16,845 reputation
23469
bio website sam.zoy.org
location Paris, France
age 36
visits member for 3 years, 8 months
seen 20 hours ago

I live in Paris, France.

I work on video games (computers and consoles) for a living. I write free software and all kind of crazy shit for fun. My interests: image processing, video coding, rendering, game development, maths, physics, compression, cryptography.


Oct
30
revised Why is Euler integration sometimes preferred over RK4 even if RK4 is more accurate?
edited title
Oct
28
awarded  Nice Answer
Oct
26
comment Hexagon collision detection for fast moving objects?
@LuisAlves yes and no… all the logic works, but you’ll have to replace vB-vA with g(t)-f(t) where f and g are A and B’s positions over time. Since this is no longer a straight line, you’ll have to solve a box — parametric curve intersection problem.
Oct
25
comment How do I calculate distance from a point to a rectangle?
@BitNinja yes, that’s what the question assumes. If it’s not axis-aligned, the fastest/simplest algorithm will depend on how the rectangle information is stored.
Oct
21
comment Should I have multiple small textures or a single big one?
Maybe try both and measure the performances?
Oct
16
awarded  Nice Answer
Oct
15
answered List of 3 letter English words to disallow from entry for public kids game
Oct
9
comment C++ Visual Studio Sprite Animation Function only setting values for certain Rect structs in SDL
You seem to be loading the file into playerTextureRight but call setClips with argument playerSpriteSheet. Did you check your variables?
Sep
30
awarded  Explainer
Sep
15
revised Unity3D - How to tessellate 2D sprites?
typo
Sep
13
comment glm direction vector rotation
The length of the cross product of two unit vectors is the sin() of the angle they form, so it will be a unit vector only if the two vectors are orthogonal. In general you need to ensure your quaternions are normalised, but in the case of angleAxis() the function takes care of it.
Sep
12
answered 2 component unit vector
Sep
10
answered glm direction vector rotation
Aug
9
answered How do I get rid of this coloured border on my sprite?
Aug
5
awarded  Revival
Aug
4
answered Integration error in high velocity
Jul
24
revised Changing the color of some fragment of a texture using shaders
shorter code
Jul
16
comment Is it legal to allow users to install replacement game data containing real-world personalities?
This seems relevant: even former dictators could sue you if they aren’t pleased with how you depict them
Jul
4
comment match 3 Shuffling
@Lucas Have you actually calculated or maybe measured the “anomaly”? Even in an extremely pessimistic setting (a 9×9 board with only 4 different candy colours), this algorithm requires 3 iterations in average. The odds that more than 100 iterations are needed are less than 1:500,000. The odds that more than 1000 are needed are 1 in 7 million, the odds that more than 10000 are needed are 1 in 100 million (which happens for very degenerate and unbalanced board settings). The average computer does those 10000 iterations in about 10 milliseconds.
Jul
1
revised How can I determine the extreme color values in a texture?
add an explanation picture