Add Trees Mod (08/2019); Mod created by Sporax.

This mod provide new kind of trees to your minetest world!

About licenses :

The code is under the license : GNU Lesser General Public License, version 2.1 (same one as the minetest default mod). Textures and schems are under the License : Creative Commons Attribution-ShareAlike 4.0 International Public License.

See license_code.txt for informations about the code source license and see schem_texture_license.txt for informations about the textures and schems license.

Settings :

1. Add to your minetest.conf: "chunksize = 6"

2. For a better experience, you can modify your trees mapgen settings (by replacing this function):

function default.register_decorations()

	-- Apple tree and log

	minetest.register_decoration({
		name = "default:apple_tree",
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0,
			scale = 0.0045,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_max = 31000,
		y_min = 1,
		schematic = minetest.get_modpath("default") .. "/schematics/apple_tree.mts",
		flags = "place_center_x, place_center_z",
		rotation = "random",
	})

	minetest.register_decoration({
		name = "default:apple_log",
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		place_offset_y = 1,
		sidelen = 16,
		noise_params = {
			offset = 0.0012,
			scale = 0.0007,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_max = 31000,
		y_min = 1,
		schematic = minetest.get_modpath("default") .. "/schematics/apple_log.mts",
		flags = "place_center_x",
		rotation = "random",
		spawn_by = "default:dirt_with_grass",
		num_spawn_by = 8,
	})
	
	-- Emergent jungle tree
	-- Due to 32 node height, altitude is limited and prescence depends on chunksize

	local chunksize = tonumber(minetest.get_mapgen_setting("chunksize"))
	if chunksize >= 5 then
		minetest.register_decoration({
			name = "default:emergent_jungle_tree",
			deco_type = "schematic",
			place_on = {"default:dirt_with_rainforest_litter"},
			sidelen = 80,
			noise_params = {
				offset = 0.0,
				scale = 0.0018,
				spread = {x = 250, y = 250, z = 250},
				seed = 2685,
				octaves = 3,
				persist = 0.7
			},
			biomes = {"rainforest"},
			y_max = 32,
			y_min = 1,
			schematic = minetest.get_modpath("default") ..
					"/schematics/emergent_jungle_tree.mts",
			flags = "place_center_x, place_center_z",
			rotation = "random",
			place_offset_y = -4,
		})
	end

	-- Jungle tree and log

	minetest.register_decoration({
		name = "default:jungle_tree",
		deco_type = "schematic",
		place_on = {"default:dirt_with_rainforest_litter", "default:dirt"},
		sidelen = 80,
		fill_ratio = 0.028,
		biomes = {"rainforest", "rainforest_swamp"},
		y_max = 31000,
		y_min = -1,
		schematic = minetest.get_modpath("default") .. "/schematics/jungle_tree.mts",
		flags = "place_center_x, place_center_z",
		rotation = "random",
	})

	minetest.register_decoration({
		name = "default:jungle_log",
		deco_type = "schematic",
		place_on = {"default:dirt_with_rainforest_litter"},
		place_offset_y = 1,
		sidelen = 80,
		fill_ratio = 0.005,
		biomes = {"rainforest", "rainforest_swamp"},
		y_max = 31000,
		y_min = 1,
		schematic = minetest.get_modpath("default") .. "/schematics/jungle_log.mts",
		flags = "place_center_x",
		rotation = "random",
		spawn_by = "default:dirt_with_rainforest_litter",
		num_spawn_by = 8,
	})

	-- Taiga and temperate coniferous forest pine tree, small pine tree and log

	minetest.register_decoration({
		name = "default:pine_tree",
		deco_type = "schematic",
		place_on = {"default:dirt_with_snow", "default:dirt_with_coniferous_litter"},
		sidelen = 16,
		noise_params = {
			offset = 0.010,
			scale = 0.002,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"taiga", "coniferous_forest", "floatland_coniferous_forest"},
		y_max = 31000,
		y_min = 4,
		schematic = minetest.get_modpath("default") .. "/schematics/pine_tree.mts",
		flags = "place_center_x, place_center_z",
	})

	minetest.register_decoration({
		name = "default:small_pine_tree",
		deco_type = "schematic",
		place_on = {"default:dirt_with_snow", "default:dirt_with_coniferous_litter"},
		sidelen = 16,
		noise_params = {
			offset = 0.010,
			scale = 0.0088,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"taiga", "coniferous_forest", "floatland_coniferous_forest"},
		y_max = 31000,
		y_min = 4,
		schematic = minetest.get_modpath("default") .. "/schematics/small_pine_tree.mts",
		flags = "place_center_x, place_center_z",
	})

	minetest.register_decoration({
		name = "default:pine_log",
		deco_type = "schematic",
		place_on = {"default:dirt_with_snow", "default:dirt_with_coniferous_litter"},
		place_offset_y = 1,
		sidelen = 80,
		fill_ratio = 0.0018,
		biomes = {"taiga", "coniferous_forest", "floatland_coniferous_forest"},
		y_max = 31000,
		y_min = 4,
		schematic = minetest.get_modpath("default") .. "/schematics/pine_log.mts",
		flags = "place_center_x",
		rotation = "random",
		spawn_by = {"default:dirt_with_snow", "default:dirt_with_coniferous_litter"},
		num_spawn_by = 8,
	})

	-- Acacia tree and log

	minetest.register_decoration({
		name = "default:acacia_tree",
		deco_type = "schematic",
		place_on = {"default:dirt_with_dry_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0,
			scale = 0.002,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"savanna"},
		y_max = 31000,
		y_min = 1,
		schematic = minetest.get_modpath("default") .. "/schematics/acacia_tree.mts",
		flags = "place_center_x, place_center_z",
		rotation = "random",
	})

	minetest.register_decoration({
		name = "default:acacia_log",
		deco_type = "schematic",
		place_on = {"default:dirt_with_dry_grass"},
		place_offset_y = 1,
		sidelen = 16,
		noise_params = {
			offset = 0,
			scale = 0.001,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"savanna"},
		y_max = 31000,
		y_min = 1,
		schematic = minetest.get_modpath("default") .. "/schematics/acacia_log.mts",
		flags = "place_center_x",
		rotation = "random",
		spawn_by = "default:dirt_with_dry_grass",
		num_spawn_by = 8,
	})

	-- Aspen tree and log

	minetest.register_decoration({
		name = "default:aspen_tree",
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		sidelen = 16,
		noise_params = {
			offset = 0.0,
			scale = 0.0025,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_max = 31000,
		y_min = 1,
		schematic = minetest.get_modpath("default") .. "/schematics/aspen_tree.mts",
		flags = "place_center_x, place_center_z",
	})

	minetest.register_decoration({
		name = "default:aspen_log",
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		place_offset_y = 1,
		sidelen = 16,
		noise_params = {
			offset = 0.0,
			scale = -0.0008,
			spread = {x = 250, y = 250, z = 250},
			seed = 2,
			octaves = 3,
			persist = 0.66
		},
		biomes = {"deciduous_forest"},
		y_max = 31000,
		y_min = 1,
		schematic = minetest.get_modpath("default") .. "/schematics/aspen_log.mts",
		flags = "place_center_x",
		rotation = "random",
		spawn_by = "default:dirt_with_grass",
		num_spawn_by = 8,
	})

	-- Large cactus

	minetest.register_decoration({
		name = "default:large_cactus",
		deco_type = "schematic",
		place_on = {"default:desert_sand"},
		sidelen = 16,
		noise_params = {
			offset = -0.0003,
			scale = 0.0011,
			spread = {x = 200, y = 200, z = 200},
			seed = 230,
			octaves = 3,
			persist = 0.6
		},
		biomes = {"desert"},
		y_max = 31000,
		y_min = 4,
		schematic = minetest.get_modpath("default") .. "/schematics/large_cactus.mts",
		flags = "place_center_x, place_center_z",
		rotation = "random",
	})

	-- Cactus

	minetest.register_decoration({
		name = "default:cactus",
		deco_type = "simple",
		place_on = {"default:desert_sand"},
		sidelen = 16,
		noise_params = {
			offset = -0.0003,
			scale = 0.0014,
			spread = {x = 200, y = 200, z = 200},
			seed = 230,
			octaves = 3,
			persist = 0.6
		},
		biomes = {"desert"},
		y_max = 31000,
		y_min = 4,
		decoration = "default:cactus",
		height = 2,
		height_max = 5,
	})

	-- Papyrus

	minetest.register_decoration({
		name = "default:papyrus",
		deco_type = "schematic",
		place_on = {"default:dirt"},
		sidelen = 16,
		noise_params = {
			offset = -0.3,
			scale = 0.7,
			spread = {x = 200, y = 200, z = 200},
			seed = 354,
			octaves = 3,
			persist = 0.7
		},
		biomes = {"savanna_shore"},
		y_max = 0,
		y_min = 0,
		schematic = minetest.get_modpath("default") .. "/schematics/papyrus.mts",
	})

	-- Bush

	minetest.register_decoration({
		name = "default:bush",
		deco_type = "schematic",
		place_on = {"default:dirt_with_grass"},
		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 = {"grassland", "deciduous_forest",
			"floatland_grassland"},
		y_max = 31000,
		y_min = 1,
		schematic = minetest.get_modpath("default") .. "/schematics/bush.mts",
		flags = "place_center_x, place_center_z",
	})

	-- Blueberry bush

	minetest.register_decoration({
		name = "default:blueberry_bush",
		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 = 697,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {"grassland", "snowy_grassland"},
		y_max = 31000,
		y_min = 1,
		place_offset_y = 1,
		schematic = minetest.get_modpath("default") .. "/schematics/blueberry_bush.mts",
		flags = "place_center_x, place_center_z",
	})

	-- Acacia bush

	minetest.register_decoration({
		name = "default:acacia_bush",
		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_max = 31000,
		y_min = 1,
		schematic = minetest.get_modpath("default") .. "/schematics/acacia_bush.mts",
		flags = "place_center_x, place_center_z",
	})

	-- Pine bush

	minetest.register_decoration({
		name = "default:pine_bush",
		deco_type = "schematic",
		place_on = {"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 = {"taiga", "snowy_grassland"},
		y_max = 31000,
		y_min = 4,
		schematic = minetest.get_modpath("default") .. "/schematics/pine_bush.mts",
		flags = "place_center_x, place_center_z",
	})

	-- 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)

	-- Ferns

	register_fern_decoration(14936, 3)
	register_fern_decoration(801,   2)
	register_fern_decoration(5,     1)

	-- Junglegrass

	minetest.register_decoration({
		name = "default:junglegrass",
		deco_type = "simple",
		place_on = {"default:dirt_with_rainforest_litter"},
		sidelen = 80,
		fill_ratio = 0.1,
		biomes = {"rainforest"},
		y_max = 31000,
		y_min = 1,
		decoration = "default:junglegrass",
	})

	-- Dry shrub

	minetest.register_decoration({
		name = "default:dry_shrub",
		deco_type = "simple",
		place_on = {"default:desert_sand",
			"default:sand", "default:silver_sand"},
		sidelen = 16,
		noise_params = {
			offset = 0,
			scale = 0.02,
			spread = {x = 200, y = 200, z = 200},
			seed = 329,
			octaves = 3,
			persist = 0.6
		},
		biomes = {"desert", "sandstone_desert", "cold_desert"},
		y_max = 31000,
		y_min = 2,
		decoration = "default:dry_shrub",
		param2 = 4,
	})

	-- Marram grass

	minetest.register_decoration({
		name = "default:marram_grass",
		deco_type = "simple",
		place_on = {"default:sand"},
		sidelen = 4,
		noise_params = {
			offset = -0.4,
			scale = 3.0,
			spread = {x = 16, y = 16, z = 16},
			seed = 513337,
			octaves = 1,
			persist = 0.5,
			flags = "absvalue"
		},
		biomes = {"coniferous_forest_dunes", "grassland_dunes"},
		y_max = 6,
		y_min = 4,
		decoration = {
			"default:marram_grass_1",
			"default:marram_grass_2",
			"default:marram_grass_3",
		},
	})

	-- Tundra moss

	minetest.register_decoration({
		deco_type = "simple",
		place_on = {"default:permafrost_with_stones"},
		sidelen = 4,
		noise_params = {
			offset = -0.8,
			scale = 2.0,
			spread = {x = 100, y = 100, z = 100},
			seed = 53995,
			octaves = 3,
			persist = 1.0
		},
		biomes = {"tundra"},
		y_max = 50,
		y_min = 2,
		decoration = "default:permafrost_with_moss",
		place_offset_y = -1,
		flags = "force_placement",
	})

	-- Tundra patchy snow

	minetest.register_decoration({
		deco_type = "simple",
		place_on = {
			"default:permafrost_with_moss",
			"default:permafrost_with_stones",
			"default:stone",
			"default:gravel"
		},
		sidelen = 4,
		noise_params = {
			offset = 0,
			scale = 1.0,
			spread = {x = 100, y = 100, z = 100},
			seed = 172555,
			octaves = 3,
			persist = 1.0
		},
		biomes = {"tundra", "tundra_beach"},
		y_max = 50,
		y_min = 1,
		decoration = "default:snow",
	})

	-- Coral reef

	minetest.register_decoration({
		name = "default:corals",
		deco_type = "simple",
		place_on = {"default:sand"},
		place_offset_y = -1,
		sidelen = 4,
		noise_params = {
			offset = -4,
			scale = 4,
			spread = {x = 50, y = 50, z = 50},
			seed = 7013,
			octaves = 3,
			persist = 0.7,
		},
		biomes = {
			"desert_ocean",
			"savanna_ocean",
			"rainforest_ocean",
		},
		y_max = -2,
		y_min = -8,
		flags = "force_placement",
		decoration = {
			"default:coral_green", "default:coral_pink",
			"default:coral_cyan", "default:coral_brown",
			"default:coral_orange", "default:coral_skeleton",
		},
	})

	-- Kelp

	minetest.register_decoration({
		name = "default:kelp",
		deco_type = "simple",
		place_on = {"default:sand"},
		place_offset_y = -1,
		sidelen = 16,
		noise_params = {
			offset = -0.04,
			scale = 0.1,
			spread = {x = 200, y = 200, z = 200},
			seed = 87112,
			octaves = 3,
			persist = 0.7
		},
		biomes = {
			"taiga_ocean",
			"snowy_grassland_ocean",
			"grassland_ocean",
			"coniferous_forest_ocean",
			"deciduous_forest_ocean",
			"sandstone_desert_ocean",
			"cold_desert_ocean"},
		y_max = -5,
		y_min = -10,
		flags = "force_placement",
		decoration = "default:sand_with_kelp",
		param2 = 48,
		param2_max = 96,
	})
end