Merge pull request 'Use MC 1.18+ light levels to control mob spawning' (#3946) from spawn_lighting into master

Reviewed-on: MineClone2/MineClone2#3946
Reviewed-by: the-real-herowl <the-real-herowl@noreply.git.minetest.land>

mods/ENTITIES/mcl_mobs/init.lua

@@ -287,6 +287,7 @@ function mcl_mobs.register_mob(name, def)
 		spawn_in_group_min = def.spawn_in_group_min,
 		noyaw = def.noyaw or false,
 		particlespawners = def.particlespawners,
+		spawn_check = def.spawn_check,
 		-- End of MCL2 extensions
 		on_spawn = def.on_spawn,
 		on_blast = def.on_blast or function(self,damage)

mods/ENTITIES/mcl_mobs/spawning.lua

@@ -2,6 +2,13 @@
 local math, vector, minetest, mcl_mobs = math, vector, minetest, mcl_mobs
 local mob_class = mcl_mobs.mob_class
 
+local modern_lighting = minetest.settings:get_bool("mcl_mobs_modern_lighting", true)
+local nether_threshold = tonumber(minetest.settings:get("mcl_mobs_nether_threshold")) or 11
+local end_threshold = tonumber(minetest.settings:get("mcl_mobs_end_threshold")) or 0
+local overworld_threshold = tonumber(minetest.settings:get("mcl_mobs_overworld_threshold")) or 0
+local overworld_sky_threshold = tonumber(minetest.settings:get("mcl_mobs_overworld_sky_threshold")) or 7
+local overworld_passive_threshold = tonumber(minetest.settings:get("mcl_mobs_overworld_passive_threshold")) or 7
+
 local get_node                     = minetest.get_node
 local get_item_group               = minetest.get_item_group
 local get_node_light               = minetest.get_node_light
@@ -709,9 +716,6 @@ local function spawn_check(pos, spawn_def)
 			and spawn_def.dimension == dimension
 			and biome_check(spawn_def.biomes, gotten_biome) then
 
-		--mcl_log("Level 1 spawn check passed")
-		--minetest.log("Mob: " .. mob_def.name)
-
 		if  (is_ground or spawn_def.type_of_spawning ~= "ground")
 				and (spawn_def.type_of_spawning ~= "ground" or not is_leaf)
 				and (not is_farm_animal(spawn_def.name) or is_grass)
@@ -721,20 +725,42 @@ local function spawn_check(pos, spawn_def)
 				and (spawn_def.check_position and spawn_def.check_position(pos) or spawn_def.check_position == nil)
 				and ( not spawn_protected or not minetest.is_protected(pos, "") ) then
 
-			--mcl_log("Level 2 spawn check passed")
-
 			local gotten_light = get_node_light(pos)
-			if gotten_light >= spawn_def.min_light and gotten_light <= spawn_def.max_light then
-				--mcl_log("Level 3 spawn check passed")
+
+			if modern_lighting then
+				local my_node = get_node(pos)
+				local sky_light = minetest.get_natural_light(pos)
+				local art_light = minetest.get_artificial_light(my_node.param1)
+
+				if dimension == "nether" then
+					if art_light <= nether_threshold then
+						return true
+					end
+				elseif dimension == "end" then
+					if art_light <= end_threshold then
+						return true
+					end
+				elseif dimension == "overworld" then
+					if mob_type == "monster" then
+						if mob_def.spawn_check then
+							return mob_def.spawn_check(pos, gotten_light, art_light, sky_light)
+						elseif art_light <= overworld_threshold and sky_light <= overworld_sky_threshold then
 							return true
-			else
-				--mcl_log("Spawn check level 3 failed")
 						end
 					else
-			--mcl_log("Spawn check level 2 failed")
+						if mob_def.spawn_check then
+							return mob_def.spawn_check(pos, gotten_light, art_light, sky_light)
+						elseif gotten_light > overworld_passive_threshold then
+							return true
+						end
+					end
 				end
 			else
-		--mcl_log("Spawn check level 1 failed")
+				if gotten_light >= spawn_def.min_light and gotten_light <= spawn_def.max_light then
+					return true
+				end
+			end
+		end
 	end
 	return false
 end

mods/ENTITIES/mobs_mc/bat.lua

@@ -2,6 +2,18 @@
 
 local S = minetest.get_translator("mobs_mc")
 
+local function spawn_check(pos, environmental_light, artificial_light, sky_light)
+	local date = os.date("*t")
+	local maxlight
+	if (date.month == 10 and date.day >= 20) or (date.month == 11 and date.day <= 3) then
+		maxlight = 6
+	else
+		maxlight = 3
+	end
+
+	return artificial_light <= maxlight
+end
+
 mcl_mobs.register_mob("mobs_mc:bat", {
 	description = S("Bat"),
 	type = "animal",
@@ -50,6 +62,7 @@ mcl_mobs.register_mob("mobs_mc:bat", {
 	jump = false,
 	fly = true,
 	makes_footstep_sound = false,
+	spawn_check = spawn_check,
 })
 
 

mods/ENTITIES/mobs_mc/blaze.lua

@@ -11,6 +11,9 @@ local mod_target = minetest.get_modpath("mcl_target")
 --################### BLAZE
 --###################
 
+local function spawn_check(pos, environmental_light, artificial_light, sky_light)
+	return artificial_light <= 11
+end
 
 mcl_mobs.register_mob("mobs_mc:blaze", {
 	description = S("Blaze"),
@@ -137,6 +140,7 @@ mcl_mobs.register_mob("mobs_mc:blaze", {
 			},
 		})
 	end,
+	spawn_check = spawn_check,
 })
 
 mcl_mobs:spawn_specific(

mods/ENTITIES/mobs_mc/piglin.lua

@@ -219,6 +219,10 @@ mcl_mobs.register_mob("mobs_mc:sword_piglin", sword_piglin)
 -- Zombified Piglin --
 
 
+local function spawn_check(pos, environmental_light, artificial_light, sky_light)
+	return artificial_light <= 11
+end
+
 local zombified_piglin = {
 	description = S("Zombie Piglin"),
 	-- type="animal", passive=false: This combination is needed for a neutral mob which becomes hostile, if attacked
@@ -256,6 +260,7 @@ local zombified_piglin = {
 	},
 	jump = true,
 	makes_footstep_sound = true,
+	spawn_check = spawn_check,
 	walk_velocity = .8,
 	run_velocity = 2.6,
 	pathfinding = 1,

mods/ENTITIES/mobs_mc/silverfish.lua

@@ -4,6 +4,10 @@
 
 local S = minetest.get_translator("mobs_mc")
 
+local function spawn_check(pos, environmental_light, artificial_light, sky_light)
+	return artificial_light <= 11
+end
+
 mcl_mobs.register_mob("mobs_mc:silverfish", {
 	description = S("Silverfish"),
 	type = "monster",
@@ -53,6 +57,7 @@ mcl_mobs.register_mob("mobs_mc:silverfish", {
 	view_range = 16,
 	attack_type = "dogfight",
 	damage = 1,
+	spawn_check = spawn_check,
 })
 
 mcl_mobs.register_egg("mobs_mc:silverfish", S("Silverfish"), "#6d6d6d", "#313131", 0)

mods/ENTITIES/mobs_mc/slime+magma_cube.lua

@@ -161,6 +161,16 @@ local spawn_children_on_die = function(child_mob, spawn_distance, eject_speed)
 	end
 end
 
+local function slime_spawn_check(pos, environmental_light, artificial_light, sky_light)
+	local maxlight = swamp_light_max
+
+	if is_slime_chunk(pos) then
+		maxlight = minetest.LIGHT_MAX + 1
+	end
+
+	return artificial_light <= maxlight
+end
+
 -- Slime
 local slime_big = {
 	description = S("Slime"),
@@ -213,6 +223,7 @@ local slime_big = {
 	spawn_small_alternative = "mobs_mc:slime_small",
 	on_die = spawn_children_on_die("mobs_mc:slime_small", 1.0, 1.5),
 	use_texture_alpha = true,
+	spawn_check = slime_spawn_check,
 }
 mcl_mobs.register_mob("mobs_mc:slime_big", slime_big)
 

settingtypes.txt

@@ -194,6 +194,19 @@ mcl_mob_active_range (Active mob range) int 48 0 256
 # Zombie siege raid (default:false)
 mcl_raids_zombie_siege (Zombie siege raid) bool false
 
+# Use MC 1.18+ light levels to control monster spawning.
+# Disable to use older mob specific light levels.
+mcl_mobs_modern_lighting (Use MC 1.18+ light rules for spawning) bool true
+
+# These only take effect if mcl_mobs_modern_lighting is enabled
+# Light levels greater than these block mobs spawning
+# See https://minecraft.fandom.com/wiki/Light#Internal_light_level
+mcl_mobs_nether_threshold (Artificial light threshold to stop spawns in the Nether) int 11 0 14
+mcl_mobs_end_threshold (Artificial light threshold to stop spawns in the End) int 0 0 14
+mcl_mobs_overworld_threshold (Artificial light threshold to stop monster spawns in the Overworld) int 0 0 14
+mcl_mobs_overworld_sky_threshold (Skylight threshold to stop monster spawns in the Overworld) int 7 0 14
+mcl_mobs_overworld_passive_threshold  (Combined light threshold to stop animal and npc spawns in the Overworld) int 7 0 14
+
 [Audio]
 # Enable flame sound.
 flame_sound (Flame sound) bool true