[gcr]

One of my fun projects was compressing all community levels for SRB2Kart (based on the Doom II engine) into a single archive suitable for WebGL rendering of map previews.

I was able to get all 220MB of the default SRB2kart maps down into 12.9MB, and could even get down to 5MB with heavy texture compression. LZMA alone could only do 37MB, so I was pretty pumped.

One of the harder parts is compressing the vertex data and adjacency information (which linedefs connect which vertices). I never figured out a satisfying way of doing that, but this makes me want to try again...