Sledgehammer Engine

Call of Duty: Advanced Warfare featured Sledgehammer Games' heavily modified in-house branch of the IW engine, with only a few lines of legacy code remaining. The majority of the engine in Advanced Warfare had been rewritten. Sledgehammer Games incorporated brand new animation, physics, rendering, lighting, motion capture and facial animation systems. The developers reworked the audio engine which had also been built from the ground up. According to Sledgehammer Games audio director Don Veca, the team was able to integrate an audio intelligence system to the game.