why not do this? it's simple enough, all we need is the cartesian plane in order to aim.
You're on windows and as so can use mods, most artillery and spg's in this game use bombs, for that purpose get this mod And mod settings mod (to enable bomb trajectory)
You're on windows and as so can use mods, most artillery and spg's in this game use bombs, for that purpose get this mod And mod settings mod (to enable bomb trajectory)