466 lines
20 KiB
Lua
466 lines
20 KiB
Lua
--[[
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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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--
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-- Register biomes
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--
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local y_max = Everness.settings.biomes.everness_mineral_waters.y_max
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local y_min = Everness.settings.biomes.everness_mineral_waters.y_min
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-- Mineral Waters
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minetest.register_biome({
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name = 'everness_mineral_waters',
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node_top = 'everness:mineral_sand',
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depth_top = 1,
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node_filler = 'everness:mineral_stone',
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depth_filler = 1,
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node_stone = 'everness:mineral_stone',
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node_riverbed = 'everness:mineral_sand',
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depth_riverbed = 2,
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node_dungeon = 'everness:mineral_stone_brick',
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node_dungeon_alt = 'everness:mineral_stone_brick_with_growth',
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node_dungeon_stair = 'stairs:stair_bamboo_wood',
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y_max = y_max,
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y_min = y_min,
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vertical_blend = 4,
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heat_point = 78,
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humidity_point = 58,
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})
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--
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-- Register decorations
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--
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minetest.register_decoration({
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name = 'everness:palm_tree_1',
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deco_type = 'schematic',
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place_on = { 'everness:mineral_sand' },
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sidelen = 16,
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noise_params = {
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offset = 0,
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scale = 0.02,
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spread = { x = 200, y = 200, z = 200 },
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seed = 329,
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octaves = 3,
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persist = 0.6
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},
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biomes = { 'everness_mineral_waters' },
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y_max = y_max,
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y_min = y_min,
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schematic = minetest.get_modpath('everness') .. '/schematics/everness_palm_tree.mts',
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flags = 'place_center_x, place_center_z',
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spawn_by = {
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'everness:mineral_water_source',
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'everness:mineral_stone_brick',
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'everness:mineral_stone_brick_with_growth',
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'everness:mineral_stone_brick_with_flower_growth',
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'everness:mineral_sandstone',
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'everness:mineral_sandstone_block'
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},
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num_spawn_by = 1,
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check_offset = -1,
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})
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minetest.register_decoration({
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name = 'everness:palm_tree_2',
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deco_type = 'schematic',
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place_on = { 'everness:mineral_sand' },
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sidelen = 16,
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noise_params = {
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offset = 0,
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scale = 0.02,
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spread = { x = 200, y = 200, z = 200 },
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seed = 329,
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octaves = 3,
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persist = 0.6
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},
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biomes = { 'everness_mineral_waters' },
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y_max = y_max,
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y_min = y_min,
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schematic = minetest.get_modpath('everness') .. '/schematics/everness_palm_tree.mts',
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flags = 'place_center_x, place_center_z',
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spawn_by = {
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'everness:mineral_water_source',
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'everness:mineral_stone_brick',
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'everness:mineral_stone_brick_with_growth',
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'everness:mineral_stone_brick_with_flower_growth',
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'everness:mineral_sandstone',
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'everness:mineral_sandstone_block'
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},
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num_spawn_by = 1,
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check_offset = 1,
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})
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minetest.register_decoration({
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name = 'everness:water_geyser',
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deco_type = 'simple',
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place_on = { 'everness:mineral_sand' },
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sidelen = 16,
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noise_params = {
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offset = 0,
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scale = 0.02,
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spread = { x = 200, y = 200, z = 200 },
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seed = 329,
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octaves = 3,
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persist = 0.6
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},
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biomes = { 'everness_mineral_waters' },
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y_max = y_max,
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y_min = y_min,
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decoration = { 'everness:water_geyser' },
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spawn_by = {
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'everness:mineral_water_source',
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'everness:mineral_stone_brick',
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'everness:mineral_stone_brick_with_growth',
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'everness:mineral_stone_brick_with_flower_growth',
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'everness:mineral_sandstone',
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'everness:mineral_sandstone_block'
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},
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num_spawn_by = 1,
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check_offset = -1,
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})
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--
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-- ABM
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--
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minetest.register_abm({
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label = 'everness:water_geyser',
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nodenames = { 'everness:water_geyser' },
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interval = 16,
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chance = 16,
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catch_up = false,
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action = function(pos, node)
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minetest.swap_node(pos, { name = 'everness:water_geyser_active' })
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minetest.get_node_timer(pos):start(1)
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end
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})
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--
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-- On Generated
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--
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-- Get the content IDs for the nodes used
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local c_everness_mineral_water_source = minetest.get_content_id('everness:mineral_water_source')
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local c_everness_mineral_stone = minetest.get_content_id('everness:mineral_stone')
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local c_everness_mineral_stone_brick = minetest.get_content_id('everness:mineral_stone_brick')
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local c_everness_mineral_stone_brick_with_growth = minetest.get_content_id('everness:mineral_stone_brick_with_growth')
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local c_everness_mineral_stone_brick_with_flower_growth = minetest.get_content_id('everness:mineral_stone_brick_with_flower_growth')
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local c_everness_mineral_sand = minetest.get_content_id('everness:mineral_sand')
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local c_everness_mineral_sandstone = minetest.get_content_id('everness:mineral_sandstone')
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local c_everness_mineral_sandstone_block = minetest.get_content_id('everness:mineral_sandstone_block')
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local c_everness_mineral_waters_marker = minetest.get_content_id('everness:mineral_waters_marker')
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local pool_build_nodes = {
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{
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c_everness_mineral_stone,
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c_everness_mineral_stone_brick,
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c_everness_mineral_stone_brick_with_growth,
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c_everness_mineral_stone_brick_with_flower_growth
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},
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{
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c_everness_mineral_sandstone,
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c_everness_mineral_sandstone_block
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}
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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 water_level = tonumber(minetest.settings:get('water_level'))
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local function find_irecursive(table, c_id)
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local found = false
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for i, v in ipairs(table) do
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if type(v) == 'table' then
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find_irecursive(v, c_id)
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end
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if c_id == v then
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found = true
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break
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end
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end
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return found
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end
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-- Called after generating a piece of world. Modifying nodes inside the area is a bit faster than usual.
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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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-- 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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if maxp.y >= water_level then
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-- Above sea level
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local rand_version = rand:next(1, 2)
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if rand_version == 1 then
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for y = minp.y, maxp.y do
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local precision_perc = 75
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for z = minp.z, maxp.z do
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for x = minp.x, maxp.x do
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local ai = area:index(x, y, z)
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local node_name = minetest.get_name_from_content_id(data[ai])
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local node_def = minetest.registered_nodes[node_name]
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local position = area:position(ai)
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local biome_data = minetest.get_biome_data(position)
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if not biome_data then
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return
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end
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local biome_name = minetest.get_biome_name(biome_data.biome)
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if not biome_name then
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return
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end
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if
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data[ai + area.ystride] == minetest.CONTENT_AIR
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and node_def
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and node_def.walkable
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and biome_name == 'everness_mineral_waters'
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then
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local length = 5 + rand:next(0, 10)
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local width = 5 + rand:next(0, 10)
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local height = 3 + rand:next(0, 4)
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local walkable_nodes = {}
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-- find space for lake (walkable rectangle)
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-- for hi = 1, height do
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for li = 1, length do
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for wi = 1, width do
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local p = vector.new(position.x + li, position.y, position.z + wi)
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-- local p_above = vector.new(position.x + li, position.y + 1, position.z + wi)
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local n_name = minetest.get_name_from_content_id(data[area:indexp(p)])
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-- local n_name_above = minetest.get_name_from_content_id(data[area:indexp(p_above)])
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local n_def = minetest.registered_nodes[n_name]
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local b_data = minetest.get_biome_data(p)
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if not b_data then
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return
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end
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local b_name = minetest.get_biome_name(b_data.biome)
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if not b_name then
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return
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end
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if b_name ~= 'everness_mineral_waters'
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or minetest.get_item_group(n_name, 'tree') > 0
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or minetest.get_item_group(n_name, 'leaves') > 0
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then
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-- bordering with anohter biome, be more precise in placing
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precision_perc = 100
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end
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if n_def
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and n_def.walkable
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and b_name == 'everness_mineral_waters'
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-- and n_name_above == 'air'
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and minetest.get_item_group(n_name, 'tree') == 0
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and minetest.get_item_group(n_name, 'leaves') == 0
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then
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table.insert(walkable_nodes, p)
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end
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end
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end
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-- end
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-- build pool (cuboid)
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local pool_build_nodes_group = pool_build_nodes[rand:next(1, #pool_build_nodes)]
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if #walkable_nodes >= (width * length / 100) * precision_perc then
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-- offset y so the pools are sticking out / sinking in from the ground
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local pos_offset = vector.new(position)
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pos_offset.y = (position.y - height) + rand:next(0, math.ceil(height / 2))
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for hi = 1, height do
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for li = 1, length do
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for wi = 1, width do
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local mineral_stone = pool_build_nodes_group[rand:next(1, #pool_build_nodes_group)]
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local p_offset = vector.new(position.x + li, pos_offset.y + hi, position.z + wi)
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local current_c_id = data[area:indexp(p_offset)]
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-- Check for water and build nodes before replacing, this will make pools connected and will not replace already built walls from another pool near by
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if hi == 1
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and current_c_id ~= c_everness_mineral_water_source
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and not find_irecursive(pool_build_nodes, current_c_id)
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then
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-- build pool floor
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data[area:indexp(p_offset)] = mineral_stone
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elseif hi ~= 1
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and (wi == 1 or wi == width)
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and current_c_id ~= c_everness_mineral_water_source
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and not find_irecursive(pool_build_nodes, current_c_id)
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then
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-- build pool wall
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data[area:indexp(p_offset)] = mineral_stone
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elseif hi ~= 1
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and (li == 1 or li == length)
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and (wi ~= 1 or wi ~= width)
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and current_c_id ~= c_everness_mineral_water_source
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and not find_irecursive(pool_build_nodes, current_c_id)
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then
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-- build pool wall
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data[area:indexp(p_offset)] = mineral_stone
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else
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-- fill in the pool with water
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data[area:indexp(p_offset)] = c_everness_mineral_water_source
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end
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-- place loot chest marker in the middle of the pool floor
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if hi == 2
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and height > 4
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and math.ceil(length / 2) == li
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and math.ceil(width / 2) == wi
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and data[area:indexp(p_offset) - area.ystride] ~= c_everness_mineral_water_source
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and rand:next(0, 100) < 3
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then
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data[area:indexp(p_offset)] = c_everness_mineral_waters_marker
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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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end
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end
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end
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end
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elseif rand_version == 2 then
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for z = minp.z, maxp.z do
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for y = minp.y, maxp.y do
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for x = minp.x, maxp.x do
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local ai = area:index(x, y, z)
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local c_current = data[ai]
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-- +Y, -Y, +X, -X, +Z, -Z
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-- top, bottom, right, left, front, back
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-- above
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-- local c_above = data[ai + area.ystride]
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-- below
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-- local c_below = data[ai - area.ystride]
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-- right
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local c_right = data[ai + 1]
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-- left
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local c_left = data[ai - 1]
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-- front
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local c_front = data[ai + (area.zstride * 2)]
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-- back
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local c_back = data[ai - (area.zstride * 2)]
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local keep_going = true
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local while_count = 1
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local max_dig_depth = 11
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if
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c_current == c_everness_mineral_sand
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and (
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c_right == c_everness_mineral_sand
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or c_right == c_everness_mineral_water_source
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or c_right == c_everness_mineral_stone
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)
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and (
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c_left == c_everness_mineral_sand
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or c_left == c_everness_mineral_water_source
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or c_left == c_everness_mineral_stone
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)
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and (
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c_front == c_everness_mineral_sand
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or c_front == c_everness_mineral_water_source
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or c_front == c_everness_mineral_stone
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)
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and (
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c_back == c_everness_mineral_sand
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or c_back == c_everness_mineral_water_source
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or c_back == c_everness_mineral_stone
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)
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then
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-- dig below
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while keep_going and while_count < max_dig_depth do
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local while_index = ai - area.ystride * while_count
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if
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-- below
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data[while_index] == c_everness_mineral_stone
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and (
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-- right
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data[while_index + 1 + area.ystride] == c_everness_mineral_sand
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or data[while_index + 1 + area.ystride] == c_everness_mineral_water_source
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or data[while_index + 1 + area.ystride] == c_everness_mineral_stone
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)
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and (
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-- left
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data[while_index - 1 + area.ystride] == c_everness_mineral_sand
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or data[while_index - 1 + area.ystride] == c_everness_mineral_water_source
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or data[while_index - 1 + area.ystride] == c_everness_mineral_stone
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)
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and (
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-- front
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data[while_index + area.zstride + area.ystride] == c_everness_mineral_sand
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or data[while_index + area.zstride + area.ystride] == c_everness_mineral_water_source
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or data[while_index + area.zstride + area.ystride] == c_everness_mineral_stone
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)
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and (
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-- back
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data[while_index - area.zstride + area.ystride] == c_everness_mineral_sand
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or data[while_index - area.zstride + area.ystride] == c_everness_mineral_water_source
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or data[while_index - area.zstride + area.ystride] == c_everness_mineral_stone
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)
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then
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data[while_index + area.ystride] = c_everness_mineral_water_source
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else
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keep_going = false
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end
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while_count = while_count + 1
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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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end
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vm:set_data(data)
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-- Generate all registered decorations within the VoxelManip `vm` and in the area from `pos1` to `pos2`
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minetest.generate_decorations(vm)
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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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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('[lvm_example] Mapchunk generation time ' .. chugent .. ' ms')
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end)
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