use async env support when generating cocoa pods (thx Niklp)

crops/cocoa.lua

@@ -210,46 +210,9 @@ farming.registered_plants["farming:cocoa_beans"] = {
 	steps = 4
 }
 
--- localize math.random for speed
-local random = math.random
-
--- add random cocoa pods to jungle tree's
-minetest.register_on_generated(function(minp, maxp)
-
-	if maxp.y < 0 then
-		return
-	end
-
-	local pos, dir
-	local cocoa = minetest.find_nodes_in_area(minp, maxp,
-			{"default:jungletree", "mcl_core:jungletree"})
-
-	for n = 1, #cocoa do
-
-		pos = cocoa[n]
-
-		if minetest.find_node_near(pos, 1,
-			{"default:jungleleaves", "moretrees:jungletree_leaves_green",
-			"mcl_core:jungleleaves"}) then
-
-			dir = random(80)
-
-			    if dir == 1 then pos.x = pos.x + 1
-			elseif dir == 2 then pos.x = pos.x - 1
-			elseif dir == 3 then pos.z = pos.z + 1
-			elseif dir == 4 then pos.z = pos.z -1
-			end
-
-			if dir < 5
-			and minetest.get_node(pos).name == "air"
-			and minetest.get_node_light(pos) > 12 then
-
---print ("Cocoa Pod added at " .. minetest.pos_to_string(pos))
-
-				minetest.swap_node(pos, {
-					name = "farming:cocoa_" .. tostring(random(4))
-				})
-			end
-		end
-	end
-end)
+-- register async mapgen script
+if minetest.register_mapgen_script then
+	minetest.register_mapgen_script(farming.path .. "/crops/cocoa_mapgen.lua")
+else
+	dofile(farming.path .. "/crops/cocoa_mapgen.lua")
+end

crops/cocoa_mapgen.lua

@@ -0,0 +1,55 @@
+-- Localize things for speed
+local random = math.random
+local jungletree_nodes = {"default:jungletree", "mcl_core:jungletree"}
+local jungletree_leaves = {
+	"default:jungleleaves", "moretrees:jungletree_leaves_green", "mcl_core:jungleleaves"}
+
+-- Add random cocoa pods to jungle tree's
+local function generate(vmanip, minp, maxp)
+
+	if maxp.y < 0 then
+		return
+	end
+
+	local min, max = vmanip:get_emerged_area()
+	local area = VoxelArea:new({MinEdge = min, MaxEdge = max})
+	local data = vmanip:get_light_data()
+	local cocoa = minetest.find_nodes_in_area(minp, maxp, jungletree_nodes)
+
+	for n = 1, #cocoa do
+
+		local pos = cocoa[n]
+
+		if minetest.find_node_near(pos, 1, jungletree_leaves) then
+
+			local dir = random(80)
+
+			if dir == 1 then pos.x = pos.x + 1
+			elseif dir == 2 then pos.x = pos.x - 1
+			elseif dir == 3 then pos.z = pos.z + 1
+			elseif dir == 4 then pos.z = pos.z -1
+			end
+
+			if dir < 5 and minetest.get_node(pos).name == "air" then
+
+				local index = area:index(pos.x, pos.y, pos.z)
+
+				if data[index] > 12 then -- light at pos > 12
+
+					minetest.set_node(pos, {name = "farming:cocoa_" .. random(4)})
+--print("Cocoa Pod added at " .. minetest.pos_to_string(pos))
+				end
+			end
+		end
+	end
+end
+
+if minetest.save_gen_notify then -- async env (5.9+)
+	minetest.register_on_generated(function(vmanip, minp, maxp, blockseed)
+		generate(vmanip, minp, maxp)
+	end)
+else -- main thread (5.8 and earlier)
+	minetest.register_on_generated(function(minp, maxp, blockseed)
+		generate(minetest.get_mapgen_object("voxelmanip"), minp, maxp)
+	end)
+end

init.lua

@@ -7,7 +7,7 @@
 
 farming = {
 	mod = "redo",
-	version = "20240312",
+	version = "20240609",
 	path = minetest.get_modpath("farming"),
 	select = {
 		type = "fixed",