local enchantment_sparkle = function(ctx,color)
return minetest.add_particlespawner {
amount = 50;
time = 0.5;
minpos = vector.subtract(ctx.target.under, 0.5);
maxpos = vector.add(ctx.target.under, 0.5);
minvel = {x=0,z=0,y= 0.3}, maxvel = {x=0,z=0,y= 1.5};
minacc = {x=-0.2,z=-0.2,y=-0.1}, maxacc = {x=0.2,z=0.2,y=-0.2};
minexptime = 1, maxexptime = 2;
minsize = 0.5, maxsize = 2;
texture = sorcery.lib.image('sorcery_spark.png'):multiply(color):render();
animation = {
type = 'vertical_frames';
aspect_w = 16, aspect_h = 16;
length = 2;
};
glow = 14;
}
end
local anchorwand = function(aff,uses,recipe)
local affcolor = sorcery.lib.color(sorcery.data.affinities[aff].color)
return {
name = aff .. ' anchor';
desc = 'With an enchanter, anchor ' .. aff .. ' spells into an object to enable it to produce preternatural effects';
uses = uses;
affinity = recipe;
color = affcolor;
sound = 'xdecor_enchanting'; -- FIXME make own
cast = function(ctx)
if (not ctx.target) or ctx.target.type ~= 'node' then return false end
local node = minetest.get_node(ctx.target.under)
if node.name ~= 'sorcery:enchanter' then return false end
local inv = minetest.get_meta(ctx.target.under):get_inventory()
if inv:is_empty('item') then return false end
local subj = inv:get_stack('item',1)
-- now we have everything we need. this part is complex.
-- first, we need to check the item to see if it is in a
-- group eligible for enchantment. if so, we then retrieve
-- the item material and look up the slots offered by this
-- material. we iterate through the slot definitions to pick
-- out a candidate slot, criteria being that the slot
-- possesses the proper affinity, and that the corresponding
-- slot on the item enchantment record is empty, then pick
-- the final slot at random from this table if #candidates>0
-- (otherwise, we fail unceremoniously).
local current_enchant = sorcery.enchant.get(subj)
local material, eligible_spells = sorcery.enchant.getsubj(subj)
if eligible_spells == nil
or #eligible_spells == 0
or material == nil
or material.data.slots == nil
or #material.data.slots == 0
then return false end
-- determine the properties the enchantment will have
local power = 10
local energy = material.data.maxenergy
local reliability = 100
if ctx.base.gem == 'sapphire' then power = power + 5
elseif ctx.base.gem == 'amethyst' then
energy = energy * (math.random() * 0.7)
elseif ctx.base.gem == 'diamond' then
if math.random(5) == 1 then
power = power * 2
reliability = reliability - (reliability / 4)
else
power = power + 5
reliability = reliability - 10
end
end
local viable_slots = {}
for i,slot in pairs(material.data.slots) do
if sorcery.lib.tbl.has(slot.affinity,aff) then
for _,spell in pairs(current_enchant.spells) do
if spell.slot == i then goto nonviable end
end
viable_slots[#viable_slots + 1] = i
end
::nonviable::end
if #viable_slots == 0 then return false end
local target_slot = viable_slots[math.random(#viable_slots)]
-- once we have selected an appropriate slot, we iterate
-- through the list of known enchantments to check the
-- affinity of each against `aff`. if the affinity matches
-- the wand, we then check whether the 'recipe' matches.
-- if so, we've found the enchantment -- apply it to the
-- object and update its enchantment data. otherwise, we
-- move on to the next. if no matching recipe is found,
-- we give up and bail, returning 'false' to signify that
-- a spell was not cast.
local focus_match = function(spec,stack)
local default_mode
if spec.lens then
default_mode = 'dmg'
if minetest.get_item_group(stack:get_name(), 'sorcery_enchanting_lens') == 0
then return false end
local proto = stack:get_definition()._proto
if proto.kind ~= spec.lens or proto.gem ~= spec.gem
then return false end
elseif spec.item then
default_mode = 'consume'
if stack:get_name() ~= spec.item then
return false end
else
return false
end
local mode
if spec.dmg then mode = 'dmg'
elseif spec.consume then mode = 'consume'
else mode = default_mode end
if mode == 'dmg' then
stack:add_wear((spec.dmg or 1) * 1000)
return stack
elseif mode == 'consume' then
stack:take_item(spec.consume or 1)
return stack
end
end
for ench,data in pairs(sorcery.data.enchants) do
if data.affinity ~= aff or data.recipe == nil then goto skip end
local newinv = {}
for s,v in pairs(data.recipe) do
newinv[s] = focus_match(v,inv:get_stack('foci',s))
if newinv[s] == false then goto skip end
end
-- is the tool compatible with the chosen spell? we check its groups to
-- see if any of them grant it eligibility; if not, we skip to the next
-- spell. NOTE: this means the same recipe could mean different things
-- for different kinds of tools, if one were so inclined.
for g,v in pairs(subj:get_definition().groups) do
if v ~= 0 and sorcery.lib.tbl.has(data.groups, g)
then goto enchant end
end
goto skip
-- spell matches!
::enchant:: current_enchant.spells[#current_enchant.spells + 1] = {
id = ench;
slot = target_slot;
boost = power;
reliability = reliability;
}
current_enchant.energy = math.max(current_enchant.energy, energy)
sorcery.enchant.set(subj, current_enchant)
inv:set_stack('item',1,subj)
for i,v in pairs(newinv) do inv:set_stack('foci',i,v) end
sorcery.enchant.update_enchanter(ctx.target.under)
enchantment_sparkle(ctx,affcolor)
do return nil end
::skip::end
return false
end
};
end
-- note: this was written before terminology was standardized,
-- and "leytype" corresponds to what is otherwise known as an
-- "affinity"; "affinity" after this comment is widely misused
return {
flame = {
name = 'flamebolt';
color = {255,89,16};
uses = 64;
affinity = {'acacia','blazing'};
leytype = 'praxic';
desc = 'Conjure a gout of fire to scorch your foes with a flick of this wand';
cast = function(ctx)
local speed = 30 -- TODO maybe amethyst tip increases speed?
local heading = ctx.heading
heading.pos.y = heading.pos.y + 1.5 -- TODO maths
local bolt = minetest.add_entity(heading.pos,'sorcery:spell_projectile_flamebolt')
bolt:set_rotation(heading.yaw)
local vel = {
x = heading.yaw.x * speed;
y = heading.yaw.y * speed;
z = heading.yaw.z * speed;
};
bolt:set_velocity(vel)
end;
};
seal = {
name = 'sealing';
color = {255,238,16};
uses = 32;
desc = 'Bind an object to your spirit such that it will be rendered impregnable to others, or break a sealing created with this same wand';
leytype = 'imperic';
affinity = {'pine','dark'};
cast = function(ctx)
if ctx.target == nil or ctx.target.type ~= 'node' then return false end
local meta = minetest.get_meta(ctx.target.under)
-- first we need to check if the wand has an identifying 'key' yet,
-- and set one if not.
local wandmode = ctx.base.gem == 'sapphire'
local keycode
if ctx.meta:contains('sorcery_wand_key') then
keycode = ctx.meta:get_string('sorcery_wand_key')
else
keycode = sorcery.lib.str.rand(32)
ctx.meta:set_string('sorcery_wand_key', keycode)
-- ctx.meta:mark_as_private('sorcery_wand_key')
end
if meta:contains('owner') then
-- owner is already set -- can we break the enchantment?
if meta:get_string('sorcery_wand_key') == keycode then
meta:set_string('owner','')
meta:set_string('sorcery_wand_key','')
meta:set_string('sorcery_seal_mode','')
enchantment_sparkle(ctx,sorcery.lib.color(101,255,142))
else return false end
else
meta:set_string('sorcery_wand_key',keycode)
meta:mark_as_private('sorcery_wand_key')
meta:set_string('owner',ctx.caster:get_player_name())
if wandmode then
meta:set_string('sorcery_seal_mode','wand')
end
enchantment_sparkle(ctx,sorcery.lib.color(255,201,27))
end
end;
};
leyspark = {
name = 'Leyspark';
leytype = 'cognic';
color = {255,246,142}; -- bright yellow
affinity = {'apple','silent'};
uses = 128;
desc = 'Reveal the strength and affinities of the local leyline';
cast = function(ctx)
local color = ctx.base.gem == 'sapphire';
local duration = (ctx.base.gem == 'amethyst' and 4) or 2;
local ley = sorcery.ley.estimate(ctx.caster:get_pos())
local emit = function(color,strength)
minetest.add_particlespawner {
amount = 70 * strength;
time = duration * strength;
attached = ctx.caster;
texture = sorcery.lib.image('sorcery_spark.png'):
multiply(color:brighten(1.3)):render();
minpos = { x = -0.1, z = 0.5, y = 1.2};
maxpos = { x = 0.1, z = 0.3, y = 1.6};
minvel = { x = -0.5, z = -0.5, y = -0.5};
maxvel = { x = 0.5, z = 0.5, y = 0.5};
minacc = { x = 0.0, z = 0.0, y = 0.5};
maxacc = { x = 0.0, z = 0.0, y = 0.5};
minsize = 0.4, maxsize = 0.8;
minexptime = 1, maxexptime = 1;
glow = 14;
animation = {
type = 'vertical_frames';
aspect_w = 16;
aspect_h = 16;
length = 1.1;
};
}
end
local strength = ley.force
if color then
strength = strength / #ley.aff
for _,a in pairs(ley.aff) do
emit(sorcery.lib.color(sorcery.data.affinities[a].color), strength)
end
else
emit(sorcery.lib.color(250,255,185), strength)
end
end;
};
dowse = {
name = 'dowsing';
leytype = 'cognic';
color = {65,116,255};
affinity = {'acacia','dark','silent'};
uses = 176;
desc = 'Send up sparks of radia to indicate nearness or absence of attuned blocks';
};
verdant = {
name = 'verdant';
color = {16,29,255};
uses = 48;
leytype = 'imperic';
desc = 'Pour life-energy into the soil, causing flowers and trees to spring up at your command';
affinity = {'jungle','verdant'};
};
praxic = anchorwand('praxic', 16, {'pine','shimmering','blazing'});
counterpraxic = anchorwand('counterpraxic',23, {'pine','shimmering','silent'});
entropic = anchorwand('entropic', 8, {'jungle','dark'});
syncretic = anchorwand('syncretic', 12, {'aspen','verdant','shimmering','blazing'});
cognic = anchorwand('cognic', 32, {'acacia','verdant','dark'});
occlutic = anchorwand('occlutic', 15, {'apple','silent','dark'});
imperic = anchorwand('imperic', 8, {'apple','verdant','blazing'});
mandatic = anchorwand('mandatic', 18, {'jungle','verdant','silent'});
shape = {
name = 'shaping';
uses = 24;
color = {255,114,65};
leytype = 'praxic';
affinity = {'apple','blazing'};
desc = 'With an enchanter, physically alter the mundane qualities of an object';
};
attune = {
name = 'attunement';
uses = 38;
color = {255,65,207};
leytype = 'syncretic';
affinity = {'pine','verdant','dark'};
desc = 'Establish a connection between mystic mechanisms, like connecting two sides of a portal or impressing targets onto a dowsing wand in an enchanter';
};
meld = {
name = 'melding';
uses = 48;
leytype = 'syncretic';
color = {172,65,255};
affinity = {'apple','verdant'};
desc = 'Meld the properties of three balanced items on an enchanter to create a new one with special properties, but destroying the old ones and losing two thirds of the mass in the process. The precise outcome is not always predictable.';
};
divide = {
name = 'division';
uses = 19;
leytype = 'syncretic';
color = {255,65,121};
affinity = {'apple','shimmering'};
desc = 'Shatter an item on an enchanter, dividing its essence equally into three parts and precipitating it into new items embodying various properties of the destroyed item. The outcome is not always predictable.';
};
obliterate = {
name = 'obliteration';
uses = 129;
color = {175,6,212};
affinity = {'aspen','dark'};
leytype = 'occlutic';
desc = 'Totally and irreversibly obliterate all items on an enchanter.';
};
sacrifice = {
name = 'sacrifice';
uses = 58;
color = {212,6,63};
affinity = {'aspen','blazing'};
leytype = 'syncretic';
desc = 'Transform the matter of one to three items on an enchanter into energy and empower the item on the center of the enchanter with it. Useful to recharge wands in areas with weak leylines.';
};
transfer = {
name = 'transfer';
uses = 65;
color = {6,212,121};
leytype = 'syncretic';
affinity = {'aspen','shimmering','silent'};
desc = 'Transfer ley-current from items on an enchanter into the item in the center, but at a 50% loss if they are of mismatched affinities. One third of maximum current is transferred, and when used on items with little power may destroy them or their enchantments';
};
transmute = {
name = 'transmutation';
uses = 7;
color = {255,90,18};
leytype = 'imperic';
affinity = {'aspen','shimmering','dark','blazing'};
desc = 'Transmute three ingots into one of a different metal, determined by chance and influenced by configuration of the wand';
};
disjoin = {
name = 'disjunction';
uses = 32;
color = {17,6,212};
leytype = 'occlutic';
affinity = {'jungle','silent'};
desc = 'With an enchanter, disjoin the anchor holding a spell into an object so a new spell can instead be bound in';
};
luminate = {
name = 'lumination';
desc = 'Banish darkness all about you for a few moments';
uses = 40;
color = {244,255,157};
affinity = {'acacia','shimmering','blazing'};
leytype = 'cognic';
cast = function(ctx)
local center = ctx.heading.pos
local maxpower = 20
local power = (ctx.base.gem == 'sapphire' and maxpower) or maxpower/2
local range = (ctx.base.gem == 'emerald' and 10) or 5
local duration = (ctx.base.gem == 'amethyst' and 60) or 30
if ctx.base.gem == 'diamond' then
power = power * (math.random()*2)
range = range * (math.random()*2)
duration = duration * (math.random()*2)
end
local lum = math.ceil((power/maxpower) * minetest.LIGHT_MAX)
for i=1,power do
local pos = vector.add(center, {
x = math.random(-range,range);
z = math.random(-range,range);
y = math.random(0,range/2);
})
local delta = vector.subtract(pos,center)
local near = 1 - (delta.x^2 + delta.y^2 + delta.z^2)/(range^2)
if minetest.get_node(pos).name == 'air' then
minetest.set_node(pos,{name='sorcery:air_glimmer_' .. tostring(lum)})
do local lm = minetest.get_meta(pos)
lm:set_float('duration',duration)
lm:set_float('timeleft',duration)
lm:set_float('power',lum * near)
end
end
end
end;
};
}