for i=1,minetest.LIGHT_MAX do
minetest.register_node('sorcery:air_glimmer_' .. tostring(i), {
drawtype = 'airlike';
light_source = 5 + math.ceil(i * (11/minetest.LIGHT_MAX));
sunlight_propagates = true;
buildable_to = true;
pointable = false;
walkable = false;
floodable = true;
groups = { air = 1; sorcery_air = 1; };
on_construct = function(pos)
local meta = minetest.get_meta(pos)
meta:set_float('duration',10)
meta:set_float('timeleft',10)
meta:set_int('power',minetest.LIGHT_MAX)
minetest.get_node_timer(pos):start(1)
end;
on_timer = function(pos,dtime)
local meta = minetest.get_meta(pos)
local elapsed = dtime + meta:get_float('duration') - meta:get_float('timeleft')
local level = 1 - (elapsed / meta:get_float('duration'))
local lum = math.ceil(level*meta:get_int('power'))
if lum ~= i then
if lum <= 0 then
minetest.remove_node(pos)
return false
else
minetest.swap_node(pos,{name='sorcery:air_glimmer_'..tostring(lum)})
end
end
minetest.add_particlespawner {
amount = 3 * meta:get_int('power');
time = 1.1;
minpos = vector.subtract(pos,2);
maxpos = vector.add(pos,2);
minvel = {x = -0.5; z = -0.5; y = -0.3};
maxvel = {x = 0.5; z = 0.5; y = 0.3};
minsize = 0.3, maxsize = 0.9;
minexptime = 0.5, maxexptime = 1.2;
texture = 'sorcery_spark.png';
animation = {
glow = i;
length = 1.2;
type = 'vertical_frames';
aspect_w = 16;
aspect_h = 16;
}
}
meta:set_float('timeleft',meta:get_float('duration') - elapsed)
return true
end;
})
end