Think about how we could synchronize the planet terrain data.

[hubastard]

Since the player can change the shape of the terrain, we need to be able to replicate this data to all clients.
We will need to investigate how that part of the code works. Because I don't want to send the entire mesh data over the wire.

Maybe we can only send the diff from the original planet ?

[sp00ktober]

As players use the same seed the server (or whoever knows the changed shape) should be able to calculate a diff.
Maybe thats already done when the game savestate is created.

Anyways i think you are right, sending only a diff is a good idea.

[Flapperkewiet]

wait, so the terrain data isn't stored anywhere? Do the foundations directly modify the mesh?

[sp00ktober]

i dont know, i have not looked at how its implemented yet.

[Flapperkewiet]

It seems the height data is either stored in a ushort array in PlanetRawData.heightmap, or in a RenderTexture in PlanetData.heightmap

So there would be no need to send the mesh data, just the height data, which is stored in PlanetData, and for already joined players, there is a function called FlattenTerrain() in PlanetFactory

[hubastard]

Interesting if it's only a heightmap it might not be too bad, the server could also only send it when the player reaches the planet, it's not important information until you land / are close to the planet

[sp00ktober]

Just saw there is float PlanetData.data.QueryModifiedHeight(Vector3) and i have the feeling it gives you the height at a given position.

Its used for example in PlayerController::UpdatePhysicsDirect()