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local S = mobs.intllib
-- mob spawner
local spawner_default = "mobs_animal:pumba 10 15 0 0 0"
minetest.register_node("mobs:spawner", {
tiles = {"mob_spawner.png"},
drawtype = "glasslike",
paramtype = "light",
walkable = true,
description = S("Mob Spawner"),
groups = {cracky = 1},
on_construct = function(pos)
local meta = minetest.get_meta(pos)
-- setup formspec
local head = S("(mob name) (min light) (max light) (amount)"
.. " (player distance) (Y offset)")
-- text entry formspec
meta:set_string("formspec",
"size[10,3.5]"
.. "label[0.15,0.5;" .. minetest.formspec_escape(head) .. "]"
.. "field[1,2.5;8.5,0.8;text;" .. S("Command:")
.. ";${command}]")
meta:set_string("infotext", S("Spawner Not Active (enter settings)"))
meta:set_string("command", spawner_default)
end,
on_right_click = function(pos, placer)
if minetest.is_protected(pos, placer:get_player_name()) then
return
end
end,
on_receive_fields = function(pos, formname, fields, sender)
if not fields.text or fields.text == "" then
return
end
local meta = minetest.get_meta(pos)
local comm = fields.text:split(" ")
local name = sender:get_player_name()
if minetest.is_protected(pos, name) then
minetest.record_protection_violation(pos, name)
return
end
local mob = comm[1] -- mob to spawn
local mlig = tonumber(comm[2]) -- min light
local xlig = tonumber(comm[3]) -- max light
local num = tonumber(comm[4]) -- total mobs in area
local pla = tonumber(comm[5]) -- player distance (0 to disable)
local yof = tonumber(comm[6]) or 0 -- Y offset to spawn mob
if mob and mob ~= "" and mobs.spawning_mobs[mob]
and num and num >= 0 and num <= 10
and mlig and mlig >= 0 and mlig <= 15
and xlig and xlig >= 0 and xlig <= 15
and pla and pla >= 0 and pla <= 20
and yof and yof > -10 and yof < 10 then
meta:set_string("command", fields.text)
meta:set_string("infotext", S("Spawner Active (@1)", mob))
else
minetest.chat_send_player(name, S("Mob Spawner settings failed!"))
minetest.chat_send_player(name,
S("Syntax: “name min_light[0-14] max_light[0-14] max_mobs_in_area[0 to disable] player_distance[1-20] y_offset[-10 to 10]”"))
end
end
})
local max_per_block = tonumber(minetest.settings:get("max_objects_per_block") or 99)
-- spawner abm
minetest.register_abm({
label = "Mob spawner node",
nodenames = {"mobs:spawner"},
interval = 10,
chance = 4,
catch_up = false,
action = function(pos, node, active_object_count, active_object_count_wider)
-- return if too many entities already
if active_object_count_wider >= max_per_block then
return
end
-- get meta and command
local meta = minetest.get_meta(pos)
local comm = meta:get_string("command"):split(" ")
-- get settings from command
local mob = comm[1]
local mlig = tonumber(comm[2])
local xlig = tonumber(comm[3])
local num = tonumber(comm[4])
local pla = tonumber(comm[5]) or 0
local yof = tonumber(comm[6]) or 0
-- if amount is 0 then do nothing
if num == 0 then
return
end
-- are we spawning a registered mob?
if not mobs.spawning_mobs[mob] then
--print ("--- mob doesn't exist", mob)
return
end
-- check objects inside 9x9 area around spawner
local objs = minetest.get_objects_inside_radius(pos, 9)
local count = 0
local ent
-- count mob objects of same type in area
for _, obj in ipairs(objs) do
ent = obj:get_luaentity()
if ent and ent.name and ent.name == mob then
count = count + 1
end
end
-- is there too many of same type?
if count >= num then
return
end
-- spawn mob if player detected and in range
if pla > 0 then
local in_range = 0
local objsp = minetest.get_objects_inside_radius(pos, pla)
for _, oir in pairs(objsp) do
if oir:is_player() then
in_range = 1
break
end
end
-- player not found
if in_range == 0 then
return
end
end
-- set medium mob usually spawns in (defaults to air)
local reg = minetest.registered_entities[mob].fly_in
if not reg or type(reg) == "string" then
reg = {(reg or "air")}
end
-- find air blocks within 5 nodes of spawner
local air = minetest.find_nodes_in_area(
{x = pos.x - 5, y = pos.y + yof, z = pos.z - 5},
{x = pos.x + 5, y = pos.y + yof, z = pos.z + 5}, reg)
-- spawn in random air block
if air and #air > 0 then
local pos2 = air[math.random(#air)]
local lig = minetest.get_node_light(pos2) or 0
pos2.y = pos2.y + 0.5
-- only if light levels are within range
if lig >= mlig and lig <= xlig
and minetest.registered_entities[mob] then
minetest.add_entity(pos2, mob)
end
end
end
})
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