fork download
copy 
  1. #include <iostream>
  2. #include <vector>
  3. #include <algorithm>
  4. #include <string>
  5.  
  6. struct Entity;
  7. static std::vector<Entity*> entities;
  8.  
  9. struct Entity
  10. {    
  11.     std::string entityName;
  12.  
  13.     Entity(const std::string &name) : entityName(name)
  14.     {
  15.         entities.push_back(this);
  16.     }
  17.  
  18.     Entity(const Entity &src)
  19.         : Entity(src.entityName)
  20.     {
  21.     }
  22.  
  23.     ~Entity()
  24.     {
  25.         auto iter = std::find(entities.begin(), entities.end(), this);
  26.         if (iter != entities.end())
  27.             entities.erase(iter);
  28.     }
  29.  
  30.     void Draw()
  31.     {
  32.         // do drawing things
  33.         std::cout << "drawing " << entityName << " ..." << std::endl;
  34.     }
  35. };
  36.  
  37. Entity player("player");
  38. Entity enemy("enemy");
  39.  
  40. void renderEntities()
  41. {
  42.     for (auto *entity : entities)
  43.     {
  44.         entity->Draw();
  45.     }
  46. }
  47.  
  48. int main()
  49. {
  50.     renderEntities();
  51. 	return 0;
  52. }
Success #stdin #stdout 0s 4472KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
drawing player ...
drawing enemy ...
https://ideone.com/L9i02L
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!