CocoonJS slow down

Strange thing keeps happening. I made a very simple game for mobile... hardly any graphics, no music, no sound... but I kept noticing some severe slow down, and couldn't figure out why.

I pulled my game apart, and found that whenever a global variable is altered, the game pauses. Originally I had a global variable constantly being altered, but I've now changed it to once every second. Low and behold, now I get a slow down once every second.

Anyone else able to replicate this?

Never had any issue like this with CocoonJS.

Is it doing anything else when updating the variable?

ArcadEd, yes, but nothing major.

<img src="http://imageshack.com/a/img841/963/ydtm.png" border="0" />

This is what it looks like. As soon as I disable that line at the bottom, everything runs perfectly smooth.

No idea why.

In the code above, why are you checking the overlap of sprite3 twice?

Not sure why that would make a difference.

ArcadEd

Oh sorry, I was in the middle of testing between overlap and collision when I took the screenshot. One of them was meant to be crossed out.

Checking for collisions is vey expensive, especially if there are lots of these sprites at once. REmove the collision check and see if you still get the slow-down.

-Mike

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Also I think the collision check is better done before checking the variable, due to the change in C2 collision detection (I could be mistaken).

For the variable, I don't know at all though, maybe you could try alterating a non global variable to see if that changes something (like a text value), even though I don't think this is worth it in the long run

If there is not going to be an else there, you can also move the is Alive check to the top level as well.

What's the difference with using Overlap vs actual On Collision with Object, performance difference? My game uses only the later, and there's no problems with slowdowns... even on a crap HTC Incredible S with an old 1ghz dual core.