Module: SpriteKit::SpriteMethods

Defined in:
mygame/lib/sprite_kit/sprite_methods.rb

Class Method Summary collapse

Class Method Details

.generate_prefab(sprite, state) ⇒ Object 



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# File 'mygame/lib/sprite_kit/sprite_methods.rb', line 41

def self.generate_prefab(sprite, state)
  prefab = []

  rect_size = state.tile_selection
  column_gap = state.tile_selection.column_gap
  row_gap = state.tile_selection.row_gap

  columns = (sprite.source_w + column_gap).idiv(rect_size.w + column_gap)
  rows = (sprite.source_h + row_gap).idiv(rect_size.h + row_gap)

  sprite.columns = columns
  sprite.rows = rows

  columns.times do |column|
    rows.times do |row|
      # column_gap = column == 0 ? 0 : column_gap
      # row_gap = row == 0 ? 0 : row_gap
      offset_x = column * column_gap
      offset_y = row * row_gap
      prefab << {
        source_x: sprite.source_x + offset_x + (column * rect_size.w),
        source_y: sprite.source_y + offset_y + (row * rect_size.h),
        source_w: rect_size.w,
        source_h: rect_size.h,
        path: sprite.path,
        offset_x: offset_x,
        offset_y: offset_y,
      }
    end
  end

  prefab
end

.render_prefab(current_sprite) ⇒ Object 



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# File 'mygame/lib/sprite_kit/sprite_methods.rb', line 75

def self.render_prefab(current_sprite)
  if current_sprite.prefab.nil? || current_sprite.prefab.length <= 0
    return [current_sprite]
  end

  starting_x = current_sprite.source_x
  starting_y = current_sprite.source_y
  current_sprite.prefab.map do |node|
    node.dup.tap do |sprite|
      sprite.x = current_sprite.x - starting_x + node.source_x - node.offset_x
      sprite.y = current_sprite.y - starting_y + node.source_y - node.offset_y
      sprite.w = node.source_w
      sprite.h = node.source_h
    end
  end
end

.ruby_serialize_sprite(sprite) ⇒ Object 



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# File 'mygame/lib/sprite_kit/sprite_methods.rb', line 17

def self.ruby_serialize_sprite(sprite)
  has_prefab = sprite.prefab && sprite.prefab.length > 0
  prefab_or_path = nil
  if has_prefab
    prefab_or_path = "# Prefabs are quite large and memory intensive and don't share well. It is usually better to split the prefab into multiple distinct sprites.\n"

    prefab_or_path += "  prefab: [\n"
    prefab_or_path += sprite.prefab.map do |prefab_sprite|
      ruby_serialize_sprite(prefab_sprite)
    end.join(",\n") + "\n"
  else
    prefab_or_path = "path: \\\"#{sprite.path}\\\""
  end
<<~RUBY
{
  source_x: #{sprite.source_x},
  source_y: #{sprite.source_y},
  source_h: #{sprite.source_h},
  source_w: #{sprite.source_w},
  #{prefab_or_path}
}
RUBY
end

.serialize_sprite(sprite, format = :ruby) ⇒ Object 



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# File 'mygame/lib/sprite_kit/sprite_methods.rb', line 3

def self.serialize_sprite(sprite, format = :ruby)
  raise "Unable to serialize #{sprite}, no format given." if !format

  begin
    if format == :ruby
      SpriteMethods.ruby_serialize_sprite(sprite)
    elsif format == :json
      ## TODO: Use the JSON serializer
    end
  rescue
    raise "Unable to serialize #{sprite} with format: #{format}"
  end
end