From 1cf9e3701d51e6e61bb6bf8d06b2cc260f3eef6c Mon Sep 17 00:00:00 2001
From: Wuzzy <almikes@aol.com>
Date: Wed, 8 Mar 2017 01:54:04 +0100
Subject: [PATCH] Simplify sapling growth code

---
 mods/ITEMS/mcl_core/functions.lua | 43 +++++++++++--------------------
 1 file changed, 15 insertions(+), 28 deletions(-)

diff --git a/mods/ITEMS/mcl_core/functions.lua b/mods/ITEMS/mcl_core/functions.lua
index 802f7a137..52c90e5e2 100644
--- a/mods/ITEMS/mcl_core/functions.lua
+++ b/mods/ITEMS/mcl_core/functions.lua
@@ -415,17 +415,12 @@ minetest.register_abm({
 
 local treelight = 9
 
--- Oak tree
-minetest.register_abm({
-	nodenames = {"mcl_core:sapling"},
-	neighbors = {"group:soil_sapling"},
-	interval = 20,
-	chance = 1,
-	action = function(pos)
+local sapling_grow_action = function(trunknode, leafnode, tree_id, soil_needed)
+	return function(pos)
 		local light = minetest.get_node_light(pos)
 		local soilnode = minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z})
 		local soiltype = minetest.get_item_group(soilnode.name, "soil_sapling")
-		if soiltype >= 1 and light and light >= treelight then
+		if soiltype >= soil_needed and light and light >= treelight then
 			-- Increase and check growth stage
 			local meta = minetest.get_meta(pos)
 			local stage = meta:get_int("stage")
@@ -433,12 +428,21 @@ minetest.register_abm({
 			stage = stage + 1
 			if stage == 2 then
 				minetest.set_node(pos, {name="air"})
-				mcl_core.generate_tree(pos, "mcl_core:tree", "mcl_core:leaves", 1)
+				mcl_core.generate_tree(pos, trunknode, leafnode, tree_id)
 			else
 				meta:set_int("stage", stage)
 			end
 		end
-	end,
+	end
+end
+
+-- Oak tree
+minetest.register_abm({
+	nodenames = {"mcl_core:sapling"},
+	neighbors = {"group:soil_sapling"},
+	interval = 20,
+	chance = 1,
+	action = sapling_grow_action("mcl_core:tree", "mcl_core:leaves", 1, 1),
 })
 
 -- Jungle Tree
@@ -447,24 +451,7 @@ minetest.register_abm({
 	neighbors = {"group:soil_sapling"},
 	interval = 20,
 	chance = 1,
-	action = function(pos)
-		local light = minetest.get_node_light(pos)
-		local soilnode = minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z})
-		local soiltype = minetest.get_item_group(soilnode.name, "soil_sapling")
-		if soiltype == 2 and light and light >= treelight then
-			-- Increase and check growth stage
-			local meta = minetest.get_meta(pos)
-			local stage = meta:get_int("stage")
-			if stage == nil then stage = 0 end
-			stage = stage + 1
-			if stage == 2 then
-				minetest.set_node(pos, {name="air"})
-				mcl_core.generate_tree(pos, "mcl_core:jungletree", "mcl_core:jungleleaves", 2)
-			else
-				meta:set_int("stage", stage)
-			end
-		end
-	end,
+	action = sapling_grow_action("mcl_core:jungletree", "mcl_core:jungleleaves", 1, 2)
 })
 
 ---------------------