A 长矛机关 is a type of 机关 found in the 丛林神庙. They are placed on the ceiling and thrust down long spears, dealing around 130 damage per hit. They are quite common. A Spear Trap can fire at a rate of once every 1.5 seconds () or once every 2 seconds ()
- If two spears hit the same player or creature at the same time, the victim only takes damage once, due to the immunity time of the first spear.
- Damage is doubled against players.
- The Spear Trap has a maximum range of 21 blocks.
- Rarely, Spear Traps will spawn outside the temple and can be harvested . They work well against the goblin army or in some cases the pirate invasion or blood moon.
- They are good for Battle arenas.
- When Actuated, these can be used as a very efficient way to kill off bosses, or clear waves in events like 南瓜月 and 霜月, easily.
- In single-player, Spear Traps inflict the 霜冻-debuff if the player wears 寒霜盔甲.
- Sprite updated.
- Can now be hammered to rotate 90 degrees at a time.
- 188.8.131.52：Fixed bug where traps could critically hit.
- 1.2.3：No longer shoots the retracting spear head upwards like a projectile if the trap is in inactive state (by the means of an 制动器).
- 184.108.40.206：Fixed a graphical bug with Spear Traps.