ComputerCraft Billboard Program V3

-- Designed for an 8 wide by 5 tall advanced monitor
tSides = {"left","right","bottom","top","front","back"}

for i = 1, #tSides do
  monitor = peripheral.wrap(tSides[i])
  if monitor then
        side = tSides[i]
        break
  end
end
--Prevents program termination
os.pullEvent = os.pullEventRaw
local currentTerm = term.current()
--Redirects setup/install output to monitor (for artistic effect)
local monitor = peripheral.wrap(side)
if not fs.exists("boot") then
    term.setTextColor(colors.red)
    print("Warning: boot image missing!")
    print("Downloading image...")
    term.setTextColor(colors.white)
    shell.run("pastebin get edscQ8zU boot")
    term.setTextColor(colors.green)
    print("File downloaded")
    term.setTextColor(colors.white)
else
    term.setTextColor(colors.green)
    print("boot image found!")
    term.setTextColor(colors.white)
end
local img = paintutils.loadImage("boot")
term.redirect(monitor)
paintutils.drawImage(img, 1,1)
term.redirect(currentTerm)
term.setBackgroundColor(colors.blue)
term.setTextColor(colors.orange)
term.clear()
print("Rolcam's Billboard Program V3")
term.setTextColor(colors.white)
print(" ")
print("Beginning system check...")
--Checks for missing signs and labels itself
print("Checking signs...")
if not fs.exists("image") then
    term.setTextColor(colors.red)
    print("Warning: beach image missing!")
    term.setTextColor(colors.white)
    print("Downloading image...")
    shell.run("pastebin get EZDcTC35 image")
    term.setTextColor(colors.green)
    print("File downloaded")
    term.setTextColor(colors.white)
else
    term.setTextColor(colors.green)
    print("beach image found!")
    term.setTextColor(colors.white)
end
if not fs.exists("night") then
    term.setTextColor(colors.red)
    print("Warning: night image missing!")
    term.setTextColor(colors.white)
    print("Downloading image...")
    shell.run("pastebin get KizP2jiT night")
    term.setTextColor(colors.green)
    print("File downloaded")
    term.setTextColor(colors.white)
else
    term.setTextColor(colors.green)
    print("night image found!")
    term.setTextColor(colors.white)
end
if not fs.exists("moon") then
    term.setTextColor(colors.red)
    print("Warning: moon image missing!")
    term.setTextColor(colors.white)
    print("Downloading image...")
    shell.run("pastebin get LL7rSBmx moon")
    term.setTextColor(colors.green)
    print("File downloaded")
    term.setTextColor(colors.white)
else
    term.setTextColor(colors.green)
    print("moon image found!")
    term.setTextColor(colors.white)
end
if not fs.exists("village") then
    term.setTextColor(colors.red)
    print("Warning: village image missing!")
    term.setTextColor(colors.white)
    print("Downloading image...")
    shell.run("pastebin get ncJRFq5J village")
    term.setTextColor(colors.green)
    print("File downloaded")
    term.setTextColor(colors.white)
else
    term.setTextColor(colors.green)
    print("village image found!")
    term.setTextColor(colors.white)
end
if not fs.exists("mars") then
    term.setTextColor(colors.red)
    print("Warning: mars image missing!")
    term.setTextColor(colors.white)
    print("Downloading image...")
    shell.run("pastebin get Xh9Lnr1u mars")
    term.setTextColor(colors.green)
    print("File downloaded")
    term.setTextColor(colors.white)
else
    term.setTextColor(colors.green)
    print("mars image found!")
    term.setTextColor(colors.white)
end
if not fs.exists("bar") then
    term.setTextColor(colors.red)
    print("Warning: bar image missing!")
    term.setTextColor(colors.white)
    print("Downloading image...")
    shell.run("pastebin get T2r2qxNj bar")
    term.setTextColor(colors.green)
    print("File downloaded")
    term.setTextColor(colors.white)
else
    term.setTextColor(colors.green)
    print("bar image found!")
    term.setTextColor(colors.white)
end
print("Sign check completed!")
print("Checking for computer label")
if os.getComputerLabel() == nil then
    term.setTextColor(colors.red)
    print("Warning: Computer is not labeled!")
    print("Labelling Computer")
    os.setComputerLabel("Billboard Comp")
    term.setTextColor(colors.white)
else
    term.setTextColor(colors.green)
    print("Computer is already labelled. Great!")
    term.setTextColor(colors.white)
end
print("System Check Completed!")
sleep(1)
print("Starting Billboard!")
term.redirect(monitor)
local img2 = paintutils.loadImage("image")
local img3 = paintutils.loadImage("bar")
local img4 = paintutils.loadImage("night")
local img5 = paintutils.loadImage("moon")
local img6 = paintutils.loadImage("village")
local img7 = paintutils.loadImage("mars")
sleep(0.5)
x=1
t=5
while true do
  paintutils.drawImage(img2, 1, 1)
  sleep(t)
  paintutils.drawImage(img3, 1, 1)
  sleep(t)
  paintutils.drawImage(img4, 1, 1)
  sleep(t)
  paintutils.drawImage(img5, 1, 1)
  sleep(t)
  paintutils.drawImage(img6, 1, 1)
  sleep(t)
  paintutils.drawImage(img7, 1, 1)
  sleep(t)
end