scan

local tArgs = {...}
if #tArgs ~= 1 and #tArgs ~= 4 then
    print("Usage: ")
    print("Scan <filter>")
    print("Scan <filter> [x] [y] [z]")
    error()
end

local gps_enabled = false
if gps and gps.locate and gps.locate() then
    gps_enabled = true
end

print("Scanning...")
p = peripheral.wrap("top")
tbl = p.scan(8)


for i,v in pairs(tbl) do
  if v.name:find(tArgs[1]) then
    if #tArgs == 4 then
        print(tArgs[2]+v.x, tArgs[3]+v.y, tArgs[4]+v.z)
    else
        if gps_enabled then
            local x,y,z = gps.locate()
            print(x+v.x, y+v.y, z+v.z)
        else
            print("Found")
        end
    end
  end

end