techpack/tubelib/distributor.lua

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2018-03-10 22:14:57 +01:00
--[[
Tube Library
============
Copyright (C) 2017 Joachim Stolberg
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.
The Distributor supports the following messages:
- topic = "on", payload = nil
- topic = "off" , payload = nil
- topic = "state", payload = nil,
response is "running", "stopped", "standby", or "not supported"
]]--
local NUM_FILTER_ELEM = 6
local NUM_FILTER_SLOTS = 4
local TICKS_TO_SLEEP = 5
local CYCLE_TIME = 2
local STOP_STATE = 0
local STANDBY_STATE = -1
local FAULT_STATE = -2
-- 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 flat table with all items
local function invlist_entries_as_list(list)
local res = {}
for _,items in ipairs(list) do
local name = items:get_name()
local count = items:get_count()
if name ~= "" then
for i = 1,count do
res[#res+1] = name
end
end
end
return res
end
local function AddToTbl(kvTbl, new_items)
for _, l in ipairs(new_items) do
kvTbl[l] = true
end
return kvTbl
end
local function distributor_formspec(state, filter)
return "size[10,8.5]"..
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;".. tubelib.state_button(state) ..";button;]"..
"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[3.6,0;0.3,1;tubelib_red.png]"..
"image[3.6,1;0.3,1;tubelib_green.png]"..
"image[3.6,2;0.3,1;tubelib_blue.png]"..
"image[3.6,3;0.3,1;tubelib_yellow.png]"..
"list[context;red;4,0;6,1;]"..
"list[context;green;4,1;6,1;]"..
"list[context;blue;4,2;6,1;]"..
"list[context;yellow;4,3;6,1;]"..
"list[current_player;main;1,4.5;8,4;]"..
"listring[context;src]"..
"listring[current_player;main]"
end
local function allow_metadata_inventory_put(pos, listname, index, stack, player)
local meta = minetest.get_meta(pos)
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
return stack:get_count()
elseif invlist_num_entries(list) < NUM_FILTER_ELEM then
return 1
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)
local meta = minetest.get_meta(pos)
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)
local meta = minetest.get_meta(pos)
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
}
end
local function start_the_machine(pos)
local node = minetest.get_node(pos)
local meta = minetest.get_meta(pos)
local number = meta:get_string("number")
meta:set_int("running", TICKS_TO_SLEEP)
node.name = "tubelib:distributor_active"
minetest.swap_node(pos, node)
meta:set_string("infotext", "Tubelib Distributor "..number..": running")
local filter = minetest.deserialize(meta:get_string("filter"))
meta:set_string("formspec", distributor_formspec(tubelib.RUNNING, filter))
minetest.get_node_timer(pos):start(CYCLE_TIME)
return false
end
local function stop_the_machine(pos)
local node = minetest.get_node(pos)
local meta = minetest.get_meta(pos)
local number = meta:get_string("number")
meta:set_int("running", STOP_STATE)
node.name = "tubelib:distributor"
minetest.swap_node(pos, node)
meta:set_string("infotext", "Tubelib Distributor "..number..": stopped")
local filter = minetest.deserialize(meta:get_string("filter"))
meta:set_string("formspec", distributor_formspec(tubelib.STOPPED, filter))
minetest.get_node_timer(pos):stop()
return false
end
local function goto_sleep(pos)
local node = minetest.get_node(pos)
local meta = minetest.get_meta(pos)
local number = meta:get_string("number")
meta:set_int("running", STANDBY_STATE)
node.name = "tubelib:distributor"
minetest.swap_node(pos, node)
meta:set_string("infotext", "Tubelib Distributor "..number..": standby")
local filter = minetest.deserialize(meta:get_string("filter"))
meta:set_string("formspec", distributor_formspec(tubelib.STANDBY, filter))
minetest.get_node_timer(pos):start(CYCLE_TIME * TICKS_TO_SLEEP)
return false
end
-- move items to the output slots
local function keep_running(pos, elapsed)
local meta = minetest.get_meta(pos)
local running = meta:get_int("running") - 1
local player_name = meta:get_string("player_name")
--print("running", running)
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)
-- 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>,...}
local names = FilterCache[hash].kvSide2ItemNames[side]
if names == nil then
-- this slot is empty
return true
end
local busy = false
-- move items from configured filters to the output
if next(names) then
for _,name in ipairs(names) do
if kvSrc[name] then
local item = tubelib.get_this_item(meta, "src", kvSrc[name]) -- <<=== tubelib
if item then
if not tubelib.push_items(pos, side, item, player_name) then -- <<=== tubelib
tubelib.put_item(meta, "src", item)
else
busy = true
end
end
end
end
end
-- move additional items from unconfigured filters to the output
if next(names) == nil then
for name,_ in pairs(kvSrc) do
if kvFilterItemNames[name] == nil then -- not in the filter so far?
local item = tubelib.get_this_item(meta, "src", kvSrc[name]) -- <<=== tubelib
if item then
if not tubelib.push_items(pos, side, item, player_name) then -- <<=== tubelib
tubelib.put_item(meta, "src", item)
else
busy = true
end
end
end
end
end
if busy == true then
if running <= 0 then
return start_the_machine(pos)
else
running = TICKS_TO_SLEEP
end
else
if running <= 0 then
return goto_sleep(pos)
end
end
meta:set_int("running", running)
return true
end
local function on_receive_fields(pos, formname, fields, player)
if minetest.is_protected(pos, player:get_player_name()) then
return
end
local meta = minetest.get_meta(pos)
local running = meta:get_int("running")
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)
if fields.button ~= nil then
if running > STOP_STATE or running == FAULT_STATE then
stop_the_machine(pos)
else
start_the_machine(pos)
end
else
meta:set_string("formspec", distributor_formspec(tubelib.state(running), filter))
end
end
minetest.register_node("tubelib:distributor", {
description = "Tubelib Distributor",
tiles = {
-- up, down, right, left, back, front
'tubelib_distributor.png',
'tubelib_distributor.png',
'tubelib_distributor_yellow.png',
'tubelib_distributor_green.png',
"tubelib_distributor_red.png",
"tubelib_distributor_blue.png",
},
after_place_node = function(pos, placer)
local number = tubelib.add_node(pos, "tubelib:distributor") -- <<=== tubelib
local meta = minetest.get_meta(pos)
meta:set_string("player_name", placer:get_player_name())
local filter = {false,false,false,false}
meta:set_string("formspec", distributor_formspec(tubelib.STOPPED, filter))
meta:set_string("filter", minetest.serialize(filter))
meta:set_string("number", number)
meta:set_string("infotext", "Tubelib Distributor "..number..": stopped")
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)
end,
on_receive_fields = on_receive_fields,
on_dig = function(pos, node, puncher, pointed_thing)
if minetest.is_protected(pos, puncher:get_player_name()) then
return
end
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
if inv:is_empty("src") then
minetest.node_dig(pos, node, puncher, pointed_thing)
tubelib.remove_node(pos) -- <<=== tubelib
end
end,
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,
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,
},
},
'tubelib_distributor.png',
'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,
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(),
})
minetest.register_craft({
output = "tubelib:distributor 2",
recipe = {
{"group:wood", "default:steel_ingot", "group:wood"},
{"tubelib:tube1", "default:mese_crystal", "tubelib:tube1"},
{"group:wood", "default:steel_ingot", "group:wood"},
},
})
--------------------------------------------------------------- tubelib
tubelib.register_node("tubelib:distributor", {"tubelib:distributor_active"}, {
on_pull_item = function(pos, side)
local meta = minetest.get_meta(pos)
return tubelib.get_item(meta, "src")
end,
on_push_item = function(pos, side, item)
local meta = minetest.get_meta(pos)
return tubelib.put_item(meta, "src", item)
end,
on_unpull_item = function(pos, side, item)
local meta = minetest.get_meta(pos)
return tubelib.put_item(meta, "src", item)
end,
on_recv_message = function(pos, topic, payload)
if topic == "on" then
return start_the_machine(pos)
elseif topic == "off" then
return stop_the_machine(pos)
elseif topic == "state" then
local meta = minetest.get_meta(pos)
local running = meta:get_int("running")
return tubelib.statestring(running)
else
return "unsupported"
end
end,
})
--------------------------------------------------------------- tubelib