Fix ferns compatibility with minetest >= 0.4.16 (#78)

ferns/crafting.lua

@@ -6,12 +6,17 @@ local S = plantlife_i18n.gettext
 -- (by Mossmanikin)
 -- License (everything):	WTFPL
 -----------------------------------------------------------------------------------------------
+
+local fern1 = minetest.registered_items["default:fern_1"] or false
+fern1 = (fern1 and fern1.name) or "ferns:fern_01"
+
+
 minetest.register_craft({
 	type = "shapeless",
 	output = "ferns:fiddlehead 3",
 	recipe = {"ferns:fern_01"},
 	replacements = {
-		{"ferns:fern_01", "ferns:ferntuber"}
+		{fern1, "ferns:ferntuber"}
 	},
 })
 

ferns/fern.lua

@@ -19,6 +19,14 @@ assert(abstract_ferns.config.enable_lady_fern == true)
 local S = plantlife_i18n.gettext
 
 -- Maintain backward compatibilty
+-- minetest-0.5: Begin
+local default_ferns = minetest.registered_items["default:fern_1"] or false
+if default_ferns then
+	minetest.register_alias("ferns:fern_03", "default:fern_3")
+	minetest.register_alias("ferns:fern_02", "default:fern_2")
+	minetest.register_alias("ferns:fern_01", "default:fern_1")
+end
+-- minetest-0.5: End
 minetest.register_alias("archaeplantae:fern",		"ferns:fern_03")
 minetest.register_alias("archaeplantae:fern_mid",	"ferns:fern_02")
 minetest.register_alias("archaeplantae:fern_small",	"ferns:fern_01")
@@ -67,7 +75,13 @@ end
 -- Init
 -----------------------------------------------------------------------------------------------
 
+if default_ferns then
+	for i = 1, 3 do
+		nodenames[i] = "ferns:fern_"..string.format("%02d", i)
+	end
+else
 	create_nodes()
+end
 
 -----------------------------------------------------------------------------------------------
 -- Spawning
@@ -136,6 +150,7 @@ if abstract_ferns.config.lady_ferns_near_ores == true then -- this one causes a
 			"default:mossycobble",
 			"default:stone_with_coal",
 			"default:stone_with_iron",
+			"default:stone_with_tin", -- minetest >= 0.4.16
 			"moreores:mineral_tin",
 			"moreores:mineral_silver",
 			"sumpf:sumpf"
@@ -149,6 +164,7 @@ if abstract_ferns.config.lady_ferns_near_ores == true then -- this one causes a
 			--"default:stone_with_mese",
 			--"default:stone_with_gold",
 			--"default:stone_with_diamond",
+			"default:stone_with_tin", -- minetest >= 0.4.16
 			"moreores:mineral_tin",
 			"moreores:mineral_silver"
 			--"moreores:mineral_mithril"
@@ -174,6 +190,7 @@ if abstract_ferns.config.lady_ferns_in_groups == true then -- this one is meant
 			"default:mossycobble",
 			"default:stone_with_coal",
 			"default:stone_with_iron",
+			"default:stone_with_tin", -- minetest >= 0.4.16
 			"moreores:mineral_tin",
 			"moreores:mineral_silver",
 			"sumpf:sumpf"

ferns/gianttreefern.lua

@@ -297,6 +297,7 @@ if abstract_ferns.config.enable_giant_treeferns_in_jungle == true then
 	biome_lib:register_generate_plant({
 		surface = {
 			"default:dirt_with_grass",
+			"default:dirt_with_rainforest_litter", -- minetest >= 0.4.16
 			"default:sand",
 			"default:desert_sand"--,
 			--"dryplants:grass_short"
@@ -330,7 +331,7 @@ if abstract_ferns.config.enable_giant_treeferns_in_oases == true then
 		neighbors = {"default:desert_sand"},
 		ncount = 1,
 		min_elevation = 1,
-		near_nodes = {"default:water_source"},
+		near_nodes = {"default:water_source", "default:river_water_source"},
 		near_nodes_size = 2,
 		near_nodes_vertical = 1,
 		near_nodes_count = 1,

ferns/horsetail.lua

@@ -82,6 +82,7 @@ if abstract_ferns.config.enable_horsetails_spawning == true then
 		spawn_chance = 400,
 		spawn_surfaces = {
 			"default:dirt_with_grass",
+			"default:dirt_with_coniferous_litter", -- minetest >= 0.5
 			"default:desert_sand",
 			"default:sand",
 			"dryplants:grass_short",
@@ -91,7 +92,7 @@ if abstract_ferns.config.enable_horsetails_spawning == true then
 		},
 		seed_diff = 329,
 		min_elevation = 1, -- above sea level
-		near_nodes = {"default:water_source","default:gravel"},
+		near_nodes = {"default:water_source","default:river_water_source","default:gravel"},
 		near_nodes_size = 2,
 		near_nodes_vertical = 1,
 		near_nodes_count = 1,
@@ -107,6 +108,7 @@ if abstract_ferns.config.enable_horsetails_on_grass == true then
 	biome_lib:register_generate_plant({
 		surface = {
 			"default:dirt_with_grass",
+			"default:dirt_with_coniferous_litter", -- minetest >= 0.5
 			"sumpf:sumpf"
 		},
 		max_count = 35,

ferns/init.lua

@@ -1,6 +1,6 @@
 -----------------------------------------------------------------------------------------------
 local title		= "Ferns" -- former "Archae Plantae"
-local version	= "0.2.0"
+local version	= "0.2.1"
 local mname		= "ferns" -- former "archaeplantae"
 -----------------------------------------------------------------------------------------------
 -- (by Mossmanikin)

ferns/treefern.lua

@@ -183,6 +183,7 @@ if abstract_ferns.config.enable_treeferns_in_jungle == true then
 	biome_lib:register_generate_plant({
 		surface = {
 			"default:dirt_with_grass",
+			"default:dirt_with_rainforest_litter", -- minetest >= 0.4.16
 			"default:sand",
 			"default:desert_sand",
 		},
@@ -219,7 +220,7 @@ if abstract_ferns.config.enable_treeferns_in_oases == true then
 		neighbors = {"default:desert_sand"},
 		ncount = 1,
 		min_elevation = 1,
-		near_nodes = {"default:water_source"},
+		near_nodes = {"default:water_source","default:river_water_source"},
 		near_nodes_size = 2,
 		near_nodes_vertical = 1,
 		near_nodes_count = 1,