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In this session, Digital Confectioners will showcase a system they have developed that builds on the out-of-the-box systems Unreal Engine provides for tracing to provide a lag-redundant and highly performant melee hit-detection system for action games, where both collision accuracy and performance matter.

The talk will cover caching collision shapes/transform data from meshes and caching transform data from animations to build a system that can catch up on performing collision sweeps when lagging or hitching.

We’ll also look at the performance of the system including how to minimize the number of collision sweeps performed without losing accuracy; caching data upfront instead of re-fetching data; optimizing data for better CPU cache usage; and minimizing CPU cycles.