Player Detector

os.loadAPI("ocs/apis/sensor")
player = sensor.wrap("back")

local offset = {
        X = 0,
        Y = 2,
        Z = 2
}

print("set offsets...")
local radius = 4
print("set radius...")

function distance(pos)
        local xd = pos.X - offset.X
        local yd = pos.Y - offset.Y
        local zd = pos.Z - offset.Z
        return math.sqrt(xd*xd + yd*yd + zd*zd)
end

print("registered function...")

while true do
        sleep(0.1)
        print("loop check")
        local signal = false
        print("entering for loop...")
        for k,v in pairs(player.getTargets()) do
                if distance(v.Position) < radius then
                        signal = true
                end
        end
        print("loop check 2")
        rs.setOutput("top", not signal)
        rs.setOutput("left", not signal)
end
print("looped")