you know what, it's an improvement

src/main/java/com/hbm/hrist/ConDbg.java

@@ -35,7 +35,7 @@ public class ConDbg {
 				
 				int color = line.hashCode() & 0xFFFFFF;
 				
-				ParticleUtil.spawnDroneLine(world, x, y, z, dx, dy, dz, color, true);
+				ParticleUtil.spawnDroneLine(world, x, y, z, dx, dy, dz, !line.valid ? 0xff0000 : color, true);
 			}
 		}
 	}

src/main/java/com/hbm/hrist/ConduitLine.java

@@ -4,10 +4,14 @@ import java.util.HashSet;
 import java.util.Set;
 
 import com.hbm.hrist.ConduitPiece.ConnectionDefinition;
+import com.hbm.hrist.ConduitSpace.ConduitWorld;
+
+import net.minecraft.world.World;
 
 /** Generated out of multiple ConnectionDefinitions to form a straight segment, ends at a branch */
 public class ConduitLine {
 
+	public World world;
 	protected boolean valid = true;
 	public LineEndpoint[] connectedTo = new LineEndpoint[2]; // a sausage always has two ends
 	public Set<ConnectionDefinition> constructedFrom = new HashSet();
@@ -16,6 +20,10 @@ public class ConduitLine {
 	public double cachedDistance = 0;
 	public boolean hasChanged = true;
 	
+	public ConduitLine(World world) {
+		this.world = world;
+	}
+	
 	public void setChanged() { this.hasChanged = true; }
 	
 	public double getDistance() {
@@ -30,11 +38,14 @@ public class ConduitLine {
 	public void invalidate() { this.valid = false; }
 	
 	public void destroy() {
+		ConduitWorld cWorld = ConduitSpace.worlds.get(world);
 		for(ConnectionDefinition def : constructedFrom) {
 			if(def.getLine() == this) {
 				def.setLine(null);
+				if(cWorld != null && def.parent.valid) cWorld.orphans.add(def);
 			}
 		}
+		this.constructedFrom.clear();
 		this.invalidate();
 	}
 	

src/main/java/com/hbm/hrist/ConduitPiece.java

@@ -6,25 +6,20 @@ import com.hbm.util.fauxpointtwelve.DirPos;
 public class ConduitPiece {
 
 	protected boolean valid = true;
-	
-	// definitions and lines are always 1:1, definition of index 0 is associated with line of index 0
-	// could have probably solved this with a new class, now that i think of it
 	public ConnectionDefinition[] definitions;
-	public ConduitLine[] liveConnections;
 	
 	public ConduitPiece(ConnectionDefinition... defs) {
 		definitions = defs;
 		for(ConnectionDefinition def : defs) def.withParent(this);
-		liveConnections = new ConduitLine[defs.length];
 	}
 	
 	public boolean isValid() { return this.valid; }
 	
-	// if a piece goes offline, the entire connection dies with it ad has to be recalculated out of the surviving pieces
+	// if a piece goes offline, the entire connection dies with it and has to be recalculated out of the surviving pieces
 	public void invalidate() {
 		this.valid = false;
-		for(ConduitLine con : this.liveConnections) {
-			if(con != null) con.destroy();
+		for(ConnectionDefinition def : this.definitions) {
+			if(def.liveConnection != null) def.liveConnection.destroy();
 		}
 	}
 	
@@ -45,6 +40,7 @@ public class ConduitPiece {
 		public ConduitPiece parent;
 		public final DirPos[] connectors = new DirPos[2];
 		public final double distance;
+		public ConduitLine liveConnection;
 		
 		public ConnectionDefinition(DirPos start, DirPos end) {
 			this(start, end, start.distanceTo(end));
@@ -62,18 +58,11 @@ public class ConduitPiece {
 		}
 		
 		public ConduitLine getLine() {
-			if(parent == null) throw new IllegalStateException("Connection def has been initialized with no parent!"); // never happens
-			for(int i = 0; i < parent.definitions.length; i++) {
-				if(parent.definitions[i] == this) return parent.liveConnections[i];
-			}
-			return null;
+			return liveConnection;
 		}
 		
 		public void setLine(ConduitLine line) {
-			if(parent == null) throw new IllegalStateException("Connection def has been initialized with no parent!"); // never happens
-			for(int i = 0; i < parent.definitions.length; i++) {
-				if(parent.definitions[i] == this) this.parent.liveConnections[i] = line;
-			}
+			this.liveConnection = line;
 		}
 	}
 }

src/main/java/com/hbm/hrist/ConduitSpace.java

@@ -20,7 +20,7 @@ public class ConduitSpace {
 	public static void pushPiece(World world, ConduitPiece piece, BlockPos core) {
 		ConduitWorld cWorld = worlds.get(world);
 		if(cWorld == null) {
-			cWorld = new ConduitWorld();
+			cWorld = new ConduitWorld(world);
 			worlds.put(world, cWorld);
 		}
 		cWorld.push(piece, core);
@@ -40,6 +40,8 @@ public class ConduitSpace {
 	
 	public static class ConduitWorld {
 		
+		public World world;
+		
 		/** Maps conduit core pos to the actual conduit piece logical unit, for access of the conduit blocks */
 		public Map<BlockPos, ConduitPiece> pieces = new HashMap();
 		/** Maps a connection pos to a conduit piece, used for calculating connections.
@@ -48,6 +50,10 @@ public class ConduitSpace {
 		/** Set of all definitions not yet part of a line */
 		public Set<ConnectionDefinition> orphans = new LinkedHashSet();
 		
+		public ConduitWorld(World world) {
+			this.world = world;
+		}
+		
 		public void push(ConduitPiece piece, BlockPos core) {
 			pieces.put(core, piece);
 			
@@ -97,9 +103,10 @@ public class ConduitSpace {
 						
 						line = orphan.getLine();
 						// if the current line is null
-						if(line == null) {
+						if(line == null || !line.valid) {
 							if(connectedDef.connectors[0].equals(connection) || connectedDef.connectors[1].equals(connection)) {
 								orphan.setLine(connectedLine);
+								connectedLine.constructedFrom.add(orphan);
 							}
 						// if not, merge
 						} else {
@@ -119,7 +126,7 @@ public class ConduitSpace {
 				}
 				
 				if(orphan.getLine() == null) {
-					ConduitLine newLine = new ConduitLine();
+					ConduitLine newLine = new ConduitLine(world);
 					orphan.setLine(newLine);
 					newLine.constructedFrom.add(orphan);
 					newLine.setChanged();