Yes I did, but it seems it uses classes specially made for the demo because when I learnt the "springes.c" code, I saw calls of methods defined in classes that are only in the demo... (so I had try copying these classes in my project but it screw it all ^^)
I can't figure out how to learn, step by step, how to use each object. (An experienced programer probably goes to the classes definitions and find the way, but I'm not this one). Need explanations in English (french would be perfect but I won't push it^^).
you, did you started and find your way just by looking at the sample codes ?