == "on" then
                rs.setBundledOutput("back",colors.combine(rs.getBundledOutput("back"), colors.yellow))
        elseif lightsState == "off" then
                rs.setBundledOutput("back",colors.subtract(rs.getBundledOutput("back"), colors.yellow))
        end

        if doorsState == "open" then
            rs.setBundledOutput("back",colors.combine(rs.getBundledOutput("back"), colors.blue))
        elseif doorsState == "closed" then
            rs.setBundledOutput("back",colors.subtract(rs.getBundledOutput("back"), colors.blue))
        end


    end

    -- Clean up
    term.clear()
    term.setCursorPos(1,1)