Bell

"Ding dong, who's there? A RAID? GET INSIDE!!!"

- Adrian Östergård

Bells are transparent animated block entities that produce a sound when.

Obtaining
A bell requires a pickaxe to be mined or it will drop nothing.

Bells cannot be crafted, only found or traded.

Natural generation
Bells can generate naturally in all village variants, usually near the center of the village in the meeting point.

Trading
$$, apprentice-level armorer villagers have $1/3$ chance to sell a bell for 36 emeralds. Apprentice-level toolsmith villagers sell bells for 36 emeralds. Journeyman-level weaponsmith villagers sell bells for 36 emeralds.

$$, apprentice-level armorer villagers have a 50% chance to sell a bell for 36 emeralds. Apprentice-level toolsmith and weaponsmith villagers will always sell a bell for 36 emeralds.

Usage
When the side of a bell is, it will produce a sound as well as a "swaying" animation. $$, bells can also be rung by any damage-dealing projectile. $$, they can be rung using a redstone signal. $$, they can be rung by any projectile by right clicking. Bells can be anchored to the side of blocks, ceilings, and floors. Also, if the player the bell while villagers are sleeping, all of the villagers will wake up. Bells can only be rung from certain angles; trying from an incorrect angle will not cause the bell to ring, but the hand will still reach out anyway.

When rung, villagers will run into their houses immediately as they do at sunset. The bell's functional range for sending villagers to their home is 31x31 squared, with the bell counting as 1. This gives the bell an effective area of 961 blocks per plane and totals the bells effective area to 29792 blocks affected in the whole square.

Important fact: the bell can be used in systems such as iron farms, it can be used to differentiate one village from another even when they are nearby, this allows the generation of more than one iron golem in the same area because with several bells You can make multiple villages in one place.

Additionally $$, if a bell is rung and there is a raid mob within 32 blocks, the Glowing effect will be applied to all raid mobs within 48 blocks. It will produce a resonating sound once this process is complete.

Block entity
A bell has a block entity associated with it that holds additional data about the block.

Trivia

 * $$, bells used to have unused data values with only side texture without bell which cannot be rung.
 * $$, bells will deflect any projectile that does not disappear when hitting a surface (arrows or tridents).
 * Despite some villages generating with more than one bell, villagers only need one of them to meet and spawn iron golems.