Dungeons, Dragons and Functions

on YouTube ↗59m

" summary

Implements D&D 5e rules in F#, spending about six months turning PHB/DMG/Monster Manual specs into code using discriminated unions and records to model stats, weapons and attacks, and a dice expression DSL with eval to roll complex expressions. Builds a Fable + Elmish web simulator that runs automated encounters and shows wolves beat goblins frequently; many rules are half truths (melee reach exceptions, multi-damage, optional features), effects and global buffs remain hardest, and reinforcement learning is the planned next step.

AI-written summary · about

" chapters (25)

1. 0:00Start
2. 5:13Player's Handbook (PHB)
3. 7:23Ogres, Goblins, & Company
4. 8:25Discriminated Union
5. 8:44Abilities
6. 9:21Pattern Matching
7. 10:08Modifiers
8. 10:28Function
9. 15:40Different structure: OR
10. 16:13Melee & Ranged
11. 16:57Attack: a sketch
12. 17:58Pattern Match to extract data
13. 18:57Modules
14. 19:17Chimerae
15. 22:16Goblin attacks
16. 22:29Wyvern attacks
17. 25:36The truth...
18. 28:13Questions to ask
19. 43:33Evaluation
20. 45:19What is a fair fight?
21. 45:36Estimating probability of survival
22. 46:16In practice
23. 46:39Modeling (4)
24. 53:42Alternatives
25. 54:57What's missing

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