Difference between revisions of "Firefoam shell"

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{{Define|Crafted Resource
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{{Infobox main|resource
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| always haulable = true
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| name = Firefoam shell
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| image = Firefoam shell
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| image = Shell firefoam c.png
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| def name = Shell_Firefoam
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| description = A pressurized shell filled with fire-retardant foam. Can be fired from mortars or installed as a trap. Explodes when damaged.
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| description = A pressurized shell filled with fire-extinguishing foam. Can be fired from mortars or installed as a trap. Explodes when damaged.
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| type = Crafted resources
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| draw gui overlay = true
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| type2 = Mortar shell
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| graphic class = Graphic_Single
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| tech level = Industrial
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| graphic path = Things/Item/Resource/Shell/Shell_Firefoam
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| path cost = 14
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| label = firefoam shell
 
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| parent name = MakeableShellBase
 
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| path cost = 15
 
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| resource readout priority = Middle
 
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| rotatable = false
 
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| selectable = true
 
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| sound drop = Standard_Drop
 
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| sound interact = Metal_Drop
 
 
| stack limit = 25
 
| stack limit = 25
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| thing class = ThingWithComps
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| beauty =  
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| ticker type = Normal
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| flammability = 1.0
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| use hit points = true
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| marketvalue = 55
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| deterioration rate base = 1.5
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| mass base = 1.25
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| flammability base = 1.0
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| hp = 60
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| market value base = 10
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| damage type = Extinguish
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| max hit points base = 70
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| damage = 0
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| mass = 3.5
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| deterioration = 1.5
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| velocity = 41
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| blastRadius =  5
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| skill 1 = Crafting
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| skill 1 level = 4
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| work to make = 800
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| production facility 1 = Machining table
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| research = Firefoam
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| resource 1 = Steel
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| resource 1 amount = 25
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| defName = Shell_Firefoam
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| thingCategories = MortarShells
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| tradeTags = MortarShell
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| page verified for version = 1.3.3066
 
}}
 
}}
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<onlyinclude>The [[firefoam shell]] is a type of [[mortar shell]] that upon exploding, spreads [[firefoam]] in a 5-tile radius, extinguishing all fires and preventing new ones.</onlyinclude>
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The '''firefoam shell''' is a type of [[mortar shell]] that upon exploding, spreads [[firefoam]] in a 5-tile radius, extinguishing all fires and preventing new ones.
  
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== Crafting ==
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== Acquisition ==
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It is made using 30 [[steel]] at a [[machining table]].
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{{Acquisition}} The steel cost is increased to 35 if the [[AI Storytellers#Classic mortars|Classic Mortars]] difficulty option is enabled.
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It can also be purchased from [[traders]].
  
 
== Usage ==
 
== Usage ==
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It is supposedly used for firefighting, due to the fire-extinguishing properties of the residual firefoam. It requires manual targeting to use, as colonists manning mortars don't automatically aim at fires.
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{{Ingredient List|noCollapse=true}}
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== Summary ==
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[[File:Firefoam shell radius.png|thumb|left|From smallest to largest, the radius of the shell's AoE when fired, when a single shell cooks off, and when an entire stack cooks off.]]
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When fired from a mortar, {{lc:{{P|Name}}}}s spreads [[firefoam]] in a {{P|Blast Radius}} tile radius, extinguishing all fires and preventing new ones.
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When damaged beyond 70% of its health, it will explode after between {{ticks|30}} and {{ticks|60}}, spread firefoam in a radius around itself. The radius depends on the quantity in the stack, with a single shell covering a 9.9 tile radius, and expanding this radius proportional to the square root of the stack size times 0.4 up to a maximum radius of {{#expr: 9.9+((24*0.4)^0.5) round 2}} tiles at a full stack of 25.
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They are also used in the construction of [[IED firefoam  trap]]s.
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== Analysis ==
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Actually firing a firefoam shell from a mortar is very niche. The tiny, 5-tile radius isn't enough to cover large-scale fires, but mortars lack the precision to drop on small fires accurately. Due to the mortar's blind spot, it cannot extinguish fires inside your colony. For fires outside of your colony, the game will automatically start [[rain]] whenever fires get too big - unless a [[weather controller]]{{RoyaltyIcon}} is forcing fog. Generally, [[foam turret]]s or [[firefoam pop pack]]s are better as mobile fire extinguishers. Even [[Pyromaniac]]s can operate either.
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Firefoam shells are most useful to create [[IED firefoam trap]]s. IEDs must be directly lit on fire or triggered by a colonist, but are cheaper to create than a [[firefoam popper]], while having a much larger radius than the [[firefoam pop pack]]. In theory, destroying a firefoam shell creates the same firefoam as the IED trap for half the cost. However, the shell must be damaged to set off; while guns cannot damage the shell, gunshots ''can'' trigger an IED.
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== Gallery ==
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<gallery>
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Shell firefoam a.png|One firefoam shell
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Shell firefoam b.png|Partial stack
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Shell firefoam c.png|Full stack
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</gallery>
  
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However, it is somewhat cost-ineffective, as its tiny 5-tile radius isn't enough to cover large-scale fires, and it lacks the precision to be able to be dropped onto small fires accurately. Firing these shells to extinguish fires will quickly eat through your supply of steel. It cannot extinguish fires inside your colony properly as the mortar's blind spot prohibits it from hitting fires close to it.
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== Version history ==
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* [[Version/0.18.1722|0.18.1722]] - Added.
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* [[Version/1.3.3066|1.3.3066]] - Steel requirement decreased from 35 -> 25 unless Classic Mortar difficulty option enabled.
  
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It does allow colonists incapable of firefighting to help with firefighting efforts, however, which can be handy if you need more hands on deck in controlling an out-of-control wildfire.
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{{Nav|security|wide}}
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[[Category: Mortar shells]]

Latest revision as of 23:53, 28 September 2024

Firefoam shell

Firefoam shell

A pressurized shell filled with fire-retardant foam. Can be fired from mortars or installed as a trap. Explodes when damaged.

Base Stats

Type
Crafted resources – Mortar shell
Tech Level
Industrial
Market Value
55 Silver
Stack Limit
25
Mass
1.25 kg
HP
60
Deterioration Rate
1.5
Flammability
100%
Path Cost
14 (48%)

Ranged Combat

Damage
0 dmg (Extinguish)
Velocity
41 (m/s)
Blast Radius
5

Creation

Crafted At
Machining table
Required Research
Firefoam
Skill Required
Crafting 4
Work To Make
800 ticks (13.33 secs)
Resources to make
Steel 25
Technical
defName
Shell_Firefoam
thingCategories
MortarShells
tradeTags
MortarShell


The firefoam shell is a type of mortar shell that upon exploding, spreads firefoam in a 5-tile radius, extinguishing all fires and preventing new ones.

Acquisition[edit]

Firefoam shells can be crafted at a machining table once the firefoam research project has been completed. Each requires Steel 25 Steel, 800 ticks (13.33 secs) of work modified by the general labor speed of the crafter, and a crafting skill of 4. The steel cost is increased to 35 if the Classic Mortars difficulty option is enabled.

It can also be purchased from traders.

Usage[edit]

  • Product Ingredients Type [ExpandCollapse]
    IED firefoam trap IED firefoam trap Firefoam shell 2 Building - Security

    • Summary[edit]

    From smallest to largest, the radius of the shell's AoE when fired, when a single shell cooks off, and when an entire stack cooks off.

    When fired from a mortar, firefoam shells spreads firefoam in a 5 tile radius, extinguishing all fires and preventing new ones.

    When damaged beyond 70% of its health, it will explode after between 30 ticks (0.5 secs) and 60 ticks (1 sec), spread firefoam in a radius around itself. The radius depends on the quantity in the stack, with a single shell covering a 9.9 tile radius, and expanding this radius proportional to the square root of the stack size times 0.4 up to a maximum radius of 13 tiles at a full stack of 25.

    They are also used in the construction of IED firefoam traps.

    Analysis[edit]

    Actually firing a firefoam shell from a mortar is very niche. The tiny, 5-tile radius isn't enough to cover large-scale fires, but mortars lack the precision to drop on small fires accurately. Due to the mortar's blind spot, it cannot extinguish fires inside your colony. For fires outside of your colony, the game will automatically start rain whenever fires get too big - unless a weather controllerContent added by the Royalty DLC is forcing fog. Generally, foam turrets or firefoam pop packs are better as mobile fire extinguishers. Even Pyromaniacs can operate either.

    Firefoam shells are most useful to create IED firefoam traps. IEDs must be directly lit on fire or triggered by a colonist, but are cheaper to create than a firefoam popper, while having a much larger radius than the firefoam pop pack. In theory, destroying a firefoam shell creates the same firefoam as the IED trap for half the cost. However, the shell must be damaged to set off; while guns cannot damage the shell, gunshots can trigger an IED.

    Gallery[edit]

    • One firefoam shell

    • Partial stack

    • Full stack

    Version history[edit]

    • 0.18.1722 - Added.
    • 1.3.3066 - Steel requirement decreased from 35 -> 25 unless Classic Mortar difficulty option enabled.
    Architect
    Security
    Barricade • Sandbags • Spike trap
    (research)
    Autocannon turret • Foam turret • Mini-turret • Rocketswarm launcher • Uranium slug turret • Mortar
    IEDs
    IED trap • IED incendiary trap • IED EMP trap • IED firefoam trap • IED smoke trap • IED antigrain warhead trap • IED tox trap Content added by the Biotech DLC • IED deadlife trap Content added by the Anomaly DLC
    Related
    Antigrain warhead • EMP shell • Firefoam shell • High-explosive shell • Incendiary shell • Smoke shell • Tox shell Content added by the Biotech DLC • Deadlife shell Content added by the Anomaly DLC

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