Shield

From Open Perpetuum

WARNING! The information on the wiki will not correlate with what you see in the client. This is intentional and intends to correct outdated information in the client

Shields work by creating a barrier between you and an outside world, fed by energy of your accumulator. This unfortunately means that you won't be able to use your own weapons while it's active.

The main parameter of the shield is it's absorption ration, i.e. how much accumulator it uses to tank one point of damage. Note that shield does not have any resistances.

Interaction with surface size

Shield has a certain fixes size that it can cover without sacrificing absorption. However, the game client also calculates this in reverse as well, adding the efficiency if you use bigger shield on small robot. This is incorrect and has been changed a long time ago.

Correct way to calculate would be to take base value of the shileld and apply robot, extension, Shield Hardener and NEXUS multipliers on top.

What it boils down to is, using shield bigger than T3 small on light bots and T4 small on assaults is useless.

Mediums shields also have a peculiarity. T4 shields are the only ones usable on heavies, and T1-T3 are optimal for mechs.

Shield Generators

Installed in the Leg slots

In-game description: When equipped onto a robot this module emits a protective power field to stop incoming damage by using up the accumulator's energy. This accumulator unit/damage conversion rate is displayed as the AP/HP measure. There is however a major drawback to this kind of defense: when the shield is turned on, you cannot use any of your own weapons.


Small

Usually used on robots sized light to assault. Note that shield radius should ideally match your bot as close as possible, there is no benefit of having a radius bigger than the robot.

Module Tech level CPU use Reactor use Mass Radius Cycle time Absorption ratio Accu* use
Flawed small shield generator T0 45 TF 50 RP 200 kg 4.5 m 3s 0.833 AP/HP 1 AP
Standard small shield generator T1 45 TF 50 RP 200 kg 4.5 m 2.75s 0.5 AP/HP 1 AP
Parsvaal-IP small shield generator T2 40 TF 45 RP 180 kg 4.5 m 2.5s 0.5 AP/HP 1 AP
Parsvaal-IP small shield generator prototype T2P 38 TF 43 RP 135 kg 4.5 m 2.5s 0.5 AP/HP 1 AP
Ovostec-Yellowray small shield generator T3 47 TF 53 RP 210 kg 4.5 m 2.25s 0.455 AP/HP 1 AP
Niani small shield generator T3- 52 TF 59 RP 180 kg 4.5 m 2.375s 0.455 AP/HP 1 AP
Ovostec-Yellowray small shield generator prototype T3P 45 TF 50 RP 157.5 kg 4.5 m 2.25s 0.455 AP/HP 1 AP
SBA-200 Forebrace small shield generator T4 50 TF 57 RP 230 kg 6 m 2s 0.5 AP/HP 1 AP
SBA-200 Forebrace small shield generator prototype T4P 48 TF 54 RP 172.5 kg 6 m 2s 0.5 AP/HP 1 AP

Medium

Used on bots sized mech to heavy glider

Module Tech level CPU use Reactor use Mass Radius Cycle time Absorption ratio Accu* use
Flawed medium shield generator T0 65 TF 250 RP 400 kg 8 m 12s 0.833 AP/HP 12.5 AP
Standard medium shield generator T1 65 TF 250 RP 400 kg 12 m 10s 0.5 AP/HP 12.5 AP
Parsvaal-IIX medium shield generator T2 60 TF 225 RP 360 kg 12 m 9.5s 0.5 AP/HP 12.5 AP
Parsvaal-IIX medium shield generator prototype T2P 57 TF 214 RP 270 kg 12 m 9.5s 0.5 AP/HP 10 AP
Ovostec-Yellowray II. medium shield generator T3 67 TF 270 RP 440 kg 12 m 7.75s 0.455 AP/HP 12.5 AP
Niani medium shield generator T3- 74 TF 300 RP 360 kg 12 m 8.5s 0.455 AP/HP 12.5 AP
Ovostec-Yellowray II. medium shield generator prototype T3P 64 TF 257 RP 330 kg 12 m 7.75s 0.455 AP/HP 10 AP
Penik medium shield generator T4 70 TF 285 RP 470 kg 25 m 6.5s 0.5 AP/HP 12.5 AP
Penik medium shield generator prototype T4P 67 TF 271 RP 352.5 kg 25 m 6.5s 0.5 AP/HP 10 AP

Large

Used by Destroyers

Module Tech level CPU use Reactor use Mass Radius Cycle time Absorption ratio Accu* use
Standard large shield generator prototype T0 325 TF 1250 RP 800 kg 30 m 10s 0.525 AP/HP 30 AP
Standard large shield generator T1 325 TF 1250 RP 800 kg 30 m 10s 0.525 AP/HP 30 AP
AVA-Spintarge large shield generator T2 300 TF 1125 RP 720 kg 30 m 9.5s 0.525 AP/HP 25 AP
AVA-Spintarge large shield generator prototype T2P 300 TF 1125 RP 720 kg 30 m 9.5s 0.525 AP/HP 25 AP
Gegel Ioner large shield generator T3 335 TF 1350 RP 880 kg 30 m 7.75s 0.5 AP/HP 30 AP
Gegel loner large shield generator prototype T3P 335 TF 1350 RP 880 kg 30 m 7.75s 0.5 AP/HP 30 AP
Umbeler large shield generator T4 350 TF 1425 RP 940 kg 33 m 6.5s 0.475 AP/HP 30 AP
Umbeler large shield generator prototype T4P 350 TF 1425 RP 940 kg 33 m 6.5s 0.475 AP/HP 30 AP

Shield Hardeners

Installed in the Head slots

Increases you shield's absorption stat by the value stated on the hardener.

Module Tech Level CPU Reactor Mass Shield

Absorption

Flawed shield hardener T0 50 TF 20 RP 300 kg +15%
Standard shield hardener T1 50 TF 20 RP 300 kg +20%
Bund shield hardener T2 48 TF 18 RP 270 kg +20%
Bund shield hardener prototype T2P 46 TF 17 RP 202.50 kg +20%
Niani shield hardener T3- 55 TF 23 RP 270 kg +25%
Patronus shield hardener T3 50 TF 20 RP 300 kg +25%
Patronus shield hardener prototype T3P 48 TF 19 RP 225 kg +25%
Guardian shield hardener T4 55 TF 23 RP 310 kg +30%
Guardian shield hardener prototype T4P 52 TF 22 RP 232.50 kg +30%


NEXUS Interaction

see NEXUS

Formulas

WIP, might not be 100% correct

Shield absorption

Shield absorption corrected for surface size

  • AbsorptionCorrected = Max(SurfaceArea/Shield size,1) x Absorption
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