pipeworks/autocrafter.lua

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local autocrafterCache = {} -- caches some recipe data to avoid to call the slow function minetest.get_craft_result() every second
local function make_inventory_cache(invlist)
local l = {}
for _, stack in ipairs(invlist) do
l[stack:get_name()] = (l[stack:get_name()] or 0) + stack:get_count()
end
return l
end
local function get_cached_craft(pos)
local hash = minetest.hash_node_position(pos)
return hash, autocrafterCache[hash]
end
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local function autocraft(inventory, pos)
if not inventory then return end
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local recipe = inventory:get_list("recipe")
if not recipe then return end
local cached_recipe
local output
local decremented_input
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local hash, craft = get_cached_craft(pos)
if craft == nil then
cached_recipe = {}
for i = 1, 9 do
cached_recipe[i] = recipe[i]
recipe[i] = ItemStack({name = recipe[i]:get_name(), count = 1})
end
output, decremented_input = minetest.get_craft_result({method = "normal", width = 3, items = recipe})
autocrafterCache[hash] = {recipe = recipe, output = output, decremented_input = decremented_input}
else
cached_recipe, output, decremented_input = craft.recipe, craft.output, craft.decremented_input
local recipe_changed = false
for i = 1, 9 do
local recipe_entry, cached_recipe_entry = recipe[i], cached_recipe[i]
if recipe_entry:get_name() ~= cached_recipe_entry:get_name()
or recipe_entry:get_count() ~= cached_recipe_entry:get_count() then
recipe_changed = true
break
end
end
if recipe_changed then
for i = 1, 9 do
cached_recipe[i] = recipe[i]
recipe[i] = ItemStack({name = recipe[i]:get_name(), count = 1})
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end
output, decremented_input = minetest.get_craft_result({method = "normal", width = 3, items = recipe})
autocrafterCache[hash] = {recipe = recipe, output = output, decremented_input = decremented_input}
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end
end
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if output.item:is_empty() then return end
output = output.item
if not inventory:room_for_item("dst", output) then return end
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local to_use = {}
for _, item in ipairs(recipe) do
if item~= nil and not item:is_empty() then
local item_name = item:get_name()
if to_use[item_name] == nil then
to_use[item_name] = 1
else
to_use[item_name] = to_use[item_name]+1
end
end
end
local invcache = make_inventory_cache(inventory:get_list("src"))
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for itemname, number in pairs(to_use) do
if (not invcache[itemname]) or invcache[itemname] < number then return end
end
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for itemname, number in pairs(to_use) do
for i = 1, number do -- We have to do that since remove_item does not work if count > stack_max
inventory:remove_item("src", ItemStack(itemname))
end
end
inventory:add_item("dst", output)
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for i = 1, 9 do
inventory:add_item("dst", decremented_input.items[i])
end
end
local function update_autocrafter(pos)
local meta = minetest.get_meta(pos)
if meta:get_string("virtual_items") == "" then
meta:set_string("virtual_items", "1")
local inv = meta:get_inventory()
for idx, stack in ipairs(inv:get_list("recipe")) do
minetest.item_drop(stack, "", pos)
stack:set_count(1)
stack:set_wear(0)
inv:set_stack("recipe", idx, stack)
end
end
end
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minetest.register_node("pipeworks:autocrafter", {
description = "Autocrafter",
drawtype = "normal",
tiles = {"pipeworks_autocrafter.png"},
groups = {snappy = 3, tubedevice = 1, tubedevice_receiver = 1},
tube = {insert_object = function(pos, node, stack, direction)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
return inv:add_item("src", stack)
end,
can_insert = function(pos, node, stack, direction)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
return inv:room_for_item("src", stack)
end,
input_inventory = "dst",
connect_sides = {left = 1, right = 1, front = 1, back = 1, top = 1, bottom = 1}},
on_construct = function(pos)
local meta = minetest.get_meta(pos)
meta:set_string("formspec",
"size[8,11]"..
"list[current_name;recipe;0,0;3,3;]"..
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"list[current_name;src;0,3.5;8,3;]"..
"list[current_name;dst;4,0;4,3;]"..
"list[current_player;main;0,7;8,4;]")
meta:set_string("infotext", "Autocrafter")
meta:set_string("virtual_items", "1")
local inv = meta:get_inventory()
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inv:set_size("src", 3*8)
inv:set_size("recipe", 3*3)
inv:set_size("dst", 4*3)
end,
on_punch = update_autocrafter,
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can_dig = function(pos, player)
update_autocrafter(pos)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
return (inv:is_empty("src") and inv:is_empty("dst"))
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end,
after_place_node = function(pos)
pipeworks.scan_for_tube_objects(pos)
end,
after_dig_node = function(pos)
pipeworks.scan_for_tube_objects(pos)
autocrafterCache[minetest.hash_node_position(pos)] = nil
end,
allow_metadata_inventory_put = function(pos, listname, index, stack, player)
update_autocrafter(pos)
local inv = minetest.get_meta(pos):get_inventory()
if listname == "recipe" then
local stack_copy = ItemStack(stack)
stack_copy:set_count(1)
inv:set_stack(listname, index, stack_copy)
return 0
else
return stack:get_count()
end
end,
allow_metadata_inventory_take = function(pos, listname, index, stack, player)
update_autocrafter(pos)
local inv = minetest.get_meta(pos):get_inventory()
if listname == "recipe" then
inv:set_stack(listname, index, ItemStack(""))
return 0
else
return stack:get_count()
end
end,
allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
update_autocrafter(pos)
local inv = minetest.get_meta(pos):get_inventory()
local stack = inv:get_stack(from_list, from_index)
stack:set_count(count)
if from_list == "recipe" then
inv:set_stack(from_list, from_index, ItemStack(""))
return 0
elseif to_list == "recipe" then
local stack_copy = ItemStack(stack)
stack_copy:set_count(1)
inv:set_stack(to_list, to_index, stack_copy)
return 0
else
return stack:get_count()
end
end,
})
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minetest.register_abm({nodenames = {"pipeworks:autocrafter"}, interval = 1, chance = 1,
action = function(pos, node)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
autocraft(inv, pos)
end
})