MapInstance creation?

__int64 __fastcall MapInstance_sub_140835FC0(__int64 *rcx0, _DWORD *a2, int a3)
{
  __int64 result; // rax
  int v4; // esi
  _DWORD *v5; // rdi
  __int64 v6; // rbx
  __int64 v7; // rsi
  __int64 v8; // rsi
  void *v9; // r15
  signed int v10; // xmm6_4
  signed __int64 v11; // rax
  __int64 *v12; // rax
  __int64 *v13; // rdi
  Create_t a1; // [rsp+30h] [rbp-D0h]
  set_info_t set_info; // [rsp+90h] [rbp-70h]

  result = *((unsigned int *)rcx0 + 2);
  v4 = a3;
  v5 = a2;
  v6 = (__int64)rcx0;
  if ( *((_DWORD *)rcx0 + 3) != (_DWORD)result || (result = BittestGameFlags(1), (_DWORD)result) || !v4 )
  {
    *(_DWORD *)(v6 + 56) = 5;
  }
  else
  {
    v7 = *(_QWORD *)v6;
    if ( !*(_QWORD *)v6 )
    {
      *(_DWORD *)(v6 + 12) = -1;
LABEL_6:
      *(_DWORD *)(v6 + 56) = 3;
      return result;
    }
    if ( !*(_DWORD *)(v7 + 48) )
      goto LABEL_6;
    v8 = v7 + 8;
    if ( !v8 )
    {
      *(_DWORD *)(v6 + 12) = -1;
      *(_DWORD *)(v6 + 56) = 4;
      return result;
    }
    v9 = (void *)DataFile__sub_14026AC20((_QWORD *)(v8 + 8), "wmb", 0);
    if ( v9 )
    {
      Create_t::Invalidate(&a1);
      Matrix4x4::InitIndentity(&set_info.m_mat);
      v10 = 0;
      Vector3Aligned::sub_7FF696E25E40(&set_info.m_vPosition);
      Vector3Aligned::sub_7FF696E25E40(&set_info.m_vRotation);
      Vector3Aligned::sub_7FF696E25E40(&set_info.m_vScale);
      *(_QWORD *)&set_info.m_dwSetType = 0i64;
      *(_QWORD *)&set_info.m_i0x078 = 0i64;
      set_info.m_i0x080 = -1;
      set_info.m_i0x084 = 0;
      set_info.m_i0x088 = 1;
      set_info.m_i0x08C = -1;
      Vector3Aligned::Copy(&set_info.m_vPosition, (Vector3Aligned *)(v6 + 0x10));
      Vector3Aligned::sub_140265E60((unsigned __int64)&set_info.m_vRotation);
      Vector3Aligned::sub_140265E60((unsigned __int64)&set_info.m_vScale);
      set_info.m_i0x080 = *(_DWORD *)(v6 + 8);
      a1.m_ObjectIds[1] = 0x90001;
      a1.m_pSetInfo = &set_info;
      a1.m_szName = "MapInstance";
      a1.m_ObjectIds[0] = 0x90001;
      a1.m_dwFlags = 0x40000000;
      a1.m_pWMB = v9;
      a1.m_pDatBuffers = (void *)(v8 + 8);
      a1.m_pBXM = (void *)CObjReadManager::Work::QueryFilePointer((__int64 *)(v8 + 8), "ObjectParam.bxm");
      result = (__int64)CSceneEntitySystem::CreateEntity(&g_pSceneEntitySystem, &a1);
      *(_QWORD *)(v6 + 0x28) = result;
      if ( !result )
        return result;
      if ( v5 )
      {
        v11 = 0i64;
        while ( *v5 != -1 )
        {
          ++v11;
          v5 += 3;
          if ( v11 >= 14 )
            goto LABEL_21;
        }
        *v5 = *(_DWORD *)(v6 + 8);
        if ( stru_14102A000.m_ObjectId != 1 || (qword_1410297C0 & 0x80u) != 0i64 )
          v10 = 0x3F800000;
        v5[1] = v10;
        v5[2] = 0;
      }
LABEL_21:
      *(_QWORD *)(v6 + 48) = CEntityInfo::GetParent(*(CEntityInfo **)(v6 + 40));
      *(_DWORD *)(v6 + 32) = 0;
      *(_DWORD *)(v6 + 36) = 1;
      *(_DWORD *)(v6 + 60) = 1;
    }
    if ( ((*(_DWORD *)v8 & 0xF0000) - 0x20000) & 0xFFFDFFFF )
    {
      v12 = sub_1407DA720(*(_DWORD *)v8);
      v13 = v12;
      if ( v12 )
      {
        if ( *(_DWORD *)v12 == 1 )
        {
          Vector3Aligned::Copy((Vector3Aligned *)v12 + 1, (Vector3Aligned *)(v6 + 16));
          *((_DWORD *)v13 + 8) = 0;
          *((_DWORD *)v13 + 10) = 0;
          *((_DWORD *)v13 + 34) = 0;
          *(_DWORD *)v13 = 2;
        }
      }
    }
    result = sub_1403D1A60((__int64)&unk_141274460, v8);
    *(_DWORD *)(v6 + 56) = 3;
  }
  return result;
}