Fixed PocketBuilder and More

1. Changed DungeonSchematic to use an external instance of Random rather
than initializing its own.
2. Created the Pair class, a strongly-typed tuple that was needed in
PocketBuilder.
3. Added a missing calculation in NewDimData for setting the packDepth
field during dungeon initialization.
4. Finished code missing in PocketBuilder. Changes listed above were
needed for this.

StevenDimDoors/mod_pocketDim/core/NewDimData.java

@@ -9,6 +9,7 @@ import java.util.TreeMap;
 import net.minecraft.world.World;
 import StevenDimDoors.mod_pocketDim.DDProperties;
 import StevenDimDoors.mod_pocketDim.dungeon.DungeonData;
+import StevenDimDoors.mod_pocketDim.dungeon.pack.DungeonPack;
 import StevenDimDoors.mod_pocketDim.util.Point4D;
 
 public abstract class NewDimData implements Serializable
@@ -460,6 +461,39 @@ public abstract class NewDimData implements Serializable
 		this.origin = link.destination();
 		this.orientation = orientation;
 		this.dungeon = dungeon;
+		this.packDepth = calculatePackDepth(parent, dungeon);
+	}
+	
+	private static int calculatePackDepth(NewDimData parent, DungeonData current)
+	{
+		DungeonData predecessor = parent.dungeon();
+		if (current == null)
+		{
+			throw new IllegalArgumentException("current cannot be null.");
+		}
+		if (predecessor == null)
+		{
+			return 1;
+		}
+		
+		DungeonPack predOwner = predecessor.dungeonType().Owner;
+		DungeonPack currentOwner = current.dungeonType().Owner;
+		if (currentOwner == null)
+		{
+			return 1;
+		}
+		if (predOwner == null)
+		{
+			return 1;
+		}
+		if (predOwner == currentOwner)
+		{
+			return parent.packDepth + 1;
+		}
+		else
+		{
+			return 1;
+		}
 	}
 
 	public void initializePocket(int originX, int originY, int originZ, int orientation, IDimLink link)

StevenDimDoors/mod_pocketDim/dungeon/DungeonSchematic.java

@@ -167,15 +167,14 @@ public class DungeonSchematic extends Schematic {
 		return new DungeonSchematic(Schematic.copyFromWorld(world, x, y, z, width, height, length, doCompactBounds));
 	}
 
-	public void copyToWorld(World world, Point3D pocketCenter, int dungeonOrientation, IDimLink entryLink)
+	public void copyToWorld(World world, Point3D pocketCenter, int dungeonOrientation, IDimLink entryLink, Random random)
 	{
 		//TODO: This function is an improvised solution so we can get the release moving. In the future,
 		//we should generalize block transformations and implement support for them at the level of Schematic,
 		//then just use that support from DungeonSchematic instead of making this local fix.
 		//It might be easiest to support transformations using a WorldOperation
 		
-		final int turnAngle = dungeonOrientation - orientation;
-		
+		final int turnAngle = dungeonOrientation - orientation;		
 		
 		int index;
 		int count;
@@ -222,18 +221,11 @@ public class DungeonSchematic extends Schematic {
 			world.setBlockTileEntity(pocketPoint.getX(), pocketPoint.getY(), pocketPoint.getZ(), TileEntity.createAndLoadEntity(tileTag));
 		}
 		
-		setUpDungeon(PocketManager.getDimensionData(world), world, pocketCenter, turnAngle, entryLink);
+		setUpDungeon(PocketManager.getDimensionData(world), world, pocketCenter, turnAngle, entryLink, random);
 	}
 	
-	private void setUpDungeon(NewDimData dimension, World world, Point3D pocketCenter, int turnAngle, IDimLink entryLink)
+	private void setUpDungeon(NewDimData dimension, World world, Point3D pocketCenter, int turnAngle, IDimLink entryLink, Random random)
 	{
-		//The following Random initialization code is based on code from ChunkProviderGenerate.
-		//It makes our generation depend on the world seed.
-		Random random = new Random(world.getSeed());
-        long factorA = random.nextLong() / 2L * 2L + 1L;
-        long factorB = random.nextLong() / 2L * 2L + 1L;
-        random.setSeed(pocketCenter.getX() * factorB + pocketCenter.getZ() * factorA ^ world.getSeed());
-		
         //Transform dungeon corners
         Point3D minCorner = new Point3D(0, 0, 0);
         Point3D maxCorner = new Point3D(width - 1, height - 1, length - 1);

StevenDimDoors/mod_pocketDim/util/Pair.java

@@ -0,0 +1,26 @@
+package StevenDimDoors.mod_pocketDim.util;
+
+public class Pair<P, Q>
+{
+	//Pair is an implementation of a 2-tuple with generic parameters for strongly-typed elements.
+	//It's used instead of Minecraft's Tuple type because Tuple doesn't have strongly-typed elements.
+	
+	private P first;
+	private Q second;
+	
+	public Pair(P first, Q second)
+	{
+		this.first = first;
+		this.second = second;
+	}
+	
+	public P getFirst()
+	{
+		return first;
+	}
+	
+	public Q getSecond()
+	{
+		return second;
+	}
+}

StevenDimDoors/mod_pocketDim/world/PocketBuilder.java

@@ -1,9 +1,9 @@
 package StevenDimDoors.mod_pocketDim.world;
 
-import java.util.HashMap;
 import java.util.Random;
 
 import net.minecraft.block.Block;
+import net.minecraft.util.MathHelper;
 import net.minecraft.world.World;
 import net.minecraft.world.chunk.Chunk;
 import net.minecraft.world.chunk.storage.ExtendedBlockStorage;
@@ -19,6 +19,7 @@ import StevenDimDoors.mod_pocketDim.dungeon.pack.DungeonPackConfig;
 import StevenDimDoors.mod_pocketDim.helpers.DungeonHelper;
 import StevenDimDoors.mod_pocketDim.helpers.yCoordHelper;
 import StevenDimDoors.mod_pocketDim.schematic.BlockRotator;
+import StevenDimDoors.mod_pocketDim.util.Pair;
 import StevenDimDoors.mod_pocketDim.util.Point4D;
 
 public class PocketBuilder
@@ -35,25 +36,6 @@ public class PocketBuilder
 
 	private PocketBuilder() { }
 
-	public static boolean initializeDestination(IDimLink link, DDProperties properties)
-	{
-		if (link.hasDestination())
-		{
-			return true;
-		}
-
-		//Check the destination type and respond accordingly
-		switch (link.linkType())
-		{
-			case IDimLink.TYPE_DUNGEON:
-				return generateNewDungeonPocket(link, properties);
-			case IDimLink.TYPE_POCKET:
-				return generateNewPocket(link, properties);
-			default:
-				throw new IllegalArgumentException("link has an unrecognized link type.");
-		}
-	}
-
 	public static boolean generateNewDungeonPocket(IDimLink link, DDProperties properties)
 	{
 		if (link == null)
@@ -93,31 +75,35 @@ public class PocketBuilder
 				return false;
 			}
 			
-			/* This code is currently wrong. It's missing the following things:
-			 * 1. Calculate the destination point for real. That includes adding door noise if needed.
-			 * 2. Receive the DungeonData from selectDungeon()
-			 * 3. The function signature for DungeonSchematic.copyToWorld() has to be rewritten.
-			 */
-			
 			//Choose a dungeon to generate
-			DungeonSchematic schematic = selectDungeon(dimension, random, properties);
-			
-			if (schematic == null)
+			Pair<DungeonData, DungeonSchematic> pair = selectDungeon(dimension, random, properties);
+			if (pair == null)
 			{
 				System.err.println("Could not select a dungeon for generation!");
 				return false;
 			}
+			DungeonData dungeon = pair.getFirst();
+			DungeonSchematic schematic = pair.getSecond();
 			
 			//Calculate the destination point
+			DungeonPackConfig packConfig = dungeon.dungeonType().Owner != null ? dungeon.dungeonType().Owner.getConfig() : null;
 			Point4D source = link.source();
-			int destinationY = yCoordHelper.adjustDestinationY(destination, world.getHeight(), schematic.getEntranceDoorLocation().getY(), schematic.getHeight());
-			int orientation = getDestinationOrientation(source);
-			destination.setY(destinationY);
+			int orientation = getDoorOrientation(source, properties);
+			Point3D destination;
+			
+			if (packConfig != null && packConfig.doDistortDoorCoordinates())
+			{
+				destination = calculateNoisyDestination(source, dimension, orientation);
+			}
+			else
+			{
+				destination = new Point3D(source.getX(), source.getY(), source.getZ());
+			}
+			
+			destination.setY( yCoordHelper.adjustDestinationY(destination.getY(), world.getHeight(), schematic.getEntranceDoorLocation().getY(), schematic.getHeight()) );
 			
 			//Generate the dungeon
-			DungeonPackConfig packConfig = dungeon.dungeonType().Owner != null ? dungeon.dungeonType().Owner.getConfig() : null;
-
-			schematic.copyToWorld(world, link, packConfig.doDistortDoorCoordinates());
+			schematic.copyToWorld(world, destination, orientation, link, random);
 			
 			//Finish up destination initialization
 			dimension.initializePocket(destination.getX(), destination.getY(), destination.getZ(), orientation, link);
@@ -131,7 +117,23 @@ public class PocketBuilder
 		}
 	}
 	
-	private static DungeonSchematic selectDungeon(NewDimData dimension, Random random, DDProperties properties)
+	private static Point3D calculateNoisyDestination(Point4D source, NewDimData dimension, int orientation)
+	{
+		int depth = dimension.packDepth();
+		int forwardNoise = MathHelper.getRandomIntegerInRange(random, -50 * depth, 150 * depth);
+		int sidewaysNoise = MathHelper.getRandomIntegerInRange(random, -10 * depth, 10 * depth);
+
+		//Rotate the link destination noise to point in the same direction as the door exit
+		//and add it to the door's location. Use EAST as the reference orientation since linkDestination
+		//is constructed as if pointing East.
+		Point3D linkDestination = new Point3D(forwardNoise, 0, sidewaysNoise);
+		Point3D sourcePoint = new Point3D(source.getX(), source.getY(), source.getZ());
+		Point3D zeroPoint = new Point3D(0, 0, 0);
+		BlockRotator.transformPoint(linkDestination, zeroPoint, orientation - BlockRotator.EAST_DOOR_METADATA, sourcePoint);
+		return linkDestination;
+	}
+
+	private static Pair<DungeonData, DungeonSchematic> selectDungeon(NewDimData dimension, Random random, DDProperties properties)
 	{
 		//We assume the dimension doesn't have a dungeon assigned
 		if (dimension.dungeon() != null)
@@ -157,7 +159,6 @@ public class PocketBuilder
 		{
 			//TODO: In the future, remove this dungeon from the generation lists altogether.
 			//That will have to wait until our code is updated to support that more easily.
-
 			try
 			{
 				System.err.println("Loading the default error dungeon instead...");
@@ -170,7 +171,7 @@ public class PocketBuilder
 				return null;
 			}
 		}
-		return schematic;
+		return new Pair<DungeonData, DungeonSchematic>(dungeon, schematic);
 	}
 	
 	private static DungeonSchematic loadAndValidateDungeon(DungeonData dungeon, DDProperties properties)
@@ -218,10 +219,25 @@ public class PocketBuilder
 		return generateNewPocket(link, DEFAULT_POCKET_SIZE, DEFAULT_POCKET_WALL_THICKNESS, properties);
 	}
 	
-	private static int getDestinationOrientation(Point4D source)
+	private static int getDoorOrientation(Point4D source, DDProperties properties)
 	{
-		// TODO Auto-generated method stub
-		return 0;
+		World world = DimensionManager.getWorld(source.getDimension());
+		if (world == null)
+		{
+			throw new IllegalStateException("The link's source world should be loaded!");
+		}
+
+		//Check if the block at that point is actually a door
+		int blockID = world.getBlockId(source.getX(), source.getY(), source.getZ());
+		if (blockID != properties.DimensionalDoorID && blockID != properties.WarpDoorID &&
+			blockID != properties.TransientDoorID)
+		{
+			throw new IllegalStateException("The link's source is not a door block. It should be impossible to traverse a rift without a door!");
+		}
+		
+		//Return the orientation portion of its metadata
+		int orientation = world.getBlockMetadata(source.getX(), source.getY(), source.getZ()) & 3;
+		return orientation;
 	}
 
 	public static boolean generateNewPocket(IDimLink link, int size, int wallThickness, DDProperties properties)
@@ -283,7 +299,7 @@ public class PocketBuilder
 			//Calculate the destination point
 			Point4D source = link.source();
 			int destinationY = yCoordHelper.adjustDestinationY(source.getY(), world.getHeight(), wallThickness + 1, size);
-			int orientation = getDestinationOrientation(source);
+			int orientation = getDoorOrientation(source, properties);
 			
 			//Build the actual pocket area
 			buildPocket(world, source.getX(), destinationY, source.getZ(), orientation, size, wallThickness, properties);