Use data buffer memory optimisation. Correct noise buffer memory optimisation. Change source code license to LGPL. Improve license docs

README.txt

@@ -1,4 +1,4 @@
-watershed 0.7.1 by paramat
+watershed 0.7.2 by paramat
 For Minetest 0.4.13 and later
 Depends default stairs bucket
-Licenses: code WTFPL, textures CC BY-SA
+Licenses: Source code LGPL (2.1). Media (textures) CC BY-SA (3.0)

init.lua

@@ -195,17 +195,22 @@ local nobj_magma   = nil
 
 -- Localise noise buffers
 
-local nbuf_terrain
-local nbuf_fissure
-local nbuf_temp
-local nbuf_humid
-local nbuf_seam
-local nbuf_strata
+local nbuf_terrain = {}
+local nbuf_fissure = {}
+local nbuf_temp = {}
+local nbuf_humid = {}
+local nbuf_seam = {}
+local nbuf_strata = {}
 	
-local nbuf_mid
-local nbuf_base
-local nbuf_xlscale
-local nbuf_magma
+local nbuf_mid = {}
+local nbuf_base = {}
+local nbuf_xlscale = {}
+local nbuf_magma = {}
+
+
+-- Localise data buffer
+
+local dbuf = {}
 
 
 -- Mapchunk generation function
@@ -741,7 +746,7 @@ minetest.register_chatcommand("regen",{
 		local pos2 = {x = x1, y = y1 + 1, z = z1}
 		local emin, emax = vm:read_from_map(pos1, pos2)
 		local area = VoxelArea:new({MinEdge = emin, MaxEdge = emax})
-		local data = vm:get_data()
+		local data = vm:get_data(dbuf)
 
 		watershed_chunkgen(x0, y0, z0, x1, y1, z1, area, data)	
 
@@ -773,7 +778,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
 
 	local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
 	local area = VoxelArea:new{MinEdge = emin, MaxEdge = emax}
-	local data = vm:get_data()
+	local data = vm:get_data(dbuf)
 
 	watershed_chunkgen(x0, y0, z0, x1, y1, z1, area, data)
 

license.txt

@@ -1,14 +1,53 @@
-            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
-                    Version 2, December 2004
+License of source code
+----------------------
+GNU Lesser General Public License (2.1)
+Copyright (C) 2014-2017 paramat.
 
- Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
 
- Everyone is permitted to copy and distribute verbatim or modified
- copies of this license document, and changing it is allowed as long
- as the name is changed.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
 
-            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-  0. You just DO WHAT THE FUCK YOU WANT TO.
-                       
+
+License of media (textures)
+---------------------------
+
+Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
+Copyright (C) 2014-2017 paramat
+
+You are free to:
+Share — copy and redistribute the material in any medium or format.
+Adapt — remix, transform, and build upon the material for any purpose, even commercially.
+The licensor cannot revoke these freedoms as long as you follow the license terms.
+
+Under the following terms:
+
+Attribution — You must give appropriate credit, provide a link to the license, and
+indicate if changes were made. You may do so in any reasonable manner, but not in any way
+that suggests the licensor endorses you or your use.
+
+ShareAlike — If you remix, transform, or build upon the material, you must distribute
+your contributions under the same license as the original.
+
+No additional restrictions — You may not apply legal terms or technological measures that
+legally restrict others from doing anything the license permits.
+
+Notices:
+
+You do not have to comply with the license for elements of the material in the public
+domain or where your use is permitted by an applicable exception or limitation.
+No warranties are given. The license may not give you all of the permissions necessary
+for your intended use. For example, other rights such as publicity, privacy, or moral
+rights may limit how you use the material.
+
+For more details:
+http://creativecommons.org/licenses/by-sa/3.0/