Editing Incendiary shell

{{Image wanted|reason=Image of AoE and of full stack AoE (designated by color) in a style similar to [[:File:Skip shield radius.jpg]]. Detonate on tiles to show chemfuel puddle distribution}}
{{Infobox main|resource
| name = Incendiary shell
| image = Shell incendiary a.png
| description = A shell filled with flammable gel and a small explosive charge. Starts fires when detonated. Can be fired from mortars or installed as a trap. Explodes when damaged.
| type = Crafted Resources
| type2 = Mortar shell
| tech level = Industrial
| path cost = 14
| stack limit = 25
| beauty = 
| flammability = 1.0
| marketvalue = 55
| mass base = 1.25
| hp = 60
| deterioration = 1.5
| damage = 10
| damage type = Flame
| velocity = 41
| blastRadius = 2.9
| skill 1 = Crafting
| skill 1 level = 4
| work to make = 800
| production facility 1 = Machining table
| research = Mortars
| resource 1 = Steel
| resource 1 amount = 10
| resource 2 = Chemfuel
| resource 2 amount = 20
| defName = Shell_Incendiary
| thingCategories = MortarShells
| tradeTags = MortarShell
| page verified for version = 1.3.3066
}}
The '''incendiary shell''' is a type of [[mortar shell]] that explodes into a conflagration, dealing flame damage and setting the area alight.

== Acquisition ==
Incendiary shells can be crafted at a [[{{P|Production Facility 1}}]] once the [[Research#{{P|Required Research}}|{{P|Required Research}}]] research project has been completed. They require {{Required Resources}}, {{Ticks|{{P|Work To Make}} }} of work, and a [[{{P|Skill 1}}]] skill of {{P|Skill 1 Level}}. The steel cost is increased to 20 if the [[AI Storytellers#Classic mortars|Classic Mortars]] difficulty option is enabled.

They can also be purchased from [[traders]].

== Usage ==
{{Ingredient List|noCollapse=true}}

== Summary ==
When fired from a mortar, {{lc:{{P|Name}}}}s deal {{P|Damage Base}} [[Damage types#{{P|Damage Type}}|{{P|Damage Type}}]] in a {{P|Blast Radius}} tile radius. They also set the area on fire and creating [[Filth|chemfuel puddles]] which themselves burn.

When damaged beyond 70% of its health, it will explode after between {{Ticks|30}} and {{Ticks|60}}, dealing 10 [[Damage Type#Flame|Flame]] damage in a radius around itself. The radius depends on the quantity in the stack, with a single shell covering a 2.9 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: 2.9+((24*0.4)^0.5) round 2}} tiles at a full stack of 25.

They are also used in the construction of [[IED incendiary  trap]]s.

== Analysis ==
Incendiary shells are most useful against [[siege]]s - stationary targets with explosive [[mortar shell]]s to light on fire. The fire makes it more likely to "hit" an explosive target than the use of regular [[high-explosive shell]]s, but watch out for pawns with [[firefoam pop pack]]s.

Otherwise, incendiary shells are of limited use. The other "main" target of mortars, stationary [[mechanoid]]s, are completely immune to fire. For ordinary raids, fire spreads too slowly to be useful in combat. As mobile raiders are smart enough to avoid the flames, only a direct hit would cause damage. As high-explosive shells deal much more damage on direct impact, they're the superior choice. Note that the game will automatically cause [[rain]] if fires get too far out of control.

[[Siege]]s can and will use incendiary shells against you, which will ravage rooms floored with [[carpet]], fields of [[plants]], and storage rooms filled with flammable items. [[Firefoam popper]]s are ideal for protecting against fire. These incendiary shells that can also be looted once the siege is repelled - while crafting them typically isn't worthwhile, these shells are free and sometimes suboptimality can be outweighed by volume of fire.

=== Storage ===
As with all explosive items, these should be stored in separate storage containers. For maximum protection, put each stack of shells in a separate 1x1 stone box to prevent chain reactions. Pawns currently in a tantrum should be stopped at all costs, whether it be by arresting, creating another stockpile zone with a higher priority than the shell zone and prioritizing hauling the shells, or simply by shooting the pawn.

== Gallery ==
<gallery>
Shell incendiary a.png|One incendary shell
Shell incendiary b.png|Partial stack
Shell incendiary c.png|Full stack
</gallery>

== Version history ==
* [[Version/0.18.1722|0.18.1722]] - Added to replace mortar type system.
* 1.1 - crafting cost was increased (15 --> 20 steel and chemfuel cost).
* [[Version/1.3.3066|1.3.3066]] - Steel requirement decreased from 20 -> 10 unless Classic Mortar difficulty option selected.

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[[Category: Mortar shells]]