Module: Spritopia

Extended by:
Spritopia
Includes:
ChunkyPNG
Included in:
Spritopia
Defined in:
lib/spritopia.rb,
lib/spritopia/version.rb

Defined Under Namespace

Modules: CLI

Constant Summary collapse

VERSION = 
"0.0.1"

Instance Method Summary collapse

Instance Method Details

#process_file(file) ⇒ Object 



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# File 'lib/spritopia.rb', line 35

def process_file(file)
  raise "File should be a .sprite file" unless file =~ /\.sprite$/
  basename = File.basename(file, ".sprite")
  dir  = File.dirname(file)
  basefilename = File.join(dir, basename)

  File.file?(file) or raise "The file #{file} did not exists"

  # Get the list of the images

  files = File.read(file).split("\n").map{|f| f.strip}

  # Calculate height and width
  sizes = files.map do |f|
    image = Image.from_file(File.join(dir,f))
    [image.width, image.height]
  end

  height = sizes.inject( 0 ) { |memo,i| memo+i[1] }
  width = sizes.inject( 0 ) { |memo,i| memo > i[0] ? memo : i[0] }


  # Generate the sprite
  canvas = Image.new(width,height)

  file_info = {}

  files.inject(0) { |current_height, filename|
    new_image = Image.from_file(File.join(dir,filename))
    canvas.replace!(new_image, 0, current_height)

    file_info[filename] = {:width => new_image.width, :height => new_image.height, :x => 0, :y => current_height, :x2 => new_image.width, :y2 => new_image.height + current_height }


    current_height + new_image.height
  }

  # Save the sprite

  puts File.basename(file,".sprite")

  canvas.save(basefilename+".png")

  # Save the json

  File.open(basefilename + ".json", "w") do |f|
    f.write file_info.to_json
  end

  true

end