AI Moving by Sebastian Rahn begins here.

"Optionally allows a chasing NPC to be added to the dimensional room defined by Room & Dimension."

• Section 1 - Chasing Phrases
• Section 1.1 - Simple Chase
• Section 1.2 - Advanced Chasing
• Section 1.3 - Complex Chasing
• Section 1.4 - Commanding a Chase
• Section 2 - Calculating Distance