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util.lua
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util.lua
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local v_new = vector.new
local error_behavior = smartshop.settings.error_behavior
local equals = futil.equals
local pairs_by_key = futil.table.pairs_by_key
local util = {}
function util.error(messagefmt, ...)
local message = messagefmt:format(...)
if error_behavior == "crash" then
error(message)
elseif error_behavior == "announce" then
minetest.chat_send_all(message)
end
smartshop.log("error", message)
end
function util.string_to_pos(pos_as_string)
-- can't just use minetest.string_to_pos, for sake of backward compatibility
if not pos_as_string or type(pos_as_string) ~= "string" then
return nil
end
local x, y, z = pos_as_string:match("^%s*%(?%s*(%-?%d+)[%s,]+(%-?%d+)[%s,]+(%-?%d+)%s*%)?%s*$")
if x and y and z then
return v_new(tonumber(x), tonumber(y), tonumber(z))
end
end
function util.player_is_admin(player_or_name)
return minetest.check_player_privs(player_or_name, {[smartshop.settings.admin_shop_priv] = true})
end
function util.check_shop_add_remainder(shop, remainder)
if remainder:is_empty() then
return false
end
local owner = shop:get_owner()
local pos_as_string = shop:get_pos_as_string()
util.error("ERROR: %s's smartshop @ %s lost %q while adding", owner, pos_as_string, remainder:to_string())
return true
end
function util.check_shop_remove_remainder(shop, remainder, expected)
if remainder:get_count() == expected:get_count() then
return false
end
local owner = shop:get_owner()
local pos_as_string = shop:get_pos_as_string()
util.error("ERROR: %s's smartshop @ %s lost %q of %q while removing",
owner, pos_as_string, remainder:to_string(), expected:to_string())
return true
end
function util.check_player_add_remainder(player_inv, shop, remainder)
if remainder:get_count() == 0 then
return false
end
local player_name = player_inv.name
util.error("ERROR: %s lost %q on add using %'s shop @ %s",
player_name, remainder:to_string(), shop:get_owner(), shop:get_pos_as_string())
return true
end
function util.check_player_remove_remainder(player_inv, shop, remainder, expected)
if remainder:get_count() == expected:get_count() then
return false
end
local player_name = player_inv.name
util.error("ERROR: %s lost %q of %q on remove from %'s shop @ %s",
player_name, remainder:to_string(), expected:to_string(), shop:get_owner(), shop:get_pos_as_string())
return true
end
function util.remove_stack_with_meta(inv, list_name, stack)
local stack_name = stack:get_name()
local stack_count = stack:get_count()
local stack_wear = stack:get_wear()
local stack_meta = stack:get_meta():to_table()
local list_table = inv:get_list(list_name)
for _, i_stack in ipairs(list_table) do
local i_name = i_stack:get_name()
local i_count = i_stack:get_count()
local i_wear = i_stack:get_wear()
local i_meta = i_stack:get_meta():to_table()
if stack_name == i_name and stack_wear == i_wear and equals(stack_meta, i_meta) then
if i_count >= stack_count then
i_count = i_count - stack_count
stack_count = 0
i_stack:set_count(i_count)
break
else
stack_count = stack_count - i_count
i_stack:clear(0)
end
end
end
inv:set_list(list_name, list_table)
-- returns the items that were actually removed
local removed = ItemStack(stack)
removed:set_count(stack:get_count() - stack_count)
return removed
end
function util.get_stack_key(stack, match_meta)
if match_meta then
local key_stack = ItemStack(stack) -- clone
local name = key_stack:get_name()
local wear = key_stack:get_wear()
local meta_parts = {}
for key, value in pairs_by_key(key_stack:get_meta():to_table().fields) do
table.insert(meta_parts, ("%s=%s"):format(key, value))
end
return ("%s %s %s"):format(name, wear, table.concat(meta_parts, ","))
else
return stack:get_name()
end
end
smartshop.util = util