Arrows Go Through Glass (datapack)

Minecraft Java Edition 1.21.11 (data pack format 94).

Arrows flying fast enough shatter glass panes and keep flying, losing most of their speed. A full-power bow or crossbow shot breaks a pane over a long distance; a weak shot, a skeleton arrow or a dispenser arrow does not. At normal speeds an arrow can only break one pane, since it is too slow afterwards; an arrow given an extreme speed (for example with commands) can go through several.

Installation

Put the zip file in the datapacks folder of your world, then run /reload or reopen the world.

Enabling / disabling

The datapack follows the vanilla gamerule:

/gamerule minecraft:projectiles_can_break_blocks false

Configuration

Values are scoreboard scores and can be changed at any time:

Setting	Default	Meaning
#min_speed	250	Speed needed to break a block, in hundredths of a block per tick (250 = 2.5 blocks/tick). A full-power bow shot starts at 3.0, a crossbow at 3.15.
#kept_speed	40	Percentage of its speed the projectile keeps after breaking a block.

/scoreboard players set #min_speed agtg.config 200
/scoreboard players set #kept_speed agtg.config 40
/function arrows_go_through_glass:config/show
/function arrows_go_through_glass:config/reset

Breakable blocks and projectiles

• Breakable blocks: block tag arrows_go_through_glass:breakable (all glass panes, plus #c:glass_panes when a mod loader provides it).
• Projectiles: entity type tag arrows_go_through_glass:projectiles (#minecraft:arrows, i.e. arrows and spectral arrows). Tridents can be added (minecraft:trident); other projectiles such as snowballs are not supported by the datapack.
• Blocks the path scan sees through: block tag arrows_go_through_glass:passable (air, fluids, plants, torches, rails...).

To change them, override these tags from another datapack loaded above this one.

Broken blocks never drop anything.

Known limitations

• The datapack checks the blocks on the arrow's path cell by cell, not the pane's thin hitbox: an arrow passing very close to a pane, through the same block cell, can break it.
• A mob standing right in front of a pane does not protect it: the pane can break even if the arrow hits the mob.
• Partial blocks (slabs, fences, carpets...) on the path stop the scan, so a pane right behind them may not break.

Uninstalling

/function arrows_go_through_glass:uninstall
/datapack disable "file/arrows-go-through-glass-datapack-1.0.0.zip"