Billboard Program V3 Xmas Edition (Legacy Version for Tekkit 1.6)

-- Designed for an 8 wide by 5 tall advanced monitor

--Change this to the side the monitor is on
side = "back"
--Prevents program termination
os.pullEvent = os.pullEventRaw
--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.restore()
term.setBackgroundColor(colors.green)
term.setTextColor(colors.red)
term.clear()
print("Rolcam's Billboard Program V3 - Xmas Edition")
term.setTextColor(colors.white)
print(" ")
print("Beginning system check...")
--Checks for missing signs and labels itself
print("Checking signs...")
if not fs.exists("beach") then
    term.setTextColor(colors.red)
    print("Warning: beach image missing!")
    term.setTextColor(colors.white)
    print("Downloading image...")
    shell.run("pastebin get F8hWPxD1 beach")
    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("tree") then
    term.setTextColor(colors.red)
    print("Warning: Christmas tree 1/3 image missing!")
    term.setTextColor(colors.white)
    print("Downloading image...")
    shell.run("pastebin get C4p7xrWd tree")
    term.setTextColor(colors.green)
    print("File downloaded")
    term.setTextColor(colors.white)
else
    term.setTextColor(colors.green)
    print("Christmas tree image 1/3 found!")
    term.setTextColor(colors.white)
end
if not fs.exists("tree2") then
    term.setTextColor(colors.red)
    print("Warning: Christmas tree image 2/3 missing!")
    term.setTextColor(colors.white)
    print("Downloading image...")
    shell.run("pastebin get 1v1fPcth tree2")
    term.setTextColor(colors.green)
    print("File downloaded")
    term.setTextColor(colors.white)
else
    term.setTextColor(colors.green)
    print("Christmas tree image 2/3 found!")
    term.setTextColor(colors.white)
end
if not fs.exists("tree3") then
    term.setTextColor(colors.red)
    print("Warning: Christmas tree image 3/3 missing!")
    term.setTextColor(colors.white)
    print("Downloading image...")
    shell.run("pastebin get YAYejpSW tree3")
    term.setTextColor(colors.green)
    print("File downloaded")
    term.setTextColor(colors.white)
else
    term.setTextColor(colors.green)
    print("Christmas tree image 3/3 found!")
    term.setTextColor(colors.white)
end
if not fs.exists("snowflake") then
    term.setTextColor(colors.red)
    print("Warning: snowflake image missing!")
    term.setTextColor(colors.white)
    print("Downloading image...")
    shell.run("pastebin get XbLRZ99h snowflake")
    term.setTextColor(colors.green)
    print("File downloaded")
    term.setTextColor(colors.white)
else
    term.setTextColor(colors.green)
    print("snowflake 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 dxZLBDSR 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

--Downloads the slot hall signs if this board is configured for the slot hall
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)
img2 = paintutils.loadImage("beach")
img3 = paintutils.loadImage("tree")
img32 = paintutils.loadImage("tree2")
img33 = paintutils.loadImage("tree3")
img4 = paintutils.loadImage("snowflake")
img5 = paintutils.loadImage("village")
sleep(0.5)
t=5
while true do
    paintutils.drawImage(img2, 1, 1)
    sleep(t)
    -- Animated Christmas Tree
    yCoord = -12
    while yCoord < 2 do
        paintutils.drawImage(img3, 1, yCoord)
        yCoord = yCoord + 1
        sleep(0.25)
    end
    xTime = 5
    while xTime > 0 do
        paintutils.drawImage(img32, 1, 1)
        sleep(0.25)
        paintutils.drawImage(img3, 1, 1)
        sleep(0.25)
        paintutils.drawImage(img33, 1, 1)
        sleep(0.25)
        paintutils.drawImage(img3, 1, 1)
        sleep(0.25)
        xTime = xTime - 1
    end
    paintutils.drawImage(img4, 1, 1)
    sleep(t)
    paintutils.drawImage(img5, 1, 1)
    sleep(t)
end