Anvil

An Anvil is a block that uses the new item repair interface to repair, rename, and combine enchantments on items.

Usage
The main purpose of anvils is repairing and renaming items. Unlike repairing items by combining them in a crafting area, anvils can both retain enchantments and expand on them. The player can also rename any item - not just tools or armor - using this method. This costs levels proportional to what is given. Simply renaming an item will cost 5 levels for a non-tool/armor item, whereas renaming and repairing an enchanted tool/armor is substantially more. As it is used, the anvil will become damaged. On its last use, taking the item will cause the GUI to close and anvil to disappear, dropping the item on the ground.

When an anvil lands on a non-solid block (like torches, rails, etc.), it will destroy that item instead of dropping itself as an item like sand, gravel, and dragon eggs do. When dropped on a pressure plate, a boat, cobwebs, a slab, a sign, a cake, a lily pad, closed trapdoor or opened fence gate, the anvil will drop as an item. When dropped on a flower pot, the flower pot is destroyed without a drop. When dropped on a head, the head is dropped as an item. It will also inflict damage when dropped on players or mobs. Damage amount depends on fall altitude.


 * The amount of damage dealt is calculated by this equation:

Anvil Damage = MAX(Fallen blocks - 2, 0) * 1.5

A player dying by an anvil falling on them will receive this message: "Player was squashed by a falling anvil." However if a player is touched by an anvil entity, or falling anvil, no damage will result until the anvil becomes a block in the gridspace where the player is. So anvils can be shot with a TNT Cannon, and pass right through a player, and not damage him/her. Anvils have the same blast resistance as obsidian making this anvil block blast proof. Despite this, they can still be mined quickly with a pickaxe. Although the player is provided with three types of anvils depending on damage, they all share the same block ID. This only pertains to damage values.

Bugs

 * Because anvils are not an eight-way symmetrical shape and Falling Sand retains a single orientation, no matter which direction an anvil was facing before it fell, it will default to a specific orientation while falling.


 * When digging with an anvil, the below of the top part is invisible. When its placed, however, it is not there. Item frames also have a similar bug; placing an anvil will make below of top part invisible, as well as bottom part.


 * If two similar repairable items are placed in the anvil it allows you to repair and rename the item, but when you remove the item on the right the item remaining on the left is still re-nameable, also if you were to replace the item on the left with any other item or block you can rename it, for example you could replace a the repairable item on the left with a gold block and rename it "diamond block".


 * If a damaged anvil falls, when it lands it will be repaired and set to a default orientation.

Trivia

 * It takes a total of 55 iron ingots to craft an anvil.
 * Similarly to obsidian, bedrock and End Portal Frames, anvils cannot be pushed or pulled by pistons.
 * Placing down a renamed placeable item will not retain the name if the item is picked back up again.
 * The anvil has the same blast resistance as obsidian and enchantment table.
 * Anvils being affected by physics may be a reference to classic cartoons, in which anvils were used in traps that usually backfired, causing the anvil to fall onto, and severely hurt, the antagonist.
 * If you wear a helmet, the Anvil can fall from any height and you will always deal health points of damage.