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- Simplifies return values by returning only a single value for success and
    nothing for failure.

  - Stores the inventory list in a local to prevent redundant retrievals.
This commit is contained in:
Foz
2017-01-30 23:15:34 -05:00
parent a11dab9132
commit f5303586ba
1 changed files with 9 additions and 10 deletions
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19
shop.lua
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@@ -6,27 +6,26 @@
local exchange_shop = {} local exchange_shop = {}
-- Tool wear aware replacement for contains_item. -- Tool wear aware replacement for contains_item.
local function list_contains_item(inv, list, stack) local function list_contains_item(inv, listname, stack)
for i, list_stack in pairs(inv:get_list(list)) do local list = inv:get_list(listname)
for i, list_stack in pairs(list) do
if list_stack:get_name() == stack:get_name() and if list_stack:get_name() == stack:get_name() and
list_stack:get_count() >= stack:get_count() and list_stack:get_count() >= stack:get_count() and
list_stack:get_wear() <= stack:get_wear() then list_stack:get_wear() <= stack:get_wear() then
return true, i return i
end end
end end
return false, nil
end end
-- Tool wear aware replacement for remove_item. -- Tool wear aware replacement for remove_item.
local function list_remove_item(inv, list, stack) local function list_remove_item(inv, listname, stack)
local contains, index = list_contains_item(inv, list, stack) local index = list_contains_item(inv, listname, stack)
if contains then if index then
local list_stack = inv:get_stack(list, index) local list_stack = inv:get_stack(listname, index)
local removed_stack = list_stack:take_item(stack:get_count()) local removed_stack = list_stack:take_item(stack:get_count())
inv:set_stack(list, index, list_stack) inv:set_stack(listname, index, list_stack)
return removed_stack return removed_stack
end end
return false
end end
local function get_exchange_shop_formspec(number,pos,title) local function get_exchange_shop_formspec(number,pos,title)