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  1. #include <iostream>
  2. #include <vector>
  3. #include <memory>
  4. using namespace std;
  5.  
  6. class B; 
  7. class C; 
  8. class A {
  9. public: 
  10.     virtual void collide(shared_ptr<A> a) =0;  
  11.     virtual void colisionwith(B&)=0; 
  12.     virtual void colisionwith(C&)=0;
  13.     virtual ~A() {}
  14. };
  15.  
  16. class B : public A {
  17. public:
  18.     void collide(shared_ptr<A> a) override { a->colisionwith(*this);   } 
  19.     void colisionwith(B&) override; 
  20.     void colisionwith(C&) override;
  21. };
  22.  
  23. class C : public A {
  24. public:
  25.     void collide(shared_ptr<A> a) override { a->colisionwith(*this);  } 
  26.     void colisionwith(B&) override; 
  27.     void colisionwith(C&) override;
  28. };
  29.  
  30. void B::colisionwith(C&c) { cout <<"B "<<this<<" colides width a C "<< &c <<endl; }
  31. void B::colisionwith(B&b) { cout <<"B "<<this<<" colides width another B "<< &b <<endl; }
  32. void C::colisionwith(C&c) { cout <<"C "<<this<<" colides width another C "<< &c <<endl; }
  33. void C::colisionwith(B&b) { cout <<"C "<<this<<" colides width a B "<< &b <<endl; }
  34.  
  35. int main() {
  36. 	vector<shared_ptr<A>> objects; 
  37. 	objects.push_back (make_shared<B>()); 
  38. 	objects.push_back (make_shared<B>()); 
  39. 	objects.push_back (make_shared<C>()); 
  40.     for (int i = 0; i < objects.size(); i++)
  41.     {
  42.         for (int j=i+1; j < objects.size(); j++)
  43.         {
  44.         	objects[i]->collide(objects[j]);
  45.          }
  46.     }
  47. return 0;
  48. }
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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B 0x55744be9bc70 colides width another B 0x55744be9bc30
C 0x55744be9bc50 colides width a B 0x55744be9bc30
C 0x55744be9bc50 colides width a B 0x55744be9bc70
https://ideone.com/7GsJhV
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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