Piston: Difference between revisions

[[Image:Piston.jpg|thumb|right|A closed Piston.]]

A '''piston''' is a [[Forerunner]] device. They are installed within facilities like the [[Sentinel Wall]] as vertical "[[Door|doors]]" to get from level to level within the multi-tiered construct. The pistons have sensitive control-strips that open the piston when fired upon or switched. The piston then splits in two, and allows the [[Sentinels]] and [[Constructors]] to move to the lower or to the higher level they desire. The openings are fairly large, however, and therefore allow larger creatures, such as [[Sangheili|Elites]], to move through. However, the shafts pistons guard are almost always vertical, so moving up through them is impossible without a thruster of some kind. Some Pistons do not split in two, but the ones that reveal the winding tunnels just lift upwards, downwards and away.<ref>''[[Halo 2]] level [[Sacred Icon (Level)|Sacred Icon]]''</ref>

*An alternative for activating the pistons besides simply pressing ''X'' is meleeing or shooting the pistons. On [[Heroic]] or [[Legendary]], pistons cannot be triggered, but must' be shot or meleed.

*Pistons are only present in the level [[Sacred Icon (Level)|Sacred Icon]] in ''[[Halo 2]]''.

*In ''[[Halo 3: ODST]]'', in the level [[Data Hive (Level)|Data Hive]] which is set in [[New Mombasa]]'s [[New Mombasa Data Center|Data Center]], devices called "Data Stacks" are encountered. They function similarly to the pistons.