license fixups: use LGPL 3.0 for code, CC-by-SA 4.0 for media

if moretrees is not in spawn-saplings mode.

.luacheckrc

@@ -0,0 +1,17 @@
+unused_args = false
+allow_defined_top = true
+
+read_globals = {
+	"DIR_DELIM",
+	"minetest", "core",
+	"dump",
+	"vector", "nodeupdate",
+	"VoxelManip", "VoxelArea",
+	"PseudoRandom", "ItemStack",
+	"intllib",
+	"default",
+	table = { fields = { "copy", "getn" } },
+	"biome_lib",
+	"stairs", "stairsplus",
+}
+

LICENSE

@@ -3,399 +3,618 @@ Minetest mod moretrees
 
 All source code:
 	© 2013, Vanessa Ezekowitz <vanessaezekowitz@gmail.com>
-	Published under the terms and conditions of the WTFPL.
 Date & cocos palm code (date_palm.lua, cocos_palm.lua)
 	© 2016, Rogier <rogier777@gmail.com>
-	Published under the terms and conditions of the WTFPL.
-All date & date palm textures, date-based food, cocos flower & green coconuts:
+All date & date palm textures, date-based food, cocos flower & green coconuts,
+and all poplar textures:
 	© 2016, Rogier <rogier777@gmail.com>
-	Published under the terms and conditions of CC-BY-SA-3.0 Unported.
 	- Three of the date palm textures are modifications of existing moretrees textures
 	- The green coconuts are a modification of the brown coconut
 	- The date cake batter is a modification of the acorn muffin batter
-All sapling textures (textures/*_sapling.png):
+All other sapling textures (textures/*_sapling.png):
 	© 2013, Tim Huppertz <mitroman@naturalnet.de>
-	Published under the terms and conditions of CC-BY-SA-3.0 Unported.
 All other textures:
 	© 2013, Vanessa Ezekowitz <vanessaezekowitz@gmail.com>
-	Published under the terms and conditions of CC-BY-SA-3.0 Unported.
 
--------------------------------------------------------------------------------
+###############################################################################
 
-            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
-                    Version 2, December 2004
+License for all code: LGPL 3.0
+License for all media and all other assets:  CC-by-SA 4.0
 
- Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+###############################################################################
 
- Everyone is permitted to copy and distribute verbatim or modified
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+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
 
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biome_defs.lua

@@ -124,18 +124,6 @@ moretrees.willow_biome = {
 	max_count = 5,
 }
 
-moretrees.acacia_biome = {
-	surface = { "default:dirt_with_grass", "default:dirt_with_dry_grass", "default:desert_sand" },
-	avoid_nodes = moretrees.avoidnodes,
-	avoid_radius = 15,
-	seed_diff = 1,
-	rarity = 50,
-	max_count = 15,
-	plantlife_limit = -1,
-	humidity_min = 0.3,
-	humidity_max = 0,
-}
-
 moretrees.rubber_tree_biome = {
 	surface = "default:dirt_with_grass",
 	avoid_nodes = moretrees.avoidnodes,
@@ -196,6 +184,97 @@ moretrees.cedar_biome = {
 	max_count = 10,
 }
 
+
+-- Poplar requires a lot of water.
+moretrees.poplar_biome = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 6,
+	seed_diff = 341,
+	min_elevation = 0,
+	max_elevation = 50,
+	near_nodes = {"default:water_source"},
+	near_nodes_size = 15,
+	near_nodes_vertical = 5,
+	near_nodes_count = 1,
+	humidity_min = -0.7,
+	humidity_max = -1,
+	rarity = 50,
+	max_count = 15,
+}
+
+-- The humidity requirement it quite restrictive (apparently).
+-- Spawn an occasional poplar elsewhere.
+moretrees.poplar_biome_2 = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 6,
+	seed_diff = 341,
+	min_elevation = 0,
+	max_elevation = 50,
+	near_nodes = {"default:water_source"},
+	near_nodes_size = 15,
+	near_nodes_vertical = 4,
+	near_nodes_count = 10,
+	humidity_min = 0.1,
+	humidity_max = -0.6,
+	rarity = 50,
+	max_count = 1,
+}
+
+-- Subterranean lakes provide enough water for poplars to grow
+moretrees.poplar_biome_3 = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 6,
+	seed_diff = 342,
+	min_elevation = 0,
+	max_elevation = 50,
+	near_nodes = {"default:water_source"},
+	near_nodes_size = 1,
+	near_nodes_vertical = 25,
+	near_nodes_count = 1,
+	humidity_min = -0.5,
+	humidity_max = -1,
+	rarity = 0,
+	max_count = 30,
+}
+
+moretrees.poplar_small_biome = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 4,
+	seed_diff = 343,
+	min_elevation = 0,
+	max_elevation = 50,
+	near_nodes = {"default:water_source"},
+	near_nodes_size = 10,
+	near_nodes_vertical = 5,
+	near_nodes_count = 1,
+	humidity_min = -0.7,
+	humidity_max = -1,
+	rarity = 50,
+	max_count = 10,
+}
+
+moretrees.poplar_small_biome_2 = {
+	surface = "default:dirt_with_grass",
+	avoid_nodes = moretrees.avoidnodes,
+	avoid_radius = 4,
+	seed_diff = 343,
+	min_elevation = 0,
+	max_elevation = 50,
+	near_nodes = {"default:water_source"},
+	near_nodes_size = 10,
+	near_nodes_vertical = 4,
+	near_nodes_count = 5,
+	humidity_min = 0.1,
+	humidity_max = -0.6,
+	rarity = 50,
+	max_count = 3,
+}
+
+
 moretrees.fir_biome = {
 	surface = "default:dirt_with_grass",
 	avoid_nodes = moretrees.avoidnodes,

cocos_palm.lua

@@ -28,7 +28,7 @@ ftrunk.after_destruct = function(pos, oldnode)
 		-- minetest.dig_node(coconutpos) does not cause nearby coconuts to be dropped :-( ...
 		--minetest.dig_node(coconutpos)
 		local items = minetest.get_node_drops(minetest.get_node(coconutpos).name)
-		minetest.remove_node(coconutpos)
+		minetest.swap_node(coconutpos, biome_lib.air)
 		for _, itemname in pairs(items) do
 			minetest.add_item(coconutpos, itemname)
 		end
@@ -56,7 +56,7 @@ local coconut_regrow_abm_spec = {
 			local coconutpos = {x=pos.x+dx, y=pos.y, z=pos.z+dz}
 			local coconutnode = minetest.get_node(coconutpos)
 			if coconutnode.name == "air" then
-				minetest.set_node(coconutpos, {name="moretrees:coconut_0"})
+				minetest.swap_node(coconutpos, {name="moretrees:coconut_0"})
 			end
 		end
 	end
@@ -85,7 +85,7 @@ minetest.register_abm({
 		local gen
 		local count = 0
 		for _,gen in pairs(genlist) do
-			minetest.set_node(gen.pos, {name = "moretrees:coconut_3"})
+			minetest.swap_node(gen.pos, {name = "moretrees:coconut_3"})
 			count = count + 1
 			if count == 4 then
 				break
@@ -115,7 +115,7 @@ local coconut_growfn = function(pos, elapsed)
 					minetest.add_item(pos, itemname)
 				end
 			end
-			minetest.remove_node(pos)
+			minetest.swap_node(pos, biome_lib.air)
 		end
 	else
 		-- Grow coconuts to the next stage
@@ -240,7 +240,7 @@ if moretrees.coconuts_convert_existing_palms then
 				minetest.swap_node(tpos, {name = "moretrees:palm_fruit_trunk"})
 				coconuts = minetest.find_nodes_in_area({x=tpos.x-1, y=tpos.y, z=tpos.z-1}, {x=tpos.x+1, y=tpos.y, z=tpos.z+1}, "moretrees:coconut")
 				for _, coconutpos in pairs(coconuts) do
-					minetest.set_node(coconutpos, {name = "moretrees:coconut_3"})
+					minetest.swap_node(coconutpos, {name = "moretrees:coconut_3"})
 				end
 			end
 		end,

crafts.lua

@@ -3,14 +3,6 @@ local S = moretrees.intllib
 for i in ipairs(moretrees.treelist) do
 	local treename = moretrees.treelist[i][1]
 
-	minetest.register_craft({
-		output = "moretrees:"..treename.."_trunk 2",
-		recipe = {
-			{"moretrees:"..treename.."_trunk_sideways"},
-			{"moretrees:"..treename.."_trunk_sideways"}
-		}
-	})
-
 	minetest.register_craft({
 		type = "shapeless",
 		output = "moretrees:"..treename.."_planks 4",
@@ -19,14 +11,6 @@ for i in ipairs(moretrees.treelist) do
 		}
 	})
 
-	minetest.register_craft({
-		type = "shapeless",
-		output = "moretrees:"..treename.."_planks 4",
-		recipe = {
-			"moretrees:"..treename.."_trunk_sideways"
-		}
-	})
-
 	minetest.register_craft({
 		type = "fuel",
 		recipe = "moretrees:"..treename.."_sapling",

date_palm.lua

@@ -10,7 +10,6 @@
 -- (e.g. eaten by birds, ...), and a small fraction will drop as items.
 
 -- © 2016, Rogier <rogier777@gmail.com>
--- License: WTFPL
 
 local S = moretrees.intllib
 
@@ -22,6 +21,15 @@ local flowers_wither_ichance = 3
 
 -- implementation
 
+local dates_regrow_prob
+if moretrees.dates_regrow_unpollinated_percent <= 0 then
+	dates_regrow_prob = 0
+elseif moretrees.dates_regrow_unpollinated_percent >= 100 then
+	dates_regrow_prob = 1
+else
+	dates_regrow_prob = 1 - math.pow(moretrees.dates_regrow_unpollinated_percent/100, 1/flowers_wither_ichance)
+end
+
 -- Make the date palm fruit trunk a real trunk (it is generated as a fruit)
 local trunk = minetest.registered_nodes["moretrees:date_palm_trunk"]
 local ftrunk = {}
@@ -40,7 +48,7 @@ ftrunk.after_destruct = function(pos, oldnode)
 	for _,datespos in pairs(dates) do
 		-- minetest.dig_node(datespos) does not cause nearby dates to be dropped :-( ...
 		local items = minetest.get_node_drops(minetest.get_node(datespos).name)
-		minetest.remove_node(datespos)
+		minetest.swap_node(datespos, biome_lib.air)
 		for _, itemname in pairs(items) do
 			minetest.add_item(datespos, itemname)
 		end
@@ -83,15 +91,15 @@ local date_regrow_abm_spec = {
 			local datenode = minetest.get_node(datepos)
 			if datenode.name == "air" then
 				if node.name == "moretrees:date_palm_ffruit_trunk" then
-					minetest.set_node(datepos, {name="moretrees:dates_f0"})
+					minetest.swap_node(datepos, {name="moretrees:dates_f0"})
 				else
-					minetest.set_node(datepos, {name="moretrees:dates_m0"})
+					minetest.swap_node(datepos, {name="moretrees:dates_m0"})
 				end
 			end
 		end
 	end
 }
-if moretrees.dates_regrow then
+if moretrees.dates_regrow_pollinated or moretrees.dates_regrow_unpollinated_percent > 0 then
 	minetest.register_abm(date_regrow_abm_spec)
 end
 
@@ -117,9 +125,9 @@ minetest.register_abm({
 		for _,genpos in pairs(dates1) do
 			if math.random(100) <= 20 then
 				if type == "m" then
-					minetest.set_node(genpos, {name = "moretrees:dates_n"})
+					minetest.swap_node(genpos, {name = "moretrees:dates_n"})
 				else
-					minetest.set_node(genpos, {name = "moretrees:dates_f4"})
+					minetest.swap_node(genpos, {name = "moretrees:dates_f4"})
 				end
 			end
 		end
@@ -127,9 +135,9 @@ minetest.register_abm({
 		for _,genpos in pairs(dates2) do
 			if math.random(100) <= 5 then
 				if type == "m" then
-					minetest.set_node(genpos, {name = "moretrees:dates_n"})
+					minetest.swap_node(genpos, {name = "moretrees:dates_n"})
 				else
-					minetest.set_node(genpos, {name = "moretrees:dates_f4"})
+					minetest.swap_node(genpos, {name = "moretrees:dates_f4"})
 				end
 			end
 		end
@@ -214,13 +222,18 @@ local function find_fruit_trunks_near(ftpos, sect)
 		return nil
 	end
 
+	local basevec = { x = ftpos.x + 2 * sect.x * sect_hr,
+			  y = ftpos.y,
+			  z = ftpos.z + 2 * sect.z * sect_hr}
+	-- find_nodes_in_area is limited to 82^3, make sure to not overrun it
+	local sizevec = { x = sect_hr, y = sect_vr, z = sect_hr }
+	if sect_hr * sect_hr * sect_vr > 41^3 then
+		sizevec = vector.apply(sizevec, function(a) return math.min(a, 41) end)
+	end
+
 	local all_palms = minetest.find_nodes_in_area(
-				{ x = ftpos.x + 2 * sect.x * sect_hr - sect_hr,
-				  y = ftpos.y - sect_vr,
-				  z = ftpos.z + 2 * sect.z * sect_hr - sect_hr },
-				{ x = ftpos.x + 2 * sect.x * sect_hr + sect_hr,
-				  y = ftpos.y + sect_vr,
-				  z = ftpos.z + 2 * sect.z * sect_hr + sect_hr },
+				vector.subtract(basevec, sizevec),
+				vector.add(basevec, sizevec),
 				{"moretrees:date_palm_mfruit_trunk", "moretrees:date_palm_ffruit_trunk"})
 
 	-- Collect different palms in separate lists.
@@ -276,11 +289,11 @@ end
 local function dates_print_search_stats(log)
 	local stats
 	if sect_search_stats.count > 0 then
-		stats = string.format("Male date tree searching stats: count: %d/%d:  average: %d µs  (%d..%d)",
+		stats = string.format("Male date tree searching stats: searches: %d/%d:  average: %d µs  (%d..%d)",
 			sect_search_stats.count, sect_search_stats.count + sect_search_stats.skip,
 			sect_search_stats.sum/sect_search_stats.count, sect_search_stats.min, sect_search_stats.max)
 	else
-		stats = string.format("Male date tree searching stats: (not yet available)")
+		stats = string.format("Male date tree searching stats: searches: 0/0:  average: (no searches yet)")
 	end
 	if log then
 		minetest.log("action", "[moretrees] " .. stats)
@@ -517,16 +530,21 @@ local dates_growfn = function(pos, elapsed)
 	local action
 	if not node then
 		return
-	elseif not moretrees.dates_regrow then
+	elseif not moretrees.dates_regrow_pollinated and dates_regrow_prob == 0 then
+		-- Regrowing of dates is disabled.
 		if string.find(node.name, "moretrees:dates_f") then
 			minetest.swap_node(pos, {name="moretrees:dates_f4"})
 		elseif string.find(node.name, "moretrees:dates_m") then
 			minetest.swap_node(pos, {name="moretrees:dates_n"})
 		else
-			minetest.remove_node(pos)
+			minetest.swap_node(pos, biome_lib.air)
 		end
 		return
-	elseif node.name == "moretrees:dates_f0" and find_male_blossom(pos) then
+	elseif node.name == "moretrees:dates_f0" and math.random(100) <= 100 * dates_regrow_prob then
+		-- Dates grow unpollinated
+		minetest.swap_node(pos, {name="moretrees:dates_f1"})
+		action = "nopollinate"
+	elseif node.name == "moretrees:dates_f0" and moretrees.dates_regrow_pollinated and find_male_blossom(pos) then
 		-- Pollinate flowers
 		minetest.swap_node(pos, {name="moretrees:dates_f1"})
 		action = "pollinate"
@@ -559,7 +577,7 @@ local dates_growfn = function(pos, elapsed)
 	elseif string.match(node.name, "n$") then
 		-- Remove stems.
 		if math.random(stems_drop_ichance) == 1 then
-			minetest.remove_node(pos)
+			minetest.swap_node(pos, biome_lib.air)
 			return "stemdrop"
 		end
 		action = "nostemdrop"
@@ -614,13 +632,13 @@ local dates_growfn_profiling = function(pos, elapsed)
 		local sum = 0
 		local count = 0
 		if sect_search_stats.count > 0 and stat.pollinate and stat.pollinate.count > 0 then
-			print(string.format("\t%-10s: %6d (%4.1f%%): %6dus (%d..%d)",
+			print(string.format("\t%-12s: %6d (%4.1f%%): %6dus (%d..%d)",
 				"search", sect_search_stats.count,
 				100*sect_search_stats.count/stat.pollinate.count,
 				sect_search_stats.sum/sect_search_stats.count,
 				sect_search_stats.min, sect_search_stats.max))
 		else
-			print(string.format("\t%-10s: %6d (%4.1f%%): %6dus (%d..%d)",
+			print(string.format("\t%-12s: %6d (%4.1f%%): %6dus (%d..%d)",
 				"search", sect_search_stats.count,
 				0, 0, 0, 0))
 		end
@@ -628,13 +646,13 @@ local dates_growfn_profiling = function(pos, elapsed)
 			if action ~= "count" then
 				count = count + data.count
 				sum = sum + data.sum
-				print(string.format("\t%-10s: %6d (%4.1f%%): %6dus (%d..%d)",
+				print(string.format("\t%-12s: %6d (%4.1f%%): %6dus (%d..%d)",
 					action, data.count,
 					100*data.count/stat.count, data.sum/data.count,
 					data.min, data.max))
 			end
 		end
-		print(string.format("\t%-10s: %6d ( 100%%): %6dus",
+		print(string.format("\t%-12s: %6d ( 100%%): %6dus",
 			"TOTAL", count, sum/count))
 	end
 end
@@ -696,14 +714,15 @@ for _,suffix in ipairs({"f0", "f1", "f2", "f3", "f4", "m0", "fn", "n"}) do
 			fixed = {-0.3, -0.3, -0.3, 0.3, 3.5, 0.3}
 		},
 		on_timer = dates_growfn,
-		on_construct = moretrees.dates_regrow and dates_starttimer,
+		on_construct = (moretrees.dates_regrow_pollinated or moretrees.dates_regrow_unpollinated_percent > 0)
+				and dates_starttimer,
 
 	}
 	minetest.register_node("moretrees:dates_"..suffix, datedef)
 end
 
 -- If regrowing was previously disabled, but is enabled now, make sure timers are started for existing dates
-if moretrees.dates_regrow then
+if moretrees.dates_regrow_pollinated or moretrees.dates_regrow_unpollinated_percent > 0 then
 	local spec = {
 		name = "moretrees:restart_dates_regrow_timer",
 		nodenames = "group:moretrees_dates",

default_settings.txt

@@ -10,18 +10,19 @@ moretrees.enable_date_palm		= true
 moretrees.enable_cedar			= true
 moretrees.enable_rubber_tree	= true
 moretrees.enable_willow			= true
-moretrees.enable_acacia			= true
 moretrees.enable_birch			= true
 moretrees.enable_spruce			= true
 moretrees.enable_jungle_tree	= true
 moretrees.enable_fir			= true
+moretrees.enable_poplar			= true
 moretrees.enable_beech			= false
 
 -- set this to true to make moretrees spawn saplings at mapgen time instead
 -- of fully-grown trees, which will grow into full trees after a very short
--- delay.  This reduces mapgen lag in some situations.
+-- delay.  This reduces mapgen lag in some situations, and fixes situations
+-- where the mapgen conflicts with the tree generator.
 
-moretrees.spawn_saplings		= false
+moretrees.spawn_saplings		= true
 
 -- Set this to true to allow defining stairs/slabs/etc.  If Moreblocks is
 -- installed, this will use that mod's Stairs Plus component.  Otherwise, it 
@@ -75,7 +76,29 @@ moretrees.coconut_item_drop_ichance	= 10 		-- inverse probability of ripe coconu
 
 -- Date palm settings
 
-moretrees.dates_regrow			= true
+-- Suggested configuration alternatives:
+-- - Dates grow only when pollinated:
+--   - Set dates_regrow_pollinated to true
+--   - Set dates_regrow_unpollinated_percent to 0
+-- - Dates grow without pollination. Pollination disabled:
+--   - Set dates_regrow_pollinated to false
+--   - Set dates_regrow_unpollinated_percent to some larger positive value, e.g. 95
+-- - Dates grow, but more and faster if male flowers are nearby
+--   - Set dates_regrow_pollinated to true
+--   - Set dates_regrow_unpollinated_percent to some small positive value, e.g. 33
+--   - Optional but recommended: Reduce the pollination distance, e.g. to 30
+
+-- Note that it should not be necessary to disable pollination for performance
+-- reasons. A lot of effort has gone into ensuring that date growing will not cause lag.
+--
+-- If lag is suspected, use the chat command '/dates_stats' to obtain the male dates
+-- search time, as well as the counts of total number of searches requested and the
+-- number of searches actually performed.
+
+moretrees.dates_regrow_pollinated	= true		-- Enable pollination. If enabled, male trees are required for dates to grow.
+							-- If disabled, dates_regrow_unpollinated_percent must be non-zero for dates to regrow.
+moretrees.dates_regrow_unpollinated_percent	= 0	-- Percentage of female dates becoming dates without being pollinated.
+							-- If 0, dates_regrow_pollinated must be enabled for dates to grow.
 moretrees.dates_female_percent		= 57		-- Ratio of female to male trees - tune this to improve # of generated trees that actually bear fruit
 							-- ~57% gives near optimal results for groups of 3 random trees, while it is only slightly suboptimal
 							-- for groups of 2 and 4 random trees (~2% less fruit than optimal).
@@ -83,7 +106,7 @@ moretrees.dates_female_percent		= 57		-- Ratio of female to male trees - tune th
 							-- So 57% is optimal for small groups of trees. As larger groups have more female palms anyway, a
 							-- less than optimal proportion of female to male trees is not a problem.
 moretrees.dates_pollination_distance	= 120
-moretrees.dates_blossom_search_time_treshold = 1000	-- If average male blossom search time exceeds this, start limiting the search load.
+moretrees.dates_blossom_search_time_treshold = 1000	-- If average male blossom search time (in microseconds) exceeds this, start limiting the search load.
 moretrees.dates_blossom_search_iload = 10		-- Inverse fraction of CPU time that male blossom searching search may consume.
 							-- As searching a large area (radius: dates_pollination_distance/3 per attempt) can cause lag,
 							-- this limits the search frequency server-wide so that the impact on server lag is minimised

init.lua

@@ -2,18 +2,16 @@
 --
 -- This mod adds more types of trees to the game
 --
--- Some of the node definitions and textures came from cisoun's conifers 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.
 --
--- Firs and Jungle tree axioms/rules by Vanessa Ezekowitz, with the 
+-- Firs and Jungle tree axioms/rules by Vanessa Dannenberg, with the
 -- latter having been tweaked by RealBadAngel, most other axioms/rules written
 -- by RealBadAngel.
 --
--- License: WTFPL for all parts (code and textures, including those copied
--- from the the old jungletree and conifers mods).
 
 moretrees = {}
 
@@ -51,7 +49,8 @@ end
 
 -- infinite stacks checking
 
-if minetest.get_modpath("unified_inventory") or not minetest.setting_getbool("creative_mode") then
+if minetest.get_modpath("unified_inventory") or not
+		minetest.settings:get_bool("creative_mode") then
 	moretrees.expect_infinite_stacks = false
 else
 	moretrees.expect_infinite_stacks = true
@@ -91,12 +90,13 @@ if moretrees.spawn_saplings then
 	moretrees.spawn_cedar_object = "moretrees:cedar_sapling_ongen"
 	moretrees.spawn_rubber_tree_object = "moretrees:rubber_tree_sapling_ongen"
 	moretrees.spawn_willow_object = "moretrees:willow_sapling_ongen"
-	moretrees.spawn_acacia_object = "moretrees:acacia_sapling_ongen"
 	moretrees.spawn_birch_object = "moretrees:birch_sapling_ongen"
 	moretrees.spawn_spruce_object = "moretrees:spruce_sapling_ongen"
 	moretrees.spawn_jungletree_object = "moretrees:jungletree_sapling_ongen"
 	moretrees.spawn_fir_object = "moretrees:fir_sapling_ongen"
 	moretrees.spawn_fir_snow_object = "snow:sapling_pine"
+	moretrees.spawn_poplar_object = "moretrees:poplar_sapling_ongen"
+	moretrees.spawn_poplar_small_object = "moretrees:poplar_small_sapling_ongen"
 else
 	moretrees.spawn_beech_object = moretrees.beech_model
 	moretrees.spawn_apple_tree_object = moretrees.apple_tree_model
@@ -107,12 +107,13 @@ else
 	moretrees.spawn_cedar_object = moretrees.cedar_model
 	moretrees.spawn_rubber_tree_object = moretrees.rubber_tree_model
 	moretrees.spawn_willow_object = moretrees.willow_model
-	moretrees.spawn_acacia_object = moretrees.acacia_model
 	moretrees.spawn_birch_object = "moretrees.grow_birch"
 	moretrees.spawn_spruce_object = "moretrees.grow_spruce"
 	moretrees.spawn_jungletree_object = "moretrees.grow_jungletree"
 	moretrees.spawn_fir_object = "moretrees.grow_fir"
 	moretrees.spawn_fir_snow_object = "moretrees.grow_fir_snow"
+	moretrees.spawn_poplar_object = moretrees.poplar_model
+	moretrees.spawn_poplar_small_object = moretrees.poplar_small_model
 end
 
 if moretrees.enable_beech then
@@ -152,10 +153,6 @@ if moretrees.enable_willow then
 	biome_lib:register_generate_plant(moretrees.willow_biome, moretrees.spawn_willow_object)
 end
 
-if moretrees.enable_acacia then
-	biome_lib:register_generate_plant(moretrees.acacia_biome, moretrees.spawn_acacia_object)
-end
-
 if moretrees.enable_birch then
 	biome_lib:register_generate_plant(moretrees.birch_biome, moretrees.spawn_birch_object)
 end
@@ -175,10 +172,18 @@ if moretrees.enable_fir then
 	end
 end
 
+if moretrees.enable_poplar then
+	biome_lib:register_generate_plant(moretrees.poplar_biome, moretrees.spawn_poplar_object)
+	biome_lib:register_generate_plant(moretrees.poplar_biome_2, moretrees.spawn_poplar_object)
+	biome_lib:register_generate_plant(moretrees.poplar_biome_3, moretrees.spawn_poplar_object)
+	biome_lib:register_generate_plant(moretrees.poplar_small_biome, moretrees.spawn_poplar_small_object)
+	biome_lib:register_generate_plant(moretrees.poplar_small_biome_2, moretrees.spawn_poplar_small_object)
+end
+
 -- Code to spawn a birch tree
 
 function moretrees.grow_birch(pos)
-	minetest.remove_node(pos)
+	minetest.swap_node(pos, biome_lib.air)
 	if math.random(1,2) == 1 then
 		minetest.spawn_tree(pos, moretrees.birch_model1)
 	else
@@ -189,7 +194,7 @@ end
 -- Code to spawn a spruce tree
 
 function moretrees.grow_spruce(pos)
-	minetest.remove_node(pos)
+	minetest.swap_node(pos, biome_lib.air)
 	if math.random(1,2) == 1 then
 		minetest.spawn_tree(pos, moretrees.spruce_model1)
 	else
@@ -218,7 +223,7 @@ function moretrees.grow_jungletree(pos)
 	local r2 = math.random(3)
 	if r1 == 1 then
 		moretrees.jungletree_model.leaves2 = "moretrees:jungletree_leaves_red"
-	else 
+	else
 		moretrees.jungletree_model.leaves2 = "moretrees:jungletree_leaves_yellow"
 	end
 	moretrees.jungletree_model.leaves2_chance = math.random(25, 75)
@@ -243,10 +248,10 @@ function moretrees.grow_jungletree(pos)
 		moretrees.jungletree_model.rules_b = moretrees.jt_rules_b2
 	end
 
-	minetest.remove_node(pos)
+	minetest.swap_node(pos, biome_lib.air)
 	local leaves = minetest.find_nodes_in_area({x = pos.x-1, y = pos.y, z = pos.z-1}, {x = pos.x+1, y = pos.y+10, z = pos.z+1}, "default:leaves")
 	for leaf in ipairs(leaves) do
-			minetest.remove_node(leaves[leaf])
+			minetest.swap_node(leaves[leaf], biome_lib.air)
 	end
 	minetest.spawn_tree(pos, moretrees.jungletree_model)
 end
@@ -270,10 +275,10 @@ function moretrees.grow_fir(pos)
 	moretrees.fir_model.iterations = 7
 	moretrees.fir_model.random_level = 5
 
-	minetest.remove_node(pos)
+	minetest.swap_node(pos, biome_lib.air)
 	local leaves = minetest.find_nodes_in_area({x = pos.x, y = pos.y, z = pos.z}, {x = pos.x, y = pos.y+5, z = pos.z}, "default:leaves")
 	for leaf in ipairs(leaves) do
-			minetest.remove_node(leaves[leaf])
+		minetest.swap_node(leaves[leaf], biome_lib.air)
 	end
 	minetest.spawn_tree(pos,moretrees.fir_model)
 end
@@ -297,10 +302,10 @@ function moretrees.grow_fir_snow(pos)
 	moretrees.fir_model.iterations = 2
 	moretrees.fir_model.random_level = 2
 
-	minetest.remove_node(pos)
+	minetest.swap_node(pos, biome_lib.air)
 	local leaves = minetest.find_nodes_in_area({x = pos.x, y = pos.y, z = pos.z}, {x = pos.x, y = pos.y+5, z = pos.z}, "default:leaves")
 	for leaf in ipairs(leaves) do
-			minetest.remove_node(leaves[leaf])
+			minetest.swap_node(leaves[leaf], biome_lib.air)
 	end
 	minetest.spawn_tree(pos,moretrees.fir_model)
 end

locale/es.txt

@@ -0,0 +1,100 @@
+# Traducido por Carlos Barraza
+
+### crafts.lua ###
+Coconut Milk = Leche de Coco
+Raw Coconut = Coco crudo
+Acorn Muffin batter =  Masa de Mollete de Bellota
+Acorn Muffin = Mollete de Bellota
+Roasted Spruce Cone Nuts = Cono de Picea Tostado
+Roasted Pine Cone Nuts = Cono de Pino Tostado
+Roasted Fir Cone Nuts = Cono de Abeto Tostado
+Roasted Cedar Cone Nuts = Coco de Alamo Tostado
+Date = Datilera
+Date & nut snack = Datilera y Nueces
+Date-nut cake batter = Pasta de torta de Datilera
+Date-nut cake = Pastel de Datilera
+Date-nut energy bar = Barra energetica de Datilera
+
+### date_palm.lua ###
+Dates = Datilera
+Date Stem = Tallo de Datilera
+Date Flowers = Flores de Datilera
+
+### node_defs.lua ###
+Beech Tree Trunk = Tronco de Arbol de Haya
+Apple Tree Trunk = Tronco de Arbol de Manzana
+Oak Tree Trunk = Tronco de Arbol de Roble
+Giant Sequoia Trunk = Tronco de Sequoia Gigante
+Birch Tree Trunk = Tronco de Arbol de Abedul
+Palm Tree Trunk = Tronco de Palmera
+Spruce Tree Trunk = Tronco de Arbol de Abeto
+Willow Tree Trunk = Tronco de Arbol de Sauce
+Rubber Tree Trunk = Tronco de Arbol de Arbol de Goma
+Jungle Tree = Tronco de Arbol de Arbol de la Selva
+Douglas Fir Trunk = Tronco de Arbol de Abeto de Douglas
+Cedar Tree Trunk = Tronco de Arbol de Cedro
+Date Palm Tree Trunk = Tronco de Palmera Datilera
+Acacia Tree Trunk = Tronco de Arbol de Acacia
+Poplar Tree Trunk = Tronco de Arbol de Alamo
+
+Beech Tree Planks = Madera de Arbol de Haya
+Apple Tree Planks = Madera de Arbol de Manzana
+Oak Tree Planks = Madera de Arbol de Roble
+Giant Sequoia Planks = Madera de Sequoia Gigante
+Birch Tree Planks = Madera de Arbol de Abedul
+Palm Tree Planks = Madera de Palmera
+Spruce Tree Planks = Madera de Arbol de Abeto
+Willow Tree Planks = Madera de Arbol de Sauce
+Rubber Tree Planks = Madera de Arbol de Arbol de Goma
+Jungle Planks = Madera de Arbol de Arbol de la Selva
+Douglas Fir Planks = Madera de Arbol de Abeto de Douglas
+Cedar Tree Planks = Madera de Arbol de Cedro
+Date Palm Tree Planks = Madera de Palmera Datilera
+Acacia Tree Planks = Madera de Arbol de Acacia
+Poplar Tree Planks = Madera de Arbol de Alamo
+
+Beech Tree Sapling = Retoño de Arbol de Haya
+Apple Tree Sapling = Retoño de Arbol de Manzana
+Oak Tree Sapling = Retoño de Arbol de Roble
+Giant Sequoia Sapling = Retoño de Arbol de Sequoia Gigante
+Birch Tree Sapling = Retoño de Arbol de Abedul
+Palm Tree Sapling = Retoño de Palmera
+Spruce Tree Sapling = Retoño de Arbol de Abeto
+Willow Tree Sapling = Retoño de Arbol de Sauce
+Rubber Tree Sapling = Retoño de Arbol de Arbol de Goma
+Jungle Sapling = Retoño de Arbol de Arbol de la Selva
+Douglas Fir Sapling = Retoño de Arbol de Abeto de Douglas
+Cedar Tree Sapling = Retoño de Arbol de Cedro
+Date Palm Tree Tree Sapling = Retoño de Palmera Datilera
+Acacia Tree Sapling = Retoño de Arbol de Acacia
+Poplar Tree Sapling = Retoño de Arbol de Alamo
+
+Beech Tree Leaves = Hojas de Arbol de Haya
+Apple Tree Leaves = Hojas de Arbol de Manzana
+Oak Tree Leaves = Hojas de Arbol de Roble
+Giant Sequoia Leaves = Hojas de Sequoia Gigante
+Birch Tree Leaves = Hojas de Arbol de Abedul
+Palm Tree Leaves = Hojas de Palmera
+Spruce Tree Leaves = Hojas de Arbol de Abeto
+Willow Tree Leaves = Hojas de Arbol de Sauce
+Rubber Tree Leaves = Hojas de Arbol de Arbol de Goma
+Jungle Leaves = Hojas de Arbol de Arbol de la Selva
+Douglas Fir Leaves = Hojas de Arbol de Abeto de Douglas
+Cedar Tree Leaves = Hojas de Arbol de Cedro
+Date Palm Tree Tree Leaves = Hojas de Palmera Datilera
+Acacia Tree Leaves = Hojas de Arbol de Acacia
+Poplar Tree Leaves = Hojas de Arbol de Alamo
+
+Acorn = Bellota
+Coconut = Coco
+Spruce Cone = Coco de Picea
+Pine Cone = Coco de Pino
+Fir Cone = Coco de Abeto
+Cedar Cone = Coco de Alamo
+Jungle Sapling = Retoño de Arbol de la Selva
+Jungle Tree Leaves (Yellow) = Hojas de Arbol de la Selva (Amarilla)
+Jungle Tree Leaves (Red) = Hojas de Arbol de la Selva (Roja)
+Douglas Fir Leaves (Bright) = Hojas de Arbol de Abeto de Douglas (Brillante)
+Rubber Tree Trunk (Empty) = Tronco de Arbol de Goma (Vacio)
+
+[Moretrees] Loaded (2013-02-11) = [Masarboles] Cargado

locale/fr.txt

@@ -0,0 +1,74 @@
+# Traduction par Yoan31
+# 
+
+### crafts.lua ###
+Coconut Milk = Lait de Coco
+Raw Coconut = Noix de Coco Crue
+Acorn Muffin batter = Pate à Muffins au Gland
+Acorn Muffin = Muffins au Gland
+Roasted Spruce Cone Nuts = Noix de Cône de Sapin Roties
+Roasted Pine Cone Nuts = Noix de Pomme de pin Roties
+Roasted Fir Cone Nuts = Noix de Cône de Sapin Roties
+
+### node_defs.lua ###
+Beech Tree Trunk = Tronc d'Arbre de Hêtre
+Apple Tree Trunk = Tronc d'Arbre de Pommier
+Oak Tree Trunk = Tronc d'Arbre de chêne
+Giant Sequoia Trunk = Tronc d'Arbre de Séquoia Géant
+Birch Tree Trunk = Tronc d'Arbre de bouleau
+Palm Tree Trunk = Tronc d'Arbre de Palmier
+Spruce Tree Trunk = Tronc d'Arbre d'Epicéa
+Pine Tree Trunk = Tronc d'Arbre de Pin
+Willow Tree Trunk = Tronc d'Arbre de Saule
+Rubber Tree Trunk = Tronc d'Arbre a Caoutchouc
+Jungle Tree Trunk = Tronc d'Arbre de la Jungle
+Douglas Fir Trunk = Tronc de Sapin de Douglas
+Beech Tree Planks = Planches de Hêtre
+Apple Tree Planks = Planches de Pommier
+Oak Tree Planks = Planches de Chêne
+Giant Sequoia Planks = Planches de d'Arbre de Séquoia Géant
+Birch Tree Planks = Planches d'Arbre de bouleau
+Palm Tree Planks = Planches d'Arbre de Palmier
+Spruce Tree Planks = Planches d'Arbre d'Epicéa
+Pine Tree Planks = Planches d'Arbre de Pin
+Willow Tree Planks = Planches d'Arbre de Saule
+Rubber Tree Planks = Planches d'Arbre a Caoutchouc
+Jungle Tree Planks = Planches d'Arbre de la Jungle
+Douglas Fir Planks = Planches de Sapin de Douglas
+Beech Tree Sapling = Pousse d'Arbre de Hêtre
+Apple Tree Sapling = Pousse d'Arbre de Pommier
+Oak Tree Sapling = Pousse d'Arbre de chêne
+Giant Sequoia Sapling = Pousse d'Arbre de Séquoia Géant
+Birch Tree Sapling = Pousse d'Arbre de bouleau
+Palm Tree Sapling = Pousse d'Arbre de Palmier
+Spruce Tree Sapling = Pousse d'Arbre d'Epicéa
+Pine Tree Sapling = Pousse d'Arbre de Pin
+Willow Tree Sapling = Pousse d'Arbre de Saule
+Rubber Tree Sapling = Pousse d'Arbre a Caoutchouc
+Jungle Tree Sapling = Pousse d'Arbre de la Jungle
+Douglas Fir Sapling = Pousse de Sapin de Douglas
+Beech Tree Leaves = Feuilles d'Arbre de Hêtre
+Apple Tree Leaves = Feuilles d'Arbre de Pommier
+Oak Tree Leaves = Feuilles d'Arbre de chêne
+Giant Sequoia Leaves = Feuilles d'Arbre de Séquoia Géant
+Birch Tree Leaves = Feuilles d'Arbre de bouleau
+Palm Tree Leaves = Feuilles d'Arbre de Palmier
+Spruce Tree Leaves = Feuilles d'Arbre d'Epicéa
+Pine Tree Leaves = Feuilles d'Arbre de Pin
+Willow Tree Leaves = Feuilles d'Arbre de Saule
+Rubber Tree Leaves = Feuilles d'Arbre a Caoutchouc
+Jungle Tree Leaves = Feuilles d'Arbre de la Jungle
+Douglas Fir Leaves = Feuilles de Sapin de Douglas
+
+Acorn = Gland
+Coconut = Noix de Coco
+Spruce Cone = Cône de Sapin
+Pine Cone = Pomme de Pin
+Fir Cone = Pomme de Sapin
+Jungle Sapling = Pousse d'Arbre de la Jungle
+Jungle Tree Leaves (Yellow) = Feuille d'Arbre de la Jungle (Jaune)
+Jungle Tree Leaves (Red) =  Feuille d'Arbre de la Jungle (Rouge)
+Douglas Fir Leaves (Bright) = Feuille de Sapin de Douglas (Brillant)
+Rubber Tree Trunk (Empty) = Tronc d'Arbre en Caoutchouc (Vide)
+
+[Moretrees] Loaded (2013-02-11) = 

node_defs.lua

@@ -1,23 +1,23 @@
 local S = moretrees.intllib
 
 moretrees.avoidnodes = {}
-	
-moretrees.treelist = {
-	{"beech",		"Beech Tree"},
-	{"apple_tree",	"Apple Tree"},
-	{"oak",			"Oak Tree",			"acorn",		"Acorn",		{-0.2, -0.5, -0.2, 0.2, 0, 0.2},	0.8 },
-	{"sequoia",		"Giant Sequoia"},
-	{"birch",		"Birch Tree"},
-	{"palm",		"Palm Tree",		"palm_fruit_trunk_gen",		"Palm Tree",		{-0.2, -0.5, -0.2, 0.2, 0, 0.2},	1.0 },
-	{"date_palm",		"Date Palm Tree",	"date_palm_fruit_trunk",	"Date Palm Tree",		{0, 0, 0, 0, 0, 0},	0.0 },
-	{"spruce",		"Spruce Tree",		"spruce_cone",	"Spruce Cone",	{-0.2, -0.5, -0.2, 0.2, 0, 0.2},	0.8 },
-	{"cedar",		"Cedar Tree",		"cedar_cone",	"Cedar Cone",	{-0.2, -0.5, -0.2, 0.2, 0, 0.2}, 0.8 },
-	{"willow",		"Willow Tree"},
-	{"rubber_tree",	"Rubber Tree"},
-	{"fir",			"Douglas Fir",		"fir_cone",		"Fir Cone",		{-0.2, -0.5, -0.2, 0.2, 0, 0.2},	0.8 },
 
-	{"jungletree",	"Jungle Tree",		nil,			nil,			nil,								nil, "default_junglesapling.png"  },
-	{"acacia",		"Acacia Tree",		nil,			nil,			nil,								nil, "default_acacia_sapling.png" },
+moretrees.treelist = {
+	{"beech",			"Beech Tree"},
+	{"apple_tree",		"Apple Tree"},
+	{"oak",				"Oak Tree",			"acorn",					"Acorn",			{-0.2, -0.5, -0.2, 0.2, 0, 0.2},	0.8 },
+	{"sequoia",			"Giant Sequoia"},
+	{"birch",			"Birch Tree"},
+	{"palm",			"Palm Tree",		"palm_fruit_trunk_gen",		"Palm Tree",		{-0.2, -0.5, -0.2, 0.2, 0, 0.2},	1.0 },
+	{"date_palm",		"Date Palm Tree",	"date_palm_fruit_trunk",	"Date Palm Tree",	{0, 0, 0, 0, 0, 0},	0.0 },
+	{"spruce",			"Spruce Tree",		"spruce_cone",				"Spruce Cone",		{-0.2, -0.5, -0.2, 0.2, 0, 0.2},	0.8 },
+	{"cedar",			"Cedar Tree",		"cedar_cone",				"Cedar Cone",		{-0.2, -0.5, -0.2, 0.2, 0, 0.2},	0.8 },
+	{"poplar",			"Poplar Tree"},
+	{"poplar_small",	"Poplar Tree"},
+	{"willow",			"Willow Tree"},
+	{"rubber_tree",		"Rubber Tree"},
+	{"fir",				"Douglas Fir",		"fir_cone",					"Fir Cone",			{-0.2, -0.5, -0.2, 0.2, 0, 0.2},	0.8 },
+	{"jungletree",		"Jungle Tree",		nil,						nil,				nil,								nil, "default_junglesapling.png"  },
 }
 
 local dirs1 = { 21, 20, 23, 22, 21 }
@@ -27,9 +27,9 @@ local dirs3 = { 14, 11, 16, 5, 14 }
 local moretrees_new_leaves_drawtype = "allfaces_optional"
 local moretrees_plantlike_leaves_visual_scale = 1
 
-if moretrees.plantlike_leaves then 
+if moretrees.plantlike_leaves then
 	moretrees_new_leaves_drawtype = "plantlike"
-	moretrees_plantlike_leaves_visual_scale = 1.189
+	moretrees_plantlike_leaves_visual_scale = math.sqrt(2)
 end
 
 -- redefine default leaves to handle plantlike and/or leaf decay options
@@ -38,11 +38,7 @@ if moretrees.plantlike_leaves then
 	minetest.override_item("default:leaves", {
 		inventory_image = minetest.inventorycube("default_leaves.png"),
 		drawtype = "plantlike",
-		visual_scale = 1.189
-	})
-else
-	minetest.override_item("default:leaves", {
-		waving = 1
+		visual_scale = math.sqrt(2)
 	})
 end
 
@@ -52,11 +48,7 @@ if moretrees.plantlike_leaves then
 	minetest.override_item("default:jungleleaves", {
 		inventory_image = minetest.inventorycube("default_jungleleaves.png"),
 		drawtype = "plantlike",
-		visual_scale = 1.189
-	})
-else
-	minetest.override_item("default:jungleleaves", {
-		waving = 1
+		visual_scale = math.sqrt(2)
 	})
 end
 
@@ -70,8 +62,22 @@ for i in ipairs(moretrees.treelist) do
 
 	local saptex = moretrees.treelist[i][7]
 
-	if treename ~= "jungletree"  -- the default game provides jungle tree, acacia, and pine trunk/planks nodes.
-		and treename ~= "acacia"
+	-- player will get a sapling with 1/100 chance
+	-- player will get leaves only if he/she gets no saplings,
+	-- this is because max_items is 1
+
+	local droprarity = 100
+	local decay = moretrees.leafdecay_radius
+
+	if treename == "palm" then
+		droprarity = 20
+		decay = moretrees.palm_leafdecay_radius
+	elseif treename == "date_palm" then
+		decay = moretrees.palm_leafdecay_radius
+	end
+
+	if treename ~= "jungletree"  -- the default game provides jungle tree and pine trunk/planks nodes.
+		and treename ~= "poplar_small"
 		and treename ~= "pine" then
 
 		saptex = "moretrees_"..treename.."_sapling.png"
@@ -84,7 +90,7 @@ for i in ipairs(moretrees.treelist) do
 				"moretrees_"..treename.."_trunk.png"
 			},
 			paramtype2 = "facedir",
-			is_ground_content = true,
+			is_ground_content = false,
 			groups = {tree=1,snappy=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
 			sounds = default.node_sound_wood_defaults(),
 			on_place = minetest.rotate_node,
@@ -93,7 +99,7 @@ for i in ipairs(moretrees.treelist) do
 		minetest.register_node("moretrees:"..treename.."_planks", {
 			description = S(treedesc.." Planks"),
 			tiles = {"moretrees_"..treename.."_wood.png"},
-			is_ground_content = true,
+			is_ground_content = false,
 			groups = {snappy=1,choppy=2,oddly_breakable_by_hand=2,flammable=3,wood=1},
 			sounds = default.node_sound_wood_defaults(),
 		})
@@ -106,6 +112,7 @@ for i in ipairs(moretrees.treelist) do
 			paramtype = "light",
 			paramtype2 = "waving",
 			walkable = false,
+			is_ground_content = true,
 			selection_box = {
 				type = "fixed",
 				fixed = {-0.3, -0.5, -0.3, 0.3, 0.35, 0.3}
@@ -113,20 +120,6 @@ for i in ipairs(moretrees.treelist) do
 			groups = {snappy=2,dig_immediate=3,flammable=2,attached_node=1,sapling=1},
 			sounds = default.node_sound_defaults(),
 		})
-	
-		-- player will get a sapling with 1/100 chance
-		-- player will get leaves only if he/she gets no saplings,
-		-- this is because max_items is 1
-
-		local droprarity = 100
-		local decay = moretrees.leafdecay_radius
-
-		if treename == "palm" then
-			droprarity = 20
-			decay = moretrees.palm_leafdecay_radius
-		elseif treename == "date_palm" then
-			decay = moretrees.palm_leafdecay_radius
-		end
 
 		local moretrees_leaves_inventory_image = nil
 		local moretrees_new_leaves_waving = nil
@@ -145,7 +138,8 @@ for i in ipairs(moretrees.treelist) do
 			tiles = { "moretrees_"..treename.."_leaves.png" },
 			inventory_image = moretrees_leaves_inventory_image,
 			paramtype = "light",
-			groups = {snappy = 3, flammable = 2, leaves = 1, moretrees_leaves = 1, leafdecay = decay},
+			is_ground_content = false,
+			groups = {snappy = 3, flammable = 2, leaves = 1, moretrees_leaves = 1, leafdecay = 1},
 			sounds = default.node_sound_leaves_defaults(),
 
 			drop = {
@@ -165,7 +159,7 @@ for i in ipairs(moretrees.treelist) do
 				stairsplus:register_all(
 					"moretrees",
 					treename.."_trunk",
-					"moretrees:"..treename.."_trunk", 
+					"moretrees:"..treename.."_trunk",
 					{
 						groups = { snappy=1, choppy=2, oddly_breakable_by_hand=1, flammable=2, not_in_creative_inventory=1 },
 						tiles =	{
@@ -218,13 +212,14 @@ for i in ipairs(moretrees.treelist) do
 	end
 
 	minetest.register_node("moretrees:"..treename.."_sapling_ongen", {
-		description = S(treedesc.." Sapling"),
+		description = S(treedesc.." Sapling (on-generated)"),
 		drawtype = "plantlike",
 		tiles = {saptex},
 		inventory_image = saptex,
 		paramtype = "light",
 		paramtype2 = "waving",
 		walkable = false,
+		is_ground_content = true,
 		selection_box = {
 			type = "fixed",
 			fixed = {-0.3, -0.5, -0.3, 0.3, 0.35, 0.3}
@@ -234,8 +229,10 @@ for i in ipairs(moretrees.treelist) do
 		drop = "moretrees:"..treename.."_sapling"
 	})
 
+	local fruitname = nil
 	if fruit then
-		minetest.register_node("moretrees:"..fruit, {
+		fruitname = "moretrees:"..fruit
+		minetest.register_node(fruitname, {
 			description = S(fruitdesc),
 			drawtype = "plantlike",
 			tiles = { "moretrees_"..fruit..".png" },
@@ -244,16 +241,27 @@ for i in ipairs(moretrees.treelist) do
 			visual_scale = vscale,
 			paramtype = "light",
 			sunlight_propagates = true,
+			is_ground_content = false,
 			walkable = false,
 			selection_box = {
 				type = "fixed",
 					fixed = selbox
 				},
-			groups = {fleshy=3,dig_immediate=3,flammable=2, attached_node=1},
+			groups = {fleshy=3,dig_immediate=3,flammable=2, attached_node=1, leafdecay = 1, leafdecay_drop = 1},
 			sounds = default.node_sound_defaults(),
 		})
 	end
 
+	if treename ~= "jungletree"
+		and treename ~= "poplar_small"
+		and treename ~= "pine" then
+			default.register_leafdecay({
+				trunks = { "moretrees:"..treename.."_trunk" },
+				leaves = { "moretrees:"..treename.."_leaves", fruitname },
+				radius = decay,
+			})
+	end
+
 	minetest.register_abm({
 		nodenames = { "moretrees:"..treename.."_trunk_sideways" },
 		interval = 1,
@@ -273,6 +281,45 @@ for i in ipairs(moretrees.treelist) do
 	end
 end
 
+-- Add small poplar saplings
+
+local poplar_sapling = minetest.registered_nodes["moretrees:poplar_sapling"]
+local poplar_sapling_ongen = minetest.registered_nodes["moretrees:poplar_sapling_ongen"]
+local poplar_small_sapling = {}
+local poplar_small_sapling_ongen = {}
+for k,v in pairs(poplar_sapling) do
+	poplar_small_sapling[k] = v
+end
+for k,v in pairs(poplar_sapling_ongen) do
+	poplar_small_sapling_ongen[k] = v
+end
+poplar_small_sapling.tiles = {"moretrees_poplar_small_sapling.png"}
+poplar_small_sapling.inventory_image = "moretrees_poplar_small_sapling.png"
+poplar_small_sapling.is_ground_content = true
+poplar_small_sapling_ongen.tiles_ongen = {"moretrees_poplar_small_sapling.png"}
+poplar_small_sapling_ongen.inventory_image_ongen = "moretrees_poplar_small_sapling.png"
+poplar_small_sapling_ongen.drop = "moretrees:poplar_small_sapling"
+poplar_small_sapling_ongen.is_ground_content = true
+
+minetest.register_node("moretrees:poplar_small_sapling", poplar_small_sapling)
+minetest.register_node("moretrees:poplar_small_sapling_ongen", poplar_small_sapling_ongen)
+if moretrees.spawn_saplings then
+	table.insert(moretrees.avoidnodes, "moretrees:poplar_sapling")
+	table.insert(moretrees.avoidnodes, "moretrees:poplar_small_sapling_ongen")
+end
+
+local poplar_leaves_drop = minetest.registered_nodes["moretrees:poplar_leaves"].drop
+minetest.override_item("moretrees:poplar_leaves", {
+	drop = {
+		max_items = poplar_leaves_drop.maxitems,
+		items = {
+			{items = {"moretrees:poplar_sapling"}, rarity = 1.33 * poplar_leaves_drop.items[1].rarity },
+			{items = {"moretrees:poplar_small_sapling"}, rarity = 1.33 * poplar_leaves_drop.items[1].rarity },
+			{items = {"moretrees:poplar_leaves"} }
+		}
+	}
+})
+
 -- Extra nodes for jungle trees:
 
 local jungleleaves = {"yellow","red"}
@@ -296,7 +343,8 @@ for color = 1, #jungleleaves do
 		tiles = {"moretrees_jungletree_leaves_"..jungleleaves[color]..".png"},
 		inventory_image = moretrees_leaves_inventory_image,
 		paramtype = "light",
-		groups = {snappy = 3, flammable = 2, leaves = 1, moretrees_leaves = 1, leafdecay = moretrees.leafdecay_radius },
+		is_ground_content = false,
+		groups = {snappy = 3, flammable = 2, leaves = 1, moretrees_leaves = 1, leafdecay = 3 },
 		drop = {
 			max_items = 1,
 			items = {
@@ -308,6 +356,18 @@ for color = 1, #jungleleaves do
 	})
 end
 
+-- To get Moretrees to generate its own jungle trees among the default mapgen
+-- we need our own copy of that node, which moretrees will match against.
+
+local jungle_tree = table.copy(minetest.registered_nodes["default:jungletree"])
+minetest.register_node("moretrees:jungletree_trunk", jungle_tree)
+
+default.register_leafdecay({
+	trunks = { "default:jungletree", "moretrees:jungletree_trunk" },
+	leaves = { "default:jungleleaves", "moretrees:jungletree_leaves_yellow", "moretrees:jungletree_leaves_red" },
+	radius = moretrees.leafdecay_radius,
+})
+
 -- Extra needles for firs
 
 local moretrees_leaves_inventory_image = nil
@@ -324,7 +384,8 @@ minetest.register_node("moretrees:fir_leaves_bright", {
 	tiles = { "moretrees_fir_leaves_bright.png" },
 	inventory_image = moretrees_leaves_inventory_image,
 	paramtype = "light",
-	groups = {snappy = 3, flammable = 2, leaves = 1, moretrees_leaves = 1, leafdecay = moretrees.leafdecay_radius },
+	is_ground_content = false,
+	groups = {snappy = 3, flammable = 2, leaves = 1, moretrees_leaves = 1, leafdecay = 3 },
 	drop = {
 		max_items = 1,
 		items = {
@@ -335,6 +396,13 @@ minetest.register_node("moretrees:fir_leaves_bright", {
 	sounds = default.node_sound_leaves_defaults()
 })
 
+default.register_leafdecay({
+	trunks = { "moretrees:fir_trunk" },
+	leaves = { "moretrees:fir_leaves", "moretrees:fir_leaves_bright" },
+	radius = moretrees.leafdecay_radius,
+})
+
+
 if moretrees.enable_redefine_apple then
 	local appledef = moretrees.clone_node("default:apple")
 	appledef.groups.attached_node = 1
@@ -348,10 +416,9 @@ table.insert(moretrees.avoidnodes, "moretrees:fir_trunk")
 table.insert(moretrees.avoidnodes, "default:tree")
 
 if moretrees.spawn_saplings then
-		table.insert(moretrees.avoidnodes, "snow:sapling_pine")
-		table.insert(moretrees.avoidnodes, "default:junglesapling")
-		table.insert(moretrees.avoidnodes, "default:pine_sapling")
-		table.insert(moretrees.avoidnodes, "default:acacia_sapling")
+	table.insert(moretrees.avoidnodes, "snow:sapling_pine")
+	table.insert(moretrees.avoidnodes, "default:junglesapling")
+	table.insert(moretrees.avoidnodes, "default:pine_sapling")
 end
 
 -- "empty" (tapped) rubber tree nodes
@@ -367,6 +434,7 @@ minetest.register_node("moretrees:rubber_tree_trunk_empty", {
 	groups = {tree=1,snappy=1,choppy=2,oddly_breakable_by_hand=1,flammable=2},
 	sounds = default.node_sound_wood_defaults(),
 	paramtype2 = "facedir",
+	is_ground_content = false,
 	on_place = minetest.rotate_node,
 })
 
@@ -381,12 +449,6 @@ minetest.register_abm({
 	end,
 })
 
--- To get Moretrees to generate its own jungle trees among the default mapgen
--- we need our own copy of that node, which moretrees will match against.
-
-local jungle_tree = moretrees.clone_node("default:jungletree")
-minetest.register_node("moretrees:jungletree_trunk", jungle_tree)
-
 -- For compatibility with old nodes, recently-changed nodes, and default nodes
 
 minetest.register_alias("technic:rubber_tree_full",				"moretrees:rubber_tree_trunk")
@@ -418,10 +480,6 @@ minetest.register_alias("moretrees:jungletree_trunk_sideways",	"moreblocks:horiz
 minetest.register_alias("moretrees:jungletree_planks",			"default:junglewood")
 minetest.register_alias("moretrees:jungletree_leaves_green",	"default:jungleleaves")
 
-minetest.register_alias("jungletree:leaves_green",				"default:jungleleaves")
-minetest.register_alias("jungletree:leaves_red",				"moretrees:jungletree_leaves_red")
-minetest.register_alias("jungletree:leaves_yellow",				"moretrees:jungletree_leaves_yellow")
-
 minetest.register_alias("moretrees:acacia_trunk",				"default:acacia_tree")
 minetest.register_alias("moretrees:acacia_planks",				"default:acacia_wood")
 minetest.register_alias("moretrees:acacia_sapling",				"default:acacia_sapling")
@@ -433,5 +491,6 @@ minetest.register_alias("moretrees:pine_sapling",				"moretrees:cedar_sapling")
 minetest.register_alias("moretrees:pine_leaves",				"moretrees:cedar_leaves")
 minetest.register_alias("moretrees:pine_cone",					"moretrees:cedar_cone")
 minetest.register_alias("moretrees:pine_nuts",					"moretrees:cedar_nuts")
+minetest.register_alias("moretrees:pine_sapling_ongen",			"moretrees:cedar_sapling_ongen")
 
 minetest.register_alias("moretrees:dates",					"moretrees:dates_f4")

saplings.lua

@@ -16,13 +16,15 @@ for i in ipairs(moretrees.treelist) do
 			grow_function = moretrees[tree_model],
 		})
 
-		biome_lib:grow_plants({
-			grow_delay = 2,
-			grow_chance = 30,
-			grow_plant = "moretrees:"..treename.."_sapling_ongen",
-			grow_nodes = moretrees[tree_biome].surface,
-			grow_function = moretrees[tree_model],
-		})
+		if moretrees.spawn_saplings then
+			biome_lib:grow_plants({
+				grow_delay = 2,
+				grow_chance = 30,
+				grow_plant = "moretrees:"..treename.."_sapling_ongen",
+				grow_nodes = moretrees[tree_biome].surface,
+				grow_function = moretrees[tree_model],
+			})
+		end
 
 	end
 end
@@ -35,13 +37,6 @@ biome_lib:grow_plants({
 	grow_function = "moretrees.grow_birch"
 })
 
-biome_lib:grow_plants({
-	grow_delay = 2,
-	grow_chance = 30,
-	grow_plant = "moretrees:birch_sapling_ongen",
-	grow_nodes = moretrees.birch_biome.surface,
-	grow_function = "moretrees.grow_birch"
-})
 
 biome_lib:grow_plants({
 	grow_delay = moretrees.sapling_interval,
@@ -51,14 +46,6 @@ biome_lib:grow_plants({
 	grow_function = "moretrees.grow_spruce"
 })
 
-biome_lib:grow_plants({
-	grow_delay = 2,
-	grow_chance = 30,
-	grow_plant = "moretrees:spruce_sapling_ongen",
-	grow_nodes = moretrees.spruce_biome.surface,
-	grow_function = "moretrees.grow_spruce"
-})
-
 biome_lib:grow_plants({
 	grow_delay = moretrees.sapling_interval,
 	grow_chance = moretrees.sapling_chance,
@@ -67,14 +54,6 @@ biome_lib:grow_plants({
 	grow_function = "moretrees.grow_fir"
 })
 
-biome_lib:grow_plants({
-	grow_delay = 2,
-	grow_chance = 30,
-	grow_plant = "moretrees:fir_sapling_ongen",
-	grow_nodes = moretrees.fir_biome.surface,
-	grow_function = "moretrees.grow_fir"
-})
-
 biome_lib:grow_plants({
 	grow_delay = moretrees.sapling_interval,
 	grow_chance = moretrees.sapling_chance,
@@ -83,11 +62,37 @@ biome_lib:grow_plants({
 	grow_function = "moretrees.grow_jungletree"
 })
 
-biome_lib:grow_plants({
-	grow_delay = 2,
-	grow_chance = 30,
-	grow_plant = "moretrees:jungletree_sapling_ongen",
-	grow_nodes = moretrees.jungletree_biome.surface,
-	grow_function = "moretrees.grow_jungletree"
-})
+if moretrees.spawn_saplings then
+	biome_lib:grow_plants({
+		grow_delay = 2,
+		grow_chance = 30,
+		grow_plant = "moretrees:jungletree_sapling_ongen",
+		grow_nodes = moretrees.jungletree_biome.surface,
+		grow_function = "moretrees.grow_jungletree"
+	})
 
+	biome_lib:grow_plants({
+		grow_delay = 2,
+		grow_chance = 30,
+		grow_plant = "moretrees:fir_sapling_ongen",
+		grow_nodes = moretrees.fir_biome.surface,
+		grow_function = "moretrees.grow_fir"
+	})
+
+
+	biome_lib:grow_plants({
+		grow_delay = 2,
+		grow_chance = 30,
+		grow_plant = "moretrees:spruce_sapling_ongen",
+		grow_nodes = moretrees.spruce_biome.surface,
+		grow_function = "moretrees.grow_spruce"
+	})
+
+	biome_lib:grow_plants({
+		grow_delay = 2,
+		grow_chance = 30,
+		grow_plant = "moretrees:birch_sapling_ongen",
+		grow_nodes = moretrees.birch_biome.surface,
+		grow_function = "moretrees.grow_birch"
+	})
+end

screenshot.lua

@@ -0,0 +1,168 @@
+-- Usage:
+-- - Create a new world
+-- - Set world mapgen: v6
+-- - Set world seed: 2625051331357512570
+-- - Enable the moretrees mod
+-- - Edit the moretrees source
+--   - Disable all trees in default_settings.lua
+--   - Recommended: make saplings grow fast in default_settings.lua:
+--     sapling_interval = 5
+--     sapling_chance = 1
+--   - Apply the patch below to moretrees
+--     (so that jungle trees are always large, and differently-colored):
+--     use 'git apply --ignore-space-change'
+--   - Make sure this file (you are reading) will be loaded when minetest starts !
+--     (e.g. add 'dofile(modpath.."/screenshot.lua")' to init.lua)
+-- - Start minetest
+-- - Goto 700,y,-280 (approximately)
+-- - Make sure the world is loaded between x = 650 .. 780 and z = -350 .. -180
+-- - Give the chat command '/make-scene'
+-- - Wait & walk/fly around until all trees have grown
+-- - goto the platform at 780, 30, -277
+-- - Set the viewing range to 300, with fog enabled
+-- - Take a screenshot.
+
+-- Patch to apply to moretrees
+--[[
+diff --git a/init.lua b/init.lua
+index 8189ffd..afd4644 100644
+--- a/init.lua
++++ b/init.lua
+@@ -225,9 +225,12 @@ moretrees.ct_rules_b1 = "[-FBf][+FBf]"
+ moretrees.ct_rules_a2 = "FF[FF][&&-FBF][&&+FBF][&&---FBF][&&+++FBF]F/A"
+ moretrees.ct_rules_b2 = "[-fB][+fB]"
+ 
++local jleaves = 1
+ function moretrees.grow_jungletree(pos)
+        local r1 = math.random(2)
+        local r2 = math.random(3)
++       r1 = jleaves
++       jleaves = jleaves % 2 + 1
+        if r1 == 1 then
+                moretrees.jungletree_model.leaves2 = "moretrees:jungletree_leaves_red"
+        else 
+@@ -235,6 +238,7 @@ function moretrees.grow_jungletree(pos)
+        end
+        moretrees.jungletree_model.leaves2_chance = math.random(25, 75)
+ 
++       r2=3
+        if r2 == 1 then
+                moretrees.jungletree_model.trunk_type = "single"
+                moretrees.jungletree_model.iterations = 2
+]]
+
+
+minetest.register_chatcommand("make-scene", {
+	func = function()
+		minetest.place_node({x=780, y=30, z=-277}, {name="default:obsidian"})
+		minetest.place_node({x=780, y=30, z=-278}, {name="default:obsidian"})
+		minetest.place_node({x=781, y=30, z=-277}, {name="default:obsidian"})
+		minetest.place_node({x=781, y=30, z=-278}, {name="default:obsidian"})
+		minetest.place_node({x=781, y=30, z=-276}, {name="default:obsidian"})
+		minetest.place_node({x=780, y=30, z=-276}, {name="default:obsidian"})
+
+		for z = -360, -300 do
+			dy=2
+			for x = 630 + (-z - 360)/3, 660 + (-z - 300)/3 do
+				for y = 5, 22 do
+					minetest.place_node({x=x, y=y, z=z}, {name="default:desert_stone"})
+				end
+				for y = 23, 25 + dy do
+					minetest.place_node({x=x, y=y, z=z}, {name="default:desert_sand"})
+				end
+				dy = 0
+			end
+		end
+
+		minetest.place_node({x=717, y=2, z=-298}, {name = "moretrees:palm_sapling"})
+		minetest.place_node({x=713, y=2, z=-302}, {name = "moretrees:palm_sapling"})
+		minetest.place_node({x=713, y=2, z=-307}, {name = "moretrees:palm_sapling"})
+		minetest.place_node({x=717, y=2, z=-318}, {name = "moretrees:palm_sapling"})
+		minetest.place_node({x=723, y=2, z=-320}, {name = "moretrees:palm_sapling"})
+
+		minetest.place_node({x=645, y=26, z=-314}, {name="moretrees:date_palm_sapling"})
+		minetest.place_node({x=653, y=26, z=-322}, {name="moretrees:date_palm_sapling"})
+		minetest.place_node({x=649, y=26, z=-334}, {name="moretrees:date_palm_sapling"})
+		minetest.place_node({x=662, y=26, z=-342}, {name="moretrees:date_palm_sapling"})
+
+		minetest.place_node({x=672, y=5, z=-305}, {name="moretrees:oak_sapling"})
+		minetest.place_node({x=690, y=6, z=-322}, {name="moretrees:oak_sapling"})
+		minetest.place_node({x=695, y=7, z=-335}, {name="moretrees:oak_sapling"})
+		minetest.place_node({x=699, y=4, z=-301}, {name="moretrees:oak_sapling"})
+
+		minetest.place_node({x=751, y=5, z=-254}, {name="moretrees:apple_tree_sapling"})
+		minetest.place_node({x=729, y=3, z=-275}, {name="moretrees:apple_tree_sapling"})
+		minetest.place_node({x=747, y=4, z=-270}, {name="moretrees:apple_tree_sapling"})
+
+		minetest.place_node({x=671, y=5, z=-283}, {name="default:junglesapling"})
+		minetest.place_node({x=680, y=4, z=-287}, {name="default:junglesapling"})
+		minetest.place_node({x=702, y=4, z=-288}, {name="default:junglesapling"})
+
+		minetest.place_node({x=646, y=12, z=-199}, {name="moretrees:spruce_sapling"})
+		minetest.place_node({x=644, y=14, z=-177}, {name="moretrees:spruce_sapling"})
+		minetest.place_node({x=678, y=9, z=-211}, {name="moretrees:spruce_sapling"})
+		minetest.place_node({x=663, y=10, z=-215}, {name="moretrees:spruce_sapling"})
+
+		minetest.place_node({x=637, y=3, z=-263}, {name="moretrees:sequoia_sapling"})
+		minetest.place_node({x=625, y=3, z=-250}, {name="moretrees:sequoia_sapling"})
+		minetest.place_node({x=616, y=3, z=-233}, {name="moretrees:sequoia_sapling"})
+		minetest.place_node({x=635, y=3, z=-276}, {name="moretrees:sequoia_sapling"})
+		minetest.place_node({x=681, y=11, z=-260}, {name="moretrees:sequoia_sapling"})
+		minetest.place_node({x=682, y=10, z=-247}, {name="moretrees:sequoia_sapling"})
+
+		minetest.place_node({x=737, y=7, z=-195}, {name="moretrees:cedar_sapling"})
+		minetest.place_node({x=720, y=8, z=-189}, {name="moretrees:cedar_sapling"})
+		minetest.place_node({x=704, y=7, z=-187}, {name="moretrees:cedar_sapling"})
+
+		minetest.place_node({x=731, y=2, z=-227}, {name="moretrees:poplar_sapling"})
+		minetest.place_node({x=721, y=2, z=-233}, {name="moretrees:poplar_sapling"})
+		minetest.place_node({x=712, y=1, z=-237}, {name="moretrees:poplar_sapling"})
+		minetest.place_node({x=743, y=3, z=-228}, {name="moretrees:poplar_small_sapling"})
+		minetest.place_node({x=750, y=3, z=-230}, {name="moretrees:poplar_small_sapling"})
+		minetest.place_node({x=731, y=5, z=-233}, {name="moretrees:poplar_small_sapling"})
+
+		minetest.place_node({x=702, y=2, z=-274}, {name="moretrees:birch_sapling"})
+		minetest.place_node({x=697, y=2, z=-271}, {name="moretrees:birch_sapling"})
+		minetest.place_node({x=696, y=2, z=-264}, {name="moretrees:birch_sapling"})
+		minetest.place_node({x=710, y=2, z=-265}, {name="moretrees:birch_sapling"})
+
+		minetest.place_node({x=707, y=8, z=-247}, {name="moretrees:fir_sapling"})
+		minetest.place_node({x=699, y=10, z=-254}, {name="moretrees:fir_sapling"})
+		minetest.place_node({x=729, y=5, z=-261}, {name="moretrees:fir_sapling"})
+		minetest.place_node({x=732, y=5, z=-252}, {name="moretrees:fir_sapling"})
+		minetest.place_node({x=741, y=4, z=-262}, {name="moretrees:fir_sapling"})
+
+		minetest.place_node({x=751, y=2, z=-286}, {name="moretrees:willow_sapling"})
+
+		minetest.place_node({x=760, y=5, z=-223}, {name="moretrees:rubber_tree_sapling"})
+		minetest.place_node({x=762, y=5, z=-230}, {name="moretrees:rubber_tree_sapling"})
+		minetest.place_node({x=766, y=5, z=-243}, {name="moretrees:rubber_tree_sapling"})
+		minetest.place_node({x=764, y=6, z=-252}, {name="moretrees:rubber_tree_sapling"})
+	end
+})
+
+--[[
+The following is a search/replace command suitable for vi (/vim) or sed, to convert minetest log
+messages to equivalent lua commands:
+
+s/.*\(\(moretrees\|default\)[^ ]*\) at (\([-0-9]\+\),\([-0-9]\+\),\([-0-9]\+\)).*/\t\tminetest.place_node({x=\3, y=\4, z=\5}, {name="\1"})/
+
+E.g. a minetest log line of the following kind:
+		2016-07-03 11:30:50: ACTION[Server]: singleplayer places node moretrees:rubber_tree_sapling at  (760,5,-223)
+Becomes:
+		minetest.place_node({x=760, y=5, z=-223}, {name="moretrees:rubber_tree_sapling"})
+(Except that the example log line above has an extra space added, so it won't be converted)
+
+vi/vim users: Add the minetest log lines to this file, then enter the following command, with
+<expression> replaced with the search/replace expression above.
+	:%<expression>
+
+sed users: Add the minetest log lines to this file, then execute the following command at the shell
+prompt with <expression> replaced by the search/replace expression above. Don't forget the
+single-quotes.
+	sed '<expression>' < screenshot.lua > screenshot-new.lua
+
+Windows users: You're probably out of luck. And the effort of doing such a thing is probably
+larger anyway than the effort of copying an existing line and typing things manually.
+]]
+

tree_biomes.txt

@@ -1,25 +1,24 @@
 
-		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 +15	water, 20	  10	dirt_with_grass		329		 5
-fir		 above +25	-20 to +10	  n/a		n/a	dirt_with_grass		359		 8
-firs on snow	 above +15	-20 to +10	  n/a		n/a	snow:snow		359		 8
-palm		- 1 to + 1	+15 to +32	water, 15	  10	sand			330		 5
-date palm	- 1 to +10	 above +39	water, 20h,20v	 100	desert_sand		339		10
-date palm	+11 to +30	 above +39	water, 1h,30v	   1	desert_sand		340		10
-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
-cedar		    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
-acacia		    n/a		    n/a		  n/a		n/a	dirt_with_grass,
-									desert_sand		n/a		15
-rubber		- 5 to + 5	 above +32	water, 15	  10	dirt_with_grass		338		20
+				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 +15		water, 20		 10		dirt_with_grass		329			 5
+fir				 above +25		-20 to +10		  n/a			n/a		dirt_with_grass		359			 8
+firs on snow	 above +15		-20 to +10		  n/a			n/a		snow:snow			359			 8
+palm			- 1 to + 1		+15 to +32		water, 15		 10		sand				330			 5
+date palm		- 1 to +10		 above +39		water, 20h,20v	100		desert_sand			339			10
+date palm		+11 to +30		 above +39		water, 1h,30v	  1		desert_sand			340			10
+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
+cedar			    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
+poplar			    n/a			-10 to +26		water, 15h,5v	  1		dirt_with_grass		341,342,343	10
 
-beech		    n/a		    n/a		  n/a		n/a	dirt_with_grass		2		10
+beech			    n/a			    n/a			  n/a			n/a		dirt_with_grass		2			10
 
 
 Notes:
@@ -28,10 +27,6 @@ Notes:
 Beech trees are meant to replace default trees, but are themselves disabled by default.  They grow in the same areas
 as the default ones do, and under the same conditions.
 
-Acacia trees depend on humidity as their primary control, and they don't use the fertile ground option. They grow near
-the edges of a desert biome, occasionally into the grass beyond, and anywhere else on desert sand or dirt with grass,
-where the humidity is low (but not bone dry).
-
 Fir trees appear in a snow biome only with older versions of SPlizard's Snow Biomes mod.  In more recent versions,
 these trees will not grow, due to an engine bug.
 

tree_models.lua

@@ -43,6 +43,37 @@ moretrees.oak_model={
 	fruit_chance=3,
 }
 
+moretrees.poplar_model={
+	axiom="TTTaaBCCCCCCCCCCCcccBBB[[f]&&G++f++Gf++Gf++Gf++G--]G[[f]&&G++f++Gf++Gf++Gf++G--]Gff",
+	rules_a="T",
+	rules_b="[[T]&&G++f++ff++ff++ff++f--]G",
+	rules_c="[[T]&&G++f++ff++ff++ff++f--G++[d]G[d]G++G[d]G[d]G[d]G++G[d]G[d]G[d]G++G[d]G[d]G[d]G++G[d]G]G",
+	rules_d="f",
+	trunk="air",
+	trunk="moretrees:poplar_trunk",
+	leaves="moretrees:poplar_leaves",
+	angle=45,
+	iterations=0,
+	random_level=0,
+	trunk_type="single",
+	thin_branches=false,
+}
+
+moretrees.poplar_small_model={
+	axiom="TT[T]BCCCCccBBff",
+	rules_a="T",
+	rules_b="[[f]&&G++f++Gf++Gf++Gf++G--]G",
+	rules_c="[[T]&&G++f++[d]Gf++[d]Gf++[d]Gf++[d]G--]G",
+	rules_d="f",
+	trunk="moretrees:poplar_trunk",
+	leaves="moretrees:poplar_leaves",
+	angle=45,
+	iterations=0,
+	random_level=0,
+	trunk_type="single",
+	thin_branches=false,
+}
+
 moretrees.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]]",
@@ -199,37 +230,6 @@ moretrees.willow_model={
 	thin_branches=true
 }
 
-moretrees.acacia_model={
-	axiom="FFFFFFccccA",
-	rules_a = "[B]//[B]//[B]//[B]",
-	rules_b = "&TTTT&TT^^G&&----GGGGGG++GGG++"	-- line up with the "canvas" edge
-			.."fffffffGG++G++"					-- first layer, drawn in a zig-zag raster pattern
-			.."Gffffffff--G--"
-			.."ffffffffG++G++"
-			.."fffffffff--G--"
-			.."fffffffff++G++"
-			.."fffffffff--G--"
-			.."ffffffffG++G++"
-			.."Gffffffff--G--"
-			.."fffffffGG"
-			.."^^G&&----GGGGGGG++GGGGGG++"		-- re-align to second layer canvas edge
-			.."ffffGGG++G++"					-- second layer
-			.."GGfffff--G--"
-			.."ffffffG++G++"
-			.."fffffff--G--"
-			.."ffffffG++G++"
-			.."GGfffff--G--"
-			.."ffffGGG",
-	rules_c = "/",
-	trunk="default:acacia_tree",
-	leaves="default:acacia_leaves",
-	angle=45,
-	iterations=3,
-	random_level=0,
-	trunk_type="single",
-	thin_branches=true,
-}
-
 moretrees.rubber_tree_model={
 	axiom="FFFFA",
 	rules_a="[&FFBFA]////[&BFFFA]////[&FBFFA]",