/**
* Get a block.
*
* @param id
*/
@Override
public void fetchItem(BaseItem item) throws BlockBagException {
final int id = item.getType();
final int damage = item.getDamage();
int amount = (item instanceof BaseItemStack) ? ((BaseItemStack) item).getAmount() : 1;
assert (amount == 1);
boolean usesDamageValue = ItemType.usesDamageValue(id);
if (id == BlockID.AIR) {
throw new IllegalArgumentException("Can't fetch air block");
}
loadInventory();
boolean found = false;
for (int slot = 0; slot < items.length; ++slot) {
ItemStack bukkitItem = items[slot];
if (bukkitItem == null) {
continue;
}
if (bukkitItem.getTypeId() != id) {
// Type id doesn't fit
continue;
}
if (usesDamageValue && bukkitItem.getDurability() != damage) {
// Damage value doesn't fit.
continue;
}
int currentAmount = bukkitItem.getAmount();
if (currentAmount < 0) {
// Unlimited
return;
}
if (currentAmount > 1) {
bukkitItem.setAmount(currentAmount - 1);
found = true;
} else {
items[slot] = null;
found = true;
}
break;
}
if (!found) {
throw new OutOfBlocksException();
}
}
/**
* Store a block.
*
* @param id
*/
@Override
public void storeItem(BaseItem item) throws BlockBagException {
final int id = item.getType();
final int damage = item.getDamage();
int amount = (item instanceof BaseItemStack) ? ((BaseItemStack) item).getAmount() : 1;
assert (amount <= 64);
boolean usesDamageValue = ItemType.usesDamageValue(id);
if (id == BlockID.AIR) {
throw new IllegalArgumentException("Can't store air block");
}
loadInventory();
int freeSlot = -1;
for (int slot = 0; slot < items.length; ++slot) {
ItemStack bukkitItem = items[slot];
if (bukkitItem == null) {
// Delay using up a free slot until we know there are no stacks
// of this item to merge into
if (freeSlot == -1) {
freeSlot = slot;
}
continue;
}
if (bukkitItem.getTypeId() != id) {
// Type id doesn't fit
continue;
}
if (usesDamageValue && bukkitItem.getDurability() != damage) {
// Damage value doesn't fit.
continue;
}
int currentAmount = bukkitItem.getAmount();
if (currentAmount < 0) {
// Unlimited
return;
}
if (currentAmount >= 64) {
// Full stack
continue;
}
int spaceLeft = 64 - currentAmount;
if (spaceLeft >= amount) {
bukkitItem.setAmount(currentAmount + amount);
return;
}
bukkitItem.setAmount(64);
amount -= spaceLeft;
}
if (freeSlot > -1) {
items[freeSlot] = new ItemStack(id, amount);
return;
}
throw new OutOfSpaceException(id);
}