minetest.register_alias("mapgen_stone", "minecraft:stone")
minetest.register_alias("mapgen_water_source", "air")
minetest.register_alias("mapgen_river_water_source", "air")


minetest.register_alias("1", "minecraft:stone")
minetest.register_alias("minecraft:1", "minecraft:stone")
minetest.register_node(":minecraft:stone", {
	order = 1,
	description = "Stone",
	tiles = { "stone.png" },
	groups = { dig_immediate=3, },
	is_ground_content = true,
})

minetest.register_alias("2", "minecraft:grass")
minetest.register_alias("minecraft:2", "minecraft:grass")
minetest.register_node(":minecraft:grass", {
	order = 2,
	description = "Grass",
	tiles = { "grass.png" },
	groups = { dig_immediate=3, },
	is_ground_content = true,
})