Very large world support with Z axis or without World Partition

Hi all,

I am new to Unreal Engine 5, having last messed around with UE3. I recently read about the ability to enable up to 88 million Km distances in the game map, where one game unit = one meter. However, for this to work, you need to use World Partition. The World Partition system creates a 2D representation of the scene, lacking a Z-axis.

When using mesh terrains, such as in the shape of a planet or asteroid, the lack of a Z-axis confuses the system on which side of the planet you were trying to load, since a single (X,Y) coordinate can be shared by the two points on a sphere.

My questions, if anyone would kindly answer:

  • Are projects involving planets, globes, spheres of massives poportions, and x,y,z distances incompatible with Word Partition?
  • Is World Partition required in order to achieve the 88 Million miles that’s been reported?
  • If not, what is the maximum world size for what I assume would be World Composition? 21 Km^2? Doesn’t UE5 have a 64-bit coordinate system?

Thanks :slight_smile:

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Interested as well about an answer on these questions. Tks