I'm trying to develop my first game for Windows and Android.
After reading a bit about available options i decided that for those given platforms the best choice would be Java + libgdx.
As for my first 2d game it will be simple clone of Missile Command :-).
For now I have some missiles which can be launched to a specific target location (mouse click) with certain speed in pixels/second.
After the missile reaches target it creates Explosion object (Actor) on the screen in given location and the Explosion itself grows until max radius is reached.
I would like to detect collisions between 2 pairs of objects Explosion <-> EnemyMissile and EnemyMissile <-> Building.