maze robit

rednet.open("back")
if fs.exists("id") then
 file = fs.open("id", "r")
 robitid = tonumber(file.readLine())
 file.close()
else
 robitid =  1
end

side = 2

term.clear()
x = 13
y = 18

while true do
 local event, character = os.pullEvent("char")
 if character == "w" then
  rednet.broadcast("forward",robitid)
  senderIdf, messagef, protocolf = rednet.receive(2)
  if messagef == "true" then
   if side == 0 then
     paintutils.drawPixel(x,y,colors.orange)
     y = y+1
     paintutils.drawPixel(x,y,colors.green)
   elseif side == 1 then
     paintutils.drawPixel(x,y,colors.orange)
     x = x-1
     paintutils.drawPixel(x,y,colors.green)
   elseif side == 2 then
     paintutils.drawPixel(x,y,colors.orange)
     y = y-1
     paintutils.drawPixel(x,y,colors.green)
   elseif side == 3 then
     paintutils.drawPixel(x,y,colors.orange)
     x = x+1
     paintutils.drawPixel(x,y,colors.green)
   end
  else
    if side == 0 then
     paintutils.drawPixel(x,y+1,colors.red)
   elseif side == 1 then
     paintutils.drawPixel(x-1,y,colors.red)
   elseif side == 2 then
     paintutils.drawPixel(x,y-1,colors.red)
   elseif side == 3 then
     paintutils.drawPixel(x+1,y,colors.red)
   end
  end
 end
 if character == "a" then
 rednet.broadcast("left",robitid)
 side = side - 1
 if side < 0 then
    side = 3
 end
 if side == 0 then
     term.setCursorPos(1,1)
     term.write(' v')
   elseif side == 1 then
     term.setCursorPos(1,1)
     term.write("<-")
   elseif side == 2 then
     term.setCursorPos(1,1)
     term.write(' ^')
   elseif side == 3 then
     term.setCursorPos(1,1)
     term.write("->")
   end
 end
 if character == "d" then
 rednet.broadcast("right",robitid)
 side = side + 1
 if side > 3 then
    side = 0
 end
 if side == 0 then
     term.setCursorPos(1,1)
     term.write(' v')
   elseif side == 1 then
     term.setCursorPos(1,1)
     term.write("<-")
   elseif side == 2 then
     term.setCursorPos(1,1)
     term.write(' ^')
   elseif side == 3 then
     term.setCursorPos(1,1)
     term.write("->")
   end
 end
 if character == "q" then
 rednet.broadcast("up",robitid)
 end
 if character == "e" then
 rednet.broadcast("down",robitid)
 end
 if character == "r" then
 rednet.broadcast("dig",robitid)
 end
 if character == "p" then
 rednet.broadcast("place",robitid)
 end
 if character == "f" then
 rednet.broadcast("fight",robitid)
 end
 if character == "u" then
 rednet.broadcast("placeu",robitid)
 end
 if character == "j" then
 rednet.broadcast("placed",robitid)
 end
 if character == "c" then
 rednet.broadcast("mineu",robitid)
 end
 if character == "z" then
 rednet.broadcast("mined",robitid)
 end
 if character == "x" then
 rednet.broadcast("close",robitid)
 end
 if character == "i" then
    term.clear()
    term.setCursorPos(1,1)
    term.write("robit id:")
    robitid = read()
    file = fs.open("id", "w")
    file.writeLine(robitid)
    file.close()
  end
end