Default / flowers: New biomes. Limit dirt blobs. Add corals, bushes

Biomes:
Add 'sandstone desert', 'cold desert', 'snowy grassland'.
Rename 'glacier' biome to 'icesheet' biome.
Rename non-swamp 'swamp' biomes to 'shore' biomes.
Remove 'sandstone grassland' biome.
Rename 'stone grassland' biome to 'grassland' biome.
Edit biome points for improved similarity to Whittaker classification.
Change 'tundra' to bare stone with snowblocks.
Make dirt 'swamp' / 'shore' less deep.

Ores:
Make dirt blob ore biome-specific, limit to dirt biomes.

Decorations:
Make mushroom noise spread match that of appletrees as originally intended,
to have mushrooms spawn in darker thicker forest areas.
Add coral reefs in warm oceans.
Add bushes and acacia bushes.
Jungletrees in deeper water for larger swamps.

Register flower mod decorations in singlenode mapgen for use by
minetest.generate_registered_decorations, as in default/mapgen.lua.

mods/default/mapgen.lua

@@ -43,6 +43,7 @@ minetest.register_alias("mapgen_stair_sandstonebrick", "stairs:stair_sandstonebr
 --
 
 function default.register_ores()
+	minetest.clear_registered_ores()
 	-- Blob ores
 	-- These first to avoid other ores in blobs
 
@@ -109,6 +110,8 @@ function default.register_ores()
 			octaves = 1,
 			persist = 0.0
 		},
+		biomes = {"taiga", "snowy_grassland", "grassland", "coniferous_forest",
+			"deciduous_forest", "savanna", "rainforest"}
 	})
 
 	-- Gravel
@@ -379,10 +382,10 @@ end
 function default.register_biomes()
 	minetest.clear_registered_biomes()
 
-	-- Permanent ice
+	-- Icesheet
 
 	minetest.register_biome({
-		name = "glacier",
+		name = "icesheet",
 		node_dust = "default:snowblock",
 		node_top = "default:snowblock",
 		depth_top = 1,
@@ -398,36 +401,36 @@ function default.register_biomes()
 		y_min = -8,
 		y_max = 31000,
 		heat_point = 0,
-		humidity_point = 50,
+		humidity_point = 73,
 	})
 
 	minetest.register_biome({
-		name = "glacier_ocean",
+		name = "icesheet_ocean",
 		node_dust = "default:snowblock",
 		node_top = "default:sand",
 		depth_top = 1,
 		node_filler = "default:sand",
 		depth_filler = 3,
 		--node_stone = "",
-		--node_water_top = "",
-		--depth_water_top = ,
+		node_water_top = "default:ice",
+		depth_water_top = 10,
 		--node_water = "",
 		--node_river_water = "",
 		y_min = -112,
 		y_max = -9,
 		heat_point = 0,
-		humidity_point = 50,
+		humidity_point = 73,
 	})
 
-	-- Cold
+	-- Tundra
 
 	minetest.register_biome({
 		name = "tundra",
-		--node_dust = "",
-		node_top = "default:dirt_with_snow",
-		depth_top = 1,
-		node_filler = "default:dirt",
-		depth_filler = 1,
+		node_dust = "default:snowblock",
+		--node_top = ,
+		--depth_top = ,
+		--node_filler = ,
+		--depth_filler = ,
 		--node_stone = "",
 		--node_water_top = "",
 		--depth_water_top = ,
@@ -437,8 +440,8 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = 2,
 		y_max = 31000,
-		heat_point = 15,
-		humidity_point = 35,
+		heat_point = 0,
+		humidity_point = 40,
 	})
 
 	minetest.register_biome({
@@ -457,8 +460,8 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = -3,
 		y_max = 1,
-		heat_point = 15,
-		humidity_point = 35,
+		heat_point = 0,
+		humidity_point = 40,
 	})
 
 	minetest.register_biome({
@@ -477,10 +480,11 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = -112,
 		y_max = -4,
-		heat_point = 15,
-		humidity_point = 35,
+		heat_point = 0,
+		humidity_point = 40,
 	})
 
+	-- Taiga
 
 	minetest.register_biome({
 		name = "taiga",
@@ -498,8 +502,8 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = 2,
 		y_max = 31000,
-		heat_point = 15,
-		humidity_point = 65,
+		heat_point = 25,
+		humidity_point = 70,
 	})
 
 	minetest.register_biome({
@@ -518,14 +522,56 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = -112,
 		y_max = 1,
-		heat_point = 15,
-		humidity_point = 65,
+		heat_point = 25,
+		humidity_point = 70,
+	})
+
+	-- Snowy grassland
+
+	minetest.register_biome({
+		name = "snowy_grassland",
+		node_dust = "default:snow",
+		node_top = "default:dirt_with_snow",
+		depth_top = 1,
+		node_filler = "default:dirt",
+		depth_filler = 1,
+		--node_stone = "",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		node_riverbed = "default:sand",
+		depth_riverbed = 2,
+		y_min = 5,
+		y_max = 31000,
+		heat_point = 20,
+		humidity_point = 35,
+	})
+
+	minetest.register_biome({
+		name = "snowy_grassland_ocean",
+		--node_dust = "",
+		node_top = "default:sand",
+		depth_top = 1,
+		node_filler = "default:sand",
+		depth_filler = 3,
+		--node_stone = "",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		node_riverbed = "default:sand",
+		depth_riverbed = 2,
+		y_min = -112,
+		y_max = 4,
+		heat_point = 20,
+		humidity_point = 35,
 	})
 
-	-- Temperate
+	-- Grassland
 
 	minetest.register_biome({
-		name = "stone_grassland",
+		name = "grassland",
 		--node_dust = "",
 		node_top = "default:dirt_with_grass",
 		depth_top = 1,
@@ -540,12 +586,12 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = 6,
 		y_max = 31000,
-		heat_point = 40,
+		heat_point = 50,
 		humidity_point = 35,
 	})
 
 	minetest.register_biome({
-		name = "stone_grassland_dunes",
+		name = "grassland_dunes",
 		--node_dust = "",
 		node_top = "default:sand",
 		depth_top = 1,
@@ -560,12 +606,12 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = 5,
 		y_max = 5,
-		heat_point = 40,
+		heat_point = 50,
 		humidity_point = 35,
 	})
 
 	minetest.register_biome({
-		name = "stone_grassland_ocean",
+		name = "grassland_ocean",
 		--node_dust = "",
 		node_top = "default:sand",
 		depth_top = 1,
@@ -580,10 +626,11 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = -112,
 		y_max = 4,
-		heat_point = 40,
+		heat_point = 50,
 		humidity_point = 35,
 	})
 
+	-- Coniferous forest
 
 	minetest.register_biome({
 		name = "coniferous_forest",
@@ -601,8 +648,8 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = 6,
 		y_max = 31000,
-		heat_point = 40,
-		humidity_point = 65,
+		heat_point = 45,
+		humidity_point = 70,
 	})
 
 	minetest.register_biome({
@@ -621,8 +668,8 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = 5,
 		y_max = 5,
-		heat_point = 40,
-		humidity_point = 65,
+		heat_point = 45,
+		humidity_point = 70,
 	})
 
 	minetest.register_biome({
@@ -641,59 +688,60 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = -112,
 		y_max = 4,
-		heat_point = 40,
-		humidity_point = 65,
+		heat_point = 45,
+		humidity_point = 70,
 	})
 
+	-- Deciduous forest
 
 	minetest.register_biome({
-		name = "sandstone_grassland",
+		name = "deciduous_forest",
 		--node_dust = "",
 		node_top = "default:dirt_with_grass",
 		depth_top = 1,
 		node_filler = "default:dirt",
-		depth_filler = 1,
-		node_stone = "default:sandstone",
+		depth_filler = 3,
+		--node_stone = "",
 		--node_water_top = "",
 		--depth_water_top = ,
 		--node_water = "",
 		--node_river_water = "",
 		node_riverbed = "default:sand",
 		depth_riverbed = 2,
-		y_min = 6,
+		y_min = 1,
 		y_max = 31000,
 		heat_point = 60,
-		humidity_point = 35,
+		humidity_point = 68,
 	})
 
 	minetest.register_biome({
-		name = "sandstone_grassland_dunes",
+		name = "deciduous_forest_shore",
 		--node_dust = "",
-		node_top = "default:sand",
+		node_top = "default:dirt",
 		depth_top = 1,
-		node_filler = "default:sand",
-		depth_filler = 2,
-		node_stone = "default:sandstone",
+		node_filler = "default:dirt",
+		depth_filler = 3,
+		--node_stone = "",
 		--node_water_top = "",
 		--depth_water_top = ,
 		--node_water = "",
 		--node_river_water = "",
 		node_riverbed = "default:sand",
 		depth_riverbed = 2,
-		y_min = 5,
-		y_max = 5,
+		y_min = -1,
+		y_max = 0,
 		heat_point = 60,
-		humidity_point = 35,
+		humidity_point = 68,
 	})
 
 	minetest.register_biome({
-		name = "sandstone_grassland_ocean",
+		name = "deciduous_forest_ocean",
 		--node_dust = "",
 		node_top = "default:sand",
 		depth_top = 1,
 		node_filler = "default:sand",
 		depth_filler = 3,
-		node_stone = "default:sandstone",
+		--node_stone = "",
 		--node_water_top = "",
 		--depth_water_top = ,
 		--node_water = "",
@@ -701,60 +749,83 @@ function default.register_biomes()
 		node_riverbed = "default:sand",
 		depth_riverbed = 2,
 		y_min = -112,
-		y_max = 4,
+		y_max = -2,
 		heat_point = 60,
-		humidity_point = 35,
+		humidity_point = 68,
 	})
 
+	-- Desert
 
 	minetest.register_biome({
-		name = "deciduous_forest",
+		name = "desert",
 		--node_dust = "",
-		node_top = "default:dirt_with_grass",
+		node_top = "default:desert_sand",
 		depth_top = 1,
-		node_filler = "default:dirt",
-		depth_filler = 3,
-		--node_stone = "",
+		node_filler = "default:desert_sand",
+		depth_filler = 1,
+		node_stone = "default:desert_stone",
 		--node_water_top = "",
 		--depth_water_top = ,
 		--node_water = "",
 		--node_river_water = "",
 		node_riverbed = "default:sand",
 		depth_riverbed = 2,
-		y_min = 1,
+		y_min = 5,
 		y_max = 31000,
-		heat_point = 60,
-		humidity_point = 65,
+		heat_point = 92,
+		humidity_point = 16,
 	})
 
 	minetest.register_biome({
-		name = "deciduous_forest_swamp",
+		name = "desert_ocean",
 		--node_dust = "",
-		node_top = "default:dirt",
+		node_top = "default:sand",
 		depth_top = 1,
-		node_filler = "default:dirt",
+		node_filler = "default:sand",
 		depth_filler = 3,
-		--node_stone = "",
+		node_stone = "default:desert_stone",
 		--node_water_top = "",
 		--depth_water_top = ,
 		--node_water = "",
 		--node_river_water = "",
 		node_riverbed = "default:sand",
 		depth_riverbed = 2,
-		y_min = -3,
-		y_max = 0,
+		y_min = -112,
+		y_max = 4,
+		heat_point = 92,
+		humidity_point = 16,
+	})
+
+	-- Sandstone desert
+
+	minetest.register_biome({
+		name = "sandstone_desert",
+		--node_dust = "",
+		node_top = "default:sand",
+		depth_top = 1,
+		node_filler = "default:sand",
+		depth_filler = 0,
+		node_stone = "default:sandstone",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		node_riverbed = "default:sand",
+		depth_riverbed = 2,
+		y_min = 5,
+		y_max = 31000,
 		heat_point = 60,
-		humidity_point = 65,
+		humidity_point = 0,
 	})
 
 	minetest.register_biome({
-		name = "deciduous_forest_ocean",
+		name = "sandstone_desert_ocean",
 		--node_dust = "",
 		node_top = "default:sand",
 		depth_top = 1,
 		node_filler = "default:sand",
 		depth_filler = 3,
-		--node_stone = "",
+		node_stone = "default:sandstone",
 		--node_water_top = "",
 		--depth_water_top = ,
 		--node_water = "",
@@ -762,21 +833,21 @@ function default.register_biomes()
 		node_riverbed = "default:sand",
 		depth_riverbed = 2,
 		y_min = -112,
-		y_max = -4,
+		y_max = 4,
 		heat_point = 60,
-		humidity_point = 65,
+		humidity_point = 0,
 	})
 
-	-- Hot
+	-- Cold desert
 
 	minetest.register_biome({
-		name = "desert",
+		name = "cold_desert",
 		--node_dust = "",
-		node_top = "default:desert_sand",
+		node_top = "default:silver_sand",
 		depth_top = 1,
-		node_filler = "default:desert_sand",
+		node_filler = "default:silver_sand",
 		depth_filler = 1,
-		node_stone = "default:desert_stone",
+		--node_stone = "",
 		--node_water_top = "",
 		--depth_water_top = ,
 		--node_water = "",
@@ -785,18 +856,18 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = 5,
 		y_max = 31000,
-		heat_point = 85,
-		humidity_point = 20,
+		heat_point = 40,
+		humidity_point = 0,
 	})
 
 	minetest.register_biome({
-		name = "desert_ocean",
+		name = "cold_desert_ocean",
 		--node_dust = "",
 		node_top = "default:sand",
 		depth_top = 1,
 		node_filler = "default:sand",
 		depth_filler = 3,
-		node_stone = "default:desert_stone",
+		--node_stone = "",
 		--node_water_top = "",
 		--depth_water_top = ,
 		--node_water = "",
@@ -805,10 +876,11 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = -112,
 		y_max = 4,
-		heat_point = 85,
-		humidity_point = 20,
+		heat_point = 40,
+		humidity_point = 0,
 	})
 
+	-- Savanna
 
 	minetest.register_biome({
 		name = "savanna",
@@ -826,12 +898,12 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = 1,
 		y_max = 31000,
-		heat_point = 85,
-		humidity_point = 50,
+		heat_point = 89,
+		humidity_point = 42,
 	})
 
 	minetest.register_biome({
-		name = "savanna_swamp",
+		name = "savanna_shore",
 		--node_dust = "",
 		node_top = "default:dirt",
 		depth_top = 1,
@@ -844,10 +916,10 @@ function default.register_biomes()
 		--node_river_water = "",
 		node_riverbed = "default:sand",
 		depth_riverbed = 2,
-		y_min = -3,
+		y_min = -1,
 		y_max = 0,
-		heat_point = 85,
-		humidity_point = 50,
+		heat_point = 89,
+		humidity_point = 42,
 	})
 
 	minetest.register_biome({
@@ -865,11 +937,12 @@ function default.register_biomes()
 		node_riverbed = "default:sand",
 		depth_riverbed = 2,
 		y_min = -112,
-		y_max = -4,
-		heat_point = 85,
-		humidity_point = 50,
+		y_max = -2,
+		heat_point = 89,
+		humidity_point = 42,
 	})
 
+	-- Rainforest
 
 	minetest.register_biome({
 		name = "rainforest",
@@ -887,8 +960,8 @@ function default.register_biomes()
 		depth_riverbed = 2,
 		y_min = 1,
 		y_max = 31000,
-		heat_point = 85,
-		humidity_point = 80,
+		heat_point = 86,
+		humidity_point = 65,
 	})
 
 	minetest.register_biome({
@@ -905,10 +978,10 @@ function default.register_biomes()
 		--node_river_water = "",
 		node_riverbed = "default:sand",
 		depth_riverbed = 2,
-		y_min = -3,
+		y_min = -1,
 		y_max = 0,
-		heat_point = 85,
-		humidity_point = 80,
+		heat_point = 86,
+		humidity_point = 65,
 	})
 
 	minetest.register_biome({
@@ -926,9 +999,9 @@ function default.register_biomes()
 		node_riverbed = "default:sand",
 		depth_riverbed = 2,
 		y_min = -112,
-		y_max = -4,
-		heat_point = 85,
-		humidity_point = 80,
+		y_max = -2,
+		heat_point = 86,
+		humidity_point = 65,
 	})
 
 	-- Underground
@@ -1047,7 +1120,8 @@ function default.register_mgv6_decorations()
 	})
 end
 
--- All mapgens except mgv6 and singlenode
+
+-- All mapgens except mgv6
 
 local function register_grass_decoration(offset, scale, length)
 	minetest.register_decoration({
@@ -1062,13 +1136,11 @@ local function register_grass_decoration(offset, scale, length)
 			octaves = 3,
 			persist = 0.6
 		},
-		biomes = {"stone_grassland", "sandstone_grassland",
-			"deciduous_forest", "coniferous_forest",
-			"stone_grassland_dunes", "sandstone_grassland_dunes",
-			"coniferous_forest_dunes"},
+		biomes = {"grassland", "grassland_dunes", "deciduous_forest",
+			"coniferous_forest", "coniferous_forest_dunes"},
 		y_min = 1,
 		y_max = 31000,
-		decoration = "default:grass_"..length,
+		decoration = "default:grass_" .. length,
 	})
 end
 
@@ -1088,10 +1160,11 @@ local function register_dry_grass_decoration(offset, scale, length)
 		biomes = {"savanna"},
 		y_min = 1,
 		y_max = 31000,
-		decoration = "default:dry_grass_"..length,
+		decoration = "default:dry_grass_" .. length,
 	})
 end
 
+
 function default.register_decorations()
 	minetest.clear_registered_decorations()
 
@@ -1112,7 +1185,7 @@ function default.register_decorations()
 		biomes = {"deciduous_forest"},
 		y_min = 1,
 		y_max = 31000,
-		schematic = minetest.get_modpath("default").."/schematics/apple_tree.mts",
+		schematic = minetest.get_modpath("default") .. "/schematics/apple_tree.mts",
 		flags = "place_center_x, place_center_z",
 	})
 
@@ -1157,9 +1230,9 @@ function default.register_decorations()
 		sidelen = 80,
 		fill_ratio = 0.1,
 		biomes = {"rainforest", "rainforest_swamp"},
-		y_min = 0,
+		y_min = -1,
 		y_max = 31000,
-		schematic = minetest.get_modpath("default").."/schematics/jungle_tree.mts",
+		schematic = minetest.get_modpath("default") .. "/schematics/jungle_tree.mts",
 		flags = "place_center_x, place_center_z",
 		rotation = "random",
 	})
@@ -1207,7 +1280,7 @@ function default.register_decorations()
 		biomes = {"taiga", "coniferous_forest"},
 		y_min = 2,
 		y_max = 31000,
-		schematic = minetest.get_modpath("default").."/schematics/pine_tree.mts",
+		schematic = minetest.get_modpath("default") .. "/schematics/pine_tree.mts",
 		flags = "place_center_x, place_center_z",
 	})
 
@@ -1261,7 +1334,7 @@ function default.register_decorations()
 		biomes = {"savanna"},
 		y_min = 1,
 		y_max = 31000,
-		schematic = minetest.get_modpath("default").."/schematics/acacia_tree.mts",
+		schematic = minetest.get_modpath("default") .. "/schematics/acacia_tree.mts",
 		flags = "place_center_x, place_center_z",
 		rotation = "random",
 	})
@@ -1313,7 +1386,7 @@ function default.register_decorations()
 		biomes = {"deciduous_forest"},
 		y_min = 1,
 		y_max = 31000,
-		schematic = minetest.get_modpath("default").."/schematics/aspen_tree.mts",
+		schematic = minetest.get_modpath("default") .. "/schematics/aspen_tree.mts",
 		flags = "place_center_x, place_center_z",
 	})
 
@@ -1349,6 +1422,7 @@ function default.register_decorations()
 		flags = "place_center_x",
 		rotation = "random",
 	})
+
 	-- Large cactus
 
 	minetest.register_decoration({
@@ -1366,7 +1440,7 @@ function default.register_decorations()
 		biomes = {"desert"},
 		y_min = 5,
 		y_max = 31000,
-		schematic = minetest.get_modpath("default").."/schematics/large_cactus.mts",
+		schematic = minetest.get_modpath("default") .. "/schematics/large_cactus.mts",
 		flags = "place_center_x",
 		rotation = "random",
 	})
@@ -1407,10 +1481,52 @@ function default.register_decorations()
 			octaves = 3,
 			persist = 0.7
 		},
-		biomes = {"savanna_swamp"},
+		biomes = {"savanna_shore"},
 		y_min = 0,
 		y_max = 0,
-		schematic = minetest.get_modpath("default").."/schematics/papyrus.mts",
+		schematic = minetest.get_modpath("default") .. "/schematics/papyrus.mts",
+	})
+
+	-- Bush
+
+	minetest.register_decoration({
+		deco_type = "schematic",
+		place_on = {"default:dirt_with_grass", "default:dirt_with_snow"},
+		sidelen = 16,
+		noise_params = {
+			offset = -0.004,
+			scale = 0.01,
+			spread = {x = 100, y = 100, z = 100},
+			seed = 137,
+			octaves = 3,
+			persist = 0.7,
+		},
+		biomes = {"snowy_grassland", "grassland", "deciduous_forest"},
+		y_min = 1,
+		y_max = 31000,
+		schematic = minetest.get_modpath("default") .. "/schematics/bush.mts",
+		flags = "place_center_x, place_center_z",
+	})
+
+	-- Acacia bush
+
+	minetest.register_decoration({
+		deco_type = "schematic",
+		place_on = {"default:dirt_with_dry_grass"},
+		sidelen = 16,
+		noise_params = {
+			offset = -0.004,
+			scale = 0.01,
+			spread = {x = 100, y = 100, z = 100},
+			seed = 90155,
+			octaves = 3,
+			persist = 0.7,
+		},
+		biomes = {"savanna"},
+		y_min = 1,
+		y_max = 31000,
+		schematic = minetest.get_modpath("default") .. "/schematics/acacia_bush.mts",
+		flags = "place_center_x, place_center_z",
 	})
 
 	-- Grasses
@@ -1446,7 +1562,8 @@ function default.register_decorations()
 
 	minetest.register_decoration({
 		deco_type = "simple",
-		place_on = {"default:desert_sand", "default:dirt_with_snow"},
+		place_on = {"default:desert_sand",
+			"default:sand", "default:silver_sand"},
 		sidelen = 16,
 		noise_params = {
 			offset = 0,
@@ -1456,11 +1573,36 @@ function default.register_decorations()
 			octaves = 3,
 			persist = 0.6
 		},
-		biomes = {"desert", "tundra"},
+		biomes = {"desert", "sandstone_desert", "cold_desert"},
 		y_min = 2,
 		y_max = 31000,
 		decoration = "default:dry_shrub",
 	})
+
+	-- Coral reef
+
+	minetest.register_decoration({
+		deco_type = "schematic",
+		place_on = {"default:sand"},
+		noise_params = {
+			offset = -0.1,
+			scale = 0.1,
+			spread = {x = 200, y = 200, z = 200},
+			seed = 7013,
+			octaves = 3,
+			persist = 1,
+		},
+		biomes = {
+			"desert_ocean",
+			"savanna_ocean",
+			"rainforest_ocean",
+		},
+		y_min = -8,
+		y_max = -2,
+		schematic = minetest.get_modpath("default") .. "/schematics/corals.mts",
+		flags = "place_center_x, place_center_z",
+		rotation = "random",
+	})
 end
 
 

mods/flowers/mapgen.lua

@@ -94,8 +94,7 @@ local function register_flower(seed, name)
 			octaves = 3,
 			persist = 0.6
 		},
-		biomes = {"stone_grassland", "sandstone_grassland",
-			"deciduous_forest", "coniferous_forest"},
+		biomes = {"grassland", "deciduous_forest", "coniferous_forest"},
 		y_min = 1,
 		y_max = 31000,
 		decoration = "flowers:"..name,
@@ -110,7 +109,7 @@ local function register_mushroom(name)
 		noise_params = {
 			offset = 0,
 			scale = 0.006,
-			spread = {x = 200, y = 200, z = 200},
+			spread = {x = 250, y = 250, z = 250},
 			seed = 2,
 			octaves = 3,
 			persist = 0.66
@@ -135,10 +134,10 @@ local function register_waterlily()
 			octaves = 3,
 			persist = 0.7
 		},
-		biomes = {"rainforest_swamp", "savanna_swamp", "deciduous_forest_swamp"},
+		biomes = {"rainforest_swamp", "savanna_shore", "deciduous_forest_shore"},
 		y_min = 0,
 		y_max = 0,
-		schematic = minetest.get_modpath("flowers").."/schematics/waterlily.mts",
+		schematic = minetest.get_modpath("flowers") .. "/schematics/waterlily.mts",
 		rotation = "random",
 	})
 end
@@ -162,12 +161,9 @@ end
 -- Detect mapgen to select functions
 --
 
--- Mods using singlenode mapgen can call these functions to enable
--- the use of minetest.generate_ores or minetest.generate_decorations
-
 local mg_name = minetest.get_mapgen_setting("mg_name")
 if mg_name == "v6" then
 	flowers.register_mgv6_decorations()
-elseif mg_name ~= "singlenode" then
+else
 	flowers.register_decorations()
 end