Editing Autocannon turret

{{infobox main|security|
| name = Autocannon turret
| image = Autocannon.png|Autocannon turret
| description = A heavy automatic turret. Its large-caliber shells do heavy damage over significant ranges, but its barrel must be refurbished after use. It cannot fire at close-up targets, and may explode when damaged.
| type = Building
| type2 = Security
| placeable = true
| path cost = 50
| passability = pass through only
| cover = 0.5
| minifiable = false
| size = 2 ˣ 2
| flammability = 0.7
| hp = 380
| beauty = -20
| power = -150
| terrain affordance = heavy
| research = autocannon turret
| skill 1 = Construction
| skill 1 level = 6
| work to make = 15000
| resource 1 = Steel
| resource 1 amount = 350
| resource 2 = Plasteel
| resource 2 amount = 40
| resource 3 = Component
| resource 3 amount = 6
| damage = 27
| armorPenetration = 40
| range = 32.9
| minrange = 8.9
| accuracyTouch = 28
| accuracyShort = 72
| accuracyMedium = 66
| accuracyLong = 50
| accuracyAvg = 54
| mode = Burst
| burst = 3
| burstTicks = 17
| cooldown = 210
| velocity = 88
| stoppingPower = 0.5
| DPS = DPS
}}
The '''autocannon turret''' is a defense structure that fires a burst of medium-damage shells. 

== Acquisition ==
Autocannon turrets can be constructed 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}}.

== Summary ==
{{Image wanted|section=1|reason=Concise, small infographic of the cover bug}}
The autocannon turret uses the [[autocannon]] weapon. In addition to the weapon's accuracy, the turret itself has a per-tile [[shooting accuracy]] of 96% or equivalent to a [[Shooting]] skill of 8. It has a maximum range of {{P|Range}} tiles, but is unable to hit enemies within an {{P|Minimum Range}} tile radius. These ranges are centered on the lower left tile of the turret, regardless of orientation.  Despite its damage, the autocannon's stopping power is almost non-existent, not even being able to stagger [[human]]s - the same is also true for the [[uranium slug turret]]. 

After firing 90 rounds, it needs to be reloaded with {{Icon Small|Steel||180}} [[steel]] by a hauler. This can be adjusted in the [[storyteller settings]], but all default [[difficulty]] settings do not alter this.

Since autocannons are large 2x2 structures, ranged attacks are twice as accurate against them. 

As of [[Version/1.4.3580|version 1.4.3580]], autocannon turrets do benefit from [[cover]] but only if the lower left corner of the turret is covered from the shooter as confirmed by [[:File:Big_turrets_partially_benefit_from_cover.jpg|empirical testing]]. In practice this means that the turret can '''only''' be in cover if engaged from the south-east, as pawns will target the nearest tile of the turret and cover only applies if it is directly adjacent to the targeted tile. 

Like all turrets, they are temporarily disabled by sources of [[EMP]], with downtime scaling to the EMP damage dealt. Unlike mechanoids, turrets do not adapt to EMP and thus can be continuously restunned.

[[File:Turret_range_comparison.png|900px|thumb|center|Visualization of effective turret range of all three turrets, from uranium slug turret (top), to autocannon turret (middle), to mini-turret (bottom). <br>
Green is '''80 - 100% of peak accuracy''', blue is '''50 - 80% of peak accuracy''', red is '''below 50% of peak accuracy''' and grey is '''outside range'''. Gold tiles are spaced every 5 tiles. Values from 1.0.]]

=== Explosion ===
Autocannon turrets have a 50% chance to explode when damaged below 20% health. The exploding turret will spark and emit a hissing sound for {{ticks|240}} before exploding, dealing 50 [[Damage Types#Bomb|Bomb damage]] in a 5.9 tile radius centered around the lower left tile of the turret. Bomb damage is multiplied 8x against [[wall]]s, 4x against other impassable structures and plants, and 2x against passable buildings. All nearby raiders will attempt to move out of the blast radius before detonation.

[[File:Large turret explosion radius.png|thumb|center|Radius of autocannon turret explosion. Note the slight offset from the 'true' center of the turret.]]

== Analysis ==
{{Stub|section=1|reason=Exploiting/avoiding the cover bug in killbox/defense design}}
In general, turrets are not very strong for their price. Outside of the easier [[difficulties]], you shouldn't expect turrets to defeat raids on their own. They are best used when to support colonists, rather than replace colonists.

Autocannons are a general purpose turret. They can be useful in [[killbox]]es, where turrets can be massed together. However, they are quite costly. In an open field, the autocannon's low accuracy makes it less viable. 

If you want automated firepower, autocannon turrets are usually your best bet. Other turrets have their niches beyond firepower, however.
* [[Mini-turret]]s offer less firepower at most ranges. 4 mini-turrets output less {{DPS}} than 1 autocannon, beyond 12 tiles of range. The advantage of mini-turrets is that they are effective distractions. They are cheap and disposable, meaning they are great for taking attacks from enemies. Mini-turrets also have the benefit of being harder to hit.
* [[Uranium slug turret]]s are not strict upgrades. The autocannon actually outdamages the uranium slug turret until 25 tiles of range (before {{AP}}). Even then, since the uranium slug turret has a tendency to overkill, they are almost always worse against human targets. The uranium slug turret's advantages are the massive range and massive {{AP}}. They are highly effective against [[centipede]]s and other armored targets.

== Graphs ==
{| class="wikitable"
|-
! {{Hover title|link=no|dotted=yes|DPS taking into account both weapon accuracy and pawn/turret accuracy|True DPS}} over Range
|-
| {{Weapon Iterated DPS Chart|Autocannon|Normal|0.96}}
|}

== Version history ==
* [[Version/0.19.2009|0.19.2009]] - Added.
* 1.1 - Its damage and armor penetration was halved (40 -> 20, 60% -> 30%), and the reload cost was increased (120 -> 180 baseline).
* [[Version/1.1.2618|1.1.2618]] - Damage and armor penetration was increased (20 -> 25, 30% -> 37.5%).
* [[Version/1.3.3200|1.3.3200]] - Damage increased from 25 to 27. Accuracy increased: touch 0.25 -> 0.28, short 0.65 -> 0.72, medium 0.6 -> 0.66, long 0.45 -> 0.5. Turret ammo cost is no longer factored by difficulty.
* Between [[Version/1.3.3117|1.3.3117]] and 1.4.3580 - Turrets now benefit from [[cover]]. Despite displaying in the mouse-over box as such, empirical testing demonstrated that turrets did not benefit at all. However, a new issue was introduced. See above.

{{nav|security|wide}}
[[Category:Security]] [[Category:Turret]]