ive just created a city and when im building it it stops in bulding fat hole....
how can i fix that....

You might want to try making all the buildings separate entities and streets a separate entity. then put them all together and add some blocks, that will cut down the compiling time a TON and might fix your problem.

yeah, if you made a city, then it's gonna do that to you. I beleive Fat hull is the large open areas it's buildeing though I might be wrong. But usualy when I'm making a big level I compile after every big change so it won't have to take it all in at once. lol, maybe the dosen't even work. But if you're gonna make a city, don't have building interiors mixing with the exteriors that'd make building for ever, if you want to do interiors then make then separate maps, just some tips to help your future map building.

Yeah, like what I'm doing for my maps even is, making the whole thing, saving, erasing everything except one part, compile, save then doing that with the rest. cause I made a tile floor outa a bunch of squares(wanted added realism) and it took forever to compile. and no noticeable impact on fps on my 9800 Pro