Well it was a bit harder than I anticipated to extract just the code to load ans set up a world, but that's the stand alone project code ready now that can handle any exported world, with varyingmodes depending on how big you want the source files (mobile or Desktop), and if you value loading speed or space.
A small example island using grass, multiple texture layers, lights, particles and numerous models:-
----> "smart" export settings to determine image quality: load time 11.1 seconds, size on disk 307mb, full quality
----> "fastest" export settings to determine image quality: load time 8.4 seconds, size on disk 661mb, full quality
----> "mobile" suitable export settings: load time 8.0 seconds, size on disk 74mb, lowered image quality throughout (and this can go smalled actually, based on the mobile screen size)
It#s important to know that the larger the world, the more pronounced the speed increase will be for the fast export option as this uses memblocks for large images.
There's some optimisation to do on paths and grass still that should significantly reduce those files sizes, but it's now as close to "plug and play" for your own code as I can reasonably get it.