ForgePatch/forge/patches/minecraft_server/net/minecraft/src/WorldProvider.java.patch

--- ../src_base/minecraft_server/net/minecraft/src/WorldProvider.java	0000-00-00 00:00:00.000000000 -0000
+++ ../src_work/minecraft_server/net/minecraft/src/WorldProvider.java	0000-00-00 00:00:00.000000000 -0000
@@ -1,5 +1,7 @@
 package net.minecraft.src;
 
+import net.minecraft.src.forge.DimensionManager;
+
 public abstract class WorldProvider
 {
     public World worldObj;
@@ -95,22 +97,7 @@
 
     public static WorldProvider getProviderForDimension(int i)
     {
-        if (i == -1)
-        {
-            return new WorldProviderHell();
-        }
-        if (i == 0)
-        {
-            return new WorldProviderSurface();
-        }
-        if (i == 1)
-        {
-            return new WorldProviderEnd();
-        }
-        else
-        {
-            return null;
-        }
+        return DimensionManager.getProvider(i);
     }
 
     public ChunkCoordinates getEntrancePortalLocation()
@@ -129,4 +116,36 @@
             return worldObj.worldHeight / 2;
         }
     }
+    
+    /**
+     * Returns the sub-folder of the world folder that this WorldProvider saves to.
+     * EXA: DIM1, DIM-1
+     * @return The sub-folder name to save this world's chunks to.
+     */
+    public abstract String getSaveFolder();
+    
+    /**
+     * A message to display to the user when they transfer to this dimension.
+     * 
+     * @return The message to be displayed
+     */
+    public abstract String getWelcomeMessage();
+    
+    /**
+     * A Message to display to the user when they transfer out of this dismension.
+     * 
+     * @return The message to be displayed
+     */
+    public abstract String getDepartMessage();
+    
+    /**
+     * The dimensions movement factor. Relative to normal overworld. 
+     * It is applied to the players position when they transfer dimensions.
+     * Exa: Nether movement is 8.0
+     * @return The movement factor
+     */
+    public double getMovementFactor()
+    {
+        return 1.0;
+    }
 }