Unlimited size. Flolands nodes. Tunnels

README.txt

@@ -1,4 +1,4 @@
-floatindev 0.2.0 by paramat
+floatindev 0.3.0 by paramat
 For latest stable Minetest back to 0.4.8
 Depends default
 Licenses: code WTFPL

init.lua

@@ -1,53 +1,58 @@
--- floatindev 0.2.0 by paramat
+-- floatindev 0.3.0 by paramat
 -- For latest stable Minetest and back to 0.4.8
 -- Depends default
 -- License: code WTFPL
 
 -- Parameters
 
-local YMIN = 128 -- Approximate realm limits.
+local YMIN = 1 -- Approximate realm limits.
 local YMAX = 33000
 local XMIN = -33000
 local XMAX = 33000
 local ZMIN = -33000
 local ZMAX = 33000
 
-local CHUINT = 2 -- Chunk interval for floatland layers
+local CHUINT = 8 -- Chunk interval for floatland layers
-local WAVAMP = 16 -- Structure wave amplitude
+local WAVAMP = 48 -- Structure wave amplitude
-local HISCAL = 24 -- Upper structure vertical scale
+local HISCAL = 96 -- Upper structure vertical scale
-local LOSCAL = 24 -- Lower structure vertical scale
+local LOSCAL = 96 -- Lower structure vertical scale
-local HIEXP = 0.5 -- Upper structure density gradient exponent
+local HIEXP = 0.33 -- Upper structure density gradient exponent
-local LOEXP = 0.5 -- Lower structure density gradient exponent
+local LOEXP = 0.33 -- Lower structure density gradient exponent
 local CLUSAV = 0 -- Large scale variation average
 local CLUSAM = 0 -- Large scale variation amplitude
-local DIRTHR = 0.04 -- Dirt density threshold
+local TSTONE = 0.1 -- Stone density threshold
-local STOTHR = 0.08 -- Stone density threshold
+local TTUN = 0.03 -- Tunnel width
-local STABLE = 2 -- Minimum number of stacked stone nodes in column for dirt / sand on top
+local TVOID = 0.6 -- Void threshold
-
+local FLOCHA = 1 / 17 ^ 3 -- Floc chance per stone node
-local APPCHA = 0.02 -- Appletree chance
-local FLOCHA = 0.02 -- Flower chance
-local GRACHA = 0.11 -- Grass chance
-local ORECHA = 1 / (5 * 5 * 5)
 
 -- 3D noise for floatlands
 
 local np_float = {
 	offset = 0,
 	scale = 1,
-	spread = {x=256, y=256, z=256},
+	spread = {x=384, y=192, z=384},
 	seed = 277777979,
-	octaves = 6,
+	octaves = 5,
-	persist = 0.6
+	persist = 0.67
 }
 
--- 3D noise for caves
+-- 3D noises for tunnels
 
-local np_caves = {
+local np_weba = {
 	offset = 0,
 	scale = 1,
-	spread = {x=8, y=8, z=8},
+	spread = {x=128, y=128, z=128},
 	seed = -89000,
-	octaves = 2,
+	octaves = 3,
+	persist = 0.5
+}
+
+local np_webb = {
+	offset = 0,
+	scale = 1,
+	spread = {x=127, y=127, z=127},
+	seed = 85911,
+	octaves = 3,
 	persist = 0.5
 }
 
@@ -62,26 +67,15 @@ local np_cluster = {
 	persist = 0.5
 }
 
--- 2D noise for wave
+-- 3D noise for wave
 
 local np_wave = {
 	offset = 0,
 	scale = 1,
-	spread = {x=256, y=256, z=256},
+	spread = {x=512, y=512, z=512},
-	seed = -400000000089,
+	seed = -4000000089,
 	octaves = 3,
-	persist = 0.5
+	persist = 0.4
-}
-
--- 2D noise for biome
-
-local np_biome = {
-	offset = 0,
-	scale = 1,
-	spread = {x=250, y=250, z=250},
-	seed = 9130,
-	octaves = 3,
-	persist = 0.5
 }
 
 -- Stuff
@@ -90,90 +84,29 @@ floatindev = {}
 
 -- Nodes
 
-minetest.register_node("floatindev:stone", {
+minetest.register_node("floatindev:floatstone", {
-	description = "FLI Stone",
+	description = "Floatstone",
-	tiles = {"default_stone.png"},
+	tiles = {"floatindev_floatstone.png"},
 	is_ground_content = false, -- stops cavegen removing this node
 	groups = {cracky=3},
-	drop = "default:cobble",
 	sounds = default.node_sound_stone_defaults(),
 })
 
-minetest.register_node("floatindev:desertstone", {
+minetest.register_node("floatindev:floatsand", {
-	description = "FLI Desert Stone",
+	description = "Floatsand",
-	tiles = {"default_desert_stone.png"},
+	tiles = {"floatindev_floatsand.png"},
-	is_ground_content = false, -- stops cavegen removing this node
+	is_ground_content = false,
-	groups = {cracky=3},
+	groups = {crumbly=3, falling_node=1, sand=1},
-	drop = "default:desert_stone",
+	sounds = default.node_sound_sand_defaults(),
-	sounds = default.node_sound_stone_defaults(),
 })
 
--- Functions
+minetest.register_node("floatindev:floc", {
-
+	description = "Float crystal block",
-local function floatindev_appletree(x, y, z, area, data)
+	tiles = {"floatindev_floc.png"},
-	local c_tree = minetest.get_content_id("default:tree")
+	is_ground_content = false,
-	local c_apple = minetest.get_content_id("default:apple")
+	groups = {cracky=1},
-	local c_leaves = minetest.get_content_id("default:leaves")
+	sounds = default.node_sound_stone_defaults(),
-	for j = -2, 4 do
+})
-		if j >= 1 then
-			for i = -2, 2 do
-			for k = -2, 2 do
-				local vi = area:index(x + i, y + j + 1, z + k)
-				if math.random(48) == 2 then
-					data[vi] = c_apple
-				elseif math.random(3) ~= 2 then
-					data[vi] = c_leaves
-				end
-			end
-			end
-		end
-		local vi = area:index(x, y + j, z)
-		data[vi] = c_tree
-	end
-end
-
-local function floatindev_grass(data, vi)
-	local c_grass1 = minetest.get_content_id("default:grass_1")
-	local c_grass2 = minetest.get_content_id("default:grass_2")
-	local c_grass3 = minetest.get_content_id("default:grass_3")
-	local c_grass4 = minetest.get_content_id("default:grass_4")
-	local c_grass5 = minetest.get_content_id("default:grass_5")
-	local rand = math.random(5)
-	if rand == 1 then
-		data[vi] = c_grass1
-	elseif rand == 2 then
-		data[vi] = c_grass2
-	elseif rand == 3 then
-		data[vi] = c_grass3
-	elseif rand == 4 then
-		data[vi] = c_grass4
-	else
-		data[vi] = c_grass5
-	end
-end
-
-local function floatindev_flower(data, vi)
-	local c_danwhi = minetest.get_content_id("flowers:dandelion_white")
-	local c_danyel = minetest.get_content_id("flowers:dandelion_yellow")
-	local c_rose = minetest.get_content_id("flowers:rose")
-	local c_tulip = minetest.get_content_id("flowers:tulip")
-	local c_geranium = minetest.get_content_id("flowers:geranium")
-	local c_viola = minetest.get_content_id("flowers:viola")
-	local rand = math.random(6)
-	if rand == 1 then
-		data[vi] = c_danwhi
-	elseif rand == 2 then
-		data[vi] = c_rose
-	elseif rand == 3 then
-		data[vi] = c_tulip
-	elseif rand == 4 then
-		data[vi] = c_danyel
-	elseif rand == 5 then
-		data[vi] = c_geranium
-	else
-		data[vi] = c_viola
-	end
-end
 
 -- On generated function
 
@@ -183,10 +116,6 @@ minetest.register_on_generated(function(minp, maxp, seed)
 	or minp.z < ZMIN or maxp.z > ZMAX then
 		return
 	end
-	local chulay = math.floor((minp.y + 32) / 80) -- chunk layer number, 0 = surface chunk
-	if math.fmod(chulay, CHUINT) ~= 0 then -- if chulay / CHUINT has a remainder
-		return
-	end
 
 	local t1 = os.clock()
 	local x1 = maxp.x
@@ -203,109 +132,68 @@ minetest.register_on_generated(function(minp, maxp, seed)
 	local data = vm:get_data()
 	
 	local c_air = minetest.get_content_id("air")
-	local c_stodiam = minetest.get_content_id("default:stone_with_diamond")
-	local c_stomese = minetest.get_content_id("default:stone_with_mese")
-	local c_stogold = minetest.get_content_id("default:stone_with_gold")
-	local c_stocopp = minetest.get_content_id("default:stone_with_copper")
-	local c_stoiron = minetest.get_content_id("default:stone_with_iron")
-	local c_stocoal = minetest.get_content_id("default:stone_with_coal")
-	local c_grass = minetest.get_content_id("default:dirt_with_grass")
-	local c_dirt = minetest.get_content_id("default:dirt")
-	local c_desand = minetest.get_content_id("default:desert_sand")
 	
-	local c_flistone = minetest.get_content_id("floatindev:stone")
+	local c_floatstone = minetest.get_content_id("floatindev:floatstone")
-	local c_flidestone = minetest.get_content_id("floatindev:desertstone")
+	local c_floatsand = minetest.get_content_id("floatindev:floatsand")
+	local c_floc = minetest.get_content_id("floatindev:floc")
 	
 	local sidelen = x1 - x0 + 1
 	local chulens = {x=sidelen, y=sidelen, z=sidelen}
 	local minposxyz = {x=x0, y=y0, z=z0}
-	local minposxz = {x=x0, y=z0}
 	
 	local nvals_float = minetest.get_perlin_map(np_float, chulens):get3dMap_flat(minposxyz)
-	local nvals_caves = minetest.get_perlin_map(np_caves, chulens):get3dMap_flat(minposxyz)
+	local nvals_weba = minetest.get_perlin_map(np_weba, chulens):get3dMap_flat(minposxyz)
+	local nvals_webb = minetest.get_perlin_map(np_webb, chulens):get3dMap_flat(minposxyz)
 	local nvals_cluster = minetest.get_perlin_map(np_cluster, chulens):get3dMap_flat(minposxyz)
+	local nvals_wave = minetest.get_perlin_map(np_wave, chulens):get3dMap_flat(minposxyz)
 	
-	local nvals_wave = minetest.get_perlin_map(np_wave, chulens):get2dMap_flat(minposxz)
+	local chulay = math.floor((minp.y + 32) / 80) -- chunk layer number, 0 = surface chunk
-	local nvals_biome = minetest.get_perlin_map(np_biome, chulens):get2dMap_flat({x=x0+150, y=z0+50})
+	local tercen = (math.floor(chulay / CHUINT) * CHUINT + CHUINT / 2) * 80 - 32 -- terrain centre of this layer
 
 	local nixyz = 1
 	local nixz = 1
 	local stable = {}
-	local dirt = {}
-	local chumid = y0 + sidelen / 2
 	for z = z0, z1 do -- for each xy plane progressing northwards
 		for x = x0, x1 do
 			local si = x - x0 + 1
-			dirt[si] = 0
 			local nodename = minetest.get_node({x=x,y=y0-1,z=z}).name
 			if nodename == "air"
 			or nodename == "default:water_source" then
 				stable[si] = 0
 			else -- all else including ignore in ungenerated chunks
-				stable[si] = STABLE
+				stable[si] = 2
 			end
 		end
 		for y = y0, y1 do -- for each x row progressing upwards
 			local vi = area:index(x0, y, z)
 			for x = x0, x1 do -- for each node do
 				local si = x - x0 + 1
-				local flomid = chumid + nvals_wave[nixz] * WAVAMP
+				local flomid = tercen + nvals_wave[nixyz] * WAVAMP -- y of floatland middle
-				local grad
+
+				local grad -- density for node
 				if y > flomid then
 					grad = ((y - flomid) / HISCAL) ^ HIEXP
 				else
 					grad = ((flomid - y) / LOSCAL) ^ LOEXP
 				end
 				local density = nvals_float[nixyz] - grad + CLUSAV + nvals_cluster[nixyz] * CLUSAM
-				if density > 0 and density < 0.7 then -- if floatland shell
+
-					if nvals_caves[nixyz] - density > -0.7 then -- if no cave
+				local weba = math.abs(nvals_weba[nixyz]) < TTUN -- check for tunnel
-						if y > flomid and density < STOTHR and stable[si] >= STABLE then
+				local webb = math.abs(nvals_webb[nixyz]) < TTUN
-							if nvals_biome[nixz] > 0.45 then -- fine materials
+				local notun = not (weba and webb)
-								data[vi] = c_desand
+
-							else
+				if density > 0 and density < TVOID and notun then -- if floatland shell
-								if density < DIRTHR then
+					if y > flomid and density < TSTONE and stable[si] >= 2 then
-									data[vi] = c_grass
+						data[vi] = c_floatsand -- sand
-								else
+					else
-									data[vi] = c_dirt
+						if math.random() < FLOCHA then
-								end
+							data[vi] = c_floc -- floc
-								dirt[si] = dirt[si] + 1
-							end
 						else
-							if nvals_biome[nixz] > 0.45 then -- stone
+							data[vi] = c_floatstone -- stone
-								data[vi] = c_flidestone
-							elseif math.random() < ORECHA then
-								local osel = math.random(34)
-								if osel == 34 then
-									data[vi] = c_stodiam
-								elseif osel >= 31 then
-									data[vi] = c_stomese
-								elseif osel >= 28 then
-									data[vi] = c_stogold
-								elseif osel >= 19 then
-									data[vi] = c_stocopp
-								elseif osel >= 10 then
-									data[vi] = c_stoiron
-								else
-									data[vi] = c_stocoal
-								end
-							else
-								data[vi] = c_flistone
-							end
-							stable[si] = stable[si] + 1
 						end
-					else -- cave
+						stable[si] = stable[si] + 1
-						stable[si] = 0
 					end
-				elseif y > flomid and density < 0 and dirt[si] >= 1 then -- node above surface dirt
+				else -- air
-					if dirt[si] >= 2 and math.random() < APPCHA then
-						floatindev_appletree(x, y, z, area, data)
-					elseif math.random() < FLOCHA then
-						floatindev_flower(data, vi)
-					elseif math.random() < GRACHA then
-						floatindev_grass(data, vi)
-					end
-					dirt[si] = 0
-				else -- atmosphere
 					stable[si] = 0
 				end
 				nixyz = nixyz + 1