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VoxeLibre/mods/MAPGEN/mcl_mapgen_core/init.lua

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--
-- Aliases for map generator outputs
--
mcl_mapgen_core = {}
minetest.register_alias("mapgen_air", "air")
minetest.register_alias("mapgen_stone", "mcl_core:stone")
minetest.register_alias("mapgen_tree", "mcl_core:tree")
minetest.register_alias("mapgen_leaves", "mcl_core:leaves")
minetest.register_alias("mapgen_jungletree", "mcl_core:jungletree")
minetest.register_alias("mapgen_jungleleaves", "mcl_core:jungleleaves")
minetest.register_alias("mapgen_pine_tree", "mcl_core:sprucetree")
minetest.register_alias("mapgen_pine_needles", "mcl_core:spruceleaves")
minetest.register_alias("mapgen_apple", "mcl_core:leaves")
minetest.register_alias("mapgen_water_source", "mcl_core:water_source")
minetest.register_alias("mapgen_dirt", "mcl_core:dirt")
minetest.register_alias("mapgen_dirt_with_grass", "mcl_core:dirt_with_grass")
minetest.register_alias("mapgen_dirt_with_snow", "mcl_core:dirt_with_snow")
minetest.register_alias("mapgen_sand", "mcl_core:sand")
minetest.register_alias("mapgen_gravel", "mcl_core:gravel")
minetest.register_alias("mapgen_clay", "mcl_core:clay")
minetest.register_alias("mapgen_lava_source", "mcl_core:lava_source")
minetest.register_alias("mapgen_cobble", "mcl_core:cobble")
minetest.register_alias("mapgen_mossycobble", "mcl_core:mossycobble")
minetest.register_alias("mapgen_junglegrass", "mcl_flowers:fern")
minetest.register_alias("mapgen_stone_with_coal", "mcl_core:stone_with_coal")
minetest.register_alias("mapgen_stone_with_iron", "mcl_core:stone_with_iron")
minetest.register_alias("mapgen_desert_sand", "mcl_core:sand")
minetest.register_alias("mapgen_desert_stone", "mcl_core:sandstone")
minetest.register_alias("mapgen_sandstone", "mcl_core:sandstone")
minetest.register_alias("mapgen_river_water_source", "mcl_core:water_source")
minetest.register_alias("mapgen_snow", "mcl_core:snow")
minetest.register_alias("mapgen_snowblock", "mcl_core:snowblock")
minetest.register_alias("mapgen_ice", "mcl_core:ice")
minetest.register_alias("mapgen_stair_cobble", "stairs:stair_cobble")
minetest.register_alias("mapgen_sandstonebrick", "mcl_core:sandstonesmooth")
minetest.register_alias("mapgen_stair_sandstonebrick", "stairs:stair_sandstone")
--
-- Ore generation
--
-- Gravel
minetest.register_ore({
ore_type = "blob",
ore = "mcl_core:gravel",
wherein = {"mcl_core:stone"},
clust_scarcity = 14*14*14,
clust_num_ores = 33,
clust_size = 5,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(111),
})
-- Dirt
minetest.register_ore({
ore_type = "blob",
ore = "mcl_core:dirt",
wherein = {"mcl_core:stone"},
clust_scarcity = 15*15*15,
clust_num_ores = 33,
clust_size = 4,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_vars.mg_overworld_max,
})
-- Diorite, andesite and granite
local specialstones = { "mcl_core:diorite", "mcl_core:andesite", "mcl_core:granite" }
for s=1, #specialstones do
local node = specialstones[s]
minetest.register_ore({
ore_type = "blob",
ore = node,
wherein = {"mcl_core:stone"},
clust_scarcity = 15*15*15,
clust_num_ores = 33,
clust_size = 5,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_vars.mg_overworld_max,
})
minetest.register_ore({
ore_type = "blob",
ore = node,
wherein = {"mcl_core:stone"},
clust_scarcity = 10*10*10,
clust_num_ores = 58,
clust_size = 7,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_vars.mg_overworld_max,
})
end
--
-- Coal
--
-- Common spawn
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_coal",
wherein = "mcl_core:stone",
clust_scarcity = 525*3,
clust_num_ores = 5,
clust_size = 3,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(50),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_coal",
wherein = "mcl_core:stone",
clust_scarcity = 510*3,
clust_num_ores = 8,
clust_size = 3,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(50),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_coal",
wherein = "mcl_core:stone",
clust_scarcity = 500*3,
clust_num_ores = 12,
clust_size = 3,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(50),
})
-- Medium-rare spawn
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_coal",
wherein = "mcl_core:stone",
clust_scarcity = 550*3,
clust_num_ores = 4,
clust_size = 2,
y_min = mcl_util.layer_to_y(51),
y_max = mcl_util.layer_to_y(80),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_coal",
wherein = "mcl_core:stone",
clust_scarcity = 525*3,
clust_num_ores = 6,
clust_size = 3,
y_min = mcl_util.layer_to_y(51),
y_max = mcl_util.layer_to_y(80),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_coal",
wherein = "mcl_core:stone",
clust_scarcity = 500*3,
clust_num_ores = 8,
clust_size = 3,
y_min = mcl_util.layer_to_y(51),
y_max = mcl_util.layer_to_y(80),
})
-- Rare spawn
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_coal",
wherein = "mcl_core:stone",
clust_scarcity = 600*3,
clust_num_ores = 3,
clust_size = 2,
y_min = mcl_util.layer_to_y(81),
y_max = mcl_util.layer_to_y(128),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_coal",
wherein = "mcl_core:stone",
clust_scarcity = 550*3,
clust_num_ores = 4,
clust_size = 3,
y_min = mcl_util.layer_to_y(81),
y_max = mcl_util.layer_to_y(128),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_coal",
wherein = "mcl_core:stone",
clust_scarcity = 500*3,
clust_num_ores = 5,
clust_size = 3,
y_min = mcl_util.layer_to_y(81),
y_max = mcl_util.layer_to_y(128),
})
--
-- Iron
--
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_iron",
wherein = "mcl_core:stone",
clust_scarcity = 830,
clust_num_ores = 5,
clust_size = 3,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(39),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_iron",
wherein = "mcl_core:stone",
clust_scarcity = 1660,
clust_num_ores = 4,
clust_size = 2,
y_min = mcl_util.layer_to_y(40),
y_max = mcl_util.layer_to_y(63),
})
--
-- Gold
--
-- Common spawn
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_gold",
wherein = "mcl_core:stone",
clust_scarcity = 4775,
clust_num_ores = 5,
clust_size = 3,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(30),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_gold",
wherein = "mcl_core:stone",
clust_scarcity = 6560,
clust_num_ores = 7,
clust_size = 3,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(30),
})
-- Rare spawn
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_gold",
wherein = "mcl_core:stone",
clust_scarcity = 13000,
clust_num_ores = 4,
clust_size = 2,
y_min = mcl_util.layer_to_y(31),
y_max = mcl_util.layer_to_y(33),
})
--
-- Diamond
--
-- Common spawn
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_diamond",
wherein = "mcl_core:stone",
clust_scarcity = 10000,
clust_num_ores = 4,
clust_size = 3,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(12),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_diamond",
wherein = "mcl_core:stone",
clust_scarcity = 5000,
clust_num_ores = 2,
clust_size = 2,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(12),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_diamond",
wherein = "mcl_core:stone",
clust_scarcity = 10000,
clust_num_ores = 8,
clust_size = 3,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(12),
})
-- Rare spawn
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_diamond",
wherein = "mcl_core:stone",
clust_scarcity = 20000,
clust_num_ores = 1,
clust_size = 1,
y_min = mcl_util.layer_to_y(13),
y_max = mcl_util.layer_to_y(15),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_diamond",
wherein = "mcl_core:stone",
clust_scarcity = 20000,
clust_num_ores = 2,
clust_size = 2,
y_min = mcl_util.layer_to_y(13),
y_max = mcl_util.layer_to_y(15),
})
--
-- Redstone
--
-- Common spawn
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_redstone",
wherein = "mcl_core:stone",
clust_scarcity = 500,
clust_num_ores = 4,
clust_size = 3,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(13),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_redstone",
wherein = "mcl_core:stone",
clust_scarcity = 800,
clust_num_ores = 7,
clust_size = 4,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(13),
})
-- Rare spawn
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_redstone",
wherein = "mcl_core:stone",
clust_scarcity = 1000,
clust_num_ores = 4,
clust_size = 3,
y_min = mcl_util.layer_to_y(13),
y_max = mcl_util.layer_to_y(15),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_redstone",
wherein = "mcl_core:stone",
clust_scarcity = 1600,
clust_num_ores = 7,
clust_size = 4,
y_min = mcl_util.layer_to_y(13),
y_max = mcl_util.layer_to_y(15),
})
--
-- Emerald
--
-- Common spawn
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_emerald",
wherein = "mcl_core:stone",
clust_scarcity = 14340,
clust_num_ores = 1,
clust_size = 1,
y_min = mcl_vars.mg_overworld_min,
y_max = mcl_util.layer_to_y(29),
})
-- Rare spawn
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_emerald",
wherein = "mcl_core:stone",
clust_scarcity = 21510,
clust_num_ores = 1,
clust_size = 1,
y_min = mcl_util.layer_to_y(30),
y_max = mcl_util.layer_to_y(32),
})
--
-- Lapis Lazuli
--
-- Common spawn (in the center)
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_lapis",
wherein = "mcl_core:stone",
clust_scarcity = 10000,
clust_num_ores = 7,
clust_size = 4,
y_min = mcl_util.layer_to_y(14),
y_max = mcl_util.layer_to_y(16),
})
-- Rare spawn (below center)
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_lapis",
wherein = "mcl_core:stone",
clust_scarcity = 12000,
clust_num_ores = 6,
clust_size = 3,
y_min = mcl_util.layer_to_y(10),
y_max = mcl_util.layer_to_y(13),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_lapis",
wherein = "mcl_core:stone",
clust_scarcity = 14000,
clust_num_ores = 5,
clust_size = 3,
y_min = mcl_util.layer_to_y(6),
y_max = mcl_util.layer_to_y(9),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_lapis",
wherein = "mcl_core:stone",
clust_scarcity = 16000,
clust_num_ores = 4,
clust_size = 3,
y_min = mcl_util.layer_to_y(2),
y_max = mcl_util.layer_to_y(5),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_lapis",
wherein = "mcl_core:stone",
clust_scarcity = 18000,
clust_num_ores = 3,
clust_size = 2,
y_min = mcl_util.layer_to_y(0),
y_max = mcl_util.layer_to_y(2),
})
-- Rare spawn (above center)
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_lapis",
wherein = "mcl_core:stone",
clust_scarcity = 12000,
clust_num_ores = 6,
clust_size = 3,
y_min = mcl_util.layer_to_y(17),
y_max = mcl_util.layer_to_y(20),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_lapis",
wherein = "mcl_core:stone",
clust_scarcity = 14000,
clust_num_ores = 5,
clust_size = 3,
y_min = mcl_util.layer_to_y(21),
y_max = mcl_util.layer_to_y(24),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_lapis",
wherein = "mcl_core:stone",
clust_scarcity = 16000,
clust_num_ores = 4,
clust_size = 3,
y_min = mcl_util.layer_to_y(25),
y_max = mcl_util.layer_to_y(28),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_lapis",
wherein = "mcl_core:stone",
clust_scarcity = 18000,
clust_num_ores = 3,
clust_size = 2,
y_min = mcl_util.layer_to_y(29),
y_max = mcl_util.layer_to_y(32),
})
minetest.register_ore({
ore_type = "scatter",
ore = "mcl_core:stone_with_lapis",
wherein = "mcl_core:stone",
clust_scarcity = 32000,
clust_num_ores = 1,
clust_size = 1,
y_min = mcl_util.layer_to_y(31),
y_max = mcl_util.layer_to_y(32),
})
local function register_mgv6_decorations()
-- Sugar canes
minetest.register_decoration({
deco_type = "simple",
place_on = {"mcl_core:dirt_with_grass"},
sidelen = 16,
noise_params = {
offset = -0.3,
scale = 0.7,
spread = {x = 100, y = 100, z = 100},
seed = 2,
octaves = 3,
persist = 0.7
},
y_min = 1,
y_max = 1,
decoration = "mcl_core:reeds",
height = 2,
height_max = 4,
spawn_by = "mcl_core:water_source",
num_spawn_by = 1,
})
-- Cacti
minetest.register_decoration({
deco_type = "simple",
place_on = {"mcl_core:sand", "mcl_core:redsand"},
sidelen = 16,
noise_params = {
offset = -0.012,
scale = 0.024,
spread = {x = 100, y = 100, z = 100},
seed = 257,
octaves = 3,
persist = 0.6
},
y_min = 4,
y_max = 30,
decoration = "mcl_core:cactus",
height = 1,
height_max = 3,
})
-- Tall grass
minetest.register_decoration({
deco_type = "simple",
place_on = {"mcl_core:dirt_with_grass"},
sidelen = 8,
noise_params = {
offset = 0,
scale = 0.3,
spread = {x = 500, y = 500, z = 500},
seed = 420,
octaves = 2,
persist = 0.6
},
y_min = 1,
y_max = 50,
decoration = "mcl_flowers:tallgrass",
})
-- Add a small amount of tall grass everywhere to avoid areas completely empty devoid of tall grass
minetest.register_decoration({
deco_type = "simple",
place_on = {"mcl_core:dirt_with_grass"},
sidelen = 8,
fill_ratio = 0.001,
y_min = 1,
y_max = 50,
decoration = "mcl_flowers:tallgrass",
})
-- Doubletall grass
minetest.register_decoration({
deco_type = "schematic",
schematic = {
size = { x=1, y=3, z=1 },
data = {
{ name = "air", prob = 0 },
{ name = "mcl_flowers:double_grass", param1=255, },
{ name = "mcl_flowers:double_grass_top", param1=255, },
},
},
replacements = {
["mcl_flowers:tallgrass"] = "mcl_flowers:double_grass"
},
place_on = {"mcl_core:dirt_with_grass"},
sidelen = 8,
noise_params = {
offset = -0.05,
scale = 0.025,
spread = {x = 500, y = 500, z = 500},
seed = 420,
octaves = 2,
persist = 0.63,
},
y_min = 1,
y_max = 40,
flags = "",
})
-- Large ferns
minetest.register_decoration({
deco_type = "schematic",
schematic = {
size = { x=1, y=3, z=1 },
data = {
{ name = "air", prob = 0 },
{ name = "mcl_flowers:double_fern", param1=255, },
{ name = "mcl_flowers:double_fern_top", param1=255, },
},
},
replacements = {
["mcl_flowers:fern"] = "mcl_flowers:double_fern"
},
-- This makes sure large ferns only appear in jungles
spawn_by = { "mcl_core:jungletree", "mcl_flowers:fern" },
num_spawn_by = 1,
place_on = {"mcl_core:dirt_with_grass"},
sidelen = 16,
noise_params = {
offset = 0,
scale = 0.01,
spread = {x = 250, y = 250, z = 250},
seed = 333,
octaves = 2,
persist = 0.66,
},
y_min = 1,
y_max = 30,
flags = "",
})
-- Dead bushes
minetest.register_decoration({
deco_type = "simple",
place_on = {"mcl_core:sand", "mcl_core:redsand", "mcl_core:podzol", "mcl_core:coarse_dirt", "mcl_colorblocks:hardened_clay"},
sidelen = 16,
noise_params = {
offset = 0,
scale = 0.035,
spread = {x = 100, y = 100, z = 100},
seed = 1972,
octaves = 3,
persist = 0.6
},
y_min = 4,
y_max = 50,
decoration = "mcl_core:deadbush",
})
local function register_mgv6_flower(name, seed)
minetest.register_decoration({
deco_type = "simple",
place_on = {"mcl_core:dirt_with_grass"},
sidelen = 16,
noise_params = {
offset = 0,
scale = 0.006,
spread = {x = 100, y = 100, z = 100},
seed = seed,
octaves = 3,
persist = 0.6
},
y_min = 1,
y_max = 30,
decoration = "mcl_flowers:"..name,
})
end
register_mgv6_flower("tulip_red", 436)
register_mgv6_flower("tulip_orange", 536)
register_mgv6_flower("tulip_pink", 636)
register_mgv6_flower("tulip_white", 736)
register_mgv6_flower("azure_bluet", 800)
register_mgv6_flower("dandelion", 8)
register_mgv6_flower("allium", 0)
register_mgv6_flower("blue_orchid", 64500)
register_mgv6_flower("oxeye_daisy", 3490)
register_mgv6_flower("poppy", 9439)
end
minetest.register_on_generated(function(minp, maxp, seed)
if maxp.y >= 2 and minp.y <= 0 then
-- Generate clay
-- Assume X and Z lengths are equal
local divlen = 4
local divs = (maxp.x-minp.x)/divlen+1;
for divx=0+1,divs-1-1 do
for divz=0+1,divs-1-1 do
local cx = minp.x + math.floor((divx+0.5)*divlen)
local cz = minp.z + math.floor((divz+0.5)*divlen)
if minetest.get_node({x=cx,y=1,z=cz}).name == "mcl_core:water_source" and
minetest.get_node({x=cx,y=0,z=cz}).name == "mcl_core:sand" then
local is_shallow = true
local num_water_around = 0
if minetest.get_node({x=cx-divlen*2,y=1,z=cz+0}).name == "mcl_core:water_source" then
num_water_around = num_water_around + 1 end
if minetest.get_node({x=cx+divlen*2,y=1,z=cz+0}).name == "mcl_core:water_source" then
num_water_around = num_water_around + 1 end
if minetest.get_node({x=cx+0,y=1,z=cz-divlen*2}).name == "mcl_core:water_source" then
num_water_around = num_water_around + 1 end
if minetest.get_node({x=cx+0,y=1,z=cz+divlen*2}).name == "mcl_core:water_source" then
num_water_around = num_water_around + 1 end
if num_water_around >= 2 then
is_shallow = false
end
if is_shallow then
for x1=-divlen,divlen do
for z1=-divlen,divlen do
if minetest.get_node({x=cx+x1,y=0,z=cz+z1}).name == "mcl_core:sand" or minetest.get_node({x=cx+x1,y=0,z=cz+z1}).name == "mcl_core:sandstone" then
minetest.set_node({x=cx+x1,y=0,z=cz+z1}, {name="mcl_core:clay"})
end
end
end
end
end
end
end
-- Generate reeds
local perlin1 = minetest.get_perlin(354, 3, 0.7, 100)
-- Assume X and Z lengths are equal
local divlen = 8
local divs = (maxp.x-minp.x)/divlen+1;
for divx=0,divs-1 do
for divz=0,divs-1 do
local x0 = minp.x + math.floor((divx+0)*divlen)
local z0 = minp.z + math.floor((divz+0)*divlen)
local x1 = minp.x + math.floor((divx+1)*divlen)
local z1 = minp.z + math.floor((divz+1)*divlen)
-- Determine reeds amount from perlin noise
local reeds_amount = math.floor(perlin1:get2d({x=x0, y=z0}) * 45 - 20)
-- Find random positions for reeds based on this random
local pr = PseudoRandom(seed+1)
for i=0,reeds_amount do
local x = pr:next(x0, x1)
local z = pr:next(z0, z1)
local p = {x=x,y=1,z=z}
if minetest.get_node(p).name == "mcl_core:sand" then
if math.random(0,1000) == 1 then -- 0,12000
-- Spawn sand temple
random_struct.call_struct(p,2)
end
end
end
end
end
-- Generate grass
local perlin1 = minetest.get_perlin(329, 3, 0.6, 100)
-- Assume X and Z lengths are equal
local divlen = 5
local divs = (maxp.x-minp.x)/divlen+1;
for divx=0,divs-1 do
for divz=0,divs-1 do
local x0 = minp.x + math.floor((divx+0)*divlen)
local z0 = minp.z + math.floor((divz+0)*divlen)
local x1 = minp.x + math.floor((divx+1)*divlen)
local z1 = minp.z + math.floor((divz+1)*divlen)
-- Determine grass amount from perlin noise
local grass_amount = math.floor(perlin1:get2d({x=x0, y=z0}) * 9)
-- Find random positions for grass based on this random
local pr = PseudoRandom(seed+1)
for i=0,grass_amount do
local x = pr:next(x0, x1)
local z = pr:next(z0, z1)
-- Find ground level (0...15)
local ground_y = nil
for y=30,0,-1 do
if minetest.get_node({x=x,y=y,z=z}).name ~= "air" then
ground_y = y
break
end
end
if ground_y then
local p = {x=x,y=ground_y+1,z=z}
local nn = minetest.get_node(p).name
-- Check if the node can be replaced
if minetest.registered_nodes[nn] and
minetest.registered_nodes[nn].buildable_to then
nn = minetest.get_node({x=x,y=ground_y,z=z}).name
if nn == "mcl_core:dirt_with_grass" then
if math.random(0,12000) == 1 then
-- Spawn town
-- TODO: Re-enable random_struct
-- Towns often float around in air which doesn't look nice
--random_struct.call_struct(p,1)
end
end
end
end
end
end
end
end
end)
-- Generate bedrock layer or layers
local BEDROCK_MIN = mcl_vars.mg_bedrock_overworld_min
local BEDROCK_MAX = mcl_vars.mg_bedrock_overworld_max
-- Below the bedrock, generate air/void
minetest.register_on_generated(function(minp, maxp)
if minp.y <= BEDROCK_MAX then
local vm, emin, emax = minetest.get_mapgen_object("voxelmanip")
local data = vm:get_data()
local area = VoxelArea:new({MinEdge=emin, MaxEdge=emax})
local c_bedrock = minetest.get_content_id("mcl_core:bedrock")
local c_void = minetest.get_content_id("mcl_core:void")
for y = minp.y, math.min(maxp.y, BEDROCK_MAX) do
for x = minp.x, maxp.x do
for z = minp.z, maxp.z do
local p_pos = area:index(x, y, z)
local setdata = nil
if mcl_vars.mg_bedrock_is_rough then
-- Bedrock layers with increasing levels of roughness, until a perfecly flat bedrock later at the bottom layer
-- This code assumes a bedrock height of 5 layers.
if y == BEDROCK_MAX then
-- 50% bedrock chance
if math.random(1,2) == 1 then setdata = c_bedrock end
elseif y == BEDROCK_MAX -1 then
-- 66.666...%
if math.random(1,3) <= 2 then setdata = c_bedrock end
elseif y == BEDROCK_MAX -2 then
-- 75%
if math.random(1,4) <= 3 then setdata = c_bedrock end
elseif y == BEDROCK_MAX -3 then
-- 90%
if math.random(1,10) <= 9 then setdata = c_bedrock end
elseif y == BEDROCK_MAX -4 then
-- 100%
setdata = c_bedrock
elseif y < BEDROCK_MIN then
setdata = c_void
end
else
-- Perfectly flat bedrock layer(s)
if y >= BEDROCK_MIN and y <= BEDROCK_MAX then
setdata = c_bedrock
elseif y < BEDROCK_MIN then
setdata = c_void
end
end
if setdata then
data[p_pos] = setdata
end
end
end
end
vm:set_data(data)
vm:calc_lighting()
vm:update_liquids()
vm:write_to_map()
end
end)
-- Apply mapgen-specific mapgen code
local mg_name = minetest.get_mapgen_setting("mg_name")
if mg_name == "v6" then
register_mgv6_decorations()
end
if mg_name == "flat" then
minetest.set_mapgen_setting("mg_flags", "nocaves,nodungeons,nodecorations")
else
minetest.set_mapgen_setting("mg_flags", "nodungeons")
end
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