Set up actually registering Rifts

Repaired a derp I did in which the Tile Entities did not have a "World"
to get the ID from for the Location to turn into a Location. I needed to
change a lot of constructors to include said "World" as a parameter.

Set up DDTileEntityBase to save after it's paired, registered or
unpaired and actually wrote the readFromNBT and writeToNBT for that.

src/main/java/com/zixiken/dimdoors/blocks/BlockDimDoorGold.java

@@ -27,6 +27,6 @@ public class BlockDimDoorGold extends BlockDimDoorBase {
 	public Item getItemDoor() {return ModItems.itemDimDoorGold;}
 	
 	@Override
-	public TileEntity createNewTileEntity(World world, int metadata) {return new TileEntityDimDoorGold();}
+	public TileEntity createNewTileEntity(World world, int metadata) {return new TileEntityDimDoorGold(world);}
 
 }

src/main/java/com/zixiken/dimdoors/blocks/BlockRift.java

@@ -180,7 +180,7 @@ public class BlockRift extends Block implements ITileEntityProvider {
     @Override
 	public TileEntity createNewTileEntity(World world, int metadata)
 	{
-		return new TileEntityRift();
+		return new TileEntityRift(world);
 	}
 	
 	@Override

src/main/java/com/zixiken/dimdoors/blocks/BlockTransTrapdoor.java

@@ -75,7 +75,7 @@ public class BlockTransTrapdoor extends BlockTrapDoor implements IDimDoor, ITile
 	}
 
 	@Override
-	public TileEntity createNewTileEntity(World world, int metadata) {return new TileEntityTransTrapdoor();}
+	public TileEntity createNewTileEntity(World world, int metadata) {return new TileEntityTransTrapdoor(world);}
 
 	@Override
 	public void placeLink(World world, BlockPos pos) {

src/main/java/com/zixiken/dimdoors/tileentities/DDTileEntityBase.java

@@ -3,6 +3,7 @@ package com.zixiken.dimdoors.tileentities;
 import com.zixiken.dimdoors.shared.RiftRegistry;
 import java.util.Random;
 import net.minecraft.block.state.IBlockState;
+import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
@@ -18,6 +19,12 @@ public abstract class DDTileEntityBase extends TileEntity
 	 * @return an array of floats representing RGBA color where 1.0 = 255.
 	 */
 	public abstract float[] getRenderColor(Random rand);
+        
+        DDTileEntityBase(World world) { //@todo what is the difference between a TileEntity instance being created on Block placement and on world-load?
+            super();
+            this.setWorld(world);
+            register();
+        }
 
 	@Override
 	public boolean shouldRefresh(World world, BlockPos pos, IBlockState oldState, IBlockState newSate) {
@@ -36,6 +43,7 @@ public abstract class DDTileEntityBase extends TileEntity
             pairedRiftID = otherRiftID;
             RiftRegistry.Instance.pair(pairedRiftID, riftID);                    
             isPaired = true;
+            this.markDirty();
         }
         
         public void unpair() {
@@ -46,9 +54,30 @@ public abstract class DDTileEntityBase extends TileEntity
                 isPaired = false;
                 RiftRegistry.Instance.unpair(pairedRiftID);
             }
+            this.markDirty();
         }
         
         private void register() {
             riftID = RiftRegistry.Instance.registerNewRift(this);
+            this.markDirty();
         }
+        
+        @Override
+	public void readFromNBT(NBTTagCompound nbt) {
+		super.readFromNBT(nbt);
+		try {
+			this.isPaired = nbt.getBoolean("isPaired");
+			this.riftID = nbt.getInteger("riftID");
+			this.pairedRiftID = nbt.getInteger("pairedRiftID");
+		} catch (Exception e) {}
+	}
+        
+        @Override
+	public NBTTagCompound writeToNBT(NBTTagCompound nbt) {
+		super.writeToNBT(nbt);
+		nbt.setBoolean("isPaired", this.isPaired);
+		nbt.setInteger("riftID", this.riftID);
+		nbt.setInteger("pairedRiftID", this.pairedRiftID);
+		return nbt;
+	}
 }

src/main/java/com/zixiken/dimdoors/tileentities/TileEntityDimDoor.java

@@ -4,6 +4,7 @@ import java.util.Random;
 
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.util.EnumFacing;
+import net.minecraft.world.World;
 
 
 public class TileEntityDimDoor extends DDTileEntityBase
@@ -15,6 +16,10 @@ public class TileEntityDimDoor extends DDTileEntityBase
 	public boolean isDungeonChainLink;
 	public boolean hasGennedPair=false;
 
+    public TileEntityDimDoor(World world) {
+        super(world);
+    }
+
 	@Override
 	public void readFromNBT(NBTTagCompound nbt) {
 		super.readFromNBT(nbt);

src/main/java/com/zixiken/dimdoors/tileentities/TileEntityDimDoorGold.java

@@ -1,12 +1,17 @@
 package com.zixiken.dimdoors.tileentities;
 
 import com.zixiken.dimdoors.IChunkLoader;
+import net.minecraft.world.World;
 import net.minecraftforge.common.ForgeChunkManager;
 import net.minecraftforge.common.ForgeChunkManager.Ticket;
 
 public class TileEntityDimDoorGold extends TileEntityDimDoor implements IChunkLoader {
 	private Ticket chunkTicket;
 	private boolean initialized = false;
+
+    public TileEntityDimDoorGold(World world) {
+        super(world);
+    }
 	
 	@Override
 	public boolean isInitialized() {

src/main/java/com/zixiken/dimdoors/tileentities/TileEntityRift.java

@@ -11,6 +11,7 @@ import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.util.ITickable;
 import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
 
 public class TileEntityRift extends DDTileEntityBase implements ITickable {
 	private static final int ENDERMAN_SPAWNING_CHANCE = 1;
@@ -29,7 +30,8 @@ public class TileEntityRift extends DDTileEntityBase implements ITickable {
 	public int riftRotation = random.nextInt(360);
 	public float growth = 0;
 	
-	public TileEntityRift() {
+	public TileEntityRift(World world) {
+            super(world);
 		// Vary the update times of rifts to prevent all the rifts in a cluster
 		// from updating at the same time.
 		updateTimer = random.nextInt(UPDATE_PERIOD);

src/main/java/com/zixiken/dimdoors/tileentities/TileEntityTransTrapdoor.java

@@ -1,9 +1,14 @@
 package com.zixiken.dimdoors.tileentities;
 
 import java.util.Random;
+import net.minecraft.world.World;
 
 public class TileEntityTransTrapdoor extends DDTileEntityBase {
 
+    public TileEntityTransTrapdoor(World world) {
+        super(world);
+    }
+
 	@Override
 	public float[] getRenderColor(Random rand) {
 		float[] rgbaColor = {1,1,1,1};