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

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

-- Main program loop.
while true do
  -- Connect to the player detector on the "right" side.
  local playerDetector = peripheral.wrap("right")

  -- Check if the player detector was successfully found.
  if not playerDetector then
    print("Error: Player detector not found on the 'right' side.")
    print("Please ensure the block is correctly placed.")
    sleep(5)
    goto continueLoop
  end

  -- Get a list of all players within the specified range.
  local players = playerDetector.getPlayersInRange(detectionRadius)

  -- Clear the screen and print the players table for debugging.
  term.clear()
  term.setCursorPos(1,1)
  print(players)
  sleep(2)

  local playerFound = false
  -- Loop through the list of players to check for our target.
  for _, player in ipairs(players) do
    if player and player.name == targetPlayer then
      playerFound = true
      break -- Stop the loop as soon as the player is found.
    end
  end

  -- Set the redstone signal based on whether the player was found.
  if playerFound then
    rs.setOutput("back", true)
    print("Player '" .. targetPlayer .. "' detected. Redstone ON.")
  else
    rs.setOutput("back", false)
    print("Player '" .. targetPlayer .. "' not detected. Redstone OFF.")
  end

  -- Wait for a short time before checking again to avoid performance issues.
  sleep(0.5)

  ::continueLoop::
end