316 lines
8.2 KiB
Lua
316 lines
8.2 KiB
Lua
local S = mobs.intllib
|
||
|
||
mcl_mobspawners = {}
|
||
|
||
local default_mob = "mobs_mc:pig"
|
||
|
||
-- Monster spawner
|
||
local spawner_default = default_mob.." 0 15 4 15"
|
||
|
||
local function get_mob_textures(mob)
|
||
-- FIXME: Ummm … wtf? Why isn't there a textures attribute?
|
||
return minetest.registered_entities[mob].texture_list[1]
|
||
end
|
||
|
||
local function find_doll(pos)
|
||
for _,obj in ipairs(minetest.get_objects_inside_radius(pos, 1)) do
|
||
if not obj:is_player() then
|
||
if obj ~= nil and obj:get_luaentity().name == "mcl_mobspawners:doll" then
|
||
return obj
|
||
end
|
||
end
|
||
end
|
||
return nil
|
||
end
|
||
|
||
local function spawn_doll(pos)
|
||
return minetest.add_entity({x=pos.x, y=pos.y-0.3, z=pos.z}, "mcl_mobspawners:doll")
|
||
end
|
||
|
||
local function set_doll_properties(doll, mob)
|
||
local mobinfo = minetest.registered_entities[mob]
|
||
local prop = {
|
||
mesh = mobinfo.mesh,
|
||
textures = get_mob_textures(mob),
|
||
visual_size = {
|
||
x = mobinfo.visual_size.x * 0.33333,
|
||
y = mobinfo.visual_size.y * 0.33333,
|
||
}
|
||
}
|
||
doll:set_properties(prop)
|
||
doll:get_luaentity()._mob = mob
|
||
end
|
||
|
||
|
||
|
||
--[[ Public function: Setup the spawner at pos.
|
||
This function blindly assumes there's actually a spawner at pos.
|
||
If not, then the results are undefined.
|
||
All the arguments are optional!
|
||
|
||
* Mob: ID of mob to spawn (default: mobs_mc:pig)
|
||
* MinLight: Minimum light to spawn (default: 0)
|
||
* MaxLight: Maximum light to spawn (default: 15)
|
||
* MaxMobsInArea: How many mobs are allowed in the area around the spawner (default: 4)
|
||
* PlayerDistance: Spawn mobs only if a player is within this distance; 0 to disable (default: 15)
|
||
* YOffset: Y offset to spawn mobs; 0 to disable (default: 0)
|
||
]]
|
||
|
||
function mcl_mobspawners.setup_spawner(pos, Mob, MinLight, MaxLight, MaxMobsInArea, PlayerDistance, YOffset)
|
||
-- Activate monster spawner and disable editing functionality
|
||
if Mob == nil then Mob = default_mob end
|
||
if MinLight == nil then MinLight = 0 end
|
||
if MaxLight == nil then MaxLight = 15 end
|
||
if MaxMobsInArea == nil then MaxMobsInArea = 4 end
|
||
if PlayerDistance == nil then PlayerDistance = 15 end
|
||
if YOffset == nil then YOffset = 0 end
|
||
local meta = minetest.get_meta(pos)
|
||
meta:set_string("Mob", Mob)
|
||
meta:set_int("MinLight", MinLight)
|
||
meta:set_int("MaxLight", MaxLight)
|
||
meta:set_int("MaxMobsInArea", MaxMobsInArea)
|
||
meta:set_int("PlayerDistance", PlayerDistance)
|
||
meta:set_int("YOffset", YOffset)
|
||
|
||
-- Create doll
|
||
local doll = spawn_doll(pos)
|
||
set_doll_properties(doll, Mob)
|
||
|
||
|
||
-- Start spawning very soon
|
||
local t = minetest.get_node_timer(pos)
|
||
t:start(2)
|
||
end
|
||
|
||
-- Spawn monsters around pos
|
||
-- NOTE: The node is timer-based, rather than ABM-based.
|
||
local spawn_monsters = function(pos, elapsed)
|
||
|
||
-- get meta
|
||
local meta = minetest.get_meta(pos)
|
||
|
||
-- get settings
|
||
local mob = meta:get_string("Mob")
|
||
local mlig = meta:get_int("MinLight")
|
||
local xlig = meta:get_int("MaxLight")
|
||
local num = meta:get_int("MaxMobsInArea")
|
||
local pla = meta:get_int("PlayerDistance")
|
||
local yof = meta:get_int("YOffset")
|
||
|
||
-- 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
|
||
minetest.log("error", "[mcl_mobspawners] Monster Spawner: Mob doesn't exist: "..mob)
|
||
return
|
||
end
|
||
|
||
-- check objects inside 8×8 area around spawner
|
||
local objs = minetest.get_objects_inside_radius(pos, 8)
|
||
local count = 0
|
||
local ent = nil
|
||
|
||
|
||
local timer = minetest.get_node_timer(pos)
|
||
|
||
-- spawn mob if player detected and in range
|
||
if pla > 0 then
|
||
|
||
local in_range = 0
|
||
local objs = minetest.get_objects_inside_radius(pos, pla)
|
||
|
||
for _,oir in pairs(objs) do
|
||
|
||
if oir:is_player() then
|
||
|
||
in_range = 1
|
||
|
||
break
|
||
end
|
||
end
|
||
|
||
-- player not found
|
||
if in_range == 0 then
|
||
-- Try again quickly
|
||
timer:start(2)
|
||
return
|
||
end
|
||
end
|
||
|
||
--[[ HACK!
|
||
The doll may not stay spawned if the monster spawner is placed far away from
|
||
players, so we will check for its existance periodically when a player is nearby.
|
||
This would happen almost always when the monster spawner is placed by the mapgen.
|
||
FIXME: Find out why the doll does not seem to spawn / despawns immediately when
|
||
monster spawner is placed by mapgen.
|
||
]]
|
||
local doll = find_doll(pos)
|
||
if not doll then
|
||
doll = spawn_doll(pos)
|
||
set_doll_properties(doll, mob)
|
||
end
|
||
|
||
-- count mob objects of same type in area
|
||
for k, obj in ipairs(objs) do
|
||
|
||
ent = obj:get_luaentity()
|
||
|
||
if ent and ent.name and ent.name == mob then
|
||
count = count + 1
|
||
end
|
||
end
|
||
|
||
-- Are there too many of same type? then fail
|
||
if count >= num then
|
||
timer:start(math.random(5, 20))
|
||
return
|
||
end
|
||
|
||
-- find air blocks within 8×3×8 nodes of spawner
|
||
local air = minetest.find_nodes_in_area(
|
||
{x = pos.x - 4, y = pos.y - 1 + yof, z = pos.z - 4},
|
||
{x = pos.x + 4, y = pos.y + 1 + yof, z = pos.z + 4},
|
||
{"air"})
|
||
|
||
-- spawn up to 4 mobs in random air blocks
|
||
if air then
|
||
for a=1, 4 do
|
||
if #air <= 0 then
|
||
-- We're out of space! Stop spawning
|
||
break
|
||
end
|
||
local air_index = math.random(#air)
|
||
local pos2 = air[air_index]
|
||
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 then
|
||
minetest.add_entity(pos2, mob)
|
||
end
|
||
table.remove(air, air_index)
|
||
end
|
||
end
|
||
|
||
-- Spawn attempt done. Next spawn attempt much later
|
||
timer:start(math.random(10, 39.95))
|
||
|
||
end
|
||
|
||
minetest.register_node("mcl_mobspawners:spawner", {
|
||
tiles = {"mob_spawner.png"},
|
||
drawtype = "glasslike",
|
||
paramtype = "light",
|
||
sunlight_propagates = true,
|
||
walkable = true,
|
||
description = S("Monster Spawner"),
|
||
_doc_items_longdesc = S("A monster spawner is a block which regularily causes monsters and animals to appear around it."),
|
||
groups = {pickaxey=1, not_in_creative_inventory = 1, material_stone=1},
|
||
is_ground_content = false,
|
||
drop = "",
|
||
|
||
on_construct = mcl_mobspawners.setup_spawner,
|
||
|
||
on_destruct = function(pos)
|
||
local meta = minetest.get_meta(pos)
|
||
local obj = find_doll(pos)
|
||
if obj then
|
||
obj:remove()
|
||
end
|
||
end,
|
||
|
||
on_timer = spawn_monsters,
|
||
|
||
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] == true
|
||
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
|
||
|
||
mcl_mobspawners.setup_spawner(pos, mob, mlig, xlig, num, pla, yof)
|
||
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] distance[1-20] y_offset[-10 to 10]"))
|
||
end
|
||
end,
|
||
sounds = mcl_sounds.node_sound_metal_defaults(),
|
||
_mcl_blast_resistance = 25,
|
||
_mcl_hardness = 5,
|
||
})
|
||
|
||
-- Mob spawner doll (rotating icon inside cage)
|
||
|
||
local doll_def = {
|
||
hp_max = 1,
|
||
physical = true,
|
||
collisionbox = {0,0,0,0,0,0},
|
||
visual = "mesh",
|
||
makes_footstep_sound = false,
|
||
timer = 0,
|
||
automatic_rotate = math.pi * 2.9,
|
||
|
||
_mob = default_mob, -- name of the mob this doll represents
|
||
}
|
||
|
||
doll_def.get_staticdata = function(self)
|
||
return self._mob
|
||
end
|
||
|
||
doll_def.on_activate = function(self, staticdata, dtime_s)
|
||
local mob = staticdata
|
||
if mob == "" or mob == nil then
|
||
mob = default_mob
|
||
end
|
||
set_doll_properties(self.object, mob)
|
||
self.object:setvelocity({x=0, y=0, z=0})
|
||
self.object:setacceleration({x=0, y=0, z=0})
|
||
self.object:set_armor_groups({immortal=1})
|
||
|
||
end
|
||
|
||
doll_def.on_step = function(self, dtime)
|
||
-- Check if spawner is still present. If not, delete the entity
|
||
self.timer = self.timer + 0.01
|
||
local n = minetest.get_node_or_nil(self.object:getpos())
|
||
if self.timer > 1 then
|
||
if n and n.name and n.name ~= "mcl_mobspawners:spawner" then
|
||
self.object:remove()
|
||
end
|
||
end
|
||
end
|
||
|
||
doll_def.on_punch = function(self, hitter) end
|
||
|
||
minetest.register_entity("mcl_mobspawners:doll", doll_def)
|
||
|
||
|
||
|