This is the amazing thing about Peter Jackson. This scene is in the movie.
Quote:
In The Hobbit, Thorin Oakenshield and his company of dwarves found Orcrist and Glamdring in the cave of the three trolls, and Thorin claimed it as his own, while Gandalf claimed Glamdring.[2]
Thorin bore Orcrist throughout most of The Quest of Erebor. It, and Glamdring, was used against the goblins of the Misty Mountains, when they captured the group, yet again renewing their hatred of the elvish weapons
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The whole movie is basically a Tolkien fanboy wet dream.