Some java practices.

• Use interfaces for variables unless the class itself is needed.
  (List list = new ArrayList())

• HexCraft/src/main/java/com/celestek/hexcraft/util/NetworkAnalyzer.java

  Line 236 in 6472b6a

  if (world.getBlock(tunnel.x, tunnel.y + 1, tunnel.z) instanceof BlockEnergyNodeCore)

  
  Maybe optimize getBlock calls a bit?

• HexCraft/src/main/java/com/celestek/hexcraft/util/NetworkAnalyzer.java

  Line 31 in 6472b6a

  cables = new ArrayList<HexDevice>() {

  
  This is exactly why hashsets exists. If you iterate over them use LinkedHashSets. But a Set always calls the equals function and hashcode which the object can override and compare. And this does not allow duplicates either.