MoveVelocity passed to RequestDirectMove has high Z

Unreal Courses Talk
,
#1

I’ve gotten the forward/backward movement working, but not the rotation. I think this is because the Z of MoveVelocity/ForwardIntention is too high. It’s currently at .391. I’ve noticed that when I move the Nav Mesh Bounds Volume up and down, the Z value changes. (If I make the Nav Mesh much lower or higher, Z of MoveVelocity goes up even more, to as high as ~.9.)

Am I chasing a red herring, or is there some trick to Nav Mesh placement so that your path-finding vector Z is closer to 0?

Why do I think this high Z value is breaking rotation? If I put my tank perpendicular to the AI tank, here are my vectors:
LogTemp: Warning: Tank_BP2_1012: CurrentTankForward: X=1.000 Y=-0.010 Z=-0.000
LogTemp: Warning: Tank_BP2_1012: Forward intention: X=0.035 Y=0.339 Z=0.940 <-- I’d expect this to have Y closer to 1 and Z closer to 0
LogTemp: Warning: Intend turn throw: X=0.010 Y=0.940 Z=-0.34

My theory is that with a Z value so low, there isn’t enough throw to overcome the friction. If I multiply it by five, I see fast spinning, but at the current value I see no rotation at all.

(I’ve also set AcceptanceRadius very low, to rule that out as a problem.)

Thanks!

#2

It’s fixed. Z of Movement Vector is now reliably close to 0. After lots of fuss and digging through these forums and messing with settings, nothing seemed to work, so I just loaded an earlier commit, removed my tanks from the map and re-added em from the BP. That seemed to do the trick!

I also set all the tank meshes so they can’t effect navigation, not sure if that helped or not.

#3

I’m having the exact same problem. The tanks from lecture 169 (dot product) move a few meters and stop, or just don’t move at all. In this lecture, they don’t rotate at all. I have the same problem with the high Z value. It’s around 0.9

Unfortunately removing and re-adding the tanks does nothing for me. I’m using 4.18.3 so it looks like they just stopped working after some update.

#4

FWIW, I’m on 4.19.2. My Nav Mesh Bounds Volume has location and rotation of 0/0/0, Scala at 100/100/0.5 (X/Y/Z).

There’s also a Recast Nav Mesh (Called RecastNavMesh-Default) which is created when the bounds volume is created. I think those settings are important as well, but mine are just default. I guess you could try deleting your Bounds Volume and Recast Nav Mesh, then recreating your Bounds Volume?

Please let us know if you figure it out, as I’m sure I could fall back into this trap again!

Privacy & Terms