Kelp store age metadata by bulk on a queue, improve API, etc.

Highlights:
- Implement storing age metadata by bulk on a queue, with maximum interval and queue length.
- "Flexible" initial growth probability. Will provide helper APIs.
- Fix various bugs with unsubmerged kelp detection, submerged tip detection, age metadata.
- Various optimizations.
This commit is contained in:
iliekprogrammar 2021-03-30 13:28:44 +08:00
parent ecdbc30b63
commit 9518086b6b

@ -1,8 +1,9 @@
-- TODO: whenever it becomes possible to fully implement kelp without the
-- plantlike_rooted limitation, please adapt the code accordingly.
-- plantlike_rooted limitation, please update accordingly.
--
-- TODO: In MC, you can't actually destroy kelp by bucket'ing water in the middle.
-- However, because of the plantlike_rooted hack, we'll just allow it for now.
-- TODO: Integrate ABMs with the new kelp code, disabled. OR remove them entirely
local S = minetest.get_translator("mcl_ocean")
local mod_doc = minetest.get_modpath("doc") ~= nil
@ -15,6 +16,7 @@ local mt_registered_items = minetest.registered_items
local mt_registered_nodes = minetest.registered_nodes
-- functions
local mt_log = minetest.log
local mt_add_item = minetest.add_item
local mt_get_item_group = minetest.get_item_group
local mt_get_node = minetest.get_node
@ -22,21 +24,31 @@ local mt_get_node_level = minetest.get_node_level
local mt_get_node_max_level = minetest.get_node_max_level
local mt_get_node_or_nil = minetest.get_node_or_nil
local mt_get_node_timer = minetest.get_node_timer
local mt_hash_node_position = minetest.hash_node_position
local mt_is_protected = minetest.is_protected
local mt_set_node = minetest.set_node
local mt_get_meta = minetest.get_meta
local mt_hash_node_position = minetest.hash_node_position
local mt_pos_to_string = minetest.pos_to_string
local mt_is_protected = minetest.is_protected
local mt_record_protection_violation = minetest.record_protection_violation
local mt_set_node = minetest.set_node
local mt_is_creative_enabled = minetest.is_creative_enabled
local mt_sound_play = minetest.sound_play
local math_min = math.min
local math_max = math.max
local math_ceil = math.ceil
local math_floor = math.floor
local math_random = math.random
local string_format = string.format
local table_copy = table.copy
local table_insert = table.insert
-- DEBUG: functions
local log = minetest.log
local chatlog = minetest.chat_send_all
il_chatlog = chatlog
il_get_meta = mt_get_meta
il_hash_pos = mt_hash_node_position
--------------------------------------------------------------------------------
-- Kelp API
@ -45,30 +57,51 @@ local chatlog = minetest.chat_send_all
local kelp = {}
mcl_ocean.kelp = kelp
-- Kelp minimum and maximum age. Once reached the maximum, kelp no longer grows.
kelp.MIN_AGE = 0
kelp.MAX_AGE = 25
kelp.TIMER_INTERVAL = 0.2
-- Tick interval (in seconds) for updating kelp.
kelp.TICK = 0.2
-- Tick interval (in seconds) to store kelp meta.
kelp.META_TICK = 2
-- Max age queue length
kelp.MAX_AGE_QUEUE = 20
-- The average amount of growth for kelp in a day is 2.16 (https://youtu.be/5Bp4lAjAk3I)
-- Normally, a day lasts 20 minutes, meaning this nodetimer is executed 24000 times.
-- Calculate probability via 2.16/24000 and we get the probability 9/100'000 or 9.0e-5
-- NOTE: currently, we can't exactly use the same type of randomness MC does,
-- because it has multiple complicated sets of PRNGs.
-- kelp.RANDOM_NUMERATOR = 9
kelp.RANDOM_NUMERATOR = 100
kelp.RANDOM_DENOMINATOR = 100000
-- Normally, a day lasts 20 minutes, meaning kelp.next_grow() is executed
-- 1200 / TICK times. Per tick probability = (216/100) / (1200/TICK)
-- NOTE: currently, we can't exactly use the same type of randomness MC does, because
-- it has multiple complicated sets of PRNGs.
-- NOTE: Small loss of precision, should be 10 to preserve it.
-- kelp.ROLL_GROWTH_PRECISION = 10
-- kelp.ROLL_GROWTH_NUMERATOR = 216 * kelp.TICK * kelp.ROLL_GROWTH_PRECISION
-- kelp.ROLL_GROWTH_DENOMINATOR = 100 * 1200 * kelp.ROLL_GROWTH_PRECISION
kelp.ROLL_GROWTH_PRECISION = 1
kelp.ROLL_GROWTH_NUMERATOR = 216 * kelp.TICK
kelp.ROLL_GROWTH_DENOMINATOR = 100 * 1200
-- Sounds used to dig and place kelp.
kelp.leaf_sounds = mcl_sounds.node_sound_leaves_defaults()
-- TODO: is this really necessary
-- Lock drops to avoid duplicate drops, set after dropping detached kelp.
kelp.lock_drop = 0
-- Registrar of nodetimers, indexed by pos_hash.
kelp.registered_nodetimers = {}
-- Pool storing nodetimers
kelp.timers_pool = {}
-- Pool storing age, indexed by pos_hash.
kelp.age_pool = {}
-- Queue(List) of hashed positions to save their ages.
-- Invalid ones may still persist in this queue.
kelp.age_queue = {}
-- Stores only valid positions of each hashed postiions.
kelp.age_queue_pos = {}
-- is age in the growable range?
function kelp.is_age_growable(age)
@ -78,9 +111,10 @@ end
-- Is this water?
-- Returns the liquidtype, if indeed water.
function kelp.is_submerged(node, def)
function kelp.is_submerged(node)
if mt_get_item_group(node.name, "water") ~= 0 then
return def.liquidtype -- Expected only "source" and "flowing" from water liquids
-- Expected only "source" and "flowing" from water liquids
return mt_registered_nodes[node.name].liquidtype
end
return false
end
@ -88,16 +122,19 @@ end
-- Is the water downward flowing?
-- (kelp can grow/be placed inside downward flowing water)
function kelp.is_downward_flowing(pos, node, def, is_above)
function kelp.is_downward_flowing(pos, node, pos_above, node_above, __is_above__)
-- Function params: (pos[, node]) or (node, pos_above) or (node, node_above)
local node = node or mt_get_node(pos)
local result = (math_floor(node.param2 / 8) % 2) == 1
if not (result or is_above) then
if not (result or __is_above__) then
-- If not, also check node above.
-- (this is needed due a weird quirk in the definition of "downwards flowing"
-- liquids in Minetest)
local node_above = mt_get_node({x=pos.x,y=pos.y+1,z=pos.z})
local def_above = mt_registered_nodes[node_above.name]
result = kelp.is_submerged(node_above, def_above)
or kelp.is_downward_flowing(pos, node_above, def_above, true)
local pos_above = pos_above or {x=pos.x,y=pos.y+1,z=pos.z}
local node_above = node_above or mt_get_node(pos_above)
result = kelp.is_submerged(node_above)
or kelp.is_downward_flowing(nil, node_above, nil, nil, true)
end
return result
end
@ -105,20 +142,23 @@ end
-- Will node fall at that position?
-- This only checks if a node would fall, meaning that node need not be at pos.
function kelp.is_falling(pos, node)
function kelp.is_falling(pos, node, is_falling, pos_bottom, node_bottom, def_bottom)
-- Optional params: is_falling, pos_bottom, node_bottom, def_bottom
-- NOTE: Modified from check_single_for_falling in builtin.
-- Please update as necessary.
-- Please update accordingly.
local nodename = node.name
if mt_get_item_group(nodename, "falling_node") == 0 then
if is_falling == false or
is_falling == nil and mt_get_item_group(nodename, "falling_node") == 0 then
return false
end
local pos_bottom = {x = pos.x, y = pos.y - 1, z = pos.z}
local pos_bottom = pos_bottom or {x = pos.x, y = pos.y - 1, z = pos.z}
-- get_node_or_nil: Only fall if node below is loaded
local node_bottom = mt_get_node_or_nil(pos_bottom)
local node_bottom = node_bottom or mt_get_node_or_nil(pos_bottom)
local nodename_bottom = node_bottom.name
local def_bottom = node_bottom and mt_registered_nodes[nodename_bottom]
local def_bottom = def_bottom or node_bottom and mt_registered_nodes[nodename_bottom]
if not def_bottom then
return false
end
@ -143,6 +183,20 @@ function kelp.is_falling(pos, node)
end
-- Roll whether to grow kelp or not.
function kelp.roll_growth(numerator, denominator)
-- Optional params: numerator, denominator
return math_random(denominator or kelp.ROLL_GROWTH_DENOMINATOR) <= (numerator or kelp.ROLL_GROWTH_NUMERATOR)
end
-- Roll initial age for kelp.
function kelp.roll_init_age(min, max)
-- Optional params
return math_random(min or kelp.MIN_AGE, (max or kelp.MAX_AGE)-1)
end
-- Converts param2 to kelp height.
function kelp.get_height(param2)
return math_floor(param2 / 16)
@ -150,28 +204,31 @@ end
-- Obtain pos and node of the tip of kelp.
function kelp.get_tip(pos, node)
local size = math.ceil(node.param2 / 16)
local pos_tip = table.copy(pos)
pos_tip.y = pos_tip.y + size
return pos_tip, mt_get_node(pos_tip)
function kelp.get_tip(pos, param2)
-- Optional params: param2
local height = kelp.get_height(param2 or mt_get_node(pos).param2)
local pos_tip = {x=pos.x, y=pos.y, z=pos.z}
pos_tip.y = pos_tip.y + height + 1
return pos_tip, mt_get_node(pos_tip), height
end
-- Obtain position of the first kelp unsubmerged.
function kelp.find_unsubmerged(pos, node)
function kelp.find_unsubmerged(pos, node, height)
-- Optional params: node, height
local node = node or mt_get_node(pos)
local height = height or kelp.get_height(node.param2)
local x,y,z = pos.x, pos.y, pos.z
local height = kelp.get_height(node.param2)
local walk_pos = {x=x, z=z}
local walk_pos = {x=pos.x, z=pos.z}
local y = pos.y
for i=1,height do
walk_pos.y = y + i
local walk_node = mt_get_node(walk_pos)
if mt_get_item_group(walk_node.name, "water") == 0 then
return walk_pos, walk_node
if not kelp.is_submerged(walk_node) then
return walk_pos, walk_node, height, i
end
end
return nil
return nil, nil, height, height
end
@ -181,53 +238,145 @@ function kelp.next_param2(param2)
end
-- Grow next kelp.
function kelp.next_grow(pos, node, pos_tip, def_tip, downward_flowing)
-- Optional parameters
local pos_tip, def_tip = pos_tip, def_tip
local downward_flowing = downward_flowing
if pos_tip == nil and def_tip == nil then
local node_tip
pos_tip, node_tip = kelp.get_tip(pos, node)
def_tip = mt_registered_nodes[node_tip.name]
downward_flowing = kelp.is_submerged(pos_tip, node_tip)
and kelp.is_downward_flowing(pos_tip, node_tip, def_tip)
-- Stores age from kelp.age_queue* into their respective meta
function kelp.store_meta()
local count = 0
for _ in pairs(kelp.age_queue_pos) do
count = count + 1
end
-- chatlog(string_format("Storing age metadata: %d in queue", #kelp.age_queue))
-- chatlog(string_format("Storing age metadata: %d valid in queue", count))
for i=1,#kelp.age_queue do
local pos_hash = kelp.age_queue[i]
local pos = kelp.age_queue_pos[pos_hash]
-- queued hashes may no longer point to a valid pos, e.g. kelp is destroyed.
if pos then
mt_get_meta(pos):set_int("mcl_ocean:kelp_age", kelp.age_pool[pos_hash])
end
end
kelp.age_queue = {}
kelp.age_queue_pos = {}
end
-- Store and queue a kelp's age to be saved into meta later.
function kelp.store_age(age, pos, pos_hash)
-- Watched params: pos
-- Optional params: pos_hash
local pos_hash = pos_hash or mt_hash_node_position(pos)
kelp.age_pool[pos_hash] = age
if not kelp.age_queue_pos[pos_hash] then
table_insert(kelp.age_queue, pos_hash)
kelp.age_queue_pos[pos_hash] = pos
return true, pos_hash
end
return false, pos_hash
end
-- Initialise a kelp's age.
function kelp.init_age(pos, age, pos_hash, meta)
-- Watched params: pos
-- Optional params: age, pos_hash, meta
local pos_hash = pos_hash or mt_hash_node_position(pos)
local meta = meta or mt_get_meta(pos)
local age = age
if not meta:contains("mcl_ocean:kelp_age") then
-- NOTE: age param can only replace initial age roll.
age = age or kelp.roll_init_age()
kelp.store_age(age, pos, pos_hash)
else
age = meta:get_int("mcl_ocean:kelp_age")
if not kelp.age_pool[pos_hash] then
kelp.age_pool[pos_hash] = age
end
end
return age, pos_hash, meta
end
-- Initialise kelp nodetimer.
function kelp.init_timer(pos, pos_hash)
-- Optional params: pos_hash
local pos_hash = pos_hash or mt_hash_node_position(pos)
local timer = kelp.timers_pool[pos_hash]
if not timer then
timer = mt_get_node_timer(pos)
kelp.timers_pool[pos_hash] = timer
end
if not timer:is_started() then
timer:start(kelp.TICK)
end
return pos_hash
end
-- Apply next kelp height.
function kelp.next_height(pos, node, pos_tip, node_tip, submerged, downward_flowing)
-- Modified params: node
-- Optional params: node, pos_tip, node_tip, submerged, downward_flowing
local node = node or mt_get_node(pos)
local pos_tip = pos_tip
local node_tip = node_tip or (pos_tip and mt_get_node(pos_tip))
if not pos_tip then
pos_tip,node_tip = kelp.get_tip(pos)
end
local downward_flowing = downward_flowing or
(submerged or kelp.is_submerged(node_tip)
and kelp.is_downward_flowing(pos_tip, node_tip))
-- Liquid source: Grow normally.
local node = table.copy(node)
node.param2 = kelp.next_param2(node.param2)
mt_set_node(pos, node)
-- Flowing liquid: Grow 1 step, but also turn the tip node into a liquid source.
if downward_flowing then
local alt_liq = def_tip.liquid_alternative_source
local alt_liq = mt_registered_nodes[node_tip.name].liquid_alternative_source
if alt_liq then
mt_set_node(pos_tip, {name=alt_liq})
end
end
return node, pos_tip, node_tip, submerged, downward_flowing
end
-- Naturally grow next kelp.
function kelp.natural_grow(pos, node, age, pos_hash, meta)
-- Must grow first, then get the new meta
kelp.next_grow(pos, node)
-- Optional params
local meta = meta or mt_get_meta(pos)
-- Grow next kelp.
function kelp.next_grow(age, pos, node, pos_hash, pos_tip, node_tip, submerged, downward_flowing)
-- Watched params: pos
-- Modified params: node
-- Optional params: node, pos_hash, pos_tip, node_tip, submerged, downward_flowing
local node = node or mt_get_node(pos)
local pos_hash = pos_hash or mt_hash_node_position(pos)
local pos_tip = pos_tip
local node_tip = node_tip or (pos_tip and mt_get_node(pos_tip))
if not pos_tip then
pos_tip,node_tip = kelp.get_tip(pos)
end
local age = age + 1
kelp.age_pool[pos_hash] = age
meta:set_int("mcl_ocean:kelp_age", age)
-- New kelp must also be submerged in water.
local downward_flowing = downward_flowing or kelp.is_downward_flowing(pos_tip, node_tip)
if not (submerged or kelp.is_submerged(node_tip)) then
return
end
kelp.next_height(pos, node, pos_tip, node_tip, submerged, downward_flowing)
return kelp.store_age(age, pos, pos_hash), node, pos_hash, pos_tip, node_tip, submerged, downward_flowing
end
-- Drops the items for detached kelps.
function kelp.detach_drop(pos, height, pos_hash)
local pos_hash = pos_hash or mt_hash_node_position(pos) -- Optional params
function kelp.detach_drop(pos, param2, pos_hash)
-- Optional params: param2, pos_hash
local height = kelp.get_height(param2 or mt_get_node(pos).param2)
local pos_hash = pos_hash or mt_hash_node_position(pos)
if kelp.lock_drop > 0 then
minetest.log("error",
@ -236,9 +385,11 @@ function kelp.detach_drop(pos, height, pos_hash)
return
end
local x,y,z = pos.x,pos.y,pos.z
local y = pos.y
local walk_pos = {x=pos.x, z=pos.z}
for i=1,height do
mt_add_item({x=x, y=y+i, z=z}, "mcl_ocean:kelp")
walk_pos.y = y+i
mt_add_item(walk_pos, "mcl_ocean:kelp")
end
-- Locks drop.
@ -251,7 +402,8 @@ end
-- Synonymous to digging the kelp.
-- NOTE: this is intended for whenever kelp truly becomes segmented plants
-- instead of rooted to the floor. Don't try to remove dig_pos.
function kelp.detach_dig(dig_pos, pos, node, is_drop, pos_hash)
function kelp.detach_dig(dig_pos, pos, node, drop, pos_hash)
-- Optional params: drop, pos_hash
local pos_hash = pos_hash or mt_hash_node_position(pos)
local param2 = node.param2
@ -260,17 +412,18 @@ function kelp.detach_dig(dig_pos, pos, node, is_drop, pos_hash)
-- Digs the entire kelp: invoke after_dig_node to mt_set_node.
if new_height <= 0 then
if is_drop then
kelp.detach_drop(dig_pos, kelp.get_height(param2), pos_hash)
if drop then
kelp.detach_drop(dig_pos, param2, pos_hash)
end
mt_set_node(pos, {
name=mt_registered_nodes[node.name].node_dig_prediction,
param=node.param, param2=0 })
param=node.param,
param2=0 })
-- Digs the kelp beginning at a height
else
if is_drop then
kelp.detach_drop(dig_pos, kelp.get_height(param2) - new_height, pos_hash)
if drop then
kelp.detach_drop(dig_pos, param2 - new_height, pos_hash)
end
mt_set_node(pos, {name=node.name, param=node.param, param2=16*new_height})
end
@ -281,7 +434,6 @@ end
-- Kelp callback functions
--------------------------------------------------------------------------------
-- Set this to drop kelps when
function kelp.surface_on_dig(pos, node, digger)
kelp.detach_dig(pos, pos, node, true)
end
@ -292,34 +444,47 @@ function kelp.surface_after_dig_node(pos, node)
end
function kelp.surface_on_timer(pos, elapsed)
function kelp.surface_on_timer(pos)
local node = mt_get_node(pos)
local dig_pos = kelp.find_unsubmerged(pos, node)
local pos_hash = mt_hash_node_position(pos)
-- Update detahed kelps
local dig_pos = kelp.find_unsubmerged(pos, node)
if dig_pos then
-- chatlog("detach_dig")
kelp.detach_dig(dig_pos, pos, node, true, pos_hash)
end
-- Grow kelp on chance
if math_random(kelp.RANDOM_DENOMINATOR) - kelp.RANDOM_NUMERATOR < 0 then
if kelp.roll_growth() then
local age = kelp.age_pool[pos_hash]
if kelp.is_age_growable(age) then
kelp.natural_grow(pos, node, age, pos_hash)
kelp.next_grow(age, pos, node, pos_hash)
end
end
return true
end
function kelp.surface_on_construct(pos)
local pos_hash = mt_hash_node_position(pos)
kelp.init_age(pos, nil, pos_hash)
kelp.init_timer(pos, pos_hash)
end
function kelp.surface_on_destruct(pos)
local node = mt_get_node(pos)
local pos_hash = mt_hash_node_position(pos)
-- on_falling callback. Activated by pistons for falling nodes too.
if kelp.is_falling(pos, node) then
kelp.detach_drop(pos, kelp.get_height(node.param2), pos_hash)
kelp.detach_drop(pos, node.param2, pos_hash)
end
-- Removes position from queue
kelp.age_queue_pos[pos_hash] = nil
-- Unlocks drops.
if kelp.lock_drop > 0 then
kelp.lock_drop = kelp.lock_drop - 1
@ -327,13 +492,14 @@ function kelp.surface_on_destruct(pos)
end
function kelp.surface_on_mvps_move(pos, node, oldpos, nodemeta)
-- Pistons moving falling nodes will have already activated on_falling callback.
kelp.detach_dig(pos, pos, node, mt_get_item_group(node.name, "falling_node") ~= 1)
end
-- NOTE: Uncomment this to use ABMs
-- NOTE: Uncomment this to use ABMs.
-- local function surface_unsubmerged_abm(pos, node)
-- local dig_pos = find_unsubmerged(pos, node)
-- if dig_pos then
@ -343,52 +509,6 @@ end
-- end
-- NOTE: Uncomment this to use nodetimers
function kelp.surface_register_nodetimer(pos, node, pos_hash, meta, age)
-- Optional params
local pos_hash,meta,age = pos_hash,meta,age
local timer = kelp.registered_nodetimers[pos_hash]
if not timer then
pos_hash = pos_hash or mt_hash_node_position(pos)
timer = mt_get_node_timer(pos)
kelp.registered_nodetimers[pos_hash] = timer
-- Pool age to avoid meta:get* operations
meta = meta or mt_get_meta(pos)
if not age then
if not meta:contains("mcl_ocean:kelp_age") then
age = math_random(0, kelp.MAX_AGE-1)
else
age = meta:get_int("mcl_ocean:kelp_age")
end
end
kelp.age_pool[pos_hash] = age
meta:set_int("mcl_ocean:kelp_age", age)
end
if not timer:is_started() then
timer:start(kelp.TIMER_INTERVAL)
end
return pos_hash, meta, age
end
-- NOTE: Uncomment this to use ABMs
-- function kelp.grow_abm(pos, node)
-- -- Grow kelp by 1 node length if it would grow inside water
-- node.param2 = next_param2(node.param2)
-- local pos_tip, node_tip = get_tip(pos, node)
-- local def_tip = mt_registered_nodes[node_tip.name]
-- if is_submerged(node_tip, def_tip) then
-- kelp.next_grow(pos, node, pos_tip, def_tip,
-- is_downward_flowing(pos_tip, node_tip, def_tip))
-- end
-- end
function kelp.kelp_on_place(itemstack, placer, pointed_thing)
if pointed_thing.type ~= "node" or not placer then
return itemstack
@ -410,17 +530,18 @@ function kelp.kelp_on_place(itemstack, placer, pointed_thing)
-- Protection
if mt_is_protected(pos_under, player_name) or
mt_is_protected(pos_above, player_name) then
minetest.log("action", player_name
mt_log("action", player_name
.. " tried to place " .. itemstack:get_name()
.. " at protected position "
.. minetest.pos_to_string(pos_under))
minetest.record_protection_violation(pos_under, player_name)
.. mt_pos_to_string(pos_under))
mt_record_protection_violation(pos_under, player_name)
return itemstack
end
local pos_tip, node_tip, def_tip
local pos_hash, meta
local pos_hash = mt_hash_node_position(pos_under)
local age = kelp.roll_init_age()
-- Kelp must also be placed on the top/tip side of the surface/kelp
@ -430,12 +551,9 @@ function kelp.kelp_on_place(itemstack, placer, pointed_thing)
-- When placed on kelp.
if mt_get_item_group(nu_name, "kelp") == 1 then
pos_tip, node_tip = kelp.get_tip(pos_under, node_under)
pos_tip,node_tip = kelp.get_tip(pos_under, node_under.param2)
def_tip = mt_registered_nodes[node_tip.name]
pos_hash = mt_hash_node_position(pos_under)
meta = mt_get_meta(pos_under)
-- When placed on surface.
else
local new_kelp = false
@ -452,18 +570,15 @@ function kelp.kelp_on_place(itemstack, placer, pointed_thing)
return itemstack
end
-- NOTE: Uncomment this to use nodetimers
-- Register nodetimer
pos_hash, meta = kelp.surface_register_nodetimer(pos_under)
pos_tip = pos_above
node_tip = mt_get_node(pos_above)
def_tip = mt_registered_nodes[node_tip.name]
end
-- New kelp must also be submerged in water.
local downward_flowing = kelp.is_downward_flowing(pos_tip, node_tip, def_tip)
if not (kelp.is_submerged(node_tip, def_tip) or downward_flowing) then
local downward_flowing = kelp.is_downward_flowing(pos_tip, node_tip)
local submerged = kelp.is_submerged(node_tip)
if not submerged then
return itemstack
end
@ -472,19 +587,46 @@ function kelp.kelp_on_place(itemstack, placer, pointed_thing)
if def_node.sounds then
mt_sound_play(def_node.sounds.place, { gain = 0.5, pos = pos_under }, true)
end
kelp.next_grow(pos_under, node_under, pos_tip, def_tip, downward_flowing)
kelp.next_height(pos_under, node_under, pos_tip, node_tip, def_tip, submerged, downward_flowing)
if not mt_is_creative_enabled(player_name) then
itemstack:take_item()
end
-- Reroll age
local age = math_random(0, kelp.MAX_AGE-1)
meta:set_int("mcl_ocean:kelp_age", age)
kelp.age_pool[pos_hash] = age
return itemstack
end
function kelp.lbm_register_nodetimer(pos, node)
local pos_hash = mt_hash_node_position(pos)
kelp.init_age(pos, nil, pos_hash)
kelp.init_timer(pos, pos_hash)
end
local gstep_time = 0
function kelp.globalstep(dtime)
if #kelp.age_queue > kelp.MAX_AGE_QUEUE then
kelp.store_meta()
end
gstep_time = gstep_time + dtime
if gstep_time < kelp.META_TICK then
return
end
gstep_time = 0
if #kelp.age_queue > 0 then
kelp.store_meta()
end
end
function kelp.on_shutdown()
if #kelp.age_queue > 0 then
kelp.store_meta()
end
end
--------------------------------------------------------------------------------
-- Kelp registration API
--------------------------------------------------------------------------------
@ -526,9 +668,10 @@ kelp.surface_deftemplate = {
groups = { dig_immediate = 3, deco_block = 1, plant = 1, kelp = 1, },
--sounds = sounds,
--node_dig_prediction = nodename,
after_dig_node = kelp.surface_after_dig_node,
on_construct = kelp.surface_on_construct,
on_destruct = kelp.surface_on_destruct,
on_dig = kelp.surface_on_dig,
after_dig_node = kelp.surface_after_dig_node,
on_timer = kelp.surface_on_timer,
mesecon = { on_mvps_move = kelp.surface_on_mvps_move, },
drop = "", -- drops are handled in on_dig
@ -573,7 +716,7 @@ function kelp.register_kelp_surface(surface, surface_deftemplate, surface_docs)
doc.add_entry_alias("nodes", surface_docs.entry_id_orig, "nodes", surfacename)
end
local sounds = table.copy(def.sounds)
local sounds = table_copy(def.sounds)
sounds.dig = kelp.leaf_sounds.dig
sounds.dug = kelp.leaf_sounds.dug
sounds.place = kelp.leaf_sounds.place
@ -592,9 +735,9 @@ end
-- Kelp surfaces nodes ---------------------------------------------------------
-- Dirt must be registered first, for the docs
kelp.register_kelp_surface(kelp.surfaces[1], table.copy(kelp.surface_deftemplate), kelp.surface_docs)
kelp.register_kelp_surface(kelp.surfaces[1], table_copy(kelp.surface_deftemplate), kelp.surface_docs)
for i=2, #kelp.surfaces do
kelp.register_kelp_surface(kelp.surfaces[i], table.copy(kelp.surface_deftemplate), kelp.surface_docs)
kelp.register_kelp_surface(kelp.surfaces[i], table_copy(kelp.surface_deftemplate), kelp.surface_docs)
end
-- Kelp item -------------------------------------------------------------------
@ -676,15 +819,18 @@ minetest.register_craft({
-- ABMs ------------------------------------------------------------------------
-- NOTE: Uncomment this to use nodetimers
minetest.register_lbm({
label = "Kelp timer registration",
name = "mcl_ocean:kelp_timer_registration",
label = "Kelp initialise",
name = "mcl_ocean:kelp_init",
nodenames = { "group:kelp" },
run_at_every_load = true, -- so old kelps are also registered
action = kelp.surface_register_nodetimer,
run_at_every_load = true, -- so old kelps are also initialised
action = kelp.lbm_register_nodetimer,
})
minetest.register_globalstep(kelp.globalstep)
minetest.register_on_shutdown(kelp.on_shutdown)
-- NOTE: Uncomment this to use ABMs
-- minetest.register_abm({
-- label = "Kelp drops",