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An imp about to call A_TroopAttack to launch a fireball.

A_TroopAttack is a code pointer used in the attack animation for the Imp.

A_TroopAttack is used for both of the Imp's methods of attack. If the imp is within melee range of its target, it does a random amount of damage to its target and plays the sound effect DSCLAW. Otherwise, it launches a fireball (object of type MT_TROOPSHOT) towards its target. If the monster has no target, nothing happens.

The naming of this code pointer is a somewhat confusing artifact of Doom's development process where the Imp was initially called a "troop" before the addition of the Zombieman (aka Trooper). A similar situation exists with A_SargAttack.


The A_TroopAttack code pointer appears in the following states in Doom's state table:


The following is an example of how to set the A_TroopAttack code pointer in a Dehacked file:

Pointer 21 (Frame 34)
Codep Frame = 454

Or using BEX syntax:

Frame 1234 = TroopAttack

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