Radar.lua

local SensorSide = "left"
local badNPC = {"Zombie","Enderman","Skeleton","Creeper","Spider"}
local goodNPC = {"Pig","Cow","Chicken","SnowGolem"}
local trusted = {"gfcwfzkm","Zachecho"}

os.loadAPI("ocs/apis/sensor") --Load Sensor API
local prox = sensor.wrap(SensorSide) --Sensor Side
local targets = prox.getTargets() --Find People/NPCs


function CheckMob( Str )
  for ii,xx in pairs(badNPC) do
    if string.match(Str,ii) == true then
      term.setTextColor(colors.blue)
      return true
    end
  end
  for ii,xx in pairs(goodNPC) do
    if string.match(Str,ii) == true then
      term.setTextColor(colors.lightBlue)
      return true
    end
  end
  for ii,xx in pairs(trusted) do
    if string.match(Str,ii) == true then
      term.setTextColor(colors.green)
      return true
    end
  end
end

for name, basicDetails in pairs(targets) do
  CheckMob( name )
  print("Found entity: "..name)
  term.setTextColor(colors.white)
  local moreDetails = prox.getTargetDetails(name)
  print("Health: "..moreDetails.Health)
end