A Brain Dump of What I Worked on for Uncharted 4 (2016) (allenchou.net)

The developer behind Uncharted 4 has revealed key insights into the artificial intelligence systems that contributed to its gameplay mechanics, particularly for single-player buddies and multiplayer sidekicks. Notably, they discussed a "Post System" where NPCs navigate to discrete positions based on situational ratings like stealth or combat. The buddy follow system, inspired by The Last of Us, incorporates complex path clearance tests and a hysteresis mechanism to prevent oscillation between climbing and non-climbing states, enhancing realism in character movements. Significantly, the AI enhancements also introduced dynamic situational behaviors such as cover sharing, medic functionalities in multiplayer, and an investigation feature that prompts NPCs to respond to player actions or dead bodies. The design emphasizes natural interactions and smooth transitions, using techniques like staggered enemy movements and customizable dialog responses. Additionally, innovations for vehicle mechanics and death animations create a rich and immersive player experience. These advancements reflect the growing complexity in game AI, ultimately enriching narrative and gameplay immersion in the AI/ML community.