Question

Is it possible to pass different objects as argument for 1 function, not making 3 functions

i.e

void someFunction(Object o) {
     //working with object, all that objects have same fields to work with
     // i.e. all objects have x, y fields and this function is working with it
}

Player pl;
Item itm;
Block bl;

someFunction(pl);
someFunction(itm);
someFunction(bl);

Maybe it can be done using templates or what?
I dont want to make 3 functions with same code for different objects

Answer 1

Yes, using templates:

template<class Type> void someFunction(const Type& o) {
     //working with object, all that objects have same fields to work with
     // i.e. all objects have x, y fields and this function is working with it
}

Note that you probably will prefer to pass o by const reference, not by value. I have done this here.