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MineClone2/mods/ENTITIES/mcl_mobs/spawning.lua

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Lua

--lua locals
local get_node = minetest.get_node
local get_item_group = minetest.get_item_group
local get_node_light = minetest.get_node_light
local find_nodes_in_area_under_air = minetest.find_nodes_in_area_under_air
local get_biome_name = minetest.get_biome_name
local get_objects_inside_radius = minetest.get_objects_inside_radius
local get_connected_players = minetest.get_connected_players
local minetest_get_perlin = minetest.get_perlin
local math_random = math.random
local math_floor = math.floor
local math_ceil = math.ceil
local math_cos = math.cos
local math_sin = math.sin
local math_round = function(x) return (x > 0) and math_floor(x + 0.5) or math_ceil(x - 0.5) end
--local vector_distance = vector.distance
local vector_new = vector.new
local vector_floor = vector.floor
local table_copy = table.copy
local table_remove = table.remove
local pairs = pairs
-- range for mob count
local aoc_range = 32
--do mobs spawn?
local mobs_spawn = minetest.settings:get_bool("mobs_spawn", true) ~= false
local noise_params = {
offset = 0,
scale = 3,
spread = {
x = 301,
y = 50,
z = 304,
},
seed = 100,
octaves = 3,
persistence = 0.5,
}
-- THIS IS THE BIG LIST OF ALL BIOMES - used for programming/updating mobs
-- Also used for missing parameter
-- Please update the list when adding new biomes!
local list_of_all_biomes = {
-- underground:
"FlowerForest_underground",
"JungleEdge_underground",
"ColdTaiga_underground",
"IcePlains_underground",
"IcePlainsSpikes_underground",
"MegaTaiga_underground",
"Taiga_underground",
"ExtremeHills+_underground",
"JungleM_underground",
"ExtremeHillsM_underground",
"JungleEdgeM_underground",
-- ocean:
"RoofedForest_ocean",
"JungleEdgeM_ocean",
"BirchForestM_ocean",
"BirchForest_ocean",
"IcePlains_deep_ocean",
"Jungle_deep_ocean",
"Savanna_ocean",
"MesaPlateauF_ocean",
"ExtremeHillsM_deep_ocean",
"Savanna_deep_ocean",
"SunflowerPlains_ocean",
"Swampland_deep_ocean",
"Swampland_ocean",
"MegaSpruceTaiga_deep_ocean",
"ExtremeHillsM_ocean",
"JungleEdgeM_deep_ocean",
"SunflowerPlains_deep_ocean",
"BirchForest_deep_ocean",
"IcePlainsSpikes_ocean",
"Mesa_ocean",
"StoneBeach_ocean",
"Plains_deep_ocean",
"JungleEdge_deep_ocean",
"SavannaM_deep_ocean",
"Desert_deep_ocean",
"Mesa_deep_ocean",
"ColdTaiga_deep_ocean",
"Plains_ocean",
"MesaPlateauFM_ocean",
"Forest_deep_ocean",
"JungleM_deep_ocean",
"FlowerForest_deep_ocean",
"MushroomIsland_ocean",
"MegaTaiga_ocean",
"StoneBeach_deep_ocean",
"IcePlainsSpikes_deep_ocean",
"ColdTaiga_ocean",
"SavannaM_ocean",
"MesaPlateauF_deep_ocean",
"MesaBryce_deep_ocean",
"ExtremeHills+_deep_ocean",
"ExtremeHills_ocean",
"MushroomIsland_deep_ocean",
"Forest_ocean",
"MegaTaiga_deep_ocean",
"JungleEdge_ocean",
"MesaBryce_ocean",
"MegaSpruceTaiga_ocean",
"ExtremeHills+_ocean",
"Jungle_ocean",
"RoofedForest_deep_ocean",
"IcePlains_ocean",
"FlowerForest_ocean",
"ExtremeHills_deep_ocean",
"MesaPlateauFM_deep_ocean",
"Desert_ocean",
"Taiga_ocean",
"BirchForestM_deep_ocean",
"Taiga_deep_ocean",
"JungleM_ocean",
-- water or beach?
"MesaPlateauFM_sandlevel",
"MesaPlateauF_sandlevel",
"MesaBryce_sandlevel",
"Mesa_sandlevel",
-- beach:
"FlowerForest_beach",
"Forest_beach",
"StoneBeach",
"ColdTaiga_beach_water",
"Taiga_beach",
"Savanna_beach",
"Plains_beach",
"ExtremeHills_beach",
"ColdTaiga_beach",
"Swampland_shore",
"MushroomIslandShore",
"JungleM_shore",
"Jungle_shore",
-- dimension biome:
"Nether",
"End",
-- Overworld regular:
"Mesa",
"FlowerForest",
"Swampland",
"Taiga",
"ExtremeHills",
"Jungle",
"Savanna",
"BirchForest",
"MegaSpruceTaiga",
"MegaTaiga",
"ExtremeHills+",
"Forest",
"Plains",
"Desert",
"ColdTaiga",
"MushroomIsland",
"IcePlainsSpikes",
"SunflowerPlains",
"IcePlains",
"RoofedForest",
"ExtremeHills+_snowtop",
"MesaPlateauFM_grasstop",
"JungleEdgeM",
"ExtremeHillsM",
"JungleM",
"BirchForestM",
"MesaPlateauF",
"MesaPlateauFM",
"MesaPlateauF_grasstop",
"MesaBryce",
"JungleEdge",
"SavannaM",
}
-- count how many mobs are in an area
local function count_mobs(pos)
local num = 0
for _,object in pairs(get_objects_inside_radius(pos, aoc_range)) do
if object and object:get_luaentity() and object:get_luaentity().is_mob then
num = num + 1
end
end
return num
end
-- global functions
function mcl_mobs:spawn_abm_check(pos, node, name)
-- global function to add additional spawn checks
-- return true to stop spawning mob
end
--[[
Custom elements changed:
name:
the mobs name
dimension:
"overworld"
"nether"
"end"
types of spawning:
"water"
"ground"
"lava"
biomes: tells the spawner to allow certain mobs to spawn in certain biomes
{"this", "that", "grasslands", "whatever"}
what is aoc??? objects in area
WARNING: BIOME INTEGRATION NEEDED -> How to get biome through lua??
]]--
--this is where all of the spawning information is kept
local spawn_dictionary = {}
local summary_chance = 0
function mcl_mobs:spawn_setup(def)
if not mobs_spawn then return end
if not def then
minetest.log("warning", "Empty mob spawn setup definition")
return
end
local name = def.name
if not name then
minetest.log("warning", "Missing mob name")
return
end
local dimension = def.dimension or "overworld"
local type_of_spawning = def.type_of_spawning or "ground"
local biomes = def.biomes or list_of_all_biomes
local min_light = def.min_light or 0
local max_light = def.max_light or (minetest.LIGHT_MAX + 1)
local chance = def.chance or 1000
local aoc = def.aoc or aoc_range
local min_height = def.min_height or mcl_mapgen.overworld.min
local max_height = def.max_height or mcl_mapgen.overworld.max
local day_toggle = def.day_toggle
local on_spawn = def.on_spawn
local check_position = def.check_position
-- chance/spawn number override in minetest.conf for registered mob
local numbers = minetest.settings:get(name)
if numbers then
numbers = numbers:split(",")
chance = tonumber(numbers[1]) or chance
aoc = tonumber(numbers[2]) or aoc
if chance == 0 then
minetest.log("warning", string.format("[mcl_mobs] %s has spawning disabled", name))
return
end
minetest.log("action", string.format("[mcl_mobs] Chance setting for %s changed to %s (total: %s)", name, chance, aoc))
end
if chance < 1 then
chance = 1
minetest.log("warning", "Chance shouldn't be less than 1 (mob name: " .. name ..")")
end
spawn_dictionary[#spawn_dictionary + 1] = {
name = name,
dimension = dimension,
type_of_spawning = type_of_spawning,
biomes = biomes,
min_light = min_light,
max_light = max_light,
chance = chance,
aoc = aoc,
min_height = min_height,
max_height = max_height,
day_toggle = day_toggle,
check_position = check_position,
on_spawn = on_spawn,
}
summary_chance = summary_chance + chance
end
function mcl_mobs:spawn_specific(name, dimension, type_of_spawning, biomes, min_light, max_light, interval, chance, aoc, min_height, max_height, day_toggle, on_spawn)
-- Do mobs spawn at all?
if not mobs_spawn then
return
end
-- chance/spawn number override in minetest.conf for registered mob
local numbers = minetest.settings:get(name)
if numbers then
numbers = numbers:split(",")
chance = tonumber(numbers[1]) or chance
aoc = tonumber(numbers[2]) or aoc
if chance == 0 then
minetest.log("warning", string.format("[mcl_mobs] %s has spawning disabled", name))
return
end
minetest.log("action", string.format("[mcl_mobs] Chance setting for %s changed to %s (total: %s)", name, chance, aoc))
end
--load information into the spawn dictionary
local key = #spawn_dictionary + 1
spawn_dictionary[key] = {}
spawn_dictionary[key]["name"] = name
spawn_dictionary[key]["dimension"] = dimension
spawn_dictionary[key]["type_of_spawning"] = type_of_spawning
spawn_dictionary[key]["biomes"] = biomes
spawn_dictionary[key]["min_light"] = min_light
spawn_dictionary[key]["max_light"] = max_light
spawn_dictionary[key]["chance"] = chance
spawn_dictionary[key]["aoc"] = aoc
spawn_dictionary[key]["min_height"] = min_height
spawn_dictionary[key]["max_height"] = max_height
spawn_dictionary[key]["day_toggle"] = day_toggle
summary_chance = summary_chance + chance
end
local two_pi = 2 * math.pi
local function get_next_mob_spawn_pos(pos)
local distance = math_random(25, 32)
local angle = math_random() * two_pi
return {
x = math_round(pos.x + distance * math_cos(angle)),
y = pos.y,
z = math_round(pos.z + distance * math_sin(angle))
}
end
local function decypher_limits(posy)
posy = math_floor(posy)
return posy - 32, posy + 32
end
--a simple helper function for mob_spawn
local function biome_check(biome_list, biome_goal)
for _, data in pairs(biome_list) do
if data == biome_goal then
return true
end
end
return false
end
local function is_farm_animal(n)
return n == "mobs_mc:pig" or n == "mobs_mc:cow" or n == "mobs_mc:sheep" or n == "mobs_mc:chicken" or n == "mobs_mc:horse" or n == "mobs_mc:donkey"
end
if mobs_spawn then
local perlin_noise
local function spawn_a_mob(pos, dimension, y_min, y_max)
local dimension = dimension or mcl_worlds.pos_to_dimension(pos)
local goal_pos = get_next_mob_spawn_pos(pos)
local spawning_position_list = find_nodes_in_area_under_air(
{x = goal_pos.x, y = y_min, z = goal_pos.z},
{x = goal_pos.x, y = y_max, z = goal_pos.z},
{"group:solid", "group:water", "group:lava"}
)
if #spawning_position_list <= 0 then return end
local spawning_position = spawning_position_list[math_random(1, #spawning_position_list)]
--hard code mob limit in area to 5 for now
if count_mobs(spawning_position) >= 5 then return end
local gotten_node = get_node(spawning_position).name
local gotten_biome = minetest.get_biome_data(spawning_position)
if not gotten_node or not gotten_biome then return end
gotten_biome = get_biome_name(gotten_biome.biome) --makes it easier to work with
--add this so mobs don't spawn inside nodes
spawning_position.y = spawning_position.y + 1
--only need to poll for node light if everything else worked
local gotten_light = get_node_light(spawning_position)
local is_water = get_item_group(gotten_node, "water") ~= 0
local is_lava = get_item_group(gotten_node, "lava") ~= 0
local is_ground = not (is_water or is_lava)
local is_grass = minetest.get_item_group(gotten_node,"grass_block") ~= 0
local has_bed = minetest.find_node_near(pos,25,{"group:bed"})
if not is_ground then
spawning_position.y = spawning_position.y - 1
end
local mob_def
--create a disconnected clone of the spawn dictionary
--prevents memory leak
local mob_library_worker_table = table_copy(spawn_dictionary)
--grab mob that fits into the spawning location
--randomly grab a mob, don't exclude any possibilities
perlin_noise = perlin_noise or minetest_get_perlin(noise_params)
local noise = perlin_noise:get_3d(spawning_position)
local current_summary_chance = summary_chance
while #mob_library_worker_table > 0 do
local mob_chance_offset = (math_round(noise * current_summary_chance + 12345) % current_summary_chance) + 1
local mob_index = 1
local mob_chance = mob_library_worker_table[mob_index].chance
local step_chance = mob_chance
while step_chance < mob_chance_offset do
mob_index = mob_index + 1
mob_chance = mob_library_worker_table[mob_index].chance
step_chance = step_chance + mob_chance
end
local mob_def = mob_library_worker_table[mob_index]
local mob_type = minetest.registered_entities[mob_def.name].type
if mob_def
and spawning_position.y >= mob_def.min_height
and spawning_position.y <= mob_def.max_height
and mob_def.dimension == dimension
and biome_check(mob_def.biomes, gotten_biome)
and gotten_light >= mob_def.min_light
and gotten_light <= mob_def.max_light
and (is_ground or mob_def.type_of_spawning ~= "ground")
and (mob_def.check_position and mob_def.check_position(spawning_position) or true)
and (not is_farm_animal(mob_def.name) or is_grass)
and (mob_type ~= "npc" or has_bed)
then
--everything is correct, spawn mob
local object = minetest.add_entity(spawning_position, mob_def.name)
if object then
return mob_def.on_spawn and mob_def.on_spawn(object, pos)
end
end
current_summary_chance = current_summary_chance - mob_chance
table_remove(mob_library_worker_table, mob_index)
end
end
--MAIN LOOP
local timer = 0
minetest.register_globalstep(function(dtime)
timer = timer + dtime
if timer < 10 then return end
timer = 0
for _, player in pairs(get_connected_players()) do
local pos = player:get_pos()
local dimension = mcl_worlds.pos_to_dimension(pos)
-- ignore void and unloaded area
if dimension ~= "void" and dimension ~= "default" then
local y_min, y_max = decypher_limits(pos.y)
for i = 1, math_random(1, 4) do
spawn_a_mob(pos, dimension, y_min, y_max)
end
end
end
end)
end