am I missing something here?

[hasty carbon]

Don't you need to add the Z from the Actor Location back into this?

BoxExtent itself is just a relative value. The WorldLocation of that box's center is in "Origin"

[fading granite]

I know, but I need to get a more accurate reading of the obstacle's height

I'm trying to make it so that the character knows how high it should jump depending on the obstacle's top position from the ground

[hasty carbon]

Yeah that's fine, but from the math you posted it seems like you use the BoxExtent Z for the TraceZ, probably for Starting

[fading granite]

yes

[hasty carbon]

You are missing ADDING that BoxExtentZ on top of the ActorZ

At least that's what I think is missing there

Also, what is the top Vector from?

[fading granite]

the hit location

[fading granite]

alright there we go

so I gotta make sure to get the origin too

not just the extent

I don't think it matters the adding order?

[fading granite]

and I thought of multiplying it to get the center of the hit actor

but it ends up going somewhere else

[hasty carbon]

:P Maybe? Does 5 + 2 = 2 + 5? Who knows.

[hasty carbon]

Why multiplying it? And with that?

[fading granite]

actually yeah it does make sense...
the subtracting order matters the most

[hasty carbon]

Yeah

[fading granite]

actually now that I made a second thought

the XY position don't actually need to be precise

tho, then there comes the question "what if the object has a more complex shape?"

which is where the hit location comes into place

in this case I think I need the multi line trace by channel

so that it starts off a few cm higher than the actor's bounds and then gets the first hit which is the actor's convex mesh collision and then the ground

alright, perfect!