mds

radar = peripheral.wrap("right")
rednet.open("left")

m = {}

for i = 0,100 do
  m[i] = {}
end

launcherX = 761
launcherY = 107
launcherZ = -229

function radarTrack()

  loop = 0

  track = radar.getEntities()

  for name, pos in pairs(track) do
    if string.sub(name,0,1) == "x" then
      m[loop].x = pos
    elseif string.sub(name,0,1) == "y" then
      m[loop].y = pos
    else
      m[loop].z = pos
      loop = loop + 1
    end
  end
end

function distanceToMe(x,y,z)
  if x == nil then
  else
    vector1 = vector.new(x,y,z)
    vector2 = vector.new(launcherX,launcherY,launcherZ)
    vector3 = vector1 - vector2
    return vector3:length()
  end
end

function friendOrFoe()
  radarTrack()
  if loop > 0 then
    for i = 0,loop do
      m[i].dist = distanceToMe(m[i].x,m[i].y,m[i].z)
      print(m[i].dist)
    end
    sleep(0.5)
    print(loop)
    for i = 0,loop do
        m[i].dist2 = distanceToMe(m[i].x,m[i].y,m[i].z)
      if m[i].dist > m[i].dist2 then
        m[i].friend = false
      else
        m[i].friend = true
      end
    end
  end
end

function detect()
  track = radar.getEntities()
  if track == nil then
  else
    friendOrFoe()
  end
end

while true do
  detect()
end