Add waving property for leaves and plants.

mods/default/nodes.lua

@@ -258,6 +258,7 @@ minetest.register_node("default:jungleleaves", {
 	visual_scale = 1.3,
 	tiles = {"default_jungleleaves.png"},
 	paramtype = "light",
+	waving = 1,
 	is_ground_content = false,
 	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1},
 	drop = {
@@ -320,6 +321,7 @@ minetest.register_node("default:leaves", {
 	visual_scale = 1.3,
 	tiles = {"default_leaves.png"},
 	paramtype = "light",
+	waving = 1,
 	is_ground_content = false,
 	groups = {snappy=3, leafdecay=3, flammable=2, leaves=1},
 	drop = {
@@ -1227,6 +1229,7 @@ minetest.register_node("default:dry_shrub", {
 	inventory_image = "default_dry_shrub.png",
 	wield_image = "default_dry_shrub.png",
 	paramtype = "light",
+	waving = 1,
 	walkable = false,
 	is_ground_content = true,
 	buildable_to = true,

mods/farming/init.lua

@@ -189,6 +189,7 @@ minetest.register_node(":default:grass_1", {
 	inventory_image = "default_grass_3.png",
 	wield_image = "default_grass_3.png",
 	paramtype = "light",
+	waving = 1,
 	walkable = false,
 	buildable_to = true,
 	drop = {
@@ -220,6 +221,7 @@ for i=2,5 do
 		inventory_image = "default_grass_"..i..".png",
 		wield_image = "default_grass_"..i..".png",
 		paramtype = "light",
+		waving = 1,
 		walkable = false,
 		buildable_to = true,
 		is_ground_content = true,
@@ -247,6 +249,7 @@ minetest.register_node(":default:junglegrass", {
 	inventory_image = "default_junglegrass.png",
 	wield_image = "default_junglegrass.png",
 	paramtype = "light",
+	waving = 1,
 	walkable = false,
 	buildable_to = true,
 	is_ground_content = true,
@@ -365,6 +368,7 @@ for i=1,8 do
 		drawtype = "plantlike",
 		tiles = {"farming_wheat_"..i..".png"},
 		paramtype = "light",
+		waving = 1,
 		walkable = false,
 		buildable_to = true,
 		is_ground_content = true,
@@ -450,6 +454,7 @@ for i=1,8 do
 		drawtype = "plantlike",
 		tiles = {"farming_cotton_"..i..".png"},
 		paramtype = "light",
+		waving = 1,
 		walkable = false,
 		buildable_to = true,
 		is_ground_content = true,