import part of the original nature mod from nature_pack

blossoms/apple spawning portion only
does not include the iron trees or tree-growing code as those are obsolete

nature_classic/blossom.lua

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+-- Blossom
+
+local BLOSSOM_CHANCE = 15
+local APPLE_CHANCE = 10
+local BLOSSOM_DELAY = 3600
+
+local BLOSSOM_NODE = "nature:blossom"
+
+local function spawn_apple_under(pos)
+    local below = {
+		x = pos.x,
+		y = pos.y - 1,
+		z = pos.z,
+	}
+    if minetest.env:get_node(below).name == "air" then
+		minetest.env:add_node(below, { name = "default:apple" })
+    end
+end
+
+minetest.register_node(":"..BLOSSOM_NODE, {
+    description = "Blossom",
+    drawtype = "allfaces_optional",
+    tiles = { "default_leaves.png^nature_blossom.png" },
+    paramtype = "light",
+    groups = { snappy = 3, leafdecay = 3, flammable = 2 },
+    sounds = default.node_sound_leaves_defaults(),
+    drop = BLOSSOM_NODE,
+})
+
+minetest.register_craft({
+    type = "fuel",
+    recipe = BLOSSOM_NODE,
+    burntime = 2,
+})
+
+-- Blossoming
+minetest.register_abm({
+    nodenames = { "default:leaves" },
+    interval = BLOSSOM_DELAY,
+    chance = BLOSSOM_CHANCE,
+
+    action = function(pos, node, active_object_count, active_object_count_wider)
+		nature:grow_node(pos, BLOSSOM_NODE)
+    end
+})
+
+-- Removing blossom
+minetest.register_abm({
+    nodenames = { BLOSSOM_NODE },
+    interval = BLOSSOM_DELAY,
+    chance = BLOSSOM_CHANCE,
+
+    action = function(pos, node, active_object_count, active_object_count_wider)
+		nature:grow_node(pos, "default:leaves")
+    end
+})
+
+-- Spawning apples
+minetest.register_abm({
+    nodenames = { BLOSSOM_NODE },
+    interval = BLOSSOM_DELAY,
+    chance = APPLE_CHANCE,
+
+    action = function(pos, node, active_object_count, active_object_count_wider)
+		spawn_apple_under(pos)
+    end
+})

nature_classic/config.lua

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+-- Set on which distance from water can the tree still grow.
+-- Grows anywhere if set to -1.
+DISTANCE_FROM_WATER = -1
+
+-- Minimum light level needed to grow. Default is 8, which means daylight.
+MINIMUM_GROWTH_LIGHT = 8

nature_classic/depends.txt

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+default

nature_classic/global_function.lua

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+local NODE_YOUNG = "young"
+
+nature = {}
+
+local function set_young_node(pos)
+    local meta = minetest.env:get_meta(pos)
+
+    meta:set_string(NODE_YOUNG, "true")
+    minetest.after(5,
+	function(pos)
+	    local meta = minetest.env:get_meta(pos)
+	    meta:set_string(NODE_YOUNG, "false")
+	end,
+    pos)
+end
+
+local function is_not_young(pos)
+    local meta = minetest.env:get_meta(pos)
+
+    local young = meta:get_string(NODE_YOUNG)
+    return young ~= "true"
+end
+
+function nature:grow_node(pos, nodename)
+    if pos ~= nil then
+	local light_enough = minetest.env:get_node_light(pos, nil)
+		>= MINIMUM_GROWTH_LIGHT 
+
+	if is_not_young(pos) and light_enough then
+	    minetest.env:remove_node(pos)
+	    minetest.env:add_node(pos, { name = nodename })
+	    set_young_node(pos)
+
+	    minetest.log("info", nodename .. " has grown at " .. pos.x .. ","
+		.. pos.y .. "," .. pos.z)
+	end
+    end
+end
+
+function nature:is_near_water(pos)
+    return minetest.env:find_node_near(pos, DISTANCE_FROM_WATER,
+	    { "default:water_source" }) ~= nil or DISTANCE_FROM_WATER == -1
+end

nature_classic/init.lua

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+-- Nature Classic mod
+-- Originally by neko259
+
+-- Nature is slowly capturing the world!
+
+local current_mod_name = minetest.get_current_modname()
+
+dofile(minetest.get_modpath(current_mod_name) .. "/config.lua")
+dofile(minetest.get_modpath(current_mod_name) .. "/global_function.lua")
+dofile(minetest.get_modpath(current_mod_name) .. "/blossom.lua")
+
+minetest.log("info", "[Nature Classic] loaded!")