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HTML5 Studio 2 HTML5 (box2D bugs)


predictably random
Forum Staff
Spent some time yesterday with HTML5 exports from Studio 2. Mostly, it works well. My platformer games ran smoothly. So overall, I'm pretty happy with it.

But I was disappointed in box2D performance. Seems very broken. For example, using the default physics_world settings for pixel-meter scaling (0.1) and gravity (10) causes physics objects to fly out of view almost instantly.

The only way box2D works in Studio 2 HTML5, is with gravity set to about 0.1 - 0.05 or so. Same for applied forces and impulses. But with those very low settings, it behaves like the Windows exports. So maybe there's a units problem (cgs vs. mks). Or maybe a problem with pixel-meter scaling in HTML5.

I know this sounds dumb... but was box2D actually tested in HTML5 exports? I understand this is a beta version, but I'm surprised this was missed.

Box2D works beautifully in test mode and Windows exports, however.


YoYo Games Staff
YYG Staff
Please file a bug with a sample project (Use a YYZ, File -> Export Project) that illustrates the problem in as few lines of code (or DnD) as possible, that way it is easier to find the bug.

You can file a bug with Help -> Report a bug in the IDE



I am getting the same results with the HTML5 export... physics is super strong in html5 but windows export everything works normal.