dyn4j Forum

Hi William, thanks for your quick response. I've checked my previous game's code and you are right, the contact was disabled setting a flag on the Contact object, not returning false. I think using the returned boolean to get the same behaviour as disabling the contact in Box2D would be a good idea,...

I noticed this behaviour some time ago, and I've since used a workaround for what I wanted to do. If I remember right, in Box2d, even if your returned false for beginCollision, it wouldn't trigger the same event unless the bodies separated and started colliding again. But in Dyn4j if you return fals...

I can confirm after all this testing that it doesn't happen with SAT.

I'm finishing the first release version, I can help with trying to find the GJK bug cause after I publish it and have more free time.

I want to report that until now it hasn't got stuck once while using SAT. Will keep testing given its randomness, but more time has passed than between previous stuck events.

That could be a solution, but I forgot to say I need the platform to be dynamic, affected by forces. For now, I've solved it by making the welded bodies LINEAR_FIXED and setting their linear velocities to the linear velocity of the points they are fixed to (correcting it's position over time). I don...

Will try to do what you asked and answer your questions as soon as it gets stuck again (if it does, because I changed to SAT, and even if it does it may take a time, as it's totally random). By the way, is there a performance lose by using SAT instead of GJK? About the first question, last time was ...

If I recall correctly no one managed to replicate your results? I think this indicates something in your setup, either some world settings, which isn't likely, or more likely you have some fixture/convex that is special somehow. Just tossing ideas here but maybe some degenerate convex, like 0 area ...

Hi again. One year ago I made a post (http://forum.dyn4j.org/viewtopic.php?f=3&t=312) about the engine getting randomly stuck at world.step, because of that problem I had to switch to libgdx-box2d. Now, I'm making a new game, and I decided to use dyn4j because I really like it, among other advan...

Hi, I'm developing a top-down game where player can stand above moving platforms. I've found solutions for this, either by recording an stand anchor relative to the platform and setting the position of the player to it on every step, or using a PinJoint (tried with RopeJoint but didn't go well). The...

Thanks to both of you for your answers. I'll start developing the game using dyn4j, and will report back when I have a working product to make you know how it went. Dividing the game world if many physic worlds is a good idea, I'll just have to trick players into thinking they are "traveling&qu...