Spielberg commissioned "E.T. the Extra-Terrestrial" writer Melissa Mathison to script a film about Tintin battling ivory hunters in Africa. Spielberg saw Tintin as an "Indiana Jones for kids" and wanted Jack Nicholson to play Haddock. Unsatisfied with the script, Spielberg continued production on "Indiana Jones and the Last Crusade"; the rights returned to the Hergé Foundation. Claude Berri and Roman Polanski became interested in filming the property, while Warner Bros. negotiated for the rights, but they could not guarantee the "creative integrity" that the Foundation found in Spielberg. In 2001, Spielberg revealed his interest in depicting Tintin with computer animation. In November 2002, his studio DreamWorks reestablished the option to film the series. Spielberg originally said he would only produce the film. In 2004, French magazine "Capital" reported Spielberg was intending a trilogy based on "The Secret of the Unicorn" / "Red Rackham's Treasure", "The Seven Crystal Balls" / "Prisoners of the Sun" and "The Blue Lotus" / "Tintin in Tibet" (which are separate stories, but both feature Chang Chong-Chen). By then, Spielberg had reverted to his idea of a live-action adaptation and called Peter Jackson to ask if Weta Digital would create a computer-generated Snowy.