minetest-mods/unified_inventory
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Code Issues Releases Wiki Activity

Implement new crafting algorithm (#132)

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* Implement new crafting algorithm

* Take craft width into account when creating craft index
* Fix moving logic, correctly check for empty stacks
* Return early when there's not enough items for craft
* Bound match_count with smallest stack_max value, take from inventory only if needed
* Continue if item can't be moved to the current position.
* Fix metadata loss and. Improve placement for some corner cases.
* Drop items from oversized stacks on the ground
* Place items exactly as displayed in the guide
* One source list one destination. Try to take from destination list first
This commit is contained in:
Andrey Kozlovskiy
2019-10-26 18:22:33 +03:00
committed by SmallJoker
parent 4a1414bacc
commit ca6d9a10df
4 changed files with 413 additions and 97 deletions
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99
register.lua
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@ -441,65 +441,6 @@ local function craftguide_giveme(player, formname, fields)
player_inv:add_item("main", {name = output, count = amount})
end
-- Takes any stack from "main" where the `amount` of `needed_item` may fit
-- into the given crafting stack (`craft_item`)
local function craftguide_move_stacks(inv, craft_item, needed_item, amount)
if craft_item:get_count() >= amount then
return
end
local get_item_group = minetest.get_item_group
local group = needed_item:match("^group:(.+)")
if group then
if not craft_item:is_empty() then
-- Source item must be the same to fill
if get_item_group(craft_item:get_name(), group) ~= 0 then
needed_item = craft_item:get_name()
else
-- TODO: Maybe swap unmatching "craft" items
-- !! Would conflict with recursive function call
return
end
else
-- Take matching group from the inventory (biggest stack)
local main = inv:get_list("main")
local max_found = 0
for i, stack in ipairs(main) do
if stack:get_count() > max_found and
get_item_group(stack:get_name(), group) ~= 0 then
needed_item = stack:get_name()
max_found = stack:get_count()
if max_found >= amount then
break
end
end
end
end
else
if not craft_item:is_empty() and
craft_item:get_name() ~= needed_item then
return -- Item must be identical
end
end
needed_item = ItemStack(needed_item)
local to_take = math.min(amount, needed_item:get_stack_max())
to_take = to_take - craft_item:get_count()
if to_take <= 0 then
return -- Nothing to do
end
needed_item:set_count(to_take)
local taken = inv:remove_item("main", needed_item)
local leftover = taken:add_item(craft_item)
if not leftover:is_empty() then
-- Somehow failed to add the existing "craft" item. Undo the action.
inv:add_item("main", leftover)
return taken
end
return taken
end
local function craftguide_craft(player, formname, fields)
local amount
for k, v in pairs(fields) do
@ -508,17 +449,14 @@ local function craftguide_craft(player, formname, fields)
end
if not amount then return end
amount = tonumber(amount) or 99 -- fallback for "all"
if amount <= 0 or amount > 99 then return end
amount = tonumber(amount) or -1 -- fallback for "all"
if amount == 0 or amount < -1 or amount > 99 then return end
local player_name = player:get_player_name()
local output = unified_inventory.current_item[player_name] or ""
if output == "" then return end
local player_inv = player:get_inventory()
local craft_list = player_inv:get_list("craft")
local crafts = unified_inventory.crafts_for[
unified_inventory.current_craft_direction[player_name]][output] or {}
if #crafts == 0 then return end
@ -528,38 +466,7 @@ local function craftguide_craft(player, formname, fields)
local craft = crafts[alternate]
if craft.width > 3 then return end
local needed = craft.items
local width = craft.width
if width == 0 then
-- Shapeless recipe
width = 3
end
-- To spread the items evenly
local STEPSIZE = math.ceil(math.sqrt(amount) / 5) * 5
local current_count = 0
repeat
current_count = math.min(current_count + STEPSIZE, amount)
local index = 1
for y = 1, 3 do
for x = 1, width do
local needed_item = needed[index]
if needed_item then
local craft_index = ((y - 1) * 3) + x
local craft_item = craft_list[craft_index]
local newitem = craftguide_move_stacks(player_inv,
craft_item, needed_item, current_count)
if newitem then
craft_list[craft_index] = newitem
end
end
index = index + 1
end
end
until current_count == amount
player_inv:set_list("craft", craft_list)
unified_inventory.craftguide_match_craft(player, "main", "craft", craft, amount)
unified_inventory.set_inventory_formspec(player, "craft")
end