-- rename from bg_core to bg_terrain.
minetest.register_lbm({
	name = "bg_terrain:rename_core_mod",
	nodenames = {
		"core:stone",
		"core:cobblestone",
		"core:dirt",
		"core:grass",
		"bg_core:stone",
		"bg_core:cobblestone",
		"bg_core:dirt",
		"bg_core:grass",
	},
	run_at_every_load = true,
	action = function (pos, node)
		local prefix = ""
		if blockgame.starts_with(node.name, "core") then prefix = "core"
		elseif blockgame.starts_with(node.name, "bg_core") then prefix = "bg_core" end

		local name = string.sub(node.name, string.len(prefix) + 1)
		minetest.set_node(pos, {name = "bg_terrain" .. name})
	end,
})