Corpse laying down properly is more of a ragdoll issue. PSO2 doesn't have ragdoll physics. Which is kinda silly, considering it has physics for so many other things.
When stuff dies or falls in PSO2, they just use a generic falling animation, which looks like rubbish in this day and age.
What you'd normally do nowadays is blend a ragdoll into the getting hit/falling animation, so that the body will crumple up and react to environment collision better.
Speaking of which, interesting tidbit that I heard from a friend who bought that Japanese game dev history book which almost got f'd by asshole shitty translator scammers:
Apparently, Japanese people respect dead bodies and don't want to move them, which is why some Japanese games intentionally don't have ragdolls.
If you're not just talking about corpses, that's more of an IK "Inverse Kinematics" issue.
You know how 3d model skeletons are set up in a parent/child hierarchial structure?
For example, Hip -> Thigh -> Calf -> Foot? That's Forward Kinematics.
Inverse Kinematics works like this: Foot -> Calf -> Thigh.
What this means is that instead of animating your way down from the hip, you animate the foot and that automatically affects the bones between hip and thigh.
In regards to pitch/yaw/incline support, what this means is that the foot can detect whether it's colliding with the floor, and adjust height accordingly + bending the leg.
You can apply this IK calculation to existing animations. For example, there's a Skyrim mod for high heel IK that automatically adjusts in realtime, although it's a little buggy.
Anyway, leg IK is pretty common thing in games nowadays, and yet PSO2 doesn't have it.
Meanwhile, Final Fantasy 15 devs are
playing around with excessive stuff like hand/finger IKs for realtime dynamic wall-stroking adjustment.
IK in general is much easier to animate than FK, and can be used for other stuff like controlling spines, tails, and directing eye movement.
Naughty Dog uses an FK/IK blend method which allows them to use both methods in a single motion, for more control.
Not sure if that's the standard now, as my knowledge is outdated. I've been slacking way too much.
Did a quick search and couldn't find the video I saw a few years back, but I found this
Last of Us video instead. Body stuff starts at around 13m30s.
Just to be a clear, a lot of the stuff you'll see in those videos is more for the sake of cinematic/realism/immersion.
Obviously, PSO2 doesn't need to go that far... but some basic stuff really ought to be in there.
Haha. Yes.
Back on topic... some JP friends are telling me they wish Summoner had cooler pets.