Is a very old ticket. 9 years ago http://trac.wildfiregames.com/ticket/9 Even have a patch, may be is outdated. To have features in 0 A.D needs a programer working in that, need test it very well. http://trac.wildfiregames.com/query?status=assigned&status=new&status=reopened&group=status&milestone=Alpha+18 Here you can see active tasks.