cinera_handmade.network/cmuratori/hero/code/code042.hmml

[video output=day042 member=cmuratori stream_platform=twitch stream_username=handmade_hero project=code title="Basic 2D Vectors" vod_platform=youtube id=eE-D_wSUd0g annotator=abnercoimbre annotator=schme annotator=theinternetftw]
[00:00][Intro]
[00:22][Character movement code.]
[01:45][Recap]
[2:50][Issues with current character movement code.]
[4:25][What we want to do with the movement code.]
[4:53][What makes a game engaging.]
[6:30][Reason for vector math.]
[7:00][What to start fixing.]
[7:35][Vector math intro.]
[11:36][Sketches]
[19:06][A scalar problem for the viewer.]
[24:53][Correcting player's diagonal motion.]
[26:10][Transitioning to vectors.]
[30:30][Vector notation]
[33:13][Basic Vector Operations]
[37:46][Multiplication in Vector Space]
[43:30][Adding vector routines to the code]
[48:25][Replacing scalar code with vector code.]
[1:01:53][Q&A][:speech]
[1:02:28][How do union types work in C++ and what are the drawbacks?]
[1:04:42][About vector conventions]
[1:05:07][In the first version of vector, weren't you just missing an anonymous struct in the union?]
[1:07:23][How do you remember all these commands?]
[1:08:47][Is there a performance reason not to use constructors for v2?]
[1:10:16][When would the fact that objects members are private or public come in to play?]
[1:12:04][You should be able to have compound assignments outside the object.]
[1:14:02][If you're using vertical bars for vectors, how would you notate the determinant?]
[1:15:23][Can't you make the whole vector struct an union?]
[1:16:30][Does the altered v2 work now if you comment out the constructor?]
[1:18:09][What libs are you using?]
[1:18:17][Just tested the v2 struct in llvm and it compiles fine.]
[1:18:40][If I remember correctly, both gcc and llvm complains about the union struct]
[1:19:33][Do you have any book recommandations for vector math?]
[1:22:14][Will you define vector and scalar addition?]
[1:25:15][Any particular reason to not supporting both vector-scalar and scalar-vector operators?]
[1:26:19][The earlier struct-syntax is C99]
[1:26:37][Does not returning real32 instead of v2 in *= operator trim your y-value?]
[1:28:25][In C++11 you can do (v2){5, 2} as v2{5, 3}]
[1:29:43][Don't you need some graphics library to place stuff not in a console?]
[1:31:20][It's time to upgrade your copyright notice!]
[1:32:19][Do you have use for constants like v2up, v2down etc?]
[1:33:50][Copyright should cover all years in which content was contributed]
[1:34:48][How about adding const references to function parameters to avoid copy by value]
[1:35:53][Doesn't const help the compiler optimize?]
[/video]