Long March 5 on the right track, using the real launch azimuth value. I'm still into the first stage ascent program (more an ascent script, really) but most of the hard work is done, now I only have to make things a bit smoother. Also working on a 7-seconds ignition sequence that matches what I've seen on Youtube (you have spark igniters, the LOX/LH2 core ignites and reaches full thrust, then the Kero/LOX boosters ignite and reach full thrust, then the boosters clamps are released. Once tower clear the roll script kicks in, followed by pitch and yaw.
Surface tiles (Hainan island) by 4throck.
@jarmonik : using the new shader, I get a yellow-ish second stage (it should be white). Thing is that the lower part of that stage and the interior material of the interstage are actually yellow-ish, so maybe it is yellow-illuminated by them ? How could I fix that ? I know it is WIP, so let's see how it works with next release.