From e5e7475476d1a88c7501f601d5d04aa107120b5f Mon Sep 17 00:00:00 2001
From: Duane <duane@duanerobertson.com>
Date: Thu, 11 Aug 2016 00:13:37 -0500
Subject: [PATCH] Remove dead heightmap code.

---
 cavegen.lua | 11 +----------
 mapgen.lua  |  5 +----
 2 files changed, 2 insertions(+), 14 deletions(-)

diff --git a/cavegen.lua b/cavegen.lua
index dcea3b3..ef8a0e9 100644
--- a/cavegen.lua
+++ b/cavegen.lua
@@ -17,11 +17,6 @@ fun_caves.cavegen = function(minp, maxp, data, area, node, heightmap, underzone,
 	local map_min = {x = minp.x, y = minp.y - 1, z = minp.z}
 	local return_heightmap = false
 
-	if not heightmap then
-		return_heightmap = true
-		heightmap = {}
-	end
-
 	local cave_1 = minetest.get_perlin_map(fun_caves.cave_noise_1, map_max):get3dMap_flat(map_min)
 	local cave_2 = minetest.get_perlin_map(fun_caves.cave_noise_2, map_max):get3dMap_flat(map_min)
 	local cave_3 = minetest.get_perlin_map(cave_noise_3, {x=csize.x, y=csize.z}):get2dMap_flat({x=minp.x, y=minp.z})
@@ -140,9 +135,5 @@ fun_caves.cavegen = function(minp, maxp, data, area, node, heightmap, underzone,
 		end
 	end
 
-	if return_heightmap then
-		return write, heightmap
-	else
-		return write, nil
-	end
+	return write
 end
diff --git a/mapgen.lua b/mapgen.lua
index b439bcc..33105f8 100644
--- a/mapgen.lua
+++ b/mapgen.lua
@@ -442,10 +442,7 @@ local function generate(p_minp, p_maxp, seed)
 		local biomemap
 		if fun_caves.cavegen and fun_caves.decogen then
 			local h2, write_cave
-			write_cave, h2 = fun_caves.cavegen(minp, maxp, data, area, node, heightmap, underzone, ground_nodes)
-			if h2 then
-				heightmap = h2
-			end
+			write_cave = fun_caves.cavegen(minp, maxp, data, area, node, heightmap, underzone, ground_nodes)
 			write = write or write_cave
 
 			if fun_caves.use_bi_hi then