TerrainChunk.RebuildColliders C# (CSharp) Method

    void RebuildColliders()
    {
        while (meshes.transform.childCount > 0) {
            DestroyImmediate(meshes.transform.GetChild(0).gameObject);
        }

        Vector2 chunkOrigin = new Vector2(chunkX * CHUNK_SIZE, chunkY * CHUNK_SIZE); //voxels[0].position;

        // Scan horizontally all chunk voxels, and group them into solid rows
        // Create one child GameObject for each row
        for (int y = 0; y < CHUNK_VOXELS_DIM; y++) {
            GameObject coll_go = new GameObject();
            coll_go.layer = LAYERID_SOLID;
            coll_go.transform.parent = meshes.transform;

            BoxCollider2D   bc = coll_go.AddComponent<BoxCollider2D>();
            bc.transform.parent = coll_go.transform;
            bc.name = "Box Collider R" + y;
            Vector2    bcBegin = chunkOrigin + new Vector2(0, y * VOXEL_SIZE);
            int        bcWidth = 0;

            for (int x = 0; x < CHUNK_VOXELS_DIM; x++) {
                if (voxels[y * CHUNK_VOXELS_DIM + x].IsSolid()) {
                    bcWidth++;
                    continue;
                }
                if (bcWidth > 0) {
                    AddBoxColliderTo(coll_go, ref bc, bcBegin, bcWidth);
                    // Make new collider to continue
                    bc = coll_go.AddComponent<BoxCollider2D>();
                    bc.transform.parent = coll_go.transform;
                    bc.name = "Box Collider R" + y;
                    bcBegin.x += (bcWidth + 1) * VOXEL_SIZE;
                    bcWidth = 0;
                } else {
                    bcBegin.x += VOXEL_SIZE;
                }
            }
            // Finalize if there was open counting row
            if (bcWidth > 0) {
                AddBoxColliderTo(coll_go, ref bc, bcBegin, bcWidth);
            }
            if (bc != null) { Destroy (bc); }
        }
    }