Ridley Scott: ‘Cinemas should not be allowed to go away’

With ‘Gladiator 2’ in the works, the revered ‘Blade Runner’ director returns with the first Matt Damon and Ben Affleck script since ‘Good Will Hunting’, a tale of duelling and rape in medieval France, plus a film about the murder of fashion designer Maurizio Gucci. He tells James Mottram why film-making is not a job, but a passion