Hi DtS,

That's not quite it - those riders do sit on vanilla horses fine, as per the Armenian Cataphracts and Prodromoi already posted, using the regular 256x256/512x512 horse BIFs. What I was trying to do was get two horses onto one BIF by using a larger BIF for the horses.

This inevitably reduces the size of each horse figure when it is rendered in game, and the rectangles MUST be defined relative to a 256x256 plate, otherwise they won't line up with the horses.

The only way you can avoid resetting the rectangles with an oversize BIF is by also making the units larger (ie if you simply blow up the entire plate instead of adding extra blank canvas - in which case you don't create any extra space in the BIF and therefore there's no point doing it).

Go back to post #40 above, that goes into more detail