More reliable tunnel lights. Add bridge spine. Remove column noise. Add tarmac texture. Improve license docs

README.txt

@@ -1,5 +1,9 @@
-roadv7 0.1.0 by paramat
+roadv7 0.1.1 by paramat
 For Minetest 0.4.13 and later
 Depends default
-Licenses: code LGPL 2.1
+Licenses: Source code LGPL 2.1. Media (textures) CC BY-SA 3.0
 See license.txt for license information
+
+Use with mapgen v7 only.
+Creates a worldwide network of roads, bridges and tunnels.
+'np_alt' noise parameters must match any custom 'terrain_alt' noise parameters used in mgv7.

init.lua

@@ -1,9 +1,10 @@
 -- Parameters
 
-local DEBUG = true
+local DEBUG = false
 
 
--- 2D noise for mgv7 terrain_alt
+-- 2D noise for lower terrain
+-- Must match 'terrain_alt' noise parameters used in mgv7
 
 local np_alt = {
 	offset = 4,
@@ -58,17 +59,6 @@ local np_pathd = {
 	persist = 0.4
 }
 
--- 2D noise for columns
-
-local np_column = {
-	offset = 0,
-	scale = 1,
-	spread = {x = 8, y = 8, z = 8},
-	seed = 1728833,
-	octaves = 3,
-	persist = 2
-}
-
 
 -- Do files
 
@@ -110,7 +100,6 @@ local nobj_patha = nil
 local nobj_pathb = nil
 local nobj_pathc = nil
 local nobj_pathd = nil
-local nobj_column = nil
 
 
 -- Localise noise buffers
@@ -120,7 +109,6 @@ local nbuf_patha
 local nbuf_pathb
 local nbuf_pathc
 local nbuf_pathd
-local nbuf_column
 
 
 -- On generated function
@@ -139,9 +127,9 @@ minetest.register_on_generated(function(minp, maxp, seed)
 	local y0 = minp.y
 	local z0 = minp.z
 	
-	local sidelen = x1 - x0 + 1
+	local sidelen  = x1 - x0 + 1
-	local emerlen = sidelen + 32
+	local emerlen  = sidelen + 32
-	local overlen = sidelen + 9
+	local overlen  = sidelen + 9
 	local pmapdims = {x = overlen, y = overlen, z = 1}
 	local pmapminp = {x = x0 - 5, y = z0 - 5}
 
@@ -150,14 +138,12 @@ minetest.register_on_generated(function(minp, maxp, seed)
 	nobj_pathb  = nobj_pathb  or minetest.get_perlin_map(np_pathb,  pmapdims)
 	nobj_pathc  = nobj_pathc  or minetest.get_perlin_map(np_pathc,  pmapdims)
 	nobj_pathd  = nobj_pathd  or minetest.get_perlin_map(np_pathd,  pmapdims)
-	nobj_column = nobj_column or minetest.get_perlin_map(np_column, pmapdims)
 	
 	local nvals_alt    = nobj_alt   :get2dMap_flat(pmapminp, nbuf_alt)
 	local nvals_patha  = nobj_patha :get2dMap_flat(pmapminp, nbuf_patha)
 	local nvals_pathb  = nobj_pathb :get2dMap_flat(pmapminp, nbuf_pathb)
 	local nvals_pathc  = nobj_pathc :get2dMap_flat(pmapminp, nbuf_pathc)
 	local nvals_pathd  = nobj_pathd :get2dMap_flat(pmapminp, nbuf_pathd)
-	local nvals_column = nobj_column:get2dMap_flat(pmapminp, nbuf_column)
 
 	local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
 	local area = VoxelArea:new{MinEdge = emin, MaxEdge = emax}
@@ -181,7 +167,6 @@ minetest.register_on_generated(function(minp, maxp, seed)
 			local n_zprepathd = nvals_pathd[(ni - overlen)]
 
 			if x >= x0 - 4 and z >= z0 - 4 then
-				local abscol = math.abs(nvals_column[ni])
 				local tlevel = math.floor(nvals_alt[ni])
 				local pathy = math.min(math.max(tlevel, 7), 42)
 
@@ -223,54 +208,64 @@ minetest.register_on_generated(function(minp, maxp, seed)
 					end
 
 					if tunnel then
-						excatop = pathy + 5 -- tunnel
+						excatop = pathy + 5
 					else
-						excatop = y1 -- excavate to mapchunk top
+						excatop = y1
 					end
 					-- place path node brush
 					local vi = area:index(x, pathy, z)
 					data[vi] = c_roadwhite
 
-					for i = -4, 4 do
 					for k = -4, 4 do
-						local radsq = (math.abs(i)) ^ 2 + (math.abs(k)) ^ 2
+						local vi = area:index(x - 4, pathy, z + k)
-						if radsq <= 13 then
+						for i = -4, 4 do
-							local vi = area:index(x + i, pathy, z + k)
+							local radsq = (math.abs(i)) ^ 2 + (math.abs(k)) ^ 2
-							local nodid = data[vi]
+							if radsq <= 13 then
-							if nodid ~= c_roadwhite then
+								local nodid = data[vi]
-								data[vi] = c_roadblack
+								if nodid ~= c_roadwhite then
-							end
+									data[vi] = c_roadblack
-						elseif radsq <= 25 then
+								end
-							local vi = area:index(x + i, pathy, z + k)
+							elseif radsq <= 25 then
-							local nodid = data[vi]
+								local nodid = data[vi]
-							if nodid ~= c_roadblack
+								if nodid ~= c_roadblack
-									and nodid ~= c_roadwhite then
+										and nodid ~= c_roadwhite then
-								data[vi] = c_roadslab
+									data[vi] = c_roadslab
+								end
 							end
+							vi = vi + 1
 						end
 					end
-					end
+					-- foundations or bridge structure
-					-- foundations
-					for i = -4, 4 do
 					for k = -4, 4 do
-						local radsq = (math.abs(i)) ^ 2 + (math.abs(k)) ^ 2
+						local vi = area:index(x - 4, pathy - 1, z + k)
-						if radsq <= 25 then
+						for i = -4, 4 do
-							local vi = area:index(x + i, pathy - 1, z + k)
+							local radsq = (math.abs(i)) ^ 2 + (math.abs(k)) ^ 2
-							local nodid = data[vi]
+							if radsq <= 25 then
-							if nodid ~= c_roadblack
+								local nodid = data[vi]
-									and nodid ~= c_roadwhite
+								if nodid ~= c_roadblack
-									and nodid ~= c_roadslab then
+										and nodid ~= c_roadwhite
-								data[vi] = c_concrete
+										and nodid ~= c_roadslab then
+									data[vi] = c_concrete
+								end
 							end
+							if radsq <= 2 then
+								local viu = vi - emerlen
+								local nodid = data[viu]
+								if nodid ~= c_roadblack
+										and nodid ~= c_roadwhite
+										and nodid ~= c_roadslab then
+									data[viu] = c_concrete
+								end
+							end
+							vi = vi + 1
 						end
 					end
-					end
 					-- bridge columns
-					if abscol < 0.3 then
+					if math.random() <= 0.0625 then
 						for xx = x - 1, x + 1 do
 						for zz = z - 1, z + 1 do
-							local vi = area:index(xx, pathy - 2, zz)
+							local vi = area:index(xx, pathy - 3, zz)
-							for y = pathy - 2, y0 - 16, -1 do
+							for y = pathy - 3, y0 - 16, -1 do
 								local nodid = data[vi]
 								if nodid == c_stone
 										or nodid == c_destone
@@ -294,7 +289,9 @@ minetest.register_on_generated(function(minp, maxp, seed)
 									if nodid ~= c_air
 											and nodid ~= c_ignore
 											and nodid ~= c_meselamp then
-										if math.random() < 0.02 then
+										if (math.abs(zz - z) == 4
+												or math.abs(xx - x) == 4)
+												and math.random() <= 0.2 then
 											data[vi] = c_meselamp
 										else
 											data[vi] = c_concrete

license.txt

@@ -2,16 +2,48 @@ License of source code
 ----------------------
 Copyright (C) 2016 paramat
 
-This program is free software; you can redistribute it and/or modify
+This program is free software; you can redistribute it and/or modify it under the terms
-it under the terms of the GNU Lesser General Public License as published by
+of the GNU Lesser General Public License as published by the Free Software Foundation;
-the Free Software Foundation; either version 2.1 of the License, or
+either version 2.1 of the License, or (at your option) any later version.
-(at your option) any later version.
 
-This program is distributed in the hope that it will be useful,
+This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
-but WITHOUT ANY WARRANTY; without even the implied warranty of
+without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+See the GNU Lesser General Public License for more details:
-GNU Lesser General Public License for more details.
+https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 
-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.,
+License of media (textures)
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+---------------------------
+Copyright (C) 2016 paramat
+
+Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)
+
+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/