Difference between revisions of "Light amplification visor"

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[[Image:LightAmpVisorE1M5.png|thumb|The light amplification visor can be found in a secret area in [[E1M5: Phobos Lab (Doom)|E1M5: Phobos Lab]].]]
 
[[Image:LightAmpVisorE1M5.png|thumb|The light amplification visor can be found in a secret area in [[E1M5: Phobos Lab (Doom)|E1M5: Phobos Lab]].]]
  
The '''light amplification visor''' is a [[powerup]] that appears as a pair of gray goggles with blinking red lenses.  Picking one up will show everything at full brightness for 120 seconds.  When 5 seconds remain, the display will begin blinking back to its original light level, signaling the end of the visor's effects.
+
The '''light amplification visor''' is a [[powerup]] that appears as a pair of gray goggles with blinking red lenses.  Picking one up will show everything at full brightness for 120 seconds.  When 5 seconds remain, the display will begin blinking back to its original light level, signaling the end of the visor's effects. The same effect can also be achieved with the [[Doom cheat codes|cheat code]] {{c|idbeholdl}}. Picking up a visor while a previously collected one is still active resets the duration to 120 seconds.
  
Light amplification can also be activated with the [[Doom cheat codes|cheat code]] <tt>idbeholdl</tt>.
+
Light amplification visors are the rarest of Doom's powerups, as they undo the various lighting effects that are an [[Doom#History and development|integral part]] of the game's atmosphere. In [[Doom II]], though, three can be found in a single level: the [[MAP10: Refueling Base (Doom II)|Refueling Base]], while in [[Doom 64]] the visor appears just once in the entire game, in the second level, [[MAP02: The Terraformer (Doom 64)|The Terraformer]].
  
Light amplification visors are the rarest of [[Doom]]'s powerups, as they undo the various lighting effects that are an integral part of the game's atmosphere (although, in [[Doom II]], three can be found in a single level: the [[MAP10: Refueling Base (Doom II)|Refueling Base]]).
+
They are included in the [[Intermission screen|items percentage]] displayed at the end of each level.
  
Light amplification visors are included in the [[Intermission screen|items percentage]] displayed at the end of each level.
+
== Data ==
 
 
Many players have lamented the replacement of the light amplification visor in [[Doom 3]] with the [[flashlight]], as the player cannot use the flashlight and another weapon at the same time.
 
  
 
{| {{prettytable}}
 
{| {{prettytable}}
 
!colspan="2"|Light amplification visor data
 
!colspan="2"|Light amplification visor data
 
|-
 
|-
| Thing type||2045 (decimal), 7FD (hex)
+
| [[Thing types|Thing type]]||2045 (decimal), 7FD (hex)
 
|-
 
|-
| Appears in||Shareware Doom<br>Registered Doom<br>Ultimate Doom<br>Doom II/Final Doom
+
| [[Mobj|Enum]]||MT_MISC16 (61)
 +
|-
 +
| Appears in||[[Shareware]] Doom<br/>Registered Doom<br/>The Ultimate Doom<br/>Doom II/Final Doom
 
|-
 
|-
 
| Radius||20
 
| Radius||20
 +
|-
 +
| Height||16
 
|-
 
|-
 
| [[Sprite]]||PVIS
 
| [[Sprite]]||PVIS
 
|-
 
|-
| [[Thing types|Class]]|||Artifact<br>Pickup
+
| Frames||2 (AB)
 
|-
 
|-
 +
| [[Thing types|Class]]|||[[Item]]<br/>Pickup
 
|}
 
|}
  
 
== Appearance statistics ==
 
== Appearance statistics ==
  
The [[IWAD]]s contain the following numbers of light amplification visors:
+
In the [[IWAD]]s the light amplification visor is first encountered on these maps per [[Skill level#Doom and Doom II skill levels|skill level]]:
 +
 
 +
{{col-begin}}
 +
{{col-break|width=50%}}
 
{| {{prettytable}}
 
{| {{prettytable}}
!Game||[[I'm Too Young To Die|ITYTD]] and [[Hey, Not Too Rough|HNTR]]||[[Hurt Me Plenty|HMP]]||[[Ultra-Violence|UV]] and [[Nightmare!|NM]]
+
!colspan="4"|Single-player
 +
|-
 +
!Game / ''Episode''!!1-2!!3!!4-5
 +
|-
 +
|''[[Knee-Deep in the Dead]]''||[[E1M5: Phobos Lab]]||E1M5: Phobos Lab||E1M5: Phobos Lab
 +
|-
 +
|''[[The Shores of Hell]]''||[[E2M5: Command Center]]||[[E2M6: Halls of the Damned]]||E2M6: Halls of the Damned
 
|-
 
|-
|[[Ultimate Doom]]||9||8||8
+
|''[[Inferno]]''||[[E3M5: Unholy Cathedral]]||E3M5: Unholy Cathedral||E3M5: Unholy Cathedral
 
|-
 
|-
|[[Doom II]]||5||5||5
+
|''[[Thy Flesh Consumed]]''||[[E4M8: Unto the Cruel]]||E4M8: Unto the Cruel||E4M8: Unto the Cruel
 
|-
 
|-
|[[TNT: Evilution]]||5||5||4
+
|[[Doom II]]||[[MAP10: Refueling Base]]||MAP10: Refueling Base||MAP10: Refueling Base
 
|-
 
|-
|[[The Plutonia Experiment|Plutonia]]||0||0||0
+
|[[TNT: Evilution]]||[[MAP07: Prison]]||MAP07: Prison||[[MAP11: Storage Facility]]
 
|-
 
|-
 +
|[[Plutonia Experiment]]||-||-||-
 
|}
 
|}
 +
{{col-break}}
 +
{| {{prettytable}}
 +
!colspan="4"|Multiplayer
 +
|-
 +
!Game / ''Episode''!!1-2!!3!!4-5
 +
|-
 +
|''Knee-Deep in the Dead''||E1M5: Phobos Lab||E1M5: Phobos Lab||E1M5: Phobos Lab
 +
|-
 +
|''The Shores of Hell''||E2M5: Command Center||E2M6: Halls of the Damned||E2M6: Halls of the Damned
 +
|-
 +
|''Inferno''||E3M5: Unholy Cathedral||E3M5: Unholy Cathedral||E3M5: Unholy Cathedral
 +
|-
 +
|''Thy Flesh Consumed''||E4M8: Unto the Cruel||E4M8: Unto the Cruel||E4M8: Unto the Cruel
 +
|-
 +
|Doom II||[[MAP05: The Waste Tunnels]]||MAP05: The Waste Tunnels||MAP05: The Waste Tunnels
 +
|-
 +
|TNT: Evilution||MAP07: Prison||MAP07: Prison||MAP11: Storage Facility
 +
|-
 +
|Plutonia Experiment||-||-||-
 +
|}
 +
{{col-end}}
 +
 +
The IWADs contain the following numbers of light amplification visors per skill level:
 +
 +
{{col-begin}}
 +
{{col-break|width=50%}}
 +
{| {{prettytable|style=text-align: center;}}
 +
!colspan="4"|Single-player
 +
|-
 +
!Game / ''Episode''!!1-2!!3!!4-5
 +
|-
 +
|style="text-align: left;"|''[[Knee-Deep in the Dead]]''||''2''||''2''||''2''
 +
|-
 +
|style="text-align: left;"|''[[The Shores of Hell]]''||''5''||''4''||''4''
 +
|-
 +
|style="text-align: left;"|''[[Inferno]]''||''1''||''1''||''1''
 +
|-
 +
|style="text-align: left;"|[[Doom|Doom (registered)]]||8||7||7
 +
|-
 +
|style="text-align: left;"|''[[Thy Flesh Consumed]]''||''1''||''1''||''1''
 +
|-
 +
|style="text-align: left;"|[[Ultimate Doom]]||9||8||8
 +
|-
 +
|style="text-align: left;"|[[Doom II]]||5||5||5
 +
|-
 +
|style="text-align: left;"|[[TNT: Evilution]]||5||5||4
 +
|-
 +
|style="text-align: left;"|[[Plutonia Experiment]]||0||0||0
 +
|}
 +
{{col-break}}
 +
{| {{prettytable|style=text-align: center;}}
 +
!colspan="4"|Multiplayer
 +
|-
 +
!Game / ''Episode''!!1-2!!3!!4-5
 +
|-
 +
|style="text-align: left;"|''Knee-Deep in the Dead''||''2''||''2''||''2''
 +
|-
 +
|style="text-align: left;"|''The Shores of Hell''||''5''||''4''||''4''
 +
|-
 +
|style="text-align: left;"|''Inferno''||''1''||''1''||''1''
 +
|-
 +
|style="text-align: left;"|Doom (registered)||8||7||7
 +
|-
 +
|style="text-align: left;"|''Thy Flesh Consumed''||''1''||''1''||''1''
 +
|-
 +
|style="text-align: left;"|Ultimate Doom||9||8||8
 +
|-
 +
|style="text-align: left;"|Doom II||7||7||7
 +
|-
 +
|style="text-align: left;"|TNT: Evilution||8||8||7
 +
|-
 +
|style="text-align: left;"|Plutonia Experiment||0||0||0
 +
|}
 +
{{col-end}}
 +
 +
== Notes ==
 +
 +
[[File:Mbf_nightvision.png|thumb|The night vision colormap, as seen in [[E1M5: Phobos Lab (Doom)|E1M5]] via [[MBF]]'s beta emulation mode.]]
 +
Light amplification visors originally used [[COLORMAP|colormap 33]] in the [[press release beta]] to simulate {{wp|Night vision device|night vision goggles}}. However, this tended to make the game darker and sprites more difficult to discern due to the limited number of shades available in the palette, which probably explains why it was changed.
 +
 +
In [[Doom 64]], instead of blinking the added light effect simply fades into the current lighting (or lack thereof) when the powerup runs out.
 +
 +
Many players have lamented the replacement of the light amplification visor in [[Doom 3]] with the [[flashlight]], as the player cannot use the flashlight and another [[Weapon#Doom 3|weapon]] at the same time. [[id Software]] themselves addressed this in [[Doom 3: BFG Edition]] by changing the flashlight into an armor-mounted device.
  
 
== See also ==
 
== See also ==
 +
* [[Torch]], an [[artifact]] in [[Heretic]] and [[Hexen]] with a similar effect.
  
 
{{Doom items}}
 
{{Doom items}}

Revision as of 10:48, 3 July 2017

The light amplification visor can be found in a secret area in E1M5: Phobos Lab.

The light amplification visor is a powerup that appears as a pair of gray goggles with blinking red lenses. Picking one up will show everything at full brightness for 120 seconds. When 5 seconds remain, the display will begin blinking back to its original light level, signaling the end of the visor's effects. The same effect can also be achieved with the cheat code idbeholdl. Picking up a visor while a previously collected one is still active resets the duration to 120 seconds.

Light amplification visors are the rarest of Doom's powerups, as they undo the various lighting effects that are an integral part of the game's atmosphere. In Doom II, though, three can be found in a single level: the Refueling Base, while in Doom 64 the visor appears just once in the entire game, in the second level, The Terraformer.

They are included in the items percentage displayed at the end of each level.

Data

Light amplification visor data
Thing type 2045 (decimal), 7FD (hex)
Enum MT_MISC16 (61)
Appears in Shareware Doom
Registered Doom
The Ultimate Doom
Doom II/Final Doom
Radius 20
Height 16
Sprite PVIS
Frames 2 (AB)
Class Item
Pickup

Appearance statistics

In the IWADs the light amplification visor is first encountered on these maps per skill level:

The IWADs contain the following numbers of light amplification visors per skill level:

Notes

The night vision colormap, as seen in E1M5 via MBF's beta emulation mode.

Light amplification visors originally used colormap 33 in the press release beta to simulate night vision goggles. However, this tended to make the game darker and sprites more difficult to discern due to the limited number of shades available in the palette, which probably explains why it was changed.

In Doom 64, instead of blinking the added light effect simply fades into the current lighting (or lack thereof) when the powerup runs out.

Many players have lamented the replacement of the light amplification visor in Doom 3 with the flashlight, as the player cannot use the flashlight and another weapon at the same time. id Software themselves addressed this in Doom 3: BFG Edition by changing the flashlight into an armor-mounted device.

See also