Simple Screensaver

-- Simple screensaver by Laine_prikol
local component = require("component")
local gpu = component.gpu
local os = require("os")
local term = require("term")
input = "None"
-----------------------------
term.clear()
print("Введите режим: [a] - Полный рандом [b] - Красный [c] - Синий [d] - Зелёный")
while true do
input = io.read()
    if input == "a" then
    term.clear()
        while true do
        os.sleep(0)
        local x = math.random(0, 160)
        local y = math.random(0, 80)
        local x1 = x + math.random(0,10)
        local y1 = y + math.random(1,5)
        local x2 = x + math.random(1,8)
        local y2 = y + math.random(2,5)
        gpu.set(x,y, "█")
        gpu.setForeground(0x0000FF)
        gpu.set(x1,y1, "▓")
        gpu.setForeground(0x008000)
        gpu.set(x2,y2, "░")
        gpu.set(x2+4,y2+5, " ")
        gpu.setForeground(0x008000)
        gpu.set(x2+2,y2+1, "█")
        gpu.setForeground(0xF00000)
        end
    end
    if input == "b" then
    term.clear()
        while true do
        os.sleep(0)
        local x = math.random(0, 160)
        local y = math.random(0, 80)
        local x1 = x + math.random(0,10)
        local y1 = y + math.random(1,5)
        local x2 = x + math.random(1,8)
        local y2 = y + math.random(2,5)
        gpu.set(x,y, "█")
        gpu.setForeground(0xff0000)
        gpu.set(x1,y1, "█")
        gpu.setForeground(0xff1a1a)
        gpu.set(x2,y2, "█")
        gpu.set(x2+4,y2+5, " ")
        gpu.setForeground(0xe60000)
        gpu.set(x2+2,y2+1, "█")
        gpu.setForeground(0xff8080)
        end
    end
    if input == "c" then
    term.clear()
        while true do
        os.sleep(0)
        local x = math.random(0, 160)
        local y = math.random(0, 80)
        local x1 = x + math.random(0,10)
        local y1 = y + math.random(1,5)
        local x2 = x + math.random(1,8)
        local y2 = y + math.random(2,5)
        gpu.set(x,y, "█")
        gpu.setForeground(0x0033cc)
        gpu.set(x1,y1, "█")
        gpu.setForeground(0x4d79ff)
        gpu.set(x2,y2, "█")
        gpu.set(x2+4,y2+5, " ")
        gpu.setForeground(0x002080)
        gpu.set(x2+2,y2+1, "█")
        gpu.setForeground(0x002699)
        end
    end
    if input == "d" then
        while true do
        os.sleep(0)
        local x = math.random(0, 160)
        local y = math.random(0, 80)
        local x1 = x + math.random(0,10)
        local y1 = y + math.random(1,5)
        local x2 = x + math.random(1,8)
        local y2 = y + math.random(2,5)
        gpu.set(x,y, "█")
        gpu.setForeground(0x33cc33)
        gpu.set(x1,y1, "█")
        gpu.setForeground(0x196619)
        gpu.set(x2,y2, "█")
        gpu.set(x2+4,y2+5, " ")
        gpu.setForeground(0xadebad)
        gpu.set(x2+2,y2+1, "█")
        gpu.setForeground(0x47d147)
     end
     end
end