Evaluate the valence intensity of the following snippet, considering the mood of the author. Give a score between 0 and 1 inclusive, where 0 is the most negative and 1 is the most positive.
Snippet: It is the sheer, selfish, wound licking, bar scrapping doggedness of Leon's struggle to face and transmute his demons that makes the movie a spirited and touching occasion, despite its patchy construction.