The armory is the structure where terran researchers and test groups work to develop improved materials for the weapons and armor used by terran vehicles and starships. It contains several cooling turbines in the center of its structure, as well as a secure entrance on its side. Within the Dominion Armed Forces, whenever a strike force is deployed planetside, the armory is one of two key research facilities to be established in a field base as soon as possible (the other being the engineering bay).
The armory is built around several round turbines. These keep the building within temperature specifications while researchers work inside.
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Along with all the other terran structures, the design of the armory was carried out by Trevor Jacobs. A smoke stack was added at the suggestion of Samwise Didier. During development, it was called the "chem lab."
Attack upgrades improve attack cooldown of affected units by 5% per level.
These self-replicating ultra capacitors reduce the reload time of weapons and systems. Now each of the weapon upgrades at the armory and engineering bay increases attack speed by 5% in addition to increasing damage.
Armor upgrades increase health of affected units by 5% per level.
We have created a new lightweight alloy called vanadium. Vanadium diffuses weapon impacts much more efficiently than traditional armor plating, and it better preserves the life of our units. Now each of the armor upgrades in the armory and engineering bay increases unit life by 5% in addition to increasing armor.
All structures repair themselves to 50% life. All structure fires are automatically put out.
This all-in-one safety system automatically dispatches robotic drones to put out any fires and perform basic repairs on damaged structures. Although these drones are effective at doing basic repairs, they do not have a strong enough AI to perform the more delicate repairs needed to restore a structure past half life.
The armory provides vehicle weapon and armor upgrades for some terran co-op commanders, namely Jim Raynor, Rory Swann, Nova Terra. Nova has no unique upgrades, being limited to normal weapon and armor upgrades. Raynor and Swann share a range upgrade, along with an additional unique upgrade available only to them. Additionally, Raynor and Nova unlock level 2 infantry upgrades at the engineering bay when an armory is available.
Mira Han and Matt Horner use the armory for weapon and armor upgrades for all of their units, biological and mechanical, instead of just vehicles. Conversely, Arcturus Mengsk does not have any weapon and armor upgrades, which are instead purchased at his engineering bays; Mengsk armories only contain unique vehicle upgrades for his Royal Guard.
During development of StarCraft II, it was not known at first what tech buildings would be used to upgrade the terran arsenal. For the sake of having placeholder artwork, a task was given to update the armory so the building could be used in the meantime while artists waited for a design decision. The update was a simple translation of the sprite artwork of the original game to 3D. The armory was never challenged, and after the art was complete it made it all the way into the final release of the game.