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247
mods/everness/mapgen_after.lua
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247
mods/everness/mapgen_after.lua
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--[[
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Everness. Never ending discovery in Everness mapgen.
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Copyright (C) 2024 SaKeL
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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--]]
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-- Localize data buffer table outside the loop, to be re-used for all
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-- mapchunks, therefore minimising memory use.
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local data = {}
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local p2data = {}
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minetest.register_on_generated(function(minp, maxp, blockseed)
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-- Start time of mapchunk generation.
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-- local t0 = os.clock()
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local rand = PcgRandom(blockseed)
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-- Array containing the biome IDs of nodes in the most recently generated chunk by the current mapgen
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local biomemap = minetest.get_mapgen_object('biomemap')
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-- Table mapping requested generation notification types to arrays of positions at which the corresponding generated structures are located within the current chunk
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local gennotify = minetest.get_mapgen_object('gennotify')
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-- Load the voxelmanip with the result of engine mapgen
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local vm, emin, emax = minetest.get_mapgen_object('voxelmanip')
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-- 'area' is used later to get the voxelmanip indexes for positions
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local area = VoxelArea:new({ MinEdge = emin, MaxEdge = emax })
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-- Get the content ID data from the voxelmanip in the form of a flat array.
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-- Set the buffer parameter to use and reuse 'data' for this.
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vm:get_data(data)
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-- Raw `param2` data read into the `VoxelManip` object
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vm:get_param2_data(p2data)
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-- Side length of mapchunk
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local shared_args = {}
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--
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-- on_data
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--
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-- read/write to `data` what will be eventually saved (set_data)
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-- used for voxelmanip `data` manipulation
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for _, def in ipairs(Everness.on_generated_queue) do
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if def.can_run(biomemap) and def.on_data then
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shared_args[def.name] = shared_args[def.name] or {}
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def.on_data(minp, maxp, area, data, p2data, gennotify, rand, shared_args[def.name])
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end
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end
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-- set data after they have been manipulated (from above)
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vm:set_data(data)
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vm:set_param2_data(p2data)
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--
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-- after_set_data
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--
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-- read-only (but cant and should not manipulate) voxelmanip `data`
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-- used for `place_schematic_on_vmanip` which will invalidate `data`
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-- therefore we are doing it after we set the data
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for _, def in ipairs(Everness.on_generated_queue) do
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if def.can_run(biomemap) and def.after_set_data then
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shared_args[def.name] = shared_args[def.name] or {}
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def.after_set_data(minp, maxp, vm, area, data, p2data, gennotify, rand, shared_args[def.name])
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end
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end
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-- Set the lighting within the `VoxelManip` to a uniform value
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vm:set_lighting({ day = 0, night = 0 }, minp, maxp)
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-- Calculate lighting for what has been created.
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vm:calc_lighting()
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-- Liquid nodes were placed so set them flowing.
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vm:update_liquids()
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-- Write what has been created to the world.
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vm:write_to_map()
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--
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-- after_write_to_map
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--
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-- Cannot read/write voxelmanip or its data
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-- Used for direct manipulation of the world chunk nodes where the
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-- definitions of nodes are available and node callback can be executed
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-- or e.g. for `minetest.fix_light`
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for _, def in ipairs(Everness.on_generated_queue) do
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if def.can_run(biomemap) and def.after_write_to_map then
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shared_args[def.name] = shared_args[def.name] or {}
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def.after_write_to_map(shared_args[def.name], gennotify, rand)
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end
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end
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-- Print generation time of this mapchunk.
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-- local chugent = math.ceil((os.clock() - t0) * 1000)
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-- print('[Everness] Mapchunk generation time ' .. chugent .. ' ms')
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end)
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local mpath = minetest.get_modpath('everness')
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--
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-- Giant Sequoia Tree
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--
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local sequoia_tree_schem = minetest.get_modpath('everness') .. '/schematics/everness_giant_sequoia_tree.mts'
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abdecor.register_advanced_decoration('everness_giant_sequoia_tree',{
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target = {
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place_on = {
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'default:dirt_with_coniferous_litter',
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'default:dirt_with_snow',
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'default:dirt_with_dry_grass',
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},
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spawn_by = {
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'default:dirt_with_coniferous_litter',
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'default:dirt_with_snow',
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'default:dirt_with_dry_grass',
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},
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num_spawn_by = 8,
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sidelen = 80,
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fill_ratio = 0.000095,
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y_max = 31000,
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y_min = 8,
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biomes = {
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'mesa',
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'taiga',
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'coniferous_forest',
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},
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},
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fn = function(mapgen)
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-- Get provided values
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local pos = mapgen.pos
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local va = mapgen.voxelarea
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local vdata = mapgen.data
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local ystride = va.ystride
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local zstride = va.zstride
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-- Check that there is likely enough space to place a tree
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local vpos = va:index(pos.x,pos.y,pos.z)
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for i = 2, 20 do -- y
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if vdata[vpos + ystride * i] ~= minetest.CONTENT_AIR then
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return -- not enough ceiling clearance
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end
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end
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for i = -6, 6 do -- x
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if vdata[vpos + i] == minetest.CONTENT_AIR then
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return -- not enough space in the x dimension
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end
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end
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for i = -6, 6 do -- z
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if vdata[vpos + i * zstride] == minetest.CONTENT_AIR then
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return -- not enough space in the z dimension
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end
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end
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-- Roughly enough space, emerge mapchunks and place a sequoia tree
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minetest.emerge_area(
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vector.new(pos.x - 12, pos.y, pos.z - 12),
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vector.new(pos.x + 12, pos.y + 75, pos.z + 12),
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function(blockpos, action, calls_remaining, param)
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Everness:emerge_area(blockpos, action, calls_remaining, param)
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end,
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{
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callback = function()
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-- Place sequoia tree
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minetest.place_schematic(
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pos,
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sequoia_tree_schem,
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'random',
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nil,
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true,
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'place_center_x, place_center_z'
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)
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-- Fix lighting
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minetest.fix_light(
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{ x = pos.x - 12, y = pos.y, z = pos.z - 12},
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{ x = pos.x + 12, y = pos.y + 75, z = pos.z + 12},
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true
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)
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end
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}
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)
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end,
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})
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--
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-- Underground Mese Tree
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--
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local mese_tree_schem = minetest.get_modpath('everness') .. '/schematics/everness_mese_tree.mts'
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abdecor.register_advanced_decoration('everness_mese_tree_underground',{
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target = {
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place_on = 'everness:moss_block',
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sidelen = 80,
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fill_ratio = 0.0000125,
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y_max = -300,
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y_min = -31000,
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biomes = asuna.features.cave.bamboo,
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flags = 'all_floors',
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},
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fn = function(mapgen)
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-- Get provided values
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local pos = mapgen.pos
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local va = mapgen.voxelarea
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local vdata = mapgen.data
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local ystride = va.ystride
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local zstride = va.zstride
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-- Check that there is likely enough space to place a tree
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local vpos = va:index(pos.x,pos.y,pos.z)
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for i = 2, 10 do -- y
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if vdata[vpos + ystride * i] ~= minetest.CONTENT_AIR then
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return -- not enough ceiling clearance
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end
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end
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vpos = vpos + ystride * 5
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for i = -3, 3 do -- x
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if vdata[vpos + i] ~= minetest.CONTENT_AIR then
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return -- not enough space in the x dimension
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end
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end
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for i = -3, 3 do -- z
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if vdata[vpos + i * zstride] ~= minetest.CONTENT_AIR then
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return -- not enough space in the z dimension
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end
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end
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-- Roughly enough space, place a mese tree
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mapgen.place_schematic({
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pos = pos,
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schematic = mese_tree_schem,
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flags = 'place_center_x,place_center_z',
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})
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-- Fix lighting
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mapgen.calc_lighting(
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{ x = pos.x - 3, y = pos.y, z = pos.z - 3 },
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{ x = pos.x + 3, y = pos.y + 10, z = pos.z + 3 },
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true
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)
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end,
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flags = {
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schematic = true,
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}
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})
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