Autocannon turret

Autocannon turret

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.

Base Stats

Type

Building – Security

Market Value

1270  ^[Note]

Beauty

-20

HP

380

Flammability

70%

Path Cost

50

Building

Size

2 × 2

Minifiable

False

Placeable

True

Passability

pass through only

Cover Effectiveness

50%

Terrain Affordance

Heavy

Power

-150 W

Ranged Combat

Mode

Burst

Damage

27 dmg

Armor penetration

40%

Cooldown

210 ticks (3.5 secs)

Range

32.9 tile(s)

Minimum Range

8.9 tiles

Accuracy

28% - 72% - 66% - 50%

Avg. accuracy

54%

Velocity

88 (m/s)

Burst Count

3 (per burst)

Burst Ticks

17 ticks (0.28 secs)
(211.76 RPM)

DPS

19.92 (10.76)

Stopping power

0.5

Creation

Required Research

Autocannon turret

Skill Required

Construction 6

Work To Make

15,000 ticks (4.17 mins)

Resources to make

350 + 40 + 6

Deconstruct yield

175 + 20 + 3

Destroy yield

87 - 88 + 10 + 1 - 2

The autocannon turret is a defense structure that fires a burst of medium-damage shells.

Acquisition

Autocannon turrets can be constructed once the Autocannon turret research project has been completed. They require  350 Steel,  40 Plasteel,  6 Components, 15,000 ticks (4.17 mins) of work, and a Construction skill of 6.

Summary

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 32.9 tiles, but is unable to hit enemies within an 8.9 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 humans - the same is also true for the uranium slug turret.

After firing 90 rounds, it needs to be reloaded with  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. And as of version 1.3.3117, turrets don't benefit from cover. Despite displaying in the mouse-over box as such, empirical testing demonstrates that turrets do not benefit at all.

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.

Visualization of effective turret range of all three turrets, from uranium slug turret (top), to autocannon turret (middle), to mini-turret (bottom).
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 240 ticks (4 secs) before exploding, dealing 50 Bomb damage in a 5.9 tile radius centered around the lower left tile of the turret. Bomb damage is multiplied 8x against walls, 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.

Radius of autocannon turret explosion. Note the slight offset from the 'true' center of the turret.

Analysis

It can be useful in killboxes where it is more likely to hit, by bringing enemies closer together and putting them in range, but otherwise its use is not cost-effective in an open field as its low accuracy makes it unlikely to land shots at range, and it costs quite some steel for each shot.

Due to their damage output, autocannons can be effective at mowing down lancers when grouped, provided you can lure them within its effective range, otherwise the autocannons will have trouble hitting them. Autocannons are also somewhat effective at dishing out damage against large targets such as centipedes since the accuracy bonus from their body size significantly offsets the autocannon's lower accuracy, though centipede weapons can make relatively short work of autocannons too.

Graphs

True DPS over Range

Version history

• 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).
• 1.1.2618 - damage and armor penetration was increased (20 -> 25, 30% -> 37.5%).
• 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.

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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 • IED deadlife trap

Related

Antigrain warhead • EMP shell • Firefoam shell • High-explosive shell • Incendiary shell • Smoke shell • Tox shell • Deadlife shell