private void Model_NeedExchangeWeapon(IWeapon weapon)
{
var needExchange = view.AskSwordReplace();
if (needExchange)
{
var index = view.AskInventoryBagIndex(1, Inventory.MaxWeaponCount);
model.ExchangeWeapon(weapon, index);
}
view.ShowInventory(model.Inventory);
}