mcl_mapgen_core = {} local registered_generators = {} local lvm, nodes, param2 = 0, 0, 0 local lvm_buffer = {} local modname = minetest.get_current_modname() local modpath = minetest.get_modpath(modname) -- -- Aliases for map generator outputs -- 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_grass_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", "air") -- Built-in lava generator is too unpredictable, we generate lava on our own 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") if minetest.get_modpath("mclx_core") then minetest.register_alias("mapgen_river_water_source", "mclx_core:river_water_source") else minetest.register_alias("mapgen_river_water_source", "mcl_core:water_source") end 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", "mcl_stairs:stair_cobble") minetest.register_alias("mapgen_sandstonebrick", "mcl_core:sandstonesmooth") minetest.register_alias("mapgen_stair_sandstonebrick", "mcl_stairs:stair_sandstone") minetest.register_alias("mapgen_stair_sandstone_block", "mcl_stairs:stair_sandstone") minetest.register_alias("mapgen_stair_desert_stone", "mcl_stairs:stair_sandstone") local mg_name = minetest.get_mapgen_setting("mg_name") local superflat = mg_name == "flat" and minetest.get_mapgen_setting("mcl_superflat_classic") == "true" -- End exit portal position local END_EXIT_PORTAL_POS = vector.new(-3, -27003, -3) -- Content IDs local c_bedrock = minetest.get_content_id("mcl_core:bedrock") local c_obsidian = minetest.get_content_id("mcl_core:obsidian") local c_stone = minetest.get_content_id("mcl_core:stone") local c_dirt = minetest.get_content_id("mcl_core:dirt") local c_dirt_with_grass = minetest.get_content_id("mcl_core:dirt_with_grass") local c_dirt_with_grass_snow = minetest.get_content_id("mcl_core:dirt_with_grass_snow") local c_reeds = minetest.get_content_id("mcl_core:reeds") local c_sand = minetest.get_content_id("mcl_core:sand") --local c_sandstone = minetest.get_content_id("mcl_core:sandstone") local c_void = minetest.get_content_id("mcl_core:void") local c_lava = minetest.get_content_id("mcl_core:lava_source") local c_water = minetest.get_content_id("mcl_core:water_source") local c_soul_sand = minetest.get_content_id("mcl_nether:soul_sand") local c_netherrack = minetest.get_content_id("mcl_nether:netherrack") local c_nether_lava = minetest.get_content_id("mcl_nether:nether_lava_source") --local c_end_stone = minetest.get_content_id("mcl_end:end_stone") local c_realm_barrier = minetest.get_content_id("mcl_core:realm_barrier") local c_top_snow = minetest.get_content_id("mcl_core:snow") local c_snow_block = minetest.get_content_id("mcl_core:snowblock") local c_clay = minetest.get_content_id("mcl_core:clay") local c_leaves = minetest.get_content_id("mcl_core:leaves") local c_jungleleaves = minetest.get_content_id("mcl_core:jungleleaves") --local c_jungletree = minetest.get_content_id("mcl_core:jungletree") local c_cocoa_1 = minetest.get_content_id("mcl_cocoas:cocoa_1") local c_cocoa_2 = minetest.get_content_id("mcl_cocoas:cocoa_2") local c_cocoa_3 = minetest.get_content_id("mcl_cocoas:cocoa_3") local c_vine = minetest.get_content_id("mcl_core:vine") local c_air = minetest.CONTENT_AIR dofile(modpath.."/ores.lua") local mg_flags = minetest.settings:get_flags("mg_flags") -- Inform other mods of dungeon setting for MCL2-style dungeons mcl_vars.mg_dungeons = mg_flags.dungeons and not superflat -- Disable builtin dungeons, we provide our own dungeons mg_flags.dungeons = false if superflat then -- Enforce superflat-like mapgen: no caves, decor, lakes and hills mg_flags.caves = false mg_flags.decorations = false minetest.set_mapgen_setting("mgflat_spflags", "nolakes,nohills", true) end local mg_flags_str = "" for k,v in pairs(mg_flags) do if v == false then k = "no" .. k end mg_flags_str = mg_flags_str .. k .. "," end if string.len(mg_flags_str) > 0 then mg_flags_str = string.sub(mg_flags_str, 1, string.len(mg_flags_str)-1) end minetest.set_mapgen_setting("mg_flags", mg_flags_str, true) local function between(x, y, z) -- x is between y and z (inclusive) return y <= x and x <= z end local function in_cube(tpos,wpos1,wpos2) local xmax=wpos2.x local xmin=wpos1.x local ymax=wpos2.y local ymin=wpos1.y local zmax=wpos2.z local zmin=wpos1.z if wpos1.x > wpos2.x then xmax=wpos1.x xmin=wpos2.x end if wpos1.y > wpos2.y then ymax=wpos1.y ymin=wpos2.y end if wpos1.z > wpos2.z then zmax=wpos1.z zmin=wpos2.z end if between(tpos.x,xmin,xmax) and between(tpos.y,ymin,ymax) and between(tpos.z,zmin,zmax) then return true end return false end -- Helper function for converting a MC probability to MT, with -- regards to MapBlocks. -- Some MC generated structures are generated on per-chunk -- probability. -- The MC probability is 1/x per Minecraft chunk (16×16). -- x: The MC probability is 1/x. -- minp, maxp: MapBlock limits -- returns: Probability (1/return_value) for a single MT mapblock local function minecraft_chunk_probability(x, minp, maxp) -- 256 is the MC chunk height return x * (((maxp.x-minp.x+1)*(maxp.z-minp.z+1)) / 256) end -- Takes x and z coordinates and minp and maxp of a generated chunk -- (in on_generated callback) and returns a biomemap index) -- Inverse function of biomemap_to_xz local function xz_to_biomemap_index(x, z, minp, maxp) local xwidth = maxp.x - minp.x + 1 local zwidth = maxp.z - minp.z + 1 local minix = x % xwidth local miniz = z % zwidth return (minix + miniz * zwidth) + 1 end -- Buffers for LuaVoxelManip -- local lvm_buffer = {} -- local lvm_buffer_param2 = {} minetest.register_on_generated(function(minp, maxp, blockseed) minetest.log("action", "[mcl_mapgen_core] Generating chunk " .. minetest.pos_to_string(minp) .. " ... " .. minetest.pos_to_string(maxp)) local p1, p2 = {x=minp.x, y=minp.y, z=minp.z}, {x=maxp.x, y=maxp.y, z=maxp.z} if lvm > 0 then local lvm_used, shadow, deco_used = false, false local lb2 = {} -- param2 local vm, emin, emax = minetest.get_mapgen_object("voxelmanip") local e1, e2 = {x=emin.x, y=emin.y, z=emin.z}, {x=emax.x, y=emax.y, z=emax.z} local data2 local data = vm:get_data(lvm_buffer) if param2 > 0 then data2 = vm:get_param2_data(lb2) end local area = VoxelArea:new({MinEdge=e1, MaxEdge=e2}) for _, rec in ipairs(registered_generators) do if rec.vf then local lvm_used0, shadow0, deco = rec.vf(vm, data, data2, e1, e2, area, p1, p2, blockseed) if lvm_used0 then lvm_used = true end if shadow0 then shadow = true end if deco then deco_used = true end end end if lvm_used then -- Write stuff vm:set_data(data) if param2 > 0 then vm:set_param2_data(data2) end if deco_used then minetest.generate_decorations(vm) end vm:calc_lighting(p1, p2, shadow) vm:write_to_map() vm:update_liquids() end end if nodes > 0 then for _, rec in ipairs(registered_generators) do if rec.nf then rec.nf(p1, p2, blockseed) end end end mcl_vars.add_chunk(minp) end) function minetest.register_on_generated(node_function) mcl_mapgen_core.register_generator("mod_"..minetest.get_current_modname().."_"..tostring(#registered_generators+1), nil, node_function) end function mcl_mapgen_core.register_generator(id, lvm_function, node_function, priority, needs_param2) if not id then return end local priority = priority or 5000 if lvm_function then lvm = lvm + 1 end if node_function then nodes = nodes + 1 end if needs_param2 then param2 = param2 + 1 end local new_record = { id = id, i = priority, vf = lvm_function, nf = node_function, needs_param2 = needs_param2, } table.insert(registered_generators, new_record) table.sort(registered_generators, function(a, b) return (a.i < b.i) or ((a.i == b.i) and a.vf and (b.vf == nil)) end) end function mcl_mapgen_core.unregister_generator(id) local index for i, gen in ipairs(registered_generators) do if gen.id == id then index = i break end end if not index then return end local rec = registered_generators[index] table.remove(registered_generators, index) if rec.vf then lvm = lvm - 1 end if rec.nf then nodes = nodes - 1 end if rec.needs_param2 then param2 = param2 - 1 end --if rec.needs_level0 then level0 = level0 - 1 end end -- Generate basic layer-based nodes: void, bedrock, realm barrier, lava seas, etc. -- Also perform some basic node replacements. local bedrock_check if mcl_vars.mg_bedrock_is_rough then function bedrock_check(pos, _, pr) local y = pos.y -- 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. local diff = mcl_vars.mg_bedrock_overworld_max - y -- Overworld bedrock local ndiff1 = mcl_vars.mg_bedrock_nether_bottom_max - y -- Nether bedrock, bottom local ndiff2 = mcl_vars.mg_bedrock_nether_top_max - y -- Nether bedrock, ceiling local top if diff == 0 or ndiff1 == 0 or ndiff2 == 4 then -- 50% bedrock chance top = 2 elseif diff == 1 or ndiff1 == 1 or ndiff2 == 3 then -- 66.666...% top = 3 elseif diff == 2 or ndiff1 == 2 or ndiff2 == 2 then -- 75% top = 4 elseif diff == 3 or ndiff1 == 3 or ndiff2 == 1 then -- 90% top = 10 elseif diff == 4 or ndiff1 == 4 or ndiff2 == 0 then -- 100% return true else -- Not in bedrock layer return false end return pr:next(1, top) <= top-1 end end -- Helper function to set all nodes in the layers between min and max. -- content_id: Node to set -- check: optional. -- If content_id, node will be set only if it is equal to check. -- If function(pos_to_check, content_id_at_this_pos), will set node only if returns true. -- min, max: Minimum and maximum Y levels of the layers to set -- minp, maxp: minp, maxp of the on_generated -- lvm_used: Set to true if any node in this on_generated has been set before. -- -- returns true if any node was set and lvm_used otherwise local function set_layers(data, area, content_id, check, min, max, minp, maxp, lvm_used, pr) if (maxp.y >= min and minp.y <= max) then for y = math.max(min, minp.y), math.min(max, maxp.y) do for x = minp.x, maxp.x do for z = minp.z, maxp.z do local p_pos = area:index(x, y, z) if check then if type(check) == "function" and check({x=x,y=y,z=z}, data[p_pos], pr) then data[p_pos] = content_id lvm_used = true elseif check == data[p_pos] then data[p_pos] = content_id lvm_used = true end else data[p_pos] = content_id lvm_used = true end end end end end return lvm_used end local function set_palette(minp,maxp,data2,area,biomemap,nodes) -- 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: local aream = VoxelArea:new({MinEdge={x=minp.x, y=0, z=minp.z}, MaxEdge={x=maxp.x, y=0, z=maxp.z}}) local nodes = minetest.find_nodes_in_area(minp, maxp, nodes) for n=1, #nodes do local n = nodes[n] local p_pos = area:index(n.x, n.y, n.z) local b_pos = aream:index(n.x, 0, n.z) local bn = minetest.get_biome_name(biomemap[b_pos]) if bn then local biome = minetest.registered_biomes[bn] if biome and biome._mcl_biome_type then data2[p_pos] = biome._mcl_palette_index lvm_used = true end end end return lvm_used end -- Below the bedrock, generate air/void local function basic(vm, data, data2, emin, emax, area, minp, maxp, blockseed) local biomemap --ymin, ymax local lvm_used = false local pr = PseudoRandom(blockseed) -- The Void below the Nether: 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) -- [[ THE NETHER: mcl_vars.mg_nether_min mcl_vars.mg_nether_max ]] -- The Air on the Nether roof, https://git.minetest.land/MineClone2/MineClone2/issues/1186 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) -- The Void above the Nether below the End: 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) -- [[ THE END: mcl_vars.mg_end_min mcl_vars.mg_end_max ]] -- The Void above the End below the Realm barrier: 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) -- Realm barrier between the Overworld void and the End 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) -- The Void above Realm barrier below the Overworld: 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) if mg_name ~= "singlenode" then -- Bedrock 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) 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) 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) -- Flat Nether if mg_name == "flat" then 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) end -- Big lava seas by replacing air below a certain height if mcl_vars.mg_lava then 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) 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) end end return lvm_used, false end local function block_fixes(vm, data, data2, emin, emax, area, minp, maxp, blockseed) local biomemap = minetest.get_mapgen_object("biomemap") local lvm_used = false local pr = PseudoRandom(blockseed) if minp.y <= mcl_vars.mg_overworld_max and maxp.y >= mcl_vars.mg_overworld_min then -- Set param2 (=color) of sugar cane and grass lvm_used = set_palette(minp,maxp,data2,area,biomemap,{"mcl_core:reeds","mcl_core:dirt_with_grass"}) end return lvm_used end -- End block fixes: -- * Replace water with end stone or air (depending on height). -- * Remove stone, sand, dirt in v6 so our End map generator works in v6. -- * Generate spawn platform (End portal destination) local function end_basic(vm, data, data2, emin, emax, area, minp, maxp, blockseed) if maxp.y < mcl_vars.mg_end_min or minp.y > mcl_vars.mg_end_max then return end local biomemap --ymin, ymax local lvm_used = false local pr = PseudoRandom(blockseed) local nodes if mg_name ~= "v6" then nodes = minetest.find_nodes_in_area(emin, emax, {"mcl_core:water_source"}) if #nodes > 0 then lvm_used = true for _,n in pairs(nodes) do data[area:index(n.x, n.y, n.z)] = c_air end end end -- Final hackery: Set sun light level in the End. -- -26912 is at a mapchunk border. vm:set_lighting({day=15, night=15}) lvm_used = true local shadow = true if minp.y >= mcl_vars.mg_end_min and maxp.y <= -26911 then shadow = false end return lvm_used, shadow end mcl_mapgen_core.register_generator("main", basic, nil, 1, true) mcl_mapgen_core.register_generator("end_fixes", end_basic, nil, 20, true) if mg_name ~= "v6" then mcl_mapgen_core.register_generator("block_fixes", block_fixes, nil, 5, true) end mcl_mapgen_core.register_generator("structures",nil, function(minp, maxp, blockseed) local gennotify = minetest.get_mapgen_object("gennotify") local has_struct = {} local has = false local poshash = minetest.hash_node_position(minp) for _,struct in pairs(mcl_structures.registered_structures) do 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) 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 end, 100, true) if mg_name == "v6" then dofile(modpath.."/v6.lua") end