I had to split the model object into two separate model objects and then clone each of them to make matching collision models.
- Get yourself to this point with island1 in 3DS MAX. Delete all except the model, rename it, delete the game mesh and skin off it. Change the scene view to Top for the next step.
- With the model object still selected click on the “Polygon” button in the Modeling option box above the left navigator.
- Left click drag in the scene view to draw a box (select) half of of the model object, when you release the left click you’ll have all the selected polygons highlighted in red. On the right hand modification options find and click the one called “Detach”. This will create a new model with just that selection called “Object” which you should rename, land_island2 would be appropriate in this case. On both objects leave the “Edit Poly” and “Editable Poly” alone in the right hand modify area.
- The rest of the process is the same as the process in my prior post, you’re just working with two model objects now which will each a game mesh added and need a collision object created with collision mesh. For the collision material I used Vegetation, Grass Short, but you use what feels right to you out of the available options. At the end of it all before you export you should look like this screenshot.