I am new to all this creating objects with other programs. So I may not be using the correct words. Could really use some help, I'd love to get this working and possibly even upload it to the site. I've been working on an intense ramp for the game in SketchUp (screenshots below) and every time I export it to the game and load it, some of the area's either are not physically able to drive on, but instead I go through them. The other issue that happens is I drive close to the ramp and my tires just break and get stuck in the ground, I have some of the ramp underground. In Sketchup I have tried to make sure all the faces are white. I've watched the tutorial for Sketchup but I just can't figure it out. http://imgur.com/gallery/pGBL1
Sketchup makes messy unusable meshes most of the time unless you really know what youre doing and how to control it or the mesh is really simple. Its really not recommended to use sketchup for game models (or any other cad-like software for that matter) as they are not designed for it. If you insist on using sketchup, you will likely need to import the mesh into blender to clean it up afterwards and to make a separate, less detailed, collision mesh that does not have any split edges. There is more info on the wiki and forums about collision meshes, blender importing/exporting, ect. that you can find with a quick search