1.Make the "Target" object rotate around its Z Axis via Animation endlessly.
2.Make one pool of spheres.
3.On Mouse Button Down use RayCast and mousePoistion coordinates to hit the wall behind the target.
	-Get one free sphere from the pool and use LookAt to make the sphere look to the point of raycast hit. 
	-Use AddRelativeForce to shoot the sphere.
	-If a sphere hits the target print "Hit!" in the console