added growth_check(pos, nodename) function

README.md

@@ -13,6 +13,7 @@ This mod works by adding your new plant to the {growing=1} group and numbering t
 
 ### Changelog:
 
+- 1.37 - Added custom 'growth_check(pos, nodename) function for crop nodes to use (check cocoa.lua for example)
 - 1.36 - Added Beetroot, Beetroot Soup (6x beetroot, 1x bowl), fix register_plant() issue, add new recipes
 - 1.35 - Deprecated bronze/mese/diamond hoe's, added hoe bomb and deprecated hoe's as lucky block prizes
 - 1.34 - Added scarecrow Base (5x sticks in a cross shape)

api.txt

@@ -39,3 +39,16 @@ The farming API allows you to easily register plants and hoes.
 	}
 
 Note: Any crops registered with the above function will use the new growing routines, also if crops are manually added with the {growing=1} group they will also grow.
+
+
+### Crop functions
+
+If a mod registers nodes to be used as crops using the {growing=1} group then an additional function can be used for custom growth checks instead of the standard 'are we above wet soil'.
+
+growth_check = function(pos, node_name)
+	-- check surrounding for jungle tree
+	if minetest.find_node_near(pos, 1, {"default:jungletree"}) then
+		return false -- place next growth stage
+	end
+	return true -- condition not met, skip next growth stage until next check
+end,

crops/cocoa.lua

@@ -124,7 +124,13 @@ local crop_def = {
 		snappy = 3, flammable = 2, plant = 1, growing = 1,
 		not_in_creative_inventory=1, leafdecay = 1, leafdecay_drop = 1
 	},
-	sounds = default.node_sound_leaves_defaults()
+	sounds = default.node_sound_leaves_defaults(),
+	growth_check = function(pos, node_name)
+		if minetest.find_node_near(pos, 1, {"default:jungletree"}) then
+			return false
+		end
+		return true
+	end,
 }
 
 -- stage 1
@@ -146,6 +152,7 @@ minetest.register_node("farming:cocoa_3", table.copy(crop_def))
 -- stage 4 (final)
 crop_def.tiles = {"farming_cocoa_4.png"}
 crop_def.groups.growing = 0
+crop_def.growth_check = nil
 crop_def.drop = {
 	items = {
 		{items = {'farming:cocoa_beans 2'}, rarity = 1},

init.lua

@@ -7,7 +7,7 @@
 
 farming = {}
 farming.mod = "redo"
-farming.version = "20180609"
+farming.version = "20180617"
 farming.path = minetest.get_modpath("farming")
 farming.select = {
 	type = "fixed",
@@ -301,11 +301,16 @@ function farming.plant_growth_timer(pos, elapsed, node_name)
 		return false
 	end
 
-	if stages.plant_name == "farming:cocoa" then
+	-- custom growth check
+	local chk = minetest.registered_nodes[node_name].growth_check
 
-		if not minetest.find_node_near(pos, 1, {"default:jungletree"}) then
+	if chk then
+
+		if chk(pos, node_name) then
 			return true
 		end
+
+	-- otherwise check for wet soil beneath crop
 	else
 		local under = minetest.get_node({ x = pos.x, y = pos.y - 1, z = pos.z })