225 lines
7.0 KiB
Lua
225 lines
7.0 KiB
Lua
local autocrafterCache = {} -- caches some recipe data to avoid to call the slow function minetest.get_craft_result() every second
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local craft_time = 1
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local function count_index(invlist)
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local index = {}
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for _, stack in pairs(invlist) do
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if not stack:is_empty() then
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local stack_name = stack:get_name()
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index[stack_name] = (index[stack_name] or 0) + stack:get_count()
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end
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end
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return index
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end
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local function get_craft(pos, inventory, hash)
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local hash = hash or minetest.hash_node_position(pos)
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local craft = autocrafterCache[hash]
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if not craft then
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if inventory:is_empty("recipe") then return nil end
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local recipe = inventory:get_list("recipe")
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local output, decremented_input = minetest.get_craft_result({method = "normal", width = 3, items = recipe})
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craft = {recipe = recipe, consumption=count_index(recipe), output = output, decremented_input = decremented_input}
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autocrafterCache[hash] = craft
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end
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-- only return crafts that have an actual result
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if not craft.output.item:is_empty() then
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return craft
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end
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end
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-- note, that this function assumes allready being updated to virtual items
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-- and doesn't handle recipes with stacksizes > 1
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local function on_recipe_change(pos, inventory)
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-- if we emptied the grid, there's no point in keeping it running or cached
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if inventory:is_empty("recipe") then
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minetest.get_node_timer(pos):stop()
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autocrafterCache[minetest.hash_node_position(pos)] = nil
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return
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end
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local recipe_changed = false
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local recipe = inventory:get_list("recipe")
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local hash = minetest.hash_node_position(pos)
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local craft = autocrafterCache[hash]
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if craft then
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-- check if it changed
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local cached_recipe = craft.recipe
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for i = 1, 9 do
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if recipe[i]:get_name() ~= cached_recipe[i]:get_name() then
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autocrafterCache[hash] = nil -- invalidate recipe
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craft = nil
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break
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end
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end
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end
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local timer = minetest.get_node_timer(pos)
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if not timer:is_started() then
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timer:start(craft_time)
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end
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end
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local function on_inventory_change(pos, inventory)
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local timer = minetest.get_node_timer(pos)
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if not timer:is_started() then
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timer:start(craft_time)
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end
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end
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local function autocraft(inventory, craft)
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if not craft then return false end
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local output_item = craft.output.item
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-- check if we have enough room in dst
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if not inventory:room_for_item("dst", output_item) then return false end
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local consumption = craft.consumption
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local inv_index = count_index(inventory:get_list("src"))
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-- check if we have enough material available
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for itemname, number in pairs(consumption) do
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if (not inv_index[itemname]) or inv_index[itemname] < number then return false end
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end
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-- consume material
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for itemname, number in pairs(consumption) do
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for i = 1, number do -- We have to do that since remove_item does not work if count > stack_max
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inventory:remove_item("src", ItemStack(itemname))
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end
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end
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-- craft the result into the dst inventory and add any "replacements" as well
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inventory:add_item("dst", output_item)
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for i = 1, 9 do
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inventory:add_item("dst", craft.decremented_input.items[i])
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end
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return true
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end
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-- returns false to stop the timer, true to continue running
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-- is started only from start_autocrafter(pos) after sanity checks and cached recipe
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local function run_autocrafter(pos, elapsed)
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local meta = minetest.get_meta(pos)
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local inventory = meta:get_inventory()
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local craft = get_craft(pos, inventory)
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for step = 1, math.floor(elapsed/craft_time) do
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local continue = autocraft(inventory, craft)
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if not continue then return false end
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end
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return true
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end
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local function update_autocrafter(pos)
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local meta = minetest.get_meta(pos)
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if meta:get_string("virtual_items") == "" then
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meta:set_string("virtual_items", "1")
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local inv = meta:get_inventory()
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for idx, stack in ipairs(inv:get_list("recipe")) do
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minetest.item_drop(stack, "", pos)
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stack:set_count(1)
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stack:set_wear(0)
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inv:set_stack("recipe", idx, stack)
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end
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on_recipe_change(pos, inv)
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end
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end
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minetest.register_node("pipeworks:autocrafter", {
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description = "Autocrafter",
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drawtype = "normal",
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tiles = {"pipeworks_autocrafter.png"},
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groups = {snappy = 3, tubedevice = 1, tubedevice_receiver = 1},
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tube = {insert_object = function(pos, node, stack, direction)
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local meta = minetest.get_meta(pos)
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local inv = meta:get_inventory()
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local added = inv:add_item("src", stack)
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on_inventory_change(pos, inv)
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return added
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end,
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can_insert = function(pos, node, stack, direction)
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local meta = minetest.get_meta(pos)
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local inv = meta:get_inventory()
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return inv:room_for_item("src", stack)
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end,
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input_inventory = "dst",
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connect_sides = {left = 1, right = 1, front = 1, back = 1, top = 1, bottom = 1}},
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on_construct = function(pos)
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local meta = minetest.get_meta(pos)
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meta:set_string("formspec",
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"size[8,11]"..
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"list[current_name;recipe;0,0;3,3;]"..
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"list[current_name;src;0,3.5;8,3;]"..
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"list[current_name;dst;4,0;4,3;]"..
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"list[current_player;main;0,7;8,4;]")
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meta:set_string("infotext", "Autocrafter")
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meta:set_string("virtual_items", "1")
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local inv = meta:get_inventory()
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inv:set_size("src", 3*8)
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inv:set_size("recipe", 3*3)
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inv:set_size("dst", 4*3)
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end,
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on_punch = update_autocrafter,
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can_dig = function(pos, player)
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update_autocrafter(pos)
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local meta = minetest.get_meta(pos)
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local inv = meta:get_inventory()
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return (inv:is_empty("src") and inv:is_empty("dst"))
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end,
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after_place_node = function(pos)
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pipeworks.scan_for_tube_objects(pos)
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end,
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after_dig_node = function(pos)
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pipeworks.scan_for_tube_objects(pos)
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autocrafterCache[minetest.hash_node_position(pos)] = nil
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end,
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allow_metadata_inventory_put = function(pos, listname, index, stack, player)
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update_autocrafter(pos)
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local inv = minetest.get_meta(pos):get_inventory()
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if listname == "recipe" then
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local stack_copy = ItemStack(stack)
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stack_copy:set_count(1)
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inv:set_stack(listname, index, stack_copy)
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on_recipe_change(pos, inv)
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return 0
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else
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on_inventory_change(pos, inv)
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return stack:get_count()
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end
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end,
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allow_metadata_inventory_take = function(pos, listname, index, stack, player)
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update_autocrafter(pos)
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local inv = minetest.get_meta(pos):get_inventory()
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if listname == "recipe" then
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inv:set_stack(listname, index, ItemStack(""))
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on_recipe_change(pos, inv)
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return 0
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else
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on_inventory_change(pos, inv)
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return stack:get_count()
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end
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end,
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allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player)
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update_autocrafter(pos)
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local inv = minetest.get_meta(pos):get_inventory()
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local stack = inv:get_stack(from_list, from_index)
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stack:set_count(count)
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if from_list == "recipe" then
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inv:set_stack(from_list, from_index, ItemStack(""))
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on_recipe_change(pos, inv)
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return 0
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elseif to_list == "recipe" then
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local stack_copy = ItemStack(stack)
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stack_copy:set_count(1)
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inv:set_stack(to_list, to_index, stack_copy)
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on_recipe_change(pos, inv)
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return 0
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else
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on_inventory_change(pos, inv)
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return stack:get_count()
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end
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end,
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on_timer = run_autocrafter
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})
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