From 9ec33f34f1fc76a70eb9e8aeddcace4042f00979 Mon Sep 17 00:00:00 2001
From: PilzAdam <pilzadam@minetest.net>
Date: Sat, 6 Dec 2014 11:08:41 +0100
Subject: [PATCH] Set param2 to 1 if player places leaves

---
 game_api.txt               | 4 ++++
 mods/default/functions.lua | 6 ++++++
 mods/default/nodes.lua     | 3 +++
 3 files changed, 13 insertions(+)

diff --git a/game_api.txt b/game_api.txt
index 9052e2ae..4424b20b 100644
--- a/game_api.txt
+++ b/game_api.txt
@@ -206,5 +206,9 @@ the node can be without decaying.
 If param2 of the node is ~= 0, the node will always be preserved. Thus, if
 the player places a node of that kind, you will want to set param2=1 or so.
 
+The function default.after_place_leaves can be set as after_place_node of a node
+to set param2 to 1 if the player places the node (should not be used for nodes
+that use param2 otherwise (e.g. facedir)).
+
 If the node is in the leafdecay_drop group then it will always be dropped as an
 item.
diff --git a/mods/default/functions.lua b/mods/default/functions.lua
index 630cdbdb..ecb7f612 100644
--- a/mods/default/functions.lua
+++ b/mods/default/functions.lua
@@ -244,6 +244,12 @@ minetest.register_globalstep(function(dtime)
 			math.floor(dtime * finds_per_second)
 end)
 
+default.after_place_leaves = function(pos, placer, itemstack, pointed_thing)
+	local node = minetest.get_node(pos)
+	node.param2 = 1
+	minetest.set_node(pos, node)
+end
+
 minetest.register_abm({
 	nodenames = {"group:leafdecay"},
 	neighbors = {"air", "group:liquid"},
diff --git a/mods/default/nodes.lua b/mods/default/nodes.lua
index 7e7977c6..a4fe2c37 100644
--- a/mods/default/nodes.lua
+++ b/mods/default/nodes.lua
@@ -277,6 +277,7 @@ minetest.register_node("default:jungleleaves", {
 		}
 	},
 	sounds = default.node_sound_leaves_defaults(),
+	after_place_node = default.after_place_leaves,
 })
 
 minetest.register_node("default:junglesapling", {
@@ -341,6 +342,7 @@ minetest.register_node("default:leaves", {
 		}
 	},
 	sounds = default.node_sound_leaves_defaults(),
+	after_place_node = default.after_place_leaves,
 })
 
 minetest.register_node("default:cactus", {
@@ -1505,6 +1507,7 @@ minetest.register_node("default:pine_needles",{
 		}
 	},
 	sounds = default.node_sound_leaves_defaults(),
+	after_place_node = default.after_place_leaves,
 })
 
 minetest.register_node("default:pine_sapling", {
-- 
2.25.1