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Redstone>Goro488: /* Gallery */

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{{redirect|Lamp|the other light source|Lantern}}
{{Block
|image=Redstone Lamp.png
|image2=Lit Redstone Lamp.png
|transparent=Partial <small>(when lit)</small>
|light=Yes (15) <small>(when lit)</small>
|tool=any
|renewable=Yes
|stackable=Yes (64)
|flammable=No
|lavasusceptible=No
}}
A '''redstone lamp''' is a [[block]] that produces [[light]] when activated with a redstone signal.

== Obtaining ==

=== Breaking ===

A redstone lamp can be mined by hand or with any tool, dropping itself as an item.
{{breaking row|horizontal=1|Redstone Lamp}}

=== Crafting ===

{{Crafting
|B1= Redstone Dust
|A2= Redstone Dust
|B2= Glowstone
|C2= Redstone Dust
|B3= Redstone Dust
|Output= Redstone Lamp
|type= Redstone
}}

== Usage ==

A redstone lamp can be used to produce switchable [[light]].

Redstone lamps are [[Redstone components#Mechanism components|redstone mechanisms]] and can be activated by:
* An adjacent active '''[[power component]]''', including above or below: for example, a [[redstone torch]] (except that a redstone torch does not activate a redstone lamp it is attached to), a [[block of redstone]], a [[daylight sensor]], etc.
* An adjacent '''powered block''' (for example, an opaque block with an active redstone torch under it), including above or below
* A powered '''[[redstone comparator]]''' or '''[[redstone repeater]]''' facing the redstone lamp
* Adjacent powered '''[[#redstone dust|redstone dust]]''' configured to point at the redstone lamp (or on top of it) or directionless; a redstone lamp is ''not'' activated by adjacent powered redstone dust that is configured to point away from it.

A redstone lamp activates instantly, but takes 2 redstone ticks to turn off (4 game ticks, or 0.2 seconds barring lag).

An active redstone lamp produces block light 15. An inactive redstone lamp produces no light.

A redstone lamp acts like an opaque block; torches and levers can be attached to it, it blocks sky light, mobs suffocate in it, and it conducts redstone power.

== Sounds ==
{{Sound table/Block/Glass}}

== Data values ==

=== ID ===
{{edition|java}}:
{{ID table
|showforms=y
|generatetranslationkeys=java
|displayname=Redstone Lamp
|spritetype=block
|nameid=redstone_lamp
|foot=1}}

{{edition|bedrock}}:
{{ID table
|shownumericids=y
|showforms=y
|generatetranslationkeys=bedrock
|displayname=Redstone Lamp
|spritetype=block
|nameid=redstone_lamp
|id=123}}
{{ID table
|displayname=Lit Redstone Lamp
|spritetype=block
|nameid=lit_redstone_lamp
|id=124
|form=block
|foot=1}}

=== Block states ===
{{see also|Block states}}
{{/BS}}

== Video ==

<div style="text-align:center">{{yt|pjO4dp7j5ks}}</div>

== History ==
{{History||November 11, 2010|link={{tweet|notch|2649488615276544}}|[[Notch]] claimed that "lamps" had actually stood for "'''L'''ight '''A'''-givin' '''M'''aterial '''P'''ortal '''S'''ide... the yellow stone thing".}}
{{History|java}}
{{History||1.2.1|snap=12w07a|[[File:Redstone Lamp JE1.png|32px]] [[File:Lit Redstone Lamp JE1.png|32px]] Added redstone lamps.}}
{{History|||snap=1.2|[[File:Redstone Lamp JE2 BE1.png|32px]] [[File:Lit Redstone Lamp JE2 BE1.png|32px]] The texture of redstone lamps has now been darkened, and the texture of lit redstone lamps has been slightly changed.}}
{{History||1.2.4|snap=release|A 2-[[tick]] delay to deactivation has been added to redstone lamps.}}
{{History||?|Levers can be placed on redstone lamps.}}
{{History||January 11, 2018|link={{tweet|JasperBoerstra|951440267038593024}}|[[File:Redstone Lamp JE3 BE2.png|32px]] [[File:Lit Redstone Lamp JE3 BE2.png|32px]] [[Jasper Boerstra]] tweets an image of updated redstone lamp textures.}}
{{History||1.13|snap=17w47a|The different block IDs for the redstone lamp has now been merged into one ID.
|A lit block state has been added to redstone lamps.
|Prior to [[1.13/Flattening|''The Flattening'']], these [[block]]s' numeral IDs were 123 and 124.}}
{{History||1.14|snap=18w43a|[[File:Redstone Lamp JE3 BE2.png|32px]] [[File:Lit Redstone Lamp JE3 BE2.png|32px]] The texture of redstone lamps has now been changed.}}

{{History|pocket alpha}}
{{History||v0.13.0|snap=build 1|[[File:Redstone Lamp JE2 BE1.png|32px]] [[File:Lit Redstone Lamp JE2 BE1.png|32px]] Added redstone lamps.}}
{{History|bedrock}}
{{History||?|Levers can be placed on redstone lamps.}}
{{History||1.10.0|snap=beta 1.10.0.3|[[File:Redstone Lamp JE3 BE2.png|32px]] [[File:Lit Redstone Lamp JE3 BE2.png|32px]] The texture of redstone lamps has now been changed.}}

{{History|console}}
{{History||xbox=TU12|xbone=CU1|ps=1.0|wiiu=Patch 1|switch=1.0.1|[[File:Redstone Lamp JE2 BE1.png|32px]] [[File:Lit Redstone Lamp JE2 BE1.png|32px]] Added redstone lamps.}}
{{History|Ps4}}
{{History||1.90|[[File:Redstone Lamp JE3 BE2.png|32px]] [[File:Lit Redstone Lamp JE3 BE2.png|32px]] The texture of redstone lamps has now been changed.}}

{{History|new 3ds}}
{{History||0.1.0|[[File:Redstone Lamp JE2 BE1.png|32px]] [[File:Lit Redstone Lamp JE2 BE1.png|32px]] Added redstone lamps.}}
{{History|foot}}

=== Lit redstone lamp "item" ===
{{main|Direct item forms of blocks}}
{{History|java}}
{{History||1.2.1|snap=12w07a|[[File:Lit Redstone Lamp (inventory) JE1.png|32px]] Lit redstone lamps have an item form corresponding to its block ID, which uses the cube model with the lit texture. It can be obtained via inventory editors with numeric item ID 124.
|Interestingly, unlike most items of this type, lit redstone lamps are themselves dropped by lit redstone lamps.
|The item is generically called "Redstone Lamp".
|Pick Block on a lit redstone lamp block would highlight any existing lit redstone lamp blocks in the hotbar, rather than normal redstone lamps.}}
{{History|||snap=1.2|[[File:Lit Redstone Lamp (inventory) JE2.png|32px]] The lit redstone lamp item has changed with the lit redstone lamp texture's change.}}
{{History||1.2.4|snap=release|Lit redstone lamps now drop normal redstone lamp items when broken in most cases. They can still be obtained by breaking one with a Silk Touch enchanted tool.}}
{{History||1.2.5|Pick Block on a lit redstone lamp will now always return a normal, unpowered redstone lamp.}}
{{History||1.3.1|snap=12w16a|Lit redstone lamp items can now be obtained in singleplayer worlds via the {{cmd|give}} command using the respective numeric ID.}}
{{History|||snap=12w22a|[[File:Lit Redstone Lamp (inventory) JE3.png|32px]] Block items have been flipped back to their pre-Beta 1.6 orientations.}}
{{History||1.4.2|snap=12w34a|[[File:Lit Redstone Lamp (inventory) JE4.png|32px]] Block items have been brightened to an almost unnoticable degree.}}
{{History||1.7.2|snap=13w37a|The direct item form of lit redstone lamps has been removed from the game. It can no longer exist as an item in any way, only as a placed block.
|The ability for lit redstone lamps to drop lit redstone lamp items via Silk Touch has ''not'' been removed, however. As a result, attempting to obtain a lit redstone lamp this way in this version crashes the game with a [[wikipedia:Null pointer#Null dereferencing|NullPointerException]].}}
{{History|||snap=13w38a|Lit redstone lamp blocks now drop unlit items regardless of tool.<ref>{{bug|MC-3973}}</ref>{{verify|ticket says 13w38c - was it just resolved late?}}}}
{{History|bedrock}}
{{History||?|Lit redstone lamps probably exist as an item.}}
{{History|foot}}

== Issues ==

{{issue list}}

== Trivia ==
* Multiple tiled redstone lamps produce a pattern that resembles the [[wikipedia:Truncated square tiling|truncated square tiling]] t{4,4}.
* Redstone lamps are transparent on [[map]]s.

== Gallery ==

<gallery>
File:Redstone Lamp Day (Switched Off).png|A redstone lamp shown during the day that is switched off.
File:Redstone Lamp Day (Switched On).png|A redstone lamp shown during the day that is switched on.
File:Redstone Lamp Evening (Switched Off).png|A redstone lamp shown during the evening that is switched off.
File:Redstone Lamp Evening (Switched On).png|A redstone lamp shown during the evening that is switched on.
</gallery>
<gallery>
File:Redstone-lamp-and-wire.png|Demonstrating how wire powers redstone lamps.
File:Redstone-lamp-and-repeaters.png|Demonstrating how repeaters power redstone lamps.
File:Redstone-lamp-powered-block.png|Demonstrating how a solid block powers redstone lamps.
</gallery>
Since lamps themselves are solid blocks, they power other lamps. This causes the cross-shaped patterns of lit lamps.
<gallery>
File:Redstone-lamp-torch-floor-no-block-above.png|Floor torch with no lamp above it.
File:Redstone-lamp-torch-floor-with-block-above.png|Floor torch with a lamp above it.
File:Redstone-lamp-torch-wall-no-block-above.png|Wall torch with no lamp above it.
File:Redstone-lamp-torch-wall-with-block-above.png|Wall torch with a lamp above it.
File:Creativity of redstone lamps.png|How you may use the flashing redstone lamps mechanism.
</gallery>
A glowing roof can be done by laying wire across the blocks, or lining the top of the lamps with redstone blocks. Floors and walls are also do-able. A glowing floor can be created by using "[[wikipedia:Chess#Movement|knight's move]]" shape underneath the floor with torches. A glowing wall uses wall-mounted torches that power blocks above them.
<gallery>
File:Redstone-lamp-floor.png|A redstone lamp floor.
File:Redstone-lamp-wall.png|A redstone lamp wall.
</gallery>

== References ==

{{Reflist}}

{{Redstone}}
{{Blocks}}

[[Category:Redstone mechanics]]
[[Category:Mechanics]]
[[Category:Redstone]]
[[Category:Mechanisms]]
[[Category:Manufactured blocks]]

[[de:Redstone-Lampe]]
[[es:Lámpara de redstone]]
[[fr:Lampe à redstone]]
[[hu:Redstone-lámpa]]
[[it:Lampada a redstone]]
[[ja:レッドストーンランプ]]
[[ko:레드스톤 조명]]
[[nl:Redstonelamp]]
[[pl:Lampa]]
[[pt:Lâmpada de redstone]]
[[ru:Лампа]]
[[zh:红石灯]]

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Redstone>Goro488: /* Gallery */