From 7c9dc9ee663a15b791e6bb9d2c441c18ad158c23 Mon Sep 17 00:00:00 2001
From: LDDestroier <etheilig02@gmail.com>
Date: Sat, 8 Feb 2020 17:24:25 -0500
Subject: [PATCH] Create dvdlogo.lua

---
 dvdlogo.lua | 128 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100644 dvdlogo.lua

diff --git a/dvdlogo.lua b/dvdlogo.lua
new file mode 100644
index 0000000..316a42b
--- /dev/null
+++ b/dvdlogo.lua
@@ -0,0 +1,128 @@
+local nfte = require "nfte"
+
+local mon = peripheral.find("monitor")
+if mon then
+	mon.setTextScale(0.5)
+	term.redirect(mon)
+end
+
+local scr_x, scr_y = term.getSize()
+local max, min = math.max, math.min
+local floor, ceil = math.floor, math.ceil
+
+getSize = function(image)
+	local x, y = 0, #image[1]
+	for y = 1, #image[1] do
+		x = max(x, #image[1][y])
+	end
+	return x, y
+end
+
+local loadImageDataNFT = function(image, background) -- string image
+	local output = {{},{},{}} -- char, text, back
+	local y = 1
+	background = (background or " "):sub(1,1)
+	local text, back = " ", background
+	local doSkip, c1, c2 = false
+	local maxX = 0
+	local bx
+	for i = 1, #image do
+		if doSkip then
+			doSkip = false
+		else
+			output[1][y] = output[1][y] or ""
+			output[2][y] = output[2][y] or ""
+			output[3][y] = output[3][y] or ""
+			c1, c2 = image:sub(i,i), image:sub(i+1,i+1)
+			if c1 == tchar then
+				text = c2
+				doSkip = true
+			elseif c1 == bchar then
+				back = c2
+				doSkip = true
+			elseif c1 == "\n" then
+				maxX = max(maxX, #output[1][y])
+				y = y + 1
+				text, back = " ", background
+			else
+				output[1][y] = output[1][y]..c1
+				output[2][y] = output[2][y]..text
+				output[3][y] = output[3][y]..back
+			end
+		end
+	end
+	for y = 1, #output[1] do
+		output[1][y] = output[1][y] .. (" "):rep(maxX - #output[1][y])
+		output[2][y] = output[2][y] .. (" "):rep(maxX - #output[2][y])
+		output[3][y] = output[3][y] .. (background):rep(maxX - #output[3][y])
+	end
+	return output
+end
+
+local drawImage = function(image, x, y, terminal)
+	terminal = terminal or term.current()
+	local cx, cy = terminal.getCursorPos()
+	for iy = 0, #image[1] + 1 do
+		terminal.setCursorPos(x - 1, y + (iy - 1))
+		if image[1][iy] then
+			terminal.blit(
+				" " .. image[1][iy] .. " ",
+				"f" .. image[2][iy] .. "f",
+				"f" .. image[3][iy] .. "f"
+			)
+		else
+			terminal.clearLine()
+		end
+	end
+	terminal.setCursorPos(cx,cy)
+end
+
+local logo = {
+	xvel = (math.random(0, 1) * 2) - 1,
+	yvel = (math.random(0, 1) * 2) - 1,
+	x = floor(scr_x / 2),
+	y = floor(scr_y / 2),
+	img = loadImageDataNFT([[
+    00€€€€€€€€€€f      0fŸ0€€€€€€f‚‹
+   0fŸf0   f0‚0f0€f”   0f•0€fŠ     0f‡0€€f‡f€0    f0‹0€f‚
+   00€€     0f•0€f•    00€€f0fŸ0€fŸ   0f•0€f•     00€€
+0f•0€f•   0fŸ‡0€fŸ     0f•0€f‚0€€f‡     00€€    0f0€f…
+0€€€€€fŸ‡       00€€fŸ     0f•0€€€€€f
+              0f•f0‡
+     0f‡ƒƒƒ0€€€€€€f‚ƒƒƒ‹
+0f‡0€€€€€€fƒƒƒƒƒ‹0f0€€€€€€f‚‹
+0f0€€€€€€fƒ       0fŸ‡0€€€€€€fŸ
+   f0‚ƒ0f0€€€€€€€€€€€€€€fŸƒ
+           f0‚ƒƒƒƒƒƒ	]])
+}
+
+local imgXsize, imgYsize = getSize(logo.img)
+local xWall, yWall
+
+local render = function()
+	drawImage(logo.img, floor(logo.x), floor(logo.y))
+end
+
+local tick = function()
+	scr_x, scr_y = term.getSize()
+	xWall = scr_x - imgXsize + 1
+	yWall = scr_y - imgYsize + 1
+	logo.x = min(max(logo.x + logo.xvel, 1), xWall)
+	logo.y = min(max(logo.y + logo.yvel, 1), yWall)
+
+	if floor(logo.x) == 1 or floor(logo.x) == xWall then
+		logo.xvel = -logo.xvel
+	end
+	if floor(logo.y) == 1 or floor(logo.y) == yWall then
+		logo.yvel = -logo.yvel
+	end
+	render()
+end
+
+term.setBackgroundColor(colors.black)
+term.clear()
+
+while true do
+	tick()
+	sleep(0.05)
+end