Subversion Procedural Cities Dec 2008

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Introversion Software

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59,100

Published on February 4, 2011 2:08:54 PM ● Video Link: https://www.youtube.com/watch?v=J30i0gABfS8

Duration: 2:06

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115

December 23rd 2008

The first half of the video shows the latest version of the Subversion city generator. It now operates in a very different (and much better) way. Once the road network has been finished, a new system takes over -- which I've called the Geometry Generator. This system is responsible for running all the different procedural generation algorithms in turn as they are required, generating all of the data of the city and pushing it onto the graphics card in realtime before your eyes, starting with a road network and ending at the buildings and skyscrapers.
The second half of the video shows the work-in-progress generating the insides of buildings. Right now only three bits of detail exist : support columns, elevator shafts (empty), and stairwells. But crucially, and this is where the real magic has happened : the insides of the building now use the same Geometry Generator system as the city and the same data structures, meaning the whole thing has been unified. So instead of generating Parks and Streets and Buildings, we are now generating Floors and Windows and Stairwells, but the underlying system is the same.