Feather data

Every feather is an entry in the arrowplus/feathers datapack registry. Add your own and players can use it with any head and stick.

data/<namespace>/arrowplus/feathers/<name>.json

For example, data/mymod/arrowplus/feathers/spectral.json adds the feather mymod:spectral.

A feather is either standalone, where the material item itself goes in the arrow recipe (like phantom membrane), or crafted into an arrowplus:custom_feather first (like the Kelp Feather).

Fields

Field	Type	Required	Description
material	item id, #tag or list of item ids	✅	Standalone: the items used as the feather. Crafted: what the feather is crafted from.
color	int	✅	Tint of the feather on the arrow (and of the custom feather item), as a signed decimal ARGB int. The arrow designer converts colors.
translationKey	string	✅	Lang key for the feather's name. Standalone feathers can use the item's own key, e.g. item.minecraft.paper.
gravityMultiplier	number		Multiplies shaft gravity. Defaults to 1.0; allowed range 0–4. Phantom membrane uses 0.6.
airDrag	number		Fraction of speed kept each tick in air. Defaults to 0.99, the vanilla arrow. Higher flies further.
waterDrag	number		Fraction of speed kept each tick in water. Defaults to 0.6, the vanilla arrow.
accuracy	number		Spread multiplier. Defaults to 1.0. Lower is more accurate: 0.5 halves the spread.
standalone	boolean		true to use the material item directly. Defaults to false.
outputAmount	int		Crafted feathers per craft. Defaults to 4. Not used by standalone feathers.

The tooltip shows drag as speed lost per tick, so airDrag: 0.99 is shown as 1%.

All physics values must be finite. Air and water drag must be between 0 and 1, accuracy between 0 and 10, and output amount between 1 and 64. Invalid values fail datapack loading with a field error.

Crafting

Crafted feathers: four of the material around a vanilla feather make outputAmount feathers.

Crafting ➜ KF4Kelp Feather

Standalone feathers have no recipe of their own.

Examples

Crafted feather

{
  "material": "minecraft:glow_ink_sac",
  "color": -16711681,
  "translationKey": "item.mymod.spectral_feather",
  "airDrag": 0.992,
  "accuracy": 0.7,
  "outputAmount": 4
}

// assets/mymod/lang/en_us.json
{
  "item.mymod.spectral_feather": "Spectral Feather"
}

Standalone feather

The built-in phantom membrane feather:

{
  "material": "minecraft:phantom_membrane",
  "color": -3555104,
  "translationKey": "item.minecraft.phantom_membrane",
  "airDrag": 0.995,
  "accuracy": 0.8,
  "gravityMultiplier": 0.6,
  "standalone": true
}

Material conflicts

An item should only be the material of one standalone feather. If two match, the first one wins.

Built-in entries

Feather	From	Drop modifier	Air loss / tick	Water loss / tick	Spread	Id
Any feather	Used directly	×1	1%	40%	×1	arrowplus:feather
Paper	Used directly	×1	2%	50%	×1.3	arrowplus:paper
Phantom Membrane	Used directly	×0.6	0.5%	40%	×0.8	arrowplus:phantom_membrane
GFGilded Feather	×4	×1	1%	40%	×0.8	arrowplus:gilded
KFKelp Feather	×4	×1	1.5%	5%	×1.1	arrowplus:kelp
PFPrismarine Feather	×4	×1	1%	15%	×0.9	arrowplus:prismarine