slowly tearing my skin off

src/main/java/com/hbm/blocks/ModBlocks.java

@@ -22,7 +22,8 @@ import com.hbm.blocks.network.*;
 import com.hbm.blocks.rail.*;
 import com.hbm.blocks.test.*;
 import com.hbm.blocks.turret.*;
-import com.hbm.hrist.BlockConduit;
+import com.hbm.hrist.BlockConduitBend;
+import com.hbm.hrist.BlockConduitStraight;
 import com.hbm.items.block.*;
 import com.hbm.items.bomb.ItemPrototypeBlock;
 import com.hbm.items.special.ItemOreBlock;
@@ -1238,6 +1239,7 @@ public class ModBlocks {
 	public static Material materialGas = new MaterialGas();
 	
 	public static Block conduit_straight;
+	public static Block conduit_bend;
 
 	private static void initializeBlock() {
 
@@ -2390,7 +2392,8 @@ public class ModBlocks {
 
 		logic_block = new LogicBlock().setBlockName("logic_block").setBlockTextureName(RefStrings.MODID + ":logic_block");
 
-		conduit_straight = new BlockConduit().setBlockName("conduit_straight").setBlockTextureName(RefStrings.MODID + ":block_steel");
+		conduit_straight = new BlockConduitStraight().setBlockName("conduit_straight").setBlockTextureName(RefStrings.MODID + ":block_steel");
+		conduit_bend = new BlockConduitBend().setBlockName("conduit_bend").setBlockTextureName(RefStrings.MODID + ":block_steel");
 	}
 
 	private static void registerBlock() {
@@ -3546,6 +3549,7 @@ public class ModBlocks {
 		register(logic_block);
 
 		register(conduit_straight);
+		register(conduit_bend);
 	}
 
 	private static void register(Block b) {

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

@@ -0,0 +1,56 @@
+package com.hbm.hrist;
+
+import com.hbm.blocks.BlockDummyable;
+import com.hbm.hrist.ConduitPiece.ConnectionDefinition;
+import com.hbm.util.fauxpointtwelve.BlockPos;
+import com.hbm.util.fauxpointtwelve.DirPos;
+
+import net.minecraft.block.Block;
+import net.minecraft.block.material.Material;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.world.World;
+import net.minecraftforge.common.util.ForgeDirection;
+
+// you can think of it like a pipeline
+public class BlockConduitBend extends BlockDummyable {
+
+	public BlockConduitBend() {
+		super(Material.ground);
+	}
+
+	@Override public TileEntity createNewTileEntity(World world, int meta) { return null; }
+	@Override public int[] getDimensions() { return new int[] {0, 0, 4, 0, 4, 0}; }
+	@Override public int getOffset() { return 0; }
+
+	@Override
+	public void onBlockAdded(World world, int x, int y, int z) {
+		super.onBlockAdded(world, x, y, z);
+		int meta = world.getBlockMetadata(x, y, z);
+		
+		if(meta >= 12) {
+			ConduitPiece piece = this.getPiece(world, x, y, z, meta);
+			ConduitSpace.pushPiece(world, piece, new BlockPos(x, y, z));
+		}
+	}
+
+	@Override
+	public void breakBlock(World world, int x, int y, int z, Block b, int meta) {
+		super.breakBlock(world, x, y, z, b, meta);
+		
+		if(meta >= 12) {
+			ConduitSpace.popPiece(world, new BlockPos(x, y, z));
+		}
+	}
+	
+	public ConduitPiece getPiece(World world, int x, int y, int z, int meta) {
+		ForgeDirection dir = ForgeDirection.getOrientation(meta - 10);
+		ForgeDirection rot = dir.getRotation(ForgeDirection.UP);
+		DirPos d0 = new DirPos(
+				x + 0.5 + rot.offsetX * 0.5 + dir.offsetX * 0.5, y,
+				z + 0.5 + rot.offsetZ * 0.5 + dir.offsetZ * 0.5, dir);
+		DirPos d1 = new DirPos(
+				x + 0.5 + rot.offsetX * 4.5 - dir.offsetX * 3.5, y,
+				z + 0.5 + rot.offsetZ * 4.5 - dir.offsetZ * 3.5, rot);
+		return new ConduitPiece(new ConnectionDefinition(d0, d1));
+	}
+}

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

@@ -12,9 +12,9 @@ import net.minecraft.world.World;
 import net.minecraftforge.common.util.ForgeDirection;
 
 // you can think of it like a pipeline
-public class BlockConduit extends BlockDummyable {
+public class BlockConduitStraight extends BlockDummyable {
 
-	public BlockConduit() {
+	public BlockConduitStraight() {
 		super(Material.ground);
 	}
 

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

@@ -2,6 +2,7 @@ package com.hbm.hrist;
 
 import java.util.Map.Entry;
 
+import com.hbm.hrist.ConduitPiece.ConnectionDefinition;
 import com.hbm.hrist.ConduitSpace.ConduitWorld;
 import com.hbm.util.ParticleUtil;
 import com.hbm.util.fauxpointtwelve.BlockPos;
@@ -11,24 +12,31 @@ import net.minecraft.world.World;
 /** Test and debugging tools */
 public class ConDbg {
 	
-	public static void debugVisualsWorld(World world) {
+	public static void debugUpdateWorld(World world) {
 		
 		ConduitWorld cWorld = ConduitSpace.worlds.get(world);
 		if(cWorld == null) return;
 		
 		for(Entry<BlockPos, ConduitPiece> entry : cWorld.pieces.entrySet()) {
 			
-			BlockPos pos = entry.getValue().definitions[0].connectors[0];
-			BlockPos nex = entry.getValue().definitions[0].connectors[1];
+			for(ConnectionDefinition def : entry.getValue().definitions) {
+				ConduitLine line = def.getLine();
+				if(line == null) continue;
 				
-			double x = pos.getX();
-			double y = pos.getY() + 0.5;
-			double z = pos.getZ();
-			double dx = nex.getX() - pos.getX();
-			double dy = nex.getY() - pos.getY();
-			double dz = nex.getZ() - pos.getZ();
+				BlockPos pos = def.connectors[0];
+				BlockPos nex = def.connectors[1];
 	
-			ParticleUtil.spawnDroneLine(world, x, y, z, dx, dy, dz, 0xff0000, true);
+				double x = pos.getX();
+				double y = pos.getY() + 0.5;
+				double z = pos.getZ();
+				double dx = nex.getX() - pos.getX();
+				double dy = nex.getY() - pos.getY();
+				double dz = nex.getZ() - pos.getZ();
+				
+				int color = line.hashCode() & 0xFFFFFF;
+				
+				ParticleUtil.spawnDroneLine(world, x, y, z, dx, dy, dz, color, true);
+			}
 		}
 	}
 }

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

@@ -1,18 +0,0 @@
-package com.hbm.hrist;
-
-/** Generated out of multiple ConnectionDefinitions to form a straight segment, ends at a branch */
-public class ConduitConnection {
-
-	protected boolean valid = true;
-	public ConduitConnection[] connectedTo = new ConduitConnection[2]; // a sausage always has two ends
-	public int stateKeepAlive; // unclear whether that's a good idea, since it requires the traveling object to be chunk loaded
-	public ConnectionStatus state = ConnectionStatus.OKAY;
-	
-	public boolean isValid() { return this.valid; }
-	public void invalidate() { this.valid = false; }
-	
-	public static enum ConnectionStatus {
-		OKAY,
-		BLOCKED
-	}
-}

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

@@ -0,0 +1,53 @@
+package com.hbm.hrist;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import com.hbm.hrist.ConduitPiece.ConnectionDefinition;
+
+/** Generated out of multiple ConnectionDefinitions to form a straight segment, ends at a branch */
+public class ConduitLine {
+
+	protected boolean valid = true;
+	public LineEndpoint[] connectedTo = new LineEndpoint[2]; // a sausage always has two ends
+	public Set<ConnectionDefinition> constructedFrom = new HashSet();
+	public ConnectionStatus state = ConnectionStatus.ONLINE;
+	
+	public double cachedDistance = 0;
+	public boolean hasChanged = true;
+	
+	public void setChanged() { this.hasChanged = true; }
+	
+	public double getDistance() {
+		if(this.hasChanged) {
+			this.cachedDistance = 0;
+			for(ConnectionDefinition def : constructedFrom) this.cachedDistance += def.distance;
+		}
+		return this.cachedDistance;
+	}
+	
+	public boolean isValid() { return this.valid; }
+	public void invalidate() { this.valid = false; }
+	
+	public void destroy() {
+		for(ConnectionDefinition def : constructedFrom) {
+			if(def.getLine() == this) {
+				def.setLine(null);
+			}
+		}
+		this.invalidate();
+	}
+	
+	public static enum ConnectionStatus {
+		ONLINE,
+		OFFLINE
+	}
+	
+	public static class LineEndpoint {
+		public ConduitLine[] connections;
+		
+		public LineEndpoint(ConduitLine... connections) {
+			this.connections = connections;
+		}
+	}
+}

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

@@ -6,13 +6,16 @@ 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 ConduitConnection[] liveConnections;
+	public ConduitLine[] liveConnections;
 	
 	public ConduitPiece(ConnectionDefinition... defs) {
 		definitions = defs;
 		for(ConnectionDefinition def : defs) def.withParent(this);
-		liveConnections = new ConduitConnection[defs.length];
+		liveConnections = new ConduitLine[defs.length];
 	}
 	
 	public boolean isValid() { return this.valid; }
@@ -20,17 +23,28 @@ public class ConduitPiece {
 	// if a piece goes offline, the entire connection dies with it ad has to be recalculated out of the surviving pieces
 	public void invalidate() {
 		this.valid = false;
-		for(ConduitConnection con : this.liveConnections) {
-			if(con != null) con.invalidate();
+		for(ConduitLine con : this.liveConnections) {
+			if(con != null) con.destroy();
 		}
 	}
 	
+	/** if it's a switch, then we don't want a line connection there */
+	public boolean hasMultipleConnections(DirPos pos) {
+		int count = 0;
+		for(ConnectionDefinition def : definitions) {
+			if(def.connectors[0].equals(pos)) count++;
+			if(def.connectors[1].equals(pos)) count++;
+			if(count > 1) return true;
+		}
+		return false;
+	}
+	
 	/** Describes each branch or connecting line on a piece, building block and not a working instance */
 	public static class ConnectionDefinition {
 		
 		public ConduitPiece parent;
-		public DirPos[] connectors = new DirPos[2];
-		double distance;
+		public final DirPos[] connectors = new DirPos[2];
+		public final double distance;
 		
 		public ConnectionDefinition(DirPos start, DirPos end) {
 			this(start, end, start.distanceTo(end));
@@ -46,5 +60,20 @@ public class ConduitPiece {
 			this.parent = parent;
 			return this;
 		}
+		
+		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;
+		}
+		
+		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;
+			}
+		}
 	}
 }

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

@@ -1,7 +1,10 @@
 package com.hbm.hrist;
 
 import java.util.HashMap;
+import java.util.Iterator;
+import java.util.LinkedHashSet;
 import java.util.Map;
+import java.util.Set;
 
 import com.hbm.hrist.ConduitPiece.ConnectionDefinition;
 import com.hbm.util.fauxpointtwelve.BlockPos;
@@ -29,12 +32,21 @@ public class ConduitSpace {
 		cWorld.pop(cWorld.pieces.get(core), core);
 	}
 	
+	public static void updateWorld(World world) {
+		ConduitWorld cWorld = worlds.get(world);
+		if(cWorld == null) return;
+		cWorld.update();
+	}
+	
 	public static class ConduitWorld {
 		
 		/** Maps conduit core pos to the actual conduit piece logical unit, for access of the conduit blocks */
-		public static Map<BlockPos, ConduitPiece> pieces = new HashMap();
-		/** Maps a connection pos to a conduit piece, used for calculating connections */
-		public static Map<DirPos, ConduitPiece> connections = new HashMap();
+		public Map<BlockPos, ConduitPiece> pieces = new HashMap();
+		/** Maps a connection pos to a conduit piece, used for calculating connections.
+		 * One position can correspond to multiple connection defs, so we have to store the entire piece. */
+		public Map<DirPos, ConduitPiece> connections = new HashMap();
+		/** Set of all definitions not yet part of a line */
+		public Set<ConnectionDefinition> orphans = new LinkedHashSet();
 		
 		public void push(ConduitPiece piece, BlockPos core) {
 			pieces.put(core, piece);
@@ -42,9 +54,12 @@ public class ConduitSpace {
 			// for branches, there's some repetition in the keys, but we don't care about that
 			// since this maps to the PIECE, not the CONNECTION
 			for(ConnectionDefinition def : piece.definitions) {
-				pieces.put(def.connectors[0], piece);
-				pieces.put(def.connectors[1], piece);
+				connections.put(def.connectors[0], piece);
+				connections.put(def.connectors[1], piece);
+				orphans.add(def);
 			}
+			
+			for(ConnectionDefinition con : piece.definitions) orphans.add(con);
 		}
 		
 		public void pop(ConduitPiece piece, BlockPos core) {
@@ -55,6 +70,63 @@ public class ConduitSpace {
 				pieces.remove(def.connectors[0]);
 				pieces.remove(def.connectors[1]);
 			}
+			
+			for(ConnectionDefinition con : piece.definitions) orphans.remove(con);
+			
+			piece.invalidate();
+		}
+		
+		public void update() {
+			
+			Iterator<ConnectionDefinition> it = orphans.iterator();
+			
+			while(it.hasNext()) {
+				ConnectionDefinition orphan = it.next();
+				ConduitLine line = orphan.getLine();
+				
+				for(DirPos pos : orphan.connectors) {
+					DirPos connection = pos.flip();
+					ConduitPiece connectedPiece = connections.get(connection);
+					if(connectedPiece == null) continue; // if no piece is actually connected, skip
+					if(connectedPiece == orphan.parent) continue; // no self-fellating
+					if(connectedPiece.hasMultipleConnections(connection)) continue; // if this connection leads to a switch, skip
+					
+					for(ConnectionDefinition connectedDef : connectedPiece.definitions) {
+						ConduitLine connectedLine = connectedDef.getLine();
+						if(connectedLine == null) continue;
+						
+						line = orphan.getLine();
+						// if the current line is null
+						if(line == null) {
+							if(connectedDef.connectors[0].equals(connection) || connectedDef.connectors[1].equals(connection)) {
+								orphan.setLine(connectedLine);
+							}
+						// if not, merge
+						} else {
+							// larger one eats the smaller one for performance
+							ConduitLine larger = line.constructedFrom.size() > connectedLine.constructedFrom.size() ? line : connectedLine;
+							ConduitLine smaller = line.constructedFrom.size() > connectedLine.constructedFrom.size() ? connectedLine : line;
+							
+							larger.constructedFrom.addAll(smaller.constructedFrom);
+							for(ConnectionDefinition smallerDef : smaller.constructedFrom) {
+								smallerDef.setLine(larger);
+							}
+							smaller.constructedFrom.clear();
+							larger.setChanged();
+							smaller.invalidate();
+						}
+					}
+				}
+				
+				if(orphan.getLine() == null) {
+					ConduitLine newLine = new ConduitLine();
+					orphan.setLine(newLine);
+					newLine.constructedFrom.add(orphan);
+					newLine.setChanged();
+				}
+			}
+			
+			orphans.clear();
 		}
 	}
 }

src/main/java/com/hbm/main/ModEventHandler.java

@@ -25,6 +25,7 @@ import com.hbm.handler.BossSpawnHandler;
 import com.hbm.handler.EntityEffectHandler;
 import com.hbm.hazard.HazardSystem;
 import com.hbm.hrist.ConDbg;
+import com.hbm.hrist.ConduitSpace;
 import com.hbm.interfaces.IBomb;
 import com.hbm.interfaces.Spaghetti;
 import com.hbm.inventory.recipes.loader.SerializableRecipe;
@@ -612,8 +613,10 @@ public class ModEventHandler {
 
 				EntityRailCarBase.updateMotion(event.world);
 
+				// Connecton Update
+				ConduitSpace.updateWorld(event.world);
 				// Connection Debug Tools
-				ConDbg.debugVisualsWorld(event.world);
+				ConDbg.debugUpdateWorld(event.world);
 			}
 		}
 

src/main/java/com/hbm/util/fauxpointtwelve/DirPos.java

@@ -33,6 +33,41 @@ public class DirPos extends BlockPos {
 		}
 	}
 	
+	public DirPos flip() {
+		return new DirPos(this.getX(), this.getY(), this.getZ(), this.getDir().getOpposite());
+	}
+	
+	/** Useful for the opposing piece of a connector */
+	public DirPos flipWithOffset() {
+		ForgeDirection dir = this.getDir();
+		return new DirPos(this.getX() + dir.offsetX, this.getY() + dir.offsetY, this.getZ() + dir.offsetZ, dir.getOpposite());
+	}
+	
 	public ForgeDirection getDir() { return this.dir; }
 	public BlockPos toPos() { return new BlockPos(x, y, z); }
+	
+	@Override
+	public int hashCode() {
+		return DimPos.getIdentity(this.getX(), this.getY(), this.getZ(), this.getDir().ordinal());
+	}
+
+	@Override
+	public boolean equals(Object toCompare) {
+		if(this == toCompare) {
+			return true;
+		} else if(!(toCompare instanceof BlockPos)) {
+			return false;
+		} else {
+			DirPos pos = (DirPos) toCompare;
+			if(this.getX() != pos.getX()) {
+				return false;
+			} else if(this.getY() != pos.getY()) {
+				return false;
+			} else if(this.getZ() != pos.getZ()) {
+				return false;
+			} else {
+				return this.getDir() == pos.getDir();
+			}
+		}
+	}
 }