Drygmies and You!

By Orcao

Note

^C is being used to denote a configurable value. The numbers provided are the default values
“Henge” is referring to the Drygmy’s Henge, and the area it encompasses (10 blocks in any direction for jars; 10 blocks in any horizontal direction and 6 blocks above/below for actual entities)
While “Entity” is generally a broader term than is being used here, I am using it to refer to any Living Entity not on the Drygmy blacklist that also isn’t a Drygmy or a Player

Drop Count

Your first entity in a single entity henge will provide 4 drops
(1 base + 1 per entity < 5 + 2 per unique entity)

Loot Table

Potentially generated items are pooled into one massive list based on the entities in your henge
Entities with no loot table do not negatively impact the henge’s loot table
Entities with <100% chance to drop items from their loot table can generate “no loot” pulls into the Loot Table, determined each time the Drygmies finish a cycle
Specially spawned drops (like Nether Stars) are not added to the loot table
Putting multiple of one entity can help bias loot generation towards that drop table if you have a large amount of item yielding entities in your henge

Item Generation

The sum of all vanilla experience values of all entities in the henge is taken and multiplied by 0.25 then rounded down (25 entities * 0.25 = 6.25 = 6)
If that reduced sum is not greater than 3, then the henge will skip exp generation
For every 12 exp in that reduced value, a henge will generate 1 Greater Experience Gem
For every 3 exp in that reduced sum, after subtracting 12 for every generated Greater Experience Gem, a henge will generate 1 Experience Gem
If there is a positive leftover value, the henge will generate an additional Experience Gem
There are neither penalties for duplicate entities nor bonuses for uniqueness when it comes to exp
Specially spawned experience (like from the Dragon) is not factored into the experience value
These in no way take away, or add to, the loot pool of the henge for the purpose of generating items
The base experience of all entities in a henge must exceed 16 (before the 0.25 multiplication) before you see any experience gems

A Henge will check to see if its progress maxed out every 100 ticks, any progress generated beyond 20^C in this time is wasted
A Drygmy will provide progress to a Henge once it finishes “Channeling” (dancing) next to an entity
If a Drygmy recognizes that it has no path to its chosen jar, it will skip the movement part and start dancing immediately
Drygmy pathfinding is quite fragile, and they’re not particularly good at realizing that they can’t reach their destination if non-solid blocks (like containment jars) or other entities (like Drygmies) are in the way
Drygmies are very good at recognizing when their path is blocked by solid blocks
A Drygmy takes 100 ticks to dance, then waits 100 ticks before it can dance again
A Henge needs 20^C “progress” to generate items
A Henge consumes 10%^C of a source jar every time it generates items
You need 20^C Drygmies to max out a henge’s production speed. You can use more henges if you need higher production
Entity collisions cause exponential lag. If you plan on putting multiple Drygmies in a hole, disable their collisions by putting them inside vines, ladders, or scaffolding
To further optimize for lag, make sure your Drygmies have no path to their containment jars
You can use a Dominion Wand on a Henge while crouching to make it only look for mobs in Containment Jars. This is better for lag and prevents random mobs from polluting your output

These can be used to generate 2 additional drops from your Henge’s loot table, without diluting the pool
Axolotl, Wandering Trader, Villagers, The Wither, The Ender Dragon, The Wilden Chimera, Bees, Allays, Bats, and probably many more
Added in 1.21, the /ars-dropless command can be used to show a list of dropless entities. If you have operator permissions, /ars-dropless simulate 10000 should give more accurate results
Some mods modify the drop tables of vanilla entities