Working on adding a whole new set of trees to the mod

Most of the added code written by RealBadAngel
Also adds a couple of additional biome controls to jungle trees and conifers.
Also adds a text file describing the biome settings in a human-readable manner.

At present, this doesn't actually add anything new, it just refactors the
code to allow for more trees, and adds a bunch of biome definitions, tree
models, textures, etc. but no code to use them, yet.

README.md

@@ -1,16 +1,13 @@
 More trees!
 
-This mod adds more types of trees to the game
-at present, they consist of jungle trees and conifers
+This mod adds a whole bunch of new types of trees to the game
 
 Much of the code here came from cisoun's conifers mod and bas080's 
-jungle trees mod.
+jungle trees mod, and big contributions by RealBadAngel.
 
 Brought together into one mod and made L-systems compatible by Vanessa
 Ezekowitz.
 
-Jungle tree axioms/rules tweaked by RealBadAngel
-
 License:  WTFPL
 
 Dependencies:  plants_lib (or plantlife modpack), default

biome_defs.lua

@@ -0,0 +1,148 @@
+--[[
+
+-- Example biome definition:
+
+mytree_biome = {
+	surface = "default:dirt_with_grass",	-- must grow on these nodes only
+	avoid_nodes = {"default:tree"},		-- avoid spawning near these
+	avoid_radius = 12,			-- Keep this much room around the above avoid items
+	seed_diff = 12345,			-- perlin seed-diff for "generally able to grow plants here" control
+	neighbors = "default:dirt_with_grass",	-- this node must be adjacent to the node being spawned on
+	ncount = 8,				-- and there must be this many of them
+	depth = 1,				-- spawning surface must be no deeper than this
+	min_elevation = -5,			-- minimum elevation to spawn on
+	max_elevation = 10,			-- maximum elevation
+	near_nodes = {"default:water_source"},	-- trees will only spawn near these nodes
+	near_nodes_size = 10,			-- within this radius of at least one of them
+	near_nodes_count = 20,			-- there must ne this many of those nodes in the area
+	temp_min = 0.5,				-- minimum allowable temperature (highest temperature map perlin value)
+	temp_max = 0.1,				-- maximum allowable temperature (lowest perlin value)
+}
+]]--
+
+moretrees.jungletree_biome = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 12,
+	seed_diff = 329,
+	min_elevation = -5,
+	max_elevation = 10,
+	near_nodes = {"default:water_source"},
+	near_nodes_size = 15,
+	near_nodes_count = 10,
+--	temp_min = 0.05,
+}
+
+moretrees.conifer_biome = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 10,
+	seed_diff = 359,
+	min_elevation = 25,
+	temp_min = 0.9,
+	temp_max = 0.3,
+}
+
+moretrees.palm_biome = {
+	surface = "default:sand",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 5,
+	seed_diff = 330,
+	min_elevation = -1,
+	max_elevation = 1,
+	near_nodes = {"default:water_source"},
+	near_nodes_size = 15,
+	near_nodes_count = 10,
+	temp_min = 0.15,
+	temp_max = -0.15,
+}
+
+moretrees.apple_biome = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 15,
+	seed_diff = 331,
+	min_elevation = 1,
+	max_elevation = 10,
+	temp_min = 0.1,
+	temp_max = -0.15,
+}
+
+moretrees.oak_biome = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 15,
+	seed_diff = 332,
+	min_elevation = 0,
+	max_elevation = 10,
+	temp_min = 0.4,
+	temp_max = 0.2,
+}
+
+moretrees.sequoia_biome = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 10,
+	seed_diff = 333,
+	min_elevation = 0,
+	max_elevation = 10,
+	temp_min = 1,
+	temp_max = -0.4,
+}
+
+moretrees.birch_biome = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 5,
+	seed_diff = 334,
+	min_elevation = 10,
+	max_elevation = 15,
+	temp_min = 0.9,
+	temp_max = 0.3,
+}
+
+moretrees.spruce_biome = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 10,
+	seed_diff = 335,
+	min_elevation = 20,
+	temp_min = 0.9,
+	temp_max = 0.7,
+}
+
+moretrees.pine_biome = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 10,
+	seed_diff = 336,
+	near_nodes = {"default:water_source"},
+	near_nodes_size = 15,
+	near_nodes_count = 5,
+}
+
+moretrees.willow_biome = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 20,
+	seed_diff = 337,
+	min_elevation = -5,
+	max_elevation = 5,
+	near_nodes = {"default:water_source"},
+	near_nodes_size = 15,
+	near_nodes_count = 5,
+}
+
+moretrees.rubber_biome = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 20,
+	seed_diff = 338,
+	min_elevation = -5,
+	max_elevation = 5,
+	near_nodes = {"default:water_source"},
+	near_nodes_size = 15,
+	near_nodes_count = 10,
+	temp_min = -0.15,
+}
+

init.lua

@@ -1,15 +1,16 @@
 -- More trees!
 --
 -- This mod adds more types of trees to the game
--- at present, they consist of jungle trees and conifers
 --
--- Much of the node definitions here came from cisoun's conifers mod and
--- bas080's jungle trees mod.
+-- Some of the node definitions and textures came from cisoun's conifers mod 
+-- and bas080's jungle trees mod.
 --
 -- Brought together into one mod and made L-systems compatible by Vanessa
 -- Ezekowitz.  Thrown together on 2013-01-09 :-)
 --
--- Jungle tree axioms/rules tweaked by RealBadAngel
+-- Conifers and Jungle tree axioms/rules by Vanessa Ezekowitz, with the 
+-- latter having been tweaked by RealBadAngel, most others written by
+-- RealBadAngel.
 --
 -- License: WTFPL for all parts (code and textures)
 --
@@ -24,192 +25,72 @@
 --		in_biome = true
 --	end
 --	
--- We'll just save this for later use ;-)
+-- We'll just save this for possible later use ;-)
 --
-
 moretrees = {}
 
--- Jungletree init stuff:
+dofile(minetest.get_modpath("moretrees").."/crafts.lua")
+dofile(minetest.get_modpath("moretrees").."/node_defs.lua")
+dofile(minetest.get_modpath("moretrees").."/tree_models.lua")
+dofile(minetest.get_modpath("moretrees").."/biome_defs.lua")
 
-local JT_SPAWN_INTERVAL = 1000
-local JT_SPAWN_CHANCE = 100
+plantslib:register_generate_plant(moretrees.jungletree_biome, "moretrees:grow_jungletree")
+plantslib:register_generate_plant(moretrees.conifer_biome, "moretrees:grow_conifer")
 
-local JT_GROW_INTERVAL = 100
-local JT_GROW_CHANCE = 10
+--plantslib:register_generate_plant(moretrees.palm_biome, moretrees.palm_model)
 
-local JT_RADIUS = 15
-local JT_WATER_RADIUS = 15
-local JT_WATER_COUNT = 10
+--------------------------
+-- Other stuff
+--
+-- for backward compatibility with previous mods/code, jungle trees and
+-- firs ("conifers") L-Systems definitions are established separately.
+--
+--------------------------
 
-local jungletree_seed_diff = plantslib.plantlife_seed_diff
+-- Code that spawns jungle trees and firs ("conifers")
 
--- Conifers init stuff:
+moretrees.jt_axiom1 = "FFFA"
+moretrees.jt_rules_a1 = "FFF[&&-FBf[&&&Ff]^^^Ff][&&+FBFf[&&&FFf]^^^Ff][&&---FBFf[&&&Ff]^^^Ff][&&+++FBFf[&&&Ff]^^^Ff]F/A"
+moretrees.jt_rules_b1 = "[-Ff&f][+Ff&f]B"
 
-local CONIFERS_SPAWN_SAPLING_INTERVAL = 1000
-local CONIFERS_SPAWN_SAPLING_CHANCE = 100
+moretrees.jt_axiom2 = "FFFFFA"
+moretrees.jt_rules_a2 = "FFFFF[&&-FFFBF[&&&FFff]^^^FFf][&&+FFFBFF[&&&FFff]^^^FFf][&&---FFFBFF[&&&FFff]^^^FFf][&&+++FFFBFF[&&&FFff]^^^FFf]FF/A"
+moretrees.jt_rules_b2 = "[-FFf&ff][+FFf&ff]B"
 
-local CONIFERS_GROW_SAPLING_INTERVAL = 100
-local CONIFERS_GROW_SAPLING_CHANCE = 10
+moretrees.ct_rules_a1 = "FF[FF][&&-FBF][&&+FBF][&&---FBF][&&+++FBF]F/A"
+moretrees.ct_rules_b1 = "[-FBf][+FBf]"
 
-local CONIFERS_DISTANCE = 9 -- how far apart should conifer saplings spawn?
-local CONIFERS_ALTITUDE = 25
-
-local CONIFERS_REMOVE_TREES = false -- Remove trees above CONIFERS_ALTITUDE?
-local CONIFERS_RTREES_INTERVAL = 360
-local CONIFERS_RTREES_CHANCE = 10
-
-local conifers_seed_diff = plantslib.plantlife_seed_diff + 30
-
--- Spawning functions
-
-jungletrees_biome = {
-	surface = "default:dirt_with_grass",	-- must grow on grass only
-	avoid =	{"jungletree:sapling","default:jungletree"}, -- avoid spawning near these
-	radius = JT_RADIUS,			-- Keep this much room around the above avoid items
-	seed_diff = jungletree_seed_diff,	-- duh? :-)
-	neighbors = nil,			-- we don't care about neighbors
-	ncount = nil,				-- or the count thereof
-	depth = nil,				-- or depth of the spawn surface
-	min_elevation = -5,			-- must be 5m below sea level or higher
-	max_elevation = 10,			-- but no higher than 10m
-	near_nodes = {"default:water_source"},	-- Jungle trees must be near water
-	near_nodes_size = JT_WATER_RADIUS,	-- within this radius of it (default 25)
-	near_nodes_count = JT_WATER_COUNT,	-- with this many water nodes in the area
-	temp_min = nil,				-- don't care about temperature
-	temp_max = nil,				-- at either end of the scale
-	exec_funct = "moretrees:grow_jungletree" -- name of the function to execute to grow a tree
-}
-
-conifers_biome = {
-	surface = "default:dirt_with_grass",
-	avoid =	{"conifers:sapling", "conifers:trunk"},
-	radius = CONIFERS_DISTANCE,
-	seed_diff = conifers_seed_diff,														
-	neighbors = nil,
-	ncount = nil,
-	depth = nil,
-	min_elevation = CONIFERS_ALTITUDE,
-	max_elevation = nil,
-	near_nodes = nil,
-	near_nodes_size = nil,
-	near_nodes_count = nil,
-	temp_min = nil,
-	temp_max = nil,
-	exec_funct = "moretrees:grow_conifer"
-}
-
-plantslib:register_generate_plant(jungletrees_biome)
-plantslib:register_generate_plant(conifers_biome)
-
--- growing functions
-
-plantslib:grow_plants(
-	JT_GROW_INTERVAL,
-	JT_GROW_CHANCE,
-	"jungletree:sapling",
-	nil,
-	nil,
-	nil,
-	nil,
-	nil,
-	nil,
-	nil,
-	nil,
-	"moretrees:grow_jungletree",
-	jungletree_seed_diff
-)
-
-plantslib:grow_plants(
-	CONIFERS_GROW_SAPLING_INTERVAL,
-	CONIFERS_GROW_SAPLING_CHANCE,
-	"conifers:sapling",
-	nil,
-	nil,
-	nil,
-	nil,
-	nil,
-	nil,
-	nil,
-	nil,
-	"moretrees:grow_conifer",
-	conifers_seed_diff
-)
-
--- L-System Tree definitions
-
-local jungle_tree={
-	axiom=nil,
-	rules_a=nil,
-	rules_b=nil,
-	trunk="default:jungletree",
-	leaves="jungletree:leaves_green",
-	leaves2=nil,
-	leaves2_chance=nil,
-	angle=45,
-	iterations=nil,
-	random_level=2,
-	trunk_type=nil,
-	thin_branches=true;
-	fruit_chance=15,
-	fruit="vines:vine"
-}
-
-local jt_axiom1 = "FFFA"
-local jt_rules_a1 = "FFF[&&-FBf[&&&Ff]^^^Ff][&&+FBFf[&&&FFf]^^^Ff][&&---FBFf[&&&Ff]^^^Ff][&&+++FBFf[&&&Ff]^^^Ff]F/A"
-local jt_rules_b1 = "[-Ff&f][+Ff&f]B"
-
-local jt_axiom2 = "FFFFFA"
-local jt_rules_a2 = "FFFFF[&&-FFFBF[&&&FFff]^^^FFf][&&+FFFBFF[&&&FFff]^^^FFf][&&---FFFBFF[&&&FFff]^^^FFf][&&+++FFFBFF[&&&FFff]^^^FFf]FF/A"
-local jt_rules_b2 = "[-FFf&ff][+FFf&ff]B"
-
-local conifer_tree={
-	axiom="FFFAF[&&-F][&&+F][&&---F][&&+++F]Fff",
-	rules_a=nil,
-	rules_b=nil,
-	trunk="conifers:trunk",
-	leaves=nil,
-	angle=45,
-	iterations=7,
-	random_level=5,
-	thin_trunks=true
-}
-
-local ct_rules_a1 = "FF[FF][&&-FBF][&&+FBF][&&---FBF][&&+++FBF]F/A"
-local ct_rules_b1 = "[-FBf][+FBf]"
-
-local ct_rules_a2 = "FF[FF][&&-FBF][&&+FBF][&&---FBF][&&+++FBF]F/A"
-local ct_rules_b2 = "[-fB][+fB]"
-
--- Code that actually spawns the trees!
+moretrees.ct_rules_a2 = "FF[FF][&&-FBF][&&+FBF][&&---FBF][&&+++FBF]F/A"
+moretrees.ct_rules_b2 = "[-fB][+fB]"
 
 function moretrees:grow_jungletree(pos)
 	local r1 = math.random(2)
 	local r2 = math.random(3)
 	if r1 == 1 then
-		jungle_tree["leaves2"] = "jungletree:leaves_red"
+		moretrees.jungletree_model.leaves2 = "jungletree:leaves_red"
 	else 
-		jungle_tree["leaves2"] = "jungletree:leaves_yellow"
+		moretrees.jungletree_model.leaves2 = "jungletree:leaves_yellow"
 	end
-	jungle_tree["leaves2_chance"] = math.random(25, 75)
+	moretrees.jungletree_model.leaves2_chance = math.random(25, 75)
 
 	if r2 == 1 then
-		jungle_tree["trunk_type"] = "single"
-		jungle_tree["iterations"] = 2
-		jungle_tree["axiom"] = jt_axiom1
-		jungle_tree["rules_a"] = jt_rules_a1
-		jungle_tree["rules_b"] = jt_rules_b1
+		moretrees.jungletree_model.trunk_type = "single"
+		moretrees.jungletree_model.iterations = 2
+		moretrees.jungletree_model.axiom = moretrees.jt_axiom1
+		moretrees.jungletree_model.rules_a = moretrees.jt_rules_a1
+		moretrees.jungletree_model.rules_b = moretrees.jt_rules_b1
 	elseif r2 == 2 then
-		jungle_tree["trunk_type"] = "double"
-		jungle_tree["iterations"] = 4
-		jungle_tree["axiom"] = jt_axiom2
-		jungle_tree["rules_a"] = jt_rules_a2
-		jungle_tree["rules_b"] = jt_rules_b2
+		moretrees.jungletree_model.trunk_type = "double"
+		moretrees.jungletree_model.iterations = 4
+		moretrees.jungletree_model.axiom = moretrees.jt_axiom2
+		moretrees.jungletree_model.rules_a = moretrees.jt_rules_a2
+		moretrees.jungletree_model.rules_b = moretrees.jt_rules_b2
 	elseif r2 == 3 then
-		jungle_tree["trunk_type"] = "crossed"
-		jungle_tree["iterations"] = 4
-		jungle_tree["axiom"] = jt_axiom2
-		jungle_tree["rules_a"] = jt_rules_a2
-		jungle_tree["rules_b"] = jt_rules_b2
+		moretrees.jungletree_model.trunk_type = "crossed"
+		moretrees.jungletree_model.iterations = 4
+		moretrees.jungletree_model.axiom = moretrees.jt_axiom2
+		moretrees.jungletree_model.rules_a = moretrees.jt_rules_a2
+		moretrees.jungletree_model.rules_b = moretrees.jt_rules_b2
 	end
 
 	minetest.env:remove_node(pos)
@@ -217,21 +98,21 @@ function moretrees:grow_jungletree(pos)
 	for leaf in ipairs(leaves) do
 			minetest.env:remove_node(leaves[leaf])
 	end
-	minetest.env:spawn_tree(pos,jungle_tree)
+	minetest.env:spawn_tree(pos, moretrees.jungletree_model)
 end
 
 function moretrees:grow_conifer(pos)
 	if math.random(2) == 1 then
-		conifer_tree["leaves"]="conifers:leaves"
+		moretrees.conifer_model.leaves="conifers:leaves"
 	else
-		conifer_tree["leaves"]="conifers:leaves_special"
+		moretrees.conifer_model.leaves="conifers:leaves_special"
 	end
 	if math.random(2) == 1 then
-		conifer_tree["rules_a"] = ct_rules_a1
-		conifer_tree["rules_b"] = ct_rules_b1
+		moretrees.conifer_model.rules_a = moretrees.ct_rules_a1
+		moretrees.conifer_model.rules_b = moretrees.ct_rules_b1
 	else
-		conifer_tree["rules_a"] = ct_rules_a2
-		conifer_tree["rules_b"] = ct_rules_b2
+		moretrees.conifer_model.rules_a = moretrees.ct_rules_a2
+		moretrees.conifer_model.rules_b = moretrees.ct_rules_b2
 	end
 
 	minetest.env:remove_node(pos)
@@ -239,12 +120,13 @@ function moretrees:grow_conifer(pos)
 	for leaf in ipairs(leaves) do
 			minetest.env:remove_node(leaves[leaf])
 	end
-	minetest.env:spawn_tree(pos,conifer_tree)
+	minetest.env:spawn_tree(pos,moretrees.conifer_model)
 end
 
--- Other stuff
+
 
 -- Should we remove all the trees above the conifers altitude?
+
 if CONIFERS_REMOVE_TREES == true then
 	minetest.register_abm({
 		nodenames = {
@@ -264,176 +146,4 @@ if CONIFERS_REMOVE_TREES == true then
 	})
 end
 
--- Nodes for jungle trees
-
-minetest.register_node(":jungletree:sapling", {
-	description = "Jungle Tree Sapling",	
-	drawtype = "plantlike",	
-	visual_scale = 1.0,	
-	tiles = {"jungletree_sapling.png"},	
-	inventory_image = "jungletree_sapling.png",	
-	wield_image = "default_sapling.png",	
-	paramtype = "light",	
-	walkable = false,	
-	groups = {snappy=2,dig_immediate=3,flammable=2},
-})
-
-local leaves = {"green","yellow","red"}
-for color = 1, 3 do
-	local leave_name = ":jungletree:leaves_"..leaves[color]
-	minetest.register_node(leave_name, {
-		description = "Jungle Tree Leaves",
-		drawtype = "allfaces_optional",
-		tiles = {"jungletree_leaves_"..leaves[color]..".png"},
-		paramtype = "light",
-		groups = {snappy=3, leafdecay=3, flammable=2},
-		drop = {
-			max_items = 1,
-			items = {
-				{
-					-- player will get sapling with 1/20 chance
-					items = {'jungletree:sapling'},
-					rarity = 20,
-				},
-				{
-					-- player will get leaves only if he get no saplings,
-					-- this is because max_items is 1
-					items = {"jungletree:leaves_"..leaves[color]},
-				}
-			}
-		},
-		sounds = default.node_sound_leaves_defaults(),
-	})
-end
-
--- Nodes for conifers
-
-minetest.register_node(":conifers:trunk", {
-	description = "Conifer trunk",
-	tile_images = { 
-		"conifers_trunktop.png", 
-		"conifers_trunktop.png", 
-		"conifers_trunk.png", 
-		"conifers_trunk.png", 
-		"conifers_trunk.png", 
-		"conifers_trunk.png" 
-	},
-	paramtype = "facedir_simple",
-	is_ground_content = true,
-	groups = {
-		tree = 1,
-		snappy = 2,
-		choppy = 2,
-		oddly_breakable_by_hand = 1,
-		flammable = 2
-	},
-	sounds = default.node_sound_wood_defaults()
-})
-
-minetest.register_node(":conifers:trunk_reversed", {
-	description = "Conifer reversed trunk",
-	tile_images = { 
-		"conifers_trunk_reversed.png", 
-		"conifers_trunk_reversed.png",
-		"conifers_trunktop.png", 
-		"conifers_trunktop.png", 
-		"conifers_trunk_reversed.png", 
-		"conifers_trunk_reversed.png" 
-	},
-	--inventory_image = minetest.inventorycube(
-		--"conifers_trunk.png",
-		--"conifers_trunktop.png",
-		--"conifers_trunk.png"
-	--),
-	paramtype = "facedir_simple",
-	material = minetest.digprop_woodlike(1.0),
-	legacy_facedir_simple = true,
-	is_ground_content = true,
-	groups = {
-		tree = 1,
-		snappy = 2,
-		choppy = 2,
-		oddly_breakable_by_hand = 1,
-		flammable = 2
-	},
-	sounds = default.node_sound_wood_defaults()
-})
-
-minetest.register_node(":conifers:leaves", {
-	description = "Conifer leaves",
-	drawtype = "allfaces_optional",
-	visual_scale = 1.3,
-	tile_images = { "conifers_leaves.png" },
-	paramtype = "light",
-	groups = {
-		snappy = 3,
-		leafdecay = 3,
-		flammable = 2
-	},
-	drop = {
-		max_items = 1,
-		items = {
-			{
-				-- player will get sapling with 1/20 chance
-				items = {'conifers:sapling'},
-				rarity = 20,
-			},
-			{
-				-- player will get leaves only if he get no saplings,
-				-- this is because max_items is 1
-				items = {'conifers:leaves'},
-			}
-		}
-	},
-	sounds = default.node_sound_leaves_defaults()
-})
-
-minetest.register_node(":conifers:leaves_special", {
-	description = "Bright conifer leaves",
-	drawtype = "allfaces_optional",
-	visual_scale = 1.3,
-	tile_images = { "conifers_leaves_special.png" },
-	paramtype = "light",
-	groups = {
-		snappy = 3,
-		leafdecay = 3,
-		flammable = 2
-	},
-	drop = {
-		max_items = 1,
-		items = {
-			{
-				-- player will get sapling with 1/20 chance
-				items = {'conifers:sapling'},
-				rarity = 20,
-			},
-			{
-				-- player will get leaves only if he get no saplings,
-				-- this is because max_items is 1
-				items = {'conifers:leaves'},
-			}
-		}
-	},
-	sounds = default.node_sound_leaves_defaults()
-})
-
-minetest.register_node(":conifers:sapling", {
-	description = "Conifer sapling",
-	drawtype = "plantlike",
-	visual_scale = 1.0,
-	tile_images = {"conifers_sapling.png"},
-	inventory_image = "conifers_sapling.png",
-	wield_image = "conifers_sapling.png",
-	paramtype = "light",
-	walkable = false,
-	groups = {
-		snappy = 2,
-		dig_immediate = 3,
-		flammable = 2
-	},
-	sounds = default.node_sound_defaults(),
-})
-
-dofile(minetest.get_modpath("moretrees").."/crafts.lua")
-
 print("[Moretrees] Loaded (2013-01-18)")

node_defs.lua

@@ -0,0 +1,287 @@
+leaves = {
+	{"beech",		"Beech Leaves"},
+	{"apple_tree", 		"Apple Tree Leaves"},
+	{"oak",			"Oak Leaves"},
+	{"sequoia",		"Sequoia Needles"},
+	{"birch",		"Birch Leaves"},
+	{"palm",		"Palm Leaves"},
+	{"spruce",		"Spruce Needles"},
+	{"pine",		"Pine Needles"},
+	{"willow",		"Willow Leaves"},
+	{"rubber_tree",		"Rubber Tree Leaves"},
+}
+
+for i in ipairs(leaves) do
+	local name = leaves[i]
+	minetest.register_node("moretrees:"..leaves[i][1].."_leaves", {
+		description = leaves[i][2],
+		drawtype = "allfaces_optional",
+		visual_scale = 1.3,
+		tiles = { "moretrees_"..leaves[i][1].."_leaves.png" },
+		paramtype = "light",
+		groups = {tree=1, snappy=3, flammable=2},
+		sounds = default.node_sound_leaves_defaults(),
+	})
+	end
+	
+trees = {
+	{"beech",	"Beech",	nil,		nil,		nil				},
+	{"apple_tree",	"Apple Tree",	nil,		nil,		nil				},
+	{"oak",		"Oak",		"acorn",	"Acorn",	{-0.2, -0.5, -0.2, 0.2, 0, 0.2}	},
+	{"sequoia",	"Sequoia",	nil,		nil,		nil				},
+	{"birch",	"Birch",	nil,		nil,		nil				},
+	{"palm",	"Palm",		"coconut",	"Coconut",	{-0.2, -0.5, -0.2, 0.2, 0, 0.2}	},
+	{"spruce",	"Spruce",	"spruce_cone",	"Spruce Cone",	{-0.2, -0.5, -0.2, 0.2, 0, 0.2}	},
+	{"pine",	"Pine",		"pine_cone",	"Pine Cone",	{-0.2, -0.5, -0.2, 0.2, 0, 0.2}	},
+	{"willow",	"Willow",	nil,		nil,		nil				},
+	{"rubber_tree",	"Rubber Tree",	nil,		nil,		nil				},
+}
+
+moretrees.avoidnodes = {}
+
+table.insert(moretrees.avoidnodes, "default:jungletree")
+table.insert(moretrees.avoidnodes, "jungletree:sapling")
+table.insert(moretrees.avoidnodes, "conifers:trunk")
+table.insert(moretrees.avoidnodes, "conifers:sapling")
+
+for i in ipairs(trees) do
+	local treename = trees[i][1]
+	local treedesc = trees[i][2]
+	local fruit = trees[i][3]
+	local fruitdesc = trees[i][4]
+	local selbox = trees[i][5]
+
+	table.insert(moretrees.avoidnodes, "moretrees:"..treename.."_trunk")
+	table.insert(moretrees.avoidnodes, "moretrees:"..treename.."_sapling")
+
+	minetest.register_node("moretrees:"..treename.."_trunk", {
+		description = treedesc.." Trunk",
+		tiles = {
+			"moretrees_"..treename.."_top.png",
+			"moretrees_"..treename.."_top.png",
+			"moretrees_"..treename..".png"
+		},
+		is_ground_content = true,
+		groups = {tree=1,snappy=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
+		sounds = default.node_sound_wood_defaults(),
+	})
+
+	minetest.register_node("moretrees:"..treename.."_planks", {
+		description = treedesc.." Planks",
+		tiles = {"moretrees_"..treename.."_wood.png"},
+		is_ground_content = true,
+		groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1},
+		sounds = default.node_sound_wood_defaults(),
+	})
+
+	minetest.register_node("moretrees:"..treename.."_sapling", {
+	description = treedesc.." Sapling",
+	drawtype = "plantlike",
+	visual_scale = 1.0,
+	tiles = {"moretrees_"..treename.."_sapling.png"},
+	inventory_image = "moretrees_"..treename.."_sapling.png",
+	wield_image = "moretrees_"..treename.."_sapling.png",
+	paramtype = "light",
+	walkable = false,
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.3, -0.5, -0.3, 0.3, 0.35, 0.3}
+	},
+	groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1},
+	sounds = default.node_sound_defaults(),
+	})
+	
+	if (fruit ~= nil) then
+		minetest.register_node("moretrees:"..fruit, {
+			description = fruitdesc,
+			drawtype = "plantlike",
+			visual_scale = 0.8,
+			tiles = { "moretrees_"..fruit..".png" },
+			inventory_image = "moretrees_"..fruit..".png",
+			paramtype = "light",
+			sunlight_propagates = true,
+			walkable = false,
+			selection_box = {
+				type = "fixed",
+					fixed = selbox
+				},
+			groups = {fleshy=3,dig_immediate=3,flammable=2},
+			sounds = default.node_sound_defaults(),
+		})
+	end
+
+end
+
+--- For backward compatibility, jungle trees and firs ("conifers") are defined
+--- separately.
+
+-- Nodes for jungle trees
+
+minetest.register_node(":jungletree:sapling", {
+	description = "Jungle Tree Sapling",	
+	drawtype = "plantlike",	
+	visual_scale = 1.0,	
+	tiles = {"jungletree_sapling.png"},	
+	inventory_image = "jungletree_sapling.png",	
+	wield_image = "default_sapling.png",	
+	paramtype = "light",	
+	walkable = false,	
+	groups = {snappy=2,dig_immediate=3,flammable=2},
+})
+
+local leaves = {"green","yellow","red"}
+for color = 1, 3 do
+	local leave_name = ":jungletree:leaves_"..leaves[color]
+	minetest.register_node(leave_name, {
+		description = "Jungle Tree Leaves",
+		drawtype = "allfaces_optional",
+		tiles = {"jungletree_leaves_"..leaves[color]..".png"},
+		paramtype = "light",
+		groups = {snappy=3, leafdecay=3, flammable=2},
+		drop = {
+			max_items = 1,
+			items = {
+				{
+					-- player will get sapling with 1/20 chance
+					items = {'jungletree:sapling'},
+					rarity = 20,
+				},
+				{
+					-- player will get leaves only if he get no saplings,
+					-- this is because max_items is 1
+					items = {"jungletree:leaves_"..leaves[color]},
+				}
+			}
+		},
+		sounds = default.node_sound_leaves_defaults(),
+	})
+end
+
+-- Nodes for conifers
+
+minetest.register_node(":conifers:trunk", {
+	description = "Conifer trunk",
+	tile_images = { 
+		"conifers_trunktop.png", 
+		"conifers_trunktop.png", 
+		"conifers_trunk.png", 
+		"conifers_trunk.png", 
+		"conifers_trunk.png", 
+		"conifers_trunk.png" 
+	},
+	paramtype = "facedir_simple",
+	is_ground_content = true,
+	groups = {
+		tree = 1,
+		snappy = 2,
+		choppy = 2,
+		oddly_breakable_by_hand = 1,
+		flammable = 2
+	},
+	sounds = default.node_sound_wood_defaults()
+})
+
+minetest.register_node(":conifers:trunk_reversed", {
+	description = "Conifer reversed trunk",
+	tile_images = { 
+		"conifers_trunk_reversed.png", 
+		"conifers_trunk_reversed.png",
+		"conifers_trunktop.png", 
+		"conifers_trunktop.png", 
+		"conifers_trunk_reversed.png", 
+		"conifers_trunk_reversed.png" 
+	},
+	--inventory_image = minetest.inventorycube(
+		--"conifers_trunk.png",
+		--"conifers_trunktop.png",
+		--"conifers_trunk.png"
+	--),
+	paramtype = "facedir_simple",
+	material = minetest.digprop_woodlike(1.0),
+	legacy_facedir_simple = true,
+	is_ground_content = true,
+	groups = {
+		tree = 1,
+		snappy = 2,
+		choppy = 2,
+		oddly_breakable_by_hand = 1,
+		flammable = 2
+	},
+	sounds = default.node_sound_wood_defaults()
+})
+
+minetest.register_node(":conifers:leaves", {
+	description = "Conifer leaves",
+	drawtype = "allfaces_optional",
+	visual_scale = 1.3,
+	tile_images = { "conifers_leaves.png" },
+	paramtype = "light",
+	groups = {
+		snappy = 3,
+		leafdecay = 3,
+		flammable = 2
+	},
+	drop = {
+		max_items = 1,
+		items = {
+			{
+				-- player will get sapling with 1/20 chance
+				items = {'conifers:sapling'},
+				rarity = 20,
+			},
+			{
+				-- player will get leaves only if he get no saplings,
+				-- this is because max_items is 1
+				items = {'conifers:leaves'},
+			}
+		}
+	},
+	sounds = default.node_sound_leaves_defaults()
+})
+
+minetest.register_node(":conifers:leaves_special", {
+	description = "Bright conifer leaves",
+	drawtype = "allfaces_optional",
+	visual_scale = 1.3,
+	tile_images = { "conifers_leaves_special.png" },
+	paramtype = "light",
+	groups = {
+		snappy = 3,
+		leafdecay = 3,
+		flammable = 2
+	},
+	drop = {
+		max_items = 1,
+		items = {
+			{
+				-- player will get sapling with 1/20 chance
+				items = {'conifers:sapling'},
+				rarity = 20,
+			},
+			{
+				-- player will get leaves only if he get no saplings,
+				-- this is because max_items is 1
+				items = {'conifers:leaves'},
+			}
+		}
+	},
+	sounds = default.node_sound_leaves_defaults()
+})
+
+minetest.register_node(":conifers:sapling", {
+	description = "Conifer sapling",
+	drawtype = "plantlike",
+	visual_scale = 1.0,
+	tile_images = {"conifers_sapling.png"},
+	inventory_image = "conifers_sapling.png",
+	wield_image = "conifers_sapling.png",
+	paramtype = "light",
+	walkable = false,
+	groups = {
+		snappy = 2,
+		dig_immediate = 3,
+		flammable = 2
+	},
+	sounds = default.node_sound_defaults(),
+})
+

tree_biomes.txt

@@ -0,0 +1,18 @@
+
+		Elevation	Temperature	Nearness to	Nearby	What nodes		Perlin		Avoid
+Tree type	   (m)		(approx., °C)	some node	water	to spawn on		seed diff	radius
+-----------------------------------------------------------------------------------------------------------------------
+jungle tree	- 5 to +10	 above +26	water, 15	  10	dirt_with_grass		329		 7
+fir (conifers)	 above +25	-20 to +10	  n/a		n/a	dirt_with_grass		359		 8
+palm		- 1 to + 1	+18 to +32	water, 15	  10	sand			330		 5
+apple		+ 1 to +10	+23 to +32	  n/a		n/a	dirt_with grass		331		15
+oak		  0 to +10	+ 4 to +16	  n/a		n/a	dirt_with grass		332		15
+sequoia		  0 to +10	-30 to +50	  n/a		n/a	dirt_with grass		333		10
+birch		+10 to +15	-20 to +10	  n/a		n/a	dirt_with grass		334		 5
+spruce		 above +20	-20 to +10	  n/a		n/a	dirt_with grass		335		10
+pine		    n/a		    n/a		water, 15	   5	dirt_with grass		336		10
+willow		- 5 to + 5	    n/a		water, 15	   5	dirt_with grass		337		20
+rubber		- 5 to + 5	 above +32	water, 15	  10	dirt_with_grass		338		20
+
+beech (default)	    n/a		    n/a		  n/a		n/a	dirt_with_grass		2		10
+

tree_models.lua

@@ -0,0 +1,212 @@
+beech_model={
+axiom="FFFFFBFB",
+rules_a="[&&&GGF[++^Fd][--&Fd]//Fd[+^Fd][--&Fd]]////[&&&GGF[++^Fd][--&Fd]//Fd[+^Fd][--&Fd]]////[&&&GGF[++^Fd][--&Fd]//Fd[+^Fd][--&Fdd]]",
+rules_b="[&&&F[++^Fd][--&d]//d[+^d][--&d]]////[&&&F[++^Fd][--&d]//d[+^d][--&d]]////[&&&F[++^Fd][--&Fd]//d[+^d][--&d]]",
+rules_c="/",
+rules_d="F",
+trunk="moretrees:beech_trunk",
+leaves="moretrees:beech_leaves",
+angle=30,
+iterations=2,
+random_level=0,
+trunk_type="single";
+thin_branches=true;
+}
+
+apple_tree_model={
+axiom="FFFFFAFFBF",
+rules_a="[&&&FFFFF&&FFFF][&&&++++FFFFF&&FFFF][&&&----FFFFF&&FFFF]",
+rules_b="[&&&++FFFFF&&FFFF][&&&--FFFFF&&FFFF][&&&------FFFFF&&FFFF]",
+trunk="moretrees:apple_tree_trunk",
+leaves="moretrees:apple_tree_leaves",
+angle=30,
+iterations=2,
+random_level=0,
+trunk_type="single",
+thin_branches=true;
+fruit="default:apple",
+fruit_chance=15,
+}
+
+oak_model={
+axiom="FFFFFFA",
+rules_a="[&FFBFA]////[&BFFFA]////[&FBFFA]",
+rules_b="[&FFFA]////[&FFFA]////[&FFFA]",
+trunk="moretrees:oak_trunk",
+leaves="moretrees:oak_leaves",
+angle=30,
+iterations=5,
+random_level=2,
+trunk_type="crossed";
+thin_branches=false;
+fruit="moretrees:acorn",
+fruit_chance=3,
+}
+
+sequoia_model={
+axiom="FFFFFFFFFFddccA///cccFddcFA///ddFcFA/cFFddFcdBddd/A/ccdcddd/ccAddddcFBcccAccFdFcFBcccc/BFdFFcFFdcccc/B",
+rules_a="[&&&GGF[++^FFdd][--&Fddd]//Fdd[+^Fd][--&Fdd]]////[&&&GGF[++^FFdd][--&Fddd]//Fdd[+^Fd][--&Fdd]]////[&&&GGF[++^FFdd][--&Fddd]//Fdd[+^Fd][--&Fdd]]",
+rules_b="[&&&GGF[++^Fdd][--&Fdd]//dd[+^d][--&Fd]]////[&&&GGF[++^Fdd][--&Fdd]//dd[+^d][--&Fd]]////[&&&GGF[++^Fdd][--&Fdd]//dd[+^d][--&Fd]]",
+rules_c="/",
+rules_d="F",
+trunk="moretrees:sequoia_trunk",
+leaves="moretrees:sequoia_leaves",
+angle=30,
+iterations=2,
+random_level=0,
+trunk_type="crossed",
+thin_branches=true
+}
+
+birch_model1={
+axiom="FFFFFdddccA/FFFFFFcA/FFFFFFcB",
+rules_a="[&&&dddd^^ddddddd][&&&---dddd^^ddddddd][&&&+++dddd^^ddddddd][&&&++++++dddd^^ddddddd]",
+rules_b="[&&&ddd^^ddddd][&&&---ddd^^ddddd][&&&+++ddd^^ddddd][&&&++++++ddd^^ddddd]",
+rules_c="/",
+rules_d="F",
+trunk="moretrees:birch_trunk",
+leaves="moretrees:birch_leaves",
+angle=30,
+iterations=2,
+random_level=0,
+trunk_type="single",
+thin_branches=true
+}
+
+birch_model2={
+axiom="FFFdddccA/FFFFFccA/FFFFFccB",
+rules_a="[&&&dFFF^^FFFdd][&&&---dFFF^^FFFdd][&&&+++dFFF^^FFFdd][&&&++++++dFFF^^FFFdd]",
+rules_b="[&&&dFF^^FFFd][&&&---dFFF^^FFFd][&&&+++dFF^^FFFd][&&&++++++dFF^^FFFd]",
+rules_c="/",
+rules_d="F",
+trunk="moretrees:birch_trunk",
+leaves="moretrees:birch_leaves",
+angle=30,
+iterations=2,
+random_level=0,
+trunk_type="single",
+thin_branches=true
+}
+
+palm_model={
+axiom="FFccc&FFFFFdddFA//A//A//A//A//A",
+rules_a="[&fb&bbb[++f--&ffff&ff][--f++&ffff&ff]&ffff&bbbb&b]",
+rules_b="f",
+rules_c="/",
+rules_d="F",
+trunk="moretrees:palm_trunk",
+leaves="moretrees:palm_leaves",
+angle=30,
+iterations=2,
+random_level=0,
+trunk_type="single",
+thin_branches=true,
+fruit="moretrees:coconut",
+fruit_chance=0
+}
+
+spruce_model1={
+axiom="FFFFFAFFFFFFBFFFFFFCFFFFFFDFFFFFF[&&&F^^FF][&&&++F^^FF][&&&++++F^^FF][&&&++++++F^^FF][&&&--F^^FF][&&&----F^^FF][FFFFf]",
+rules_a="[&&&FFFFFF^^FFF][&&&++FFFFFF^^FFF][&&&++++FFFFFF^^FFF][&&&++++++FFFFFF^^FFF][&&&--FFFFFF^^FFF][&&&----FFFFFF^^FFF]",
+rules_b="[&&&FFFFF^^FFF][&&&++FFFFF^^FFF][&&&++++FFFFF^^FFF][&&&++++++FFFFF^^FFF][&&&--FFFFF^^FFF][&&&----FFFFF^^FFF]",
+rules_c="[&&&FFFF^^FFF][&&&++FFFF^^FFF][&&&++++FFFF^^FFF][&&&++++++FFFF^^FFF][&&&--FFFF^^FFF][&&&----FFFF^^FFF]",
+rules_d="[&&&FFF^^FFF][&&&++FFF^^FFF][&&&++++FFF^^FFF][&&&++++++FFF^^FFF][&&&--FFF^^FFF][&&&----FFF^^FFF]",
+trunk="moretrees:spruce_trunk",
+leaves="moretrees:spruce_leaves",
+angle=30,
+iterations=2,
+random_level=0,
+trunk_type="crossed",
+thin_branches=true,
+fruit="moretrees:cone",
+fruit_chance=8
+}
+
+spruce_model2={
+axiom="FFFFFFBFFFFFFCFFFFFFDFFFFFF[&&&F^^FF][&&&++F^^FF][&&&++++F^^FF][&&&++++++F^^FF][&&&--F^^FF][&&&----F^^FF][FFFFf]",
+rules_b="[&&&FFFFF^^FFF][&&&++FFFFF^^FFF][&&&++++FFFFF^^FFF][&&&++++++FFFFF^^FFF][&&&--FFFFF^^FFF][&&&----FFFFF^^FFF]",
+rules_c="[&&&FFFF^^FFF][&&&++FFFF^^FFF][&&&++++FFFF^^FFF][&&&++++++FFFF^^FFF][&&&--FFFF^^FFF][&&&----FFFF^^FFF]",
+rules_d="[&&&FFF^^FFF][&&&++FFF^^FFF][&&&++++FFF^^FFF][&&&++++++FFF^^FFF][&&&--FFF^^FFF][&&&----FFF^^FFF]",
+trunk="moretrees:spruce_trunk",
+leaves="moretrees:spruce_leaves",
+angle=30,
+iterations=2,
+random_level=0,
+trunk_type="crossed",
+thin_branches=true,
+fruit="moretrees:cone",
+fruit_chance=8
+}
+
+pine_model={
+axiom="FFFFFcccdddB///cFdFB////cFdFB///cFdFB///cFdFA///cFdFA///cFdFB[FF]f",
+rules_a="[&&&TTTT[++^TFdd][--&TFd]//Tdd[+^Fd][--&Fdd]]",
+rules_b="[&&&TTT[++^Fdd][--&Fdd]//dd[+^d][--&Fd]]",
+rules_c="/",
+rules_d="F",
+trunk="moretrees:pine_trunk",
+leaves="moretrees:pine_leaves",
+angle=30,
+iterations=2,
+random_level=0,
+trunk_type="single",
+thin_branches=true,
+fruit="moretrees:pine_cone",
+fruit_chance=8
+}
+
+willow_model={
+axiom="FFFFFFFFccA",
+rules_a="[&FF&FFFF&&F&FFFFFFFdddd][**&FF&FFFF&&F&FFFFFFFdddd][//&FF&FFFF&&F&FFFFFFFdddd][////&FF&FFFF&&F&FFFFFFFdddd][//////&FF&FFFF&&F&FFFFFFFdddd][////////&FF&FFFF&&F&FFFFFFFdddd]",
+rules_c="/",
+rules_d="F",
+trunk="moretrees:willow_trunk",
+leaves="moretrees:willow_leaves",
+angle=30,
+iterations=2,
+random_level=0,
+trunk_type="crossed",
+thin_branches=true
+}
+
+rubber_tree={
+axiom="FFFFA",
+rules_a="[&FFBFA]////[&BFFFA]////[&FBFFA]",
+rules_b="[&FFA]////[&FFA]////[&FFA]",
+trunk="moretrees:rubber_tree_trunk",
+leaves="moretrees:rubber_tree_leaves",
+angle=35,
+iterations=3,
+random_level=1,
+trunk_type="double",
+thin_branches=true
+}
+
+moretrees.jungletree_model={
+	axiom=nil,
+	rules_a=nil,
+	rules_b=nil,
+	trunk="default:jungletree",
+	leaves="jungletree:leaves_green",
+	leaves2=nil,
+	leaves2_chance=nil,
+	angle=45,
+	iterations=nil,
+	random_level=2,
+	trunk_type=nil,
+	thin_branches=true;
+	fruit_chance=15,
+	fruit="vines:vine"
+}
+
+moretrees.conifer_model={
+	axiom="FFFAF[&&-F][&&+F][&&---F][&&+++F]Fff",
+	rules_a=nil,
+	rules_b=nil,
+	trunk="conifers:trunk",
+	leaves=nil,
+	angle=45,
+	iterations=7,
+	random_level=5,
+	thin_trunks=true
+}