update technic

1 files changed, 9 insertions, 6 deletions

diff --git a/technic_worldgen/oregen.lua b/technic_worldgen/oregen.lua
index fd2393b..41656c8 100644
--- a/technic_worldgen/oregen.lua
+++ b/technic_worldgen/oregen.lua
@@ -116,27 +116,30 @@ minetest.register_ore({
 })
 
 -- Sulfur
+local sulfur_buf = nil
+local sulfur_noise= nil
+
 minetest.register_on_generated(function(minp, maxp, seed)
 	local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
 	local a = VoxelArea:new{
 		MinEdge = {x = emin.x, y = emin.y, z = emin.z},
 		MaxEdge = {x = emax.x, y = emax.y, z = emax.z},
 	}
-	local data = vm:get_data()
+	local data = vm:get_data(sulfur_buf)
 	local pr = PseudoRandom(17 * minp.x + 42 * minp.y + 101 * minp.z)
-	local noise = minetest.get_perlin(9876, 3, 0.5, 100)
-	
+	sulfur_noise = sulfur_noise or minetest.get_perlin(9876, 3, 0.5, 100)
+
 	local c_lava = minetest.get_content_id("default:lava_source")
 	local c_lava_flowing = minetest.get_content_id("default:lava_flowing")
 	local c_stone = minetest.get_content_id("default:stone")
 	local c_sulfur = minetest.get_content_id("technic:mineral_sulfur")
-	
+
 	local grid_size = 5
 	for x = minp.x + math.floor(grid_size / 2), maxp.x, grid_size do
 	for y = minp.y + math.floor(grid_size / 2), maxp.y, grid_size do
 	for z = minp.z + math.floor(grid_size / 2), maxp.z, grid_size do
 		local c = data[a:index(x, y, z)]
-		if (c == c_lava or c == c_lava_flowing) and noise:get3d({x = x, y = z, z = z}) >= 0.4 then
+		if (c == c_lava or c == c_lava_flowing) and sulfur_noise:get3d({x = x, y = z, z = z}) >= 0.4 then
 			for xx = math.max(minp.x, x - grid_size), math.min(maxp.x, x + grid_size) do
 			for yy = math.max(minp.y, y - grid_size), math.min(maxp.y, y + grid_size) do
 			for zz = math.max(minp.z, z - grid_size), math.min(maxp.z, z + grid_size) do
@@ -151,7 +154,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
 	end
 	end
 	end
-	
+
 	vm:set_data(data)
 	vm:write_to_map(data)
 end)