I'm trying to build a space game and one of the key parts is building on spherical planet. I want the buildings to be build on a grid (some building are 1x1, some 6x4,..., kinda like StarCraft). My problem is, I can't seem to find a way to build the buildings near poles, while maintaining properly oriented grid.
I think that joining cells near poles is a bad idea, because there will be parts, where 1 cell is continued by 2 cells and it will be impossible to build over these parts.
Any ideas how to solve this? Should I forget about the grid and just check, if the building collides with other buildings?