Fallacies of Doom - Devoxx BE 17

https://cfp.devoxx.be/2017/talk/NJF-9397/Fallacies_of_Doom_-_Lessons_learned_from_porting_Doom_3_to_Java

Transcript

1. @blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx Fallacies of Doom Lessons learned from porting Doom 3 to Java
2. @blackbeard0x14e #Devoxx Boring intro: history • id Software: Unusual company creating ‘innovative’ games(Keen, Wolf3D, Doom, Quake) • Self taught era, efficient coding style(s) • Nerd rage anecdote • Djoom3? • Why the boring awesome intro?
3. @blackbeard0x14e #Devoxx
4. @blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx wishlist
5. @blackbeard0x14e #Devoxx
6. @blackbeard0x14e #Devoxx Immutability; const vs final [1] ftp://ftp.idsoftware.com/idstuff/doom3/source/CodeStyleConventions.doc
7. @blackbeard0x14e #Devoxx Immutability; const vs final • final for variables sucks • final for functions sucks less • final for classes rocks
8. @blackbeard0x14e #Devoxx Unsigned primitives Runtime or compile-time error??
9. @blackbeard0x14e #Devoxx Unsigned primitives Microbenchmark alert:
10. @blackbeard0x14e #Devoxx
11. @blackbeard0x14e #Devoxx Operator overloading c.J1.oMultiply(c.body1.acceleration).oPlus(c.J2.oMultiply(c.body2.acceleration)).oPlus( (c.c1.oPlus(c.c2)).oMultiply(invStep)); c.J1.__(c.body1.acceleration).__(c.J2.__(c.body2.acceleration)).__((c.c1.__(c.c2)).__(i nvStep));//thanks sjmaple c->J1 * c->body1->acceleration + c->J2 * c->body2->acceleration + invStep * (c->c1 + c->c2); [2] https://www.cs.virginia.edu/~evans/cs655/readings/steele.pdf
12. @blackbeard0x14e #Devoxx Operator overloading idMat3 a, b, c, z; z = a + b * c; z = a.oPlus(b).oMultiply(c); z = b.oMultiply(c).oPlus(a);//technically correct z = a.oPlus(b.oMultiply(c));//compiler correct
13. @blackbeard0x14e #Devoxx sizeof( )
14. @blackbeard0x14e #Devoxx Destructor • Deconstructors • Finalize(deprecated?) • Autocloseable
15. @blackbeard0x14e #Devoxx Destructor • Deconstructors • Finalize(deprecated?) • Autocloseable
16. @blackbeard0x14e #Devoxx Enum
17. @blackbeard0x14e #Devoxx Grandfather inheritance • Super.super.function • Why are equals/hashcode inherited?
18. @blackbeard0x14e #Devoxx
19. @blackbeard0x14e #Devoxx Pointers
20. @blackbeard0x14e #Devoxx Pointers
21. @blackbeard0x14e #Devoxx Pointers
22. @blackbeard0x14e #Devoxx Pointers
23. @blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx (thank God we don’t have this…)-list
24. @blackbeard0x14e #Devoxx Death by Macros [3] https://blogs.msdn.microsoft.com/oldnewthing/20050106-00/?p=36783 [4] https://youtu.be/4cCeUfzH-No?t=23m
25. @blackbeard0x14e #Devoxx Death by Macros [3] https://blogs.msdn.microsoft.com/oldnewthing/20050106-00/?p=36783 [4] https://youtu.be/4cCeUfzH-No?t=23m
26. @blackbeard0x14e #Devoxx Death by Macros [3] https://blogs.msdn.microsoft.com/oldnewthing/20050106-00/?p=36783 [4] https://youtu.be/4cCeUfzH-No?t=23m
27. @blackbeard0x14e #Devoxx Hungarian Camels
28. @blackbeard0x14e #Devoxx Hungarian Camels [5]https://www.joelonsoftware.com/2005/05/11/making-wrong-code-look-wrong/ [6] https://steve-yegge.blogspot.nl/2006/03/execution-in-kingdom-of-nouns.html
29. @blackbeard0x14e #Devoxx Hungarian Camels
30. @blackbeard0x14e #Devoxx Unholy union
31. @blackbeard0x14e #Devoxx Unholy union
32. @blackbeard0x14e #Devoxx Unholy union
33. @blackbeard0x14e #Devoxx Unholy union
34. @blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx nice to have -list
35. @blackbeard0x14e #Devoxx Default arguments
36. @blackbeard0x14e #Devoxx Inlining
37. @blackbeard0x14e #Devoxx string::insert, string::swap
38. @blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx weird(wish)-list
39. @blackbeard0x14e #Devoxx The memory watcher
40. @blackbeard0x14e #Devoxx Pop goes the callstack
41. @blackbeard0x14e #Devoxx 5.1.2. Widening Primitive Conversion
42. @blackbeard0x14e #Devoxx Floating point operator precedence
43. @blackbeard0x14e #Devoxx Conditional breakpoints •Sloooow(interpretive) Microbenchmark alert:
44. @blackbeard0x14e #Devoxx A backwards compatible story?
45. @blackbeard0x14e #Devoxx A backwards compatible story? •Why is backwards compatibility the default mode of operation? •Why not make it optional with compile/runtime warnings/errors?
46. @blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx Questions?
47. @blackbeard0x14e #Devoxx @blackbeard0x14e #Devoxx https://github.com/blackbeard334/djoom3 @blackbeard0x14e