only remove default biomes before registering ethereal one's

biomes.lua

@@ -1,9 +1,4 @@
 
--- clear default mapgen biomes, decorations but keep ores
-minetest.clear_registered_biomes()
-minetest.clear_registered_decorations()
---minetest.clear_registered_ores()
-
 local S = ethereal.intllib
 
 

biomes_init.lua

@@ -0,0 +1,91 @@
+
+--[[
+
+	Apologies for any breakages to current biomes or mods, the following code was
+	forced by wsor4035 so that Ethereal would be approved for contentdb inclusion
+
+]]--
+
+
+local old_biomes = {}
+local old_decor = {}
+
+
+-- backup registered biome data
+for key, def in pairs(minetest.registered_biomes) do
+	old_biomes[key] = def
+end
+
+for key, def in pairs(minetest.registered_decorations) do
+	old_decor[key] = def
+end
+
+
+-- clear current biome data
+minetest.clear_registered_biomes()
+minetest.clear_registered_decorations()
+-- minetest.clear_registered_ores()
+
+
+-- create list of default biomes to remove
+local def_biomes = {
+	"rainforest_swamp", "grassland_dunes", "cold_desert", "taiga", "icesheet_ocean",
+	"snowy_grassland_under", "desert", "deciduous_forest", "taiga_ocean", "desert_ocean",
+	"tundra_ocean", "snowy_grassland_ocean", "sandstone_desert", "tundra_under",
+	"coniferous_forest_ocean", "tundra", "sandstone_desert_under", "grassland",
+	"rainforest", "grassland_ocean", "tundra_beach", "rainforest_under", "savanna_under",
+	"icesheet", "savanna_ocean", "tundra_highland", "savanna", "cold_desert_under",
+	"cold_desert_ocean", "desert_under", "taiga_under", "savanna_shore",
+	"sandstone_desert_ocean", "snowy_grassland", "coniferous_forest_under",
+	"deciduous_forest_ocean", "grassland_under", "icesheet_under", "rainforest_ocean",
+	"deciduous_forest_shore", "deciduous_forest_under", "coniferous_forest_dunes",
+	"coniferous_forest"
+}
+
+
+-- only re-register biomes that aren't on the list
+for key, def in pairs(old_biomes) do
+
+	local can_add = true
+
+	for num, bio in pairs(def_biomes) do
+
+		if key == bio then
+			can_add = false
+		end
+	end
+
+	if can_add == true then
+		minetest.register_biome(def)
+	end
+end
+
+
+-- only re-register decorations that don't appear in any of the above biomes
+for key, def in pairs(old_decor) do
+
+	local can_add = true
+
+	if type(def.biomes) == "table" then
+
+		for num, bio in pairs(def.biomes) do
+
+			can_add = true
+
+			for n, b in pairs(def_biomes) do
+
+				if bio == b then
+					can_add = false
+				end
+			end
+		end
+	else
+		if def.biomes == key then
+			can_add = false
+		end
+	end
+
+	if can_add == true then
+		minetest.register_decoration(def)
+	end
+end

init.lua

@@ -7,7 +7,7 @@
 ]]
 
 
-ethereal = {version = "20220405"}
+ethereal = {version = "20220424"}
 
 
 local function setting(stype, name, default)
@@ -120,6 +120,7 @@ dofile(path .. "/fishing.lua")
 dofile(path .. "/extra.lua")
 dofile(path .. "/sealife.lua")
 dofile(path .. "/fences.lua")
+dofile(path .. "/biomes_init.lua")
 dofile(path .. "/biomes.lua")
 dofile(path .. "/ores.lua")
 dofile(path .. "/schems.lua")