скринсейвер SpaceX [OpenComputers]

--https://github.com/IgorTimofeev/OpenComputers-1/tree/master/SpaceX
--https://i.imgur.com/2VikNSK.gif

local component = require("component")
local event = require("event")
local gpu = component.gpu
local w, h = gpu.getResolution()
local depth = gpu.getDepth()

local starAmount = 100;
local braille = {"⠁", "⠈", "⠂", "⠐", "⠄", "⠠", "⡀", "⢀", "⠛", "⣤"}

local stars = {}
local i, rotationAngle, targetX, targetY, startWay, x, y, xmod, ymod, prevX, prevY, color

local function clearScreen()
  gpu.setBackground(0x000000)
  gpu.setForeground(0xFFFFFF)
  gpu.fill(1, 1, w, h, " ")
end

clearScreen()
while true do
  while #stars < starAmount do
    rotationAngle = math.random(6265) / 1000
    targetX = math.ceil(math.cos(rotationAngle) * w * 0.75 + w / 2)
    targetY = math.ceil(math.sin(rotationAngle) * w * 0.375 + h / 2)
    startWay = math.random()
    table.insert(stars, {
      targetX = targetX,
      targetY = targetY,
      startX = math.ceil((targetX - w / 2) * startWay + w / 2),
      startY = math.ceil((targetY - h / 2) * startWay + h / 2),
      prevX = -1,
      prevY = -1,
      way = 0.01,
      speed = math.random(25, 75) / 1000 + 1,
    })
  end
  i = 1
  while i <= #stars do
    x = (stars[i].targetX - stars[i].startX) * stars[i].way + stars[i].startX
    y = (stars[i].targetY - stars[i].startY) * stars[i].way + stars[i].startY
    xmod = math.floor(x * 2) % 2
    ymod = math.floor(y * 4) % 4
    x = math.floor(x)
    y = math.floor(y)
    if x > w or x <= 0 or y > h or y <= 0 then
      gpu.set(stars[i].prevX, stars[i].prevY, " ")
      table.remove(stars, i)
    else
      prevX = stars[i].prevX
      prevY = stars[i].prevY
      color = math.floor(stars[i].way * 1024)
      if depth == 4 then
        if color > 63 then
          color = 255
        end
      else
        if color > 255 then
          color = 255
        end
      end
      gpu.setForeground(math.floor(color + color * 0x100 + color * 0x10000), false)
      if prevX ~= x or prevY ~= y then
        gpu.set(prevX, prevY, " ")
      end
      stars[i].prevX = x
      stars[i].prevY = y
      stars[i].way = stars[i].way * stars[i].speed
      if gpu.get(x, y) == " " then
        if stars[i].way < 0.3 then
           if xmod == 0 and ymod == 0 then gpu.set(x, y, braille[1])
           elseif xmod == 1 and ymod == 0 then gpu.set(x, y, braille[2])
           elseif xmod == 0 and ymod == 1 then gpu.set(x, y, braille[3])
           elseif xmod == 1 and ymod == 1 then gpu.set(x, y, braille[4])
           elseif xmod == 0 and ymod == 2 then gpu.set(x, y, braille[5])
           elseif xmod == 1 and ymod == 2 then gpu.set(x, y, braille[6])
           elseif xmod == 0 and ymod == 3 then gpu.set(x, y, braille[7])
           elseif xmod == 1 and ymod == 3 then gpu.set(x, y, braille[8])
           end
        else
          if ymod < 2 then
            gpu.set(x, y, braille[9])
          else
            gpu.set(x, y, braille[10])
          end
        end
      end
      i = i + 1
    end
  end
  local eventType, _, _, _ = event.pull(0)
  if eventType == "touch" or eventType == "key_down" then
    clearScreen()
    break
  end
end