#include "engine.h"

#include <iostream>
#include <chrono>
#include <thread>
#include <queue>

// Define a structure to represent notifications
struct Notification {
	std::string message;
	float displayStartTime = 0.0f;
};

// Use a queue to manage notifications
//std::queue<Notification> notificationQueue;
// Use a vector to manage notifications
std::vector<Notification> notifications;

Engine::Engine() {}

Engine::~Engine() {
	m_world.CleanUpWorld(m_renderCount, true);
	for (int x = 0; x < WORLD_SIZE_X; ++x)
		for (int y = 0; y < WORLD_SIZE_Y; ++y)
			if (m_world.GetChunks().Get(x, y))
				m_world.GetChunks().Get(x, y)->~Chunk();
}

void Engine::DrawSplachScreen()
{
	glDisable(GL_LIGHTING);
	glDisable(GL_DEPTH_TEST);
	glDisable(GL_STENCIL_TEST);

	// Définir la matrice de projection en mode orthographique
	glMatrixMode(GL_PROJECTION);
	glPushMatrix();
	glLoadIdentity();
	glOrtho(-Width() / 2, Width() / 2, -Height() / 2, Height() / 2, -1, 1);

	// Définir la matrice de modèle-vue
	glMatrixMode(GL_MODELVIEW);
	glPushMatrix();
	glLoadIdentity();

	// L'image sera centrée autour de l'origine (0, 0, 0)
	int imageWidth = Width(); // Remplacez par la largeur de votre image
	int imageHeight = Height(); // Remplacez par la hauteur de votre image

	// Texture
	SplachScreenTexture.Bind();

	// Dessiner un quadrilatère centré
	glBegin(GL_QUADS);
	glTexCoord2f(0, 0);
	glVertex2i(-imageWidth / 2, -imageHeight / 2);
	glTexCoord2f(1, 0);
	glVertex2i(imageWidth / 2, -imageHeight / 2);
	glTexCoord2f(1, 1);
	glVertex2i(imageWidth / 2, imageHeight / 2);
	glTexCoord2f(0, 1);
	glVertex2i(-imageWidth / 2, imageHeight / 2);
	glEnd();

	// Activer la transparence
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glBlendEquation(GL_FUNC_ADD);
	glEnable(GL_BLEND);

	// Restaurer les matrices précédentes
	glMatrixMode(GL_PROJECTION);
	glPopMatrix();
	glMatrixMode(GL_MODELVIEW);
	glPopMatrix();
}



void Engine::DrawMenu()
{
	static const int sTitle = 400;
	static const int sButton = 225;

	glDisable(GL_LIGHTING);


	glDisable(GL_DEPTH_TEST);
	glDisable(GL_STENCIL_TEST);
	glMatrixMode(GL_PROJECTION);
	glPushMatrix();
	glLoadIdentity();
	glOrtho(0, Width(), 0, Height(), -1, 1);
	glMatrixMode(GL_MODELVIEW);
	glPushMatrix();

	MenuBGTexture.Bind();
	glLoadIdentity();
	glBegin(GL_QUADS);
	glTexCoord2f(0, 0);
	glVertex2i(0, 0);
	glTexCoord2f(1, 0);
	glVertex2i(Width(), 0); //
	glTexCoord2f(1, 1);
	glVertex2i(Width(), Height());
	glTexCoord2f(0, 1);
	glVertex2i(0, Height());
	glEnd();

	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glBlendEquation(GL_FUNC_ADD);
	glEnable(GL_BLEND);

	if (m_gamestate != GameState::OPTIONS)
	{
		MenuTitleTexture.Bind();
		glTranslated(200, 300, 0);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 0);
		glVertex2i(0, 200);
		glTexCoord2f(1, 0);
		glVertex2i(sTitle, 200);
		glTexCoord2f(1, 1);
		glVertex2i(sTitle, 300);
		glTexCoord2f(0, 1);
		glVertex2i(0, 300);
		glEnd();



		MenuStartTexture.Bind();
		glTranslated(80, -225, 0);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 0);
		glVertex2i(0, 100);
		glTexCoord2f(1, 0);
		glVertex2i(sButton , 100);
		glTexCoord2f(1, 1);
		glVertex2i(sButton, 200);
		glTexCoord2f(0, 1);
		glVertex2i(0, 200);
		glEnd();


		/*MenuResumeTexture.Bind();
		glTranslated(0, -100, 0);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 0);
		glVertex2i(0, 125);
		//glTexCoord2f(1, 0);
		glVertex2i(sButton, 125);
		glTexCoord2f(1, 1);
		glVertex2i(sButton, 200);
		glTexCoord2f(0, 1);
		glVertex2i(0, 200);
		glEnd();*/

		/*MenuOptionsTexture.Bind();
		glTranslated(0, -100, 0);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 0);
		glVertex2i(0, 125);
		glTexCoord2f(1, 0);
		glVertex2i(sButton, 125);
		glTexCoord2f(1, 1);
		glVertex2i(sButton, 200);
		glTexCoord2f(0, 1);
		glVertex2i(0, 200);
		glEnd();*/

		MenuQuitTexture.Bind();
		glTranslated(0, -100, 0);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 0);
		glVertex2i(0, 100);
		glTexCoord2f(1, 0);
		glVertex2i(sButton, 100);
		glTexCoord2f(1, 1);
		glVertex2i(sButton, 200);
		glTexCoord2f(0, 1);
		glVertex2i(0, 200);
		glEnd();

	}
	else
	{
		/*MenuOptionsTexture.Bind();
		glTranslated(200, 0, 0);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 0);
		glVertex2i(0, 0);
		glTexCoord2f(1, 0);
		glVertex2i(sTitle, 0);
		glTexCoord2f(1, 1);
		glVertex2i(sTitle, 200);
		glTexCoord2f(0, 1);
		glVertex2i(0, 200);
		glEnd();

		WireFrameTexture.Bind();
		glTranslated(0, 300, 0);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 0);
		glVertex2i(0, 125);
		glTexCoord2f(1, 0);
		glVertex2i(sButton, 125);
		glTexCoord2f(1, 1);
		glVertex2i(sButton, 200);
		glTexCoord2f(0, 1);
		glVertex2i(0, 200);
		glEnd();

		OnOffBtnTexture.Bind();
		glTranslated(200, 0, 0);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 0);
		glVertex2i(0, 125);
		glTexCoord2f(1, 0);
		glVertex2i(sButton, 125);
		glTexCoord2f(1, 1);
		glVertex2i(sButton, 200);
		glTexCoord2f(0, 1);
		glVertex2i(0, 200);
		glEnd();
		glTranslated(-400, -300, 0);

		MusicTexture.Bind();
		glTranslated(200, 200, 0);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 0);
		glVertex2i(0, 125);
		glTexCoord2f(1, 0);
		glVertex2i(sButton, 125);
		glTexCoord2f(1, 1);
		glVertex2i(sButton, 200);
		glTexCoord2f(0, 1);
		glVertex2i(0, 200);
		glEnd();

		OnOffBtnTexture.Bind();
		glTranslated(200, 0, 0);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 0);
		glVertex2i(0, 125);
		glTexCoord2f(1, 0);
		glVertex2i(sButton, 125);
		glTexCoord2f(1, 1);
		glVertex2i(sButton, 200);
		glTexCoord2f(0, 1);
		glVertex2i(0, 200);
		glEnd();

		BackBtnTexture.Bind();
		glTranslated(-375, 175, 0);
		glBegin(GL_QUADS);
		glTexCoord2f(0, 0);
		glVertex2i(0, 140);
		glTexCoord2f(1, 0);
		glVertex2i(sButton, 140);
		glTexCoord2f(1, 1);
		glVertex2i(sButton, 200);
		glTexCoord2f(0, 1);
		glVertex2i(0, 200);
		glEnd();*/
	}

	//glEnable(GL_LIGHTING);
	glDisable(GL_BLEND);
	glEnable(GL_DEPTH_TEST);
	glMatrixMode(GL_PROJECTION);
	glPopMatrix();
	glMatrixMode(GL_MODELVIEW);
	glPopMatrix();
	ShowCursor();
}

void Engine::Init() {


	GLenum glewErr = glewInit();
	if (glewErr != GLEW_OK) {
		std::cerr << " ERREUR GLEW : " << glewGetErrorString(glewErr) << std::endl;
		abort();
	}

	uint64_t seed = SEED;
	char ch;

	glDisable(GL_FRAMEBUFFER_SRGB);
	glEnable(GL_DEPTH_TEST); 
	glEnable(GL_STENCIL_TEST);
	glEnable(GL_POINT_SMOOTH);
	glEnable(GL_BLEND);
	glEnable(GL_CULL_FACE);
	glEnable(GL_TEXTURE_2D);

	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();

	gluPerspective(45.0f, (float)Width() / (float)Height(), 0.1f, VIEW_DISTANCE);
	glShadeModel(GL_SMOOTH);

	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
	glDisable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glBlendEquation(GL_FUNC_SUBTRACT);
	
	// 
	// Objet de skybox avec sa propre texture et son propre shader!
	m_skybox.Init(0.2f);

	// Objet de musique!
	//m_audio.ToggleMusicState();

	// Array pour les balles.
	for (int x = 0; x < MAX_BULLETS; ++x) {
		m_bullets[x] = nullptr;
		m_whoosh[x] = nullptr;
	}

		std::cout << "Jouer en ligne? [o/N] ";
		std::cin >> ch;
		std::cout << std::endl;

		if (ch == 'o' || ch == 'O') {
			char* input = new char[32];
			std::string playname, srvname;

			while (playname.size() < 1) {
				std::cout << "Veuillez entrer un nom de joueur: ";
				std::cin.ignore();
				std::cin.getline(input, 32);
				std::cout << std::endl;
				playname = input;
				if (playname.size() < 1 || playname.size() > 32)
					std::puts("Nom invalide.");
			}
			while (srvname.size() < 1) {
				std::cout << "Veuillez entrer une adresse de serveur: ";
				std::cin.getline(input, 32);
				std::cout << std::endl;
				srvname = input;
				if (srvname.size() < 1 || srvname.size() > 32)
					std::puts("Adresse serveur invalide.");
			}
			delete[] input;

			if (!m_conn.Init()) {
				if (!m_conn.Connect(srvname.c_str(), playname)) {
					// setup jeu en reseau.
					std::cout << "ID recu du serveur: " << std::to_string(m_conn.getId()) << "!" << std::endl;
					std::cout << "Seed recu du serveur: " << std::to_string(m_conn.getSeed()) << "!" << std::endl;
					m_player = Player(m_conn.getOrigin().position);

					for (auto& [key, player] : m_conn.m_players)
						m_players[key] = new RemotePlayer(player);

					seed = m_conn.getSeed();
					m_networkgame = true;
				}
				else std::cout << "Erreur de connexion." << std::endl;
			}
			else std::cout << "Erreur de creation de socket." << std::endl;
		}

	m_world.SetSeed(seed);

	// Init Chunks
	m_world.GetChunks().Reset(nullptr);

	// Gestion de souris.
	CenterMouse();
	HideCursor();
}

void Engine::DeInit() {}

void Engine::LoadResource() {
	LoadTexture(m_skybox.GetTexture(), TEXTURE_PATH "skybox.png", true);
	LoadTexture(m_textureCrosshair, TEXTURE_PATH "cross.bmp", true);
	LoadTexture(m_textureFont, TEXTURE_PATH "font.bmp", true);
	LoadTexture(m_textureGun, TEXTURE_PATH "gun01.png", false);
	LoadTexture(m_texturePovGun, TEXTURE_PATH "GUN.png", false);
	LoadTexture(m_textureSoloMultiMenu, TEXTURE_PATH "single_multi.png", false);
	LoadTexture(m_textureTitle, TEXTURE_PATH "title.png", false);

	LoadTexture(MenuTitleTexture, TEXTURE_PATH "BrouillonbackgroundMenu.png");
	LoadTexture(MenuBGTexture, TEXTURE_PATH "BrouillonbackgroundMenu.png");
	LoadTexture(SplachScreenTexture, TEXTURE_PATH "sc2.png");
	LoadTexture(MenuQuitTexture, MENU_ITEM_PATH "BasicQuit.png");
	LoadTexture(MenuOptionsTexture, MENU_ITEM_PATH "test.png");
	LoadTexture(MenuStartTexture, MENU_ITEM_PATH "BasicPlay.png");
	TextureAtlas::TextureIndex texDirtIndex = m_textureAtlas.AddTexture(TEXTURE_PATH "metal3.png");
	TextureAtlas::TextureIndex texIceIndex = m_textureAtlas.AddTexture(TEXTURE_PATH "metal2.png");
	TextureAtlas::TextureIndex texGrassIndex = m_textureAtlas.AddTexture(TEXTURE_PATH "grass.png");
	TextureAtlas::TextureIndex texMetalIndex = m_textureAtlas.AddTexture(TEXTURE_PATH "dirt.png");

	if (!m_textureAtlas.Generate(TEXTURE_SIZE, false)) {
		std::cout << " Unable to generate texture atlas ..." << std::endl;
		abort();
	}

	float u, v, s;
	m_textureAtlas.TextureIndexToCoord(texDirtIndex, u, v, s, s);
	m_blockinfo[BTYPE_DIRT] = new BlockInfo(BTYPE_DIRT, "Dirt", u, v, s, 1);
	m_textureAtlas.TextureIndexToCoord(texGrassIndex, u, v, s, s);
	m_blockinfo[BTYPE_GRASS] = new BlockInfo(BTYPE_GRASS, "Grass", u, v, s, 1);
	m_textureAtlas.TextureIndexToCoord(texMetalIndex, u, v, s, s);
	m_blockinfo[BTYPE_METAL] = new BlockInfo(BTYPE_METAL, "Metal", u, v, s, 1);
	m_textureAtlas.TextureIndexToCoord(texIceIndex, u, v, s, s);
	m_blockinfo[BTYPE_ICE] = new BlockInfo(BTYPE_ICE, "Ice", u, v, s, 1);

	std::cout << " Loading and compiling shaders ..." << std::endl;
	if (!m_shader01.Load(SHADER_PATH "shader01.vert", SHADER_PATH "shader01.frag", true)) {
		std::cout << " Failed to load shader " << std::endl;
		exit(1);
	}

	if (!m_skybox.GetShader().Load(SHADER_PATH "skybox.vert", SHADER_PATH "skybox.frag", true)) {
		std::cout << " Failed to load shader " << std::endl;
		exit(1);
	}
}

void Engine::UnloadResource() {}

void Engine::InstantDamage()
{
	m_player.InflictDamage(0.10f);
	m_damage = false;
}

void Engine::SystemNotification(std::string systemLog) {
	std::string message = "";

	message = systemLog;

	DisplayNotification(message);
}
void Engine::KillNotification(Player killer, Player killed) {
	std::string message = "";

	message = killed.GetUsername() + " killed by -> " + killer.GetUsername();

	DisplayNotification(message);
}

void Engine::DisplayNotification(std::string message) {

	if (message.length() > 45) {
		message = message.substr(0, 45);
	}
	// Create a new notification and add it to the queue
	Notification newNotification;
	newNotification.message = message;
	newNotification.displayStartTime = m_time;

	notifications.push_back(newNotification);
}

// Add a method to process the notification queue
void Engine::ProcessNotificationQueue() {
	//PrintText(fPosX, fUsernamePosY, ss.str(), 1.5f);
	//float fPosX = (Width() / 100.0f) * scaleX;
	//float fPosY = Height() - (Height() * 0.05) * scaleY;

	m_textureFont.Bind();

	auto [scaleX, scaleY] = GetScale();

	float xOffset = (Width() / 1.5f) * scaleX;
	float yOffset = (Height() / 1.2f) * scaleY;

	for (auto it = notifications.begin(); it != notifications.end(); ) {
		float timeSinceDisplay = m_time - it->displayStartTime;

		float y = yOffset - (20.0f * scaleX * (it - notifications.begin()));

		glDisable(GL_STENCIL_TEST);
		glDisable(GL_DEPTH_TEST);

		glBlendFunc(GL_SRC_ALPHA, GL_ONE);
		glBlendEquation(GL_FUNC_ADD);

		glMatrixMode(GL_PROJECTION);
		glPushMatrix();

		glLoadIdentity();
		glOrtho(0, Width(), 0, Height(), -1, 1);

		glMatrixMode(GL_MODELVIEW);
		glPushMatrix();

		PrintText(xOffset, y, it->message);

		glBlendFunc(GL_CONSTANT_COLOR, GL_ONE_MINUS_CONSTANT_COLOR);
		glBlendEquation(GL_FUNC_SUBTRACT);

		glEnable(GL_STENCIL_TEST);
		glEnable(GL_DEPTH_TEST);

		glMatrixMode(GL_PROJECTION);
		glPopMatrix();
		glMatrixMode(GL_MODELVIEW);
		glPopMatrix();

		if (timeSinceDisplay >= 4.0f) {
			it = notifications.erase(it);
		}
		else {
			++it;
		}
	}
}

void Engine::DisplayCrosshair() {
	m_textureCrosshair.Bind();
	static const int crossSize = 32;
	glLoadIdentity();
	glTranslated(Width() / 2 - crossSize / 2, Height() / 2 - crossSize / 2, 0);
	glBegin(GL_QUADS);
	glTexCoord2f(0, 0);
	glVertex2i(0, 0);
	glTexCoord2f(1, 0);
	glVertex2i(crossSize, 0);
	glTexCoord2f(1, 1);
	glVertex2i(crossSize, crossSize);
	glTexCoord2f(0, 1);
	glVertex2i(0, crossSize);
	glEnd();
}

void Engine::DisplayPovGun() {
	// Setter le blend function, tout ce qui sera noir sera transparent
	glDisable(GL_STENCIL_TEST);
	glDisable(GL_DEPTH_TEST);

	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glBlendEquation(GL_FUNC_ADD);

	glMatrixMode(GL_PROJECTION);
	glPushMatrix();

	glLoadIdentity();
	glOrtho(0, Width(), 0, Height(), -1, 1);

	glMatrixMode(GL_MODELVIEW);
	glPushMatrix();

	float scaleX = (Width()) / BASE_WIDTH;
	float scaleY = (Height()) / BASE_HEIGHT;
	float baseXOffset = 0.4958 * BASE_WIDTH;
	float baseWidth = 0.4688 * BASE_WIDTH;
	float baseHeight = 0.5787 * BASE_HEIGHT;
	float xTranslation = baseXOffset * scaleX;
	float quadWidth = baseWidth * scaleX;
	float quadHeight = baseHeight * scaleY;

	m_texturePovGun.Bind();
	glLoadIdentity();
	glTranslated(xTranslation, 0, 0);
	glBegin(GL_QUADS);
	glTexCoord2f(0, 0);
	glVertex2i(0, 0);
	glTexCoord2f(1, 0);
	glVertex2i(quadWidth, 0);
	glTexCoord2f(1, 1);
	glVertex2i(quadWidth, quadHeight);
	glTexCoord2f(0, 1);
	glVertex2i(0, quadHeight);
	glEnd();

	// Reset du blend function
	glBlendFunc(GL_CONSTANT_COLOR, GL_ONE_MINUS_CONSTANT_COLOR);
	glBlendEquation(GL_FUNC_SUBTRACT);

	glEnable(GL_STENCIL_TEST);
	glEnable(GL_DEPTH_TEST);

	glMatrixMode(GL_PROJECTION);
	glPopMatrix();

	glMatrixMode(GL_MODELVIEW);
	glPopMatrix();
}

void Engine::DisplayCurrentItem() {
}


void Engine::DisplayHud(int timer) {
	glBindTexture(GL_TEXTURE_2D, 0);
	glLoadIdentity();
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	auto [scaleX, scaleY] = GetScale();

	float fBackPosX = (Width() / 25.0f) * scaleX;
	float fBackPosY = (Height() - (Height() * 0.815) * scaleY);
	float fBackWidth = (Width() / 4.0f) * scaleX;
	float fBackHeight = (Height() / 5.5f) * scaleY;

	glColor4f(1.0f, 1.0f, 1.0f, 0.2f);
	glBegin(GL_QUADS);
	glVertex2f(fBackPosX, fBackPosY);
	glVertex2f(fBackPosX + fBackWidth, fBackPosY);
	glVertex2f(fBackPosX + fBackWidth, fBackPosY + fBackHeight);
	glVertex2f(fBackPosX, fBackPosY + fBackHeight);
	glEnd();

	// HP Bar
	float fBarWidth = (Width() / 4.0f) * scaleX;
	float fBarHeight = (Height() / 25.0f) * scaleY;
	float fPosX = (Width() / 25.0f) * scaleX;
	float fBarPosY = (Height() - (Height() * 0.775) * scaleY);

	float playerHp = m_player.GetHP();
	float facteurOmbrage = m_displayInfo ? 0.5f : 1.0f;

	// HP Bar Background
	glColor3f(1.0f * facteurOmbrage, 1.0f * facteurOmbrage, 1.0f * facteurOmbrage);
	glBegin(GL_QUADS);
	glVertex2f(fPosX, fBarPosY - fBarHeight);
	glVertex2f(fPosX + fBarWidth, fBarPosY - fBarHeight);
	glVertex2f(fPosX + fBarWidth, fBarPosY);
	glVertex2f(fPosX, fBarPosY);
	glEnd();

	//TODO: Associer avec mechanique de vie du joueur

	// Barre HP
	glColor3f(0.0f * facteurOmbrage, 1.0f * facteurOmbrage, 0.0f * facteurOmbrage);
	glBegin(GL_QUADS);
	glVertex2f(fPosX, fBarPosY - fBarHeight);
	glVertex2f(fPosX + fBarWidth * playerHp, fBarPosY - fBarHeight);
	glVertex2f(fPosX + fBarWidth * playerHp, fBarPosY);
	glVertex2f(fPosX, fBarPosY);
	glEnd();

	// Equip Bar
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glColor3f(1.0f * facteurOmbrage, 1.0f * facteurOmbrage, 1.0f * facteurOmbrage);

	float fEquipWidth = (Width() * 0.175f) * scaleX;
	float fEquipHeight = (fEquipWidth / 2.5) * scaleY;
	float fEquipPosY = (Height() - (Height() * 0.765) * scaleY);

	glTranslatef(fPosX, fEquipPosY, 0);

	m_textureGun.Bind();
	glBegin(GL_QUADS);
	glTexCoord2f(0, 0); glVertex2i(0, 0);
	glTexCoord2f(1, 0); glVertex2i(fEquipWidth, 0);
	glTexCoord2f(1, 1); glVertex2i(fEquipWidth, fEquipHeight);
	glTexCoord2f(0, 1); glVertex2i(0, fEquipHeight);
	glEnd();

	//glDisable(GL_BLEND);

	// Username
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE);
	glColor3f(1.0f, 1.0f, 1.0f);

	m_textureFont.Bind();
	std::ostringstream ss;
	float fUsernamePosY = fBarPosY - (fBarHeight * 2) * scaleY;

	ss.str("");
	ss << m_player.GetUsername();
	PrintText(fPosX, fUsernamePosY, ss.str(), 1.5f);

	ss.str("");
	ss << m_player.GetHP() * 100 << "%";
	PrintText(fPosX * 6.25, fUsernamePosY, ss.str(), 1.5f);

	// Countdown
	ss.str("");
	ss << "Time: " << (int)(timer / 60) << ":" << std::setw(2) << std::setfill('0') << timer % 60;
	PrintText(Width() - (Width() * 0.2f) * scaleX, Height() - (Height() * 0.1) * scaleY, ss.str(), 2.0f);
}

void Engine::DisplayInfo(float elapsedTime, BlockType bloc) {
	m_textureFont.Bind();
	std::ostringstream ss;

	auto [scaleX, scaleY] = GetScale();

	float fPosX = (Width() / 100.0f) * scaleX;
	float fPosY = Height() - (Height() * 0.05) * scaleY;
	float charSize = 20 + (24 - 20) * (Width() - 1600) / (1920 - 1600);

	ss << " Fps : " << GetFps(elapsedTime);
	PrintText(fPosX, fPosY, ss.str());
	ss.str("");
	fPosY -= charSize;

	ss << " Rendered Chunks : " << m_renderCount;
	PrintText(fPosX, fPosY, ss.str());
	ss.str("");
	fPosY -= charSize;

	ss << " To-Be-Deleted Chunks : " << m_world.GettbDeleted();
	PrintText(fPosX, fPosY, ss.str());
	ss.str("");
	fPosY -= charSize;

	float fPosYJump = ((Height() - (Height() * 0.9f)) * scaleY);
	fPosY = fPosYJump;
	fPosY -= charSize;

	ss << " Velocity  : " << m_player.GetVelocity();
	PrintText(fPosX, fPosY, ss.str());
	ss.str("");
	fPosY -= charSize;

	ss << " Direction : " << m_player.GetDirection();
	PrintText(fPosX, fPosY, ss.str());
	ss.str("");
	fPosY -= charSize;

	ss << " Position  : " << m_player.GetPosition();
	PrintText(fPosX, fPosY, ss.str());
	ss.str("");
	fPosY -= charSize;

	ss << " Block  : ";
	if (bloc == BTYPE_LAST)
		ss << "Weapon";
	else
		ss << (int)bloc;
	PrintText(fPosX, fPosYJump, ss.str());
}

void Engine::DisplaySingleOrMultiplayerMenu() {
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glBlendEquation(GL_FUNC_ADD);

	glDisable(GL_STENCIL_TEST);
	glDisable(GL_DEPTH_TEST);

	glMatrixMode(GL_PROJECTION);
	glPushMatrix();

	glLoadIdentity();
	glOrtho(0, Width(), 0, Height(), -1, 1);

	glMatrixMode(GL_MODELVIEW);
	glPushMatrix();

	auto [scaleX, scaleY] = GetScale();
	float fBackPosX = 0.0f;
	float fBackPosY = 0.0f;
	float fBackWidth = Width();
	float fBackHeight = Height();

	m_textureSoloMultiMenu.Bind();
	glBegin(GL_QUADS);
	glTexCoord2f(0.0f, 0.0f); glVertex2f(fBackPosX, fBackPosY);
	glTexCoord2f(1.0f, 0.0f); glVertex2f(fBackWidth, fBackPosY);
	glTexCoord2f(1.0f, 1.0f); glVertex2f(fBackWidth, fBackHeight);       
	glTexCoord2f(0.0f, 1.0f); glVertex2f(fBackPosX, fBackHeight);   
	glEnd();

	float centerX = (Width() / 2.0f);
	float centerY = (Height() / 2.0f);
	float titleWidth = (centerX * 1.85f) * scaleX;
	float titleHeight = (centerY * 1.85f) * scaleY;

	// Solo game indicator
	m_textureTitle.Bind();
	glBegin(GL_QUADS);
	glTexCoord2f(0.0f, 0.0f); glVertex2f(centerX, centerY); 
	glTexCoord2f(1.0f, 0.0f); glVertex2f(titleWidth, centerY);
	glTexCoord2f(1.0f, 1.0f); glVertex2f(titleWidth, titleHeight); 
	glTexCoord2f(0.0f, 1.0f); glVertex2f(centerX, titleHeight);
	glEnd();

	glBindTexture(GL_TEXTURE_2D, 0);

	// Solo game indicator
	float fPosX = (centerX * 1.1f) * scaleX;
	float fPosXWidth = (centerX * 1.75f) * scaleX;
	float soloPosY = (centerY * 0.75f) * scaleY;
	float soloHeight = (centerY * 0.9f) * scaleY;

	glColor4f(1.0f, 1.0f, 1.0f, 0.5f);
	glBegin(GL_QUADS);
	glTexCoord2f(0.0f, 0.0f); glVertex2f(fPosX, soloPosY); 
	glTexCoord2f(1.0f, 0.0f); glVertex2f(fPosXWidth, soloPosY); 
	glTexCoord2f(1.0f, 1.0f); glVertex2f(fPosXWidth, soloHeight); 
	glTexCoord2f(0.0f, 1.0f); glVertex2f(fPosX, soloHeight);
	glEnd();

	// Multiplayer game indicator
	float multiPosY = (centerY * 0.5f) * scaleY;
	float multiHeight = (centerY * 0.65f) * scaleY;

	glBegin(GL_QUADS);
	glTexCoord2f(0.0f, 0.0f); glVertex2f(fPosX, multiPosY);
	glTexCoord2f(1.0f, 0.0f); glVertex2f(fPosXWidth, multiPosY); 
	glTexCoord2f(1.0f, 1.0f); glVertex2f(fPosXWidth, multiHeight);
	glTexCoord2f(0.0f, 1.0f); glVertex2f(fPosX, multiHeight); 
	glEnd();

	// TODO: Add SOLO / MULTIPLAYER text with font
	glColor4f(1.0f, 1.0f, 1.0f, 1.0f);

	glEnable(GL_STENCIL_TEST);
	glEnable(GL_DEPTH_TEST);

	glMatrixMode(GL_PROJECTION);
	glPopMatrix();

	glMatrixMode(GL_MODELVIEW);
	glPopMatrix();
}

void Engine::DrawHud(float elapsedTime, BlockType bloc) {
	// Setter le blend function, tout ce qui sera noir sera transparent
	glDisable(GL_STENCIL_TEST);
	glDisable(GL_DEPTH_TEST);

	glBlendFunc(GL_SRC_ALPHA, GL_ONE);
	glBlendEquation(GL_FUNC_ADD);
	glEnable(GL_BLEND);

	glMatrixMode(GL_PROJECTION);
	glPushMatrix();

	glLoadIdentity();
	glOrtho(0, Width(), 0, Height(), -1, 1);

	glMatrixMode(GL_MODELVIEW);
	glPushMatrix();

	int timer = GetCountdown(elapsedTime);

	if (m_keyK) {
		SystemNotification(m_messageNotification);
		m_keyK = false;
	}
	if (m_keyL) {

		KillNotification(m_player, m_player);
		m_keyL = false;
	}

	if (m_displayInfo) {
		DisplayInfo(elapsedTime, bloc);
	}

	if (m_displayHud) {
		DisplayHud(timer);
	}

	if (m_displayCrosshair) {
		DisplayCrosshair();
	}

	glBlendFunc(GL_CONSTANT_COLOR, GL_ONE_MINUS_CONSTANT_COLOR);
	glBlendEquation(GL_FUNC_SUBTRACT);

	glEnable(GL_STENCIL_TEST);
	glEnable(GL_DEPTH_TEST);

	glMatrixMode(GL_PROJECTION);
	glPopMatrix();

	glMatrixMode(GL_MODELVIEW);
	glPopMatrix();
}

void Engine::PrintText(float x, float y, const std::string& t, float charSizeMultiplier) {
	auto [scaleX, scaleY] = GetScale();
	float scale = std::min(scaleX, scaleY);

	float baseCharSize = 20 + (24 - 20) * (Width() - 1600) / (1920 - 1600);
	float charSize = baseCharSize * charSizeMultiplier;

	glLoadIdentity();
	glTranslated(x, y, 0);

	for (unsigned int i = 0; i < t.length(); ++i) {
		float left = (float)((t[i] - 32) % 16) / 16.f;
		float top = (float)((t[i] - 32) / 16) / 16.f;
		top += 0.5f;

		glBegin(GL_QUADS);
		glTexCoord2f(left, 1.f - top - .0625f);          glVertex2f(0, 0);
		glTexCoord2f(left + .0625f, 1.f - top - .0625f); glVertex2f(charSize * scale, 0);
		glTexCoord2f(left + .0625f, 1.f - top);          glVertex2f(charSize * scale, charSize * scale);
		glTexCoord2f(left, 1.f - top);                   glVertex2f(0, charSize * scale);
		glEnd();

		glTranslated(0.5555f * charSize * scale, 0, 0);
	}
}

std::pair<float, float> Engine::GetScale() const {
	float widthRatio = static_cast<float>(Width()) / BASE_WIDTH;
	float heightRatio = static_cast<float>(Height()) / BASE_HEIGHT;
	return { widthRatio, heightRatio };
}

int Engine::GetFps(float elapsedTime) const { return 1 / elapsedTime; }

int Engine::GetCountdown(float elapsedTime) {
	if (m_resetcountdown)
	{
		m_countdown = m_time + COUNTDOWN;
		m_resetcountdown = false;
	}
	if (m_countdown < m_time)
		Stop();
	if (!m_stopcountdown)
		m_time += elapsedTime;
	return m_countdown - (int)m_time;
}

void Engine::Render(float elapsedTime) {
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);

	m_time_SplashScreen += elapsedTime;
	if(m_time_SplashScreen < 2)
	DrawSplachScreen();
	else if (m_gamestate == GameState::PLAY)
	{
		HideCursor();
		CenterMouse(); //D�placement de centermouse dans l'action de jouer

		//static float gameTime = elapsedTime;
		static irrklang::ISound* step; // Pour les sons de pas.
		static float pollTime = 0;
		static float bulletTime = 0;
		static BlockType bloc = 1;

		if (elapsedTime > 0.1f) return;

		//gameTime += elapsedTime;
		pollTime += elapsedTime;

		Transformation all;
		Transformation skybox;
		Vector3f vstep;

		// Transformations initiales
		glMatrixMode(GL_MODELVIEW);
		glLoadIdentity();

		if (bulletTime > 0.f) bulletTime -= elapsedTime;
		if (bulletTime < 0.f) bulletTime = 0.f;

		static bool leftright = false;
		if (pollTime >= .005f) {
			Player::Sound snd = m_player.ApplyPhysics(m_player.GetInput(m_keyW, m_keyS, m_keyA, m_keyD, m_keySpace, (bloc == BTYPE_LAST && bulletTime <= 0.f && m_mouseL), elapsedTime), &m_world, elapsedTime);
			switch (snd) {
			case Player::Sound::STEP:
				if (leftright)
					vstep = Vector3f(m_player.GetPosition().x + m_player.GetDirection().z, m_player.GetPosition().y - 1.7f, m_player.GetPosition().z + m_player.GetDirection().x);
				else vstep = Vector3f(m_player.GetPosition().x - m_player.GetDirection().z, m_player.GetPosition().y - 1.7f, m_player.GetPosition().z - m_player.GetDirection().x);
				m_audio.Create3DAudioObj(step, AUDIO_PATH "step.wav", vstep, m_player.GetVelocity(), false,.8f);
				leftright = !leftright;
				break;
			case Player::Sound::FALL:
				m_audio.Create3DAudioObj(step, AUDIO_PATH "hit.wav", m_player.GetPosition(), m_player.GetVelocity(), false,1.f);
				break;
			default: break;
			}
			m_audio.Update3DAudio(m_player.GetPOV(), m_player.GetDirection(), m_player.GetVelocity()); // Ajustement du positionnement 3D avec les coordonnees du joueur et
			// son vecteur de velocite (pour l'effet Doppler)
			pollTime = 0;
		}

		m_player.ApplyTransformation(all);

		m_player.ApplyTransformation(skybox, false); // Version d'ApplyTransformation qui ne tient compte que de la rotation 
		// (donc l'objet ne bouge pas relativement au joueur, ce qui est pratique pour une skybox!).

		if (m_mouseWU) bloc++;
		else if (m_mouseWD) bloc--;
		if (bloc == BTYPE_LAST + 1) bloc = BTYPE_AIR + 1;
		else if (bloc == BTYPE_AIR) bloc = BTYPE_LAST; // La selection de BTYPE_LAST �quipe l'arme.
		m_mouseWU = m_mouseWD = false;

		if (m_mouseL) {
			if (bloc != BTYPE_LAST)
				m_world.ChangeBlockAtCursor(bloc, m_player.GetPosition(), m_player.GetDirection(), m_block);
			else if (bulletTime <= 0.f) {
				for (int x = 0; x < MAX_BULLETS; ++x)  // Ajouter une balle dans l'array (aussi connu sous le nom de "faire pow pow").
					if (!m_bullets[x]) {
						m_bullets[x] = new Bullet(m_player.GetPOV() + m_player.GetDirection(), m_player.GetDirection());
						break;
					}
					else if (x == MAX_BULLETS - 1) { // S'il y a pas d'espace dans l'array, prendre la place de la première balle de l'array.
						m_bullets[0]->~Bullet();
						m_bullets[0] = new Bullet(m_player.GetPOV() + m_player.GetDirection(), m_player.GetDirection());
					}
				bulletTime = BULLET_TIME;
				m_audio.Create3DAudioObj(m_powpow, AUDIO_PATH "pow.wav", m_player.GetPOV(), m_player.GetDirection() * 10, false, .5f);
				if (m_flash) { // Coupe le rendering et affiche un frame blanc, pour simuler un flash.
					glClearColor(.8f, .8f, .8f, 1.f);
					glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
					glClearColor(0.f, 0.f, 0.f, 1.f);
					return;
				}
		}
	}
	else if (m_mouseR)
		m_world.ChangeBlockAtCursor(BTYPE_AIR, m_player.GetPosition(), m_player.GetDirection(), m_block);
	
	for (int x = 0; x < MAX_BULLETS; ++x) { // Array de bullets en jeu.
		if (m_bullets[x]) {
			for (int b = 0; b < BULLET_UPDATES_PER_FRAME; ++b) {
				if (m_bullets[x]->Update(&m_world, elapsedTime, BULLET_UPDATES_PER_FRAME, m_players)) {
					m_bullets[x]->~Bullet();
					if (m_whoosh[x])
						m_whoosh[x]->drop();
					m_bullets[x] = nullptr;
					m_whoosh[x] = nullptr;
					break;
				}
				else if (!m_whoosh[x]) {
					m_whoosh[x] = m_audio.Create3DAudioObj(m_whoosh[x], AUDIO_PATH "noise.wav", m_bullets[x]->getPos(), m_bullets[x]->getVel(), true, (m_bullets[x]->getPos() - m_player.GetPosition()).Length());
				}
				else {
					Vector3f pos = m_bullets[x]->getPos(), vel = m_bullets[x]->getVel();
					m_audio.Render3DAudioObj(m_whoosh[x], pos, vel, 5 - (m_bullets[x]->getPos() - m_player.GetPosition()).Length());
				}
			}
		}
	}

		m_renderer.RenderWorld(&m_world, m_renderCount, m_player.GetPosition(), m_player.GetDirection(), all, m_shader01, m_textureAtlas);
		m_world.Update(m_bullets, m_player.GetPosition(), m_blockinfo);
		m_renderer.UpdateMesh(&m_world, m_player.GetPosition(), m_blockinfo);

		if (m_isSkybox) m_skybox.Render(skybox);

		DrawHud(elapsedTime, bloc);
		DisplayPovGun();
		ProcessNotificationQueue();
		if (m_damage)
		{
			InstantDamage();
		}
		static bool fell = false;
		if (m_player.GetPosition().y < 1.7f && !fell) {
			m_audio.Create3DAudioObj(m_scream, AUDIO_PATH "scream.wav", m_player.GetPOV(), m_player.GetVelocity(), false,1.f);
			fell = true;
		}
		else if (m_player.GetPosition().y < -20.f) {
			m_player = Player(Vector3f(.5f, CHUNK_SIZE_Y + 1.8f, .5f)); // Respawn si le bonho- joueur tombe en bas du monde.
			fell = false;
		}

		if (m_networkgame) {
			static char* buf = new char[BUFFER_LENGTH];
			uint32_t buflen = BUFFER_LENGTH;
			netprot::Input input;
			//sockaddr_in addr = m_conn.m_srvsockaddr;

			input.direction = m_player.GetDirection();
			input.sid = m_conn.getId();
			input.timestamp = 12345;
			input.keys.forward = m_keyW;
			input.keys.backward = m_keyS;
			input.keys.left = m_keyA;
			input.keys.right = m_keyD;
			input.keys.jump = m_keySpace;
			input.keys.block = m_mouseR;
			input.keys.shoot = m_mouseL;

			//netprot::Serialize(&input, &buf, &buflen);
			//sendto(m_conn.m_sock_udp, buf, buflen, 0, (sockaddr*)&addr, sizeof(addr));

			netprot::sendPackTo<netprot::Input>(m_conn.m_sock_udp, &input, &buf, &buflen, &m_conn.m_srvsockaddr);
		}
	}
	else if (m_gamestate == GameState::MAIN_MENU || m_gamestate == GameState::OPTIONS)
	{
		DrawMenu();
	}
	else if (m_gamestate == GameState::QUIT)
		Stop();
}

void Engine::KeyPressEvent(unsigned char key) {
	switch (key) {
	case 0: // A - Gauche
		if (!m_keyA) {
			m_keyA = true;
		}
		break;
	case 3: // D - Droite
		if (!m_keyD) {
			m_keyD = true;
		}
		break;
	case 18: // S - Reculer
		if (!m_keyS) {
			m_keyS = true;
		}
		break;
	case 22: // W - Avancer
		if (!m_keyW) {
			m_keyW = true;
		}
		break;
	case 36: // ESC - Quitter
		m_gamestate = GameState::MAIN_MENU;
		//Stop();
		break;
	case 57: // Space - Sauter
		if (!m_keySpace) {
			m_keySpace = true;
		}
		break;
	case 94: // F10 - Plein �cran
		IsFullscreen() ? SetFullscreen(false) : SetFullscreen(true);
		//SetFullscreen(!IsFullscreen());
		break;
	case 2: // C - Ignorer
		break;
	case 5: // F - Ignorer
		break;
	case 10: // K - Debugging DisplayNotification()
		m_keyK = true;
		m_messageNotification = "notifications systeme peuvent etre affichees";
		break;
	case 11: // L - Debugging DisplayNotification()
		m_keyL = true;
		break;
	case 6: // G - Ignorer
		break;
	case 12: // M - Ignorer
		break;
	case 7: // H - Ignorer
		break;
	case 8: // I - Ignorer
		break;
	case 9: // J - InstantDamage
		m_damage = true;
	case 15: // P - Ignorer
		break;
	case 17: // R - Ignorer
		break;
	case 19: // T - Ignorer
		break;
	case 24: // Y - Ignorer
		break;
	case 255: // Fn - Ignorer
		break;
	default:
		std::cout << "Unhandled key: " << (int)key << std::endl;
	}
}

void Engine::KeyReleaseEvent(unsigned char key) {
	switch (key) {
	case 0: // A - Stop gauche
		m_keyA = false;
		break;
	case 2: // C - Toggle crosshair
		m_displayCrosshair = !m_displayCrosshair;
		std::cout << "DISPLAY CROSSHAIR " << (m_displayCrosshair ? "enabled" : "disabled") << std::endl;
		break;
	case 3: // D - Stop droite
		m_keyD = false;
		break;
	case 5: // F - Toggle flash
		m_flash = !m_flash;
		break;
	case 6: // G - Toggle Stop Countdown
		m_stopcountdown = !m_stopcountdown;
		std::cout << "STOP COUNTDOWN " << (m_stopcountdown ? "enabled" : "disabled") << std::endl;
		break;
	case 7: // H - Toggle HUD
		m_displayHud = !m_displayHud;
		std::cout << "DISPLAY HUD " << (m_displayHud ? "enabled" : "disabled") << std::endl;
		break;
	case 8: // I - Toggle render data
		m_displayInfo = !m_displayInfo;
		std::cout << "DISPLAY INFO " << (m_displayInfo ? "enabled" : "disabled") << std::endl;
		break;
	case 10: // K
		m_keyK = false;
		break;
	case 11: // L - Debugging DisplayNotification()
		m_keyL = false;
		break;
	case 12: // M - Toggle music
		m_audio.ToggleMusicState();
		break;
	case 15:
		for (int x = 0; x < MAX_BULLETS; ++x)  // Ajouter une balle dans l'array (aussi connu sous le nom de "faire pow pow").
			if (!m_bullets[x]) {
				m_bullets[x] = new Bullet(m_player.GetPOV() - Vector3f(1.f, 0.f, 1.f), Vector3f(1.f,0.f,1.f));
				break;
			}
			else if (x == MAX_BULLETS - 1) { // S'il y a pas d'espace dans l'array, prendre la place de la premi�re balle de l'array.
				m_bullets[0]->~Bullet();
				m_bullets[0] = new Bullet(m_player.GetPOV() - Vector3f(1.f, 0.f, 1.f), Vector3f(1.f, 0.f, 1.f));
			}
		break;
	case 17: // R - Toggle skybox
		m_isSkybox = !m_isSkybox;
		break;
	case 18: // S - Stop reculer
		m_keyS = false;
		break;
	case 19: // T -Reset countdown
		m_resetcountdown = true;
		std::cout << "RESET COUNTDOWN" << std::endl;
		break;
	case 22: // W - Stop avancer
		m_keyW = false;
		break;
	case 24: // Y - Wireframe
		m_wireframe = !m_wireframe;
		if (m_wireframe)
			glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
		else
			glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
		break;
	case 57: // Espace - Stop sauter
		m_keySpace = false;
		break;
	}
}

void Engine::MouseMoveEvent(int x, int y) {
	m_player.TurnLeftRight(x - (Width() / 2));
	m_player.TurnTopBottom(y - (Height() / 2));

	// Centrer la souris seulement si elle n'est pas d�j� centr�e
	// Il est n�cessaire de faire la v�rification pour �viter de tomber
	// dans une boucle infinie o� l'appel � CenterMouse g�n�re un
	// MouseMoveEvent, qui rapelle CenterMouse qui rapelle un autre
	// MouseMoveEvent, etc
	if (x == (Width() / 2) && y == (Height() / 2))
		return;

}

void Engine::MousePressEvent(const MOUSE_BUTTON& button, int x, int y) {
	m_mousemx = x;
	m_mousemy = y;

	if (m_gamestate == GameState::PLAY)
	{
		switch (button) {
		case MOUSE_BUTTON_LEFT:
			m_mouseL = true;
			break;
		case MOUSE_BUTTON_RIGHT:
			m_mouseR = true;
			break;
		case MOUSE_BUTTON_MIDDLE:
			m_mouseC = true;
			break;
		case MOUSE_BUTTON_WHEEL_UP:
			m_mouseWU = true;
			break;
		case MOUSE_BUTTON_WHEEL_DOWN:
			m_mouseWD = true;
			break;
		case MOUSE_BUTTON_NONE: break;
		}
	}
	else if (m_gamestate == GameState::MAIN_MENU)
	{
		if ((m_mousemx >= 285 && m_mousemx <= 490) && (m_mousemy >= 150 && m_mousemy <= 250))
			m_gamestate = GameState::PLAY;
		if ((m_mousemx >= 305 && m_mousemx <= 450) && (m_mousemy >= 300 && m_mousemy <= 400))
			m_gamestate = GameState::QUIT;
	}
}

void Engine::MouseReleaseEvent(const MOUSE_BUTTON& button, int x, int y) {
	switch (button) {
	case MOUSE_BUTTON_LEFT:
		m_mouseL = false;
		m_block = false;
		break;
	case MOUSE_BUTTON_RIGHT:
		m_mouseR = false;
		m_block = false;
		break;
	case MOUSE_BUTTON_MIDDLE:
		m_mouseC = false;
		break;
	case MOUSE_BUTTON_WHEEL_UP:
		m_mouseWU = false;
		break;
	case MOUSE_BUTTON_WHEEL_DOWN:
		m_mouseWD = false;
		break;
	case MOUSE_BUTTON_NONE: break;
	}
}

bool Engine::LoadTexture(Texture& texture, const std::string& filename, bool useMipmaps, bool stopOnError) {
	texture.Load(filename, useMipmaps);
	if (!texture.IsValid()) {
		std::cerr << "Unable to load texture (" << filename << ")" << std::endl;
		if (stopOnError)
			Stop();

		return false;
	}

	return true;
}