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src/client/states/ConnectingState.cpp

@@ -0,0 +1,189 @@
+#include "client/states/GameState.h"
+#include <client/states/ConnectingState.h>
+
+#include <Nazara/Core/ApplicationBase.hpp>
+#include <Nazara/Core/Clock.hpp>
+#include <Nazara/Core/EntitySystemAppComponent.hpp>
+#include <Nazara/Core/EnttWorld.hpp>
+#include <Nazara/Core/StateMachine.hpp>
+#include <Nazara/Core/Time.hpp>
+#include <Nazara/Network/Algorithm.hpp>
+#include <Nazara/Network/IpAddress.hpp>
+#include <Nazara/TextRenderer.hpp>
+#include <Nazara/TextRenderer/SimpleTextDrawer.hpp>
+#include <blitz/common/Format.h>
+#include <blitz/common/Log.h>
+#include <client/Client.h>
+#include <memory>
+#include <server/Server.h>
+
+namespace blitz {
+namespace client {
+
+static const int ConnectTimeout = 5;
+
+ConnectingState::ConnectingState(std::shared_ptr<StateData> a_StateData, std::shared_ptr<AbstractState> a_PreviousState,
+	const std::string& a_Address, std::uint16_t a_Port, bool a_Server) :
+	AbstractState(std::move(a_StateData)),
+	m_PreviousState(std::move(a_PreviousState)),
+	m_Client(std::make_unique<Client>(*GetStateData().m_World)) {
+	m_ResolvingData.m_Port = a_Port;
+	m_ResolvingData.m_ServerName = a_Address;
+
+	Nz::SimpleTextDrawer textDrawer;
+	textDrawer.SetTextColor({0.0, 0.0, 0.0, 1.0});
+	textDrawer.SetCharacterSize(75);
+	m_BackButton = CreateWidget<Nz::ButtonWidget>();
+	textDrawer.SetText("Back");
+	m_BackButton->UpdateText(textDrawer);
+	m_BackButton->Resize(m_BackButton->GetPreferredSize());
+	m_BackButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnBackPressed(); });
+
+	m_StatusText = CreateWidget<Nz::LabelWidget>();
+	m_StatusText->UpdateText(Nz::SimpleTextDrawer::Draw("Connecting ...", 80));
+
+	if (a_Server) {
+		auto& app = GetStateData().m_App;
+		auto& ecs = app->GetComponent<Nz::EntitySystemAppComponent>();
+
+		// create server
+		Nz::EnttWorld& world = ecs.AddWorld<Nz::EnttWorld>();
+		m_Server = std::make_unique<server::Server>(a_Port, world);
+	}
+
+	m_ClientReady.Connect(m_Client->OnClientReady, [this]() { OnConnect(); });
+	m_ClientDisconnect.Connect(m_Client->OnClientDisconnect, [this]() { TryNextAddress(); });
+
+	TryResolve();
+}
+
+ConnectingState::~ConnectingState() {}
+
+bool ConnectingState::Update(Nz::StateMachine& fsm, Nz::Time elapsedTime) {
+	if (m_NextState)
+		fsm.ChangeState(std::move(m_NextState));
+
+	if (m_Server && m_Server->IsClosed())
+		OnConnectFailed();
+
+	if (m_ResolvingData.m_HasResult) {
+		if (m_ResolvingData.m_Result) {
+			// Register resolved addresses as next addresses
+			const auto& addresses = m_ResolvingData.m_Result.GetValue();
+			for (auto resultIt = addresses.rbegin(); resultIt != addresses.rend(); ++resultIt)
+				m_Addresses.emplace(*resultIt);
+			TryConnect(m_Addresses.front());
+		} else {
+			OnConnectFailed();
+		}
+		m_ResolvingData.m_HasResult = false;
+	}
+
+	static Nz::MillisecondClock clock;
+	static int progress = -1;
+
+	if (m_Client && clock.RestartIfOver(Nz::Time::Milliseconds(500))) {
+		progress++;
+		progress %= 4;
+		std::string textStr = "Connecting ";
+		for (int i = 0; i < progress; i++) {
+			textStr += ".";
+		}
+		m_StatusText->UpdateText(Nz::SimpleTextDrawer::Draw(textStr, 80));
+		return true;
+	}
+
+	if (!m_Addresses.empty() && m_TimeoutClock.RestartIfOver(Nz::Time::Seconds(ConnectTimeout))) {
+		TryNextAddress();
+	}
+
+	if (m_IsConnected) {
+		fsm.ResetState(std::make_shared<GameState>(GetStateDataPtr(), std::move(m_Client), std::move(m_Server)));
+	}
+
+	return true;
+}
+
+void ConnectingState::TryConnect(const Nz::IpAddress& a_ServerAddress) {
+	if (!m_Client)
+		return;
+	LogD("Trying to connect to " + a_ServerAddress.ToString() + " ...");
+	m_TimeoutClock.Restart();
+	m_Client->Connect(a_ServerAddress);
+}
+
+void ConnectingState::TryNextAddress() {
+	m_Client->Disconnect();
+	m_Addresses.pop();
+	if (m_Addresses.empty())
+		OnConnectFailed();
+	else
+		TryConnect(m_Addresses.front());
+}
+
+void ConnectingState::TryResolve() {
+	Nz::ResolveError resolveError;
+	auto serverAddresses = Nz::IpAddress::ResolveHostname(
+		Nz::NetProtocol::Any, m_ResolvingData.m_ServerName, std::to_string(m_ResolvingData.m_Port), &resolveError);
+	if (serverAddresses.empty()) {
+		m_ResolvingData.m_Result = Nz::Err(Nz::ErrorToString(resolveError));
+		LogD("Failed to resolve " + m_ResolvingData.m_ServerName + " !");
+	} else {
+		std::vector<Nz::IpAddress> addresses;
+		addresses.reserve(serverAddresses.size());
+		for (auto hostnameInfo : serverAddresses) {
+			hostnameInfo.address.SetPort(m_ResolvingData.m_Port);
+			addresses.push_back(hostnameInfo.address);
+		}
+
+		m_ResolvingData.m_Result = std::move(addresses);
+	}
+
+	m_ResolvingData.m_HasResult = true;
+}
+
+void ConnectingState::LayoutWidgets() {
+	Nz::Vector2f canvasSize = GetStateData().m_Canvas->GetSize();
+	Nz::Vector2f center = canvasSize / 2.f;
+
+	constexpr float padding = 10.f;
+
+	std::array<Nz::BaseWidget*, 2> widgets = {m_StatusText, m_BackButton};
+
+	float maxWidth = 0.f;
+	float totalSize = padding * (widgets.size() - 1);
+	for (Nz::BaseWidget* widget : widgets) {
+		Nz::Vector2f size = widget->GetSize();
+
+		maxWidth = std::max(maxWidth, size.x);
+		totalSize += size.y;
+	}
+
+	Nz::Vector2f cursor = center;
+	cursor.y += totalSize / 2.f;
+
+	for (Nz::BaseWidget* widget : widgets) {
+		widget->Resize({maxWidth, widget->GetHeight()});
+		widget->SetPosition({0.f, cursor.y - widget->GetSize().y, 0.f});
+		widget->CenterHorizontal();
+		cursor.y -= widget->GetSize().y + padding;
+	}
+}
+
+void ConnectingState::OnBackPressed() {
+	m_NextState = std::move(m_PreviousState);
+}
+
+void ConnectingState::OnConnect() {
+	m_IsConnected = true;
+}
+
+void ConnectingState::OnConnectFailed() {
+	m_StatusText->UpdateText(Nz::SimpleTextDrawer::Draw("Connection failed !", 80));
+	m_StatusText->CenterHorizontal();
+	m_Server.reset(nullptr);
+	m_Client.reset(nullptr);
+}
+
+}  // namespace client
+}  // namespace blitz

src/client/states/CreateServerState.cpp

@@ -1,7 +1,13 @@
+#include <Nazara/Core/Color.hpp>
+#include <Nazara/Network/IpAddress.hpp>
+#include <Nazara/Widgets/TextAreaWidget.hpp>
 #include <client/states/CreateServerState.h>
 
 #include <Nazara/Core/StateMachine.hpp>
 #include <Nazara/TextRenderer.hpp>
+#include <client/Client.h>
+#include <client/states/ConnectingState.h>
+#include <server/Server.h>
 
 namespace blitz {
 namespace client {
@@ -18,6 +24,18 @@ CreateServerState::CreateServerState(std::shared_ptr<StateData> a_StateData, std
 	m_CreateServerButton->Resize(m_CreateServerButton->GetPreferredSize());
 	m_CreateServerButton->OnButtonTrigger.Connect([this](const Nz::ButtonWidget*) { OnCreateServerPressed(); });
 
+	m_InputPort = CreateWidget<Nz::TextAreaWidget>();
+	m_InputPort->SetBackgroundColor(Nz::Color::White());
+	m_InputPort->EnableBackground(true);
+	m_InputPort->EnableMultiline(false);
+	m_InputPort->SetTextColor(Nz::Color::Black());
+	m_InputPort->SetCharacterFilter([](Nz::UInt32 character) {
+		if (character < U'0' || character > U'9')
+			return false;
+
+		return true;
+	});
+
 	m_BackButton = CreateWidget<Nz::ButtonWidget>();
 	textDrawer.SetText("Back");
 	m_BackButton->UpdateText(textDrawer);
@@ -40,7 +58,7 @@ void CreateServerState::LayoutWidgets() {
 
 	constexpr float padding = 10.f;
 
-	std::array<Nz::BaseWidget*, 2> widgets = {m_CreateServerButton, m_BackButton};
+	std::array<Nz::BaseWidget*, 3> widgets = {m_InputPort, m_CreateServerButton, m_BackButton};
 
 	float maxWidth = 0.f;
 	float totalSize = padding * (widgets.size() - 1);
@@ -62,7 +80,24 @@ void CreateServerState::LayoutWidgets() {
 	}
 }
 
-void CreateServerState::OnCreateServerPressed() {}
+void CreateServerState::OnCreateServerPressed() {
+	std::string serverPort = m_InputPort->GetText();
+	if (serverPort.empty()) {
+		// UpdateStatus("Error: blank server port", Nz::Color::Red());
+		return;
+	}
+
+	long long rawPort = std::stoi(serverPort);
+	if (rawPort <= 0 || rawPort > 0xFFFF) {
+		// UpdateStatus("Error: " + serverPort + " is not a valid port", Nz::Color::Red());
+		return;
+	}
+
+	Nz::IpAddress address = Nz::IpAddress::LoopbackIpV4;
+	address.SetPort(rawPort);
+
+	m_NextState = std::make_shared<ConnectingState>(GetStateDataPtr(), shared_from_this(), "localhost", rawPort, true);
+}
 
 void CreateServerState::OnBackPressed() {
 	m_NextState = std::move(m_PreviousState);

src/client/states/GameState.cpp

@@ -0,0 +1,16 @@
+#include <client/states/GameState.h>
+
+#include <client/Client.h>
+#include <server/Server.h>
+
+namespace blitz {
+namespace client {
+
+GameState::GameState(
+	std::shared_ptr<StateData> a_StateData, std::unique_ptr<Client>&& a_Client, std::unique_ptr<server::Server>&& a_Server) :
+	AbstractState(a_StateData), m_Client(std::move(a_Client)), m_Server(std::move(a_Server)) {}
+
+GameState::~GameState() {}
+
+}  // namespace client
+}  // namespace blitz

src/client/states/JoinServerState.cpp

@@ -1,3 +1,6 @@
+#include <Nazara/Network/Enums.hpp>
+#include <Nazara/Network/IpAddress.hpp>
+#include <client/states/ConnectingState.h>
 #include <client/states/JoinServerState.h>
 
 #include <Nazara/Core/StateMachine.hpp>
@@ -12,6 +15,13 @@ JoinServerState::JoinServerState(std::shared_ptr<StateData> a_StateData, std::sh
 	textDrawer.SetTextColor({0.0, 0.0, 0.0, 1.0});
 	textDrawer.SetCharacterSize(75);
 
+	m_InputAddress = CreateWidget<Nz::TextAreaWidget>();
+	m_InputAddress->SetBackgroundColor(Nz::Color::White());
+	m_InputAddress->EnableBackground(true);
+	m_InputAddress->EnableMultiline(false);
+	m_InputAddress->SetTextColor(Nz::Color::Black());
+	m_InputAddress->SetText("localhost");
+
 	m_JoinServerButton = CreateWidget<Nz::ButtonWidget>();
 	textDrawer.SetText("Join Server");
 	m_JoinServerButton->UpdateText(textDrawer);
@@ -40,7 +50,7 @@ void JoinServerState::LayoutWidgets() {
 
 	constexpr float padding = 10.f;
 
-	std::array<Nz::BaseWidget*, 2> widgets = {m_JoinServerButton, m_BackButton};
+	std::array<Nz::BaseWidget*, 3> widgets = {m_InputAddress, m_JoinServerButton, m_BackButton};
 
 	float maxWidth = 0.f;
 	float totalSize = padding * (widgets.size() - 1);
@@ -62,7 +72,21 @@ void JoinServerState::LayoutWidgets() {
 	}
 }
 
-void JoinServerState::OnJoinServerPressed() {}
+void JoinServerState::OnJoinServerPressed() {
+	std::string address = m_InputAddress->GetText();
+	auto separator = address.find(':');
+	std::string name = address.substr(0, separator);
+	std::uint16_t port = 25565;
+	if (separator != std::string::npos) {
+		try {
+			std::string rawPort = address.substr(separator + 1, std::string::npos);
+			port = std::stoi(rawPort);
+		} catch (std::exception& e) {
+			return;
+		}
+	}
+	m_NextState = std::make_shared<ConnectingState>(GetStateDataPtr(), shared_from_this(), name, port, false);
+}
 
 void JoinServerState::OnBackPressed() {
 	m_NextState = std::move(m_PreviousState);