minetest.register_on_mods_loaded(function()
	for node_name, def in pairs(minetest.registered_nodes) do
		-- if minetest.get_item_group(node_name, 'group:leaves') then
		if def.groups and def.groups.leaves then
			-- local groups = table.copy(def.groups)
			-- groups.bouncy = 1
			-- groups.fall_damage_add_percent = -20
			minetest.override_item(node_name, {
				-- groups = groups,
				walkable = false,
				climbable = true,
				-- Climbing through leaves should slow players down
				move_resistance = 3,
				waving = 2,
				-- Make leaves fall when placed
				after_place_node = function(pos, oldnode, oldmeta, drops)
					minetest.spawn_falling_node(pos)
				end,
				-- Adapted from Tenplus1's regrow mod, licensed under MIT
				after_dig_node = function(pos, oldnode, oldmetadata, digger)
					-- if node has been placed by player then do not regrow
					if oldnode.param2 > 0 then
						return
					end
					-- replace leaf with regrowth node, set leaf name
					minetest.set_node(pos, {name = "regrow:hidden"})
					local meta = minetest.get_meta(pos)
					-- meta:set_string("fruit", nodename)
					meta:set_string("leaf", node_name)
				end,
				on_construct = function(pos)
					local time = math.random(60 * 20, 60 * 30)
					minetest.get_node_timer(pos):start(time)
				end,
				-- when timer reached check which leaf to remove
				on_timer = function(pos, elapsed)
					if math.random(100) == 1 then
						local pos2 = table.copy(pos)
						pos2.y =  pos2.y - 1
						local check_node = minetest.get_node(pos2)
						if check_node.name == 'air' then
							minetest.dig_node(pos)
							return false
						end
					end
					return true
				end
			})
		end
	end
end)

-- Regrow leaves, adapted from Tenplus1's regrow mod, licensed under MIT
minetest.register_node('real_leaves:hidden', {
	drawtype = "airlike",
	paramtype = "light",
	sunlight_propagates = true,
	walkable = false,
	pointable = false,
	diggable = false,
	buildable_to = true,
	drop = "",
	groups = {not_in_creative_inventory = 1},
	-- once placed start random timer between 20 and 30 minutes
	on_construct = function(pos)
		local time = math.random(60 * 20, 60 * 30)
		minetest.get_node_timer(pos):start(time)
	end,
	-- when timer reached check which leaf to place if tree still exists
	on_timer = function(pos, elapsed)
		local meta = minetest.get_meta(pos)
		if not meta then
			return
		end
		-- local fruit = meta:get_string("fruit") or ""
		local leaf = meta:get_string("leaf") or ""
		if leaf == "" or not minetest.find_node_near(pos, 1, leaf) then
			leaf = "air"
		end
		minetest.set_node(pos, {name = leaf})
	end
})

-- chance of limbs breaking while player is in leaves
minetest.register_globalstep(function(dtime)
	-- minetest.spawn_falling_node(pos)
	-- minetest.dig_node(pos)
	local players = minetest.get_connected_players()
	for player in players do
		if minetest.is_player(player) then
			local pos = player:get_pos()
			local pos2 = table.copy(pos)
			pos2.y = pos2.y + 1
			local nodes = minetest.find_nodes_in_area(pos, pos2, 'group:leaves', true)
			for node_name, node_poss in pairs(nodes) do
				for node_pos in node_poss do
					if math.random(20) == 1 then
						minetest.dig_node(node_pos)
					end
				end
			end
		end
	end
end)

-- Basically strip leaves off branches
minetest.register_craft({
	type = 'shapeless',
	output = 'default:stick',
	recipe = 'group:leaves',
	-- replacements = 'leaves without stick?'
})