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Artillery turret

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Artillery turret.png
Artillery turret

Combat

Artillery turret entity.png

Recipe

Time icon.png
40
+
Advanced circuit.png
20
+
Concrete.png
60
+
Iron gear wheel.png
40
+
Steel plate.png
60
Artillery turret.png
1

Total raw

Time icon.png
250
+
Concrete.png
60
+
Copper plate.png
100
+
Iron plate.png
120
+
Plastic bar.png
40
+
Steel plate.png
60

Recipe

Time icon.png
40
+
Advanced circuit.png
20
+
Concrete.png
60
+
Iron gear wheel.png
40
+
Steel plate.png
60
Artillery turret.png
1

Total raw

Time icon.png
340
+
Concrete.png
60
+
Copper plate.png
280
+
Iron plate.png
240
+
Plastic bar.png
80
+
Steel plate.png
60

Health

2000

Stack size

10

Range

Minimum: 32
Automatic: 224
Manual: 560

Shooting speed

0.3/s

Ammunition

Artillery shell.png

Dimensions

3x3

Internal name

artillery-turret

Prototype type

artillery-turret

Required technologies

Artillery (research).png

Boosting technologies

Artillery shell range (research).png
Artillery shell shooting speed (research).png

Produced by

Hand icon.png
Assembling machine 2.png
Assembling machine 3.png

The artillery turret is a super-long-range static defense structure added in game version 0.16. It fires artillery shells, relatively slow-moving projectiles that explore chunks of terrain they travel across. The turret has both automatic and manual (even longer-ranged) firing modes. Projectiles have sufficient damage to destroy spawners and any type of worm with a single hit, and have a modest area of effect. Infinitely-stacking research upgrades are available for range and firing speed, but not damage.

The artillery wagon is essentially the same weapon, only mounted on a train car and therefore mobile.

Mechanics

Artillery turrets have a massive range, outranging other fixed fortifications by a factor of 10 or more. There are no special limits on how many may be built or where and, being ammunition-based, these turrets do not require electric power to operate.

In automatic mode, they function much the same as other turrets, automatically scanning for valid targets within range and firing on them. Automatic mode can only target enemy structures (spawners and worms), not mobile units (biters and spitters); shells do, however, damage mobile units in the vicinity of impact normally.

In manual mode, a special item is used to point-and-click anywhere in the world, map, or zoomed-in map; each click corresponds to one shell delivered to that location, so long as any working artillery turrets and / or wagons are in range. Targeting remotes show the number of fire-ready (loaded and, for wagons, stationary) artillery pieces in range of cursor position when held. Manual fire can be ordered on unexplored areas; shells will explore all chunks they travel across (but no surrounding chunks).

Range in automatic mode is 224 tiles (7 chunks); in manual mode, 560 tiles (17.5 chunks). Infinite research is available to increase range, at +30% of base range per level, applied to both automatic and manual range.

Limitations

Aside from the considerable expense of research and assembly for both turrets and shells, there are certain considerations that make a base defense based purely on these turrets unwise, despite their phenomenal range.

Artillery shelling will antagonize enemy mobile units in the vicinity of the impact into rushing the turret emplacement, regardless of their normal "aggro radius". Artillery turrets are relatively slow-firing, although infinite research is available to improve firing speed, at +100% per level, affecting both stationary turrets and wagons and applying to both automatic and manual mode. They also cannot target mobile units in automatic mode. Importantly, artillery has a minimum range as well, which is 32 tiles.

Together, these limitations mean that an artillery turret needs to be defended by other means. Any conventional approach such as walls, gun, laser, and / or flamethrower turrets, or the personal intervention of the player will do. However, players should keep in mind that extensive shelling of large biter-infested areas will produce massive attack waves centered on the position of the artillery piece at time of firing, and should plan close-range defenses accordingly.

Logistic considerations are also important, as artillery shells have a stack size of 1, meaning any-size container can only hold a modest supply and an inserter will only ever move a single shell at a time. Players may wish to consider on-site assembly for permanent and semi-permanent emplacements. The turret itself can hold 15 shells, and the wagon version can hold a full 100, providing a buffer of some size in the event supply is interrupted.

History

See also