-- CONFIGURATION
local detector = peripheral.wrap("bottom") -- adjust as needed
local outputSide = "back"

-- Whitelist of allowed usernames
local whitelist = {
    ["CottonLeSergal"] = true,
    ["CartUniverse"] = true
}

-- Bounding box coordinates (inclusive)
local minX, maxX = -26, -24
local minY, maxY = 77, 77
local minZ, maxZ = 24, 27

-- Delay between checks (in seconds)
local delay = .1

-- Helper: Check if position is inside bounding box
local function isInBounds(pos)
    if not pos or not pos.x or not pos.y or not pos.z then
        return false
    end
    return pos.x >= minX and pos.x <= maxX
       and pos.y >= minY and pos.y <= maxY
       and pos.z >= minZ and pos.z <= maxZ
end

-- Helper: Check if any whitelisted player is in range & within bounds
local function validPlayerNearby()
    local players = detector.getOnlinePlayers()
    for _, name in ipairs(players) do
        if whitelist[name] then
            local pos = detector.getPlayerPos(name)
            if isInBounds(pos) then
                return true
            end
        end
    end
    return false
end

-- Main Loop
while true do
    if validPlayerNearby() then
        redstone.setOutput(outputSide, true)
        sleep(5) -- pulse duration
    else
        redstone.setOutput(outputSide, false)
        sleep(delay)
    end
end