ComputerCraft Pong Client

local modem = peripheral.wrap("right")
modem.open(1)

local serverId = 6660 -- Replace with your server ID
local playerId = 1 -- Replace with 1 or 2 depending on the player
local paddleHeight = 5 -- Height of the paddle
local paddleWidth = 1 -- Width of the paddle

-- Initialize paddle position
local paddleY = 20

-- Function to clear the terminal screen
local function clearScreen()
    term.clear()
    term.setCursorPos(1, 1)
end

-- Function to render the game
local function render(ballX, ballY, p1Y, p2Y, p1Score, p2Score)
    clearScreen()

    -- Render paddles
    for i = 0, paddleHeight - 1 do
        term.setCursorPos(2, p1Y + i)
        term.write("▓")
        term.setCursorPos(78, p2Y + i)
        term.write("▓")
    end

    -- Render ball
    term.setCursorPos(ballX, ballY)
    term.write("●")

    -- Render scores
    term.setCursorPos(5, 1)
    term.write("Player 1 Score: " .. p1Score)
    term.setCursorPos(65, 1)
    term.write("Player 2 Score: " .. p2Score)
end

-- Send initial presence message
modem.transmit(1, serverId, textutils.serialize({action = "join", player = playerId}))

while true do
    -- Handle user input
    local event, key = os.pullEvent("key")

    if key == keys.w then
        paddleY = math.max(1, paddleY - 1)
    elseif key == keys.s then
        paddleY = math.min(38 - paddleHeight + 1, paddleY + 1)
    end

    -- Send paddle movement
    modem.transmit(1, serverId, textutils.serialize({action = "move", player = playerId, y = paddleY}))

    -- Receive game state updates
    local event, side, senderId, message, distance = os.pullEvent("modem_message")

    if senderId == serverId then
        local data = textutils.unserialize(message)
        if data then
            -- Debugging output
            print("Received data: " .. message)

            -- Update the game state
            render(data.ball.x, data.ball.y, data.paddle1, data.paddle2, data.score1, data.score2)
        else
            print("Error: Data received is nil or not unserializable.")
        end
    end

    -- Sleep to control update frequency
    sleep(0.05)
end