doorProx

-- This program detects a player named "s3ptum" within a 6-block radius
-- using an Advanced Peripherals Player Detector and sends a redstone signal
-- to the back of the computer if the player is present.

-- Define the player's name and the detection radius
local targetPlayer = "s3ptum"
local detectionRadius = 6

-- Main program loop
while true do
  -- Use peripheral.wrap() to connect to the player detector on a specific side.
  -- The detector is now explicitly set to the "right" side.
  local playerDetector = peripheral.wrap("right")

  -- Check if a peripheral was found AND if it has the required method.
  if playerDetector and playerDetector.getPlayersInRange then
    -- If the detector is found and valid, proceed with the main logic.
    local players = playerDetector.getPlayersInRange(detectionRadius)

    local playerFound = false
    -- Iterate through the list of detected players.
    for _, player in pairs(players) do
      -- Check if the current player's name matches our target.
      if player.name == targetPlayer then
        playerFound = true
        break -- Exit the loop once the player is found
      end
    end

    -- Based on whether the player was found, set the redstone signal.
    if playerFound then
      -- Send a redstone signal to the back of the computer.
      rs.setOutput("back", true)
      print("Player '" .. targetPlayer .. "' detected. Redstone ON.")
    else
      -- Turn off the redstone signal.
      rs.setOutput("back", false)
      print("Player '" .. targetPlayer .. "' not detected. Redstone OFF.")
    end

    -- Wait for a short duration before checking again to prevent
    -- excessive CPU usage.
    sleep(0.5)
  else
    -- If the detector is not found or is the wrong type, print an error and
    -- a list of available peripherals to help with debugging.
    print("Could not find a valid player detector.")
    print("Please check that the correct block is connected to the 'right' side.")
    print("Available peripherals:")
    for _, p in pairs(peripheral.getNames()) do
      print("- " .. p)
    end
    print("Trying again in 5 seconds.")
    sleep(5)
  end
end