send more blocks on chunk loading and not later when the chunk neighbor is set

FactoryCraft/Chunk.cpp

@@ -238,6 +238,11 @@ bool Chunk::isVisible(int index) const
                         if (pos.y >= CHUNK_SIZE) pos.y -= CHUNK_SIZE;
                         n = zNeighbours[d]->zBlockAt(pos);
                     }
+                    else if (pos.z >= 0 && pos.z < WORLD_HEIGHT && d < 4
+                             && !zNeighbours[d])
+                    {
+                        return 1;
+                    }
                     if (n.isA()
                         && (((Block*)n)->isPassable()
                             || ((Block*)n)->isTransparent()))

FactoryCraft/Dimension.cpp

@@ -261,7 +261,6 @@ void Dimension::thread()
             std::cout << "100000 light updates needed " << time << " seconds\n";
             time = 0;
             index = 0;
-            Sleep(250);
             messer.messungStart();
         }
     }