Basic Anticheat (C++)

#include <map>
#include <string>
#include <vector>

class AntiCheat {
public:
  AntiCheat() {
  }

  void logAction(const std::string& playerName, double value) {
    auto playerIter = players.find(playerName);
    if (playerIter == players.end()) {
      playerIter = players.emplace(playerName, Player(playerName)).first;
    }
    playerIter->second.addAction(value);

    auto baselineIter = baselines.find(playerName);
    if (baselineIter == baselines.end()) {
      baselineIter = baselines.emplace(playerName, calculateBaseline(playerIter->second)).first;
    }

    if (abs(value - baselineIter->second) > threshold) {
      std::cout << "Detected unusual activity from player " << playerName << ": " << value << std::endl;
      // Take appropriate action (e.g. ban player)
    }
  }

private:
  double calculateBaseline(const Player& player) {
    // Calculate baseline of normal behavior for player
  }

  class Player {
  public:
    Player(const std::string& name) : name(name) {
    }

    void addAction(double value) {
      actions.push_back(value);
    }

  private:
    std::string name;
    std::vector<double> actions;
  };

  std::map<std::string, Player> players