As far as I know, the engine itself is entirely written in C++. The physics engine is part of it, so yes, it is in C++ too.
¿Just c++? ¿is nothing more? ¿is not nothing of GDscript?
thanks fot fast answer.
RODGIMA | 2016-08-07 13:47
The engine is completely made with C++, but you can use GDScript if you want.
Zylann | 2016-08-07 13:49
¿It means that the GDscript uses the c++ codes and nothing is written on GDcript, just the behaviors written by the user when is making a new game on the Integrated console?
RODGIMA | 2016-08-07 13:53
Yes, GDScript uses C++. Also, if someday you decide to write C++ in Godot, this will become available to GDScript as well, thanks to the binding system of the engine.