IED antigrain warhead trap

The IED antigrain warhead trap is Security building that explodes when stepped on, detonating in a massive explosion powerful enough to instantly kill all enemies in-game except for the Thrumbo, Centipede, and shield belt-wearing enemies.

Acquisition

IED antigrain warhead traps can be constructed once the Ieds project has been researched. Each trap requires 1 Antigrain warhead, 1,400 ticks (23.33 secs) of work and a Construction skill of 3.

Summary

IEDs are single use traps that may be triggered when a pawn of any kind walks over it. The base trigger chance is 100% for enemies, including manhunter animals. Non-manhunting wild animals have a 25% chance to trigger the trap but are aware of the location of traps and will avoid pathing over them if reasonably possible. Colonists, friends, and tame animals have 0.4% (one in 250) to trigger the IED, but are also aware of the location of traps and will avoid pathing over them if reasonably possible. In all instances, the nimble trait multiplies the trigger chance for that pawn by 10%, that is, a 10% chance for enemies and 0.04% chance for friendly pawns.

When triggered, the IED will spark and emit a hissing sound shortly before exploding a 15 ticks (0.25 secs) later, dealing "Bomb Super" damage in a 15 tile radius of itself, dealing 550 damage at the center and 110 damage at the extreme edge of the radius and linearly interpolated in between, and setting fires to roughly 22% of the affected tiles. Nearby non-drafted pawns, colonist and NPC alike, will attempt to clear the blast radius once the spark starts however the short wick time and large radius make success unlikely.

Additionally, when damaged to below 20% of the maximum HP or^{[Fact Check]} when hit be a projectile dealing the Bullet, Arrow, or ArrowHighVelocity damage type, the same triggering process will begin.

Analysis

Radius of where buildings will wake mechs is highlighted in red.

Regular antigrain warheads have a radius of 14.9 tiles - as a mortar has a base miss radius of 9 tiles, a launched warhead can hit the intended tile and every tile within a 5-tile radius with the force stronger than a doomsday rocket launcher at 100% certainty. This makes antigrain traps more niche than regular IED traps.

Antigrain traps do have an advantage, namely that they can be placed at a precise location. Useful against crashed ship parts and mech clusters without obtrusive proximity activators, which will let you place down a trap nearby. Plus, bulkier mechs like centipedes can survive the edge of an antigrain blast. The trap is more precise, so it will likely deal more damage than the mortar shell.

Finally, the antigrain shell must actually be fired from a mortar, forcing players to lead their shots. You don't have to lead any shots with the trap, making it more accurate. Note that industrial factions will often have raiders using go-juice, who will run ahead of the group and trigger the trap early. Especially relevant if the AI storytellers#Classic Mortars storyteller setting is turned on, as the mortar miss radius is increased to 12 tiles.

Version history

1.1.0 - IEDs explode when bullets hit them. This allows the player to purposefully shoot them to set them off.
? - texture updated. Before 1.3.3159 and presumably sometime after 1.0.2096 to correspond with antigrain warhead texture change.

Original texture

Architect

Security: Barricade • Sandbags • Spike trap
(research): Autocannon turret • Foam turret • Mini-turret • Rocketswarm launcher • Uranium slug turret • Mortar
IEDs: IED trap • IED incendiary trap • IED EMP trap • IED firefoam trap • IED smoke trap • IED antigrain warhead trap • IED tox trap • IED deadlife trap
Related: Antigrain warhead • EMP shell • Firefoam shell • High-explosive shell • Incendiary shell • Smoke shell • Tox shell • Deadlife shell

IED antigrain warhead trap

Contents

Acquisition

Summary

Analysis

Version history

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