CreditSystem.h

#pragma once
 
#include "Library.h"
 
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>
 
namespace CesiumUtility {
 
struct CESIUMUTILITY_API Credit {
public:
  bool operator==(const Credit& rhs) const noexcept {
    return this->id == rhs.id;
  }
 
private:
  size_t id;
 
  Credit(size_t id_) noexcept { id = id_; }
 
  friend class CreditSystem;
};
 
class CESIUMUTILITY_API CreditSystem final {
public:
  Credit createCredit(std::string&& html, bool showOnScreen = false);
 
  Credit createCredit(const std::string& html, bool showOnScreen = false);
 
  bool shouldBeShownOnScreen(Credit credit) const noexcept;
 
  void setShowOnScreen(Credit credit, bool showOnScreen) noexcept;
 
  const std::string& getHtml(Credit credit) const noexcept;
 
  void addCreditToFrame(Credit credit);
 
  void startNextFrame() noexcept;
 
  const std::vector<Credit>& getCreditsToShowThisFrame() noexcept;
 
  const std::vector<Credit>&
  getCreditsToNoLongerShowThisFrame() const noexcept {
    return _creditsToNoLongerShowThisFrame;
  }
 
private:
  const std::string INVALID_CREDIT_MESSAGE =
      "Error: Invalid Credit, cannot get HTML string.";
 
  struct HtmlAndLastFrameNumber {
    std::string html;
    bool showOnScreen;
    int32_t lastFrameNumber;
    int count;
  };
 
  std::vector<HtmlAndLastFrameNumber> _credits;
 
  int32_t _currentFrameNumber = 0;
  std::vector<Credit> _creditsToShowThisFrame;
  std::vector<Credit> _creditsToNoLongerShowThisFrame;
};
} // namespace CesiumUtility