Thank you.

I write simplest (dirty) solution I've found.

Only on linux build machine:
Force OX_HAVE_HTTP = 1 and OX_HAVE_LIBCURL = 1 in oxygine-framework CMakeFile

Install latest stable dev curl version (in my case libcurl4-openssl-dev)

Force library in CMAKE_CXX_FLAGS in CMakeList of my project -> -lcurl

Work everything.

I tried out the demo and it works but it doesn't seem to account for more recent versions of Tiled. At least, the test map I made wouldn't load because the format is quite different. It's easy enough to adapt but I thought that might be noteworthy.

Also, the demo simply draws some tiles. It doesn't demonstrate traversing across a larger map (something that might take up several screens), nor ways to interact with the Tiled data (unless I missed that).

It would be nice to get a little more depth to that demo. I assume collisions would be straight-forward. Does Oxygine have built-in features for cameras?