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Aug 22, 2014 at 16:31 comment added Ben Ezard As the maps can get fairly huge, I went for a quadtree-based solution in the end - I already used quadtrees for speeding up collision detection, but it hadn't even crossed my mind to use them for determining whether or not stuff was onscreen until I read your answer, so thanks :-)
Aug 22, 2014 at 16:29 vote accept Ben Ezard
Aug 22, 2014 at 12:25 history answered rvalerio CC BY-SA 3.0