From 061f4e76dd1e42517c618d2e6bd8d0c88b0ed5c7 Mon Sep 17 00:00:00 2001
From: ssdaniel24 <107036969+ssdaniel24@users.noreply.github.com>
Date: Sun, 23 Jun 2024 19:03:36 +0300
Subject: [PATCH] Added can_grow function to plant definition (#3131)

---
 game_api.txt         |  2 ++
 mods/farming/api.lua | 10 +++++++---
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/game_api.txt b/game_api.txt
index fb769c8d..3dcb2578 100644
--- a/game_api.txt
+++ b/game_api.txt
@@ -382,6 +382,8 @@ The farming API allows you to easily register plants and hoes.
 		-- ^ Always provide a plant texture for each step, format: modname_plantname_i.png (i = stepnumber)
 		minlight = 13,                         -- Minimum light to grow
 		maxlight = default.LIGHT_MAX           -- Maximum light to grow
+		can_grow = function(pos)               -- Сalled every growth tick to check if the plant can grow, returns bool
+		                                       -- (optional, checks for wet soil by default)
 	}
 
 
diff --git a/mods/farming/api.lua b/mods/farming/api.lua
index 96f9f636..08ab0a0a 100644
--- a/mods/farming/api.lua
+++ b/mods/farming/api.lua
@@ -189,6 +189,12 @@ farming.place_seed = function(itemstack, placer, pointed_thing, plantname)
 	return itemstack
 end
 
+-- check if on wet soil
+farming.can_grow = function(pos)
+	local below = minetest.get_node(pos:offset(0, -1, 0))
+	return minetest.get_item_group(below.name, "soil") >= 3
+end
+
 farming.grow_plant = function(pos, elapsed)
 	local node = minetest.get_node(pos)
 	local name = node.name
@@ -224,9 +230,7 @@ farming.grow_plant = function(pos, elapsed)
 		return
 	end
 
-	-- check if on wet soil
-	local below = minetest.get_node({x = pos.x, y = pos.y - 1, z = pos.z})
-	if minetest.get_item_group(below.name, "soil") < 3 then
+	if not (def.can_grow or farming.can_grow)(pos) then
 		tick_again(pos)
 		return
 	end