Error CS0161: Not all code paths return a value?

Unity Engine
1

Edit: Thread Answered

Hi, so I am try to make a voxel-based game and this section of code is ment for face checking.

bool CheckVoxel (Vector3 pos) {
        int x = Mathf.FloorToInt (pos.x);
        int y = Mathf.FloorToInt (pos.y);
        int z = Mathf.FloorToInt (pos.z);

        if (x < 0 || x > VoxelData.ChunkWidth - 1 || y < 0 || y > VoxelData.ChunkHeight - 1 || z < 0 || z > VoxelData.ChunkWidth - 1)
              return false;
return voxelMap [x, y, z];
         }
}

So, I was wondering if anyone could help me. I was following a YouTube tutorial to make this. I asked the content creator for help, I am just waiting for a response. I figured Ixd ask here as well.

Here is the error and warning Unity threw my way:

WARNING:
[01:14:29] …\Chunk.cs(51,3): Unreachable Code Detected

ERROR:
[01:14:29] …\Chunk.cs(43,7): error CS0161: ‘Chunk.CheckVoxel(Vector3)’: not all code paths return a value

Here is a link to the code provided by the YouTube Content Creator:

I hope this is enough information.

2

return voxelMap [x, y, z]; in right after return false; Move that to outside of the conditional.

Not sure if this is the problem, hard to read the formatting.

3

Replace the current ‘Chunk’ script with the class below. (I’ve marked the edit at line 62).

using System.Collections.Generic;
using UnityEngine;

public class Chunk : MonoBehaviour {

    public MeshRenderer meshRenderer;
    public MeshFilter meshFilter;

    int vertexIndex = 0;
    List<Vector3> vertices = new List<Vector3>();
    List<int> triangles = new List<int>();
    List<Vector2> uvs = new List<Vector2>();

    bool[,,] voxelMap = new bool[VoxelData.ChunkWidth, VoxelData.ChunkHeight, VoxelData.ChunkWidth];

    void Start() {

        PopulateVoxelMap();
        CreateMeshData();
        CreateMesh();

    }

    void PopulateVoxelMap() {

        for (int y = 0; y < VoxelData.ChunkHeight; y++) {
            for (int x = 0; x < VoxelData.ChunkWidth; x++) {
                for (int z = 0; z < VoxelData.ChunkWidth; z++) {

                    voxelMap[x, y, z] = true;

                }
            }
        }

    }

    void CreateMeshData() {

        for (int y = 0; y < VoxelData.ChunkHeight; y++) {
            for (int x = 0; x < VoxelData.ChunkWidth; x++) {
                for (int z = 0; z < VoxelData.ChunkWidth; z++) {

                    AddVoxelDataToChunk(new Vector3(x, y, z));

                }
            }
        }

    }

    bool CheckVoxel(Vector3 pos) {

        int x = Mathf.FloorToInt(pos.x);
        int y = Mathf.FloorToInt(pos.y);
        int z = Mathf.FloorToInt(pos.z);

        if (x < 0 || x > VoxelData.ChunkWidth - 1 || y < 0 || y > VoxelData.ChunkHeight - 1 || z < 0 || z > VoxelData.ChunkWidth - 1) {
            return false;
        }
        // ****
        return voxelMap[x, y, z];

    }

    void AddVoxelDataToChunk(Vector3 pos) {

        for (int p = 0; p < 6; p++) {

            if (!CheckVoxel(pos + VoxelData.faceChecks[p])) {

                vertices.Add(pos + VoxelData.voxelVerts[VoxelData.voxelTris[p, 0]]);
                vertices.Add(pos + VoxelData.voxelVerts[VoxelData.voxelTris[p, 1]]);
                vertices.Add(pos + VoxelData.voxelVerts[VoxelData.voxelTris[p, 2]]);
                vertices.Add(pos + VoxelData.voxelVerts[VoxelData.voxelTris[p, 3]]);
                uvs.Add(VoxelData.voxelUvs[0]);
                uvs.Add(VoxelData.voxelUvs[1]);
                uvs.Add(VoxelData.voxelUvs[2]);
                uvs.Add(VoxelData.voxelUvs[3]);
                triangles.Add(vertexIndex);
                triangles.Add(vertexIndex + 1);
                triangles.Add(vertexIndex + 2);
                triangles.Add(vertexIndex + 2);
                triangles.Add(vertexIndex + 1);
                triangles.Add(vertexIndex + 3);
                vertexIndex += 4;

            }
        }

    }

    void CreateMesh() {

        Mesh mesh = new Mesh();
        mesh.vertices = vertices.ToArray();
        mesh.triangles = triangles.ToArray();
        mesh.uv = uvs.ToArray();

        mesh.RecalculateNormals();

        meshFilter.mesh = mesh;

    }

}
2 Likes
4

Thanks so much VectorBox, it worked. Looks like I had my blinders on lol. Thanks you to Chris-Trueman.

1 Like
5

Hey

Hey, so it got rid of the error but now for some reason my textures aren’t displaying correctly. Can you help? This is what it is doing:

EDIT: I fixed it, I had to fix something in my other script thanks m8!

1 Like