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Killing the Walk Monster

Molly Rocket · talk · Watch on YouTube

Game programming & enginesSoftware performance & optimizationTesting, debugging & developer tools

What it is

Casey Muratori's remastered BICFest 2018 talk on how the collision system of The Witness was engineered to prevent whole classes of bugs found in game engines. It covers character movement and collision handling.

Why Hacker News recommends it

HN points to it as the explanation of how The Witness solved walking and collision.

  • 1 people recommended it
  • 1 different months
  • 0 strong recommendations
  • first 2021, last 2025

What HN commenters said

  1. “talking about the problem and how they solved it in The Witness”

    Developer explains how The Witness solved walking and collision

    db48x, 2021-09 · Recommendation · in “Why video game doors are so hard to get right [video]”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: collision detection, the witness, casey muratori, character movement, game engines

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