src/openvic-simulation/GameAdvancementHook.cpp


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#include "GameAdvancementHook.hpp"

using namespace OpenVic;

const std::vector<std::chrono::milliseconds> GameAdvancementHook::GAME_SPEEDS = {
   std::chrono::milliseconds { 4000 }, std::chrono::milliseconds { 3000 }, std::chrono::milliseconds { 2000 },
   std::chrono::milliseconds { 1000 }, std::chrono::milliseconds { 100 },  std::chrono::milliseconds { 1 }
};

GameAdvancementHook::GameAdvancementHook(
   AdvancementFunction tick_function, RefreshFunction update_function, bool start_paused, speed_t starting_speed
)
   : trigger_function { tick_function }, refresh_function { update_function }, is_paused { start_paused } {
   last_polled_time = std::chrono::high_resolution_clock::now();
   set_simulation_speed(starting_speed);
}

void GameAdvancementHook::set_simulation_speed(speed_t speed) {
   if (speed < 0) {
      current_speed = 0;
   } else if (speed >= GAME_SPEEDS.size()) {
      current_speed = GAME_SPEEDS.size() - 1;
   } else {
      current_speed = speed;
   }
}

void GameAdvancementHook::increase_simulation_speed() {
   set_simulation_speed(current_speed + 1);
}

void GameAdvancementHook::decrease_simulation_speed() {
   set_simulation_speed(current_speed - 1);
}

bool GameAdvancementHook::can_increase_simulation_speed() const {
   return current_speed + 1 < GAME_SPEEDS.size();
}

bool GameAdvancementHook::can_decrease_simulation_speed() const {
   return current_speed > 0;
}

GameAdvancementHook& GameAdvancementHook::operator++() {
   increase_simulation_speed();
   return *this;
};

GameAdvancementHook& GameAdvancementHook::operator--() {
   decrease_simulation_speed();
   return *this;
};

void GameAdvancementHook::conditionally_advance_game() {
   if (!is_paused) {
      time_point_t currentTime = std::chrono::high_resolution_clock::now();
      if (std::chrono::duration_cast<std::chrono::milliseconds>(currentTime - last_polled_time) >= GAME_SPEEDS[current_speed]) {
         last_polled_time = currentTime;
         if (trigger_function) {
            trigger_function();
         }
      }
   }
   if (refresh_function) {
      refresh_function();
   }
}

void GameAdvancementHook::reset() {
   is_paused = true;
   current_speed = 0;
}