Theres an eporter in the export sticky thread in this forum area.
http://www.blitzmax.com/Community/posts.php?topic=66815
Simply parent all your world objects to a single pivot and then try using the exporter JFK added there. (You may need to make some adjustments to it to save a hierachy)
Also there is an X exporter which I put together too. Its not compatible with everything (is any X export?!) but it works in B3D and DBP. However, it does handle an entire mesh tree which i think is what you want. I do have a truncater as well that removes NANs and whitespace which makes it more compatible.
http://www.blitzmax.com/Community/posts.php?topic=66815
Simply parent all your world objects to a single pivot and then try using the exporter JFK added there. (You may need to make some adjustments to it to save a hierachy)
Also there is an X exporter which I put together too. Its not compatible with everything (is any X export?!) but it works in B3D and DBP. However, it does handle an entire mesh tree which i think is what you want. I do have a truncater as well that removes NANs and whitespace which makes it more compatible.