@stanislas69, art isn't really my forte but I've created a branch with what I hope are the required changes for Terra Magna on GitHub. Before it gets merged into master, could you check I haven't done anything stupid/missed anything, please? When you find the time.
(The indenting in the actor files is all over the place. Tabs in roughly half, spaces in most of the others, with a mix of both in some files. Haven't done anything with it in the afore-mentioned branch so its clear what the pertinent changes are, but it would be nice to sort it out at some point.)