Aaron Suen 0b39c6703e Limit and spread out fire spark packets
Before we were generating one spark spawner for
each ABM run, which could run hundreds of nodes for
a large blaze, and bunched them together.  Instead,
push into a limited fair queue, and also spread the
actual spark spawning out across time to spread the
network traffic from fire.
2021-03-23 20:39:54 -04:00

130 lines
3.2 KiB
Lua

-- LUALOCALS < ---------------------------------------------------------
local ipairs, math, minetest, nodecore, pairs, vector
= ipairs, math, minetest, nodecore, pairs, vector
local math_random
= math.random
-- LUALOCALS > ---------------------------------------------------------
local modname = minetest.get_current_modname()
local sparks = {}
local sparkqty = 0
local sparkmax = 50
nodecore.register_globalstep("fire sparks", function()
if sparkqty < 1 then return end
for i = 1, #sparks do
local pos = sparks[i]
minetest.after(math_random(), function()
minetest.add_particlespawner({
amount = math_random(1, 3),
time = 1,
minpos = vector.subtract(pos, 0.5),
maxpos = vector.add(pos, 0.5),
minvel = {x = -1, y = 2, z = -1},
maxvel = {x = 1, y = 2.5, z = 1},
minacc = {x = -0.1, y = 0, z = -0.1},
maxacc = {x = 0.1, y = 0, z = 0.1},
minxeptime = 1,
maxexptime = 3,
minsize = 0.1,
maxsize = 0.2,
collisiondetection = true,
collision_removal = true,
texture = "nc_fire_spark.png",
glow = math_random(5, 9)
})
end)
end
sparks = {}
sparkqty = 0
end)
do
local flamedirs = nodecore.dirs()
local embers = {}
minetest.after(0, function()
for k, v in pairs(minetest.registered_items) do
if v.groups.ember then
embers[k] = true
end
end
end)
nodecore.register_limited_abm({
label = "fire consume",
interval = 1,
chance = 1,
nodenames = {modname .. ":fire"},
action = function(pos)
sparkqty = sparkqty + 1
if sparkqty > sparkmax then
local sparkid = math_random(1, sparkqty)
if sparkid <= sparkmax then
sparks[sparkid] = pos
end
else
sparks[sparkqty] = pos
end
local found = {}
for _, dp in ipairs(flamedirs) do
local npos = vector.add(pos, dp)
local node = minetest.get_node_or_nil(npos)
if (not node) or embers[node.name] then
found[#found + 1] = npos
end
end
if #found < 1 then
return minetest.remove_node(pos)
end
local picked = nodecore.pickrand(found)
return nodecore.fire_check_expend(picked)
end
})
end
nodecore.register_limited_abm({
label = "flammables ignite",
interval = 5,
chance = 1,
nodenames = {"group:flammable"},
neighbors = {"group:igniter"},
neighbors_invert = true,
action = function(pos)
nodecore.fire_check_ignite(pos)
end
})
nodecore.register_limited_abm({
label = "ember snuff/flames",
interval = 1,
chance = 1,
nodenames = {"group:ember"},
action = function(pos, node)
local snuff, vents = nodecore.fire_check_snuff(pos, node)
if snuff or not vents then return end
for i = 1, #vents do
if vents[i].q < 1 then
minetest.set_node(vents[i], {name = modname .. ":fire"})
end
end
end
})
nodecore.register_ambiance({
label = "flame ambiance",
nodenames = {"group:flame_ambiance"},
interval = 1,
chance = 1,
sound_name = "nc_fire_flamy",
sound_gain = 0.1
})
nodecore.register_item_ambiance({
label = "flame ambiance",
itemnames = {"group:flame_ambiance"},
interval = 1,
chance = 1,
sound_name = "nc_fire_flamy",
sound_gain = 0.1
})