Add new textures and sounds

mapgen_coral_forest_deep_ocean.lua

@@ -0,0 +1,412 @@
+--[[
+    Everness. Never ending discovery in Everness mapgen.
+    Copyright (C) 2023 SaKeL <juraj.vajda@gmail.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to juraj.vajda@gmail.com
+--]]
+
+--
+-- Register biomes
+--
+
+local y_max = Everness.settings.biomes.everness_coral_forest_deep_ocean.y_max
+local y_min = Everness.settings.biomes.everness_coral_forest_deep_ocean.y_min
+
+-- Coral Forest Ocean
+
+minetest.register_biome({
+    name = 'everness_coral_forest_deep_ocean',
+    node_top = 'everness:coral_forest_deep_ocean_sand',
+    depth_top = 1,
+    node_filler = 'everness:coral_forest_deep_ocean_sand',
+    depth_filler = 3,
+    node_riverbed = 'everness:coral_forest_deep_ocean_sand',
+    depth_riverbed = 2,
+    node_cave_liquid = 'default:water_source',
+    node_dungeon = 'everness:coral_deep_ocean_sandstone_block',
+    node_dungeon_alt = 'everness:coral_deep_ocean_sandstone_brick',
+    node_dungeon_stair = 'stairs:stair_coral_deep_ocean_sandstone_block',
+    y_max = y_max,
+    y_min = y_min,
+    heat_point = 60,
+    humidity_point = 50,
+})
+
+-- Blob ore.
+-- These before scatter ores to avoid other ores in blobs.
+
+-- Coral Desert Stone
+
+minetest.register_ore({
+    ore_type = 'blob',
+    ore = 'everness:coral_desert_stone',
+    wherein = { 'default:stone' },
+    clust_scarcity = 16 * 16 * 16,
+    clust_size = 5,
+    y_max = y_max,
+    y_min = y_min,
+    noise_threshold = 0.0,
+    noise_params = {
+        offset = 0.5,
+        scale = 0.2,
+        spread = { x = 5, y = 5, z = 5 },
+        seed = -316,
+        octaves = 1,
+        persist = 0.0
+    },
+    biomes = { 'everness_coral_forest_ocean' }
+})
+
+--
+-- Register decorations
+--
+
+-- Coral reef
+
+minetest.register_decoration({
+    name = 'everness:coral_forest_deep_ocean_coral_reef_pink',
+    deco_type = 'schematic',
+    place_on = { 'everness:coral_forest_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    noise_params = {
+        offset = -0.004,
+        scale = 0.01,
+        spread = { x = 100, y = 100, z = 100 },
+        seed = 137,
+        octaves = 3,
+        persist = 0.7,
+    },
+    biomes = { 'everness_coral_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_coral_forest_deep_ocean_coral_reef_pink.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:coral_forest_deep_ocean_coral_reef_cyan',
+    deco_type = 'schematic',
+    place_on = { 'everness:coral_forest_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    noise_params = {
+        offset = -0.004,
+        scale = 0.01,
+        spread = { x = 100, y = 100, z = 100 },
+        seed = 137,
+        octaves = 3,
+        persist = 0.7,
+    },
+    biomes = { 'everness_coral_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_coral_forest_deep_ocean_coral_reef_cyan.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:coral_forest_deep_ocean_coral_reef_green',
+    deco_type = 'schematic',
+    place_on = { 'everness:coral_forest_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    noise_params = {
+        offset = -0.004,
+        scale = 0.01,
+        spread = { x = 100, y = 100, z = 100 },
+        seed = 137,
+        octaves = 3,
+        persist = 0.7,
+    },
+    biomes = { 'everness_coral_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_coral_forest_deep_ocean_coral_reef_green.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:coral_forest_deep_ocean_coral_reef_red',
+    deco_type = 'schematic',
+    place_on = { 'everness:coral_forest_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    noise_params = {
+        offset = -0.004,
+        scale = 0.01,
+        spread = { x = 100, y = 100, z = 100 },
+        seed = 137,
+        octaves = 3,
+        persist = 0.7,
+    },
+    biomes = { 'everness_coral_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_coral_forest_deep_ocean_coral_reef_red.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:everness_coral_forest_deep_ocean_pink',
+    deco_type = 'schematic',
+    place_on = { 'everness:coral_forest_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    fill_ratio = 0.002,
+    biomes = { 'everness_coral_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_coral_forest_deep_ocean_coral_pink.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:everness_coral_forest_deep_ocean_cyan',
+    deco_type = 'schematic',
+    place_on = { 'everness:coral_forest_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    fill_ratio = 0.002,
+    biomes = { 'everness_coral_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_coral_forest_deep_ocean_coral_cyan.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:everness_coral_forest_deep_ocean_green',
+    deco_type = 'schematic',
+    place_on = { 'everness:coral_forest_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    fill_ratio = 0.002,
+    biomes = { 'everness_coral_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_coral_forest_deep_ocean_coral_green.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:everness_coral_forest_deep_ocean_red',
+    deco_type = 'schematic',
+    place_on = { 'everness:coral_forest_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    fill_ratio = 0.002,
+    biomes = { 'everness_coral_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_coral_forest_deep_ocean_coral_red.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:coral_forest_deep_ocean_mud',
+    deco_type = 'simple',
+    place_on = { 'everness:coral_forest_deep_ocean_sand' },
+    place_offset_y = -1,
+    sidelen = 4,
+    fill_ratio = 0.002,
+    biomes = { 'everness_coral_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    flags = 'force_placement',
+    decoration = { 'everness:coral_deep_ocean_mud' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+})
+
+minetest.register_decoration({
+    name = 'everness:coral_forest_deep_ocean_plants_1',
+    deco_type = 'simple',
+    place_on = { 'everness:coral_forest_deep_ocean_sand' },
+    place_offset_y = -1,
+    sidelen = 4,
+    noise_params = {
+        offset = 0,
+        scale = 0.02,
+        spread = { x = 200, y = 200, z = 200 },
+        seed = 329,
+        octaves = 3,
+        persist = 0.6
+    },
+    biomes = { 'everness_coral_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    flags = 'force_placement',
+    decoration = { 'everness:coral_forest_deep_ocean_coral_plant_1' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+})
+
+minetest.register_decoration({
+    name = 'everness:coral_forest_deep_ocean_plants_2',
+    deco_type = 'simple',
+    place_on = { 'everness:coral_forest_deep_ocean_sand' },
+    place_offset_y = -1,
+    sidelen = 4,
+    noise_params = {
+        offset = -0.02,
+        scale = 0.04,
+        spread = { x = 200, y = 200, z = 200 },
+        seed = 436,
+        octaves = 3,
+        persist = 0.6
+    },
+    biomes = { 'everness_coral_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    flags = 'force_placement',
+    decoration = { 'everness:coral_forest_deep_ocean_coral_plant_2' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+})
+
+minetest.register_decoration({
+    name = 'everness:coral_forest_deep_ocean_plants_3',
+    deco_type = 'simple',
+    place_on = { 'everness:coral_forest_deep_ocean_sand' },
+    place_offset_y = -1,
+    sidelen = 4,
+    noise_params = {
+        offset = -0.02,
+        scale = 0.04,
+        spread = { x = 200, y = 200, z = 200 },
+        seed = 19822,
+        octaves = 3,
+        persist = 0.6
+    },
+    biomes = { 'everness_coral_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    flags = 'force_placement',
+    decoration = { 'everness:coral_forest_deep_ocean_coral_plant_3' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+})
+
+--
+-- On Generated
+--
+
+local c_water_source = minetest.get_content_id('default:water_source')
+local c_coral_forest_deep_ocean_sand = minetest.get_content_id('everness:coral_forest_deep_ocean_sand')
+
+-- Localize data buffer table outside the loop, to be re-used for all
+-- mapchunks, therefore minimising memory use.
+local data = {}
+local chance = 25
+local rotations = { '0', '90', '180', '270' }
+
+-- size = { x = 11, y = 17, z = 12 }
+local house_volume = 11 * 17 * 12
+local house_schem = minetest.get_modpath('everness') .. '/schematics/everness_coral_forest_deep_ocean_house.mts'
+
+minetest.register_on_generated(function(minp, maxp, blockseed)
+    local rand = PcgRandom(blockseed)
+    local vm, emin, emax = minetest.get_mapgen_object('voxelmanip')
+    local area = VoxelArea:new({ MinEdge = emin, MaxEdge = emax })
+    -- Get the content ID data from the voxelmanip in the form of a flat array.
+    -- Set the buffer parameter to use and reuse 'data' for this.
+    vm:get_data(data)
+
+    if y_min < maxp.y and maxp.y < y_max then
+        local already_placed = false
+        -- Process the content IDs in 'data'.
+        -- The most useful order is a ZYX loop because:
+        -- 1. This matches the order of the 3D noise flat array.
+        -- 2. This allows a simple +1 incrementing of the voxelmanip index along x
+        -- rows.
+        for z = minp.z, maxp.z do
+            if already_placed then
+                break
+            end
+
+            for y = minp.y, maxp.y do
+                if already_placed then
+                    break
+                end
+
+                for x = minp.x, maxp.x do
+                    if already_placed then
+                        break
+                    end
+
+                    -- Voxelmanip index for the flat array of content IDs.
+                    -- Initialise to first node in this x row.
+                    local vi = area:index(x, y, z)
+
+                    if data[vi + area.ystride] == c_water_source and data[vi] == c_coral_forest_deep_ocean_sand then
+                        local rotation = rotations[rand:next(1, #rotations)]
+                        local s_pos = area:position(vi)
+                        local biome_data = minetest.get_biome_data(s_pos)
+
+                        if not biome_data then
+                            return
+                        end
+
+                        local biome_name = minetest.get_biome_name(biome_data.biome)
+
+                        if not biome_name then
+                            return
+                        end
+
+                        if biome_name == 'everness_coral_forest_deep_ocean' and rand:next(0, 100) < chance then
+                            --
+                            -- Coral Forest Deep Ocean House
+                            --
+
+                            local schem_pos = vector.new(s_pos.x, s_pos.y, s_pos.z)
+                            local water_source_positions = minetest.find_nodes_in_area(
+                                vector.new(s_pos.x - 5, s_pos.y, s_pos.z - 6),
+                                vector.new(s_pos.x + 5, s_pos.y + 17, s_pos.z + 6),
+                                { 'default:water_source' }
+                            )
+
+                            if #water_source_positions > (house_volume - house_volume / 3) then
+                                minetest.place_schematic_on_vmanip(
+                                    vm,
+                                    schem_pos,
+                                    house_schem,
+                                    rotation,
+                                    nil,
+                                    true,
+                                    'place_center_x, place_center_z'
+                                )
+
+                                minetest.log('action', '[Everness] Coral Forest Deep Ocean House was placed at ' .. schem_pos:to_string())
+
+                                already_placed = true
+                            end
+                        end
+                    end
+                end
+            end
+        end
+
+        vm:write_to_map(true)
+        minetest.fix_light(minp, maxp)
+    end
+end)

mapgen_crystal_forest_deep_ocean.lua

@@ -0,0 +1,279 @@
+--[[
+    Everness. Never ending discovery in Everness mapgen.
+    Copyright (C) 2023 SaKeL <juraj.vajda@gmail.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to juraj.vajda@gmail.com
+--]]
+
+--
+-- Register biomes
+--
+
+local y_max = Everness.settings.biomes.everness_crystal_forest_deep_ocean.y_max
+local y_min = Everness.settings.biomes.everness_crystal_forest_deep_ocean.y_min
+
+-- Coral Forest Ocean
+
+minetest.register_biome({
+    name = 'everness_crystal_forest_deep_ocean',
+    node_top = 'everness:crystal_forest_deep_ocean_sand',
+    depth_top = 1,
+    node_filler = 'everness:crystal_forest_deep_ocean_sand',
+    depth_filler = 3,
+    node_riverbed = 'everness:crystal_forest_deep_ocean_sand',
+    depth_riverbed = 2,
+    node_cave_liquid = 'default:water_source',
+    node_dungeon = 'everness:crystal_forest_deep_ocean_sandstone_block',
+    node_dungeon_alt = 'everness:crystal_forest_deep_ocean_sandstone_brick',
+    node_dungeon_stair = 'stairs:stair_crystal_forest_deep_ocean_sandstone_block',
+    y_max = y_max,
+    y_min = y_min,
+    heat_point = 35,
+    humidity_point = 50,
+})
+
+--
+-- Register decorations
+--
+
+minetest.register_decoration({
+    name = 'everness:crystal_forest_deep_ocean_coral_1',
+    deco_type = 'schematic',
+    place_on = { 'everness:crystal_forest_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    fill_ratio = 0.003,
+    biomes = { 'everness_crystal_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_crystal_forest_deep_ocean_coral_1.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:crystal_forest_deep_ocean_coral_2',
+    deco_type = 'schematic',
+    place_on = { 'everness:crystal_forest_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    fill_ratio = 0.003,
+    biomes = { 'everness_crystal_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_crystal_forest_deep_ocean_coral_2.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:crystal_forest_deep_ocean_coral_3',
+    deco_type = 'schematic',
+    place_on = { 'everness:crystal_forest_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    fill_ratio = 0.003,
+    biomes = { 'everness_crystal_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_crystal_forest_deep_ocean_coral_3.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:crystal_forest_deep_ocean_sand_with_crack',
+    deco_type = 'simple',
+    place_on = { 'everness:crystal_forest_deep_ocean_sand' },
+    place_offset_y = -1,
+    sidelen = 4,
+    fill_ratio = 0.002,
+    biomes = { 'everness_crystal_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    flags = 'force_placement',
+    decoration = { 'everness:crystal_forest_deep_ocean_sand_with_crack' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+})
+
+minetest.register_decoration({
+    name = 'everness:crystal_forest_deep_ocean_coral_plant_1',
+    deco_type = 'simple',
+    place_on = { 'everness:crystal_forest_deep_ocean_sand' },
+    place_offset_y = -1,
+    sidelen = 4,
+    noise_params = {
+        offset = 0,
+        scale = 0.02,
+        spread = { x = 200, y = 200, z = 200 },
+        seed = 329,
+        octaves = 3,
+        persist = 0.6
+    },
+    biomes = { 'everness_crystal_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    flags = 'force_placement',
+    decoration = { 'everness:crystal_forest_deep_ocean_coral_plant_1' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+})
+
+minetest.register_decoration({
+    name = 'everness:crystal_forest_deep_ocean_coral_plant_2',
+    deco_type = 'simple',
+    place_on = { 'everness:crystal_forest_deep_ocean_sand' },
+    place_offset_y = -1,
+    sidelen = 4,
+    noise_params = {
+        offset = -0.02,
+        scale = 0.04,
+        spread = { x = 200, y = 200, z = 200 },
+        seed = 436,
+        octaves = 3,
+        persist = 0.6
+    },
+    biomes = { 'everness_crystal_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    flags = 'force_placement',
+    decoration = { 'everness:crystal_forest_deep_ocean_coral_plant_2' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+})
+
+minetest.register_decoration({
+    name = 'everness:crystal_forest_deep_ocean_coral_plant_3',
+    deco_type = 'simple',
+    place_on = { 'everness:crystal_forest_deep_ocean_sand' },
+    place_offset_y = -1,
+    sidelen = 4,
+    noise_params = {
+        offset = -0.02,
+        scale = 0.04,
+        spread = { x = 200, y = 200, z = 200 },
+        seed = 19822,
+        octaves = 3,
+        persist = 0.6
+    },
+    biomes = { 'everness_crystal_forest_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    flags = 'force_placement',
+    decoration = { 'everness:crystal_forest_deep_ocean_coral_plant_3' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+})
+
+--
+-- On Generated
+--
+
+local c_water_source = minetest.get_content_id('default:water_source')
+local c_crystal_forest_deep_ocean_sand = minetest.get_content_id('everness:crystal_forest_deep_ocean_sand')
+
+-- Localize data buffer table outside the loop, to be re-used for all
+-- mapchunks, therefore minimising memory use.
+local data = {}
+local chance = 25
+local ruins_size = { x = 14, y = 12, z = 9 }
+local ruins_volume = ruins_size.x * ruins_size.z * ruins_size.y
+local ruins_schem = minetest.get_modpath('everness') .. '/schematics/everness_crystal_forest_deep_ocean_ruins.mts'
+
+minetest.register_on_generated(function(minp, maxp, blockseed)
+    local rand = PcgRandom(blockseed)
+    local vm, emin, emax = minetest.get_mapgen_object('voxelmanip')
+    local area = VoxelArea:new({ MinEdge = emin, MaxEdge = emax })
+    -- Get the content ID data from the voxelmanip in the form of a flat array.
+    -- Set the buffer parameter to use and reuse 'data' for this.
+    vm:get_data(data)
+
+    if y_min < maxp.y and maxp.y < y_max then
+        local already_placed = false
+        -- Process the content IDs in 'data'.
+        -- The most useful order is a ZYX loop because:
+        -- 1. This matches the order of the 3D noise flat array.
+        -- 2. This allows a simple +1 incrementing of the voxelmanip index along x
+        -- rows.
+        for z = minp.z, maxp.z do
+            if already_placed then
+                break
+            end
+
+            for y = minp.y, maxp.y do
+                if already_placed then
+                    break
+                end
+
+                for x = minp.x, maxp.x do
+                    if already_placed then
+                        break
+                    end
+
+                    -- Voxelmanip index for the flat array of content IDs.
+                    -- Initialise to first node in this x row.
+                    local vi = area:index(x, y, z)
+
+                    if data[vi + area.ystride] == c_water_source and data[vi] == c_crystal_forest_deep_ocean_sand then
+                        local s_pos = area:position(vi)
+                        local biome_data = minetest.get_biome_data(s_pos)
+
+                        if not biome_data then
+                            return
+                        end
+
+                        local biome_name = minetest.get_biome_name(biome_data.biome)
+
+                        if not biome_name then
+                            return
+                        end
+
+                        if biome_name == 'everness_crystal_forest_deep_ocean' and rand:next(0, 100) < chance then
+                            --
+                            -- Crystal Forest Deep Ocean Ruins
+                            --
+
+                            local schem_pos = vector.new(s_pos.x, s_pos.y, s_pos.z)
+                            local water_source_positions = minetest.find_nodes_in_area(
+                                vector.new(s_pos.x - (ruins_size.x / 2), s_pos.y, s_pos.z - (ruins_size.z / 2)),
+                                vector.new(s_pos.x + (ruins_size.x / 2), s_pos.y + ruins_size.y, s_pos.z + (ruins_size.z / 2)),
+                                { 'default:water_source' }
+                            )
+
+                            if #water_source_positions > (ruins_volume - ruins_volume / 3) then
+                                minetest.place_schematic_on_vmanip(
+                                    vm,
+                                    schem_pos,
+                                    ruins_schem,
+                                    'random',
+                                    nil,
+                                    true,
+                                    'place_center_x, place_center_z'
+                                )
+
+                                minetest.log('action', '[Everness] Crystal Forest Deep Ocean Ruins were placed at ' .. schem_pos:to_string())
+
+                                already_placed = true
+                            end
+                        end
+                    end
+                end
+            end
+        end
+
+        vm:write_to_map(true)
+        minetest.fix_light(minp, maxp)
+    end
+end)

mapgen_cursed_lands_deep_ocean.lua

@@ -0,0 +1,280 @@
+--[[
+    Everness. Never ending discovery in Everness mapgen.
+    Copyright (C) 2023 SaKeL <juraj.vajda@gmail.com>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to juraj.vajda@gmail.com
+--]]
+
+--
+-- Register biomes
+--
+
+local y_max = Everness.settings.biomes.everness_cursed_lands_deep_ocean.y_max
+local y_min = Everness.settings.biomes.everness_cursed_lands_deep_ocean.y_min
+
+-- Cursed Lands Deep Ocean
+
+minetest.register_biome({
+    name = 'everness_cursed_lands_deep_ocean',
+    node_top = 'everness:cursed_lands_deep_ocean_sand',
+    depth_top = 1,
+    node_filler = 'everness:cursed_lands_deep_ocean_sand',
+    depth_filler = 3,
+    node_riverbed = 'everness:cursed_lands_deep_ocean_sand',
+    depth_riverbed = 2,
+    node_cave_liquid = 'default:water_source',
+    node_dungeon = 'everness:cursed_lands_deep_ocean_sandstone_block',
+    node_dungeon_alt = 'everness:cursed_lands_deep_ocean_sandstone_brick',
+    node_dungeon_stair = 'stairs:stair_cursed_lands_deep_ocean_sandstone_block',
+    y_max = y_max,
+    y_min = y_min,
+    heat_point = 45,
+    humidity_point = 85,
+})
+
+--
+-- Register decorations
+--
+
+minetest.register_decoration({
+    name = 'everness:forsaken_lands_deep_ocean_coral_alcyonacea',
+    deco_type = 'schematic',
+    place_on = { 'everness:cursed_lands_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    fill_ratio = 0.002,
+    biomes = { 'everness_cursed_lands_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_forsaken_lands_deep_ocean_coral_alcyonacea.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:forsaken_lands_deep_ocean_coral_ostracod',
+    deco_type = 'schematic',
+    place_on = { 'everness:cursed_lands_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    fill_ratio = 0.002,
+    biomes = { 'everness_cursed_lands_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_forsaken_lands_deep_ocean_coral_ostracod.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:forsaken_lands_deep_ocean_coral_octocurse',
+    deco_type = 'schematic',
+    place_on = { 'everness:cursed_lands_deep_ocean_sand' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+    sidelen = 16,
+    fill_ratio = 0.002,
+    biomes = { 'everness_cursed_lands_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    schematic = minetest.get_modpath('everness') .. '/schematics/everness_forsaken_lands_deep_ocean_coral_octocurse.mts',
+    flags = 'place_center_x, place_center_z, force_placement',
+})
+
+minetest.register_decoration({
+    name = 'everness:cursed_lands_deep_ocean_mud',
+    deco_type = 'simple',
+    place_on = { 'everness:cursed_lands_deep_ocean_sand' },
+    place_offset_y = -1,
+    sidelen = 4,
+    fill_ratio = 0.002,
+    biomes = { 'everness_cursed_lands_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    flags = 'force_placement',
+    decoration = { 'everness:cursed_lands_deep_ocean_sand_with_crack' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+})
+
+minetest.register_decoration({
+    name = 'everness:cursed_lands_deep_ocean_plants_1',
+    deco_type = 'simple',
+    place_on = { 'everness:cursed_lands_deep_ocean_sand' },
+    place_offset_y = -1,
+    sidelen = 4,
+    noise_params = {
+        offset = 0,
+        scale = 0.02,
+        spread = { x = 200, y = 200, z = 200 },
+        seed = 329,
+        octaves = 3,
+        persist = 0.6
+    },
+    biomes = { 'everness_cursed_lands_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    flags = 'force_placement',
+    decoration = { 'everness:cursed_lands_deep_ocean_coral_plant_anemone' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+})
+
+minetest.register_decoration({
+    name = 'everness:cursed_lands_deep_ocean_plants_2',
+    deco_type = 'simple',
+    place_on = { 'everness:cursed_lands_deep_ocean_sand' },
+    place_offset_y = -1,
+    sidelen = 4,
+    noise_params = {
+        offset = -0.02,
+        scale = 0.04,
+        spread = { x = 200, y = 200, z = 200 },
+        seed = 436,
+        octaves = 3,
+        persist = 0.6
+    },
+    biomes = { 'everness_cursed_lands_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    flags = 'force_placement',
+    decoration = { 'everness:cursed_lands_deep_ocean_coral_plant_darkilluma' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+})
+
+minetest.register_decoration({
+    name = 'everness:cursed_lands_deep_ocean_plants_3',
+    deco_type = 'simple',
+    place_on = { 'everness:cursed_lands_deep_ocean_sand' },
+    place_offset_y = -1,
+    sidelen = 4,
+    noise_params = {
+        offset = -0.02,
+        scale = 0.04,
+        spread = { x = 200, y = 200, z = 200 },
+        seed = 19822,
+        octaves = 3,
+        persist = 0.6
+    },
+    biomes = { 'everness_cursed_lands_deep_ocean' },
+    y_max = y_max,
+    y_min = y_min,
+    flags = 'force_placement',
+    decoration = { 'everness:cursed_lands_deep_ocean_coral_plant_demon' },
+    spawn_by = 'default:water_source',
+    num_spawn_by = 8,
+})
+
+--
+-- On Generated
+--
+
+local c_water_source = minetest.get_content_id('default:water_source')
+local c_cursed_lands_deep_ocean_sand = minetest.get_content_id('everness:cursed_lands_deep_ocean_sand')
+
+-- Localize data buffer table outside the loop, to be re-used for all
+-- mapchunks, therefore minimising memory use.
+local data = {}
+local chance = 25
+
+local skull_size = { x = 10, y = 11, z = 11 }
+local skull_volume = skull_size.x * skull_size.z * skull_size.y
+local skull_schem = minetest.get_modpath('everness') .. '/schematics/everness_cursed_lands_deep_ocean_skull.mts'
+
+minetest.register_on_generated(function(minp, maxp, blockseed)
+    local rand = PcgRandom(blockseed)
+    local vm, emin, emax = minetest.get_mapgen_object('voxelmanip')
+    local area = VoxelArea:new({ MinEdge = emin, MaxEdge = emax })
+    -- Get the content ID data from the voxelmanip in the form of a flat array.
+    -- Set the buffer parameter to use and reuse 'data' for this.
+    vm:get_data(data)
+
+    if y_min < maxp.y and maxp.y < y_max then
+        local already_placed = false
+        -- Process the content IDs in 'data'.
+        -- The most useful order is a ZYX loop because:
+        -- 1. This matches the order of the 3D noise flat array.
+        -- 2. This allows a simple +1 incrementing of the voxelmanip index along x
+        -- rows.
+        for z = minp.z, maxp.z do
+            if already_placed then
+                break
+            end
+
+            for y = minp.y, maxp.y do
+                if already_placed then
+                    break
+                end
+
+                for x = minp.x, maxp.x do
+                    if already_placed then
+                        break
+                    end
+
+                    -- Voxelmanip index for the flat array of content IDs.
+                    -- Initialise to first node in this x row.
+                    local vi = area:index(x, y, z)
+
+                    if data[vi + area.ystride] == c_water_source and data[vi] == c_cursed_lands_deep_ocean_sand then
+                        local s_pos = area:position(vi)
+                        local biome_data = minetest.get_biome_data(s_pos)
+
+                        if not biome_data then
+                            return
+                        end
+
+                        local biome_name = minetest.get_biome_name(biome_data.biome)
+
+                        if not biome_name then
+                            return
+                        end
+
+                        if biome_name == 'everness_cursed_lands_deep_ocean' and rand:next(0, 100) < chance then
+                            --
+                            -- Skull
+                            --
+
+                            local schem_pos = vector.new(s_pos.x, s_pos.y, s_pos.z)
+                            local water_source_positions = minetest.find_nodes_in_area(
+                                vector.new(s_pos.x - 5, s_pos.y, s_pos.z - 5),
+                                vector.new(s_pos.x + 5, s_pos.y + 11, s_pos.z + 5),
+                                { 'default:water_source' }
+                            )
+
+                            if #water_source_positions > skull_volume / 3 then
+                                minetest.place_schematic_on_vmanip(
+                                    vm,
+                                    schem_pos,
+                                    skull_schem,
+                                    'random',
+                                    nil,
+                                    true,
+                                    'place_center_x, place_center_z'
+                                )
+
+                                minetest.log('action', '[Everness] Cursed Lands Deep Ocean Skull was placed at ' .. schem_pos:to_string())
+
+                                already_placed = true
+                            end
+                        end
+                    end
+                end
+            end
+        end
+
+        vm:write_to_map(true)
+        minetest.fix_light(minp, maxp)
+    end
+end)