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shell.run("clear")
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print("ooooo   ooooo oooooooooooo   .oooooo.    ooooooooo.   ")
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print("    _/    _/  _/_/_/_/    _/_/_/  _/_/_/    ")
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print("`888'   `888' `888'     `8  d8P'  `Y8b   `888   `Y88. ")
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print("   _/    _/  _/        _/        _/    _/")
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print(" 888     888   888         888            888   .d88' ")
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print("  _/_/_/_/  _/_/_/    _/  _/_/  _/_/_/     ")
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print(" 888ooooo888   888oooo8    888            888ooo88P'  ")
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print(" _/    _/  _/        _/    _/  _/    _/     ")
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print(" 888     888   888    "    888     ooooo  888`88b.    ")
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print("_/    _/  _/          _/_/_/  _/    _/      ")
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print(" 888     888   888         `88.    .88'   888  `88b.  ")
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print("o888o   o888o o888o         `Y8bood8P'   o888o  o888o ")
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-- the webhook url for the requests
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local discordUri = "https://discordapp.com/api/webhooks/9897675164221440/bVNkDOVeMt0XruW3UBpLOys6ycH-E1ML9SoWwGrFXaTL_vFtpYxjj27quln6actJSEOr"
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-- waittime between radar scans
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local intervalSec = 15
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-- range in blocks
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local radarRadius = 1000
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-- if something is closer than that then a warning sign will be prepended in discord
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local safetyDist = 400
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local radar = peripheral.find("warpdriveRadar")
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if radar == nil then
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  error("No radar could be found!")
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end
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function tableHasValue(table, v)
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  for i=1,#table do
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    if table[i] == v then
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      return true
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    end
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  end
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  return false
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end
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function getDst(x1,x2,y1,y2,z1,z2)
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  local dx = x1-x2
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  local dy = y1-y2
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  local dz = z1-z2
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  return math.floor(math.sqrt(dx*dx+dy*dy+dz*dz))
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end
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function getRadarResults()
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  local dur = radar.getScanDuration(radarRadius)
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  local first = true
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  while true do
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    local currPwr, maxPwr, unit = radar.getEnergyStatus()
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    local _,reqPwr = radar.getEnergyRequired(radarRadius)
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    if reqPwr <= currPwr then
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      break
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    else
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      if first then
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        first = false
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      else
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        local _,line=term.getCursorPos()
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        term.setCursorPos(1,line-1)
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        term.clearLine()
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      end
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      print("Waiting for energy.. ("..currPwr.."/"..reqPwr..")")
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      os.sleep(1)
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    end
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  end
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  print("Scanning in the radius of "..radarRadius.." blocks. This will take "..tonumber(dur).."s.")
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  radar.start()
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  os.sleep(dur + 0.1) -- sleep for duration plus buffer
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  radar.getResultsCount()
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  local cnt = radar.getResultsCount()
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  local ret = {}
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  local dsts = {}
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  local alreadySeen = {}
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  local rPosOK,dim,rPosX,rPosY,rPosZ = radar.getGlobalPosition()
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  for i=1,cnt do
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    local result={radar.getResult(i-1)}
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    -- identifier:
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    local tv = result[2]..":"..result[3]..":"..result[4].."-"..result[5].."-"..result[6]..":"..result[7]
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    if result[1] == true then -- [1] = successful or not
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      table.insert(ret,result)
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      --            alreadySeen[#alreadySeen+1]=tv
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    end
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  end
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  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)
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  return ret
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end -- func
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local oldShips = {}
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local goodChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"--,;:_-#'+~*?!ยง$%&/()={[]}^|<>"
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radar.radius(radarRadius)
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radar.enable()
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while true do
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  local res = getRadarResults()
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  shell.run("clear")
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  print("==== Ship Scanner ====")
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  local str = ""
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  local newShips = {}
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  local firstMsgPart = true
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  --    print("Currently tracked ships:")
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  local rPosOK,dim,rPosX,rPosY,rPosZ = radar.getGlobalPosition()
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  local rlPosX,rlPosY,rlPosZ = radar.getLocalPosition()
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  print("Our pos: global xyz: ("..rPosX.." "..rPosY.." "..rPosZ..") local xyz: ("..rlPosX.." "..rlPosY.." "..rlPosZ..")")
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  --    rlPosX = 0
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  --    rlPosY = 0
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  --    rlPosZ = 0
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  --print("ress:"..#res)
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  os.sleep(1)
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  for
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  i=1,#res do
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    local success, type, name, x, y, z, mass = table.unpack(res[i])
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    if name ~= "" then
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      local cdist = getDst(rPosX,x,rPosY,y,rPosZ,z)
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      local so = ""
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      if cdist < safetyDist then so = so .. " :warning: " end
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      so = so.. "**"..name.."** ["..type..", "..mass.."t] at Hyper XYZ: "..x.." "..y.." "..z.." Local XYZ: "
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      so = so..(x-rPosX+rlPosX).." "..(y-rPosY+rlPosY).." "..(z-rPosZ+rlPosZ).. " **Distance: "..cdist.."m**."
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      table.insert(newShips,so)
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      --print("added element "..#newShips)
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      --os.sleep(1)
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      if not tableHasValue(oldShips, so) then -- not already tracked
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        if firstMsgPart then
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          str = str.."**Newly tracked ships:**"
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          firstMsgPart = false
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        end
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        str = str.."\n"..so
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      end
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      print(so)
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      --os.sleep(.5)
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      --
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    end
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  end
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  firstMsgPart = true
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  for i=1,#oldShips do
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    if not tableHasValue(newShips, oldShips[i]) then -- if a ship was removed
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      if firstMsgPart then
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        str = str.."Lost contact with ships:\n"
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        firstMsgPart = false
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      end
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      str = str..oldShips[i].."\n"
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    end
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  end
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  print("\n\n")
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  --print("l3:"..#newShips)
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  if str ~= "" then
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    str = "-------------------------------\n"..str
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    --print("posting update to discord...")
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    local sanitized = ""
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    for j=1,str:len() do
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      if string.find(str:sub(j,j), "\"") or str:sub(j,j):find("\\") then
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        sanitized = sanitized .. "."
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        --     print("removed "..str:sub(j,j))
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      else
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        sanitized = sanitized .. string.sub(str,j,j)
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      end
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    end
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    print(sanitized)
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    if sanitized:len() > 1950 then
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      sanitized = sanitized:sub(1,1951).."[..]"
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    end
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    http.post(discordUri, "{\"content\":\""..sanitized:gsub("\n","\\n").."\"}",{['content-type']="application/json"})
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  end
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  oldShips = newShips
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  sleep(intervalSec)
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end