Module: Nyan::Rainbow

Defined in:
lib/nyan/sprites/rainbow.rb

Constant Summary collapse

BAND_HEIGHT = 
3
BEND_LENGTH = 
18
SECTIONS = 
5
COLOURS = 
%w(1 2 3 4 5)
BLANK = 
(Array(Nyan::SPACE) * BEND_LENGTH).join
FRAME_HEIGHT = 
COLOURS.length * BAND_HEIGHT + 1
FRAME_WIDTH = 
SECTIONS * BEND_LENGTH
TOTAL_LENGTH = 
SECTIONS * BEND_LENGTH
TOTAL_HEIGHT = 
BAND_HEIGHT * COLOURS.length
SLICE = 
COLOURS.inject([]) do |slice, colour|
  bend = (Array(colour) * BEND_LENGTH)
  BAND_HEIGHT.times do
    slice << bend.join
  end
  slice
end

Class Method Summary collapse

Class Method Details

.frame(is_peak = true) ⇒ Object 



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# File 'lib/nyan/sprites/rainbow.rb', line 24

def self.frame(is_peak = true)
  frame_rows = Array.new(FRAME_HEIGHT + 1) { String.new }
  
  SECTIONS.times do
    this_slice = SLICE.dup
    FRAME_HEIGHT.times do |i|
      this_row = if (is_peak && i == FRAME_HEIGHT - 1) or (!is_peak && i == 0)
                   BLANK
                 else
                   this_slice.shift
                 end
      frame_rows[i] << this_row
    end
    is_peak = !is_peak
  end

  frame_rows.join(NEWLINE)
end

.to_frames ⇒ Object 



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# File 'lib/nyan/sprites/rainbow.rb', line 43

def self.to_frames
  @frames ||= [frame(true), frame(false)]
end