ComputerCraft Pictionary Server

-- Server program (run on one ComputerCraft computer)

local drawingData = {}  -- Table to store drawing data
local timerDuration = 60  -- Duration of the timer in seconds
local isDrawing = false
local clients = {}  -- Table to store client IDs

-- Function to broadcast drawing data to all clients
function broadcastDrawing()
    for _, id in ipairs(clients) do
        rednet.send(id, "DRAWING " .. textutils.serialize(drawingData))
    end
end

-- Function to broadcast timer updates
function broadcastTimer(timeLeft)
    for _, id in ipairs(clients) do
        rednet.send(id, "TIMER " .. timeLeft)
    end
end

-- Function to handle incoming messages from clients
function handleClientMessages()
    while true do
        local senderId, message = rednet.receive()
        if message == "JOIN" then
            table.insert(clients, senderId)
        elseif message:find("DRAW") then
            -- Update drawing data and broadcast
            drawingData = textutils.unserialize(message:sub(6))
            broadcastDrawing()
        elseif message:find("TIMER") then
            -- Update the timer display for all clients
            local timeLeft = message:sub(7)
            broadcastTimer(timeLeft)
        end
    end
end

-- Main function to start the game
function startGame()
    rednet.open("top")
    -- Set initial drawing data
    drawingData = {}
    isDrawing = true

    -- Start timer
    local startTime = os.time()
    local endTime = startTime + timerDuration

    while isDrawing do
        local currentTime = os.time()
        local timeLeft = math.max(0, endTime - currentTime)

        -- Broadcast timer update
        broadcastTimer(timeLeft)

        if timeLeft <= 0 then
            isDrawing = false
            broadcastTimer("Time's up!")
            break
        end

        -- Sleep for 1 second before next update
        os.sleep(1)
    end

    handleClientMessages()
end

startGame()