require 'gosu'
require 'YAML'

require 'Platform'
require 'Tileset'

# TODO: Make a FontManager similar to ImageManager. I'm creating waaaay too many identical Gosu::Font objects.

module OperationLambda
  module ImageManager
    ImagesDir = File.join(Platform::ApplicationMediaDir,'images')
    StandardDir = File.join(ImagesDir,'standard')
    LoadedTilesets = []
    StandardImages = {}

    module_function

    def load_images
      standard_defs_file = File.join(StandardDir,'standard.yaml')
      standard_defs = YAML.load_file(standard_defs_file)
      window = MainWindow.instance
      standard_defs.each do |key,file|
        path = File.join(StandardDir,file)
        StandardImages[key] = Gosu::Image.new(window,path,true)
      end
    end

    def load_tileset(set)
      if set[:cat] == :user
        dir = Platform::UserTilesetDir
      else
        dir = Platform::ApplicationTilesetDir
      end
      LoadedTilesets.push(Tileset.new(set[:dir],dir))
    end

    def tile(key)
      LoadedTilesets[0][key]
    end

    def image(key)
      return StandardImages[key] || raise("No image available for #{key} in #{StandardImages.inspect}")
    end

  end
end