src/main/java/StevenDimDoors/mod_pocketDim/IChunkLoader.java

@@ -4,5 +4,6 @@ import net.minecraftforge.common.ForgeChunkManager.Ticket;
 
 public interface IChunkLoader 
 {
-	public void forceChunkLoading(Ticket ticket,int x, int z);
+	public boolean isInitialized();
+	public void initialize(Ticket ticket);
 }

src/main/java/StevenDimDoors/mod_pocketDim/helpers/ChunkLoaderHelper.java

@@ -1,47 +1,91 @@
 package StevenDimDoors.mod_pocketDim.helpers;
 
-import StevenDimDoors.mod_pocketDim.IChunkLoader;
-import StevenDimDoors.mod_pocketDim.mod_pocketDim;
-import StevenDimDoors.mod_pocketDim.core.NewDimData;
-import StevenDimDoors.mod_pocketDim.core.PocketManager;
-
-import cpw.mods.fml.common.event.FMLServerStartingEvent;
-
 import java.io.File;
 import java.util.List;
 
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.world.ChunkCoordIntPair;
 import net.minecraft.world.World;
 import net.minecraftforge.common.DimensionManager;
 import net.minecraftforge.common.ForgeChunkManager;
 import net.minecraftforge.common.ForgeChunkManager.LoadingCallback;
 import net.minecraftforge.common.ForgeChunkManager.Ticket;
+import net.minecraftforge.common.ForgeChunkManager.Type;
+import StevenDimDoors.experimental.BoundingBox;
+import StevenDimDoors.mod_pocketDim.IChunkLoader;
+import StevenDimDoors.mod_pocketDim.Point3D;
+import StevenDimDoors.mod_pocketDim.mod_pocketDim;
+import StevenDimDoors.mod_pocketDim.core.NewDimData;
+import StevenDimDoors.mod_pocketDim.core.PocketManager;
+import StevenDimDoors.mod_pocketDim.world.PocketBuilder;
+import cpw.mods.fml.common.event.FMLServerStartingEvent;
 
 public class ChunkLoaderHelper implements LoadingCallback 
 {
-
 	@Override
 	public void ticketsLoaded(List<Ticket> tickets, World world) 
 	{
 		for (Ticket ticket : tickets) 
 		{
-			int goldDimDoorX = ticket.getModData().getInteger("goldDimDoorX");
+			boolean loaded = false;
-			int goldDimDoorY = ticket.getModData().getInteger("goldDimDoorY");
+			int x = ticket.getModData().getInteger("goldDimDoorX");
-			int goldDimDoorZ = ticket.getModData().getInteger("goldDimDoorZ");
+			int y = ticket.getModData().getInteger("goldDimDoorY");
-			if(world.getBlockId(goldDimDoorX, goldDimDoorY, goldDimDoorZ) != mod_pocketDim.properties.GoldenDimensionalDoorID)
+			int z = ticket.getModData().getInteger("goldDimDoorZ");
+
+			if (world.getBlockId(x, y, z) == mod_pocketDim.properties.GoldenDimensionalDoorID)
+			{
+				IChunkLoader loader = (IChunkLoader) world.getBlockTileEntity(x, y, z);
+				if (!loader.isInitialized())
+				{
+					loader.initialize(ticket);
+					loaded = true;
+				}
+			}
+			if (!loaded)
 			{
 				ForgeChunkManager.releaseTicket(ticket);
 			}
-			else
+		}
+	}
+
+	public static Ticket createTicket(int x, int y, int z, World world)
+	{
+		NBTTagCompound data;
+		Ticket ticket = ForgeChunkManager.requestTicket(mod_pocketDim.instance, world, Type.NORMAL);
+		if (ticket != null)
+		{
+			data = ticket.getModData();
+			data.setInteger("goldDimDoorX", x);
+			data.setInteger("goldDimDoorY", y);
+			data.setInteger("goldDimDoorZ", z);
+		}
+		return ticket;
+	}
+
+	public static void forcePocketChunks(NewDimData pocket, Ticket ticket)
+	{
+		BoundingBox bounds = PocketBuilder.calculateDefaultBounds(pocket);
+		Point3D minCorner = bounds.minCorner();
+		Point3D maxCorner = bounds.maxCorner();
+		int minX = minCorner.getX() >> 4;
+		int minZ = minCorner.getZ() >> 4;
+		int maxX = maxCorner.getX() >> 4;
+		int maxZ = maxCorner.getZ() >> 4;
+		int chunkX;
+		int chunkZ;
+
+		for (chunkX = minX; chunkX <= maxX; chunkX++)
+		{
+			for (chunkZ = minZ; chunkZ <= maxZ; chunkZ++)
 			{
-				IChunkLoader tile = (IChunkLoader) world.getBlockTileEntity(goldDimDoorX, goldDimDoorY, goldDimDoorZ);
+				ForgeChunkManager.forceChunk(ticket, new ChunkCoordIntPair(chunkX, chunkZ));
-				tile.forceChunkLoading(ticket,goldDimDoorX,goldDimDoorZ);
 			}
 		}
 	}
 
 	public static void loadChunkForcedWorlds(FMLServerStartingEvent event)
 	{
-		for(NewDimData data : PocketManager.getDimensions())
+		for (NewDimData data : PocketManager.getDimensions())
 		{
 			if(data.isPocketDimension())
 			{

src/main/java/StevenDimDoors/mod_pocketDim/tileentities/TileEntityDimDoorGold.java

@@ -1,87 +1,95 @@
 package StevenDimDoors.mod_pocketDim.tileentities;
 
-import net.minecraft.world.ChunkCoordIntPair;
 import net.minecraftforge.common.ForgeChunkManager;
 import net.minecraftforge.common.ForgeChunkManager.Ticket;
-import net.minecraftforge.common.ForgeChunkManager.Type;
 import StevenDimDoors.mod_pocketDim.IChunkLoader;
-import StevenDimDoors.mod_pocketDim.mod_pocketDim;
+import StevenDimDoors.mod_pocketDim.core.NewDimData;
 import StevenDimDoors.mod_pocketDim.core.PocketManager;
-import StevenDimDoors.mod_pocketDim.util.Point4D;
+import StevenDimDoors.mod_pocketDim.helpers.ChunkLoaderHelper;
 import StevenDimDoors.mod_pocketDim.world.PocketBuilder;
 
 public class TileEntityDimDoorGold extends TileEntityDimDoor implements IChunkLoader
 {
 	private Ticket chunkTicket;
+	private boolean initialized = false;
 
 	@Override
 	public boolean canUpdate()
 	{
-		return true;
+		return !initialized;
+	}
+	
+	@Override
+	public boolean isInitialized()
+	{
+		return initialized;
 	}
 
 	@Override
 	public void updateEntity() 
-	{ // every tick?
+	{
-		if (PocketManager.getDimensionData(this.worldObj) != null &&
+		if (!initialized)
-				PocketManager.getDimensionData(this.worldObj).isPocketDimension() &&
-				!this.worldObj.isRemote)
 		{
-			if(PocketManager.getLink(this.xCoord,this.yCoord,this.zCoord,this.worldObj)==null)
+			initialize(null);
-			{
-				return;
-			}
-			if (this.chunkTicket == null)
-			{
-				chunkTicket = ForgeChunkManager.requestTicket(mod_pocketDim.instance, worldObj, Type.NORMAL);
-				if(chunkTicket == null)
-				{
-					return;
-				}
-				chunkTicket.getModData().setInteger("goldDimDoorX", xCoord);
-				chunkTicket.getModData().setInteger("goldDimDoorY", yCoord);
-				chunkTicket.getModData().setInteger("goldDimDoorZ", zCoord);
-				forceChunkLoading(chunkTicket,this.xCoord,this.zCoord);
-			}
 		}
 	}
 	
 	@Override
-	public void forceChunkLoading(Ticket chunkTicket,int x,int z)
+	public void initialize(Ticket ticket)
 	{
-		Point4D origin = PocketManager.getDimensionData(this.worldObj).origin();
+		initialized = true;
-		int orientation = PocketManager.getDimensionData(this.worldObj).orientation();
+		chunkTicket = ticket;
 		
-		int xOffset=0;
+		// Only do anything if this function is running on the server side
-		int zOffset=0;
+		// NOTE: We don't have to check whether this block is the upper door
-		
+		// block or the lower one because only one of them should have a
-		switch(orientation)
+		// link associated with it.
+		if (!worldObj.isRemote)
 		{
-		case 0:
+			NewDimData dimension = PocketManager.getDimensionData(worldObj);
-			xOffset = PocketBuilder.DEFAULT_POCKET_SIZE/2;
-			break;
-		case 1: 
-			zOffset = PocketBuilder.DEFAULT_POCKET_SIZE/2;
 			
-			break;
+			// Check whether a ticket has already been assigned to this door
-		case 2:
+			if (chunkTicket == null)
-			xOffset = -PocketBuilder.DEFAULT_POCKET_SIZE/2;
-
-			break;
-		case 3:
-			zOffset = -PocketBuilder.DEFAULT_POCKET_SIZE/2;
-
-			break;
-		}
-		for(int chunkX = -2; chunkX<3;chunkX++)
-		{
-			for(int chunkZ = -2; chunkZ<3;chunkZ++)
 			{
-				ForgeChunkManager.forceChunk(chunkTicket, new ChunkCoordIntPair((origin.getX()+xOffset >> 4)+chunkX, (origin.getZ()+zOffset >> 4)+chunkZ));
+				// No ticket yet.
+				// Check if this area should be loaded and request a new ticket.
+				if (isValidChunkLoaderSetup(dimension))
+				{
+					chunkTicket = ChunkLoaderHelper.createTicket(xCoord, yCoord, zCoord, worldObj);
+				}
+			}
+			else
+			{
+				// A ticket has already been provided.
+				// Check if this area should be loaded. If not, release the ticket.
+				if (!isValidChunkLoaderSetup(dimension))
+				{
+					ForgeChunkManager.releaseTicket(chunkTicket);
+					chunkTicket = null;
+				}
+			}
+			
+			// If chunkTicket isn't null at this point, then this is a valid door setup.
+			// The last step is to request force loading of the pocket's chunks.
+			if (chunkTicket != null)
+			{
+				ChunkLoaderHelper.forcePocketChunks(dimension, chunkTicket);
 			}
 		}
 	}
 	
+	private boolean isValidChunkLoaderSetup(NewDimData dimension)
+	{
+		// Check the various conditions that make this a valid door setup.
+		// 1. The door must be inside the pocket's XZ boundaries,
+		//		to prevent loading of chunks with a distant door
+		// 2. The dimension must be a pocket dimension
+		// 3. The door must be linked so that it's clear that it's not a normal door
+		
+		return (dimension.isPocketDimension() && dimension.getLink(xCoord, yCoord, zCoord) != null &&
+				PocketBuilder.calculateDefaultBounds(dimension).contains(xCoord, yCoord, zCoord));
+	}
+
 	@Override
 	public void invalidate() 
 	{

src/main/java/StevenDimDoors/mod_pocketDim/world/PocketBuilder.java

@@ -8,7 +8,7 @@ import net.minecraft.world.World;
 import net.minecraft.world.chunk.Chunk;
 import net.minecraft.world.chunk.storage.ExtendedBlockStorage;
 import net.minecraftforge.common.DimensionManager;
-import StevenDimDoors.experimental.MazeBuilder;
+import StevenDimDoors.experimental.BoundingBox;
 import StevenDimDoors.mod_pocketDim.Point3D;
 import StevenDimDoors.mod_pocketDim.blocks.IDimDoor;
 import StevenDimDoors.mod_pocketDim.config.DDProperties;
@@ -21,10 +21,10 @@ import StevenDimDoors.mod_pocketDim.dungeon.DungeonSchematic;
 import StevenDimDoors.mod_pocketDim.dungeon.pack.DungeonPackConfig;
 import StevenDimDoors.mod_pocketDim.helpers.DungeonHelper;
 import StevenDimDoors.mod_pocketDim.helpers.yCoordHelper;
+import StevenDimDoors.mod_pocketDim.items.ItemDimensionalDoor;
 import StevenDimDoors.mod_pocketDim.schematic.BlockRotator;
 import StevenDimDoors.mod_pocketDim.util.Pair;
 import StevenDimDoors.mod_pocketDim.util.Point4D;
-import StevenDimDoors.mod_pocketDim.items.ItemDimensionalDoor;
 
 public class PocketBuilder
 {	
@@ -559,4 +559,39 @@ public class PocketBuilder
 		extBlockStorage.setExtBlockMetadata(localX, y & 15, localZ, metadata);
 		chunk.setChunkModified();
 	}
+
+	public static BoundingBox calculateDefaultBounds(NewDimData pocket)
+	{
+		// Calculate the XZ bounds of this pocket assuming that it has the default size
+		// The Y bounds will be set to encompass the height of a chunk.
+		
+		int minX = 0;
+		int minZ = 0;
+		Point4D origin = pocket.origin();
+		int orientation = pocket.orientation();
+		if (orientation < 0 || orientation > 3)
+		{
+			throw new IllegalArgumentException("pocket has an invalid orientation value.");
+		}
+		switch (orientation)
+		{
+		case 0:
+			minX = origin.getX() - DEFAULT_POCKET_WALL_THICKNESS + 1;
+			minZ = origin.getZ() - DEFAULT_POCKET_SIZE / 2;
+			break;
+		case 1:
+			minX = origin.getX() - DEFAULT_POCKET_SIZE / 2;
+			minZ = origin.getZ() - DEFAULT_POCKET_WALL_THICKNESS + 1;
+			break;
+		case 2:
+			minX = origin.getX() + DEFAULT_POCKET_WALL_THICKNESS - DEFAULT_POCKET_SIZE;
+			minZ = origin.getZ() - DEFAULT_POCKET_SIZE / 2;
+			break;
+		case 3:
+			minX = origin.getX() - DEFAULT_POCKET_SIZE / 2;
+			minZ = origin.getZ() + DEFAULT_POCKET_WALL_THICKNESS - DEFAULT_POCKET_SIZE;
+			break;
+		}
+		return new BoundingBox(minX, 0, minZ, DEFAULT_POCKET_SIZE, 255, DEFAULT_POCKET_SIZE);
+	}
 }