text: #pragma once
  #include "entity.hpp"
  
  class O2Plant: public Entity
  {
  public:
    O2Plant(World&, int lifeSpan, int prodRate, float x, float y);
    ~O2Plant();
    void draw(Rend &) override;
    static const int Matter = 100;
    int getMatter() const override;
  private:
    int prodRate;
  };
  