From f1a8bf76fc618018be1a3a187e06101f7129cb3d Mon Sep 17 00:00:00 2001
From: David Vierra <codewarrior@hawaii.rr.com>
Date: Mon, 12 Dec 2011 19:07:26 -1000
Subject: [PATCH] Set HeightMap to all zeros in the Nether to match what the
 game does. Otherwise, Nether Wart won't plant in low light.

---
 infiniteworld.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/infiniteworld.py b/infiniteworld.py
index 6a01244..2024fcc 100644
--- a/infiniteworld.py
+++ b/infiniteworld.py
@@ -38,8 +38,12 @@ SizeOnDisk = 'SizeOnDisk' #maybe update this?
 Time = 'Time'
 Player = 'Player'
 
+DIM_NETHER = -1
+DIM_END = 1
+
 __all__ = ["ZeroChunk", "InfdevChunk", "ChunkedLevelMixin", "MCInfdevOldLevel", "MCAlphaDimension", "ZipSchematic"]
 
+
 import re
 
 convert = lambda text: int(text) if text.isdigit() else text
@@ -853,7 +857,10 @@ class InfdevChunk(EntityLevel):
         return self.isLoaded() and self.root_tag == None
 
     def generateHeightMap(self):
-        extractLightMap(self.materials, self.Blocks, self.HeightMap)
+        if self.world.dimNo == DIM_NETHER:
+            self.HeightMap[:] = 0
+        else:
+            extractLightMap(self.materials, self.Blocks, self.HeightMap)
          
     def chunkChanged(self, calcLighting=True):
         """ You are required to call this function after you are done modifying