+bool Environment::line_of_sight(v3f pos1, v3f pos2, v3s16 *p)
+{
+ // Iterate trough nodes on the line
+ voxalgo::VoxelLineIterator iterator(pos1 / BS, (pos2 - pos1) / BS);
+ do {
+ MapNode n = getMap().getNode(iterator.m_current_node_pos);
+
+ // Return non-air
+ if (n.param0 != CONTENT_AIR) {
+ if (p)
+ *p = iterator.m_current_node_pos;
+ return false;
+ }
+ iterator.next();
+ } while (iterator.m_current_index <= iterator.m_last_index);
+ return true;
+}
+