LÖVE

Hi guys,

In this attached .love, my image is supposed to move in x smoothly,
but sometimes (every ~10 secs) the movement is break and my image seems to be teleported. (just few pixels)

It run at 60 fps all the time, I have also tested with another PC. (I'm on love 0.7.2)

This is very annoying, because that break the game's fluidity.

If anyone knows what this is due (and tell me if you have the same problem please)...

There is absolutely nothing wrong with your code.

The problem lies with the computer. Windows, OS X or Linux? There is obviously something running in the background that gobbles up processor cycles causing this. It's not Löve. I'm 99.999999999999999% certain.

I've a PC run on Windows 7 x86, with the CPU usage at 1% when I do nothing, 15% when I run my .love (I have a 2 years old Notebook, Intel Core 2 Duo @ 2.00 GHz), I will try to update all my drivers but I have no hope.

Does it happen when the game is full-screen?

xefhs wrote:In this attached .love, my image is supposed to move in x smoothly,
but sometimes (every ~10 secs) the movement is break and my image seems to be teleported. (just few pixels).

You can always cap the maximum DT to prevent large teleports.

I get the exact same issue. I get it with my own game, but also with the love program without parameters (ie. it happens on all love programs).

I also get a max framerate of 60 FPS. It freezes for a few frames (half a second to a second probably), then continues.

Ubuntu 11.10 on a Gateway LT3201h netbook
AMD Athlon 2 Neo Processor K125, 3GB ram,
ATI Mobility Radeon HD 4225

I don't have the 'Additional Drivers' installed for the graphics card because it doesn't work great with this machine on ubuntu... for that reason I just ignored this issue on this computer.

I've tried VSync on and off, no changes.

It lagged for a few seconds when I started the demo, but became smooth later.

Running smoothly at 61FPS with unnoticeable bumps to 59. Geforce 4 MX on windows.

I'm not alone
No seriously, I run it windowed with the default window size 800*600, and I have also these lags in all LÖVE programs.
I've updated my graphics card drivers but doesn't change anything.

It lagged for a few seconds when I started the demo, but became smooth later.

Me too and I think that is normal because LÖVE is getting ready, it doesn't matter for me.

Jasoco wrote:There is absolutely nothing wrong with your code.

The problem lies with the computer. Windows, OS X or Linux? There is obviously something running in the background that gobbles up processor cycles causing this. It's not Löve. I'm 99.999999999999999% certain.

I agree. It could be an antivirus, autoupdate, or anything running in the background, invisible to user. It could be also the graphics card (or its driver). I am attaching modified version, which shows current/max dt. I get dt=0.017, maxdt=0.14-0.20, FPS at 60, and all is smooth. So no problem for me.