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Images, Screens & GamesGame Physics

Why Characters Fall Through Walls

Games check for collisions in snapshots, and fast things slip between them

In some games, a character runs at a wall and comes out the other side. How can a solid wall let anything through?

You'll find out

  • What a game checks, and how often
  • The speed where walls stop working
  • How games patch the gaps

Why it matters

Games, robot simulators and virtual crash tests all move in steps: knowing where the gaps hide keeps them honest.

About 3 min6 interactive slides · 5 questionsLesson 177 · Zone 20

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