text: #pragma once
  
  #include <vector>
  
  #include "ItemModel.h"
  
  class ItemSystem;
  
  class IMPPolicy
  {
  public:
  	virtual const std::vector<const ItemModel *> & getInventory() const = 0;
  	virtual const std::vector<const ItemModel *> & getGoodShooterItems() const = 0;
  	virtual const std::vector<const ItemModel *> & getNormalShooterItems() const = 0;
  	// this could be defaulted in C++11
  	virtual ~IMPPolicy() {}
  };
  