[HELP] Underwater or underground objects

[Hrap]

hi, can anyone help?
How to find out,
whether the object is underwater or underground,
such as ore or grass

[oiramario]

check pos.z with liquid height it means above or under water.

[Dupheadss]

Depending on your meshes you can also check the flag of the nearest poly around the nodes vector.

[Jadd]

For nodes specifically you can infer some characteristics from a traceline query. This is not *entirely* accurate -- there are some edge cases -- but it is the simplest option. If you need higher precision you will need to do a sphere intersection with the map geometry.

Run a terrain/wmo traceline from [node.x, node.y, node.z + node.iteractDistance] to [node.x, node.y, node.z - node.interactDistance]:
1. No hit means the node is "floating" and is probably invalid (this should rarely happen: edge case; or ostensibly spawned in a broken position underground or something.)
2. WMO hit means it is attached to a building or cave.
3. Terrain hit means it is above ground.

To check if a node (or any position) is underwater, there is a better option to consider using over traceline - it is possible that there are liquid chunks above the node without the node necessarily being underwater.

delegate bool World::QueryLiquid(nint world, in Vector3 position, out int liquid, out float surface);

// Usage:
var world = World::GetActiveScene();
var underwater = World::QueryLiquid(world, node.Position, out var liquidId, out var surface);

[Hrap]

Heh... Thanks a lot for help
This turned out to be a very difficult task for my.
I don't know yet how to start tracing lines.
All I have is the position of the player and the node.
I understand that I need to check if there are polygons between the player and the node.
But how and where to read these polygons, I don’t know

[oiramario]

const uint32_t WorldIntersect = 0x7A3B70;
Search the forum for how to use it.

for liquid you must read acore code.