raycast / raycast_query crash when length of raycast is 0

[8bitskull]

Noticed this when I was doing a raycast for a moving object. For some reason some of my frames had a dt of 0, meaning I would check the same starting and end position.

Assertion failed: r.LengthSquared() > 0.0f, file upload/daabbcc/include/DynamicTree/b2DynamicTree.h, line 209

[selimanac]

This is not an error. Raycast length must be bigger then 0.0f. And this assertion comes from Box2D lib. So you'll get this result on every un-modifield Box2D. Even Defold has this.
All I can do is to prevent crash by returning a warning if length i <= 0 , is this ok for you? Also you can check this on Lua too

[8bitskull]

That makes sense! Thanks for explaining.

I'm no expert on how to design this stuff, but it seems reasonable to return no hits and display a warning. Perhaps better than a full crash.

[selimanac]

Length check added