techpack/tubelib/distributor.lua

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--[[
Tube Library
============
Copyright (C) 2017-2019 Joachim Stolberg
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LGPLv2.1+
See LICENSE.txt for more information
distributor.lua:
A more complex node acting as server and client.
This node claims a position number and registers its message and items interface.
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The Distributor is based on the class NodeStates and supports the following messages:
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- topic = "on", payload = nil
- topic = "off" , payload = nil
- topic = "state", payload = nil,
response is "running", "stopped", "standby", "defect", or "not supported"
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]]--
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-- for lazy programmers
local S = function(pos) if pos then return minetest.pos_to_string(pos) end end
local P = minetest.string_to_pos
local M = minetest.get_meta
local MAX_NUM_PER_CYC = 20 -- maximum number of items, which can be pushed per slot
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local NUM_FILTER_ELEM = 6
local NUM_FILTER_SLOTS = 4
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local COUNTDOWN_TICKS = 8
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local STANDBY_TICKS = 4
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local CYCLE_TIME = 2
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local function formspec(self, pos, meta)
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local filter = minetest.deserialize(meta:get_string("filter")) or {false,false,false,false}
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return "size[10.5,8.5]"..
default.gui_bg..
default.gui_bg_img..
default.gui_slots..
"list[context;src;0,0;2,4;]"..
"image[2,1.5;1,1;tubelib_gui_arrow.png]"..
"image_button[2,3;1,1;"..self:get_state_button_image(meta)..";state_button;]"..
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"checkbox[3,0;filter1;On;"..dump(filter[1]).."]"..
"checkbox[3,1;filter2;On;"..dump(filter[2]).."]"..
"checkbox[3,2;filter3;On;"..dump(filter[3]).."]"..
"checkbox[3,3;filter4;On;"..dump(filter[4]).."]"..
"image[4,0;0.3,1;tubelib_red.png]"..
"image[4,1;0.3,1;tubelib_green.png]"..
"image[4,2;0.3,1;tubelib_blue.png]"..
"image[4,3;0.3,1;tubelib_yellow.png]"..
"list[context;red;4.5,0;6,1;]"..
"list[context;green;4.5,1;6,1;]"..
"list[context;blue;4.5,2;6,1;]"..
"list[context;yellow;4.5,3;6,1;]"..
"list[current_player;main;1.25,4.5;8,4;]"..
"listring[context;src]"..
"listring[current_player;main]"
end
local State = tubelib.NodeStates:new({
node_name_passive = "tubelib:distributor",
node_name_active = "tubelib:distributor_active",
node_name_defect = "tubelib:distributor_defect",
infotext_name = "Tubelib Distributor",
cycle_time = CYCLE_TIME,
standby_ticks = STANDBY_TICKS,
aging_factor = 10,
formspec_func = formspec,
})
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-- Return a key/value table with all items and the corresponding stack numbers
local function invlist_content_as_kvlist(list)
local res = {}
for idx,items in ipairs(list) do
local name = items:get_name()
if name ~= "" then
res[name] = idx
end
end
return res
end
-- Return the total number of list entries
local function invlist_num_entries(list)
local res = 0
for _,items in ipairs(list) do
local name = items:get_name()
if name ~= "" then
res = res + items:get_count()
end
end
return res
end
-- Return a gapless table with all items
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local function invlist_entries_as_list(list)
local res = {}
for _,items in ipairs(list) do
if items:get_count() > 0 then
res[#res+1] = {items:get_name(), items:get_count()}
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end
end
return res
end
local function AddToTbl(kvTbl, new_items)
for _, l in ipairs(new_items) do
kvTbl[l[1]] = true
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end
return kvTbl
end
-- return the number of items to be pushed to an unconfigured slot
local function num_items(moved_items, name, filter_item_names, rejected_item_names)
if filter_item_names[name] == nil then -- not configured in one filter?
if moved_items < MAX_NUM_PER_CYC then
return math.min(4, MAX_NUM_PER_CYC - moved_items)
end
end
if rejected_item_names[name] then -- rejected item from another slot?
if moved_items < MAX_NUM_PER_CYC then
return math.min(rejected_item_names[name], MAX_NUM_PER_CYC - moved_items)
end
end
end
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local function allow_metadata_inventory_put(pos, listname, index, stack, player)
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local meta = M(pos)
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local inv = meta:get_inventory()
local list = inv:get_list(listname)
if minetest.is_protected(pos, player:get_player_name()) then
return 0
end
if listname == "src" then
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if State:get_state(M(pos)) == tubelib.STANDBY then
State:start(pos, meta)
end
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return stack:get_count()
elseif invlist_num_entries(list) < MAX_NUM_PER_CYC then
return stack:get_count()
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end
return 0
end
local function allow_metadata_inventory_take(pos, listname, index, stack, player)
if minetest.is_protected(pos, player:get_player_name()) then
return 0
end
return stack:get_count()
end
local function allow_metadata_inventory_move(pos, from_list, from_index, to_list, to_index, count, player)
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local meta = M(pos)
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local inv = meta:get_inventory()
local stack = inv:get_stack(from_list, from_index)
return allow_metadata_inventory_put(pos, to_list, to_index, stack, player)
end
local SlotColors = {"red", "green", "blue", "yellow"}
local Num2Ascii = {"B", "L", "F", "R"} -- color to side translation
local FilterCache = {} -- local cache for filter settings
local function filter_settings(pos)
local hash = minetest.hash_node_position(pos)
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local meta = M(pos)
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local inv = meta:get_inventory()
local filter = minetest.deserialize(meta:get_string("filter")) or {false,false,false,false}
local kvFilterItemNames = {} -- {<item:name> = true,...}
local kvSide2ItemNames = {} -- {"F" = {<item:name>,...},...}
-- collect all filter settings
for idx,slot in ipairs(SlotColors) do
local side = Num2Ascii[idx]
if filter[idx] == true then
local list = inv:get_list(slot)
local filter = invlist_entries_as_list(list)
AddToTbl(kvFilterItemNames, filter)
kvSide2ItemNames[side] = filter
end
end
FilterCache[hash] = {
kvFilterItemNames = kvFilterItemNames,
kvSide2ItemNames = kvSide2ItemNames,
kvRejectedItemNames = {},
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}
end
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-- move items from configured filters to the output
local function distributing(pos, meta)
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local player_name = meta:get_string("player_name")
local slot_idx = meta:get_int("slot_idx") or 1
meta:set_int("slot_idx", (slot_idx + 1) % NUM_FILTER_SLOTS)
local side = Num2Ascii[slot_idx+1]
local listname = SlotColors[slot_idx+1]
local inv = meta:get_inventory()
local list = inv:get_list("src")
local kvSrc = invlist_content_as_kvlist(list)
local counter = minetest.deserialize(meta:get_string("item_counter")) or
{red=0, green=0, blue=0, yellow=0}
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-- calculate the filter settings only once
local hash = minetest.hash_node_position(pos)
if FilterCache[hash] == nil then
filter_settings(pos)
end
-- read data from Cache
-- all filter items as key/value {<item:name> = true,...}
local kvFilterItemNames = FilterCache[hash].kvFilterItemNames
-- filter items of one slot as list {{<item:name>, <num-items>},...}
local items = FilterCache[hash].kvSide2ItemNames[side]
-- rejected items from other filter slots
local rejected = FilterCache[hash].kvRejectedItemNames
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if items == nil then return end
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local moved_items_total = 0
if next(items) then
for _,item in ipairs(items) do
local name, num = item[1], item[2]
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if kvSrc[name] then
local item = tubelib.get_this_item(meta, "src", kvSrc[name], num) -- <<=== tubelib
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if item then
if not tubelib.push_items(pos, side, item, player_name) then -- <<=== tubelib
tubelib.put_item(meta, "src", item)
rejected[name] = num
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else
counter[listname] = counter[listname] + num
moved_items_total = moved_items_total + num
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end
end
end
end
end
-- move additional items from unconfigured filters to the output
if next(items) == nil then
local moved_items = 0
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for name,_ in pairs(kvSrc) do
local num = num_items(moved_items, name, kvFilterItemNames, rejected)
if num then
local item = tubelib.get_this_item(meta, "src", kvSrc[name], num) -- <<=== tubelib
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if item then
if not tubelib.push_items(pos, side, item, player_name) then -- <<=== tubelib
tubelib.put_item(meta, "src", item)
else
counter[listname] = counter[listname] + num
moved_items = moved_items + num
moved_items_total = moved_items_total + num
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end
end
end
end
-- delete list for next slot round
if moved_items > 0 then
FilterCache[hash].kvRejectedItemNames = {}
end
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end
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meta:set_string("item_counter", minetest.serialize(counter))
if moved_items_total > 0 then
State:keep_running(pos, meta, COUNTDOWN_TICKS, moved_items_total)
else
State:idle(pos, meta)
end
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end
-- move items to the output slots
local function keep_running(pos, elapsed)
local meta = M(pos)
distributing(pos, meta)
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return State:is_active(meta)
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end
local function on_receive_fields(pos, formname, fields, player)
if minetest.is_protected(pos, player:get_player_name()) then
return
end
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local meta = M(pos)
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local filter = minetest.deserialize(meta:get_string("filter"))
if fields.filter1 ~= nil then
filter[1] = fields.filter1 == "true"
elseif fields.filter2 ~= nil then
filter[2] = fields.filter2 == "true"
elseif fields.filter3 ~= nil then
filter[3] = fields.filter3 == "true"
elseif fields.filter4 ~= nil then
filter[4] = fields.filter4 == "true"
end
meta:set_string("filter", minetest.serialize(filter))
filter_settings(pos)
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if fields.state_button ~= nil then
State:state_button_event(pos, fields)
else
meta:set_string("formspec", formspec(State, pos, meta))
end
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end
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-- tubelib command to turn on/off filter channels
local function change_filter_settings(pos, slot, val)
local slots = {["red"] = 1, ["green"] = 2, ["blue"] = 3, ["yellow"] = 4}
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local meta = M(pos)
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local filter = minetest.deserialize(meta:get_string("filter"))
local num = slots[slot] or 1
if num >= 1 and num <= 4 then
filter[num] = val == "on"
end
meta:set_string("filter", minetest.serialize(filter))
filter_settings(pos)
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meta:set_string("formspec", formspec(State, pos, meta))
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return true
end
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minetest.register_node("tubelib:distributor", {
description = "Tubelib Distributor",
tiles = {
-- up, down, right, left, back, front
'tubelib_distributor.png',
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'tubelib_front.png',
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'tubelib_distributor_yellow.png',
'tubelib_distributor_green.png',
"tubelib_distributor_red.png",
"tubelib_distributor_blue.png",
},
after_place_node = function(pos, placer)
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local meta = M(pos)
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local number = tubelib.add_node(pos, "tubelib:distributor") -- <<=== tubelib
local filter = {false,false,false,false}
meta:set_string("filter", minetest.serialize(filter))
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State:node_init(pos, number)
meta:set_string("player_name", placer:get_player_name())
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local inv = meta:get_inventory()
inv:set_size('src', 8)
inv:set_size('yellow', 6)
inv:set_size('green', 6)
inv:set_size('red', 6)
inv:set_size('blue', 6)
meta:set_string("item_counter", minetest.serialize({red=0, green=0, blue=0, yellow=0}))
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end,
on_receive_fields = on_receive_fields,
can_dig = function(pos, player)
if minetest.is_protected(pos, player:get_player_name()) then
return false
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end
local inv = M(pos):get_inventory()
return inv:is_empty("src")
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end,
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after_dig_node = function(pos, oldnode, oldmetadata, digger)
tubelib.remove_node(pos) -- <<=== tubelib
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State:after_dig_node(pos, oldnode, oldmetadata, digger)
end,
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allow_metadata_inventory_put = allow_metadata_inventory_put,
allow_metadata_inventory_take = allow_metadata_inventory_take,
allow_metadata_inventory_move = allow_metadata_inventory_move,
on_timer = keep_running,
on_rotate = screwdriver.disallow,
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drop = "",
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paramtype = "light",
sunlight_propagates = true,
paramtype2 = "facedir",
groups = {choppy=2, cracky=2, crumbly=2},
is_ground_content = false,
sounds = default.node_sound_wood_defaults(),
})
minetest.register_node("tubelib:distributor_active", {
description = "Tubelib Distributor",
tiles = {
-- up, down, right, left, back, front
{
image = "tubelib_distributor_active.png",
backface_culling = false,
animation = {
type = "vertical_frames",
aspect_w = 32,
aspect_h = 32,
length = 2.0,
},
},
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'tubelib_front.png',
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'tubelib_distributor_yellow.png',
'tubelib_distributor_green.png',
"tubelib_distributor_red.png",
"tubelib_distributor_blue.png",
},
on_receive_fields = on_receive_fields,
allow_metadata_inventory_put = allow_metadata_inventory_put,
allow_metadata_inventory_take = allow_metadata_inventory_take,
allow_metadata_inventory_move = allow_metadata_inventory_move,
on_timer = keep_running,
on_rotate = screwdriver.disallow,
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paramtype = "light",
sunlight_propagates = true,
paramtype2 = "facedir",
groups = {crumbly=0, not_in_creative_inventory=1},
is_ground_content = false,
sounds = default.node_sound_wood_defaults(),
})
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minetest.register_node("tubelib:distributor_defect", {
description = "Tubelib Distributor",
tiles = {
-- up, down, right, left, back, front
'tubelib_distributor.png',
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'tubelib_front.png',
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'tubelib_distributor_yellow.png^tubelib_defect.png',
'tubelib_distributor_green.png^tubelib_defect.png',
"tubelib_distributor_red.png^tubelib_defect.png",
"tubelib_distributor_blue.png^tubelib_defect.png",
},
after_place_node = function(pos, placer)
local meta = M(pos)
local number = tubelib.add_node(pos, "tubelib:distributor") -- <<=== tubelib
State:node_init(pos, number)
meta:set_string("player_name", placer:get_player_name())
local filter = {false,false,false,false}
meta:set_string("filter", minetest.serialize(filter))
local inv = meta:get_inventory()
inv:set_size('src', 8)
inv:set_size('yellow', 6)
inv:set_size('green', 6)
inv:set_size('red', 6)
inv:set_size('blue', 6)
meta:set_string("item_counter", minetest.serialize({red=0, green=0, blue=0, yellow=0}))
State:defect(pos, meta)
end,
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on_receive_fields = on_receive_fields,
can_dig = function(pos, player)
if minetest.is_protected(pos, player:get_player_name()) then
return false
end
local inv = M(pos):get_inventory()
return inv:is_empty("src")
end,
after_dig_node = function(pos, oldnode, oldmetadata, digger)
tubelib.remove_node(pos) -- <<=== tubelib
end,
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allow_metadata_inventory_put = allow_metadata_inventory_put,
allow_metadata_inventory_take = allow_metadata_inventory_take,
allow_metadata_inventory_move = allow_metadata_inventory_move,
on_rotate = screwdriver.disallow,
paramtype = "light",
sunlight_propagates = true,
paramtype2 = "facedir",
groups = {choppy=2, cracky=2, crumbly=2, not_in_creative_inventory=1},
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is_ground_content = false,
sounds = default.node_sound_wood_defaults(),
})
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minetest.register_craft({
output = "tubelib:distributor 2",
recipe = {
{"group:wood", "default:steel_ingot", "group:wood"},
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{"tubelib:tubeS", "default:mese_crystal", "tubelib:tubeS"},
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{"group:wood", "default:steel_ingot", "group:wood"},
},
})
--------------------------------------------------------------- tubelib
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tubelib.register_node("tubelib:distributor",
{"tubelib:distributor_active", "tubelib:distributor_defect"}, {
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on_pull_item = function(pos, side)
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return tubelib.get_item(M(pos), "src")
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end,
on_push_item = function(pos, side, item)
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return tubelib.put_item(M(pos), "src", item)
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end,
on_unpull_item = function(pos, side, item)
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return tubelib.put_item(M(pos), "src", item)
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end,
on_recv_message = function(pos, topic, payload)
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if topic == "filter" then
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return change_filter_settings(pos, payload.slot, payload.val)
elseif topic == "counter" then
local meta = minetest.get_meta(pos)
return minetest.deserialize(meta:get_string("item_counter")) or
{red=0, green=0, blue=0, yellow=0}
elseif topic == "clear_counter" then
local meta = minetest.get_meta(pos)
meta:set_string("item_counter", minetest.serialize({red=0, green=0, blue=0, yellow=0}))
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else
local resp = State:on_receive_message(pos, topic, payload)
if resp then
return resp
else
return "unsupported"
end
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end
end,
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on_node_load = function(pos)
State:on_node_load(pos)
end,
on_node_repair = function(pos)
return State:on_node_repair(pos)
end,
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})
--------------------------------------------------------------- tubelib