--- minetest/default/mapgen.lua
-
--
-- Aliases for map generator outputs
--
-minetest.register_alias("mapgen_air", "air")
+
minetest.register_alias("mapgen_stone", "default:stone")
-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_water_source", "default:water_source")
minetest.register_alias("mapgen_dirt", "default:dirt")
+minetest.register_alias("mapgen_dirt_with_grass", "default:dirt_with_grass")
minetest.register_alias("mapgen_sand", "default:sand")
-minetest.register_alias("mapgen_gravel", "default:gravel")
-minetest.register_alias("mapgen_clay", "default:clay")
+minetest.register_alias("mapgen_water_source", "default:water_source")
+minetest.register_alias("mapgen_river_water_source", "default:river_water_source")
minetest.register_alias("mapgen_lava_source", "default:lava_source")
+minetest.register_alias("mapgen_gravel", "default:gravel")
+minetest.register_alias("mapgen_desert_stone", "default:desert_stone")
+minetest.register_alias("mapgen_desert_sand", "default:desert_sand")
+minetest.register_alias("mapgen_dirt_with_snow", "default:dirt_with_snow")
+minetest.register_alias("mapgen_snowblock", "default:snowblock")
+minetest.register_alias("mapgen_snow", "default:snow")
+minetest.register_alias("mapgen_ice", "default:ice")
+minetest.register_alias("mapgen_sandstone", "default:sandstone")
+
+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_needles", "default:pine_needles")
+
minetest.register_alias("mapgen_cobble", "default:cobble")
+minetest.register_alias("mapgen_stair_cobble", "stairs:stair_cobble")
minetest.register_alias("mapgen_mossycobble", "default:mossycobble")
-minetest.register_alias("mapgen_dirt_with_grass", "default:dirt_with_grass")
-minetest.register_alias("mapgen_junglegrass", "default:junglegrass")
-minetest.register_alias("mapgen_stone_with_coal", "default:stone_with_coal")
-minetest.register_alias("mapgen_stone_with_iron", "default:stone_with_iron")
-minetest.register_alias("mapgen_mese", "default:mese")
-minetest.register_alias("mapgen_desert_sand", "default:desert_sand")
-minetest.register_alias("mapgen_desert_stone", "default:desert_stone")
+minetest.register_alias("mapgen_sandstonebrick", "default:sandstonebrick")
+minetest.register_alias("mapgen_stair_sandstonebrick", "stairs:stair_sandstonebrick")
+
+
+--
+-- Register ores
+--
+
+
+-- Blob ore first to avoid other ores inside blobs
+
+function default.register_ores()
+ minetest.register_ore({
+ ore_type = "blob",
+ ore = "default:clay",
+ wherein = {"default:sand"},
+ clust_scarcity = 24*24*24,
+ clust_size = 7,
+ y_min = -15,
+ y_max = 0,
+ noise_threshhold = 0,
+ noise_params = {
+ offset=0.35,
+ scale=0.2,
+ spread={x=5, y=5, z=5},
+ seed=-316,
+ octaves=1,
+ persist=0.5
+ },
+ })
+
+ minetest.register_ore({
+ ore_type = "blob",
+ ore = "default:sand",
+ wherein = {"default:stone"},
+ clust_scarcity = 24*24*24,
+ clust_size = 7,
+ y_min = -63,
+ y_max = 4,
+ noise_threshhold = 0,
+ noise_params = {
+ offset=0.35,
+ scale=0.2,
+ spread={x=5, y=5, z=5},
+ seed=2316,
+ octaves=1,
+ persist=0.5
+ },
+ })
+
+ minetest.register_ore({
+ ore_type = "blob",
+ ore = "default:dirt",
+ wherein = {"default:stone"},
+ clust_scarcity = 24*24*24,
+ clust_size = 7,
+ y_min = -63,
+ y_max = 31000,
+ noise_threshhold = 0,
+ noise_params = {
+ offset=0.35,
+ scale=0.2,
+ spread={x=5, y=5, z=5},
+ seed=17676,
+ octaves=1,
+ persist=0.5
+ },
+ })
+
+ minetest.register_ore({
+ ore_type = "blob",
+ ore = "default:gravel",
+ wherein = {"default:stone"},
+ clust_scarcity = 24*24*24,
+ clust_size = 7,
+ y_min = -31000,
+ y_max = 31000,
+ noise_threshhold = 0,
+ noise_params = {
+ offset=0.35,
+ scale=0.2,
+ spread={x=5, y=5, z=5},
+ seed=766,
+ octaves=1,
+ persist=0.5
+ },
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_coal",
+ wherein = "default:stone",
+ clust_scarcity = 8*8*8,
+ clust_num_ores = 8,
+ clust_size = 3,
+ y_min = -31000,
+ y_max = 64,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_coal",
+ wherein = "default:stone",
+ clust_scarcity = 24*24*24,
+ clust_num_ores = 27,
+ clust_size = 6,
+ y_min = -31000,
+ y_max = 0,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_iron",
+ wherein = "default:stone",
+ clust_scarcity = 12*12*12,
+ clust_num_ores = 3,
+ clust_size = 2,
+ y_min = -15,
+ y_max = 2,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_iron",
+ wherein = "default:stone",
+ clust_scarcity = 9*9*9,
+ clust_num_ores = 5,
+ clust_size = 3,
+ y_min = -63,
+ y_max = -16,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_iron",
+ wherein = "default:stone",
+ clust_scarcity = 7*7*7,
+ clust_num_ores = 5,
+ clust_size = 3,
+ y_min = -31000,
+ y_max = -64,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_iron",
+ wherein = "default:stone",
+ clust_scarcity = 24*24*24,
+ clust_num_ores = 27,
+ clust_size = 6,
+ y_min = -31000,
+ y_max = -64,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_mese",
+ wherein = "default:stone",
+ clust_scarcity = 18*18*18,
+ clust_num_ores = 3,
+ clust_size = 2,
+ y_min = -255,
+ y_max = -64,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_mese",
+ wherein = "default:stone",
+ clust_scarcity = 14*14*14,
+ clust_num_ores = 5,
+ clust_size = 3,
+ y_min = -31000,
+ y_max = -256,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:mese",
+ wherein = "default:stone",
+ clust_scarcity = 36*36*36,
+ clust_num_ores = 3,
+ clust_size = 2,
+ y_min = -31000,
+ y_max = -1024,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_gold",
+ wherein = "default:stone",
+ clust_scarcity = 15*15*15,
+ clust_num_ores = 3,
+ clust_size = 2,
+ y_min = -255,
+ y_max = -64,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_gold",
+ wherein = "default:stone",
+ clust_scarcity = 13*13*13,
+ clust_num_ores = 5,
+ clust_size = 3,
+ y_min = -31000,
+ y_max = -256,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_diamond",
+ wherein = "default:stone",
+ clust_scarcity = 17*17*17,
+ clust_num_ores = 4,
+ clust_size = 3,
+ y_min = -255,
+ y_max = -128,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_diamond",
+ wherein = "default:stone",
+ clust_scarcity = 15*15*15,
+ clust_num_ores = 4,
+ clust_size = 3,
+ y_min = -31000,
+ y_max = -256,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_copper",
+ wherein = "default:stone",
+ clust_scarcity = 12*12*12,
+ clust_num_ores = 4,
+ clust_size = 3,
+ y_min = -63,
+ y_max = -16,
+ })
+
+ minetest.register_ore({
+ ore_type = "scatter",
+ ore = "default:stone_with_copper",
+ wherein = "default:stone",
+ clust_scarcity = 9*9*9,
+ clust_num_ores = 5,
+ clust_size = 3,
+ y_min = -31000,
+ y_max = -64,
+ })
+end
+
+
+--
+-- Register biomes
+--
+
+
+function default.register_biomes()
+ minetest.clear_registered_biomes()
+
+ minetest.register_biome({
+ name = "default:grassland",
+ --node_dust = "",
+ node_top = "default:dirt_with_grass",
+ depth_top = 1,
+ node_filler = "default:dirt",
+ depth_filler = 1,
+ --node_stone = "",
+ --node_water_top = "",
+ --depth_water_top = ,
+ --node_water = "",
+ y_min = 5,
+ y_max = 31000,
+ heat_point = 50,
+ humidity_point = 50,
+ })
+
+ minetest.register_biome({
+ name = "default:grassland_ocean",
+ --node_dust = "",
+ node_top = "default:sand",
+ depth_top = 1,
+ node_filler = "default:sand",
+ depth_filler = 2,
+ --node_stone = "",
+ --node_water_top = "",
+ --depth_water_top = ,
+ --node_water = "",
+ y_min = -31000,
+ y_max = 4,
+ heat_point = 50,
+ humidity_point = 50,
+ })
+end
+
--
--- Ore generation
+-- Register mgv6 decorations
--
-local function generate_ore(name, wherein, minp, maxp, seed, chunks_per_volume, ore_per_chunk, height_min, height_max)
+
+function default.register_mgv6_decorations()
+
+ -- Papyrus
+
+ minetest.register_decoration({
+ deco_type = "simple",
+ place_on = {"default:dirt_with_grass"},
+ sidelen = 8,
+ noise_params = {
+ offset = -0.3,
+ scale = 0.7,
+ spread = {x=100, y=100, z=100},
+ seed = 354,
+ octaves = 3,
+ persist = 0.7
+ },
+ y_min = 1,
+ y_max = 1,
+ decoration = "default:papyrus",
+ height = 2,
+ height_max = 4,
+ spawn_by = "default:water_source",
+ num_spawn_by = 1,
+ })
+
+ -- Cacti
+
+ minetest.register_decoration({
+ deco_type = "simple",
+ place_on = {"default:desert_sand"},
+ sidelen = 16,
+ noise_params = {
+ offset = -0.012,
+ scale = 0.024,
+ spread = {x=100, y=100, z=100},
+ seed = 230,
+ octaves = 3,
+ persist = 0.6
+ },
+ y_min = 1,
+ y_max = 30,
+ decoration = "default:cactus",
+ height = 3,
+ height_max = 4,
+ })
+
+ -- Grasses
+
+ for length = 1, 5 do
+ minetest.register_decoration({
+ deco_type = "simple",
+ place_on = {"default:dirt_with_grass"},
+ sidelen = 16,
+ noise_params = {
+ offset = 0,
+ scale = 0.007,
+ spread = {x=100, y=100, z=100},
+ seed = 329,
+ octaves = 3,
+ persist = 0.6
+ },
+ y_min = 1,
+ y_max = 30,
+ decoration = "default:grass_"..length,
+ })
+ end
+
+ -- Dry shrubs
+
+ minetest.register_decoration({
+ deco_type = "simple",
+ place_on = {"default:desert_sand", "default:dirt_with_snow"},
+ sidelen = 16,
+ noise_params = {
+ offset = 0,
+ scale = 0.035,
+ spread = {x=100, y=100, z=100},
+ seed = 329,
+ octaves = 3,
+ persist = 0.6
+ },
+ y_min = 1,
+ y_max = 30,
+ decoration = "default:dry_shrub",
+ })
+end
+
+
+--
+-- Register decorations
+--
+
+
+function default.register_decorations()
+
+ -- Flowers
+
+ 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 = 436,
+ octaves = 3,
+ persist = 0.6
+ },
+ biomes = {"default:grassland"},
+ y_min = -31000,
+ y_max = 31000,
+ decoration = "flowers:rose",
+ })
+
+ 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 = 19822,
+ octaves = 3,
+ persist = 0.6
+ },
+ biomes = {"default:grassland"},
+ y_min = 33,
+ y_max = 31000,
+ decoration = "flowers:tulip",
+ })
+
+ 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 = 1220999,
+ octaves = 3,
+ persist = 0.6
+ },
+ biomes = {"default:grassland"},
+ y_min = -31000,
+ y_max = 31000,
+ decoration = "flowers:dandelion_yellow",
+ })
+
+ 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,
+ y_max = 31000,
+ decoration = "flowers:geranium",
+ })
+
+ 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 = 1133,
+ octaves = 3,
+ persist = 0.6
+ },
+ biomes = {"default:grassland"},
+ y_min = -31000,
+ y_max = 31000,
+ decoration = "flowers:viola",
+ })
+
+ 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 = 73133,
+ octaves = 3,
+ persist = 0.6
+ },
+ biomes = {"default:grassland"},
+ y_min = -31000,
+ y_max = 31000,
+ decoration = "flowers:dandelion_white",
+ })
+
+ -- Grasses
+
+ minetest.register_decoration({
+ deco_type = "simple",
+ place_on = {"default:dirt_with_grass"},
+ sidelen = 16,
+ noise_params = {
+ offset = 0.04,
+ scale = 0.04,
+ spread = {x=200, y=200, z=200},
+ seed = 66440,
+ octaves = 3,
+ persist = 0.6
+ },
+ biomes = {"default:grassland"},
+ y_min = -31000,
+ y_max = 31000,
+ decoration = "default:grass_1",
+ })
+
+ minetest.register_decoration({
+ deco_type = "simple",
+ place_on = {"default:dirt_with_grass"},
+ sidelen = 16,
+ noise_params = {
+ offset = 0.02,
+ scale = 0.06,
+ spread = {x=200, y=200, z=200},
+ seed = 66440,
+ octaves = 3,
+ persist = 0.6
+ },
+ biomes = {"default:grassland"},
+ y_min = -31000,
+ y_max = 31000,
+ decoration = "default:grass_2",
+ })
+
+ minetest.register_decoration({
+ deco_type = "simple",
+ place_on = {"default:dirt_with_grass"},
+ sidelen = 16,
+ noise_params = {
+ offset = 0,
+ scale = 0.08,
+ spread = {x=200, y=200, z=200},
+ seed = 66440,
+ octaves = 3,
+ persist = 0.6
+ },
+ biomes = {"default:grassland"},
+ y_min = -31000,
+ y_max = 31000,
+ decoration = "default:grass_3",
+ })
+
+ 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,
+ y_max = 31000,
+ decoration = "default:grass_4",
+ })
+
+ minetest.register_decoration({
+ deco_type = "simple",
+ place_on = {"default:dirt_with_grass"},
+ sidelen = 16,
+ noise_params = {
+ offset = -0.04,
+ scale = 0.12,
+ spread = {x=200, y=200, z=200},
+ seed = 66440,
+ octaves = 3,
+ persist = 0.6
+ },
+ biomes = {"default:grassland"},
+ y_min = -31000,
+ y_max = 31000,
+ decoration = "default:grass_5",
+ })
+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_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
+ tailvec.z = 1
+ elseif facedir == 1 then
+ tailvec.x = 1
+ elseif facedir == 2 then
+ tailvec.z = -1
+ elseif facedir == 3 then
+ tailvec.x = -1
+ else
+ --print("default.make_nyancat(): Invalid facedir: "+dump(facedir))
+ facedir = 0
+ tailvec.z = 1
+ end
+ local p = {x=pos.x, y=pos.y, z=pos.z}
+ minetest.set_node(p, {name="default:nyancat", param2=facedir})
+ for i=1,length do
+ p.x = p.x + tailvec.x
+ p.z = p.z + tailvec.z
+ minetest.set_node(p, {name="default:nyancat_rainbow", param2=facedir})
+ end
+end
+
+
+function default.generate_nyancats(minp, maxp, seed)
+ local height_min = -31000
+ local height_max = -32
if maxp.y < height_min or minp.y > height_max then
return
end
local y_min = math.max(minp.y, height_min)
local y_max = math.min(maxp.y, height_max)
local volume = (maxp.x-minp.x+1)*(y_max-y_min+1)*(maxp.z-minp.z+1)
+ local pr = PseudoRandom(seed + 9324342)
+ local max_num_nyancats = math.floor(volume / (16*16*16))
+ for i=1,max_num_nyancats do
+ if pr:next(0, 1000) == 0 then
+ local x0 = pr:next(minp.x, maxp.x)
+ local y0 = pr:next(minp.y, maxp.y)
+ local z0 = pr:next(minp.z, maxp.z)
+ local p0 = {x=x0, y=y0, z=z0}
+ default.make_nyancat(p0, pr:next(0,3), pr:next(3,15))
+ end
+ end
+end
+
+
+minetest.register_on_generated(default.generate_nyancats)
+
+
+--
+-- Deprecated ore generation code
+--
+
+
+function default.generate_ore(name, wherein, minp, maxp, seed,
+ chunks_per_volume, chunk_size, ore_per_chunk, height_min, height_max)
+ minetest.log('action', "WARNING: default.generate_ore is deprecated")
+
+ if maxp.y < height_min or minp.y > height_max then
+ return
+ end
+ local y_min = math.max(minp.y, height_min)
+ local y_max = math.min(maxp.y, height_max)
+ if chunk_size >= y_max - y_min + 1 then
+ return
+ end
+ local volume = (maxp.x-minp.x+1)*(y_max-y_min+1)*(maxp.z-minp.z+1)
local pr = PseudoRandom(seed)
local num_chunks = math.floor(chunks_per_volume * volume)
- local chunk_size = 3
- if ore_per_chunk <= 4 then
- chunk_size = 2
- end
local inverse_chance = math.floor(chunk_size*chunk_size*chunk_size / ore_per_chunk)
--print("generate_ore num_chunks: "..dump(num_chunks))
for i=1,num_chunks do
local y2 = y0+y1
local z2 = z0+z1
local p2 = {x=x2, y=y2, z=z2}
- if minetest.env:get_node(p2).name == wherein then
- minetest.env:set_node(p2, {name=name})
+ if minetest.get_node(p2).name == wherein then
+ minetest.set_node(p2, {name=name})
end
end
end
--print("generate_ore done")
end
-function default.make_papyrus(pos, size)
- for y=0,size-1 do
- local p = {x=pos.x, y=pos.y+y, z=pos.z}
- minetest.env:set_node(p, {name="default:papyrus"})
- end
-end
-
-function default.make_cactus(pos, size)
- for y=0,size-1 do
- local p = {x=pos.x, y=pos.y+y, z=pos.z}
- minetest.env:set_node(p, {name="default:cactus"})
- end
-end
-
-minetest.register_on_generated(function(minp, maxp, seed)
- generate_ore("default:stone_with_coal", "default:stone", minp, maxp, seed, 1/8/8/8, 5, -31000, 64)
- generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+1, 1/16/16/16, 5, -5, 7)
- generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+2, 1/12/12/12, 5, -16, -5)
- generate_ore("default:stone_with_iron", "default:stone", minp, maxp, seed+3, 1/9/9/9, 5, -31000, -17)
- 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.env:get_node({x=cx,y=1,z=cz}).name == "default:water_source" and
- minetest.env:get_node({x=cx,y=0,z=cz}).name == "default:sand" then
- local is_shallow = true
- local num_water_around = 0
- if minetest.env:get_node({x=cx-divlen*2,y=1,z=cz+0}).name == "default:water_source" then
- num_water_around = num_water_around + 1 end
- if minetest.env:get_node({x=cx+divlen*2,y=1,z=cz+0}).name == "default:water_source" then
- num_water_around = num_water_around + 1 end
- if minetest.env:get_node({x=cx+0,y=1,z=cz-divlen*2}).name == "default:water_source" then
- num_water_around = num_water_around + 1 end
- if minetest.env:get_node({x=cx+0,y=1,z=cz+divlen*2}).name == "default: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.env:get_node({x=cx+x1,y=0,z=cz+z1}).name == "default:sand" then
- minetest.env:set_node({x=cx+x1,y=0,z=cz+z1}, {name="default:clay"})
- end
- end
- end
- end
- end
- end
- end
- -- Generate papyrus
- local perlin1 = minetest.env: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 papyrus amount from perlin noise
- local papyrus_amount = math.floor(perlin1:get2d({x=x0, y=z0}) * 45 - 20)
- -- Find random positions for papyrus based on this random
- local pr = PseudoRandom(seed+1)
- for i=0,papyrus_amount do
- local x = pr:next(x0, x1)
- local z = pr:next(z0, z1)
- if minetest.env:get_node({x=x,y=1,z=z}).name == "default:dirt_with_grass" and
- minetest.env:find_node_near({x=x,y=1,z=z}, 1, "default:water_source") then
- default.make_papyrus({x=x,y=2,z=z}, pr:next(2, 4))
- end
- end
- end
- end
- -- Generate cactuses
- local perlin1 = minetest.env:get_perlin(230, 3, 0.6, 100)
- -- Assume X and Z lengths are equal
- local divlen = 16
- 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 cactus amount from perlin noise
- local cactus_amount = math.floor(perlin1:get2d({x=x0, y=z0}) * 6 - 3)
- -- Find random positions for cactus based on this random
- local pr = PseudoRandom(seed+1)
- for i=0,cactus_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.env:get_node({x=x,y=y,z=z}).name ~= "air" then
- ground_y = y
- break
- end
- end
- -- If desert sand, make cactus
- if ground_y and minetest.env:get_node({x=x,y=ground_y,z=z}).name == "default:desert_sand" then
- default.make_cactus({x=x,y=ground_y+1,z=z}, pr:next(3, 4))
- end
- end
- end
- end
- -- Generate dry shrubs
- local perlin1 = minetest.env:get_perlin(329, 3, 0.6, 100)
- -- Assume X and Z lengths are equal
- local divlen = 16
- 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 cactus amount from perlin noise
- local cactus_amount = math.floor(perlin1:get2d({x=x0, y=z0}) * 5 + 2)
- -- Find random positions for cactus based on this random
- local pr = PseudoRandom(seed+1)
- for i=0,cactus_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.env:get_node({x=x,y=y,z=z}).name ~= "air" then
- ground_y = y
- break
- end
- end
- -- If desert sand, make cactus
- if ground_y and minetest.env:get_node({x=x,y=ground_y,z=z}).name == "default:desert_sand" then
- minetest.env:set_node({x=x,y=ground_y+1,z=z}, {name="default:dry_shrub"})
- end
- end
- end
- end
- end
-end)
-
projects / oweals / minetest_game.git / blobdiff