Merge pull request 'Playable nether' (#2836) from nether_mg_settings into master

Reviewed-on: https://git.minetest.land/MineClone2/MineClone2/pulls/2836

mods/CORE/mcl_init/init.lua

@@ -138,6 +138,7 @@ mcl_vars.mg_nether_min = -29067 -- Carefully chosen to be at a mapchunk border
 mcl_vars.mg_nether_max = mcl_vars.mg_nether_min + 128
 mcl_vars.mg_bedrock_nether_bottom_min = mcl_vars.mg_nether_min
 mcl_vars.mg_bedrock_nether_top_max = mcl_vars.mg_nether_max
+mcl_vars.mg_nether_deco_max = mcl_vars.mg_nether_max -11 -- this is so ceiling decorations don't spill into other biomes as bedrock generation calls minetest.generate_decorations to put netherrack under the bedrock
 if not superflat then
 	mcl_vars.mg_bedrock_nether_bottom_max = mcl_vars.mg_bedrock_nether_bottom_min + 4
 	mcl_vars.mg_bedrock_nether_top_min = mcl_vars.mg_bedrock_nether_top_max - 4

mods/CORE/mcl_util/init.lua

@@ -23,6 +23,7 @@ function table.update_nil(t, ...)
 end
 
 function mcl_util.file_exists(name)
+	if type(name) ~= "string" then return end
 	local f = io.open(name)
 	if not f then
 		return false

mods/ENTITIES/mcl_mobs/spawning.lua

@@ -672,8 +672,8 @@ if mobs_spawn then
 						return
 					end
 				end
-				if minetest.registered_entities[mob_def.name].can_spawn and not minetest.registered_entities[mob_def.name].can_spawn(pos) then
-					minetest.log("warning","[mcl_mobs] mob "..mob_def.name.." refused to spawn at "..minetest.pos_to_string(vector.round(pos)))
+				if minetest.registered_entities[mob_def.name].can_spawn and not minetest.registered_entities[mob_def.name].can_spawn(spawning_position) then
+					minetest.log("warning","[mcl_mobs] mob "..mob_def.name.." refused to spawn at "..minetest.pos_to_string(vector.round(spawning_position)))
 					return
 				end
 				--everything is correct, spawn mob

mods/ENTITIES/mobs_mc/init.lua

@@ -154,3 +154,5 @@ dofile(path .. "/glow_squid.lua")
 
 dofile(path .. "/piglin.lua")
 dofile(path .. "/hoglin+zoglin.lua")
+
+dofile(path .. "/strider.lua")

mods/ENTITIES/mobs_mc/skeleton_wither.lua

@@ -99,6 +99,7 @@ mcl_mobs:register_mob("mobs_mc:witherskeleton", {
 })
 
 --spawn
+--[[]
 mcl_mobs:spawn_specific(
 "mobs_mc:witherskeleton",
 "nether",
@@ -114,6 +115,6 @@ mcl_mobs:spawn_specific(
 5,
 mcl_vars.mg_nether_min,
 mcl_vars.mg_nether_max)
-
+--]]
 -- spawn eggs
 mcl_mobs:register_egg("mobs_mc:witherskeleton", S("Wither Skeleton"), "#141414", "#474d4d", 0)

mods/ENTITIES/mobs_mc/strider.lua

@@ -0,0 +1,249 @@
+--MCmobs v0.4
+--maikerumine
+--made for MC like Survival game
+--License for code WTFPL and otherwise stated in readmes
+
+local S = minetest.get_translator("mobs_mc")
+
+--###################
+--################### STRIDER
+--###################
+
+
+local strider = {
+	type = "animal",
+	passive = true,
+	spawn_class = "passive",
+	hp_min = 20,
+	hp_max = 20,
+	xp_min = 9,
+	xp_max = 9,
+	armor = {fleshy = 90},
+	attack_type = "dogfight",
+	damage = 2,
+	reach = 2,
+	collisionbox = {-.6, -0.01, -.6, .6, 1.94, .6},
+	visual = "mesh",
+	mesh = "extra_mobs_strider.b3d",
+	textures = { {
+		"extra_mobs_strider.png",
+	} },
+	visual_size = {x=3, y=3},
+	sounds = {
+	},
+	jump = true,
+	makes_footstep_sound = true,
+	walk_velocity = 2,
+	run_velocity = 4,
+	runaway = true,
+	drops = {
+		{name = "mcl_mobsitems:string",
+		chance = 1,
+		min = 2,
+		max = 5,},
+	},
+	animation = {
+		stand_speed = 15,
+		walk_speed = 15,
+		run_speed = 30,
+		stand_start = 5,
+		stand_end = 5,
+		walk_start = 1,
+		walk_end = 20,
+	},
+	lava_damage = 0,
+	fire_damage = 0,
+	light_damage = 0,
+	water_damage = 5,
+	fear_height = 4,
+	view_range = 16,
+	fire_resistant = true,
+	floats_on_lava = 1,
+	floats = 0,
+	can_spawn = function(pos)
+		local l = minetest.find_node_near(pos,2,{"mcl_nether:nether_lava_source","mcl_nether:nether_lava_flowing"})
+		return l ~= nil
+	end,
+	do_custom = function(self, dtime)
+
+		if minetest.find_node_near(self.object:get_pos(), 2, {"mcl_core:lava_source","mcl_core:lava_flowing","mcl_nether:nether_lava_source","mcl_nether:nether_lava_flowing"}) then
+			self.walk_velocity = 2
+			self.run_velocity = 4
+			self.base_texture[1] = "extra_mobs_strider.png"
+			self.shaking = false
+		else
+			self.base_texture[1] = "extra_mobs_strider_cold.png"
+			self.walk_velocity = .5
+			self.run_velocity = 1
+			self.shaking = true
+		end
+
+		self.object:set_properties({textures=self.base_texture, shaking=self.shaking, run_velocity=self.run_velocity, walk_velocity=self.walk_velocity})
+
+		-- set needed values if not already present
+		if not self.v2 then
+			self.v2 = 0
+			self.max_speed_forward = 8
+			self.max_speed_reverse = 4
+			self.accel = 2
+			self.terrain_type = 3
+			self.driver_attach_at = {x = 0, y = 5.5, z = -1.75}
+			self.driver_eye_offset = {x = 0, y = 10, z = 0}
+			self.driver_scale = {x = 1/self.visual_size.x, y = 1/self.visual_size.y}
+		end
+
+		-- if driver present allow control of horse
+		if self.driver then
+			local pos = self.object:get_pos()
+			local v = self.object:get_velocity()
+			self.object:set_velocity(vector.new(v.x,0,v.z))
+			mcl_mobs.drive(self, "walk", "stand", false, dtime)
+			local l = minetest.find_node_near(pos,2,{"group:lava"})
+			if l then self.object:set_pos(vector.new(pos.x,l.y+0.5,pos.z)) end
+			return false -- skip rest of mob functions
+		end
+
+		return true
+	end,
+
+	on_die = function(self, pos)
+
+		-- drop saddle when horse is killed while riding
+		-- also detach from horse properly
+		if self.driver then
+			mcl_mobs.detach(self.driver, {x = 1, y = 0, z = 1})
+		end
+	end,
+
+	on_rightclick = function(self, clicker)
+		if not clicker or not clicker:is_player() then
+			return
+		end
+
+		local wielditem = clicker:get_wielded_item()
+
+		if wielditem:get_name() ~= "mcl_crimson:warped_fungus" then
+			if mcl_mobs:feed_tame(self, clicker, 1, true, true) then return end
+		end
+
+		if self.child then
+			return
+		end
+
+		local item = clicker:get_wielded_item()
+		if item:get_name() == "mcl_mobitems:saddle" and self.saddle ~= "yes" then
+			self.base_texture = {
+				"extra_mobs_strider.png",
+				"mobs_mc_pig_saddle.png", -- saddle
+			}
+			self.object:set_properties({
+				textures = self.base_texture
+			})
+			self.saddle = "yes"
+			self.tamed = true
+			self.drops = {
+				{name = "mcl_mobitems:string",
+				chance = 1,
+				min = 1,
+				max = 3,},
+				{name = "mcl_mobitems:saddle",
+				chance = 1,
+				min = 1,
+				max = 1,},
+			}
+			if not minetest.is_creative_enabled(clicker:get_player_name()) then
+				wielditem:take_item(1)
+				clicker:get_inventory():set_stack("main", clicker:get_wield_index(), wielditem)
+			end
+			minetest.sound_play({name = "mcl_armor_equip_leather"}, {gain=0.5, max_hear_distance=8, pos=self.object:get_pos()}, true)
+			return
+		end
+
+		-- Mount or detach player
+		local name = clicker:get_player_name()
+		if self.driver and clicker == self.driver then
+			-- Detach if already attached
+			mcl_mobs.detach(clicker, {x=1, y=0, z=0})
+			return
+
+		elseif not self.driver and self.saddle == "yes" and wielditem:get_name() == "mcl_mobitems:warped_fungus_on_a_stick" then
+			-- Ride pig if it has a saddle and player uses a carrot on a stick
+
+			mcl_mobs.attach(self, clicker)
+
+			if not minetest.is_creative_enabled(clicker:get_player_name()) then
+
+				local inv = self.driver:get_inventory()
+				-- 26 uses
+				if wielditem:get_wear() > 63000 then
+					-- Break carrot on a stick
+					local def = wielditem:get_definition()
+					if def.sounds and def.sounds.breaks then
+						minetest.sound_play(def.sounds.breaks, {pos = clicker:get_pos(), max_hear_distance = 8, gain = 0.5}, true)
+					end
+					wielditem = {name = mobs_mc.items.fishing_rod, count = 1}
+				else
+					wielditem:add_wear(2521)
+				end
+				inv:set_stack("main",self.driver:get_wield_index(), wielditem)
+			end
+			return
+		end
+	end,
+}
+
+mcl_mobs:register_mob("mobs_mc:strider", strider)
+
+-- Baby strider.
+
+local baby_strider = table.copy(strider)
+baby_strider.collisionbox = {-.3, -0.01, -.3, .3, 0.94, .3}
+baby_strider.xp_min = 13
+baby_strider.xp_max = 13
+baby_strider.visual_size = {x=strider.visual_size.x/2, y=strider.visual_size.y/2}
+textures = { {
+	"extra_mobs_strider.png",
+	"extra_mobs_trans.png",
+} }
+baby_strider.walk_velocity = 1.2
+baby_strider.run_velocity = 2.4
+baby_strider.child = 1
+
+mcl_mobs:register_mob("mobs_mc:baby_strider", baby_strider)
+
+-- Regular spawning in the Nether
+
+mcl_mobs:spawn_setup({
+	name = "mobs_mc:strider",
+	type_of_spawning = "lava",
+	dimension = "nether",
+	biomes = {
+		"Nether",
+		"BasaltDelta",
+		"WarpedForest",
+		"CrimsonForest",
+		"SoulsandValley"
+	},
+	min_height = mcl_vars.mg_nether_min,
+	max_height = mcl_vars.mg_nether_max,
+	chance = 2000,
+})
+
+mcl_mobs:spawn_setup({
+	name = "mobs_mc:baby_strider",
+	type_of_spawning = "lava",
+	dimension = "nether",
+	biomes = {
+		"Nether",
+		"BasaltDelta",
+		"WarpedForest",
+		"CrimsonForest",
+		"SoulsandValley"
+	},
+	min_height = mcl_vars.mg_nether_min,
+	max_height = mcl_vars.mg_nether_max,
+	chance = 100,
+})
+
+-- spawn eggs
+mcl_mobs:register_egg("mobs_mc:strider", S("Strider"), "#000000", "#FF0000", 0)

mods/ENTITIES/mobs_mc/wither.lua

@@ -42,7 +42,7 @@ mcl_mobs:register_mob("mobs_mc:wither", {
 	fly = true,
 	makes_footstep_sound = false,
 	dogshoot_switch = 1,
-	dogshoot_count_max =1,
+	dogshoot_count_max = 1,
 	attack_animals = true,
 	can_despawn = false,
 	drops = {
@@ -79,9 +79,11 @@ mcl_mobs:register_mob("mobs_mc:wither", {
 	on_spawn = function(self)
 		minetest.sound_play("mobs_mc_wither_spawn", {object=self.object, gain=1.0, max_hear_distance=64})
 	end,
+
 })
 
 local mobs_griefing = minetest.settings:get_bool("mobs_griefing") ~= false
+local wither_rose_soil = { "group:grass_block", "mcl_core:dirt", "mcl_core:coarse_dirt", "mcl_nether:netherrack", "group:soul_block", "mcl_mud:mud", "mcl_moss:moss" }
 
 mcl_mobs:register_arrow("mobs_mc:wither_skull", {
 	visual = "sprite",
@@ -105,6 +107,18 @@ mcl_mobs:register_arrow("mobs_mc:wither_skull", {
 			damage_groups = {fleshy = 8},
 		}, nil)
 		mcl_mobs:boom(self, self.object:get_pos(), 1)
+		local l = mob:get_luaentity()
+		if l and l.health - 8 <= 0 then
+			local n = minetest.find_node_near(mob:get_pos(),2,wither_rose_soil)
+			if n then
+				local p = vector.offset(n,0,1,0)
+				if minetest.get_node(p).name == "air" then
+					if not ( mobs_griefing and minetest.place_node(p,{name="mcl_flowers:wither_rose"}) ) then
+						minetest.add_item(p,"mcl_flowers:wither_rose")
+					end
+				end
+			end
+		end
 	end,
 
 	-- node hit, explode

mods/ITEMS/mcl_flowers/init.lua

@@ -51,6 +51,9 @@ local on_place_flower = mcl_util.generate_on_place_plant_function(function(pos,
 	if (light_night and light_night >= 8) or (light_day and light_day >= minetest.LIGHT_MAX) then
 		light_ok = true
 	end
+	if itemstack:get_name() == "mcl_flowers:wither_rose" and (  minetest.get_item_group(soil_node.name, "grass_block") > 0 or soil_node.name == "mcl_core:dirt" or soil_node.name == "mcl_core:coarse_dirt" or soil_node.name == "mcl_mud:mud" or soil_node.name == "mcl_moss:moss" or soil_node.name == "mcl_nether:netherrack" or minetest.get_item_group(soil_node.name, "soul_block") > 0  ) then
+		return true,colorize
+	end
 	local is_flower = minetest.get_item_group(itemstack:get_name(), "flower") == 1
 	local ok = (soil_node.name == "mcl_core:dirt" or minetest.get_item_group(soil_node.name, "grass_block") == 1 or (not is_flower and (soil_node.name == "mcl_core:coarse_dirt" or soil_node.name == "mcl_core:podzol" or soil_node.name == "mcl_core:podzol_snow"))) and light_ok
 	return ok, colorize

mods/ITEMS/mcl_flowers/register.lua

@@ -59,4 +59,10 @@ mcl_flowers.register_simple_flower("blue_orchid", {
 	image = "mcl_flowers_blue_orchid.png",
 	selection_box = { -5/16, -0.5, -5/16, 5/16, 7/16, 5/16 },
 	potted = true,
-})
+})
+mcl_flowers.register_simple_flower("wither_rose", {
+	desc = S("Wither Rose"),
+	image = "mcl_flowers_wither_rose.png",
+	selection_box = { -3/16, -0.5, -3/16, 3/16, 6/16, 3/16 },
+	potted = true,
+})

mods/ITEMS/mcl_mobitems/init.lua

@@ -327,6 +327,17 @@ minetest.register_tool("mcl_mobitems:carrot_on_a_stick", {
 	_mcl_toollike_wield = true,
 })
 
+minetest.register_tool("mcl_mobitems:warped_fungus_on_a_stick", {
+	description = S("Warped fungus on a Stick"),
+	_tt_help = S("Lets you ride a strider"),
+	_doc_items_longdesc = S("A warped fungus on a stick can be used on saddled striders to ride them."),
+	_doc_items_usagehelp = S("Place it on a saddled strider to mount it. You can now ride the strider like a horse. Striders will also walk towards you when you just wield the carrot on a stick."),
+	wield_image = "mcl_mobitems_warped_fungus_on_a_stick.png^[transformFY^[transformR90",
+	inventory_image = "mcl_mobitems_warped_fungus_on_a_stick.png",
+	groups = { transport = 1 },
+	_mcl_toollike_wield = true,
+})
+
 minetest.register_craftitem("mcl_mobitems:nautilus_shell", {
 	description = S("Nautilus Shell"),
 	_tt_help = S("Used to craft a conduit"),
@@ -450,6 +461,22 @@ minetest.register_craft({
 	},
 })
 
+minetest.register_craft({
+	output = "mcl_mobitems:warped_fungus_on_a_stick",
+	recipe = {
+		{ "mcl_fishing:fishing_rod", "", },
+		{ "", "mcl_crimson:warped_fungus" },
+	},
+})
+
+minetest.register_craft({
+	output = "mcl_mobitems:warped_fungus_on_a_stick",
+	recipe = {
+		{ "","mcl_fishing:fishing_rod", },
+		{ "mcl_crimson:warped_fungus", "" },
+	},
+})
+
 minetest.register_craft({
 	type = "shapeless",
 	output = "mcl_mobitems:magma_cream",

mods/MAPGEN/mcl_biomes/init.lua

@@ -1531,10 +1531,40 @@ local function register_dimension_biomes()
 	--[[ REALMS ]]
 
 	--[[ THE NETHER ]]
+	-- the following decoration is a hack to cover exposed bedrock in netherrack - be careful not to put any ceiling decorations in a way that would apply to this (they would get generated regardless of biome)
+	minetest.register_decoration({
+		deco_type = "simple",
+		place_on = {"mcl_core:bedrock"},
+		sidelen = 16,
+		fill_ratio = 10,
+		y_min = mcl_vars.mg_lava_nether_max,
+		y_max = mcl_vars.mg_nether_max + 15,
+		height = 6,
+		max_height = 10,
+		decoration = "mcl_nether:netherrack",
+		flags = "all_ceilings",
+		param2 = 0,
+	})
+	minetest.register_decoration({
+		deco_type = "simple",
+		place_on = {"mcl_core:bedrock"},
+		sidelen = 16,
+		fill_ratio = 10,
+		y_min = mcl_vars.mg_nether_min - 10,
+		y_max = mcl_vars.mg_lava_nether_max,
+		height = 7,
+		max_height = 14,
+		decoration = "mcl_nether:netherrack",
+		flags = "all_floors,force_placement",
+		param2 = 0,
+	})
+
+
 	minetest.register_biome({
 		name = "Nether",
 		node_filler = "mcl_nether:netherrack",
 		node_stone = "mcl_nether:netherrack",
+		node_top = "mcl_nether:netherrack",
 		node_water = "air",
 		node_river_water = "air",
 		node_cave_liquid = "air",
@@ -1549,12 +1579,12 @@ local function register_dimension_biomes()
 
 	minetest.register_decoration({
 		deco_type = "simple",
-		place_on = {"mcl_nether:netherrack","mcl_nether:glowstone","mcl_blackstone:nether_gold","mcl_nether:quartz_ore","mcl_core:gravel","mcl_nether:soul_sand"},
+		place_on = {"mcl_nether:netherrack","mcl_nether:glowstone","mcl_blackstone:nether_gold","mcl_nether:quartz_ore","mcl_core:gravel","mcl_nether:soul_sand","mcl_nether:glowstone","mcl_nether:magma"},
 		sidelen = 16,
 		fill_ratio = 10,
 		biomes = { "Nether" },
-		y_min = -31000,
-		y_max = mcl_vars.mg_nether_max,
+		y_min = mcl_vars.mg_lava_nether_max,
+		y_max = mcl_vars.mg_nether_deco_max,
 		decoration = "mcl_nether:netherrack",
 		flags = "all_floors",
 		param2 = 0,
@@ -1569,7 +1599,6 @@ local function register_dimension_biomes()
 		node_river_water = "air",
 		node_cave_liquid = "air",
 		y_min = mcl_vars.mg_nether_min,
-
 		y_max = mcl_vars.mg_nether_max + 80,
 		heat_point = 77,
 		humidity_point = 33,
@@ -1578,12 +1607,12 @@ local function register_dimension_biomes()
 	})
 	minetest.register_decoration({
 		deco_type = "simple",
-		place_on = {"mcl_nether:netherrack","mcl_nether:glowstone"},
+		place_on = {"mcl_nether:netherrack","mcl_nether:glowstone","mcl_nether:magma"},
 		sidelen = 16,
 		fill_ratio = 10,
 		biomes = { "SoulsandValley" },
-		y_min = -31000,
-		y_max = mcl_vars.mg_nether_max,
+		y_min = mcl_vars.mg_lava_nether_max,
+		y_max = mcl_vars.mg_nether_deco_max,
 		decoration = "mcl_blackstone:soul_soil",
 		flags = "all_floors, all_ceilings",
 		param2 = 0,
@@ -1597,8 +1626,8 @@ local function register_dimension_biomes()
 		clust_num_ores = 225,
 		clust_size     = 15,
 		biomes = { "SoulsandValley" },
-		y_min = mcl_vars.mg_nether_min,
-		y_max = mcl_vars.mg_nether_max + 80,
+		y_min = mcl_vars.mg_lava_nether_max,
+		y_max = mcl_vars.mg_nether_deco_max,
 		noise_params = {
 			offset  = 0,
 			scale   = 1,
@@ -1619,7 +1648,6 @@ local function register_dimension_biomes()
 		node_river_water = "air",
 		node_cave_liquid = "air",
 		y_min = mcl_vars.mg_nether_min,
-
 		y_max = mcl_vars.mg_nether_max + 80,
 		heat_point = 60,
 		humidity_point = 47,
@@ -1628,12 +1656,12 @@ local function register_dimension_biomes()
 	})
 	minetest.register_decoration({
 		deco_type = "simple",
-		place_on = {"mcl_nether:netherrack","mcl_nether:glowstone","mcl_blackstone:nether_gold","mcl_nether:quartz_ore","mcl_core:gravel","mcl_nether:soul_sand"},
+		place_on = {"mcl_nether:netherrack","mcl_nether:glowstone","mcl_blackstone:nether_gold","mcl_nether:quartz_ore","mcl_core:gravel","mcl_nether:soul_sand","mcl_nether:magma","mcl_blackstone:blackstone"},
 		sidelen = 16,
 		fill_ratio = 10,
 		biomes = { "CrimsonForest" },
-		y_min = -31000,
-		y_max = mcl_vars.mg_nether_max,
+		y_min = mcl_vars.mg_lava_nether_max,
+		y_max = mcl_vars.mg_nether_deco_max,
 		decoration = "mcl_crimson:crimson_nylium",
 		flags = "all_floors",
 		param2 = 0,
@@ -1655,12 +1683,12 @@ local function register_dimension_biomes()
 	})
 	minetest.register_decoration({
 		deco_type = "simple",
-		place_on = {"mcl_nether:netherrack","mcl_nether:glowstone","mcl_blackstone:nether_gold","mcl_nether:quartz_ore","mcl_core:gravel","mcl_nether:soul_sand"},
+		place_on = {"mcl_nether:netherrack","mcl_nether:glowstone","mcl_blackstone:nether_gold","mcl_nether:quartz_ore","mcl_core:gravel","mcl_nether:soul_sand","mcl_nether:magma","mcl_blackstone:blackstone"},
 		sidelen = 16,
 		fill_ratio = 10,
 		biomes = { "WarpedForest" },
-		y_min = -31000,
-		y_max = mcl_vars.mg_nether_max,
+		y_min = mcl_vars.mg_lava_nether_max,
+		y_max = mcl_vars.mg_nether_deco_max,
 		decoration = "mcl_crimson:warped_nylium",
 		flags = "all_floors",
 		param2 = 0,
@@ -1681,16 +1709,29 @@ local function register_dimension_biomes()
 		_mcl_palette_index = 17,
 	})
 
+	minetest.register_decoration({
+		deco_type = "simple",
+		place_on = {"mcl_nether:netherrack","mcl_nether:glowstone","mcl_blackstone:nether_gold","mcl_nether:quartz_ore","mcl_core:gravel","mcl_nether:soul_sand","mcl_blackstone:blackstone","mcl_nether:magma"},
+		sidelen = 16,
+		fill_ratio = 10,
+		biomes = { "BasaltDelta" },
+		y_min = mcl_vars.mg_lava_nether_max,
+		y_max = mcl_vars.mg_nether_deco_max,
+		decoration = "mcl_blackstone:basalt",
+		flags = "all_floors",
+		param2 = 0,
+	})
+
 	minetest.register_ore({
 	ore_type       = "blob",
 	ore            = "mcl_blackstone:blackstone",
-	wherein        =  {"mcl_nether:netherrack","mcl_nether:glowstone","mcl_core:gravel","mcl_nether:soul_sand"},
+	wherein        =  {"mcl_nether:netherrack","mcl_nether:glowstone","mcl_core:gravel"},
 	clust_scarcity = 100,
 	clust_num_ores = 400,
 	clust_size     = 20,
 	biomes = { "BasaltDelta" },
-	y_min = mcl_vars.mg_nether_min,
-	y_max = mcl_vars.mg_nether_max + 80,
+	y_min = mcl_vars.mg_lava_nether_max,
+	y_max = mcl_vars.mg_nether_deco_max,
 	noise_params = {
 		offset  = 0,
 		scale   = 1,
@@ -1703,19 +1744,6 @@ local function register_dimension_biomes()
 	}
 	})
 
-	minetest.register_decoration({
-		deco_type = "simple",
-		place_on = {"mcl_nether:netherrack","mcl_nether:glowstone","mcl_blackstone:nether_gold","mcl_nether:quartz_ore","mcl_core:gravel","mcl_nether:soul_sand","mcl_blackstone:blackstone"},
-		sidelen = 16,
-		fill_ratio = 10,
-		biomes = { "BasaltDelta" },
-		y_min = -31000,
-		y_max = mcl_vars.mg_nether_max,
-		decoration = "mcl_blackstone:basalt",
-		flags = "all_floors",
-		param2 = 0,
-	})
-
 	--[[ THE END ]]
 	minetest.register_biome({
 		name = "End",
@@ -2342,7 +2370,7 @@ local function register_dimension_ores()
 		clust_scarcity  = 26 * 26 * 26,
 		clust_size      = 5,
 		y_min           = mcl_vars.mg_lava_nether_max + 10,
-		y_max           = mcl_vars.mg_nether_max,
+		y_max           = mcl_vars.mg_nether_max - 13,
 		noise_threshold = 0.0,
 		noise_params    = {
 			offset = 0.5,
@@ -2405,11 +2433,24 @@ local function register_dimension_ores()
 		ore_type       = "scatter",
 		ore            = "mcl_nether:nether_lava_source",
 		wherein         = {"mcl_nether:netherrack", "mcl_core:stone"},
+		clust_scarcity = 13500, --rare
+		clust_num_ores = 1,
+		clust_size     = 1,
+		y_min           = mcl_vars.mg_lava_nether_max,
+		y_max           = mcl_vars.mg_nether_max - 13,
+	})
+
+	local lava_biomes = {"BasaltDelta","Nether"}
+	minetest.register_ore({
+		ore_type       = "scatter",
+		ore            = "mcl_nether:nether_lava_source",
+		wherein        = {"mcl_nether:netherrack", "mcl_core:stone"},
 		clust_scarcity = 500,
 		clust_num_ores = 1,
 		clust_size     = 1,
-		y_min           = mcl_vars.mg_nether_min,
-		y_max           = mcl_vars.mg_lava_nether_max + 1,
+		biomes         = lava_biomes,
+		y_min          = mcl_vars.mg_nether_min,
+		y_max          = mcl_vars.mg_lava_nether_max + 1,
 	})
 
 	minetest.register_ore({
@@ -2419,6 +2460,7 @@ local function register_dimension_ores()
 		clust_scarcity = 1000,
 		clust_num_ores = 1,
 		clust_size     = 1,
+		biomes         = lava_biomes,
 		y_min           = mcl_vars.mg_lava_nether_max + 2,
 		y_max           = mcl_vars.mg_lava_nether_max + 12,
 	})
@@ -2430,6 +2472,7 @@ local function register_dimension_ores()
 		clust_scarcity = 2000,
 		clust_num_ores = 1,
 		clust_size     = 1,
+		biomes         = lava_biomes,
 		y_min           = mcl_vars.mg_lava_nether_max + 13,
 		y_max           = mcl_vars.mg_lava_nether_max + 48,
 	})
@@ -2440,8 +2483,9 @@ local function register_dimension_ores()
 		clust_scarcity = 3500,
 		clust_num_ores = 1,
 		clust_size     = 1,
+		biomes         = lava_biomes,
 		y_min           = mcl_vars.mg_lava_nether_max + 49,
-		y_max           = mcl_vars.mg_nether_max,
+		y_max           = mcl_vars.mg_nether_max - 13,
 	})
 
 	--[[ THE END ]]
@@ -4743,17 +4787,6 @@ local function register_dimension_decorations()
 		flags = "all_floors",
 		decoration = "mcl_mushrooms:mushroom_red",
 	})
-	minetest.register_decoration({
-		deco_type = "simple",
-		place_on = {"mcl_nether:soul_sand"},
-		sidelen = 16,
-		fill_ratio = 0.0032,
-		biomes = {"Nether","SoulsandValley"},
-		y_min = mcl_vars.mg_lava_nether_max + 1,
-		y_max = mcl_vars.mg_nether_max  - 1,
-		flags = "all_floors",
-		decoration = "mcl_nether:nether_wart",
-	})
 
 	-- WARPED FOREST
 	minetest.register_decoration({
@@ -4903,7 +4936,7 @@ local function register_dimension_decorations()
 		fill_ratio = 0.063,
 		biomes = {"CrimsonForest"},
 		y_min = mcl_vars.mg_lava_nether_max + 1,
-		y_max = mcl_vars.mg_nether_max -5,
+		y_max = mcl_vars.mg_nether_deco_max,
 		flags = "all_ceilings",
 		height = 2,
 		height_max = 8,
@@ -5000,6 +5033,7 @@ local function register_dimension_decorations()
 		},
 		biomes = {"BasaltDelta"},
 		y_min = mcl_vars.mg_lava_nether_max + 1,
+		y_max = mcl_vars.mg_nether_deco_max - 50,
 		flags = "all_floors, all ceilings",
 	})
 	minetest.register_decoration({
@@ -5020,6 +5054,19 @@ local function register_dimension_decorations()
 		},
 		biomes = {"BasaltDelta"},
 		y_min = mcl_vars.mg_lava_nether_max + 1,
+		y_max = mcl_vars.mg_nether_deco_max - 15,
+		flags = "all_floors, all ceilings",
+	})
+	minetest.register_decoration({
+		deco_type = "simple",
+		decoration = "mcl_blackstone:basalt",
+		place_on = {"mcl_blackstone:basalt","mcl_nether:netherrack","mcl_blackstone:blackstone"},
+		sidelen = 80,
+		height_max = 3,
+		fill_ratio = 0.4,
+		biomes = {"BasaltDelta"},
+		y_min = mcl_vars.mg_lava_nether_max + 1,
+		y_max = mcl_vars.mg_nether_deco_max - 15,
 		flags = "all_floors, all ceilings",
 	})
 	minetest.register_decoration({

mods/MAPGEN/mcl_mapgen_core/api.lua

@@ -15,7 +15,7 @@ minetest.register_on_generated(function(minp, maxp, blockseed)
 	local t1 = os.clock()
 	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, false
+		local lvm_used, shadow, deco_used, deco_table, ore_used, ore_table = false, false, false, false, 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}
@@ -28,16 +28,23 @@ minetest.register_on_generated(function(minp, maxp, blockseed)
 
 		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)
+				local lvm_used0, shadow0, deco, ore = 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
+				if deco and type(deco) == "table" then
+					deco_table = deco
+				elseif deco then
 					deco_used = true
 				end
+				if ore and type(ore) == "table" then
+					ore_table = ore
+				elseif deco then
+					ore_used = true
+				end
 			end
 		end
 
@@ -47,9 +54,16 @@ minetest.register_on_generated(function(minp, maxp, blockseed)
 			if param2 > 0 then
 				vm:set_param2_data(data2)
 			end
-			if deco_used then
+			if deco_table then
+				minetest.generate_decorations(vm,vector.new(minp.x,deco_table.min,minp.z),vector.new(maxp.x,deco_table.max,maxp.z))
+			elseif deco_used then
 				minetest.generate_decorations(vm)
 			end
+			if ore_table then
+				minetest.generate_ores(vm,vector.new(minp.x,ore_table.min,minp.z),vector.new(maxp.x,ore_table.max,maxp.z))
+			elseif ore_used then
+				minetest.generate_ores(vm)
+			end
 			vm:calc_lighting(p1, p2, shadow)
 			vm:write_to_map()
 			vm:update_liquids()

mods/MAPGEN/mcl_mapgen_core/init.lua

@@ -104,6 +104,25 @@ if superflat then
 	minetest.set_mapgen_setting("mgflat_spflags", "nolakes,nohills", true)
 end
 
+if mg_name == "v7" then
+	minetest.set_mapgen_setting("mgv7_cavern_threshold", "0.20", true)
+	mg_flags.caverns = true
+elseif mg_name == "valleys" then
+	minetest.set_mapgen_setting("mgvalleys_cavern_threshold", "0.20", true)
+	mg_flags.caverns = true
+elseif mg_name == "carpathian" then
+	minetest.set_mapgen_setting("mgcarpathian_cavern_threshold", "0.20", true)
+	mg_flags.caverns = true
+elseif mg_name == "v5" then
+	minetest.set_mapgen_setting("mgv5_cavern_threshold", "0.20", true)
+	mg_flags.caverns = true
+elseif mg_name == "fractal" then
+	minetest.set_mapgen_setting("mgfractal_cavern_threshold", "0.20", true)
+	mg_flags.caverns = true
+end
+
+
+
 local mg_flags_str = ""
 for k,v in pairs(mg_flags) do
 	if v == false then
@@ -313,8 +332,16 @@ local function world_structure(vm, data, data2, emin, emax, area, minp, maxp, bl
 			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, lvm_used
+	local deco = false
+	local ores = false
+	if minp.y >  mcl_vars.mg_nether_deco_max - 64 and maxp.y <  mcl_vars.mg_nether_max + 128 then
+		deco = {min=mcl_vars.mg_nether_deco_max,max=mcl_vars.mg_nether_max}
+	end
+	if minp.y <  mcl_vars.mg_nether_min + 10 or maxp.y <  mcl_vars.mg_nether_min + 60 then
+		deco = {min=mcl_vars.mg_nether_min - 10,max=mcl_vars.mg_nether_min + 20}
+		ores = {min=mcl_vars.mg_nether_min - 10,max=mcl_vars.mg_nether_min + 20}
+	end
+	return lvm_used, lvm_used, deco, ores
 end
 
 local function block_fixes(vm, data, data2, emin, emax, area, minp, maxp, blockseed)

mods/MAPGEN/mcl_nether_fortresses/init.lua

@@ -1,29 +1,212 @@
 local modname = minetest.get_current_modname()
+local S = minetest.get_translator(modname)
 local modpath = minetest.get_modpath(modname)
+local peaceful = minetest.settings:get_bool("only_peaceful_mobs", false)
 
 mcl_structures.register_structure("nether_outpost",{
-	place_on = {"mcl_nether:netherrack","mcl_crimson:crimson_nylium","mcl_crimson:warped_nylium","mcl_blackstone:basalt","mcl_blackstone:soul_soil"},
-	noise_params = {
-		offset = 0,
-		scale = 0.00022,
-		spread = {x = 250, y = 250, z = 250},
-		seed = 333,
-		octaves = 1,
-		persist = 0.0001,
-		flags = "absvalue",
-	},
+	place_on = {"mcl_nether:netherrack","mcl_crimson:crimson_nylium","mcl_crimson:warped_nylium","mcl_blackstone:basalt","mcl_blackstone:soul_soil","mcl_blackstone:blackstone","mcl_nether:soul_sand"},
+	fill_ratio = 0.01,
+	chunk_probability = 900,
 	flags = "all_floors",
 	biomes = {"Nether","SoulsandValley","WarpedForest","CrimsonForest","BasaltDelta"},
-	sidelen = 15,
+	sidelen = 24,
 	solid_ground = true,
 	make_foundation = true,
 	y_min = mcl_vars.mg_lava_nether_max - 1,
 	y_max = mcl_vars.mg_nether_max - 30,
-	filenames = { modpath.."/schematics/nether_outpost.mts" },
+	filenames = { modpath.."/schematics/mcl_nether_fortresses_nether_outpost.mts" },
 	y_offset = 0,
 	after_place = function(pos)
 		local sp = minetest.find_nodes_in_area(pos,vector.offset(pos,0,20,0),{"mcl_mobspawners:spawner"})
 		if not sp[1] then return end
-		mcl_mobspawners.setup_spawner(sp[1], "mobs_mc:blaze", 0, minetest.LIGHT_MAX+1, 10, 3, -1)
+		mcl_mobspawners.setup_spawner(sp[1], "mobs_mc:blaze", 0, minetest.LIGHT_MAX+1, 10, 8, 0)
 	end
 })
+local nbridges = {
+		modpath.."/schematics/mcl_nether_fortresses_nether_bridge_1.mts",
+		modpath.."/schematics/mcl_nether_fortresses_nether_bridge_2.mts",
+		modpath.."/schematics/mcl_nether_fortresses_nether_bridge_3.mts",
+		modpath.."/schematics/mcl_nether_fortresses_nether_bridge_4.mts",
+}
+mcl_structures.register_structure("nether_bridge",{
+	place_on = {"mcl_nether:nether_lava_source","mcl_nether:netherrack","mcl_crimson:crimson_nylium","mcl_crimson:warped_nylium","mcl_blackstone:basalt","mcl_blackstone:soul_soil","mcl_blackstone:blackstone","mcl_nether:soul_sand","mcl_core:bedrock"},
+	fill_ratio = 0.01,
+	chunk_probability = 500,
+	flags = "all_floors",
+	sidelen = 38,
+	solid_ground = false,
+	make_foundation = false,
+	y_min = mcl_vars.mg_nether_min - 4,
+	y_max = mcl_vars.mg_lava_nether_max - 20,
+	filenames = nbridges,
+	y_offset = function(pr) return pr:next(15,20) end,
+	after_place = function(pos,def,pr)
+		local p1 = vector.offset(pos,-14,0,-14)
+		local p2 = vector.offset(pos,14,24,14)
+		mcl_structures.spawn_mobs("mobs_mc:witherskeleton",{"mcl_blackstone:blackstone_chiseled_polished"},p1,p2,pr,5)
+	end
+})
+
+mcl_structures.register_structure("nether_outpost_with_bridges",{
+	place_on = {"mcl_nether:netherrack","mcl_crimson:crimson_nylium","mcl_crimson:warped_nylium","mcl_blackstone:basalt","mcl_blackstone:soul_soil","mcl_blackstone:blackstone","mcl_nether:soul_sand","mcl_nether:nether_lava_source"},
+	fill_ratio = 0.01,
+	chunk_probability = 1300,
+	flags = "all_floors",
+	biomes = {"Nether","SoulsandValley","WarpedForest","CrimsonForest","BasaltDelta"},
+	sidelen = 24,
+	solid_ground = true,
+	make_foundation = true,
+	y_min = mcl_vars.mg_lava_nether_max - 1,
+	y_max = mcl_vars.mg_nether_max - 30,
+	filenames = { modpath.."/schematics/mcl_nether_fortresses_nether_outpost.mts" },
+	daughters = {{
+		files = { nbridges[1] },
+			pos = vector.new(0,-2,-24),
+			rot = 180,
+		},
+		{
+		files = { nbridges[1] },
+			pos = vector.new(0,-2,24),
+			rot = 0,
+		},
+		{
+		files = { nbridges[1] },
+			pos = vector.new(-24,-2,0),
+			rot = 270,
+		},
+		{
+		files = { nbridges[1] },
+			pos = vector.new(24,-2,0),
+			rot = 90,
+		},
+	},
+	after_place = function(pos,def,pr)
+		local sp = minetest.find_nodes_in_area(pos,vector.offset(pos,0,20,0),{"mcl_mobspawners:spawner"})
+		if not sp[1] then return end
+		mcl_mobspawners.setup_spawner(sp[1], "mobs_mc:blaze", 0, minetest.LIGHT_MAX+1, 10, 8, 0)
+
+		local legs = minetest.find_nodes_in_area(vector.offset(pos,-45,-2,-45),vector.offset(pos,45,0,45), "mcl_nether:nether_brick")
+		local bricks = {}
+		for _,leg in pairs(legs) do
+			while minetest.get_item_group(mcl_vars.get_node(vector.offset(leg,0,-1,0), true, 333333).name, "solid") == 0 do
+				leg = vector.offset(leg,0,-1,0)
+				table.insert(bricks,leg)
+			end
+		end
+		minetest.bulk_set_node(bricks, {name = "mcl_nether:nether_brick", param2 = 2})
+
+		local p1 = vector.offset(pos,-45,13,-45)
+		local p2 = vector.offset(pos,45,13,45)
+		mcl_structures.spawn_mobs("mobs_mc:witherskeleton",{"mcl_blackstone:blackstone_chiseled_polished"},p1,p2,pr,5)
+	end
+},true)
+
+mcl_structures.register_structure_spawn({
+	name = "mobs_mc:witherskeleton",
+	y_min = mcl_vars.mg_lava_nether_max,
+	y_max = mcl_vars.mg_nether_max,
+	chance = 15,
+	interval = 60,
+	limit = 4,
+	spawnon = { "mcl_blackstone:blackstone_chiseled_polished" },
+})
+
+mcl_structures.register_structure("nether_bulwark",{
+	place_on = {"mcl_nether:netherrack","mcl_crimson:crimson_nylium","mcl_crimson:warped_nylium","mcl_blackstone:basalt","mcl_blackstone:soul_soil","mcl_blackstone:blackstone","mcl_nether:soul_sand"},
+	fill_ratio = 0.01,
+	chunk_probability = 900,
+	flags = "all_floors",
+	biomes = {"Nether","SoulsandValley","WarpedForest","CrimsonForest"},
+	sidelen = 36,
+	solid_ground = true,
+	make_foundation = true,
+	y_min = mcl_vars.mg_lava_nether_max - 1,
+	y_max = mcl_vars.mg_nether_max - 30,
+	filenames = {
+		modpath.."/schematics/mcl_nether_fortresses_nether_bulwark_1.mts",
+		modpath.."/schematics/mcl_nether_fortresses_nether_bulwark_2.mts",
+		modpath.."/schematics/mcl_nether_fortresses_nether_bulwark_3.mts",
+		modpath.."/schematics/mcl_nether_fortresses_nether_bulwark_4.mts",
+	},
+	daughters = {{
+			files = {
+				modpath.."/schematics/mcl_nether_fortresses_nether_bulwark_interior_1.mts",
+				modpath.."/schematics/mcl_nether_fortresses_nether_bulwark_interior_2.mts",
+				modpath.."/schematics/mcl_nether_fortresses_nether_bulwark_interior_3.mts",
+				modpath.."/schematics/mcl_nether_fortresses_nether_bulwark_interior_4.mts",
+			},
+			pos = vector.new(0,0,0),
+		},
+	},
+	y_offset = 0,
+	construct_nodes = {"group:wall"},
+	after_place = function(pos,def,pr)
+		local p1 = vector.offset(pos,-14,0,-14)
+		local p2 = vector.offset(pos,14,24,14)
+		mcl_structures.spawn_mobs("mobs_mc:piglin",{"mcl_blackstone:blackstone_brick_polished","mcl_stairs:slab_blackstone_polished"},p1,p2,pr,5)
+		mcl_structures.spawn_mobs("mobs_mc:piglin_brute",{"mcl_blackstone:blackstone_brick_polished","mcl_stairs:slab_blackstone_polished"},p1,p2,pr)
+		mcl_structures.spawn_mobs("mobs_mc:hoglin",{"mcl_blackstone:nether_gold"},p1,p2,pr,4)
+	end,
+	loot = {
+		["mcl_chests:chest_small" ] ={
+		{
+			stacks_min = 1,
+			stacks_max = 2,
+			items = {
+				--{ itemstring = "FIXME:spectral_arrow", weight = 1, amount_min = 10, amount_max=28 },
+				{ itemstring = "mcl_blackstone:blackstone_gilded", weight = 1, amount_min = 8, amount_max=12 },
+				{ itemstring = "mcl_core:iron_ingot", weight = 1, amount_min = 4, amount_max=9 },
+				{ itemstring = "mcl_core:gold_ingot", weight = 1, amount_min = 4, amount_max=9 },
+				{ itemstring = "mcl_core:crying_obsidian", weight = 1, amount_min = 3, amount_max=8 },
+				{ itemstring = "mcl_bows:crossbow", weight = 1, func = function(stack, pr)
+					mcl_enchanting.enchant_uniform_randomly(stack, {"soul_speed"}, pr)
+				end },
+				{ itemstring = "mcl_core:goldblock", weight = 1, },
+				{ itemstring = "mcl_tools:sword_gold", weight = 1, },
+				{ itemstring = "mcl_tools:axe_gold", weight = 1, func = function(stack, pr)mcl_enchanting.enchant_uniform_randomly(stack, {"soul_speed"}, pr) end },
+				{ itemstring = "mcl_armor:helmet_gold", weight = 1, func = function(stack, pr)mcl_enchanting.enchant_uniform_randomly(stack, {"soul_speed"}, pr) end },
+				{ itemstring = "mcl_armor:chestplate_gold", weight = 1, func = function(stack, pr)mcl_enchanting.enchant_uniform_randomly(stack, {"soul_speed"}, pr) end },
+				{ itemstring = "mcl_armor:leggings_gold", weight = 1, func = function(stack, pr)mcl_enchanting.enchant_uniform_randomly(stack, {"soul_speed"}, pr) end },
+				{ itemstring = "mcl_armor:boots_gold", weight = 1, func = function(stack, pr)mcl_enchanting.enchant_uniform_randomly(stack, {"soul_speed"}, pr) end },
+			}
+		},
+		{
+			stacks_min = 2,
+			stacks_max = 4,
+			items = {
+				{ itemstring = "mcl_bows:arrow", weight = 4, amount_min = 5, amount_max=17 },
+				{ itemstring = "mcl_mobitems:string", weight = 4, amount_min = 1, amount_max=6 },
+				{ itemstring = "mcl_core:iron_nugget", weight = 1, amount_min = 2, amount_max = 6 },
+				{ itemstring = "mcl_core:gold_nugget", weight = 1, amount_min = 2, amount_max = 6 },
+				{ itemstring = "mcl_mobitems:leather", weight = 1, amount_min = 1, amount_max = 3 },
+			}
+		},
+		{
+			stacks_min = 1,
+			stacks_max = 1,
+			items = {
+				{ itemstring = "mcl_compass:lodestone" },
+			}
+		}}
+	},
+})
+
+mcl_structures.register_structure_spawn({
+	name = "mobs_mc:piglin",
+	y_min = mcl_vars.mg_nether_min,
+	y_max = mcl_vars.mg_nether_max,
+	chance = 10,
+	interval = 60,
+	limit = 9,
+	spawnon = {"mcl_blackstone:blackstone_brick_polished","mcl_stairs:slab_blackstone_polished"},
+})
+
+mcl_structures.register_structure_spawn({
+	name = "mobs_mc:piglin_brute",
+	y_min = mcl_vars.mg_nether_min,
+	y_max = mcl_vars.mg_nether_max,
+	chance = 20,
+	interval = 60,
+	limit = 4,
+	spawnon = {"mcl_blackstone:blackstone_brick_polished","mcl_stairs:slab_blackstone_polished"},
+})

mods/MAPGEN/mcl_structures/api.lua

@@ -1,11 +1,18 @@
 mcl_structures.registered_structures = {}
 
+local place_queue = {}
 local disabled_structures = minetest.settings:get("mcl_disabled_structures")
 if disabled_structures then	disabled_structures = disabled_structures:split(",")
 else disabled_structures = {} end
 
+local peaceful = minetest.settings:get_bool("only_peaceful_mobs", false)
+local mob_cap_player = tonumber(minetest.settings:get("mcl_mob_cap_player")) or 75
+local mob_cap_animal = tonumber(minetest.settings:get("mcl_mob_cap_animal")) or 10
+
 local logging = minetest.settings:get_bool("mcl_logging_structures",true)
 
+local mg_name = minetest.get_mapgen_setting("mg_name")
+
 local rotations = {
 	"0",
 	"90",
@@ -26,6 +33,9 @@ local function ecb_place(blockpos, action, calls_remaining, param)
 end
 
 function mcl_structures.place_schematic(pos, schematic, rotation, replacements, force_placement, flags, after_placement_callback, pr, callback_param)
+	if type(schematic) ~= "table" and not mcl_util.file_exists(schematic) then
+		minetest.log("warning","[mcl_structures] schematic file "..tostring(schematic).." does not exist.")
+		return end
 	local s = loadstring(minetest.serialize_schematic(schematic, "lua", {lua_use_comments = false, lua_num_indent_spaces = 0}) .. " return schematic")()
 	if s and s.size then
 		local x, z = s.size.x, s.size.z
@@ -185,7 +195,7 @@ local function foundation(ground_p1,ground_p2,pos,sidelen)
 	local node_top = "mcl_core:dirt_with_grass" or minetest.get_node(ground_p1).name
 	local node_dust = nil
 
-	if minetest.get_mapgen_setting("mg_name") ~= "v6" then
+	if mg_name ~= "v6" then
 		local b = minetest.registered_biomes[minetest.get_biome_name(minetest.get_biome_data(pos).biome)]
 		--minetest.log(dump(b.node_top))
 		if b then
@@ -206,7 +216,33 @@ local function foundation(ground_p1,ground_p2,pos,sidelen)
 	minetest.bulk_set_node(stone,{name=node_stone})
 end
 
-function mcl_structures.place_structure(pos, def, pr, blockseed,rot)
+local function process_queue()
+	if #place_queue < 1 then return end
+	local s = table.remove(place_queue)
+	mcl_structures.place_schematic(s.pos, s.file, s.rot, nil, true, "place_center_x,place_center_z",function(s)
+		if s.after_place then
+			s.after_place(s.pos,s.def,s.pr)
+		end
+	end,s.pr)
+	minetest.after(0.5,process_queue)
+end
+
+function mcl_structures.spawn_mobs(mob,spawnon,p1,p2,pr,n)
+	n = n or 1
+	local sp = minetest.find_nodes_in_area_under_air(p1,p2,spawnon)
+	table.shuffle(sp)
+	for i,node in pairs(sp) do
+		if not peaceful and i <= n then
+			local pos = vector.offset(node,0,1,0)
+			if pos then
+				minetest.add_entity(pos,mob)
+			end
+		end
+		minetest.get_meta(node):set_string("spawnblock","yes")
+	end
+end
+
+function mcl_structures.place_structure(pos, def, pr, blockseed, rot)
 	if not def then	return end
 	if not rot then rot = "random" end
 	local log_enabled = logging and not def.terrain_feature
@@ -244,12 +280,31 @@ function mcl_structures.place_structure(pos, def, pr, blockseed,rot)
 		local r = pr:next(1,#def.filenames)
 		local file = def.filenames[r]
 		if file then
+			local rot = rotations[pr:next(1,#rotations)]
 			local ap = function(pos,def,pr,blockseed) end
-			if def.after_place then ap = def.after_place  end
 
-			mcl_structures.place_schematic(pp, file, rot, def.replacements, true, "place_center_x,place_center_z",function(p1, p2, size, rotation)
-				if def.loot then generate_loot(pp,def,pr,blockseed) end
-				if def.construct_nodes then construct_nodes(pp,def,pr,blockseed) end
+			if def.daughters then
+				ap = function(pos,def,pr,blockseed)
+					for _,d in pairs(def.daughters) do
+						local p = vector.add(pos,d.pos)
+						local rot = d.rot or 0
+						mcl_structures.place_schematic(p, d.files[pr:next(1,#d.files)], rot, nil, true, "place_center_x,place_center_z",function()
+							if def.loot then generate_loot(pp,def,pr,blockseed) end
+							if def.construct_nodes then construct_nodes(pp,def,pr,blockseed) end
+							if def.after_place then
+								def.after_place(pos,def,pr)
+							end
+						end,pr)
+					end
+				end
+			elseif def.after_place then
+				ap = def.after_place
+			end
+			mcl_structures.place_schematic(pp, file, rot,  def.replacements, true, "place_center_x,place_center_z",function(p1, p2, size, rotation)
+				if not def.daughters then
+					if def.loot then generate_loot(pp,def,pr,blockseed) end
+					if def.construct_nodes then construct_nodes(pp,def,pr,blockseed) end
+				end
 				return ap(pp,def,pr,blockseed,p1,p2,size,rotation)
 			end,pr)
 			if log_enabled then
@@ -313,6 +368,35 @@ function mcl_structures.register_structure(name,def,nospawn) --nospawn means it
 	mcl_structures.registered_structures[name] = def
 end
 
+local structure_spawns = {}
+function mcl_structures.register_structure_spawn(def)
+	--name,y_min,y_max,spawnon,biomes,chance,interval,limit
+	minetest.register_abm({
+		label = "Spawn "..def.name,
+		nodenames = def.spawnon,
+		min_y = def.y_min or -31000,
+		max_y = def.y_max or 31000,
+		interval = def.interval or 60,
+		chance = def.chance or 5,
+		action = function(pos, node, active_object_count, active_object_count_wider)
+			local limit = def.limit or 7
+			if active_object_count_wider > limit + mob_cap_animal then return end
+			if active_object_count_wider > mob_cap_player then return end
+			local p = vector.offset(pos,0,1,0)
+			if minetest.get_node(p).name ~= "air" then return end
+			if minetest.get_meta(pos):get_string("spawnblock") == "" then return end
+			if mg_name ~= "v6" and mg_name ~= "singlenode" and def.biomes then
+				if table.indexof(def.biomes,minetest.get_biome_name(minetest.get_biome_data(p).biome)) == -1 then
+					return
+				end
+			end
+			local mobdef = minetest.registered_entities[def.name]
+			if mobdef.can_spawn and not mobdef.can_spawn(p) then return end
+			minetest.add_entity(p,def.name)
+		end,
+	})
+end
+
 --lbm for secondary structures (structblock included in base structure)
 minetest.register_lbm({
 	name = "mcl_structures:struct_lbm",

mods/MAPGEN/mcl_structures/end_city.lua

@@ -2,14 +2,13 @@ local modname = minetest.get_current_modname()
 local S = minetest.get_translator(modname)
 local modpath = minetest.get_modpath(modname)
 
+local spawnon = {"mcl_end:purpur_block"}
+
 local function spawn_shulkers(pos,def,pr)
-	local nn = minetest.find_nodes_in_area_under_air(vector.offset(pos,-def.sidelen/2,-1,-def.sidelen/2),vector.offset(pos,def.sidelen/2,def.sidelen,def.sidelen/2),{"mcl_end:purpur_block"})
-	if nn and #nn > 0 then
-		table.shuffle(nn)
-		for i = 1,pr:next(1,math.min(6,#nn)) do
-			minetest.add_entity(vector.offset(nn[i],0,0.5,0),"mobs_mc:shulker")
-		end
-	end
+	local p1 = vector.offset(pos,-def.sidelen/2,-1,-def.sidelen/2)
+	local p2 = vector.offset(pos,def.sidelen/2,def.sidelen,def.sidelen/2)
+	mcl_structures.spawn_mobs("mobs_mc:shulker",spawnon,p1,p2,pr,1)
+
 	local guard = minetest.find_node_near(pos,def.sidelen,{"mcl_itemframes:item_frame"})
 	if guard then
 		minetest.add_entity(vector.offset(guard,0,-1.5,0),"mobs_mc:shulker")
@@ -133,3 +132,13 @@ mcl_structures.register_structure("end_boat",{
 		}}
 	}
 })
+
+mcl_structures.register_structure_spawn({
+	name = "mobs_mc:shulker",
+	y_min = mcl_vars.mg_end_min,
+	y_max = mcl_vars.mg_end_max,
+	chance = 10,
+	interval = 60,
+	limit = 6,
+	spawnon = spawnon,
+})

mods/MAPGEN/mcl_structures/igloo.lua

@@ -14,6 +14,24 @@ function mcl_structures.generate_igloo_top(pos, pr)
 	end), rotation
 end
 
+local function spawn_mobs(p1,p2,vi,zv)
+	local mc = minetest.find_nodes_in_area_under_air(p1,p2,{"mcl_core:stonebrickmossy"})
+	if #mc == 2 then
+		local vp = mc[1]
+		local zp = mc[2]
+		if not vi and zv and zv:get_pos() and vector.distance(mc[1],zv:get_pos()) < 2 then
+			vp = mc[2]
+		elseif not zv and vi and vi:get_pos() and vector.distance(mc[2],vi:get_pos()) < 2 then
+			zp = mc[1]
+		elseif zv and vi then
+			return
+		end
+		vi = minetest.add_entity(vector.offset(mc[1],0,1,0),"mobs_mc:villager")
+		zv = minetest.add_entity(vector.offset(mc[2],0,1,0),"mobs_mc:villager_zombie")
+		minetest.after(1,spawn_mobs,p1,p2,vi,zv)
+	end
+end
+
 function mcl_structures.generate_igloo_basement(pos, orientation, loot, pr)
 	-- TODO: Add monster eggs
 	local path = modpath.."/schematics/mcl_structures_igloo_basement.mts"
@@ -22,12 +40,7 @@ function mcl_structures.generate_igloo_basement(pos, orientation, loot, pr)
 		local p2 = vector.offset(pos,5,5,5)
 		mcl_structures.fill_chests(p1,p2,loot,pr)
 		mcl_structures.construct_nodes(p1,p2,{"mcl_brewing:stand_000","mcl_books:bookshelf"})
-		local mc = minetest.find_nodes_in_area_under_air(p1,p2,{"mcl_core:stonebrickmossy"})
-		if #mc == 2 then
-			table.shuffle(mc)
-			minetest.add_entity(vector.offset(mc[1],0,1,0),"mobs_mc:villager")
-			minetest.add_entity(vector.offset(mc[2],0,1,0),"mobs_mc:villager_zombie")
-		end
+		spawn_mobs(p1,p2)
 	end, pr)
 end
 

mods/MAPGEN/mcl_structures/pillager_outpost.lua

@@ -3,6 +3,8 @@ local S = minetest.get_translator(modname)
 local modpath = minetest.get_modpath(modname)
 local peaceful = minetest.settings:get_bool("only_peaceful_mobs", false)
 
+local spawnon = {"mcl_core:stripped_oak"}
+
 mcl_structures.register_structure("pillager_outpost",{
 	place_on = {"group:grass_block","group:dirt","mcl_core:dirt_with_grass","group:sand"},
 	fill_ratio = 0.01,
@@ -58,27 +60,28 @@ mcl_structures.register_structure("pillager_outpost",{
 	after_place = function(p,def,pr)
 		local p1 = vector.offset(p,-7,0,-7)
 		local p2 = vector.offset(p,7,14,7)
-		local spawnon = {"mcl_core:stripped_oak"}
-		local sp = minetest.find_nodes_in_area_under_air(p1,p2,spawnon)
-		for _,n in pairs(minetest.find_nodes_in_area(p1,p2,{"group:wall"})) do
-			local def = minetest.registered_nodes[minetest.get_node(n).name:gsub("_%d+$","")]
-			if def and def.on_construct then
-				def.on_construct(n)
-			end
-		end
-		if not peaceful then
-			if sp and #sp > 0 then
-				for i=1,5 do
-					local pos = vector.offset(sp[pr:next(1,#sp)],0,1,0)
-					if pos then
-						minetest.add_entity(pos,"mobs_mc:pillager")
-					end
-				end
-				local pos = vector.offset(sp[pr:next(1,#sp)],0,1,0)
-				if pos then
-					minetest.add_entity(pos,"mobs_mc:evoker")
-				end
-			end
-		end
+		mcl_structures.spawn_mobs("mobs_mc:evoker",spawnon,p1,p2,pr,1)
+		mcl_structures.spawn_mobs("mobs_mc:pillager",spawnon,p1,p2,pr,5)
+		mcl_structures.construct_nodes(p1,p2,{"group:wall"})
 	end
 })
+
+mcl_structures.register_structure_spawn({
+	name = "mobs_mc:pillager",
+	y_min = mcl_vars.mg_overworld_min,
+	y_max = mcl_vars.mg_overworld_max,
+	chance = 10,
+	interval = 60,
+	limit = 9,
+	spawnon = spawnon,
+})
+
+mcl_structures.register_structure_spawn({
+	name = "mobs_mc:evoker",
+	y_min = mcl_vars.mg_overworld_min,
+	y_max = mcl_vars.mg_overworld_max,
+	chance = 100,
+	interval = 60,
+	limit = 4,
+	spawnon = spawnon,
+})

mods/MAPGEN/mcl_structures/woodland_mansion.lua

@@ -3,6 +3,8 @@ local S = minetest.get_translator(modname)
 local modpath = minetest.get_modpath(modname)
 local peaceful = minetest.settings:get_bool("only_peaceful_mobs", false)
 
+local spawnon = {"mcl_deepslate:deepslate","mcl_core:birchwood","mcl_wool:red_carpet","mcl_wool:brown_carpet"}
+
 mcl_structures.register_structure("woodland_cabin",{
 	place_on = {"group:grass_block","group:dirt","mcl_core:dirt_with_grass"},
 	fill_ratio = 0.01,
@@ -20,28 +22,11 @@ mcl_structures.register_structure("woodland_cabin",{
 	},
 	construct_nodes = {"mcl_barrels:barrel_closed"},
 	after_place = function(p,def,pr)
-		local spawnon = {"mcl_deepslate:deepslate","mcl_core:birchwood","mcl_wool:red_carpet","mcl_wool:brown_carpet"}
 		local p1=vector.offset(p,-def.sidelen,-1,-def.sidelen)
 		local p2=vector.offset(p,def.sidelen,def.sidelen,def.sidelen)
-		local sp = minetest.find_nodes_in_area_under_air(p1,p2,spawnon)
-		if not peaceful then
-			if sp and #sp > 0 then
-				for i=1,5 do
-					local pos = sp[pr:next(1,#sp)]
-					if pos then
-						minetest.add_entity(pos,"mobs_mc:vindicator")
-					end
-				end
-				local pos = sp[pr:next(1,#sp)]
-				if pos then
-					minetest.add_entity(pos,"mobs_mc:evoker")
-				end
-			end
-		end
-		local parrot = minetest.find_node_near(p,25,{"mcl_heads:wither_skeleton"})
-		if parrot then
-			minetest.add_entity(parrot,"mobs_mc:parrot")
-		end
+		mcl_structures.spawn_mobs("mobs_mc:vindicator",spawnon,p1,p2,pr,5)
+		mcl_structures.spawn_mobs("mobs_mc:evoker",spawnon,p1,p2,pr,1)
+		mcl_structures.spawn_mobs("mobs_mc:parrot",{"mcl_heads:wither_skeleton"},p1,p2,pr,1)
 	end,
 	loot = {
 		["mcl_chests:chest_small" ] ={{
@@ -82,3 +67,23 @@ mcl_structures.register_structure("woodland_cabin",{
 		}}
 	}
 })
+
+mcl_structures.register_structure_spawn({
+	name = "mobs_mc:vindicator",
+	y_min = mcl_vars.mg_overworld_min,
+	y_max = mcl_vars.mg_overworld_max,
+	chance = 10,
+	interval = 60,
+	limit = 6,
+	spawnon = spawnon,
+})
+
+mcl_structures.register_structure_spawn({
+	name = "mobs_mc:evoker",
+	y_min = mcl_vars.mg_overworld_min,
+	y_max = mcl_vars.mg_overworld_max,
+	chance = 50,
+	interval = 60,
+	limit = 6,
+	spawnon = spawnon,
+})