Sneak

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"''Quiet movement, and the ability to remain unnoticed. If successful, you will be much harder to locate. You cannot run and sneak at the same time, unless you take [[Silent Running]] perk.''"
 
"''Quiet movement, and the ability to remain unnoticed. If successful, you will be much harder to locate. You cannot run and sneak at the same time, unless you take [[Silent Running]] perk.''"
  
Sneak is subject to many modifiers, its mechanics differ from those of Fallout1/2.
+
'''Sneak''' allows a player to become totally invisible, unless he performs an attack. If he has the [[Silent Running]] perk, he can even run while being sneaked, which allows him to infiltrate enemy lines, for example. However, players can see you if you get too close to him, depending on many things (See the ''Modifiers'' section for more informations).
  
* FOV: When your character is out of the opponents [[FOV|Field Of View]], the sneak is automatically sucesfull.
+
 
 +
== Modifiers ==
 +
Sneak is subject to many modifiers, its mechanics differ from those of Fallout1/2. These modifiers are constantly checked by the game.
 +
 
 +
* FOV: When your character is out of the opponents [[FOV|Field Of View]], the sneak is automatically successful.
 
* Minimum distance: Up to 3 hexes from opponent, your character is always visible, regardless your sneak skill.
 
* Minimum distance: Up to 3 hexes from opponent, your character is always visible, regardless your sneak skill.
* Bonuses:
+
==== Bonuses ====
** [[Ghost]] perk: +30% (can increase skill above 300%).
+
* [[Ghost]] perk: +30% (can increase skill above 300%).
** Occluders: Standing behind scenery objects like barrels, tables (up to 2 hexes from them) gives you +50% bonus.
+
* Occluders: Standing behind scenery objects like barrels, tables (up to 2 hexes from them) gives you +50% bonus.
** Having active Stealth Boy in one of active slots gives 60%
+
* Having active Stealth Boy in one of active slots gives +60% to the Sneak skill.
* Penalties:
+
==== Penalties ====
** Weight: -1% per 1 kg of the total weight of items you carry.
+
* Weight: -1% per 1 kg of the total weight of items you carry.
** Armor:
+
* Armor:
*** [[Leather Armor]] and [[Leather Armor Mark II]]: -25%
+
** [[Leather Armor]] and [[Leather Armor Mark II]]: -25%
*** All metal armors and combat armors: -50%
+
** All metal armors and combat armors: -50%
*** Powered armors: Sneak is disabled.
+
** Powered armors ([[PA]], [[APA]], etc.): Sneak is disabled.
** Direction - direction of the opponent has big impact, basically, the area around opponent is divided into four parts, and each part modifies your sneak skill value as follows:
+
==== Against an opponent ====
*** Front: -75%
+
* Direction - direction of the opponent has big impact, basically, the area around opponent is divided into four parts, and each part modifies your sneak skill value as follows:
*** Front-sides: -50%
+
** Front: -135%.
*** Back-sides: -25%
+
** Front-sides: -95%.
*** Back: No penalty.
+
** Back-sides: -55%.
 +
** Back: -15%.
 +
* If your opponent has active motion sensor in an active slot, he will have +2 [[Perception]] for the purpose of sneak detection (not capped at 10).
  
Looting bodies while sneaked has 50% chance of desneaking.
+
== Actions that make you visible again ==
 +
The following actions may remove your sneak, and make you visible again to your enemies' eyes.
  
 +
* Attacking.
 +
* Running (If you haven't taken the [[Silent Running]] perk).
 +
* Wearing a powered armor, as said above ([[PA]], [[APA]], etc).
 +
* Looting containers and bodies by "take all".
 +
* Looting bodies while sneaked has 50% chance of desneaking.
 +
* Picking up items from the ground while sneaked demands successful steal test. The weight is checked.
 +
 +
== Formula ==
 
After all bonuses and penalties have been applied, the final formula, which determines the maximum distance between the observer and the (sneaked) observed at which the latter is visible is:
 
After all bonuses and penalties have been applied, the final formula, which determines the maximum distance between the observer and the (sneaked) observed at which the latter is visible is:
 
  20 + opponent's [[Perception]] * 3 - previously calculated skill / 6
 
  20 + opponent's [[Perception]] * 3 - previously calculated skill / 6
  
== Viewing Range ==
 
 
This is the summary of viewing range against sneaking character.
 
It assumes that there are no modifiers to the sneak skill.
 
 
'''F''' - Front
 
'''FS''' - Front Sides
 
'''BS''' - Back Sides
 
'''B''' - Back
 
{| class="prettytable" style="text-align: center"
 
! colspan="4" | Skill
 
|
 
! colspan="10" | Observer Perception
 
 
|-
 
! F
 
! FS
 
! BS
 
! B
 
! Rng Mod
 
! 1
 
! 2
 
! 3
 
! 4
 
! 5
 
! 6
 
! 7
 
! 8
 
! 9
 
! 10
 
 
|-
 
| '''75'''
 
| '''50'''
 
| '''25'''
 
| '''0'''
 
| 0
 
| 23
 
| 26
 
| 29
 
| 32
 
| 35
 
| 38
 
| 41
 
| 44
 
| 47
 
| 50
 
 
|-
 
| '''81'''
 
| '''56'''
 
| '''31'''
 
| '''6'''
 
| -1
 
| 22
 
| 25
 
| 28
 
| 31
 
| 34
 
| 37
 
| 40
 
| 43
 
| 46
 
| 49
 
 
|-
 
| '''87'''
 
| '''62'''
 
| '''37'''
 
| '''12'''
 
| -2
 
| 21
 
| 24
 
| 27
 
| 30
 
| 33
 
| 36
 
| 39
 
| 42
 
| 45
 
| 48
 
 
|-
 
| '''93'''
 
| '''68'''
 
| '''43'''
 
| '''18'''
 
| -3
 
| 20
 
| 23
 
| 26
 
| 29
 
| 32
 
| 35
 
| 38
 
| 41
 
| 44
 
| 47
 
 
|-
 
| '''99'''
 
| '''74'''
 
| '''49'''
 
| '''24'''
 
| -4
 
| 19
 
| 22
 
| 25
 
| 28
 
| 31
 
| 34
 
| 37
 
| 40
 
| 43
 
| 46
 
 
|-
 
| '''105'''
 
| '''80'''
 
| '''55'''
 
| '''30'''
 
| -5
 
| 18
 
| 21
 
| 24
 
| 27
 
| 30
 
| 33
 
| 36
 
| 39
 
| 42
 
| 45
 
 
|-
 
| '''111'''
 
| '''86'''
 
| '''61'''
 
| '''36'''
 
| -6
 
| 17
 
| 20
 
| 23
 
| 26
 
| 29
 
| 32
 
| 35
 
| 38
 
| 41
 
| 44
 
 
|-
 
| '''117'''
 
| '''92'''
 
| '''67'''
 
| '''42'''
 
| -7
 
| 16
 
| 19
 
| 22
 
| 25
 
| 28
 
| 31
 
| 34
 
| 37
 
| 40
 
| 43
 
 
|-
 
| '''123'''
 
| '''98'''
 
| '''73'''
 
| '''48'''
 
| -8
 
| 15
 
| 18
 
| 21
 
| 24
 
| 27
 
| 30
 
| 33
 
| 36
 
| 39
 
| 42
 
 
|-
 
| '''129'''
 
| '''104'''
 
| '''79'''
 
| '''54'''
 
| -9
 
| 14
 
| 17
 
| 20
 
| 23
 
| 26
 
| 29
 
| 32
 
| 35
 
| 38
 
| 41
 
 
|-
 
| '''135'''
 
| '''110'''
 
| '''85'''
 
| '''60'''
 
| -10
 
| 13
 
| 16
 
| 19
 
| 22
 
| 25
 
| 28
 
| 31
 
| 34
 
| 37
 
| 40
 
 
|-
 
| '''141'''
 
| '''116'''
 
| '''91'''
 
| '''66'''
 
| -11
 
| 12
 
| 15
 
| 18
 
| 21
 
| 24
 
| 27
 
| 30
 
| 33
 
| 36
 
| 39
 
 
|-
 
| '''147'''
 
| '''122'''
 
| '''97'''
 
| '''72'''
 
| -12
 
| 11
 
| 14
 
| 17
 
| 20
 
| 23
 
| 26
 
| 29
 
| 32
 
| 35
 
| 38
 
 
|-
 
| '''153'''
 
| '''128'''
 
| '''103'''
 
| '''78'''
 
| -13
 
| 10
 
| 13
 
| 16
 
| 19
 
| 22
 
| 25
 
| 28
 
| 31
 
| 34
 
| 37
 
 
|-
 
| '''159'''
 
| '''134'''
 
| '''109'''
 
| '''84'''
 
| -14
 
| 9
 
| 12
 
| 15
 
| 18
 
| 21
 
| 24
 
| 27
 
| 30
 
| 33
 
| 36
 
 
|-
 
| '''165'''
 
| '''140'''
 
| '''115'''
 
| '''90'''
 
| -15
 
| 8
 
| 11
 
| 14
 
| 17
 
| 20
 
| 23
 
| 26
 
| 29
 
| 32
 
| 35
 
 
|-
 
| '''171'''
 
| '''146'''
 
| '''121'''
 
| '''96'''
 
| -16
 
| 7
 
| 10
 
| 13
 
| 16
 
| 19
 
| 22
 
| 25
 
| 28
 
| 31
 
| 34
 
 
|-
 
| '''177'''
 
| '''152'''
 
| '''127'''
 
| '''102'''
 
| -17
 
| 6
 
| 9
 
| 12
 
| 15
 
| 18
 
| 21
 
| 24
 
| 27
 
| 30
 
| 33
 
 
|-
 
| '''183'''
 
| '''158'''
 
| '''133'''
 
| '''108'''
 
| -18
 
| 5
 
| 8
 
| 11
 
| 14
 
| 17
 
| 20
 
| 23
 
| 26
 
| 29
 
| 32
 
 
|-
 
| '''189'''
 
| '''164'''
 
| '''139'''
 
| '''114'''
 
| -19
 
| 4
 
| 7
 
| 10
 
| 13
 
| 16
 
| 19
 
| 22
 
| 25
 
| 28
 
| 31
 
 
|-
 
| '''195'''
 
| '''170'''
 
| '''145'''
 
| '''120'''
 
| -20
 
| '''3'''
 
| 6
 
| 9
 
| 12
 
| 15
 
| 18
 
| 21
 
| 24
 
| 27
 
| 30
 
 
|-
 
| '''201'''
 
| '''176'''
 
| '''151'''
 
| '''126'''
 
| -21
 
| '''3'''
 
| 5
 
| 8
 
| 11
 
| 14
 
| 17
 
| 20
 
| 23
 
| 26
 
| 29
 
 
|-
 
| '''207'''
 
| '''182'''
 
| '''157'''
 
| '''132'''
 
| -22
 
| '''3'''
 
| 4
 
| 7
 
| 10
 
| 13
 
| 16
 
| 19
 
| 22
 
| 25
 
| 28
 
 
|-
 
| '''213'''
 
| '''188'''
 
| '''163'''
 
| '''138'''
 
| -23
 
| '''3'''
 
| '''3'''
 
| 6
 
| 9
 
| 12
 
| 15
 
| 18
 
| 21
 
| 24
 
| 27
 
 
|-
 
| '''219'''
 
| '''194'''
 
| '''169'''
 
| '''144'''
 
| -24
 
| '''3'''
 
| '''3'''
 
| 5
 
| 8
 
| 11
 
| 14
 
| 17
 
| 20
 
| 23
 
| 26
 
 
|-
 
| '''225'''
 
| '''200'''
 
| '''175'''
 
| '''150'''
 
| -25
 
| '''3'''
 
| '''3'''
 
| 4
 
| 7
 
| 10
 
| 13
 
| 16
 
| 19
 
| 22
 
| 25
 
 
|-
 
| '''231'''
 
| '''206'''
 
| '''181'''
 
| '''156'''
 
| -26
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 6
 
| 9
 
| 12
 
| 15
 
| 18
 
| 21
 
| 24
 
 
|-
 
| '''237'''
 
| '''212'''
 
| '''187'''
 
| '''162'''
 
| -27
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 5
 
| 8
 
| 11
 
| 14
 
| 17
 
| 20
 
| 23
 
 
|-
 
| '''243'''
 
| '''218'''
 
| '''193'''
 
| '''168'''
 
| -28
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 4
 
| 7
 
| 10
 
| 13
 
| 16
 
| 19
 
| 22
 
 
|-
 
| '''249'''
 
| '''224'''
 
| '''199'''
 
| '''174'''
 
| -29
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 6
 
| 9
 
| 12
 
| 15
 
| 18
 
| 21
 
 
|-
 
| '''255'''
 
| '''230'''
 
| '''205'''
 
| '''180'''
 
| -30
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 5
 
| 8
 
| 11
 
| 14
 
| 17
 
| 20
 
 
|-
 
| '''261'''
 
| '''236'''
 
| '''211'''
 
| '''186'''
 
| -31
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 4
 
| 7
 
| 10
 
| 13
 
| 16
 
| 19
 
 
|-
 
| '''267'''
 
| '''242'''
 
| '''217'''
 
| '''192'''
 
| -32
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 6
 
| 9
 
| 12
 
| 15
 
| 18
 
 
|-
 
| '''273'''
 
| '''248'''
 
| '''223'''
 
| '''198'''
 
| -33
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 5
 
| 8
 
| 11
 
| 14
 
| 17
 
 
|-
 
| '''279'''
 
| '''254'''
 
| '''229'''
 
| '''204'''
 
| -34
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 4
 
| 7
 
| 10
 
| 13
 
| 16
 
 
|-
 
| '''285'''
 
| '''260'''
 
| '''235'''
 
| '''210'''
 
| -35
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 6
 
| 9
 
| 12
 
| 15
 
 
|-
 
| '''291'''
 
| '''266'''
 
| '''241'''
 
| '''216'''
 
| -36
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 5
 
| 8
 
| 11
 
| 14
 
 
|-
 
| '''297'''
 
| '''272'''
 
| '''247'''
 
| '''222'''
 
| -37
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 4
 
| 7
 
| 10
 
| 13
 
 
|-
 
| '''303'''
 
| '''278'''
 
| '''253'''
 
| '''228'''
 
| -38
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 6
 
| 9
 
| 12
 
 
|-
 
| '''309'''
 
| '''284'''
 
| '''259'''
 
| '''234'''
 
| -39
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 5
 
| 8
 
| 11
 
 
|-
 
| '''315'''
 
| '''290'''
 
| '''265'''
 
| '''240'''
 
| -40
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 4
 
| 7
 
| 10
 
 
|-
 
| '''321'''
 
| '''296'''
 
| '''271'''
 
| '''246'''
 
| -41
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 6
 
| 9
 
 
|-
 
| '''327'''
 
| '''302'''
 
| '''277'''
 
| '''252'''
 
| -42
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 5
 
| 8
 
 
|-
 
|
 
| '''308'''
 
| '''283'''
 
| '''258'''
 
| -43
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 4
 
| 7
 
 
|-
 
|
 
| '''314'''
 
| '''289'''
 
| '''264'''
 
| -44
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 6
 
 
|-
 
|
 
| '''320'''
 
| '''295'''
 
| '''270'''
 
| -45
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 5
 
 
|-
 
|
 
| '''326'''
 
| '''301'''
 
| '''276'''
 
| -46
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| 4
 
 
|-
 
|
 
|
 
| '''307'''
 
| '''282'''
 
| -47
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
 
|-
 
|
 
|
 
| '''313'''
 
| '''288'''
 
| -48
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
 
|-
 
|
 
|
 
| '''319'''
 
| '''294'''
 
| -49
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
 
|-
 
|
 
|
 
| '''325'''
 
| '''300'''
 
| -50
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
| '''3'''
 
 
|}
 
 
Also, note that your character won't be visible when he is out of observer field of view range, which depends on [[Perception]] and look direction. Table below shows summary of FOV ranges.
 
 
{| class="wikitable" style="text-align: center"
 
! Observer PE
 
! Front
 
! Front-Side
 
! Back-Side
 
! Back
 
 
|-
 
! 1
 
| 23
 
| 19
 
| 14
 
| 12
 
 
|-
 
! 2
 
| 26
 
| 21
 
| 16
 
| 13
 
 
|-
 
! 3
 
| 29
 
| 24
 
| 18
 
| 15
 
 
|-
 
! 4
 
| 32
 
| 26
 
| 20
 
| 16
 
 
|-
 
! 5
 
| 35
 
| 28
 
| 21
 
| 18
 
 
|-
 
! 6
 
| 38
 
| 31
 
| 23
 
| 19
 
 
|-
 
! 7
 
| 41
 
| 33
 
| 25
 
| 21
 
 
|-
 
! 8
 
| 44
 
| 36
 
| 27
 
| 22
 
 
|-
 
! 9
 
| 47
 
| 38
 
| 29
 
| 24
 
 
|-
 
! 10
 
| 50
 
| 40
 
| 30
 
| 25
 
 
|-
 
! 9 + [[Sharpshooter]]
 
| 53
 
| 43
 
| 32
 
| 27
 
 
|-
 
! 10 + [[Sharpshooter]]
 
| 56
 
| 45
 
| 34
 
| 28
 
 
|}
 
 
Note : Having active motion sensor (in an active slot) gives +2 Perception for the purpose of sneakers detection (it's not capped at 10).
 
  
 
[[Category:Skills]]
 
[[Category:Skills]]

Revision as of 17:46, 31 August 2010

Skill
Sneak
Sneak.gif
Modifies Chance of being detected while sneaking
Initial level 5% + 3 x Agility
Related perks Silent Running, Ghost, Silent Death, Thief
Related traits Small Frame

"Quiet movement, and the ability to remain unnoticed. If successful, you will be much harder to locate. You cannot run and sneak at the same time, unless you take Silent Running perk."

Sneak allows a player to become totally invisible, unless he performs an attack. If he has the Silent Running perk, he can even run while being sneaked, which allows him to infiltrate enemy lines, for example. However, players can see you if you get too close to him, depending on many things (See the Modifiers section for more informations).


Contents

Modifiers

Sneak is subject to many modifiers, its mechanics differ from those of Fallout1/2. These modifiers are constantly checked by the game.

  • FOV: When your character is out of the opponents Field Of View, the sneak is automatically successful.
  • Minimum distance: Up to 3 hexes from opponent, your character is always visible, regardless your sneak skill.

Bonuses

  • Ghost perk: +30% (can increase skill above 300%).
  • Occluders: Standing behind scenery objects like barrels, tables (up to 2 hexes from them) gives you +50% bonus.
  • Having active Stealth Boy in one of active slots gives +60% to the Sneak skill.

Penalties

  • Weight: -1% per 1 kg of the total weight of items you carry.
  • Armor:

Against an opponent

  • Direction - direction of the opponent has big impact, basically, the area around opponent is divided into four parts, and each part modifies your sneak skill value as follows:
    • Front: -135%.
    • Front-sides: -95%.
    • Back-sides: -55%.
    • Back: -15%.
  • If your opponent has active motion sensor in an active slot, he will have +2 Perception for the purpose of sneak detection (not capped at 10).

Actions that make you visible again

The following actions may remove your sneak, and make you visible again to your enemies' eyes.

  • Attacking.
  • Running (If you haven't taken the Silent Running perk).
  • Wearing a powered armor, as said above (PA, APA, etc).
  • Looting containers and bodies by "take all".
  • Looting bodies while sneaked has 50% chance of desneaking.
  • Picking up items from the ground while sneaked demands successful steal test. The weight is checked.

Formula

After all bonuses and penalties have been applied, the final formula, which determines the maximum distance between the observer and the (sneaked) observed at which the latter is visible is:

20 + opponent's Perception * 3 - previously calculated skill / 6
Personal tools
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