update mushroomone

mapgen.lua

@@ -266,7 +266,18 @@ add_schem({"default:dirt_with_snow"}, 0.001, {"alpine"}, 221, 310, path .. "yell
 add_schem({"ethereal:crystal_dirt"}, 0.01, {"frost"}, 130, 185, path .. "frosttrees.mts", ethereal.frost)
 
 -- giant mushroom
-add_schem({"ethereal:mushroom_dirt"}, 0.02, {"mushroom"}, 1, 100, path .. "mushroomone.mts", ethereal.mushroom)
+minetest.register_decoration({
+    deco_type = "schematic",
+    place_on = {"ethereal:mushroom_dirt"},
+    sidelen = 85,
+    fill_ratio = 0.012,
+    biomes = "mushroom",
+    rotation = "random",
+    y_min = 2,
+    y_max = 100,
+    schematic = path .. "mushroomone.mts",
+    flags = "place_center_y, place_center_x, place_center_z",
+})
 
 -- small lava crater
 --add_schem({"ethereal:fiery_dirt"}, 0.01, {"fiery"}, 30, 100, path .. "volcanom.mts", ethereal.fiery)