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JIC-CSB / kilombo

Kilobot simulator in C
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Blank simulator window #50

Open MerihanAlhafnawi opened 5 years ago

MerihanAlhafnawi commented 5 years ago

Hello,

I've been using Kilombo for a while now, but then something went wrong (possibly after an Xcode update). Whenever I run, the attached picture is what I get (just blank). I tried running the example code given, but still get the blank screen (this issue was not there before, only happens when I recompile now - even if it is the same code that was working before).

I tried installing Kilombo again and compiling and running the example codes, but I get the same issue. Any ideas on what went wrong?

Thanks!

Screen Shot 2019-06-14 at 8 39 51 PM
mhinsch commented 5 years ago

I think this might be an issue with libSDL on OS X. See: https://discourse.libsdl.org/t/macos-10-14-mojave-issues/25060 and https://bugzilla.libsdl.org/show_bug.cgi?id=4272

Could you maybe try moving the window or trying to resize it? If that makes the content show this should be indeed the referenced bug in libSDL.

MerihanAlhafnawi commented 5 years ago

It makes sense that the issue might be from libSDL (possibly after an update to Mojave), however, moving the screen or resizing it has no effect unfortunately (still is blank).

fjansson commented 5 years ago

I agree this seems to be an issue with SDL and the new OSX. The same symptom was mentioned in Issue https://github.com/JIC-CSB/kilombo/issues/47, a few messages down.

The libSDL bug is marked as fixed in SDL2. I couldn't see it fixed in SDL1.2 which we use. Apparently SDL 1.2 is not going to be updated much anymore, so on the long term we should probably switch to SDL2.

@MerihanAlhafnawi, if you installed SDL through brew, you could try brew update to make sure you have the latest version. As a work-around if that doesn't help, you can try running in a Linux virtual machine.

zgvera commented 5 years ago

If that's the issue, how can I switch to SDL2 when I compile the examples? I already updated my SDL, but it still doesn't work. Should I change anything in the makefile or reinstall the simulator?

I agree this seems to be an issue with SDL and the new OSX. The same symptom was mentioned in Issue #47, a few messages down.

The libSDL bug is marked as fixed in SDL2. I couldn't see it fixed in SDL1.2 which we use. Apparently SDL 1.2 is not going to be updated much anymore, so on the long term we should probably switch to SDL2.

@MerihanAlhafnawi, if you installed SDL through brew, you could try brew update to make sure you have the latest version. As a work-around if that doesn't help, you can try running in a Linux virtual machine.

I agree this seems to be an issue with SDL and the new OSX. The same symptom was mentioned in Issue #47, a few messages down.

The libSDL bug is marked as fixed in SDL2. I couldn't see it fixed in SDL1.2 which we use. Apparently SDL 1.2 is not going to be updated much anymore, so on the long term we should probably switch to SDL2.

@MerihanAlhafnawi, if you installed SDL through brew, you could try brew update to make sure you have the latest version. As a work-around if that doesn't help, you can try running in a Linux virtual machine.

fjansson commented 5 years ago

@zgvera , switching to SDL2 is somewhat complicated - it requires changing the graphics part of the kilombo code. Just the changing the makefile or reinstalling will not help. You can try running in a Linux virtual machine as a workaround.

If you or someone else would like to try updating kilombo to SDL2 I'd be very grateful - it's on the to-do list, but I think no-one is actively working on it. Maybe this guide is of some use: https://wiki.libsdl.org/MigrationGuide .