Class: RETMX::Map::Layer::Data

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/retmx.rb

Constant Summary collapse

GID_FLIP_X = 
1.<< 31
GID_FLIP_Y = 
1.<< 30

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(layer, xml) ⇒ Data

Returns a new instance of Data.



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# File 'lib/retmx.rb', line 301

def initialize(layer, xml)
  @layer = layer
  @xml = xml
  @encoding = xml.attributes['encoding']
  @compression = xml.attributes['compression']
  
  @raw = []
  @raw_data = xml.text
  @data = []
  
  #decoding
  case @encoding
    when 'base64'
    @raw_data = Base64.decode64(@raw_data)
    when 'csv'
    @raw_data = @raw_data.tr("\n",'')
  end

  #inflate compress
  case @compression
  when 'zlib'
    zs = Zlib::Inflate.new
    @raw_data = zs.inflate(@raw_data)
    zs.finish
    zs.close
  when 'gzip'
    gz = Zlib::GzipReader.new(StringIO.new(@raw_data))
    @raw_data = gz.read
    gz.close
  end

  #Data XML
  if @encoding.nil? and @compression.nil?
    xml.elements.each('tile') {|e|
      @raw << e.attributes['gid'].to_i
    }
  elsif @encoding == 'csv'
    @raw = @raw_data.split(',').collect {|x| x.to_i}
  else
    @raw = @raw_data.unpack("V*")
  end

  get_data

end

Instance Attribute Details

#compression ⇒ Object (readonly)

The compression used to compress the tile layer data. Tiled Qt supports “gzip” and “zlib”.



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# File 'lib/retmx.rb', line 292

def compression
  @compression
end

#encoding ⇒ Object (readonly)

The encoding used to encode the tile layer data. When used, it can be “base64” and “csv” at the moment.



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# File 'lib/retmx.rb', line 289

def encoding
  @encoding
end

#layer ⇒ Object (readonly)

Layer belongs



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# File 'lib/retmx.rb', line 295

def layer
  @layer
end

#xml ⇒ Object (readonly)

REXML internal



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# File 'lib/retmx.rb', line 298

def xml
  @xml
end

Instance Method Details

#[](i) ⇒ Object 



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# File 'lib/retmx.rb', line 348

def [] (i)
  @data[i]
end

#each ⇒ Object 



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# File 'lib/retmx.rb', line 352

def each
  @data.each { |i| yield i }
end