Illager patrols should un-freeze when the player looks at them

Illager patrols freeze when they see a target so it looks like they're spying on them, which makes sense for both immersion and game balance. The problem is, they don't move until the target gets close, and it feels weird to have the enemies stare at you mindlessly while you build, like neither of you can see each other. I believe that, when the player looks toward them, they should be like, "Oh shoot we've been spotted!" and attack.