holesome/src/game/game.cpp

#include <utility>
#include <SFML/Window/Event.hpp>
#include <SFML/Graphics/RenderWindow.hpp>

#include "game.h"
#include "../config.h"

Game::Game(std::shared_ptr<sf::RenderWindow> window) : window(std::move(window)), gameObjects()
{
}

void Game::run()
{
    sf::Clock clock;
    sf::Time TimeSinceLastUpdate = sf::seconds(0);

    while (window->isOpen())
    {
        processEvents();
        TimeSinceLastUpdate += clock.restart();
        while (TimeSinceLastUpdate >= FRAME_TIME)
        {
            TimeSinceLastUpdate -= FRAME_TIME;

            update();
            processEvents();
        }
        drawFrame();
    }
}

void Game::exit()
{
    window->close();
}

void Game::drawFrame()
{
    window->clear(sf::Color::Black);

    for (auto &gameObject: gameObjects)
    {
        gameObject->draw(window.get());
    }

    window->display();
}

Game::~Game()
{
    for (auto &gameObject: gameObjects)
    {
        delete gameObject;
    }
}

void Game::addGameObject(GameObject *gameObject)
{
    gameObjects.push_back(gameObject);
}

void Game::update()
{
    for (auto &gameObject: gameObjects)
    {
        gameObject->update();
    }
}

void Game::processEvents()
{
    sf::Event event;
    while (window->pollEvent(event))
    {
        switch (event.type)
        {
            case sf::Event::KeyPressed:
                // Close game on Escape or Q in DEV Mode
                if (DEVELOPER_MODE && (event.key.code == sf::Keyboard::Escape || event.key.code == sf::Keyboard::Q))
                {
                    exit();
                }
                break;
            case sf::Event::KeyReleased:
                break;
            case sf::Event::Closed:
                exit();
                break;
            case sf::Event::Resized:
                handleWindowResize(event);
                break;
            default:
                break;
        }
    }
}

void Game::handleWindowResize(const sf::Event &event)
{
    window->setView(sf::View(sf::FloatRect(0, 0, event.size.width, event.size.height)));
}