/*
 * =====================================================================================
 *
 *       Filename:  Application.cpp
 *
 *    Description:
 *
 *        Version:  1.0
 *        Created:  14/12/2014 05:09:21
 *       Revision:  none
 *       Compiler:  gcc
 *
 *         Author:  Quentin BAZIN, <quent42340@gmail.com>
 *        Company:
 *
 * =====================================================================================
 */
#include <cstdlib>
#include <ctime>

#include "Application.hpp"
#include "Config.hpp"
#include "Exception.hpp"
#include "GameState.hpp"
#include "Mouse.hpp"
#include "OpenGL.hpp"
#include "SDLHeaders.hpp"

Application::Application() : m_stateStack(ApplicationStateStack::getInstance()) {
	srand(time(NULL));

	m_window.open(APP_NAME, SCREEN_WIDTH, SCREEN_HEIGHT);
	m_window.setMouseCursorGrabbed(true);
	m_window.setMouseCursorVisible(false);
	m_window.setVerticalSyncEnabled(true);

	m_renderer.init(m_window);

	m_stateStack.push(new GameState());
}

void Application::handleEvents() {
	Mouse::reset();

	SDL_Event event;
	while(SDL_PollEvent(&event) != 0) {
		switch(event.type) {
			case SDL_QUIT:
				m_window.close();
				break;
			case SDL_KEYDOWN:
				if(event.key.keysym.sym == SDLK_ESCAPE) {
					m_window.close();
				}
				break;
			case SDL_MOUSEMOTION:
				// Mouse::update(event.motion.x, event.motion.y, event.motion.xrel, event.motion.yrel);
				if(SCREEN_WIDTH / 2 != event.motion.x || SCREEN_HEIGHT / 2 != event.motion.y) {
					Camera::getInstance().turnH(event.motion.xrel * 0.06);
					Camera::getInstance().turnV(-event.motion.yrel * 0.06);

					SDL_WarpMouseInWindow(m_window.window(), SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2);
				}
				break;
			default:
				break;
		}
	}
}

void Application::run() {
	while(m_window.isOpen()) {
		m_clock.measureLastFrameDuration();

		handleEvents();

		m_clock.updateGame([&]{
			m_stateStack.top().update();
		});

		m_clock.drawGame([&]{
			m_window.clear();

			m_stateStack.top().draw();

			m_window.display();
		});
	}
}