Time Sync « cocos2d for iPhone

Time Sync

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ravenousgames
Member
I'm having some trouble with objects that I'm rotating falling out of sync with each other. Anyone have any ideas how to make sure these objects are time synced? I'm assuming I need to set some sort of a baseline timer and then compare against that but I'm not sure.
```
-(void) update : (ccTime) dt
{
    currentRotation += rotationSpeed * dt;
    if(currentRotation >= 360)		currentRotation = 0;
    [hammerNode setRotation:currentRotation];
}
```
Posted 6 months ago #
zaaroth
Member

Each update may have a different dt (just a guess). Use the same update method to rotate all of them. This way you ensure correctness.

Posted 6 months ago #
ravenousgames
Member

Thanks @zaaroth. That helped! I guess I over-thought it. I originally let all the objects on the map schedule their own updates. Now I iterate over them and call the update function manually.

Posted 6 months ago #
jhspaybar
Member

The issue with the code you posted if I had to guess, is that sometimes your angle would be 361, or 362, or 365, etc and you weren't keeping the "remainder". If you changed the code to just subtract 360 from the angle you'd be in a lot better shape.

Posted 6 months ago #
ravenousgames
Member

@jhspaybar: Good call. I ended up figuring that out shortly after my last post. But for anyone else who finds this thread down the road, this was needed as well.

Posted 6 months ago #

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