Mods hinzugefügt und geändert. Höhlen, Himmelsinseln und Asteroiden.

mods/other_worlds/README.md

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+Other Worlds
+===
+
+Minetest mod which adds asteroid layers.
+
+Each layer contains:
+
+1. Asteroids composed of unique materials.
+2. Decoration (or lack of) for the asteroid surfaces, including plants and glowing crystals.
+3. A skybox for the layer.
+
+Default layers are Space and Red Sky, but anyone familiar with editing mods should be able to easily adjust these or create different/ additional layers.
+
+
+Settings
+--------
+
+Settings for this mod can be adjusted in Minetests Settings tab -> All Settings
+
+See the comments in this file for how to adjust:
+
+1. The minimum and maximum height of each layer.
+2. Whether map-generation is currently active for individual layers.
+3. Whether player gravity changes for each layer (off by default).
+4. Whether crafting recipes are enabled.
+5. Set the chance of finding ores in asteroids (default is 27 [0 to 100]).
+
+Note: It is advised to turn off map-generation after you have generated the required number of asteroids.
+
+
+Licenses and Attribution
+-----------------------
+
+Components of this mod use multiple licenses and were the work of several individuals. Please see license.txt for the full list.

mods/other_worlds/asteroid_layer_helpers.lua

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+
+-- submodule
+
+otherworlds.asteroids = {}
+
+-- Approximate realm limits
+
+local XMIN = -33000
+local XMAX = 33000
+local ZMIN = -33000
+local ZMAX = 33000
+
+local ASCOT = 1.0 -- Large asteroid / comet nucleus noise threshold
+local SASCOT = 1.0 -- Small asteroid / comet nucleus noise threshold
+local STOT = 0.125 -- Asteroid stone threshold
+local COBT = 0.05 -- Asteroid cobble threshold
+local GRAT = 0.02 -- Asteroid gravel threshold
+local ICET = 0.05 -- Comet ice threshold
+local ATMOT = -0.2 -- Comet atmosphere threshold
+local FISTS = 0.01 -- Fissure noise threshold at surface. Controls size of fissures and amount / size of fissure entrances
+local FISEXP = 0.3 -- Fissure expansion rate under surface
+local ORECHA = otherworlds.settings.ore_chance.value -- Ore 1/x chance per stone node
+local CPCHU = 0 -- Maximum craters per chunk
+local CRMIN = 5 -- Crater radius minimum, radius includes dust and obsidian layers
+local CRRAN = 8 -- Crater radius range
+
+local random = math.random
+local floor = math.floor
+local abs = math.abs
+
+
+-- Note: for fewer large objects: increase the 'spread' numbers in 'np_large' noise parameters. For fewer small objects do the same in 'np_small'. Then tune size with 'ASCOT'
+
+local np_large = { -- 3D Perlin noise 1 for large structures
+	offset = 0,
+	scale = 1,
+	spread = {x = 256, y = 128, z = 256},
+	seed = -83928935,
+	octaves = 5,
+	persist = 0.6}
+
+local np_fissure = { -- 3D Perlin noise 3 for fissures
+	offset = 0,
+	scale = 1,
+	spread = {x = 64, y = 64, z = 64},
+	seed = -188881,
+	octaves = 4,
+	persist = 0.5}
+
+local np_small = { -- 3D Perlin noise 4 for small structures
+	offset = 0,
+	scale = 1,
+	spread = {x = 128, y = 64, z = 128},
+	seed = 1000760700090,
+	octaves = 4,
+	persist = 0.6}
+
+local np_ores = { -- 3D Perlin noise 5 for ore selection
+	offset = 0,
+	scale = 1,
+	spread = {x = 128, y = 128, z = 128},
+	seed = -70242,
+	octaves = 1,
+	persist = 0.5}
+
+local np_latmos = { -- 3D Perlin noise 6 for comet atmosphere
+	offset = 0,
+	scale = 1,
+	spread = {x = 256, y = 128, z = 256},
+	seed = -83928935,
+	octaves = 3,
+	persist = 0.6}
+
+local np_satmos = { -- 3D Perlin noise 7 for small comet atmosphere
+	offset = 0,
+	scale = 1,
+	spread = {x = 128, y = 64, z = 128},
+	seed = 1000760700090,
+	octaves = 2,
+	persist = 0.6}
+
+-- On dignode function. Atmosphere flows into a dug hole.
+
+core.register_on_dignode(function(pos, oldnode, digger)
+
+	if core.find_node_near(pos, 1, {"asteroid:atmos"})
+	and core.get_node(pos).name == "air" then
+		core.set_node(pos, {name = "asteroid:atmos"})
+	end
+end)
+
+-- Generate on_generated function based on parameters
+
+function otherworlds.asteroids.create_on_generated(YMIN, YMAX, content_ids)
+
+	local c_air = content_ids.c_air
+	local c_stone = content_ids.c_stone
+	local c_cobble = content_ids.c_cobble
+	local c_gravel = content_ids.c_gravel
+	local c_dust = content_ids.c_dust
+	local c_ironore = content_ids.c_ironore
+	local c_copperore = content_ids.c_copperore
+	local c_goldore = content_ids.c_goldore
+	local c_diamondore = content_ids.c_diamondore
+	local c_meseore = content_ids.c_meseore
+	local c_waterice = content_ids.c_waterice
+	local c_atmos = content_ids.c_atmos
+	local c_snowblock = content_ids.c_snowblock
+	local c_obsidian = content_ids.c_obsidian
+
+	-- return the function closed over the upvalues we want
+	return function(minp, maxp, seed)
+
+		if minp.x < XMIN or maxp.x > XMAX
+		or minp.y < YMIN or maxp.y > YMAX
+		or minp.z < ZMIN or maxp.z > ZMAX then
+			return
+		end
+
+		local x0, y0, z0 = minp.x, minp.y, minp.z
+		local x1, y1, z1 = maxp.x, maxp.y, maxp.z
+
+-- local t1 = os.clock()
+--print ("[asteroid] chunk ("..x0.." "..y0.." "..z0..")")
+
+		local sidelen = x1 - x0 + 1 -- chunk side length
+		local chulens = {x = sidelen, y = sidelen, z = sidelen}
+		local minpos = {x = x0, y = y0, z = z0}
+
+		local vm, emin, emax = core.get_mapgen_object("voxelmanip")
+		local area = VoxelArea:new{MinEdge = emin, MaxEdge = emax}
+		local data = vm:get_data()
+
+		local nvals1 = core.get_perlin_map(np_large, chulens):get_3d_map_flat(minpos)
+		local nvals3 = core.get_perlin_map(np_fissure, chulens):get_3d_map_flat(minpos)
+		local nvals4 = core.get_perlin_map(np_small, chulens):get_3d_map_flat(minpos)
+		local nvals5 = core.get_perlin_map(np_ores, chulens):get_3d_map_flat(minpos)
+		local nvals6 = core.get_perlin_map(np_latmos, chulens):get_3d_map_flat(minpos)
+		local nvals7 = core.get_perlin_map(np_satmos, chulens):get_3d_map_flat(minpos)
+
+		local ni = 1
+		local noise1abs, noise4abs, comet, noise1dep, noise4dep, vi
+
+		for z = z0, z1 do -- for each vertical plane do
+		for y = y0, y1 do -- for each horizontal row do
+
+		vi = area:index(x0, y, z) -- LVM index for first node in x row
+
+		for x = x0, x1 do -- for each node do
+
+			noise1abs = abs(nvals1[ni])
+			noise4abs = abs(nvals4[ni])
+			comet = false
+
+			-- comet biome
+			if nvals6[ni] < -(ASCOT + ATMOT)
+			or (nvals7[ni] < -(SASCOT + ATMOT) and nvals1[ni] < ASCOT) then
+				comet = true
+			end
+
+			-- if below surface
+			if noise1abs > ASCOT or noise4abs > SASCOT then
+
+				-- noise1dep zero at surface, positive beneath
+				noise1dep = noise1abs - ASCOT
+
+				-- if no fissure
+				if abs(nvals3[ni]) > FISTS + noise1dep * FISEXP then
+
+					-- noise4dep zero at surface, positive beneath
+					noise4dep = noise4abs - SASCOT
+
+					if not comet
+					or (comet and (noise1dep > random() + ICET
+					or noise4dep > random() + ICET)) then
+
+						-- asteroid or asteroid materials in comet
+						if noise1dep >= STOT or noise4dep >= STOT then
+
+							-- stone/ores
+							if random(ORECHA) == 1 then
+
+								if nvals5[ni] > 0.6 then
+									data[vi] = c_goldore
+								elseif nvals5[ni] < -0.6 then
+									data[vi] = c_diamondore
+								elseif nvals5[ni] > 0.2 then
+									data[vi] = c_meseore
+								elseif nvals5[ni] < -0.2 then
+									data[vi] = c_copperore
+								else
+									data[vi] = c_ironore
+								end
+							else
+								data[vi] = c_stone
+							end
+
+						elseif noise1dep >= COBT or noise4dep >= COBT then
+							data[vi] = c_cobble
+						elseif noise1dep >= GRAT or noise4dep >= GRAT then
+							data[vi] = c_gravel
+						else
+							data[vi] = c_dust
+						end
+					else -- comet materials
+						if noise1dep >= ICET or noise4dep >= ICET then
+							data[vi] = c_waterice
+						else
+							data[vi] = c_snowblock
+						end
+					end
+
+				elseif comet then -- fissures, if comet then add atmosphere
+					data[vi] = c_atmos
+				end
+
+			elseif comet then -- if comet atmosphere then
+				data[vi] = c_atmos
+			end
+
+			ni = ni + 1
+			vi = vi + 1
+		end
+		end
+		end
+
+		local cr, cx, cz, comet, surfy, vi, nr, nodeid
+
+		-- craters
+		for ci = 1, CPCHU do -- iterate
+
+			-- exponential radius
+			cr = CRMIN + floor(random() ^ 2 * CRRAN)
+			cx = random(minp.x + cr, maxp.x - cr) -- centre x
+			cz = random(minp.z + cr, maxp.z - cr) -- centre z
+			comet = false
+			surfy = false
+
+			for y = y1, y0 + cr, -1 do
+
+				vi = area:index(cx, y, cz) -- LVM index for node
+				nodeid = data[vi]
+
+				if nodeid == c_dust or nodeid == c_gravel or nodeid == c_cobble then
+					surfy = y
+					break
+
+				elseif nodename == c_snowblock or nodename == c_waterice then
+					comet = true
+					surfy = y
+					break
+				end
+			end
+
+			-- if surface found and 8 node space above impact node then
+			if surfy and y1 - surfy > 8 then
+
+				for x = cx - cr, cx + cr do -- for each plane do
+				for z = cz - cr, cz + cr do -- for each column do
+				for y = surfy - cr, surfy + cr do -- for each node do
+
+					-- LVM index for node
+					vi = area:index(x, y, z)
+					nr = ((x - cx) ^ 2 + (y - surfy) ^ 2 + (z - cz) ^ 2) ^ 0.5
+
+					if nr <= cr - 2 then
+
+						if comet then
+							data[vi] = c_atmos
+						else
+							data[vi] = c_air
+						end
+
+					elseif nr <= cr - 1 then
+
+						nodeid = data[vi]
+
+						if nodeid == c_gravel or nodeid == c_cobble
+						or nodeid == c_stone or nodeid == c_diamondore
+						or nodeid == c_goldore or nodeid == c_meseore
+						or nodeid == c_copperore or nodeid == c_ironore then
+							data[vi] = c_dust
+						end
+
+					elseif nr <= cr then
+
+						nodeid = data[vi]
+
+						if nodeid == c_cobble or nodeid == c_stone then
+							data[vi] = c_obsidian -- obsidian buried under dust
+						end
+					end
+				end
+				end
+				end
+			end
+		end
+
+		vm:set_data(data)
+		vm:set_lighting({day = 0, night = 0})
+		vm:calc_lighting()
+		vm:write_to_map(data)
+
+		data = nil ; collectgarbage("collect") -- clear mem
+--[[
+		local chugent = math.ceil((os.clock() - t1) * 1000)
+		print ("[asteroid] time "..chugent.." ms / used mem:"
+				.. collectgarbage("count") / 1024 .. " MiB")
+]]--
+	end
+end

mods/other_worlds/crafting.lua

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+
+-- register craft recipes when enabled
+
+if otherworlds.settings.crafting.enable then
+
+	core.register_craft({
+		output = "asteroid:cobble",
+		recipe = {{"asteroid:stone"}}
+	})
+
+	core.register_craft({
+		output = "asteroid:gravel",
+		recipe = {{"asteroid:cobble"}}
+	})
+
+	core.register_craft({
+		output = "asteroid:dust",
+		recipe = {{"asteroid:gravel"}}
+	})
+
+	core.register_craft({
+		type = "cooking",
+		output = "asteroid:stone",
+		recipe = "asteroid:cobble"
+	})
+
+	core.register_craft({
+		output = "asteroid:redcobble",
+		recipe = {{"asteroid:redstone"}}
+	})
+
+	core.register_craft({
+		output = "asteroid:redgravel",
+		recipe = {{"asteroid:redcobble"}}
+	})
+
+	core.register_craft({
+		output = "asteroid:reddust",
+		recipe = {{"asteroid:redgravel"}}
+	})
+
+	core.register_craft({
+		type = "cooking",
+		output = "asteroid:redstone",
+		recipe = "asteroid:redcobble"
+	})
+end

mods/other_worlds/init.lua

@@ -0,0 +1,26 @@
+
+-- global, mod path and load mod sections
+
+otherworlds = {}
+
+local modpath = core.get_modpath("other_worlds") .. "/"
+
+dofile(modpath .. "settings.lua")
+dofile(modpath .. "nodes.lua")
+dofile(modpath .. "crafting.lua")
+dofile(modpath .. "skybox.lua")
+
+-- required helpers for mapgen options below
+
+dofile(modpath .. "asteroid_layer_helpers.lua")
+
+if otherworlds.settings.space_asteroids.enable then
+	dofile(modpath .. "space_asteroids.lua")
+end
+
+if otherworlds.settings.redsky_asteroids.enable then
+	dofile(modpath .. "redsky_asteroids.lua")
+end
+
+
+print("[MOD] Other Worlds loaded")

mods/other_worlds/license.txt

@@ -0,0 +1,38 @@
+
+
+Original asteroids code:
+License: MIT (https://opensource.org/licenses/MIT)
+By paramat (available from https://github.com/paramat/asteroid)
+
+Original asteroid_ textures:
+License: CC BY-SA 3.0 (https://creativecommons.org/licenses/by/3.0/)
+Attribution: paramat
+
+Crystal models:
+License: MIT (https://opensource.org/licenses/MIT)
+By Electra Gizen
+
+Skybox texture:
+License: CC BY-SA 3.0 (https://creativecommons.org/licenses/by/3.0/)
+Attribution: Ulukai (available from http://opengameart.org/content/ulukais-space-skyboxes)
+
+---
+
+Recoloured textures from various mods:
+Grass textures based on default mod in minetest_game (WTFPL). 
+Redgrass texture based on junglegrass texture in default mod in minetest_game (assumed to be CC BY-SA 3.0).
+Red versions of asteroid textures (CC BY-SA 3.0).
+
+---
+
+Textures created for this mod:
+CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/)
+Attribution: Shara RedCat
+
+All original code and edits to code for this mod:
+License: MIT (https://opensource.org/licenses/MIT)
+By Shara RedCat, tenplus1 and Mewmon
+
+---
+
+Thanks also to DonBatman for help with the initial idea, and to the players of Red Cat Creative who gave ideas and helped in testing.

mods/other_worlds/mod.conf

@@ -0,0 +1,8 @@
+name = other_worlds
+description = Adds asteroid layers and height-based skybox switches to create space environments.
+depends = default
+optional_depends = pova, nether
+min_minetest_version = 5.0
+release = 30955
+author = TenPlus1
+title = Other Worlds

mods/other_worlds/models/crystal_shape01.obj

@@ -0,0 +1,228 @@
+# Blender v2.77 (sub 0) OBJ File: ''
+# www.blender.org
+mtllib crystal_shape01.mtl
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mods/other_worlds/models/crystal_shape02.obj

@@ -0,0 +1,198 @@
+# Blender v2.77 (sub 0) OBJ File: ''
+# www.blender.org
+mtllib crystal_shape02.mtl
+o Crystal_Taya2.000
+v 0.006739 0.025244 0.012075
+v 0.001956 0.043504 0.004196
+v 0.004129 0.024144 0.013098
+v 0.011672 0.002214 0.025031
+v 0.000000 0.051819 0.000000
+v 0.026389 -0.000477 -0.012306
+v 0.023148 -0.023541 0.023148
+v 0.012306 -0.000477 0.026389
+v 0.023266 -0.013100 -0.018731
+v 0.024664 -0.012754 -0.016476
+v 0.023359 -0.022037 -0.022441
+v -0.006315 0.024980 -0.013543
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+v 0.023148 -0.023541 -0.023148
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+v -0.012306 -0.000477 -0.026389
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+v -0.026389 -0.000477 0.012306
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+v 0.019685 -0.048181 0.019685
+v -0.019685 -0.048181 0.019685
+vt 0.0323 -0.2020
+vt -0.0000 0.0000
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+vt 0.0306 -0.2671
+vt -0.0000 0.0000
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+vt 0.0000 0.0000
+vt -0.0163 0.2146
+vt -0.0251 0.0110
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+vt 0.0836 -0.2974
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+vt -0.4283 0.2488
+vt 0.0346 0.2488
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+vt -0.4283 0.2488
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+vt 0.0276 0.2640
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+vt 0.1969 0.1969
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+vt -0.1969 -0.1969
+vn 0.1681 0.4273 0.8883
+vn 0.1213 0.5063 0.8538
+vn 0.8744 0.3663 0.3183
+vn 0.8744 0.3663 0.3182
+vn 0.8745 0.3664 0.3178
+vn 0.8439 0.0624 -0.5328
+vn 0.8105 0.2318 -0.5380
+vn 0.3182 0.3663 -0.8744
+vn 0.3183 0.3663 -0.8744
+vn 0.3181 0.3663 -0.8744
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+vn 0.0000 -0.1392 -0.9903
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+vn 0.0000 -0.1392 0.9903
+vn -0.9903 -0.1392 -0.0000
+vn 0.0000 -1.0000 -0.0000
+usemtl wire_191191191.000
+s 1
+f 1/1/1 2/2/1 3/3/1
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+f 27/80/29 28/81/29 26/82/29
+f 26/82/29 28/81/29 25/83/29

mods/other_worlds/nodes.lua

@@ -0,0 +1,311 @@
+
+-- Asteroid nodes
+
+core.register_node(":asteroid:stone", {
+	description = "Asteroid Stone",
+	tiles = {"default_stone.png"},
+	is_ground_content = false,
+	drop = 'asteroid:cobble',
+	groups = {cracky = 3, stone = 1, not_in_creative_inventory = 1},
+	sounds = default.node_sound_stone_defaults()
+})
+
+core.register_node(":asteroid:redstone", {
+	description = "Asteroid Stone",
+	tiles = {"asteroid_redstone.png"},
+	is_ground_content = false,
+	drop = 'asteroid:redcobble',
+	groups = {cracky = 3, stone = 1},
+	sounds = default.node_sound_stone_defaults()
+})
+
+core.register_node(":asteroid:cobble", {
+	description = "Asteroid Cobble",
+	tiles = {"asteroid_cobble.png"},
+	is_ground_content = false,
+	groups = {cracky = 3, stone = 2},
+	sounds = default.node_sound_stone_defaults()
+})
+
+core.register_node(":asteroid:redcobble", {
+	description = "Asteroid Cobble",
+	tiles = {"asteroid_redcobble.png"},
+	is_ground_content = false,
+	groups = {cracky = 3, stone = 2},
+	sounds = default.node_sound_stone_defaults()
+})
+
+core.register_node(":asteroid:gravel", {
+	description = "Asteroid Gravel",
+	tiles = {"asteroid_gravel.png"},
+	is_ground_content = false,
+	groups = {crumbly = 2},
+	sounds = default.node_sound_dirt_defaults({
+		footstep = {name = "default_gravel_footstep", gain = 0.2}
+	})
+})
+
+core.register_node(":asteroid:redgravel", {
+	description = "Asteroid Gravel",
+	tiles = {"asteroid_redgravel.png"},
+	is_ground_content = false,
+	groups = {crumbly = 2},
+	sounds = default.node_sound_dirt_defaults({
+		footstep = {name = "default_gravel_footstep", gain = 0.2}
+	})
+})
+
+core.register_node(":asteroid:dust", {
+	description = "Asteroid Dust",
+	tiles = {"asteroid_dust.png"},
+	is_ground_content = false,
+	groups = {crumbly = 3},
+	sounds = default.node_sound_dirt_defaults({
+		footstep = {name = "default_gravel_footstep", gain = 0.1}
+	})
+})
+
+core.register_node(":asteroid:reddust", {
+	description = "Asteroid Dust",
+	tiles = {"asteroid_reddust.png"},
+	is_ground_content = false,
+	groups = {crumbly = 3},
+	sounds = default.node_sound_dirt_defaults({
+		footstep = {name = "default_gravel_footstep", gain = 0.1}
+	})
+})
+
+core.register_node(":asteroid:ironore", {
+	description = "Asteroid Iron Ore",
+	tiles = {"asteroid_redstone.png^default_mineral_iron.png"},
+	is_ground_content = false,
+	groups = {cracky = 2},
+	drop = "default:iron_lump",
+	sounds = default.node_sound_stone_defaults()
+})
+
+core.register_node(":asteroid:copperore", {
+	description = "Asteroid Copper Ore",
+	tiles = {"asteroid_redstone.png^default_mineral_copper.png"},
+	is_ground_content = false,
+	groups = {cracky = 2},
+	drop = "default:copper_lump",
+	sounds = default.node_sound_stone_defaults()
+})
+
+core.register_node(":asteroid:goldore", {
+	description = "Asteroid Gold Ore",
+	tiles = {"asteroid_redstone.png^default_mineral_gold.png"},
+	is_ground_content = false,
+	groups = {cracky = 2},
+	drop = "default:gold_lump",
+	sounds = default.node_sound_stone_defaults()
+})
+
+core.register_node(":asteroid:diamondore", {
+	description = "Asteroid Diamond Ore",
+	tiles = {"asteroid_redstone.png^default_mineral_diamond.png"},
+	is_ground_content = false,
+	groups = {cracky = 1},
+	drop = "default:diamond",
+	sounds = default.node_sound_stone_defaults()
+})
+
+core.register_node(":asteroid:meseore", {
+	description = "Asteroid Mese Ore",
+	tiles = {"asteroid_redstone.png^default_mineral_mese.png"},
+	is_ground_content = false,
+	groups = {cracky = 1},
+	drop = "default:mese_crystal",
+	sounds = default.node_sound_stone_defaults()
+})
+
+core.register_node(":asteroid:atmos", {
+	description = "Comet Atmosphere",
+	drawtype = "glasslike",
+	tiles = {"asteroid_atmos.png"},
+	paramtype = "light",
+	sunlight_propagates = true,
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	is_ground_content = false,
+	use_texture_alpha = "blend",
+	post_effect_color = {a = 31, r = 241, g = 248, b = 255},
+	groups = {not_in_creative_inventory = 1},
+	drop = {}
+})
+
+-- Redsky plant nodes
+
+core.register_node(":mars:redgrass", {
+	description = "Red Grass",
+	drawtype = "plantlike",
+	waving = 1,
+	visual_scale = 1.3,
+	tiles = {"mars_redgrass.png"},
+	inventory_image = "mars_redgrass.png",
+	wield_image = "mars_redgrass.png",
+	paramtype = "light",
+	sunlight_propagates = true,
+	walkable = false,
+	buildable_to = true,
+	groups = {snappy = 3, flora = 1, attached_node = 1},
+	sounds = default.node_sound_leaves_defaults(),
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.5, -0.5, -0.5, 0.5, -5/16, 0.5}
+	}
+})
+
+core.register_node(":mars:redweed", {
+	description = "Red Weed",
+	drawtype = "plantlike",
+	waving = 1,
+	visual_scale = 1.3,
+	tiles = {"mars_redweed.png"},
+	inventory_image = "mars_redweed.png",
+	wield_image = "mars_redweed.png",
+	paramtype = "light",
+	sunlight_propagates = true,
+	walkable = false,
+	buildable_to = true,
+	groups = {snappy = 3, flora = 1, attached_node = 1},
+	sounds = default.node_sound_leaves_defaults(),
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.5, -0.5, -0.5, 0.5, -5/16, 0.5}
+	}
+})
+
+core.register_node(":mars:moss", {
+	description = "Martian Moss",
+	drawtype = "nodebox",
+	tiles = {"mars_moss.png"},
+	inventory_image = "mars_moss.png",
+	wield_image = "mars_moss.png",
+	paramtype = "light",
+	paramtype2 = "facedir",
+	use_texture_alpha = "clip",
+	sunlight_propagates = true,
+	walkable = false,
+	node_box = {
+		type = "fixed",
+		fixed = {-1/2, -1/2, -1/2, 1/2, -15/32, 1/2},
+	},
+	selection_box = {
+		type = "fixed",
+		fixed = {-1/2, -1/2, -1/2, 1/2, -15/32, 1/2},
+	},
+	groups = {snappy = 3, flora = 1, attached_node = 1},
+	sounds = default.node_sound_leaves_defaults()
+})
+
+-- mars grass
+
+core.register_node(":mars:grass_1", {
+	description = "Martian Grass",
+	drawtype = "plantlike",
+	waving = 1,
+	tiles = {"mars_grass_1.png"},
+	inventory_image = "mars_grass_3.png",
+	wield_image = "mars_grass_3.png",
+	paramtype = "light",
+	sunlight_propagates = true,
+	walkable = false,
+	buildable_to = true,
+	groups = {snappy = 3, flora = 1, attached_node = 1},
+	sounds = default.node_sound_leaves_defaults(),
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.5, -0.5, -0.5, 0.5, -5/16, 0.5}
+	},
+
+	on_place = function(itemstack, placer, pointed_thing)
+
+		-- place a random grass node
+		local stack = ItemStack("mars:grass_" .. math.random(5))
+		local ret = core.item_place(stack, placer, pointed_thing)
+
+		return ItemStack("mars:grass_1 "
+			.. itemstack:get_count() - (1 - ret:get_count()))
+	end
+})
+
+for i = 2, 5 do
+
+	core.register_node(":mars:grass_" .. i, {
+		description = "Martian Grass",
+		drawtype = "plantlike",
+		waving = 1,
+		tiles = {"mars_grass_" .. i .. ".png"},
+		inventory_image = "mars_grass_" .. i .. ".png",
+		wield_image = "mars_grass_" .. i .. ".png",
+		paramtype = "light",
+		sunlight_propagates = true,
+		walkable = false,
+		buildable_to = true,
+		drop = "mars:grass_1",
+		groups = {
+			snappy = 3, flora = 1, attached_node = 1,
+			not_in_creative_inventory = 1
+		},
+		sounds = default.node_sound_leaves_defaults(),
+		selection_box = {
+			type = "fixed",
+			fixed = {-0.5, -0.5, -0.5, 0.5, -5/16, 0.5}
+		}
+	})
+end
+
+-- Crystals
+
+local sbox = {
+	type = "fixed",
+	fixed = {-5/16, -8/16, -6/16, 5/16, -1/32, 5/16}}
+
+local crystal_list = {
+	{"ghost_crystal", "ghost_crystal.png"},
+	{"red_crystal", "red_crystal.png"},
+	{"rose_quartz", "rose_quartz.png"}}
+
+for i = 1, #crystal_list do -- in ipairs(crystal_list) do
+
+	local name = crystal_list[i][1]
+	local texture = crystal_list[i][2]
+
+	core.register_node(":crystals:" .. name .. "_1", {
+		description = "Glowing Crystal",
+		drawtype = "mesh",
+		mesh = "crystal_shape01.obj",
+		tiles = {"crystals_" .. texture},
+		wield_scale = {x = 7, y = 7, z = 7},
+		paramtype = "light",
+		paramtype2 = "facedir",
+		selection_box = sbox,
+		walkable = false,
+		light_source = 10,
+		use_texture_alpha = "blend",
+		visual_scale = 10,
+		groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 3},
+		sounds = default.node_sound_glass_defaults()
+	})
+
+	core.register_node(":crystals:" .. name .. "_2", {
+		description = "Glowing Crystal",
+		drawtype = "mesh",
+		mesh = "crystal_shape02.obj",
+		tiles = {"crystals_" .. texture},
+		wield_scale = {x = 7, y = 7, z = 7},
+		paramtype = "light",
+		paramtype2 = "facedir",
+		selection_box = sbox,
+		walkable = false,
+		light_source = 10,
+		use_texture_alpha = "blend",
+		visual_scale = 10,
+		groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 3},
+		sounds = default.node_sound_glass_defaults()
+	})
+end

mods/other_worlds/redsky_asteroids.lua

@@ -0,0 +1,72 @@
+
+-- Approximate realm limits
+
+local YMIN = otherworlds.settings.redsky_asteroids.YMIN or 6000
+local YMAX = otherworlds.settings.redsky_asteroids.YMAX or 7000
+
+-- Register on_generated function for this layer
+
+core.register_on_generated(
+		otherworlds.asteroids.create_on_generated(YMIN, YMAX, {
+
+	c_air = core.get_content_id("air"),
+	c_obsidian = core.get_content_id("default:obsidian"),
+	c_stone = core.get_content_id("asteroid:redstone"),
+	c_cobble = core.get_content_id("air"),
+	c_gravel = core.get_content_id("asteroid:redgravel"),
+	c_dust = core.get_content_id("asteroid:reddust"),
+	c_ironore = core.get_content_id("asteroid:ironore"),
+	c_copperore = core.get_content_id("asteroid:copperore"),
+	c_goldore = core.get_content_id("asteroid:goldore"),
+	c_diamondore = core.get_content_id("asteroid:diamondore"),
+	c_meseore = core.get_content_id("asteroid:meseore"),
+	c_waterice = core.get_content_id("default:ice"),
+	c_atmos = core.get_content_id("asteroid:atmos"),
+	c_snowblock = core.get_content_id("default:snowblock")
+}))
+
+-- Deco code for grass and crystal
+
+local TOPDECO = 500 -- how often deco appears on top of asteroid cobble
+
+local grass = {
+	"mars:grass_1", "mars:grass_2", "mars:grass_3", "mars:grass_4", "mars:grass_5"}
+
+local flower = {"mars:moss", "mars:redweed", "mars:redgrass"}
+
+local crystal = {
+	"crystals:ghost_crystal_1", "crystals:ghost_crystal_2",
+	"crystals:red_crystal_1", "crystals:red_crystal_2",
+	"crystals:rose_quartz_1", "crystals:rose_quartz_2"}
+
+local random = math.random
+
+-- Add surface decoration
+
+core.register_on_generated(function(minp, maxp)
+
+	if minp.y < YMIN or maxp.y > YMAX then return end
+
+	local bpos, ran
+	local coal = core.find_nodes_in_area_under_air(minp, maxp, {"asteroid:redgravel"})
+
+	for n = 1, #coal do
+
+		bpos = {x = coal[n].x, y = coal[n].y + 1, z = coal[n].z}
+
+		ran = random(TOPDECO)
+
+		if ran < 100 then -- grass
+
+			core.swap_node(bpos, {name = grass[random(#grass)]})
+
+		elseif ran >= 180 and ran <= 200 then -- other plants
+
+			core.swap_node(bpos, {name = flower[random(#flower)]})
+
+		elseif ran == TOPDECO then -- crystals
+
+			core.swap_node(bpos, {name = crystal[random(#crystal)]})
+		end
+	end
+end)

mods/other_worlds/settings.lua

@@ -0,0 +1,45 @@
+
+otherworlds.settings = {}
+
+-- general
+
+otherworlds.settings.crafting = {
+	-- set to false to remove crafting recipes
+	enable = core.settings:get_bool("otherworlds.crafting", true)
+}
+
+-- space_asteroids
+
+otherworlds.settings.space_asteroids = {
+	-- set to false to prevent space mapgen
+	enable = core.settings:get_bool("otherworlds.space", true),
+	-- minimum height of space layer
+	YMIN = tonumber(core.settings:get("otherworlds.space.ymin") or 20000),
+	-- maximum height for space layer
+	YMAX = tonumber(core.settings:get("otherworlds.space.ymax") or 25000)
+}
+
+-- redsky_asteroids
+
+otherworlds.settings.redsky_asteroids = {
+	-- set to false to prevent redsky mapgen
+	enable = core.settings:get_bool("otherworlds.redsky", true),
+	-- minimum height of redsky layer
+	YMIN = tonumber(core.settings:get("otherworlds.redsky.ymin") or 25000),
+	-- maximum height for redsky layer
+	YMAX = tonumber(core.settings:get("otherworlds.redsky.ymax") or 30000)
+}
+
+-- gravity
+
+otherworlds.settings.gravity = {
+	-- set to true to enable gravity
+	enable = core.settings:get_bool("otherworlds.gravity", false)
+}
+
+-- increase or decrease change of ores appearing in asteroids
+
+otherworlds.settings.ore_chance = {
+	-- default ore chance is multiplied by following value
+	value = tonumber(core.settings:get("otherworlds.ore_chance") or 27)
+}

mods/other_worlds/settingtypes.txt

@@ -0,0 +1,13 @@
+otherworlds.crafting (Enable crafting recipes) bool true
+
+otherworlds.space (Enable Space asteroids) bool true
+otherworlds.space.ymin (Space asteroid min height) int 20000
+otherworlds.space.ymax (Space asteroid max height) int 25000
+
+otherworlds.redsky (Enable Redsky asteroids) bool true
+otherworlds.redsky.ymin (Redsky asteroid min height) int 25000
+otherworlds.redsky.ymax (Redsky asteroid max height) int 31000
+
+otherworlds.gravity (Enable gravity) bool false
+
+otherworlds.ore_chance (Chance of finding ores) int 27

mods/other_worlds/skybox.lua

@@ -0,0 +1,220 @@
+
+-- Heights for skyboxes
+
+local underground_low = -31000
+local underground_high = -50
+local space_low = 5000
+local space_high = 5999
+local redsky_low = 6000
+local redsky_high = 6999
+local nether_low = -32000
+local nether_high = -31000
+
+-- Nether check
+
+local mod_nether = core.get_modpath("nether")
+
+if mod_nether then
+
+	nether_low = nether.DEPTH_FLOOR or -32000
+	nether_high = nether.DEPTH_CEILING or -31000
+	underground_low = nether_high
+
+	if core.get_modpath("climate_api") then
+		mod_nether = nil -- remove nether skybox for climate_api version
+	end
+end
+
+-- Holds name of skybox showing for each player
+
+local player_list = {}
+
+-- Outerspace skybox
+
+local spaceskybox = {
+	"sky_pos_z.png",
+	"sky_neg_z.png^[transformR180",
+	"sky_neg_y.png^[transformR270",
+	"sky_pos_y.png^[transformR270",
+	"sky_pos_x.png^[transformR270",
+	"sky_neg_x.png^[transformR90"}
+
+-- Redsky skybox
+
+local redskybox = {
+	"sky_pos_z.png^[colorize:#99000050",
+	"sky_neg_z.png^[transformR180^[colorize:#99000050",
+	"sky_neg_y.png^[transformR270^[colorize:#99000050",
+	"sky_pos_y.png^[transformR270^[colorize:#99000050",
+	"sky_pos_x.png^[transformR270^[colorize:#99000050",
+	"sky_neg_x.png^[transformR90^[colorize:#99000050"}
+
+-- Darkest space skybox
+
+local darkskybox = {
+	"sky_pos_z.png^[colorize:#00005070",
+	"sky_neg_z.png^[transformR180^[colorize:#00005070",
+	"sky_neg_y.png^[transformR270^[colorize:#00005070",
+	"sky_pos_y.png^[transformR270^[colorize:#00005070",
+	"sky_pos_x.png^[transformR270^[colorize:#00005070",
+	"sky_neg_x.png^[transformR90^[colorize:#00005070"}
+
+-- check for active pova mod
+
+local mod_pova = core.get_modpath("pova")
+
+-- gravity helper function
+
+local function set_gravity(player, grav)
+
+	if mod_pova then
+		pova.add_override(player:get_player_name(), "default", {gravity = grav})
+	else
+		player:set_physics_override({gravity = grav})
+	end
+end
+
+-- globalstep function runs every 2 seconds to show appropriate skybox
+
+local timer, timer2 = 0, 0
+
+core.register_globalstep(function(dtime)
+
+	timer = timer + dtime ; if timer < 2 then return end ; timer = 0
+	timer2 = timer2 + 2
+
+	local name, pos, current
+
+	for _, player in pairs(core.get_connected_players()) do
+
+		name = player:get_player_name()
+		pos = player:get_pos()
+		current = player_list[name] or ""
+
+		-- this just adds nether background outwith climate_api mod
+
+		if mod_nether and pos.y >= nether_low and pos.y <= nether_high
+		and (current ~= "nether" or (current == "nether" and timer2 > 6)) then
+
+			timer2 = 0 -- reset nether layer timer (every 10 seconds)
+
+			local base_col = current ~= "nether" and "#1D0504"
+			local ps, cn = core.find_nodes_in_area(
+					{x = pos.x - 6, y = pos.y - 6, z = pos.z - 6},
+					{x = pos.x + 6, y = pos.y + 6, z = pos.z + 6},
+					{"nether:rack", "nether:rack_deep", "nether:geode", "nether:geodelite"})
+
+			-- easy find nether layer via quick node count
+
+			if (cn["nether:rack"] or 0) > 100 then
+				base_col = "#1D0504"
+			elseif (cn["nether:rack_deep"] or 0) > 100 then
+				base_col = "#070916"
+			elseif (cn["nether:geode"] or 0) + (cn["nether:geodelite"] or 0)> 100 then
+				base_col = "#300530"
+			end
+
+			if base_col then
+				player:set_sky({type = "plain", base_color = base_col, clouds = false})
+			end
+
+			player:set_moon({visible = false})
+			player:set_stars({visible = false})
+			player:set_sun({visible = false, sunrise_visible = false})
+
+			player_list[name] = "nether"
+
+			if otherworlds.settings.gravity.enable then
+				set_gravity(player, 1.05)
+			end
+
+		-- Underground (above Nether limit)
+
+		elseif pos.y >= underground_low and pos.y <= underground_high
+		and current ~= "underground" then
+
+			player:set_sky({type = "plain", clouds = false, base_color = "#101010"})
+			player:set_moon({visible = false})
+			player:set_stars({visible = false})
+			player:set_sun({visible = false, sunrise_visible = false})
+
+			player_list[name] = "underground"
+
+			if otherworlds.settings.gravity.enable then
+				set_gravity(player, 1.0)
+			end
+
+		-- Earth
+
+		elseif pos.y > underground_high and pos.y < space_low
+		and current ~= "earth" then
+
+			player:set_sky({type = "regular", clouds = true})
+			player:set_moon({visible = true})
+			player:set_stars({visible = true})
+			player:set_sun({visible = true, scale = 1.0, sunrise_visible = true})
+
+			player_list[name] = "earth"
+
+			if otherworlds.settings.gravity.enable then
+				set_gravity(player, 1.0)
+			end
+
+		-- Outerspace
+
+		elseif pos.y >= space_low and pos.y <= space_high
+		and current ~= "space" then
+
+			player:set_sky({type = "skybox", textures = spaceskybox, clouds = false,
+					base_color = "#000000"})
+			player:set_moon({visible = false})
+			player:set_stars({visible = false})
+			player:set_sun({visible = true, scale = 1.0, sunrise_visible = false})
+
+			player_list[name] = "space"
+
+			if otherworlds.settings.gravity.enable then
+				set_gravity(player, 0.4)
+			end
+
+		-- Redsky
+
+		elseif pos.y >= redsky_low and pos.y <= redsky_high
+		and current ~= "redsky" then
+
+			player:set_sky({type = "skybox", textures = redskybox, clouds = false,
+					base_color = "#000000"})
+			player:set_moon({visible = false})
+			player:set_stars({visible = false})
+			player:set_sun({visible = true, scale = 0.5, sunrise_visible = false})
+
+			player_list[name] = "redsky"
+
+			if otherworlds.settings.gravity.enable then
+				set_gravity(player, 0.2)
+			end
+
+		-- Everything else above (the blackness)
+
+		elseif pos.y > redsky_high and current ~= "blackness" then
+
+			player:set_sky({type = "skybox", textures = darkskybox, clouds = false,
+					base_color = "#000000"})
+			player:set_moon({visible = false})
+			player:set_stars({visible = true})
+			player:set_sun({visible = true, scale = 0.1, sunrise_visible = false})
+
+			player_list[name] = "blackness"
+
+			if otherworlds.settings.gravity.enable then
+				set_gravity(player, 0.1)
+			end
+		end
+	end
+end)
+
+-- remove player from list when they leave
+
+core.register_on_leaveplayer(function(player)
+	player_list[player:get_player_name()] = nil
+end)

mods/other_worlds/space_asteroids.lua

@@ -0,0 +1,26 @@
+
+-- Approximate realm limits
+
+local YMIN = otherworlds.settings.space_asteroids.YMIN or 5000
+local YMAX = otherworlds.settings.space_asteroids.YMAX or 6000
+
+-- Register on_generated function for this layer
+
+core.register_on_generated(
+		otherworlds.asteroids.create_on_generated(YMIN, YMAX, {
+
+	c_air = core.get_content_id("air"),
+	c_obsidian = core.get_content_id("default:obsidian"),
+	c_stone = core.get_content_id("asteroid:stone"),
+	c_cobble = core.get_content_id("asteroid:cobble"),
+	c_gravel = core.get_content_id("asteroid:gravel"),
+	c_dust = core.get_content_id("asteroid:dust"),
+	c_ironore = core.get_content_id("default:stone_with_iron"),
+	c_copperore = core.get_content_id("default:stone_with_copper"),
+	c_goldore = core.get_content_id("default:stone_with_gold"),
+	c_diamondore = core.get_content_id("default:stone_with_diamond"),
+	c_meseore = core.get_content_id("default:stone_with_mese"),
+	c_waterice = core.get_content_id("default:ice"),
+	c_atmos = core.get_content_id("asteroid:atmos"),
+	c_snowblock = core.get_content_id("default:snowblock")
+}))