shell.run("clear")
  term.setBackgroundColor(colors.gray)
  term.setTextColor(colors.white)
  term.clear()
  term.setCursorPos(1,4)
print("          _/    _/  _/_/_/_/    _/_/_/  _/_/_/    ")
print("         _/    _/  _/        _/        _/    _/   ")
print("        _/_/_/_/  _/_/_/    _/  _/_/  _/_/_/      ")
print("       _/    _/  _/        _/    _/  _/    _/     ")
print("      _/    _/  _/          _/_/_/  _/    _/      ")
term.setTextColor( colors.red )
print("      By InfiniteBlock.")
term.setTextColor( colors.white )
sleep(4)

-- the webhook url for the requests
local discordUri = "https://discordapp.com/api/webhooks/9897675164221440/bVNkDOVeMt0XruW3UBpLOys6ycH-E1ML9SoWwGrFXaTL_vFtpYxjj27quln6actJSEOr"

-- waittime between radar scans
local intervalSec = 15
-- range in blocks
local radarRadius = 1000
-- if something is closer than that then a warning sign will be prepended in discord
local safetyDist = 400

local radar = peripheral.find("warpdriveRadar")
if radar == nil then
  error("No radar could be found!")
end

function tableHasValue(table, v)
  for i=1,#table do
    if table[i] == v then
      return true
    end
  end
  return false
end

function getDst(x1,x2,y1,y2,z1,z2)
  local dx = x1-x2
  local dy = y1-y2
  local dz = z1-z2
  return math.floor(math.sqrt(dx*dx+dy*dy+dz*dz))
end

function getRadarResults()

  local dur = radar.getScanDuration(radarRadius)
  local first = true
  while true do
    local currPwr, maxPwr, unit = radar.getEnergyStatus()
    local _,reqPwr = radar.getEnergyRequired(radarRadius)
    if reqPwr <= currPwr then
      break
    else
      if first then
        first = false
      else
        local _,line=term.getCursorPos()
        term.setCursorPos(1,line-1)
        term.clearLine()
      end
      print("Waiting for energy.. ("..currPwr.."/"..reqPwr..")")

      os.sleep(1)
    end
  end
  print("Scanning in the radius of "..radarRadius.." blocks. This will take "..tonumber(dur).."s.")

  radar.start()
  os.sleep(dur + 0.1) -- sleep for duration plus buffer
  radar.getResultsCount()
  local cnt = radar.getResultsCount()
  local ret = {}
  local dsts = {}
  local alreadySeen = {}
  local rPosOK,dim,rPosX,rPosY,rPosZ = radar.getGlobalPosition()
  for i=1,cnt do
    local result={radar.getResult(i-1)}
    -- identifier:
    local tv = result[2]..":"..result[3]..":"..result[4].."-"..result[5].."-"..result[6]..":"..result[7]
    if result[1] == true then -- [1] = successful or not
      table.insert(ret,result)

      --            alreadySeen[#alreadySeen+1]=tv
    end
  end
  table.sort(ret, function(a,b) return getDst(rPosX,a[4],rPosY,a[5],rPosZ,a[6]) < getDst(rPosX,b[4],rPosY,b[5],rPosZ,b[6]) end)
  return ret
end -- func

local oldShips = {}
local goodChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"--,;:_-#'+~*?!§$%&/()={[]}^|<>"
radar.radius(radarRadius)
radar.enable()
while true do
  local res = getRadarResults()

  shell.run("clear")
  print("==== Ship Scanner ====")

  local str = ""
  local newShips = {}

  local firstMsgPart = true
  --    print("Currently tracked ships:")
  local rPosOK,dim,rPosX,rPosY,rPosZ = radar.getGlobalPosition()
  local rlPosX,rlPosY,rlPosZ = radar.getLocalPosition()
  print("Our pos: global xyz: ("..rPosX.." "..rPosY.." "..rPosZ..") local xyz: ("..rlPosX.." "..rlPosY.." "..rlPosZ..")")
  --    rlPosX = 0
  --    rlPosY = 0
  --    rlPosZ = 0

  --print("ress:"..#res)
  os.sleep(1)
  for
  i=1,#res do
    local success, type, name, x, y, z, mass = table.unpack(res[i])
    if name ~= "" then
      local cdist = getDst(rPosX,x,rPosY,y,rPosZ,z)
      local so = ""
      if cdist < safetyDist then so = so .. " :warning: " end

      so = so.. "**"..name.."** ["..type..", "..mass.."t] at Hyper XYZ: "..x.." "..y.." "..z.." Local XYZ: "

      so = so..(x-rPosX+rlPosX).." "..(y-rPosY+rlPosY).." "..(z-rPosZ+rlPosZ).. " **Distance: "..cdist.."m**."
      table.insert(newShips,so)
      --print("added element "..#newShips)
      --os.sleep(1)
      if not tableHasValue(oldShips, so) then -- not already tracked
        if firstMsgPart then
          str = str.."**Newly tracked ships:**"
          firstMsgPart = false
        end
        str = str.."\n"..so
      end
      print(so)
      --os.sleep(.5)
      --
    end
  end


  firstMsgPart = true
  for i=1,#oldShips do
    if not tableHasValue(newShips, oldShips[i]) then -- if a ship was removed
      if firstMsgPart then
        str = str.."Lost contact with ships:\n"
        firstMsgPart = false
      end
      str = str..oldShips[i].."\n"
    end
  end
  print("\n\n")
  --print("l3:"..#newShips)
  if str ~= "" then
    str = "-------------------------------\n"..str
    --print("posting update to discord...")
    local sanitized = ""
    for j=1,str:len() do
      if string.find(str:sub(j,j), "\"") or str:sub(j,j):find("\\") then
        sanitized = sanitized .. "."
        --     print("removed "..str:sub(j,j))
      else
        sanitized = sanitized .. string.sub(str,j,j)
      end
    end
    print(sanitized)
    if sanitized:len() > 1950 then
      sanitized = sanitized:sub(1,1951).."[..]"
    end
    http.post(discordUri, "{\"content\":\""..sanitized:gsub("\n","\\n").."\"}",{['content-type']="application/json"})
  end
  oldShips = newShips
  sleep(intervalSec)
end