Tripwire Hook

Tripwire Hook

Renewable	Yes
Stackable	Yes (64)
Tool	Any tool
Blast resistance	0
Hardness	0
Luminant	No
Transparent	Yes
Flammable	No
Catches fire from lava	No

A tripwire hook is a block that can be used to detect entities (players, mobs, items, etc.) when part of a tripwire circuit is passed through.

Obtaining

Breaking

Tripwire hooks can be broken instantly using any tool, or without a tool.

A tripwire hook is also removed and drops itself as an item if:

• its attachment block is moved, removed, or destroyed
• water flows into its space in Java Edition
• a piston tries to push it or moves a block into its space

A tripwire hook is destroyed without dropping itself as an item if lava flows into its space.

Natural generation

Four tripwire hooks are generated naturally in each jungle temple.

From chest loot

Item	Structure	Container	Quantity	Chance
Java Edition
Tripwire Hook	Pillager Outpost	Chest	1–3	30.5%
Bedrock Edition
Tripwire Hook	Pillager Outpost	Chest	1–3	30.5%

Crafting

Ingredients	Crafting recipe
Iron Ingot + Stick + Any Planks	2

Fishing

Tripwire hooks can be obtained as a "junk" item from fishing.

Usage

Tripwire hooks can be used as crafting ingredients or as redstone components.

Crafting ingredient

Tripwire hooks can be used to craft trapped chests and crossbows.

Redstone component

See also: Redstone circuit

A tripwire hook can be used to detect mobs, items, and other entities over a large area.

Placement

To place a tripwire hook, use the Place Block control.

In order to function correctly, a tripwire hook must be part of a "tripwire circuit": a straight line of blocks consisting of a block with a tripwire hook attached to it, a "tripwire line" (1 to 40 blocks of tripwire), and a second tripwire hook attached to another block, with both tripwire hooks facing the tripwire.

To place tripwire, use the Place Block control with a string. Tripwire in a valid tripwire circuit has a short hitbox (0.09375 or 3/32 blocks high, with the bottom 0.0625 or 1/16 blocks above the block below), while tripwire not in a valid tripwire circuit has a taller hitbox (0.5 blocks high, bottom not raised).

The three states of a tripwire hook: not attached (folded), attached (straight), activated (depressed).

A tripwire hook in an invalid tripwire circuit appears "folded", while a tripwire hook in a valid tripwire circuit appears extended straight. Tripwire lines from separate tripwire circuits can be placed next to each other (in parallel), above each other, and even intersecting each other.

Activation

A tripwire hook in a valid tripwire circuit activates when certain entities (players, mobs, items, etc.) intersect the tripwire hook's tripwire line "hitbox" (but not the tripwire hook itself), and deactivates when all entities leave or are removed from the tripwire line.

Entities that cannot activate a tripwire circuit include thrown potions, some arrows, fireworks, thrown ender pearls, and thrown eyes of ender.

A tripwire hook also activates for 5 redstone ticks (0.5 seconds, barring lag) when any of its tripwires are destroyed, except when shears are used to destroy the tripwire.

Breaking the tripwire hook, or breaking the block it is attached to, does not generate a pulse.

Behavior

The tripwire hooks and the blocks they are attached to provide power, but the tripwire does not.

While active, a tripwire hook appears to move downward and it:

• powers any adjacent redstone dust to power level 15, including beneath the tripwire hook
• powers any adjacent redstone comparators or redstone repeaters facing away from the tripwire hook to power level 15
• strongly powers its attachment block to power level 15
• activates any adjacent mechanism components, including above or below, such as pistons, redstone lamps, etc.

Tripwire produces no power itself, but its state change can be detected with an observer.

Although destroying tripwire with shears cannot activate a tripwire hook, it changes the tripwire hook's block state (its "attached" state from true to false), which can be detected with an observer.

Trading

Master-level fletcher villager have a ²⁄₃ chance to buy 8 tripwire hooks for an emerald as part of their trades in Java Edition, and always offer the trade in Bedrock Edition.

Sounds

Java Edition:

Sound	Subtitle	Source	Description	Namespaced ID	Translation key	Volume	Pitch	Attenuation distance
	Block broken	Blocks	Breaking the block	block.stone.break	subtitles.block.generic.break	1.0	0.8	16
	None	Blocks	Falling on the block with fall damage	block.stone.fall	None	0.5	0.75	16
	Block breaking	Blocks	Mining the block	block.stone.hit	subtitles.block.generic.hit	0.25	0.5	16
	Block placed	Blocks	Placing the block	block.stone.place	subtitles.block.generic.place	1.0	0.8	16
	Footsteps	Blocks	Walking on the block	block.stone.step	subtitles.block.generic.footsteps	0.15	1.0	16
	Tripwire attaches	?	?	block.tripwire.attach	subtitles.block.tripwire.attach	?	(<1.0)	16
	Tripwire clicks	?	?	block.tripwire.click_off	subtitles.block.tripwire.click	?	(<1.0)	16
	Tripwire clicks	?	?	block.tripwire.click_on	subtitles.block.tripwire.click	?	(<1.0)	16
	Tripwire detaches	?	?	block.tripwire.detach	subtitles.block.tripwire.detach	?	?	16

Data values

ID

Java Edition:

Name	Namespaced ID	Translation key
Tripwire Hook	tripwire_hook	block.minecraft.tripwire_hook

Bedrock Edition:

Name	Namespaced ID	Numeric ID	Translation key
Tripwire Hook	tripwire_hook	131	tile.tripwire_hook.name

Block data

See also: Data values

In Bedrock Edition, a tripwire hook's block data stores its orientation, connection status, and activation status:

Bits	Values
0x1 0x2	A two-bit field storing a value from 0 to 3: 0: Tripwire hook on block side facing south 1: Tripwire hook on block side facing west 2: Tripwire hook on block side facing north 3: Tripwire hook on block side facing east
0x4	If set, the tripwire hook is connected and ready to trip ("middle" position).
0x8	If set, the tripwire hook is currently activated ("down" position)

Block states

See also: Block states

Java Edition:

Name	Default value	Allowed values	Description
attached	false	false true	True if the tripwire hook is connected to a valid tripwire circuit.
facing	north	east north south west	The direction in which the tripwire hook juts out from the block it is attached to. For example, a tripwire hook facing north is attached to a block to its south.
powered	false	false true	True if the tripwire hook is active.

Bedrock Edition:

Name	Default value	Allowed values	Description
attached_bit	0	0 1	True if the tripwire hook is connected to a valid tripwire circuit.
direction	0	0 1 2 3	The direction in which the tripwire hook juts out from the block it is attached to. For example, a tripwire hook facing north is attached to a block to its south.
powered_bit	0	0 1	True if the tripwire hook is active.

Video

Note: This video does not show the tripwire hook obtained from fishing, or its crafting usage.

History

Java Edition
1.3.1		May 28, 2012			Dinnerbone released a series of cryptic tweets, starting with "I think I'm taking a big liking toward adventure maps. It's starting to show in my choice of new blocks." He hinted at shears being used to disable the tripwire, then posted a series of images before revealing the name. Afterward, he posted a video to reveal the functionality of the tripwire and finally credited the idea to his fiancee MissMarzenia.
		12w22a			Added tripwire hooks.
1.5		13w01a			Tripwire hooks are now used to craft trapped chests.
1.7.2		13w36a			Tripwire hooks can now be obtained as one of the "junk" items by fishing.
1.8		14w11a			The model of tripwire hooks has been slightly changed.
		14w17a			The model of tripwire hooks has been changed. The stick is now affected by the Smooth Lighting option, the iron is bigger, and the top, side, and stick textures have been slightly changed.
1.9		15w49a			The suspended block state has been removed from tripwire hooks.
1.13		17w47a			Prior to The Flattening, this block's numeral ID was 131.
1.14		18w43a			The texture of tripwire hooks has been changed.
					Tripwire hooks are now used to craft crossbows.
		18w47a			As the planks textures has been changed, the texture of tripwire hooks has been changed, as a result.
1.16		20w10a			Tripwire hooks can now be placed on blocks of redstone, observers and targets.
Pocket Edition Alpha
0.13.0		build 1			Added tripwire hooks.
					Tripwire hooks are used to craft trapped chests.
Bedrock Edition
1.8.0		beta 1.8.0.10			Tripwire hooks are now used to craft crossbows.
1.10.0		beta 1.10.0.3			The texture of tripwire hooks has been changed.
					Tripwire hooks can now be found in pillager outpost chests.
1.11.0		beta 1.11.0.4			Tripwire hooks can now be sold to fletcher villagers.
Legacy Console Edition
TU14	CU1	1.04	Patch 1		Added tripwire hooks.
		1.90			The texture of tripwire hooks has been changed.
New Nintendo 3DS Edition
0.1.0					Added tripwire hooks.

Issues

Issues relating to "Tripwire" are maintained on the bug tracker. Report issues there.

Gallery

• 

  The first image of tripwires released by Mojang.

• 

  The second image of tripwires released by Mojang.

• 

  The third image of tripwires released by Mojang.

• 

  A comparison between a tripwire hook and a lever released by Mojang.

References

Redstone

View at: Template:Redstone/content [edit]

Blocks

View at: Template:Blocks/content [edit]