Question DllNotFoundException but I have the dll?

I am getting a DllNotFoundException error while working on my project which uses the FastNoise2 library's C# bindings. It's very important that I use this library since I need very fast and efficient noise for my game's terrain generator.

I recently switched over to Linux (Manjaro) and I am remaking a previous terrain generator from scratch. I believe it worked fine while I was on Windows, but now it seems it can no longer detect the dll for whatever reason. I do not have much experience with dll files so this is relatively new to me.

Editor version: 2023.1.3f1

Error:

DllNotFoundException: FastNoise assembly:<unknown assembly> type:<unknown type> member:(null)

FastNoise..cctor () (at Assets/_Packages/FastNoise2/FastNoise2.cs:283)

FastNoise2: https://github.com/Auburn/FastNoise2
FastNoise2 C# Bindings: https://github.com/Auburn/FastNoise2Bindings

I have moved around the files in the C# bindings slightly, just moving the dll file to the CSharp folder and deleting the test, but I tried restoring it to the original layout and that also doesn't work.

The current layout:
FastNoise2.cs
FastNoise.dll

The script accessing it:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using Quixel;
5.  
6. public class HoshiTerrain : MonoBehaviour, IGenerator
7. {
8.     float mult = 0.05f;
9.     FastNoise Surface = FastNoise.FromEncodedNodeTree("JQDNzMw9AACAP83MzD0AAIA/FAAEAAAAAAAAAKBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABDQADAAAAAACAQCcAAQAAAAkAAM3MTD4AAAAAvwAAAAAAAAAAAAA=");
10.  
11.     public VoxelData calculateDensity(Vector3 position)
12.     {
13.         float density = Surface.GenSingle3D(position.x * mult, position.y * mult, position.z * mult, 64);
14.  
15.         VoxelData voxel = new VoxelData();
16.  
17.         voxel.density += density;
18.  
19.         return voxel;
20.     }
21. }
22.  

File path if that makes any difference:
Assets/_Project/Code/Scripts/Terrain/Generator/HoshiTerrain.cs

You can see FastNoise2.cs in the C# bindings repository as well as the dll file if needed. I have not edited it.

Also, if there is some issue with using the dll, how should I use the library without it? I have never used a C++ library with C# so I do not have much experience with this.

 

Uhm, you do know that native libraries are not cross platform, right? A native windows DLL will only work on windows. You need the linux version of that library. Usually such libraries have the extension ".so" (shared object) which is the equivalent of a dll on linux. However linux doesn't really care about extensions That github page seems to offer precompiled versions for different platforms. Expand the "Assets" in a release to see the files. In the linux builds inside the bin folder you should find the actual library.

ps: Make sure you place native code libraries inside the plugins folder inside the Assets folder and check the import settings as you can / have to select for which platforms a certain plugin should be used or not.