many worldgen mods and gonna try technic now

mods/plantlife_modpack/youngtrees/init.lua

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+-- support for i18n
+local S = minetest.get_translator("youngtrees")
+
+local youngtree_rarity = minetest.settings:get("youngtrees.youngtree_rarity") or 0.0005
+
+minetest.register_node("youngtrees:bamboo", {
+	description = S("Young Bamboo Tree"),
+	drawtype="nodebox",
+	tiles = {"bamboo.png"},
+	paramtype = "light",
+	walkable = false,
+	is_ground_content = false,
+	node_box = {
+	type = "fixed",
+	fixed = {
+		{-0.058251,-0.500000,-0.413681,0.066749,0.500000,-0.282500}, --NodeBox 1
+		{-0.058251,-0.500000,-0.103123,0.066749,0.500000,0.038672}, --NodeBox 2
+		{-0.058251,-0.500000,0.181227,0.066749,0.500000,0.342500}, --NodeBox 3
+		}
+	},
+	groups = {snappy=3,flammable=2},
+	sounds = default.node_sound_leaves_defaults(),
+	drop = 'trunks:twig_1'
+})
+
+
+minetest.register_alias("youngtrees:youngtree2_middle", "default:bush_stem")
+
+minetest.register_node("youngtrees:youngtree_top", {
+	description = S("Young Tree (top)"),
+	drawtype = "plantlike",
+	tiles = {"youngtree16xa.png"},
+	inventory_image = "youngtree16xa.png",
+	wield_image = "youngtree16xa.png",
+	paramtype = "light",
+	walkable = false,
+	is_ground_content = false,
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.3, -0.5, -0.3, 0.3, 0.5, 0.3}
+	},
+	groups = {snappy=3,flammable=2,attached_node=1},
+	sounds = default.node_sound_leaves_defaults(),
+	drop = 'trunks:twig_1'
+})
+
+minetest.register_node("youngtrees:youngtree_middle", {
+	description = S("Young Tree (middle)"),
+	drawtype = "plantlike",
+	tiles = {"youngtree16xb.png"},
+	inventory_image = "youngtree16xb.png",
+	wield_image = "youngtree16xb.png",
+	paramtype = "light",
+	walkable = false,
+	is_ground_content = false,
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.3, -0.5, -0.3, 0.3, 0.5, 0.3}
+	},
+	groups = {snappy=3,flammable=2,attached_node=1},
+	sounds = default.node_sound_leaves_defaults(),
+	drop = 'trunks:twig_1'
+})
+
+minetest.register_node("youngtrees:youngtree_bottom", {
+	description = S("Young Tree (bottom)"),
+	drawtype = "plantlike",
+	tiles = {"youngtree16xc.png"},
+	inventory_image = "youngtree16xc.png",
+	wield_image = "youngtree16xc.png",
+	paramtype = "light",
+	walkable = false,
+	is_ground_content = false,
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.3, -0.5, -0.3, 0.3, 0.5, 0.3}
+	},
+	on_timer = function(pos, elapsed)
+		local function validateNode(node)
+			if not minetest.registered_nodes[node.name] or minetest.registered_nodes[node.name].drawtype ~= "airlike" then
+				return false
+			end
+			return true
+		end
+
+		local onePos, twoPos = vector.new(pos.x, pos.y+1, pos.z), vector.new(pos.x, pos.y+2, pos.z)
+		local oneAbove, twoAbove = minetest.get_node_or_nil(onePos), minetest.get_node_or_nil(twoPos)
+        if not oneAbove or not twoAbove or not validateNode(oneAbove) or not validateNode(twoAbove) then
+			minetest.swap_node(pos, {name="air"})
+            return
+		end
+
+		if math.random() > 0.5 then
+			minetest.set_node(onePos, {name="youngtrees:youngtree_top"})
+		else
+			minetest.set_node(onePos, {name="youngtrees:youngtree_middle"})
+			minetest.set_node(twoPos, {name="youngtrees:youngtree_top"})
+		end
+	end,
+	groups = {snappy=3,flammable=2,attached_node=1},
+	sounds = default.node_sound_leaves_defaults(),
+	drop = 'trunks:twig_1'
+})
+
+minetest.register_decoration({
+	name = "youngtrees:youngtree",
+	decoration = {
+		"youngtrees:youngtree_bottom"
+	},
+	fill_ratio = youngtree_rarity,
+	y_min = 1,
+	y_max = 40,
+	param2 = 0,
+	param2_max = 3,
+	place_on = {
+		"default:dirt_with_grass",
+		"stoneage:grass_with_silex",
+		"sumpf:peat",
+		"sumpf:sumpf"
+	},
+	deco_type = "simple",
+	flags = "all_floors",
+})
+
+--[[
+	this is purposefully wrapped in a on mods loaded callback to that it gets the proper ids
+	if other mods clear the registered decorations
+]]
+local did
+minetest.register_on_mods_loaded(function()
+	did = minetest.get_decoration_id("youngtrees:youngtree")
+	minetest.set_gen_notify("decoration", {did})
+end)
+
+minetest.register_on_generated(function(minp, maxp, blockseed)
+    local g = minetest.get_mapgen_object("gennotify")
+    local locations = {}
+
+	local deco_locations = g["decoration#" .. did] or {}
+	for _, pos in pairs(deco_locations) do
+		locations[#locations+1] = pos
+	end
+
+    if #locations == 0 then return end
+    for _, pos in ipairs(locations) do
+        local timer = minetest.get_node_timer({x=pos.x, y=pos.y+1, z=pos.z})
+        timer:start(0)
+    end
+end)

mods/plantlife_modpack/youngtrees/locale/template.txt

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+# textdomain: youngtrees
+Young Bamboo Tree=
+Young Tree (top)=
+Young Tree (middle)=
+Young Tree (bottom)=

mods/plantlife_modpack/youngtrees/locale/youngtrees.de.tr

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+# textdomain: youngtrees
+Young Bamboo Tree=Junger Bambus
+Young Tree (top)=Strauch (Spitze)
+Young Tree (middle)=Strauch (Mitte)
+Young Tree (bottom)=Strauch (Ansatz)

mods/plantlife_modpack/youngtrees/locale/youngtrees.eo.tr

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+# textdomain: youngtrees
+Young Bamboo Tree=Juna Bambuarbo
+Young Tree (top)=Juna Arbo (supro)
+Young Tree (middle)=Juna Arbo (mezo)
+Young Tree (bottom)=Juna Arbo (malsupro)

mods/plantlife_modpack/youngtrees/locale/youngtrees.fr.tr

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+# textdomain: youngtrees
+Young Bamboo Tree=Bambou jeune
+Young Tree (top)=Arbuste (haut)
+Young Tree (middle)=Arbuste (milieu)
+Young Tree (bottom)=Arbuste (bas)

mods/plantlife_modpack/youngtrees/mod.conf

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+name = youngtrees
+depends =  default
+optional_depends = ebiomes

mods/plantlife_modpack/youngtrees/settingtypes.txt

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+# Youngtree rarity (higher number -> higher probability)
+youngtrees.youngtree_rarity (Youngtree rarity) float 0.0005 0.0001 1