-- Proximity door by Immington Industries (snirkimmington)
-- Requires OpenPeripheral Sensor block attached to computer.
-- For a door that opens when you sneek, see http://pastebin.com/Qwhb3c2e
-- R.S. signal will output when you approach the door.
-- Adjust the peripheral wrapping and min/max values.
-- Can be set to enable/disable R.S. on detection.
local sensor = peripheral.wrap('left') -- where the sensor is
local output = 'right' -- Where to output the signal
local initial = true -- What to output when no one's around
-- How close you need to be to the sensor in order to use it.
local minX = -2 local maxX = 2
local minY = 0  local maxY = 2
local minZ = -2 local maxZ = 2
-- Initial output
redstone.setOutput(output, initial)
while true do
	players = sensor.getPlayerNames()
	-- Don't do checks if there are no players.
	if #players == 0 then
		redstone.setOutput(output, initial)
		sleep(0.7)
	else -- There are players
		for _, name in pairs(players) do
			-- You can replace this with "if name == 'yourname'" to check for you
			-- For example, if name == 'snirkimmington' on my door.
			if name ~= '' then
				info = sensor.getPlayerData(name)
				pos = info.position
				
				if pos.x >= minX and pos.x <= maxX
				and pos.y >= minY and pos.y <= maxY
				and pos.z >= minZ and pos.z <= maxZ then
					redstone.setOutput(output, not initial)
					break
				end
			end
		end
		-- There are players around, we need to be more responsive
		sleep(0.5)
	end
end