forked from VoxeLibre/VoxeLibre
392 lines
15 KiB
Lua
392 lines
15 KiB
Lua
mcl_mapgen_core = {}
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local registered_generators = {}
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local lvm, nodes, param2 = 0, 0, 0
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local lvm_used = false
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local lvm_buffer = {}
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local modname = minetest.get_current_modname()
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local modpath = minetest.get_modpath(modname)
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--
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-- Aliases for map generator outputs
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--
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minetest.register_alias("mapgen_air", "air")
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minetest.register_alias("mapgen_stone", "mcl_core:stone")
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minetest.register_alias("mapgen_tree", "mcl_core:tree")
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minetest.register_alias("mapgen_leaves", "mcl_core:leaves")
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minetest.register_alias("mapgen_jungletree", "mcl_core:jungletree")
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minetest.register_alias("mapgen_jungleleaves", "mcl_core:jungleleaves")
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minetest.register_alias("mapgen_pine_tree", "mcl_core:sprucetree")
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minetest.register_alias("mapgen_pine_needles", "mcl_core:spruceleaves")
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minetest.register_alias("mapgen_apple", "mcl_core:leaves")
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minetest.register_alias("mapgen_water_source", "mcl_core:water_source")
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minetest.register_alias("mapgen_dirt", "mcl_core:dirt")
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minetest.register_alias("mapgen_dirt_with_grass", "mcl_core:dirt_with_grass")
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minetest.register_alias("mapgen_dirt_with_snow", "mcl_core:dirt_with_grass_snow")
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minetest.register_alias("mapgen_sand", "mcl_core:sand")
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minetest.register_alias("mapgen_gravel", "mcl_core:gravel")
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minetest.register_alias("mapgen_clay", "mcl_core:clay")
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minetest.register_alias("mapgen_lava_source", "air") -- Built-in lava generator is too unpredictable, we generate lava on our own
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minetest.register_alias("mapgen_cobble", "mcl_core:cobble")
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minetest.register_alias("mapgen_mossycobble", "mcl_core:mossycobble")
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minetest.register_alias("mapgen_junglegrass", "mcl_flowers:fern")
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minetest.register_alias("mapgen_stone_with_coal", "mcl_core:stone_with_coal")
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minetest.register_alias("mapgen_stone_with_iron", "mcl_core:stone_with_iron")
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minetest.register_alias("mapgen_desert_sand", "mcl_core:sand")
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minetest.register_alias("mapgen_desert_stone", "mcl_core:sandstone")
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minetest.register_alias("mapgen_sandstone", "mcl_core:sandstone")
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if minetest.get_modpath("mclx_core") then
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minetest.register_alias("mapgen_river_water_source", "mclx_core:river_water_source")
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else
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minetest.register_alias("mapgen_river_water_source", "mcl_core:water_source")
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end
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minetest.register_alias("mapgen_snow", "mcl_core:snow")
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minetest.register_alias("mapgen_snowblock", "mcl_core:snowblock")
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minetest.register_alias("mapgen_ice", "mcl_core:ice")
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minetest.register_alias("mapgen_stair_cobble", "mcl_stairs:stair_cobble")
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minetest.register_alias("mapgen_sandstonebrick", "mcl_core:sandstonesmooth")
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minetest.register_alias("mapgen_stair_sandstonebrick", "mcl_stairs:stair_sandstone")
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minetest.register_alias("mapgen_stair_sandstone_block", "mcl_stairs:stair_sandstone")
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minetest.register_alias("mapgen_stair_desert_stone", "mcl_stairs:stair_sandstone")
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dofile(modpath.."/api.lua")
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dofile(modpath.."/ores.lua")
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local mg_name = minetest.get_mapgen_setting("mg_name")
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local superflat = mg_name == "flat" and minetest.get_mapgen_setting("mcl_superflat_classic") == "true"
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-- Content IDs
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local c_bedrock = minetest.get_content_id("mcl_core:bedrock")
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local c_obsidian = minetest.get_content_id("mcl_core:obsidian")
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local c_stone = minetest.get_content_id("mcl_core:stone")
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local c_dirt = minetest.get_content_id("mcl_core:dirt")
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local c_dirt_with_grass = minetest.get_content_id("mcl_core:dirt_with_grass")
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local c_dirt_with_grass_snow = minetest.get_content_id("mcl_core:dirt_with_grass_snow")
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local c_reeds = minetest.get_content_id("mcl_core:reeds")
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local c_sand = minetest.get_content_id("mcl_core:sand")
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--local c_sandstone = minetest.get_content_id("mcl_core:sandstone")
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local c_void = minetest.get_content_id("mcl_core:void")
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local c_lava = minetest.get_content_id("mcl_core:lava_source")
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local c_water = minetest.get_content_id("mcl_core:water_source")
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local c_soul_sand = minetest.get_content_id("mcl_nether:soul_sand")
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local c_netherrack = minetest.get_content_id("mcl_nether:netherrack")
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local c_nether_lava = minetest.get_content_id("mcl_nether:nether_lava_source")
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--local c_end_stone = minetest.get_content_id("mcl_end:end_stone")
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local c_realm_barrier = minetest.get_content_id("mcl_core:realm_barrier")
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local c_top_snow = minetest.get_content_id("mcl_core:snow")
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local c_snow_block = minetest.get_content_id("mcl_core:snowblock")
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local c_clay = minetest.get_content_id("mcl_core:clay")
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local c_leaves = minetest.get_content_id("mcl_core:leaves")
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local c_jungleleaves = minetest.get_content_id("mcl_core:jungleleaves")
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--local c_jungletree = minetest.get_content_id("mcl_core:jungletree")
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local c_cocoa_1 = minetest.get_content_id("mcl_cocoas:cocoa_1")
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local c_cocoa_2 = minetest.get_content_id("mcl_cocoas:cocoa_2")
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local c_cocoa_3 = minetest.get_content_id("mcl_cocoas:cocoa_3")
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local c_vine = minetest.get_content_id("mcl_core:vine")
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local c_air = minetest.CONTENT_AIR
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local mg_flags = minetest.settings:get_flags("mg_flags")
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-- Inform other mods of dungeon setting for MCL2-style dungeons
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mcl_vars.mg_dungeons = mg_flags.dungeons and not superflat
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-- Disable builtin dungeons, we provide our own dungeons
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mg_flags.dungeons = false
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if superflat then
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-- Enforce superflat-like mapgen: no caves, decor, lakes and hills
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mg_flags.caves = false
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mg_flags.decorations = false
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minetest.set_mapgen_setting("mgflat_spflags", "nolakes,nohills", true)
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end
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local mg_flags_str = ""
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for k,v in pairs(mg_flags) do
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if v == false then
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k = "no" .. k
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end
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mg_flags_str = mg_flags_str .. k .. ","
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end
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if string.len(mg_flags_str) > 0 then
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mg_flags_str = string.sub(mg_flags_str, 1, string.len(mg_flags_str)-1)
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end
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minetest.set_mapgen_setting("mg_flags", mg_flags_str, true)
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local function between(x, y, z) -- x is between y and z (inclusive)
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return y <= x and x <= z
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end
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local function in_cube(tpos,wpos1,wpos2)
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local xmax=wpos2.x
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local xmin=wpos1.x
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local ymax=wpos2.y
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local ymin=wpos1.y
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local zmax=wpos2.z
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local zmin=wpos1.z
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if wpos1.x > wpos2.x then
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xmax=wpos1.x
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xmin=wpos2.x
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end
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if wpos1.y > wpos2.y then
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ymax=wpos1.y
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ymin=wpos2.y
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end
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if wpos1.z > wpos2.z then
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zmax=wpos1.z
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zmin=wpos2.z
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end
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if between(tpos.x,xmin,xmax) and between(tpos.y,ymin,ymax) and between(tpos.z,zmin,zmax) then
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return true
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end
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return false
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end
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-- Helper function for converting a MC probability to MT, with
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-- regards to MapBlocks.
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-- Some MC generated structures are generated on per-chunk
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-- probability.
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-- The MC probability is 1/x per Minecraft chunk (16×16).
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-- x: The MC probability is 1/x.
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-- minp, maxp: MapBlock limits
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-- returns: Probability (1/return_value) for a single MT mapblock
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local function minecraft_chunk_probability(x, minp, maxp)
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-- 256 is the MC chunk height
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return x * (((maxp.x-minp.x+1)*(maxp.z-minp.z+1)) / 256)
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end
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-- Takes x and z coordinates and minp and maxp of a generated chunk
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-- (in on_generated callback) and returns a biomemap index)
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-- Inverse function of biomemap_to_xz
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local function xz_to_biomemap_index(x, z, minp, maxp)
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local xwidth = maxp.x - minp.x + 1
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local zwidth = maxp.z - minp.z + 1
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local minix = x % xwidth
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local miniz = z % zwidth
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return (minix + miniz * zwidth) + 1
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end
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-- Generate basic layer-based nodes: void, bedrock, realm barrier, lava seas, etc.
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-- Also perform some basic node replacements.
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local bedrock_check
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if mcl_vars.mg_bedrock_is_rough then
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function bedrock_check(pos, _, pr)
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local y = pos.y
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-- Bedrock layers with increasing levels of roughness, until a perfecly flat bedrock later at the bottom layer
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-- This code assumes a bedrock height of 5 layers.
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local diff = mcl_vars.mg_bedrock_overworld_max - y -- Overworld bedrock
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local ndiff1 = mcl_vars.mg_bedrock_nether_bottom_max - y -- Nether bedrock, bottom
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local ndiff2 = mcl_vars.mg_bedrock_nether_top_max - y -- Nether bedrock, ceiling
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local top
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if diff == 0 or ndiff1 == 0 or ndiff2 == 4 then
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-- 50% bedrock chance
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top = 2
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elseif diff == 1 or ndiff1 == 1 or ndiff2 == 3 then
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-- 66.666...%
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top = 3
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elseif diff == 2 or ndiff1 == 2 or ndiff2 == 2 then
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-- 75%
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top = 4
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elseif diff == 3 or ndiff1 == 3 or ndiff2 == 1 then
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-- 90%
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top = 10
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elseif diff == 4 or ndiff1 == 4 or ndiff2 == 0 then
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-- 100%
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return true
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else
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-- Not in bedrock layer
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return false
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end
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return pr:next(1, top) <= top-1
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end
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end
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-- Helper function to set all nodes in the layers between min and max.
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-- content_id: Node to set
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-- check: optional.
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-- If content_id, node will be set only if it is equal to check.
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-- If function(pos_to_check, content_id_at_this_pos), will set node only if returns true.
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-- min, max: Minimum and maximum Y levels of the layers to set
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-- minp, maxp: minp, maxp of the on_generated
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-- lvm_used: Set to true if any node in this on_generated has been set before.
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--
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-- returns true if any node was set and lvm_used otherwise
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local function set_layers(data, area, content_id, check, min, max, minp, maxp, lvm_used, pr)
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if (maxp.y >= min and minp.y <= max) then
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for y = math.max(min, minp.y), math.min(max, maxp.y) do
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for x = minp.x, maxp.x do
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for z = minp.z, maxp.z do
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local p_pos = area:index(x, y, z)
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if check then
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if type(check) == "function" and check({x=x,y=y,z=z}, data[p_pos], pr) then
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data[p_pos] = content_id
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lvm_used = true
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elseif check == data[p_pos] then
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data[p_pos] = content_id
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lvm_used = true
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end
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else
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data[p_pos] = content_id
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lvm_used = true
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end
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end
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end
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end
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end
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return lvm_used
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end
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local function set_palette(minp,maxp,data2,area,biomemap,nodes)
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-- Flat area at y=0 to read biome 3 times faster than 5.3.0.get_biome_data(pos).biome: 43us vs 125us per iteration:
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local aream = VoxelArea:new({MinEdge={x=minp.x, y=0, z=minp.z}, MaxEdge={x=maxp.x, y=0, z=maxp.z}})
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local nodes = minetest.find_nodes_in_area(minp, maxp, nodes)
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for n=1, #nodes do
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local n = nodes[n]
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local p_pos = area:index(n.x, n.y, n.z)
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local b_pos = aream:index(n.x, 0, n.z)
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local bn = minetest.get_biome_name(biomemap[b_pos])
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if bn then
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local biome = minetest.registered_biomes[bn]
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if biome and biome._mcl_biome_type then
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data2[p_pos] = biome._mcl_palette_index
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lvm_used = true
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end
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end
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end
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return lvm_used
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end
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-- Below the bedrock, generate air/void
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local function world_structure(vm, data, data2, emin, emax, area, minp, maxp, blockseed)
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local biomemap --ymin, ymax
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local lvm_used = false
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local pr = PseudoRandom(blockseed)
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-- The Void below the Nether:
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lvm_used = set_layers(data, area, c_void , nil, mcl_vars.mapgen_edge_min , mcl_vars.mg_nether_min -1, minp, maxp, lvm_used, pr)
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-- [[ THE NETHER: mcl_vars.mg_nether_min mcl_vars.mg_nether_max ]]
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-- The Air on the Nether roof, https://git.minetest.land/MineClone2/MineClone2/issues/1186
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lvm_used = set_layers(data, area, c_air , nil, mcl_vars.mg_nether_max +1, mcl_vars.mg_nether_max + 128 , minp, maxp, lvm_used, pr)
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-- The Void above the Nether below the End:
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lvm_used = set_layers(data, area, c_void , nil, mcl_vars.mg_nether_max + 128 +1, mcl_vars.mg_end_min -1, minp, maxp, lvm_used, pr)
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-- [[ THE END: mcl_vars.mg_end_min mcl_vars.mg_end_max ]]
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-- The Void above the End below the Realm barrier:
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lvm_used = set_layers(data, area, c_void , nil, mcl_vars.mg_end_max +1, mcl_vars.mg_realm_barrier_overworld_end_min-1, minp, maxp, lvm_used, pr)
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-- Realm barrier between the Overworld void and the End
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lvm_used = set_layers(data, area, c_realm_barrier, nil, mcl_vars.mg_realm_barrier_overworld_end_min , mcl_vars.mg_realm_barrier_overworld_end_max , minp, maxp, lvm_used, pr)
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-- The Void above Realm barrier below the Overworld:
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lvm_used = set_layers(data, area, c_void , nil, mcl_vars.mg_realm_barrier_overworld_end_max+1, mcl_vars.mg_overworld_min -1, minp, maxp, lvm_used, pr)
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if mg_name ~= "singlenode" then
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-- Bedrock
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lvm_used = set_layers(data, area, c_bedrock, bedrock_check, mcl_vars.mg_bedrock_overworld_min, mcl_vars.mg_bedrock_overworld_max, minp, maxp, lvm_used, pr)
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lvm_used = set_layers(data, area, c_bedrock, bedrock_check, mcl_vars.mg_bedrock_nether_bottom_min, mcl_vars.mg_bedrock_nether_bottom_max, minp, maxp, lvm_used, pr)
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lvm_used = set_layers(data, area, c_bedrock, bedrock_check, mcl_vars.mg_bedrock_nether_top_min, mcl_vars.mg_bedrock_nether_top_max, minp, maxp, lvm_used, pr)
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-- Flat Nether
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if mg_name == "flat" then
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lvm_used = set_layers(data, area, c_air, nil, mcl_vars.mg_flat_nether_floor, mcl_vars.mg_flat_nether_ceiling, minp, maxp, lvm_used, pr)
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end
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-- Big lava seas by replacing air below a certain height
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if mcl_vars.mg_lava then
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lvm_used = set_layers(data, area, c_lava, c_air, mcl_vars.mg_overworld_min, mcl_vars.mg_lava_overworld_max, minp, maxp, lvm_used, pr)
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lvm_used = set_layers(data, area, c_nether_lava, c_air, mcl_vars.mg_nether_min, mcl_vars.mg_lava_nether_max, minp, maxp, lvm_used, pr)
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end
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end
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return lvm_used, false
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end
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local function block_fixes(vm, data, data2, emin, emax, area, minp, maxp, blockseed)
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local biomemap = minetest.get_mapgen_object("biomemap")
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local lvm_used = false
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local pr = PseudoRandom(blockseed)
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if minp.y <= mcl_vars.mg_overworld_max and maxp.y >= mcl_vars.mg_overworld_min then
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-- Set param2 (=color) of sugar cane and grass
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lvm_used = set_palette(minp,maxp,data2,area,biomemap,{"mcl_core:reeds","mcl_core:dirt_with_grass"})
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end
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return lvm_used
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end
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-- End block fixes:
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local function end_basic(vm, data, data2, emin, emax, area, minp, maxp, blockseed)
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if maxp.y < mcl_vars.mg_end_min or minp.y > mcl_vars.mg_end_max then return end
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local biomemap --ymin, ymax
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local lvm_used = false
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local pr = PseudoRandom(blockseed)
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local nodes
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if mg_name ~= "v6" then
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nodes = minetest.find_nodes_in_area(emin, emax, {"mcl_core:water_source"})
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if #nodes > 0 then
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lvm_used = true
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for _,n in pairs(nodes) do
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data[area:index(n.x, n.y, n.z)] = c_air
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end
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end
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end
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return true, false
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end
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mcl_mapgen_core.register_generator("world_structure", world_structure, nil, 1, true)
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mcl_mapgen_core.register_generator("end_fixes", end_basic, function(minp,maxp)
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if maxp.y < mcl_vars.mg_end_min or minp.y > mcl_vars.mg_end_max then return end
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end, 9999, true)
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if mg_name ~= "v6" then
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mcl_mapgen_core.register_generator("block_fixes", block_fixes, nil, 9999, true)
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end
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if mg_name == "v6" then
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dofile(modpath.."/v6.lua")
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end
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-- This should be moved to mcl_structures eventually if the dependencies can be sorted out.
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mcl_mapgen_core.register_generator("structures",nil, function(minp, maxp, blockseed)
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local gennotify = minetest.get_mapgen_object("gennotify")
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local has_struct = {}
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local has = false
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local poshash = minetest.hash_node_position(minp)
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for _,struct in pairs(mcl_structures.registered_structures) do
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||
local pr = PseudoRandom(blockseed + 42)
|
||
if struct.deco_id then
|
||
for _, pos in pairs(gennotify["decoration#"..struct.deco_id] or {}) do
|
||
local realpos = vector.offset(pos,0,1,0)
|
||
minetest.remove_node(realpos)
|
||
minetest.fix_light(vector.offset(pos,-1,-1,-1),vector.offset(pos,1,3,1))
|
||
if struct.chunk_probability == nil or (not has and pr:next(1,struct.chunk_probability) == 1 ) then
|
||
mcl_structures.place_structure(realpos,struct,pr,blockseed)
|
||
has=true
|
||
end
|
||
end
|
||
elseif struct.static_pos then
|
||
for _,p in pairs(struct.static_pos) do
|
||
if in_cube(p,minp,maxp) then
|
||
mcl_structures.place_structure(p,struct,pr,blockseed)
|
||
end
|
||
end
|
||
end
|
||
end
|
||
return false, false, false
|
||
end, 100, true)
|