Bastion: Difference between revisions

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=== Overlapping Fields ===
=== Overlapping Fields ===


[[File:Hjaltland Vault 09.24.17.png|thumb|[[Hjaltland]]'s vault as it stood in September 2017. Use of overlapping bastion fields makes advancing even a single ring difficult.]]
[[File:Hjaltland Vault 09.24.17.png|thumb|[[Hjaltland]]'s vault on [[CivClassic]]. The use of overlapping bastion fields makes it difficult to break through even a single ring.]]


While it is efficient to spread bastions out, defensive structures make use of overlapping bastion fields to ensure breaking a single bastion won't grant the breaker access to a full 21*21 area. In open spaces, blocks placed in the overlap would be a liability (since both bastions would take full damage) but vaults use walls and other physical barriers to prevent attackers from doing so. Immense subdivision and traps make ground assaults against such a structure difficult.
While it is efficient to spread bastions out, defensive structures make use of overlapping bastion fields to ensure breaking a single bastion won't grant the breaker access to a full 21*21 area. In open spaces, blocks placed in the overlap would be a liability (since both bastions would take full damage) but vaults use walls and other physical barriers to prevent attackers from doing so. Immense subdivision and traps make ground assaults against such a structure difficult.
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[[File:Skybunker Bastions.png|thumb|Only two layers protect this skybunker, but they provide a large and durable area of safety for defenders.]]
[[File:Skybunker Bastions.png|thumb|Only two layers protect this skybunker, but they provide a large and durable area of safety for defenders.]]


One other form of field overlap involves the vertical dimension. You can protect an area in the sky (typically at sky limit, but not always) by forcing attackers to break one bastion at a time. This is achieved by separating bastion layers by 8 blocks (to prevent mining) and moving each successive layer one block diagonally away from the center. Unless they can find a way to place bastions closer to the center (either on the outside of your structure or on top of it) they can only break a single bastion layer at a time.
One other form of field overlap involves the vertical dimension. You can protect an area in the sky (typically at sky limit, but not always) by forcing attackers to break one bastion at a time. This is achieved by separating bastion layers by 8 blocks (to prevent mining) and moving each successive layer one block diagonally away from the center. Unless they can find a way to place bastions closer to the center (either on the outside of your structure or on top of it) they can only break a single bastion layer at a time.


== Glitches ==
== Glitches ==