Official Factorio Wiki - User contributions [en]

Damage

2017-07-12T06:27:25Z

Merssedes: modify damage at example

{{Languages}}

== Overview ==

In Factorio, entities have health, can die/be destroyed, and have resistances. ''Damage'' is defined as the concept of lowering an entity's health by using an attack, such as a gun firing at it, or a biter chewing on it. An entity's resistances will define exactly how much damage the entity will take off of an arbitrary attack.

The [[player|character]]'s maximum health is 100 (without [[energy shield]]s). Other entities' health values are listed in their individual entries.

== Achievements ==
{{Main|Achievements}}
The concept of damage is directly connected to the following achievements:
* Golem
Take 500 damage in one hit and survive.

* Pyromaniac

Destroy 10k trees with fire.
* Run Forrest run

Destroy 100 trees by impact.
* Steamrolled

Destroy 10 spawners by impact.
* Watch your step

Get killed by a moving [[Diesel locomotive|locomotive]].

== Damage Types ==
{|class="wikitable"
|-
! Damage type !! Used by
|-
| Physical || Bullets ([[Regular magazine|regular]]/[[Piercing rounds magazine|piercing]]), shotgun ([[Shotgun shells|regular]]/[[Piercing shotgun shells|piercing]]), [[Enemies#Biters|biters]], axe ([[Iron axe|iron]]/[[Steel axe|steel]]), collision (of [[Diesel locomotive|train]]/[[car]])
|-
| Fire || [[Flamethrower]]
|-
| Acid || [[Enemies#Worms|Worm Turrets]], [[Enemies#Spitters|Spitters]]
|-
| Poison || [[Poison capsule]]
|-
| Explosion || [[Rocket|Rockets]], [[Explosive rocket|Explosive Rockets]], [[Grenade]], [[Cluster grenade]]
|-
| Laser || [[Turret#Laser Turrets|Laser turrets]], [[Distractor capsule|distraction]]/[[Destroyer capsule|destroyer robots]], [[personal laser defense]]
|}
== Resistance ==
Resistance has two aspects:
* Percentile resistance
Percentile resistance reduces the damage by the specified percent. If the percentage is 100%, the entity is immune to the damage. As an example, an entity having 25% resistance to 100 bullet damage would take 75 damage instead.

* Decrease, or "flat" resistance
Decrease resistance decreases the damage by specified number as long as the result damage wouldn't be less than zero. If the result damage would be less than 0, the extra resistance is used as denominator in the fraction of damage that is going to be dealt.

=== Display of resistances ===

In Factorio, resistances are displayed as such:

Decrease resistance/Percent resistance

So, an entity displaying 10/20% resistance to fire means that that entity has 10 flat resistance and 20% percentile resistance to fire. So, if said entity were to take 30 fire damage, they would instead take 16 damage, after resistances were applied.

== Formulas ==

=== Decrease < Damage ===
Result damage = (Damage - Decrease) * (1 - Percentage)
=== Decrease >= Damage ===
Result damage = 1 / (2 + Decrease - Damage) * (1 - Percentage)

An example table of different resistances and what the result damage would be:

{| class="wikitable"
|-
! Damage !! Resistance !! Result damage (0% damage loss)
|-
| 5 || 0 || 5
|-
| 5 || 1 || 4
|-
| 5 || 2 || 3
|-
| 5 || 3 || 2
|-
| 5 || 4 || 1
|-
| 5 || 5 || 1/2
|-
| 5 || 6 || 1/3
|-
| 5 || 7 || 1/4
|-
| 5 || 8 || 1/5
|-
| ... || ... || ...
|}

Talk:Damage

2017-07-11T16:00:54Z

Merssedes: Damage and flat resistance

After some testing in version 0.15.28 found out two things:

1) percentile resistance is applied second (i've edited the page about it);

2) flat resistance works little different than it's wrote in wiki:

[code]

let D = damage - flat resistance

if D < 1 then let D = 1 / (2 - D)

D is resulting damage

[/code]

This differs from what written in wiki in case of (damage - flat resistance) in range from 0 to 1 exclusive.

Don't really know how to correctly write it in wiki, so post it in discussion for now.

Damage

2017-07-11T15:50:00Z

Merssedes: /* Resistance */ after some testing on version 0.15.28 turned out that precentile resistance is applies second, wich corellates with formulas in next part of the page.

{{Languages}}

== Overview ==

In Factorio, entities have health, can die/be destroyed, and have resistances. ''Damage'' is defined as the concept of lowering an entity's health by using an attack, such as a gun firing at it, or a biter chewing on it. An entity's resistances will define exactly how much damage the entity will take off of an arbitrary attack.

The [[player|character]]'s maximum health is 100 (without [[energy shield]]s). Other entities' health values are listed in their individual entries.

== Achievements ==
{{Main|Achievements}}
The concept of damage is directly connected to the following achievements:
* Golem
Take 500 damage in one hit and survive.

* Pyromaniac

Destroy 10k trees with fire.
* Run Forrest run

Destroy 100 trees by impact.
* Steamrolled

Destroy 10 spawners by impact.
* Watch your step

Get killed by a moving [[Diesel locomotive|locomotive]].

== Damage Types ==
{|class="wikitable"
|-
! Damage type !! Used by
|-
| Physical || Bullets ([[Regular magazine|regular]]/[[Piercing rounds magazine|piercing]]), shotgun ([[Shotgun shells|regular]]/[[Piercing shotgun shells|piercing]]), [[Enemies#Biters|biters]], axe ([[Iron axe|iron]]/[[Steel axe|steel]]), collision (of [[Diesel locomotive|train]]/[[car]])
|-
| Fire || [[Flamethrower]]
|-
| Acid || [[Enemies#Worms|Worm Turrets]], [[Enemies#Spitters|Spitters]]
|-
| Poison || [[Poison capsule]]
|-
| Explosion || [[Rocket|Rockets]], [[Explosive rocket|Explosive Rockets]], [[Grenade]], [[Cluster grenade]]
|-
| Laser || [[Turret#Laser Turrets|Laser turrets]], [[Distractor capsule|distraction]]/[[Destroyer capsule|destroyer robots]], [[personal laser defense]]
|}
== Resistance ==
Resistance has two aspects:
* Percentile resistance
Percentile resistance reduces the damage by the specified percent. If the percentage is 100%, the entity is immune to the damage. As an example, an entity having 25% resistance to 100 bullet damage would take 75 damage instead.

* Decrease, or "flat" resistance
Decrease resistance decreases the damage by specified number as long as the result damage wouldn't be less than zero. If the result damage would be less than 0, the extra resistance is used as denominator in the fraction of damage that is going to be dealt.

=== Display of resistances ===

In Factorio, resistances are displayed as such:

Decrease resistance/Percent resistance

So, an entity displaying 10/20% resistance to fire means that that entity has 10 flat resistance and 20% percentile resistance to fire. So, if said entity were to take 30 fire damage, they would instead take 14 damage, after resistances were applied.

== Formulas ==

=== Decrease < Damage ===
Result damage = (Damage - Decrease) * (1 - Percentage)
=== Decrease >= Damage ===
Result damage = 1 / (2 + Decrease - Damage) * (1 - Percentage)

An example table of different resistances and what the result damage would be:

{| class="wikitable"
|-
! Damage !! Resistance !! Result damage (0% damage loss)
|-
| 5 || 0 || 5
|-
| 5 || 1 || 4
|-
| 5 || 2 || 3
|-
| 5 || 3 || 2
|-
| 5 || 4 || 1
|-
| 5 || 5 || 1/2
|-
| 5 || 6 || 1/3
|-
| 5 || 7 || 1/4
|-
| 5 || 8 || 1/5
|-
| ... || ... || ...
|}