testmap

rednet.open("front")
m = peripheral.wrap("right")
width, height = m.getSize()

pcX = 1
pcY = 1 -- to get the Screens relative position to the turtles, useful to get an idea of how far appart they are.
pcZ = 1



exists = 0

turtles = {}
turtles[#turtles+1] = {}
turtles[#turtles][1] = os.getComputerID()
turtles[#turtles][2] = pcX
turtles[#turtles][3] = pcY
turtles[#turtles][4] = pcZ
smallX = 0
smallZ = 0
bigX = 1
bigZ = 1
totx = 1
totz = 1
xpp  = 1
zpp = 1
while true do
  event,id,msg,distance = os.pullEvent("rednet_message")

  for i = 1, #turtles do
    if id == turtles[i][1] then
      exists = 1
    end
  end
 if exists == 0 then
   turtles[#turtles+1] = {}
   turtles[#turtles][1] = id
   turtles[#turtles][2] = 1                 -- if the turtle doesnt exist in the system it adds it to it.
   turtles[#turtles][3] = 1
   turtles[#turtles][4] = 1
 end

  for i = 1, #turtles do
    exists = 0
      if turtles[i][1] == id then
        if string.sub(msg,1,1) == "x" then
          turtles[i][2] = tonumber(string.sub(msg,2))
        end
        if string.sub(msg,1,1) == "y" then
          turtles[i][3] = tonumber(string.sub(msg,2))          --updates the correct coordinate when a message is recieved
        end
        if string.sub(msg,1,1) == "z" then
          turtles[i][4] = tonumber(string.sub(msg,2))
        end
    end

 end

tempz = {}
tempx = {}
for i = 1, #turtles do
  table.insert(tempx, turtles[i][2])
  table.insert(tempz, turtles[i][4])
end

table.sort(tempx)
table.sort(tempz)
smallX = tempx[1]
bigX = tempx[#tempx]
smallZ = tempz[1]
bigZ = tempz[#tempz]

 if (bigX - smallX)/width >  1 then
   xpp = (bigX - smallX)/width
 else
   xpp = 1
 end
if (bigZ - smallZ)/height > 1 then
  zpp = (bigZ - smallZ)/height
else
  zpp = 1
end





--print(smallX,bigX, smallZ, bigZ)





m.setBackgroundColor(colors.black)
m.clear()
m.setBackgroundColor(colors.red)
--for i = 1, #turtles do
--  for i = 1, #turtles do
    for i = 1, #turtles do

      xt = 1
      zt = 1
      if (math.abs(smallX)+turtles[i][2]) / xpp < 1 then
        xt = 1
      elseif (math.abs(smallX)+turtles[i][2]) / xpp > width then
        xt = width
      else
        xt = (math.abs(smallX)+turtles[i][2]) / xpp
      end

      if (math.abs(smallZ)+turtles[i][4]) / zpp < 1 then
        zt = 1
      elseif (math.abs(smallX)+turtles[i][4]) / zpp > height then
        zt = height
      else
        zt = (math.abs(smallX)+turtles[i][4]) / zpp
      end






      m.setCursorPos(xt,zt)--(math.abs(smallZ)+turtles[i][4]) / zpp)
      print(math.abs(smallX)+turtles[i][2] , xpp)
      m.write(" ")
    end
print("                ")
  --end
--end






end