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|Session Name:||Massive Crowd on Assassin's Creed Unity: AI Recycling|
|Track / Format:||Programming|
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|Overview:||In this presentation, we will introduce a new technique of AI level of detail that has allowed us to create thousands of replicated, persistent, interactive NPCs for Assassin's Creed: Unity. We will go over how we created a pooling system that allowed us to swap from low-res NPCs to high-res NPCs without the player noticing. This talk will then explain how to create a simplistic AI brain to animate the thousands of NPCs. With the limit of 40 real AIs and 120 high resolution models, we could successfully create a scene where 10,000 crowd NPCs are on screen at the same time.|