After a long delay, I've finally released an update to GRFCodec and the related tools, seeing how many people are working (or want to work) on updating TTD's graphics.
You can get it here: http://www.ttdpatch.net/grfcodec/grfcodec_0_9.zip
(or visit the GRFCodec website at http://www.ttdpatch.net/grfcodec/)
Aside from fixing many bugs, in particular in GRFDiff and GRFMerge, I also added the option of translating a GRF file between the DOS and Windows palettes. To use this, run something like:
Code: Select all
grfcodec -m 1 -e file.grf