Just wanted to ask an additional question in reference to this topic. Is it possible to directly manipulate all Box2D settings using the SDK? Seems like this would be very convenient.

I'm working on a project and I've ran into an issue with an object colliding with walls in a zero gravity environment. The issue is that if the object collides with a wall going slowly enough, it will not bounce regardless of the elasticity of the wall and object.

I did a bit of research and found that this is related to a property in Box2D called b2_velocityThreshold. Basically what it does is if an object's velocity is below the threshold it will treat it as having an elasticity of 0. After some quick testing it appears it occurs if the velocity is less than 50 (for the perpendicular direction at least).

Is there anyway to modify this value in C2, or get around it by modifying other physics properties? I can create my own collision events if absolutely necessary, but I'd prefer to stick with all physics. I'd like the object to bounce even if it is moving very slowly, only coming to a stop once the linear damping causes it to.

Link to capx

Thanks for any info/ideas

Ok I just tested the same demo built through AppMobi and Phonegap, and the apk built with AppMobi runs roughly 10 FPS faster. However, I'm almost certain that the AppMobi version is running at a lower resolution as I had a text object that said the viewport was 800px wide on Phonegap and 533px wide on AppMobi. So they are definitely building the apk files differently, but it would be difficult to determine which one is better at this point.

Yea I'll try that the first chance I get... I'm also interested in whether or not there's a difference.

Thanks, switching to fullscreen did the trick. After switching to that it worked on my android phone. Performance seems to be much smoother than Phonegap from what I can tell. However I am having issues with collision detection between very small objects (2x2 px) which I'm guessing is a result of the lower framerate.

Hmmm... thats interesting. It's nice to see that apparently someone has got it working. I'm not concerned about the hyperlink as its a feature of construct free and I plan on purchasing a license in the very near future.

I know that AppMobi isn't officially supported but I saw some people mention that are working with it and having success. I was just wondering if someone who had luck getting it work could shed some light on how exactly they went about it.

I exported my game from C2 as an HTML project, then simply loaded the resulting folder into the AppMobi XDK as a new project. To my amazement it worked on the built in iOS and Android device emulators flawlessly. However, my excitement was premature as when I built the project as a native Android .apk and tried running it on my phone all I got was a black canvas. The hyperlink to the Scirra website was still under it tho.

So has anyone has success building your C2 project into a native app using the AppMobi XDK? It was so promising seeing my game run perfectly on that little emulators screen lol.

Well thanks for taking the time to look into it. For the mean time I'm going to stick with a strict layout size and not run in full screen that way I can least continue to work on the mechanics of the gameplay. My main concern is how will various screen sizes and resolutions on mobile devices affect this, as my end goal is to turn this into a native phone app at some point.

I get what you're saying Yann, so how would you suggest I set up my layout and window properties so that the game works properly and scales to correctly spawn lilypads just off the screen on any display? Should I set the dimensions based on the smallest resolution I want to display (mobile devices) and stretch it?

I'm just not sure what the issue is. I tried changing the dimensions to the actual resolution of my desktop (1366,768) and it says the pads are spawning at x = 1398, but they are still spawning inside the window noticeably. Could this possibly be a bug with the scaling feature?

Well the issue is that some of the lilypads are spawning off of the screen, or further away than they should be. I know it's not the values I'm using because I tried the same expressions with a fixed window size in non full screen scaled mode and they worked fine. Could this possibly be because I have a wide screen monitor?

So I have a game where I want to spawn objects right outside of the screen and have them move across it. The problem I'm having is exactly how I should go about determining where to spawn the objects. I've tried spawning them using the layoutHeight and Width properties but in fullscreen scaled mode it ends up spawning them inside the window. When I use windowHeight and Width it spawns them inside when in windowed mode and much too far outside when in fullscreen mode. I want my game to work on all screen sizes consistently and it doesn't seem to be possible. I've ran all my tests in full screen scaled mode.

I included my

capx

Thanks for any input.

Lol.... sorry to waste your time, but thanks for the effort. Your second example actually gave me an idea for something else so it wasn't a complete loss :P