Google wave ASCII art

wave.rb

#!/usr/bin/env ruby

# http://gist.github.com/152050
# thanks http://www.ascii-art.de/ascii/uvw/wave.txt

class Sprite
  attr_accessor :data, :w, :h
  def initialize w = 80, h = 23
    @w = w
    @h = h
    clear
  end
    
  def self.fromBuf buf
    s = Sprite.new buf[0].length, buf.length
    s.data = buf
    s
  end
  
  def clear
    @data = (0...@h).map {' '*@w}
  end
  
  def blit to, destx = 0, desty = 0
    (0...@h).each { |y|
      (0...@w).each { |x|
        dx = destx + x
        dy = desty + y
        next if dx >= to.w or dx < 0
        next if dy >= to.h or dy < 0
        next if @data[y][x] == ' '[0]
        to.data[dy][dx] = @data[y][x]
      }
    }
  end
  
  def to_s
    @data
  end
end

class Animation
  
  def initialize sprites # = [[duration, sprite], [dur, spr], ...]
    @sprites = sprites
    @idx = -1
    @remaining = 1
  end
  
  def blit to, destx = 0, desty = 0
    @remaining -= 1
    if @remaining == 0 then
      @idx += 1
      @idx = 0 if @idx == @sprites.length
      @remaining = @sprites[@idx][0]
      @sprite = @sprites[@idx][1]
    end
    @sprite.blit to, destx, desty
  end
  
end

$screen = Sprite.new

$wave1 = Sprite.fromBuf [
"   )."*40,
"`-'  "*40
]

$bigwave = Sprite.fromBuf [
"         _.====.._                             ",
"       ,:._       ~-_                          ",
"           `\\        ~-_                       ",
"             |          `.                     ",
"           ,/             ~-_                  ",
"  -..__..-''                 ~~--..__...----..."
]

$surfer1 = Sprite.fromBuf [
'    \O     ',
'     |\    ',
'    / \    ',
'   J   \   ',
'==========='
]
$surfer2 = Sprite.fromBuf [
'     O/    ',
'    /|     ',
'    / \    ',
'   /   \   ',
'==========='
]

$W = Sprite.fromBuf [
'           ',
' |       | ',
'  \     /  ',
'   \/^\/   '
]

$A = Sprite.fromBuf [
'    ___    ',
'   /   \   ',
'  |_____|   ',
'  |     |   '
]

$V = Sprite.fromBuf [
'            ',
'   |    |   ',
'    \  /    ',
'     \/     '
]

$E = Sprite.fromBuf [
'           ',
'  +-----   ',
'  |-----   ',
'  |_____   '
]

$RO = Sprite.fromBuf [
'ROFL:ROFL:LOL:         ',
'           A           ',
'  L   /--------        ',
'  O ===      []\       ',
'  L    \        \      ',
'        \________]     ',
'           |  |        ' ,
'        ------------/  '
]
$FL =  Sprite.fromBuf [
'         :LOL:ROFL:ROFL',
'           A           ',
'      /--------        ',
' LOL===      []\       ',
'       \        \      ',
'        \________]     ',
'           |  |        ' ,
'        ------------/  '
]

$ohyeah1 = Sprite.fromBuf ["Revvin' up your engine / Listen to her howlin' roar / Metal under tension / Beggin' you to touch and go / Highway to the Danger Zone / Ride into the Danger Zone / Headin' into twilight / Spreadin' out her wings tonight / She got you jumpin' off the track / And shovin' into overdrive / Highway to the Danger Zone / I'll take you / Right into the Danger Zone / You'll never say hello to you / Until you get it on the red line overload / You'll never know what you can do / Until you get it up as high as you can go / Out along the edges / Always where I burn to be / The further on the edge / The hotter the intensity / Highway to the Danger Zone / Gonna take you / Right into the Danger Zone / Highway to the Danger Zone"]
$ohyeah2 = Sprite.fromBuf ["We're no strangers to love / You know the rules and so do I / A full commitment's what I'm thinking of / You wouldn't get this from any other guy /  / I just wanna tell you how I'm feeling / Gotta make you understand /  / Never gonna give you up / Never gonna let you down / Never gonna run around and desert you / Never gonna make you cry / Never gonna say goodbye / Never gonna tell a lie and hurt you /  / We've known each other for so long / Your heart's been aching, but / You're too shy to say it / Inside we both know what's been going on / We know the game and we're gonna play it /  / And if you ask me how I'm feeling / Don't tell me you're too blind to see /  / Never gonna give you up / Never gonna let you down / Never gonna run around and desert you / Never gonna make you cry / Never gonna say goodbye / Never gonna tell a lie and hurt you /  / Never gonna give you up / Never gonna let you down / Never gonna run around and desert you / Never gonna make you cry / Never gonna say goodbye / Never gonna tell a lie and hurt you /  / (Oooooooh, Give you up) / (Oooooooh, Give you UP) / Never gonna give, never gonna give / (Give you up) / Never gonna give, never gonna give / (Give you up) /  / We've known each other for so long / Your heart's been aching, but / You're too shy to say it / Inside we both know what's been going on / We know the game and we're gonna play it /  / I just wanna tell you how I'm feeling / Gotta make you understand /  / Never gonna give you up / Never gonna let you down / Never gonna run around and desert you / Never gonna make you cry / Never gonna say goodbye / Never gonna tell a lie and hurt you /  / Never gonna give you up / Never gonna let you down / Never gonna run around and desert you / Never gonna make you cry / Never gonna say goodbye / Never gonna tell a lie and hurt you /  / Never gonna give you up / Never gonna let you down / Never gonna run around and desert you / Never gonna make you cry / Never gonna say goodbye / Never gonna tell a lie and hurt you"]
$ohyeah = rand(2)==1 ? $ohyeah1 : $ohyeah2

$surfer = Animation.new [[10, $surfer1], [10, $surfer2]]

$roflcoptr = Animation.new [[1, $RO], [1, $FL]]

t = 0
while true
  $screen.clear
  `clear`
    
  Sprite.fromBuf(["#{Time.now}"]).blit $screen
  Sprite.fromBuf(["GOOGLE"]).blit $screen, 34, 2
  
  $W.blit $screen, 36, 3 + ((t+0)/16)%2
  $A.blit $screen, 47, 3 + ((t+4)/16)%2
  $V.blit $screen, 56, 3 + ((t+8)/16)%2
  $E.blit $screen, 66, 3 + ((t+12)/16)%2
  
  (15...24).step(2) {|y|
    $wave1.blit $screen, -10+(t%5)-y, y
  }
  
  $bigwave.blit $screen, 28, 11
  
  $surfer.blit $screen, 21 - (t/12)%2, 12 - (t/23)%2
  
  $roflcoptr.blit $screen, (t%300) - 200, 3
  
  $ohyeah.blit $screen, 80+200-40-(t % ($ohyeah.data[0].length + 80+200-40)), 22
  
  puts $screen.to_s
  
  t += 1
  sleep 0.1
end