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Half-Life Physics Reference
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Half-Life Physics Reference
  • 1. Game basics
  • 2. Entities
  • 3. Player inputs
  • 4. Player movement basics
  • 5. Ducking and jumping
  • 6. Strafing
  • 7. Motion under gravity
  • 8. Surfing and wallstrafing
  • 9. Ladders
  • 10. Movement automation
  • 11. Health and damage
  • 12. Explosions
  • 13. Weapons
  • 14. Monsters
  • 15. Triggers
  • 16. Func entities
  • 17. Case studies
  • 18. Practical TASing
  • 19. Sister games
  • 20. Glossary
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Index

D | E | U | V

D

  • ducktapping

E

  • explosion origin
  • explosion radius

U

  • unit acceleration vector

V

  • viewangles
Copyright © 2014–2026, Jiangwei Chong
Made with Sphinx and @pradyunsg's Furo
Last updated on Jan 11, 2026
This work is licensed under CC BY-NC-ND 4.0