merge upstream commit: Doors: Remove unnecessary node lookups

mods/farming/soil.lua

@@ -0,0 +1,64 @@
+-- normal soil
+minetest.register_node("farming:soil", {
+	description = "Soil",
+	tiles = {"default_dirt.png^farming_soil.png", "default_dirt.png"},
+	drop = "default:dirt",
+	groups = {crumbly = 3, not_in_creative_inventory = 1, soil = 2},
+	sounds = default.node_sound_dirt_defaults(),
+})
+
+-- wet soil
+minetest.register_node("farming:soil_wet", {
+	description = "Wet Soil",
+	tiles = {"default_dirt.png^farming_soil_wet.png", "default_dirt.png^farming_soil_wet_side.png"},
+	drop = "default:dirt",
+	groups = {crumbly = 3, not_in_creative_inventory = 1, soil = 3},
+	sounds = default.node_sound_dirt_defaults(),
+})
+
+-- sand is not soil, change existing sand-soil to use normal soil
+minetest.register_alias("farming:desert_sand_soil", "farming:soil")
+minetest.register_alias("farming:desert_sand_soil_wet", "farming:soil_wet")
+
+-- if water near soil then change to wet soil
+minetest.register_abm({
+	nodenames = {"farming:soil", "farming:soil_wet"},
+	interval = 15,
+	chance = 4,
+	catch_up = false,
+
+	action = function(pos, node)
+
+		pos.y = pos.y + 1
+		local nn = minetest.get_node_or_nil(pos)
+		pos.y = pos.y - 1
+
+		if nn then nn = nn.name else return end
+
+		-- what's on top of soil, if solid/not plant change soil to dirt
+		if minetest.registered_nodes[nn]
+		and minetest.registered_nodes[nn].walkable
+		and minetest.get_item_group(nn, "plant") == 0 then
+			minetest.set_node(pos, {name = "default:dirt"})
+			return
+		end
+
+		-- if map around soil not loaded then skip until loaded
+		if minetest.find_node_near(pos, 3, {"ignore"}) then
+			return
+		end
+
+		-- check if there is water nearby and change soil accordingly
+		if minetest.find_node_near(pos, 3, {"group:water"}) then
+			if node.name == "farming:soil" then
+				minetest.set_node(pos, {name = "farming:soil_wet"})
+			end
+
+		elseif node.name == "farming:soil_wet" then
+			minetest.set_node(pos, {name = "farming:soil"})
+
+		elseif node.name == "farming:soil" then
+			minetest.set_node(pos, {name = "default:dirt"})
+		end
+	end,
+})