Active Stone Block

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Active/Inactive Stone Block
Stack digit 9.pngStack digit 9.pngStack digit 9.png
Active Stone Block.png Inactive Stone Block.png
Type BlockMechanism
Placeable Yes
Dimensions 1 wide ˣ 1 high
Use time 14 (Very Fast)
Rarity Rarity Level: 0
Sell 2 Silver Coin
Internal Item ID: 511-512
Internal Tile ID: 130-131

Active Stone Blocks and Inactive Stone Blocks are blocks that act as mechanisms, such that when they are wired, their presence can be switched on or off.

When triggered, an Active Stone Block becomes an Inactive Stone Block, and vice-versa. Wires must pass through all Active/Inactive blocks that are to be triggered, and the wires must connect to a trigger, such as a Pressure Plate, Switch, or Timer. These blocks are useful for creating traps, floodgates, hidden passages, drawbridges (eg. over water, lava, or empty space), skybridges, and much more.

  • While in their Active state, these blocks look and behave as ordinary Stone Blocks, inhibiting movement, allowing entities to stand or walk on them, blocking light, and containing liquids.
  • When in their Inactive state, they are still visible, but look and behave instead as background Stone Wall tiles. They are essentially empty space, allowing the passage of players, items, liquids, light, etc.

Both the Active and Inactive phases can be crafted. Players will usually want to craft the Active version, as the Inactive blocks cannot be placed next to each other without the support of other adjacent foreground blocks. Active blocks do not have this shortcoming, and switching them to Inactive afterwards using wires will still provide the same outcome.

Placing Active Stone Blocks, switching them to Inactive with wiring, then mining them and picking them up again, will cause you to pick up Inactive blocks, and vice-versa.

Active/Inactive Stone Blocks occur naturally in Boulder traps found in the Cavern layer, where Active blocks that are wired to Pressure Plates suspend a Boulder in the ceiling. An enemy or player walking on the Plate cause the Active blocks to turn Inactive, allowing the Boulder to fall through and damage whomever is below.

Crafting[edit | edit source]

Recipe[edit | edit source]

Crafting Station
By Hand
Ingredient(s) Amount
Stone Block.png Stone Block 1
Wire.png Wire 1
Active Stone Block.png Active Stone Block 1
Crafting Station
By Hand
Ingredient(s) Amount
Stone Wall.png Stone Wall 4
Wire.png Wire 1
Inactive Stone Block.png Inactive Stone Block 1

Notes[edit | edit source]

  • This behavior can be generalized to all blocks via actuator. For example, you could have a very dense (and expensive) Mushroom farm with many layers of Active Grass one tile apart, so that all the mushrooms would fall when the Grass becomes Inactive.
  • Furniture placed on Active blocks that are turned Inactive will be freed and fall as dropped items. Blocks placed adjacent to them will remain in midair, the same as if the other blocks had been mined away.
  • When in a Hardmode biome, it can be easy to spot these naturally generated Active Stone Blocks if the surrounding blocks have been either corrupted or hallowed.
  • Inactive blocks will be freed by explosions.

Tips[edit | edit source]

  • Even without a mechanic (required to obtain wiring tools), this item still has use if harvested from naturally-occurring Boulder traps underground. You can select this item in your toolbar to see a layout of all wires on screen, which is useful for detecting and avoiding natural traps.
  • A vertical strip of three Active Stone Blocks wired to a nearby Switch or Lever serves as a good alternative to Doors that only players can open. NPCs won't be able to use them to stray outside, and no enemy can ever open them. Note that this will not fulfill a House's entrance requirement, so at least one actual Door will still be required in order for an NPC to move in (though the Door need not lead "outside", and can merely open into another room of a larger structure). Using Blue Pressure Plates on either side causes the 'door' to turn inactive for a moment, then return to active the very instant the player reaches the other side. As Blue Pressure Plates are only triggered by players, this can also keep zombies and such out during a Blood Moon.
  • To conserve storage space, consider switching all Inactive Stone Blocks to Active Stone Blocks, or vice versa. This can easily save an inventory or storage slot by combining the stacks.

See Also[edit | edit source]

History[edit | edit source]

  • Active stone blocks can now be painted with paint sold by the painter.
  • 1.2: Stack limit increased from 250 to 999.
  • 1.1: Introduced.
Tools Wire • Wrenches • Wire Cutter • Desktop Version Multicolor Wrench • Desktop Version The Grand Design • Desktop Version Actuation Rod
Accessories Desktop Version Mechanical Lens • Desktop Version Presserator
Triggers Lever • Switch • Pressure Plates • Timers • Desktop Version Detonators • Desktop Version Trapped Chests • Desktop Version Gem Locks
Devices Active/Inactive Stone Block • Actuator • Desktop Version Announcement Box • Pumps • Teleporter • Functional Statues • Light sources • Desktop VersionConsole VersionMobile only.pngGemspark Blocks
Traps Dart • Super Dart • Spear • Spiky Ball • Flame • Explosives • Desktop Version Geyser
Tiles: Stone Block.png Blocks ( Red Brick.png Bricks) • Wood Wall.png Walls ( Cobalt Brick Wall.png Brick Walls)