[Submission] Holographic Decoy

Also, I have a crazy idea for how this could work against AI:
*Make it a monster, and friendly.
*Make it periodically look for enemy monsters, and have it fire an invisible, soundless attack that doesn't trigger pain, but gets the monster's attention, so the monster may attack the decoy instead of the player.

The downside to this approach, if it works, is that the monster will presumably attack the decoy until it "dies", instead of possibly losing interest/figuring out the trick and resuming attack on the player. So here's a suggestion involving ACS:
*When the Decoy is spawned, assign it a TID (probably using UniqueTID , and assign that TID to a variable.
*Have the invisible attack give an inventory item to the monster, and have that item perform Thing_Hate on the monster, with the TID of the "hatee" being the variable that contains the TID of the Decoy. Limit the MaxAmount of the inventory item to 1.
*After a random amount of time, have the inventory item call A_ClearTarget on the monster so that it gives up attacking the Decoy and may resume attacking the player.
*Allow the inventory item to remain in the monster's possession until the lifespan of the Decoy has passed, so it can't receive another from the same Decoy, and doesn't try to attack the same Decoy again--then, remove the item from the monster so that it could potentially be fooled by a different Decoy.

No, I don't know exactly how to code this to work, but it seems like it's possible, so I figured I'd make the suggestion.

Oh, I thought about the "friendly monster + invisible&silent + nopain&blood shot" combo but I was afraid it could be a bit unreliable since sometimes the monters fail to become hostile if hit (or, if I remember correctly, thay won't retaliate against another enemy if you have already hurt them). However, with the inventory item thing, it can become more reliable, I'll try it when I'll have a few time, thanks for the suggestion!