X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=mods%2Fdefault%2Fmapgen.lua;h=0018d8414eef2678078508e6a969ec9397fec975;hb=e67e28d226046bd50416999d924ddf9e6cd6de7d;hp=4865341839625ef22893ebe1b9d438f2c32f0ac2;hpb=0914e595c7ab01a66188fca52561df26f852d7c4;p=oweals%2Fminetest_game.git

diff --git a/mods/default/mapgen.lua b/mods/default/mapgen.lua
index 48653418..0018d841 100644
--- a/mods/default/mapgen.lua
+++ b/mods/default/mapgen.lua
@@ -2,7 +2,6 @@
 -- Aliases for map generator outputs
 --
 
-
 minetest.register_alias("mapgen_stone", "default:stone")
 minetest.register_alias("mapgen_dirt", "default:dirt")
 minetest.register_alias("mapgen_dirt_with_grass", "default:dirt_with_grass")
@@ -19,15 +18,19 @@ minetest.register_alias("mapgen_snow", "default:snow")
 minetest.register_alias("mapgen_ice", "default:ice")
 minetest.register_alias("mapgen_sandstone", "default:sandstone")
 
+-- Flora
+
 minetest.register_alias("mapgen_tree", "default:tree")
 minetest.register_alias("mapgen_leaves", "default:leaves")
 minetest.register_alias("mapgen_apple", "default:apple")
 minetest.register_alias("mapgen_jungletree", "default:jungletree")
 minetest.register_alias("mapgen_jungleleaves", "default:jungleleaves")
 minetest.register_alias("mapgen_junglegrass", "default:junglegrass")
-minetest.register_alias("mapgen_pinetree", "default:pinetree")
+minetest.register_alias("mapgen_pine_tree", "default:pine_tree")
 minetest.register_alias("mapgen_pine_needles", "default:pine_needles")
 
+-- Dungeons
+
 minetest.register_alias("mapgen_cobble", "default:cobble")
 minetest.register_alias("mapgen_stair_cobble", "stairs:stair_cobble")
 minetest.register_alias("mapgen_mossycobble", "default:mossycobble")
@@ -39,86 +42,97 @@ minetest.register_alias("mapgen_stair_sandstonebrick", "stairs:stair_sandstonebr
 -- Register ores
 --
 
-
+-- All mapgens except singlenode
 -- Blob ore first to avoid other ores inside blobs
 
 function default.register_ores()
+
+	-- Clay
+
 	minetest.register_ore({ 
 		ore_type         = "blob",
 		ore              = "default:clay",
 		wherein          = {"default:sand"},
-		clust_scarcity   = 24 * 24 * 24,
-		clust_size       = 7,
+		clust_scarcity   = 16 * 16 * 16,
+		clust_size       = 5,
 		y_min            = -15,
 		y_max            = 0,
-		noise_threshhold = 0,
+		noise_threshhold = 0.0,
 		noise_params     = {
-			offset = 0.35,
+			offset = 0.5,
 			scale = 0.2,
 			spread = {x = 5, y = 5, z = 5},
 			seed = -316,
 			octaves = 1,
-			persist = 0.5
+			persist = 0.0
 		},
 	})
 
+	-- Sand
+
 	minetest.register_ore({ 
 		ore_type         = "blob",
 		ore              = "default:sand",
 		wherein          = {"default:stone"},
-		clust_scarcity   = 24 * 24 * 24,
-		clust_size       = 7,
-		y_min            = -63,
+		clust_scarcity   = 16 * 16 * 16,
+		clust_size       = 5,
+		y_min            = -31,
 		y_max            = 4,
-		noise_threshhold = 0,
+		noise_threshhold = 0.0,
 		noise_params     = {
-			offset = 0.35,
+			offset = 0.5,
 			scale = 0.2,
 			spread = {x = 5, y = 5, z = 5},
 			seed = 2316,
 			octaves = 1,
-			persist = 0.5
+			persist = 0.0
 		},
 	})
 
+	-- Dirt
+
 	minetest.register_ore({
 		ore_type         = "blob",
 		ore              = "default:dirt",
 		wherein          = {"default:stone"},
-		clust_scarcity   = 24 * 24 * 24,
-		clust_size       = 7,
-		y_min            = -63,
+		clust_scarcity   = 16 * 16 * 16,
+		clust_size       = 5,
+		y_min            = -31,
 		y_max            = 31000,
-		noise_threshhold = 0,
+		noise_threshhold = 0.0,
 		noise_params     = {
-			offset = 0.35,
+			offset = 0.5,
 			scale = 0.2,
 			spread = {x = 5, y = 5, z = 5},
 			seed = 17676,
 			octaves = 1,
-			persist = 0.5
+			persist = 0.0
 		},
 	})
 
+	-- Gravel
+
 	minetest.register_ore({
 		ore_type         = "blob",
 		ore              = "default:gravel",
 		wherein          = {"default:stone"},
-		clust_scarcity   = 24 * 24 * 24,
-		clust_size       = 7,
+		clust_scarcity   = 16 * 16 * 16,
+		clust_size       = 5,
 		y_min            = -31000,
 		y_max            = 31000,
-		noise_threshhold = 0,
+		noise_threshhold = 0.0,
 		noise_params     = {
-			offset = 0.35,
+			offset = 0.5,
 			scale = 0.2,
 			spread = {x = 5, y = 5, z = 5},
 			seed = 766,
 			octaves = 1,
-			persist = 0.5
+			persist = 0.0
 		},
 	})
 
+	-- Coal
+
 	minetest.register_ore({
 		ore_type       = "scatter",
 		ore            = "default:stone_with_coal",
@@ -141,6 +155,8 @@ function default.register_ores()
 		y_max          = 0,
 	})
 
+	-- Iron
+
 	minetest.register_ore({
 		ore_type       = "scatter",
 		ore            = "default:stone_with_iron",
@@ -185,6 +201,8 @@ function default.register_ores()
 		y_max          = -64,
 	})
 
+	--Mese
+
 	minetest.register_ore({
 		ore_type       = "scatter",
 		ore            = "default:stone_with_mese",
@@ -218,6 +236,8 @@ function default.register_ores()
 		y_max          = -1024,
 	})
 
+	-- Gold
+
 	minetest.register_ore({
 		ore_type       = "scatter",
 		ore            = "default:stone_with_gold",
@@ -240,6 +260,8 @@ function default.register_ores()
 		y_max          = -256,
 	})
 
+	-- Diamond
+
 	minetest.register_ore({
 		ore_type       = "scatter",
 		ore            = "default:stone_with_diamond",
@@ -262,6 +284,8 @@ function default.register_ores()
 		y_max          = -256,
 	})
 
+	-- Copper
+
 	minetest.register_ore({
 		ore_type       = "scatter",
 		ore            = "default:stone_with_copper",
@@ -290,12 +314,128 @@ end
 -- Register biomes
 --
 
+-- All mapgens except mgv6 and singlenode
 
 function default.register_biomes()
 	minetest.clear_registered_biomes()
 
+	-- Permanent ice
+
+	minetest.register_biome({
+		name = "glacier",
+		node_dust = "default:snowblock",
+		node_top = "default:snowblock",
+		depth_top = 1,
+		node_filler = "default:snowblock",
+		depth_filler = 3,
+		node_stone = "default:ice",
+		node_water_top = "default:ice",
+		depth_water_top = 10,
+		--node_water = "",
+		node_river_water = "default:ice",
+		y_min = -8,
+		y_max = 31000,
+		heat_point = 0,
+		humidity_point = 50,
+	})
+
+	minetest.register_biome({
+		name = "glacier_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 = "",
+		--node_river_water = "",
+		y_min = -112,
+		y_max = -9,
+		heat_point = 0,
+		humidity_point = 50,
+	})
+
+	-- Cold
+
 	minetest.register_biome({
-		name = "default:grassland",
+		name = "tundra",
+		--node_dust = "",
+		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 = "",
+		y_min = 2,
+		y_max = 31000,
+		heat_point = 15,
+		humidity_point = 35,
+	})
+
+	minetest.register_biome({
+		name = "tundra_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 = "",
+		y_min = -112,
+		y_max = 1,
+		heat_point = 15,
+		humidity_point = 35,
+	})
+
+
+	minetest.register_biome({
+		name = "taiga",
+		node_dust = "default:snow",
+		node_top = "default:dirt_with_snow",
+		depth_top = 1,
+		node_filler = "default:dirt",
+		depth_filler = 3,
+		--node_stone = "",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		y_min = 2,
+		y_max = 31000,
+		heat_point = 15,
+		humidity_point = 65,
+	})
+
+	minetest.register_biome({
+		name = "taiga_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 = "",
+		y_min = -112,
+		y_max = 1,
+		heat_point = 15,
+		humidity_point = 65,
+	})
+
+	-- Temperate
+
+	minetest.register_biome({
+		name = "stone_grassland",
 		--node_dust = "",
 		node_top = "default:dirt_with_grass",
 		depth_top = 1,
@@ -305,25 +445,324 @@ function default.register_biomes()
 		--node_water_top = "",
 		--depth_water_top = ,
 		--node_water = "",
+		--node_river_water = "",
 		y_min = 5,
 		y_max = 31000,
-		heat_point = 50,
+		heat_point = 40,
+		humidity_point = 35,
+	})
+
+	minetest.register_biome({
+		name = "stone_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 = "",
+		y_min = -112,
+		y_max = 4,
+		heat_point = 40,
+		humidity_point = 35,
+	})
+
+
+	minetest.register_biome({
+		name = "coniferous_forest",
+		--node_dust = "",
+		node_top = "default:dirt_with_grass",
+		depth_top = 1,
+		node_filler = "default:dirt",
+		depth_filler = 3,
+		--node_stone = "",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		y_min = 5,
+		y_max = 31000,
+		heat_point = 40,
+		humidity_point = 65,
+	})
+
+	minetest.register_biome({
+		name = "coniferous_forest_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 = "",
+		y_min = -112,
+		y_max = 4,
+		heat_point = 40,
+		humidity_point = 65,
+	})
+
+
+	minetest.register_biome({
+		name = "sandstone_grassland",
+		--node_dust = "",
+		node_top = "default:dirt_with_grass",
+		depth_top = 1,
+		node_filler = "default:dirt",
+		depth_filler = 1,
+		node_stone = "default:sandstone",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		y_min = 5,
+		y_max = 31000,
+		heat_point = 60,
+		humidity_point = 35,
+	})
+
+	minetest.register_biome({
+		name = "sandstone_grassland_ocean",
+		--node_dust = "",
+		node_top = "default:sand",
+		depth_top = 1,
+		node_filler = "default:sand",
+		depth_filler = 3,
+		node_stone = "default:sandstone",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		y_min = -112,
+		y_max = 4,
+		heat_point = 60,
+		humidity_point = 35,
+	})
+
+
+	minetest.register_biome({
+		name = "deciduous_forest",
+		--node_dust = "",
+		node_top = "default:dirt_with_grass",
+		depth_top = 1,
+		node_filler = "default:dirt",
+		depth_filler = 3,
+		--node_stone = "",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		y_min = 1,
+		y_max = 31000,
+		heat_point = 60,
+		humidity_point = 65,
+	})
+
+	minetest.register_biome({
+		name = "deciduous_forest_swamp",
+		--node_dust = "",
+		node_top = "default:dirt",
+		depth_top = 1,
+		node_filler = "default:dirt",
+		depth_filler = 3,
+		--node_stone = "",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		y_min = -3,
+		y_max = 0,
+		heat_point = 60,
+		humidity_point = 65,
+	})
+
+	minetest.register_biome({
+		name = "deciduous_forest_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 = "",
+		y_min = -112,
+		y_max = -4,
+		heat_point = 60,
+		humidity_point = 65,
+	})
+
+	-- Hot
+
+	minetest.register_biome({
+		name = "desert",
+		--node_dust = "",
+		node_top = "default:desert_sand",
+		depth_top = 1,
+		node_filler = "default:desert_sand",
+		depth_filler = 1,
+		node_stone = "default:desert_stone",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		y_min = 5,
+		y_max = 31000,
+		heat_point = 85,
+		humidity_point = 20,
+	})
+
+	minetest.register_biome({
+		name = "desert_ocean",
+		--node_dust = "",
+		node_top = "default:sand",
+		depth_top = 1,
+		node_filler = "default:sand",
+		depth_filler = 3,
+		node_stone = "default:desert_stone",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		y_min = -112,
+		y_max = 4,
+		heat_point = 85,
+		humidity_point = 20,
+	})
+
+
+	minetest.register_biome({
+		name = "savanna",
+		--node_dust = "",
+		node_top = "default:dirt_with_dry_grass",
+		depth_top = 1,
+		node_filler = "default:dirt",
+		depth_filler = 1,
+		--node_stone = "",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		y_min = 1,
+		y_max = 31000,
+		heat_point = 85,
+		humidity_point = 50,
+	})
+
+	minetest.register_biome({
+		name = "savanna_swamp",
+		--node_dust = "",
+		node_top = "default:dirt",
+		depth_top = 1,
+		node_filler = "default:dirt",
+		depth_filler = 3,
+		--node_stone = "",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		y_min = -3,
+		y_max = 0,
+		heat_point = 85,
+		humidity_point = 50,
+	})
+
+	minetest.register_biome({
+		name = "savanna_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 = "",
+		y_min = -112,
+		y_max = -4,
+		heat_point = 85,
 		humidity_point = 50,
 	})
 
+
 	minetest.register_biome({
-		name = "default:grassland_ocean",
+		name = "rainforest",
+		--node_dust = "",
+		node_top = "default:dirt_with_grass",
+		depth_top = 1,
+		node_filler = "default:dirt",
+		depth_filler = 3,
+		--node_stone = "",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		y_min = 1,
+		y_max = 31000,
+		heat_point = 85,
+		humidity_point = 80,
+	})
+
+	minetest.register_biome({
+		name = "rainforest_swamp",
+		--node_dust = "",
+		node_top = "default:dirt",
+		depth_top = 1,
+		node_filler = "default:dirt",
+		depth_filler = 3,
+		--node_stone = "",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
+		y_min = -3,
+		y_max = 0,
+		heat_point = 85,
+		humidity_point = 80,
+	})
+
+	minetest.register_biome({
+		name = "rainforest_ocean",
 		--node_dust = "",
 		node_top = "default:sand",
 		depth_top = 1,
 		node_filler = "default:sand",
-		depth_filler = 2,
+		depth_filler = 3,
 		--node_stone = "",
 		--node_water_top = "",
 		--depth_water_top = ,
 		--node_water = "",
+		--node_river_water = "",
+		y_min = -112,
+		y_max = -4,
+		heat_point = 85,
+		humidity_point = 80,
+	})
+
+	-- Underground
+
+	minetest.register_biome({
+		name = "underground",
+		--node_dust = "",
+		--node_top = "",
+		--depth_top = ,
+		--node_filler = "",
+		--depth_filler = ,
+		--node_stone = "",
+		--node_water_top = "",
+		--depth_water_top = ,
+		--node_water = "",
+		--node_river_water = "",
 		y_min = -31000,
-		y_max = 4,
+		y_max = -113,
 		heat_point = 50,
 		humidity_point = 50,
 	})
@@ -331,11 +770,13 @@ end
 
 
 --
--- Register mgv6 decorations
+-- Register decorations
 --
 
+-- Mgv6
 
 function default.register_mgv6_decorations()
+	minetest.clear_registered_decorations()
 
 	-- Papyrus
 
@@ -355,7 +796,7 @@ function default.register_mgv6_decorations()
 		y_max = 1,
 		decoration = "default:papyrus",
 		height = 2,
-	        height_max = 4,
+		height_max = 4,
 		spawn_by = "default:water_source",
 		num_spawn_by = 1,
 	})
@@ -381,7 +822,7 @@ function default.register_mgv6_decorations()
 	        height_max = 4,
 	})
 
-	-- Grasses
+	-- Long grasses
 
 	for length = 1, 5 do
 		minetest.register_decoration({
@@ -422,244 +863,252 @@ function default.register_mgv6_decorations()
 	})
 end
 
+-- All mapgens except mgv6 and singlenode
 
---
--- Register decorations
---
-
-
-function default.register_decorations()
-
-	-- Flowers
-
+local function register_grass_decoration(offset, scale, length)
 	minetest.register_decoration({
 		deco_type = "simple",
-		place_on = {"default:dirt_with_grass"},
+		place_on = {"default:dirt_with_grass", "default:sand"},
 		sidelen = 16,
 		noise_params = {
-			offset = -0.02,
-			scale = 0.03,
+			offset = offset,
+			scale = scale,
 			spread = {x = 200, y = 200, z = 200},
-			seed = 436,
+			seed = 329,
 			octaves = 3,
 			persist = 0.6
 		},
-		biomes = {"default:grassland"},
-		y_min = -31000,
+		biomes = {"stone_grassland", "sandstone_grassland",
+			"deciduous_forest", "coniferous_forest"},
+		y_min = 1,
 		y_max = 31000,
-		decoration = "flowers:rose",
+		decoration = "default:grass_"..length,
 	})
-	
+end
+
+local function register_dry_grass_decoration(offset, scale, length)
 	minetest.register_decoration({
 		deco_type = "simple",
-		place_on = {"default:dirt_with_grass"},
+		place_on = {"default:dirt_with_dry_grass"},
 		sidelen = 16,
 		noise_params = {
-			offset = -0.02,
-			scale = 0.03,
+			offset = offset,
+			scale = scale,
 			spread = {x = 200, y = 200, z = 200},
-			seed = 19822,
+			seed = 329,
 			octaves = 3,
 			persist = 0.6
 		},
-		biomes = {"default:grassland"},
-		y_min = 33,
+		biomes = {"savanna"},
+		y_min = 1,
 		y_max = 31000,
-		decoration = "flowers:tulip",
+		decoration = "default:dry_grass_"..length,
 	})
-	
+end
+
+function default.register_decorations()
+	minetest.clear_registered_decorations()
+
+	-- Apple tree
+
 	minetest.register_decoration({
-		deco_type = "simple",
+		deco_type = "schematic",
 		place_on = {"default:dirt_with_grass"},
 		sidelen = 16,
 		noise_params = {
-			offset = -0.02,
-			scale = 0.03,
-			spread = {x = 200, y = 200, z = 200},
-			seed = 1220999,
+			offset = 0.04,
+			scale = 0.02,
+			spread = {x = 250, y = 250, z = 250},
+			seed = 2,
 			octaves = 3,
-			persist = 0.6
+			persist = 0.66
 		},
-		biomes = {"default:grassland"},
-		y_min = -31000,
+		biomes = {"deciduous_forest"},
+		y_min = 1,
 		y_max = 31000,
-		decoration = "flowers:dandelion_yellow",
+		schematic = minetest.get_modpath("default").."/schematics/apple_tree.mts",
+		flags = "place_center_x, place_center_z",
 	})
-	
+
+	-- Jungle tree
+
 	minetest.register_decoration({
-		deco_type = "simple",
-		place_on = {"default:dirt_with_grass"},
-		sidelen = 16,
-		noise_params = {
-			offset = -0.02,
-			scale = 0.03,
-			spread = {x = 200, y = 200, z = 200},
-			seed = 36662,
-			octaves = 3,
-			persist = 0.6
-		},
-		biomes = {"default:grassland"},
-		y_min = -31000,
+		deco_type = "schematic",
+		place_on = {"default:dirt_with_grass", "default:dirt"},
+		sidelen = 80,
+		fill_ratio = 0.09,
+		biomes = {"rainforest", "rainforest_swamp"},
+		y_min = 0,
 		y_max = 31000,
-		decoration = "flowers:geranium",
+		schematic = minetest.get_modpath("default").."/schematics/jungle_tree.mts",
+		flags = "place_center_x, place_center_z",
+		rotation = "random",
 	})
-	
+
+	-- Taiga and temperate coniferous forest pine tree
+
 	minetest.register_decoration({
-		deco_type = "simple",
-		place_on = {"default:dirt_with_grass"},
+		deco_type = "schematic",
+		place_on = {"default:dirt_with_snow", "default:dirt_with_grass"},
 		sidelen = 16,
 		noise_params = {
-			offset = -0.02,
-			scale = 0.03,
-			spread = {x = 200, y = 200, z = 200},
-			seed = 1133,
+			offset = 0.04,
+			scale = 0.02,
+			spread = {x = 250, y = 250, z = 250},
+			seed = 2,
 			octaves = 3,
-			persist = 0.6
+			persist = 0.66
 		},
-		biomes = {"default:grassland"},
-		y_min = -31000,
+		biomes = {"taiga", "coniferous_forest"},
+		y_min = 2,
 		y_max = 31000,
-		decoration = "flowers:viola",
+		schematic = minetest.get_modpath("default").."/schematics/pine_tree.mts",
+		flags = "place_center_x, place_center_z",
 	})
-	
+
+	-- Acacia tree
+
 	minetest.register_decoration({
-		deco_type = "simple",
-		place_on = {"default:dirt_with_grass"},
-		sidelen = 16,
+		deco_type = "schematic",
+		place_on = {"default:dirt_with_dry_grass"},
+		sidelen = 80,
 		noise_params = {
-			offset = -0.02,
-			scale = 0.03,
-			spread = {x = 200, y = 200, z = 200},
-			seed = 73133,
+			offset = 0,
+			scale = 0.003,
+			spread = {x = 250, y = 250, z = 250},
+			seed = 2,
 			octaves = 3,
-			persist = 0.6
+			persist = 0.66
 		},
-		biomes = {"default:grassland"},
-		y_min = -31000,
+		biomes = {"savanna"},
+		y_min = 1,
 		y_max = 31000,
-		decoration = "flowers:dandelion_white",
+		schematic = minetest.get_modpath("default").."/schematics/acacia_tree.mts",
+		flags = "place_center_x, place_center_z",
+		rotation = "random",
 	})
 
-	-- Grasses
+	-- Large cactus
 
 	minetest.register_decoration({
-		deco_type = "simple",
-		place_on = {"default:dirt_with_grass"},
-		sidelen = 16,
+		deco_type = "schematic",
+		place_on = {"default:desert_sand"},
+		sidelen = 80,
 		noise_params = {
-			offset = 0.04,
-			scale = 0.04,
+			offset = -0.0005,
+			scale = 0.0015,
 			spread = {x = 200, y = 200, z = 200},
-			seed = 66440,
+			seed = 230,
 			octaves = 3,
 			persist = 0.6
 		},
-		biomes = {"default:grassland"},
-		y_min = -31000,
+		biomes = {"desert"},
+		y_min = 5,
 		y_max = 31000,
-		decoration = "default:grass_1",
+		schematic = minetest.get_modpath("default").."/schematics/large_cactus.mts",
+		flags = "place_center_x",
+		rotation = "random",
 	})
-	
+
+	-- Cactus
+
 	minetest.register_decoration({
 		deco_type = "simple",
-		place_on = {"default:dirt_with_grass"},
-		sidelen = 16,
+		place_on = {"default:desert_sand"},
+		sidelen = 80,
 		noise_params = {
-			offset = 0.02,
-			scale = 0.06,
+			offset = -0.0005,
+			scale = 0.0015,
 			spread = {x = 200, y = 200, z = 200},
-			seed = 66440,
+			seed = 230,
 			octaves = 3,
 			persist = 0.6
 		},
-		biomes = {"default:grassland"},
-		y_min = -31000,
+		biomes = {"desert"},
+		y_min = 5,
 		y_max = 31000,
-		decoration = "default:grass_2",
+		decoration = "default:cactus",
+		height = 2,
+		height_max = 5,
 	})
-	
+
+	-- Papyrus
+
 	minetest.register_decoration({
-		deco_type = "simple",
-		place_on = {"default:dirt_with_grass"},
+		deco_type = "schematic",
+		place_on = {"default:dirt"},
 		sidelen = 16,
 		noise_params = {
-			offset = 0,
-			scale = 0.08,
+			offset = -0.3,
+			scale = 0.7,
 			spread = {x = 200, y = 200, z = 200},
-			seed = 66440,
+			seed = 354,
 			octaves = 3,
-			persist = 0.6
+			persist = 0.7
 		},
-		biomes = {"default:grassland"},
-		y_min = -31000,
-		y_max = 31000,
-		decoration = "default:grass_3",
+		biomes = {"savanna_swamp"},
+		y_min = 0,
+		y_max = 0,
+		schematic = minetest.get_modpath("default").."/schematics/papyrus.mts",
 	})
-	
+
+	-- Grasses
+
+	register_grass_decoration(-0.03,  0.09,  5)
+	register_grass_decoration(-0.015, 0.075, 4)
+	register_grass_decoration(0,      0.06,  3)
+	register_grass_decoration(0.015,  0.045, 2)
+	register_grass_decoration(0.03,   0.03,  1)
+
+	-- Dry grasses
+
+	register_dry_grass_decoration(0.01, 0.05,  5)
+	register_dry_grass_decoration(0.03, 0.03,  4)
+	register_dry_grass_decoration(0.05, 0.01,  3)
+	register_dry_grass_decoration(0.07, -0.01, 2)
+	register_dry_grass_decoration(0.09, -0.03, 1)
+
+	-- Junglegrass
+
 	minetest.register_decoration({
 		deco_type = "simple",
 		place_on = {"default:dirt_with_grass"},
-		sidelen = 16,
-		noise_params = {
-			offset = -0.02,
-			scale = 0.10,
-			spread = {x = 200, y = 200, z = 200},
-			seed = 66440,
-			octaves = 3,
-			persist = 0.6
-		},
-		biomes = {"default:grassland"},
-		y_min = -31000,
+		sidelen = 80,
+		fill_ratio = 0.1,
+		biomes = {"rainforest"},
+		y_min = 1,
 		y_max = 31000,
-		decoration = "default:grass_4",
+		decoration = "default:junglegrass",
 	})
-	
+
+	-- Dry shrub
+
 	minetest.register_decoration({
 		deco_type = "simple",
-		place_on = {"default:dirt_with_grass"},
+		place_on = {"default:desert_sand", "default:dirt_with_snow"},
 		sidelen = 16,
 		noise_params = {
-			offset = -0.04,
-			scale = 0.12,
+			offset = 0,
+			scale = 0.02,
 			spread = {x = 200, y = 200, z = 200},
-			seed = 66440,
+			seed = 329,
 			octaves = 3,
 			persist = 0.6
 		},
-		biomes = {"default:grassland"},
-		y_min = -31000,
+		biomes = {"desert", "tundra"},
+		y_min = 2,
 		y_max = 31000,
-		decoration = "default:grass_5",
+		decoration = "default:dry_shrub",
 	})
 end
 
 
 --
--- Detect mapgen to select functions
+-- Generate nyan cats
 --
 
+-- All mapgens except singlenode
 
--- Mods using singlenode mapgen can call these functions to enable
--- the use of minetest.generate_ores or minetest.generate_decorations
-
-local mg_params = minetest.get_mapgen_params()
-if mg_params.mgname == "v6" then
-	default.register_ores()
-	default.register_mgv6_decorations()
-elseif mg_params.mgname ~= "singlenode" then
-	default.register_ores()
-	default.register_biomes()
-	default.register_decorations()
-end
-
-
---
--- Generate nyan cats in all mapgens
---
-
-
--- facedir: 0/1/2/3 (head node facedir value)
--- length: length of rainbow tail
 function default.make_nyancat(pos, facedir, length)
 	local tailvec = {x = 0, y = 0, z = 0}
 	if facedir == 0 then
@@ -671,7 +1120,6 @@ function default.make_nyancat(pos, facedir, length)
 	elseif facedir == 3 then
 		tailvec.x = -1
 	else
-		--print("default.make_nyancat(): Invalid facedir: "+dump(facedir))
 		facedir = 0
 		tailvec.z = 1
 	end
@@ -684,7 +1132,6 @@ function default.make_nyancat(pos, facedir, length)
 	end
 end
 
-
 function default.generate_nyancats(minp, maxp, seed)
 	local height_min = -31000
 	local height_max = -32
@@ -708,4 +1155,21 @@ function default.generate_nyancats(minp, maxp, seed)
 end
 
 
-minetest.register_on_generated(default.generate_nyancats)
+--
+-- 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_params = minetest.get_mapgen_params()
+if mg_params.mgname == "v6" then
+	default.register_ores()
+	default.register_mgv6_decorations()
+	minetest.register_on_generated(default.generate_nyancats)
+elseif mg_params.mgname ~= "singlenode" then
+	default.register_ores()
+	default.register_biomes()
+	default.register_decorations()
+	minetest.register_on_generated(default.generate_nyancats)
+end