local gpu = require("component").gpu
local thread = require("thread")
local term = require("term")

term.clear()
local maxx, maxy = gpu.getResolution()
local table = {"▖", "▌", "▛","█", n=4}

local function change(x, y, table)
  place = 0
  for place = 1, table.n do
    gpu.set(x, y, table[place])
    os.sleep(0.2)
  end
end

t = {}
tablept = 1

for x = 1, maxx do
  for y = 1, maxy do
    t[tablept] = thread.create(function(x, y, table)
      change(x, y, table)
    end, x, y, table)
    os.sleep(0.001)
    tablept = tablept+1
  end
end

thread.waitForAll(t)