Meet Freddy and the Gang

Learn about the AI levels and movement mechanics of Freddy, Bonnie, Chica, and Foxy in Five Nights at Freddy's 4. Understand how their AI affects their behavior and difficulty.

In the world of Freddy Fazbear's Pizza, you'll face four primary adversaries: Bonnie the Bunny, Chica the Chicken, Foxy the Pirate Fox, and Freddy himself. While each has unique personalities and attack methods, they share a core logic for movement within the restaurant.

Upon completing Night 6, a Custom Night unlocks where you can set each antagonist's AI level from 0 to 20, with higher levels increasing difficulty. These AI levels directly influence enemy movement.

Each enemy has a specific time interval for a "movement chance":

• Freddy: Every 3.02 seconds
• Chica: Every 4.98 seconds
• Bonnie: Every 4.97 seconds
• Foxy: Every 5.01 seconds

Essentially, Freddy gets a movement chance about every 3 seconds, while the others get theirs about every 5 seconds. These intervals, though subtle, add up over the night, making them harder to track.

A "movement chance" occurs when an enemy reaches its time interval. The game generates a random number between 1 and 20. If this number is equal to or greater than the enemy's AI level, the enemy moves. If the number is lower, the enemy stays put. Each AI level increase effectively adds a 5% chance of movement, from 0% at level 0 to 100% at level 20.

The standard nights use pre-set AI levels that are automatically applied:

*On Night 4, Freddy's AI level has a 50% chance of being either 1 or 2.

Enemy AI levels are not static throughout the night; they increase at specific times to ramp up the challenge:

• At 2 AM: Bonnie's AI increases by 1.
• At 3 AM: Bonnie, Chica, and Foxy's AI increase by 1.
• At 4 AM: Bonnie, Chica, and Foxy's AI increase by 1 again.

For example, Night 1 starts at 0-0-0-0, becomes 0-1-0-0 at 2 AM, then 0-2-1-1 at 3 AM, and finally 0-3-2-2 at 4 AM, where it remains for the rest of the night.

This forms the core logic for all enemy movement patterns, with individual character specifics detailed further.